Revision: linuxbios@linuxbios.org--devel/freebios--devel--2.0--patch-51

Creator: Yinghai Lu <yhlu@tyan.com> cache_as_ram for AMD and some intel git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1967 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
author: arch import user (historical) <svn@openbios.org> 2005-07-06 17:17:25 +0000
committer: arch import user (historical) <svn@openbios.org> 2005-07-06 17:17:25 +0000
commit: 6ca7636c8f52560e732cdd5b1c7829cda5aa2bde (patch)
tree: cc45ae7c4dea6e2c5338f52b4314106bf07023be /src/mainboard
parent: b2ed53dd5669c2c3839633bd2b3b4af709a5b149 (diff)
download: coreboot-6ca7636c8f52560e732cdd5b1c7829cda5aa2bde.tar.xz
38 files changed, 4274 insertions, 243 deletions
diff --git a/src/mainboard/Iwill/DK8S2/Options.lb b/src/mainboard/Iwill/DK8S2/Options.lb
index 373d1a98a9..d7b694d1f8 100644
--- a/src/mainboard/Iwill/DK8S2/Options.lb
+++ b/src/mainboard/Iwill/DK8S2/Options.lb
@@ -51,6 +51,8 @@ uses CC
 uses HOSTCC
 uses OBJCOPY
 
+uses CONFIG_USE_INIT
+
 ## ROM_SIZE is the size of boot ROM that this board will use.
 default ROM_SIZE=524288
 
diff --git a/src/mainboard/Iwill/DK8X/Options.lb b/src/mainboard/Iwill/DK8X/Options.lb
index f9987d4392..0f413f0499 100644
--- a/src/mainboard/Iwill/DK8X/Options.lb
+++ b/src/mainboard/Iwill/DK8X/Options.lb
@@ -51,6 +51,8 @@ uses CC
 uses HOSTCC
 uses OBJCOPY
 
+uses CONFIG_USE_INIT
+
 ## ROM_SIZE is the size of boot ROM that this board will use.
 default ROM_SIZE=524288
 
diff --git a/src/mainboard/amd/quartet/Options.lb b/src/mainboard/amd/quartet/Options.lb
index 052306ae05..7e2dc489ae 100644
--- a/src/mainboard/amd/quartet/Options.lb
+++ b/src/mainboard/amd/quartet/Options.lb
@@ -47,6 +47,8 @@ uses CC
 uses HOSTCC
 uses OBJCOPY
 
+uses CONFIG_USE_INIT
+
 
 ###
 ### Build options
diff --git a/src/mainboard/amd/serenade/Options.lb b/src/mainboard/amd/serenade/Options.lb
index 11bc28b232..fedc518d8a 100644
--- a/src/mainboard/amd/serenade/Options.lb
+++ b/src/mainboard/amd/serenade/Options.lb
@@ -47,6 +47,8 @@ uses CC
 uses HOSTCC
 uses OBJCOPY
 
+uses CONFIG_USE_INIT
+
 ###
 ### Build options
 ###
diff --git a/src/mainboard/amd/solo/Options.lb b/src/mainboard/amd/solo/Options.lb
index eec85778df..42611440f6 100644
--- a/src/mainboard/amd/solo/Options.lb
+++ b/src/mainboard/amd/solo/Options.lb
@@ -48,6 +48,8 @@ uses CC
 uses HOSTCC
 uses OBJCOPY
 
+uses CONFIG_USE_INIT
+
 
 ###
 ### Build options
diff --git a/src/mainboard/arima/hdama/Options.lb b/src/mainboard/arima/hdama/Options.lb
index 1972c39fe4..773d698ad2 100644
--- a/src/mainboard/arima/hdama/Options.lb
+++ b/src/mainboard/arima/hdama/Options.lb
@@ -53,6 +53,8 @@ uses OBJCOPY
 uses CONFIG_CONSOLE_VGA
 uses CONFIG_PCI_ROM_RUN
 
+uses CONFIG_USE_INIT
+
 ###
 ### Build options
 ###
diff --git a/src/mainboard/ibm/e325/Options.lb b/src/mainboard/ibm/e325/Options.lb
index 74f74a787e..9bad595658 100644
--- a/src/mainboard/ibm/e325/Options.lb
+++ b/src/mainboard/ibm/e325/Options.lb
@@ -47,6 +47,8 @@ uses CC
 uses HOSTCC
 uses OBJCOPY
 
+uses CONFIG_USE_INIT
+
 
 ###
 ### Build options
diff --git a/src/mainboard/island/aruma/Options.lb b/src/mainboard/island/aruma/Options.lb
index 4e2cef1ff1..fc9489a29d 100644
--- a/src/mainboard/island/aruma/Options.lb
+++ b/src/mainboard/island/aruma/Options.lb
@@ -53,6 +53,8 @@ uses CONFIG_GDB_STUB
 uses CONFIG_CONSOLE_VGA
 uses CONFIG_PCI_ROM_RUN
 
+uses CONFIG_USE_INIT
+
 ###
 ### Build options
 ###
diff --git a/src/mainboard/newisys/khepri/Options.lb b/src/mainboard/newisys/khepri/Options.lb
index c975e08c8f..d80f0c3904 100644
--- a/src/mainboard/newisys/khepri/Options.lb
+++ b/src/mainboard/newisys/khepri/Options.lb
@@ -47,6 +47,8 @@ uses CC
 uses HOSTCC
 uses OBJCOPY
 
+uses CONFIG_USE_INIT
+
 ###
 ### Build options
 ###
diff --git a/src/mainboard/tyan/s2735/Config.lb b/src/mainboard/tyan/s2735/Config.lb
index 6ce12ebfd3..37d6493e74 100644
--- a/src/mainboard/tyan/s2735/Config.lb
+++ b/src/mainboard/tyan/s2735/Config.lb
@@ -16,6 +16,7 @@ end
 ##
 default PAYLOAD_SIZE            = ( ROM_SECTION_SIZE - ROM_IMAGE_SIZE )
 default CONFIG_ROM_STREAM_START = (0xffffffff - ROM_SIZE + ROM_SECTION_OFFSET + 1)
+default CONFIG_ROM_STREAM     = 1
 
 ##
 ## Compute where this copy of linuxBIOS will start in the boot rom
@@ -34,6 +35,7 @@ default XIP_ROM_BASE = ( _ROMBASE + ROM_IMAGE_SIZE - XIP_ROM_SIZE )
 
 arch i386 end 
 
+
 ##
 ## Build the objects we have code for in this directory.
 ##
@@ -42,7 +44,26 @@ driver mainboard.o
 if HAVE_MP_TABLE object mptable.o end
 if HAVE_PIRQ_TABLE object irq_tables.o end
 #object reset.o
+if USE_DCACHE_RAM
+
+if CONFIG_USE_INIT
+
+makerule ./auto.o
+        depends "$(MAINBOARD)/cache_as_ram_auto.c option_table.h"
+        action "$(CC) -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/cache_as_ram_auto.c -Os -nostdinc -nostdlib -fno-builtin -Wall -c -o auto.o"
+end
+
+else
 
+makerule ./auto.inc
+        depends "$(MAINBOARD)/cache_as_ram_auto.c option_table.h"
+        action "$(CC) -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/cache_as_ram_auto.c -Os -nostdinc -nostdlib -fno-builtin -Wall -c -S -o $@"
+        action "perl -e 's/.rodata/.rom.data/g' -pi $@"
+        action "perl -e 's/.text/.section .rom.text/g' -pi $@"
+end
+
+end
+else
 
 ##
 ## Romcc output
@@ -66,13 +87,24 @@ makerule ./auto.inc
         action  "./romcc    -mcpu=k8 -O2 -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@"
 end
 
+end
+
 ##
 ## Build our 16 bit and 32 bit linuxBIOS entry code
 ##
 mainboardinit cpu/x86/16bit/entry16.inc
 mainboardinit cpu/x86/32bit/entry32.inc
 ldscript /cpu/x86/16bit/entry16.lds
-ldscript /cpu/x86/32bit/entry32.lds
+if USE_DCACHE_RAM
+        if CONFIG_USE_INIT
+                ldscript /cpu/x86/32bit/entry32.lds
+        end
+
+        if CONFIG_USE_INIT
+                ldscript      /cpu/intel/car/cache_as_ram.lds
+        end
+end
+
 
 ##
 ## Build our reset vector (This is where linuxBIOS is entered)
@@ -85,8 +117,11 @@ else
 	ldscript /cpu/x86/32bit/reset32.lds 
 end
 
+if USE_DCACHE_RAM
+else
 ### Should this be in the northbridge code?
 mainboardinit arch/i386/lib/cpu_reset.inc
+end
 
 ##
 ## Include an id string (For safe flashing)
@@ -94,23 +129,40 @@ mainboardinit arch/i386/lib/cpu_reset.inc
 mainboardinit arch/i386/lib/id.inc
 ldscript /arch/i386/lib/id.lds
 
+if USE_DCACHE_RAM
+##
+## Setup Cache-As-Ram
+##
+mainboardinit cpu/intel/car/cache_as_ram.inc
+end
+
 ###
 ### This is the early phase of linuxBIOS startup 
 ### Things are delicate and we test to see if we should
 ### failover to another image.
 ###
 if USE_FALLBACK_IMAGE
-	ldscript /arch/i386/lib/failover.lds 
-	mainboardinit ./failover.inc
+if USE_DCACHE_RAM
+       ldscript /arch/i386/lib/failover.lds
+else
+       ldscript /arch/i386/lib/failover.lds
+        mainboardinit ./failover.inc
+end
 end
-
-###
-### O.k. We aren't just an intermediary anymore!
-###
 
 ##
 ## Setup RAM
 ##
+if USE_DCACHE_RAM
+
+if CONFIG_USE_INIT
+initobject auto.o
+else
+mainboardinit ./auto.inc
+end
+
+else
+# ROMCC
 mainboardinit cpu/x86/fpu/enable_fpu.inc
 mainboardinit cpu/x86/mmx/enable_mmx.inc
 mainboardinit cpu/x86/sse/enable_sse.inc
@@ -118,15 +170,16 @@ mainboardinit ./auto.inc
 mainboardinit cpu/x86/sse/disable_sse.inc
 mainboardinit cpu/x86/mmx/disable_mmx.inc
 
+end
+
 ##
 ## Include the secondary Configuration files 
 ##
-dir /pc80
-
 if CONFIG_CHIP_NAME
 	config chip.h
 end
 
+
 # sample config for tyan/s2735
 chip northbridge/intel/e7501
         device pci_domain 0 on
@@ -135,7 +188,12 @@ chip northbridge/intel/e7501
         	device pci 2.0 on
         		chip southbridge/intel/i82870
         	        	device pci 1c.0 on end
-		                device pci 1d.0 on end
+		                device pci 1d.0 on 
+					chip drivers/pci/onboard
+                                        	device pci 1.0 on end # intel lan
+                                                device pci 1.1 on end
+                                        end
+				end
         	                device pci 1e.0 on end
         	                device pci 1f.0 on end
         		end
@@ -147,42 +205,55 @@ chip northbridge/intel/e7501
         	        device pci 1d.2 on end
         	        device pci 1d.3 on end
 		        device pci 1d.7 on end
-		        device pci 1e.0 on end
+		        device pci 1e.0 on 
+                        	chip drivers/pci/onboard
+                                	device pci 1.0 on end # intel lan 10/100
+                                end
+                                chip drivers/pci/onboard
+                                        device pci 2.0 on end # ati 
+                                end
+			end
 		        device pci 1f.0 on
-        	        # device pci 8.0 end
-        	                chip superio/winbond/w83627hf
-        	                        device pnp 2e.0 on     #  Floppy
-        		                         io 0x60 = 0x3f0
-        	        	                irq 0x70 = 6
-        	                	        drq 0x74 = 2
-		                        end
-        	                        device pnp 2e.1 off     #  Parallel Port
-        	                                 io 0x60 = 0x378
-        		                        irq 0x70 = 7
-        	        	        end
-		                        device pnp 2e.2 on      #  Com1
-        	                                 io 0x60 = 0x3f8
-        	                                irq 0x70 = 4
-        		                end
-        	        	        device pnp 2e.3 off     #  Com2
-		                                 io 0x60 = 0x2f8
-        	                                irq 0x70 = 3
-        	                        end
-        		                device pnp 2e.5 on      #  Keyboard
-		                                 io 0x60 = 0x60
-        	                                 io 0x62 = 0x64
-        	                                irq 0x70 = 1
-        		                        irq 0x72 = 12
-        	        	        end
-		                        device pnp 2e.6 off end #  CIR
-        	                        device pnp 2e.7 off end #  GAME_MIDI_GIPO1
-        	                        device pnp 2e.8 off end #  GPIO2
-        		                device pnp 2e.9 off end #  GPIO3
-        	        	        device pnp 2e.a off end #  ACPI
-		                        device pnp 2e.b on      #  HW Monitor
-        	                                 io 0x60 = 0x290
-        	                        end
-        		        end
+				chip superio/winbond/w83627hf
+                                	device pnp 2e.0 on #  Floppy
+                                        	io 0x60 = 0x3f0
+                                                irq 0x70 = 6
+                                                drq 0x74 = 2
+                                        end
+	                                device pnp 2e.1 off #  Parallel Port
+                                                io 0x60 = 0x378
+                                                irq 0x70 = 7
+                                        end
+                                        device pnp 2e.2 on #  Com1
+        	                                io 0x60 = 0x3f8
+                                                irq 0x70 = 4
+                                        end
+                                        device pnp 2e.3 on #  Com2
+                                                io 0x60 = 0x2f8
+                                                irq 0x70 = 3
+                                        end
+                                        device pnp 2e.5 on #  Keyboard
+                                                io 0x60 = 0x60
+                                                io 0x62 = 0x64
+                                                irq 0x70 = 1
+                                                irq 0x72 = 12
+                                        end
+                                        device pnp 2e.6 off #  CIR
+                                                io 0x60 = 0x100
+                                        end
+                                        device pnp 2e.7 off #  GAME_MIDI_GIPO1
+                                                io 0x60 = 0x220
+                                                io 0x62 = 0x300
+                                                irq 0x70 = 9
+                                        end                               
+                                        device pnp 2e.8 off end #  GPIO2
+                                        device pnp 2e.9 off end #  GPIO3
+                                        device pnp 2e.a off end #  ACPI
+                                        device pnp 2e.b on #  HW Monitor
+                                                io 0x60 = 0x290
+                                                irq 0x70 = 5
+                                        end
+				end
 		        end
 		        device pci 1f.1 off end
         	        device pci 1f.2 on end
diff --git a/src/mainboard/tyan/s2735/Options.lb b/src/mainboard/tyan/s2735/Options.lb
index 98c7e50f4f..16b23a66bd 100644
--- a/src/mainboard/tyan/s2735/Options.lb
+++ b/src/mainboard/tyan/s2735/Options.lb
@@ -9,7 +9,9 @@ uses HARD_RESET_FUNCTION
 uses IRQ_SLOT_COUNT
 uses HAVE_OPTION_TABLE
 uses CONFIG_MAX_CPUS
+uses CONFIG_MAX_PHYSICAL_CPUS
 uses CONFIG_LOGICAL_CPUS
+uses SERIAL_CPU_INIT
 uses CONFIG_IOAPIC
 uses CONFIG_SMP
 uses FALLBACK_SIZE
@@ -33,8 +35,15 @@ uses LB_CKS_LOC
 uses MAINBOARD_PART_NUMBER
 uses MAINBOARD_VENDOR
 uses MAINBOARD
+uses MAINBOARD_PCI_SUBSYSTEM_VENDOR_ID
+uses MAINBOARD_PCI_SUBSYSTEM_DEVICE_ID
 uses LINUXBIOS_EXTRA_VERSION
 uses _RAMBASE
+uses CONFIG_GDB_STUB
+uses CROSS_COMPILE
+uses CC
+uses HOSTCC
+uses OBJCOPY
 uses TTYS0_BAUD
 uses TTYS0_BASE
 uses TTYS0_LCS
@@ -44,31 +53,35 @@ uses MAINBOARD_POWER_ON_AFTER_POWER_FAIL
 uses CONFIG_CONSOLE_SERIAL8250
 uses CONFIG_UDELAY_TSC
 uses CONFIG_TSC_X86RDTSC_CALIBRATE_WITH_TIMER2
+uses CONFIG_CONSOLE_BTEXT
 uses HAVE_INIT_TIMER
 uses CONFIG_GDB_STUB
-uses CROSS_COMPILE
-uses CC
-uses HOSTCC
-uses OBJCOPY
 uses CONFIG_CHIP_NAME
+uses CONFIG_CONSOLE_VGA
+uses CONFIG_PCI_ROM_RUN
 
-###
-### Build options
-###
+uses USE_DCACHE_RAM
+uses DCACHE_RAM_BASE
+uses DCACHE_RAM_SIZE
+uses CONFIG_USE_INIT
 
-##
 ## ROM_SIZE is the size of boot ROM that this board will use.
-#512K bytes
-#default ROM_SIZE=524288
+#512K bytes 
+default ROM_SIZE=524288
 
 #1M bytes
-default ROM_SIZE=1048576
+#default ROM_SIZE=1048576
+
 
 ##
 ## FALLBACK_SIZE is the amount of the ROM the complete fallback image will use
 ##
 default FALLBACK_SIZE=131072
 
+###
+### Build options
+###
+
 ##
 ## Build code for the fallback boot
 ##
@@ -79,23 +92,21 @@ default HAVE_FALLBACK_BOOT=1
 ##
 default HAVE_HARD_RESET=1
 
-##
-## Funky hard reset implementation
-## 
-#default HARD_RESET_BUS=3
-#default HARD_RESET_DEVICE=4
-#default HARD_RESET_FUNCTION=0
+default HARD_RESET_BUS=1
+default HARD_RESET_DEVICE=4
+default HARD_RESET_FUNCTION=0
 
 ## Delay timer options
 ##
 default CONFIG_UDELAY_TSC=1
 default CONFIG_TSC_X86RDTSC_CALIBRATE_WITH_TIMER2=1
 
+
 ##
 ## Build code to export a programmable irq routing table
 ##
 default HAVE_PIRQ_TABLE=1
-default IRQ_SLOT_COUNT=15
+default IRQ_SLOT_COUNT=11
 
 ##
 ## Build code to export an x86 MP table
@@ -121,8 +132,28 @@ default LB_CKS_LOC=123
 ##
 default CONFIG_SMP=1
 default CONFIG_MAX_CPUS=4
+default CONFIG_MAX_PHYSICAL_CPUS=2
 default CONFIG_LOGICAL_CPUS=1
 
+default SERIAL_CPU_INIT=0
+
+#BTEXT Console
+#default CONFIG_CONSOLE_BTEXT=1
+
+#VGA Console
+#default CONFIG_CONSOLE_VGA=1
+#default CONFIG_PCI_ROM_RUN=1
+
+##
+## enable CACHE_AS_RAM specifics
+##
+default USE_DCACHE_RAM=1
+default DCACHE_RAM_BASE=0xF2000000
+#default DCACHE_RAM_BASE=0xcf000
+default DCACHE_RAM_SIZE=0x1000
+#default CONFIG_USE_INIT=1
+
+
 ##
 ## Build code to setup a generic IOAPIC
 ##
@@ -131,8 +162,10 @@ default CONFIG_IOAPIC=1
 ##
 ## Clean up the motherboard id strings
 ##
-default MAINBOARD_PART_NUMBER="Tyan"
-default MAINBOARD_VENDOR="s2735"
+default MAINBOARD_PART_NUMBER="s2735"
+default MAINBOARD_VENDOR="Tyan"
+default MAINBOARD_PCI_SUBSYSTEM_VENDOR_ID=0x10f1
+default MAINBOARD_PCI_SUBSYSTEM_DEVICE_ID=0x2735
 
 ###
 ### LinuxBIOS layout values
diff --git a/src/mainboard/tyan/s2735/auto.c b/src/mainboard/tyan/s2735/auto.c
index 5874d5ea35..9cf5e50187 100644
--- a/src/mainboard/tyan/s2735/auto.c
+++ b/src/mainboard/tyan/s2735/auto.c
@@ -10,7 +10,9 @@
 #include "option_table.h"
 #include "pc80/mc146818rtc_early.c"
 #include "pc80/serial.c"
+
 #include "arch/i386/lib/console.c"
+
 #include "ram/ramtest.c"
 #include "southbridge/intel/i82801er/i82801er_early_smbus.c"
 #include "northbridge/intel/e7501/raminit.h"
@@ -51,6 +53,7 @@ static inline int spd_read_byte(unsigned device, unsigned address)
 	return smbus_read_byte(device, address);
 }
 
+
 #include "northbridge/intel/e7501/raminit.c"
 #include "northbridge/intel/e7501/reset_test.c"
 #include "sdram/generic_sdram.c"
@@ -87,7 +90,7 @@ static void main(unsigned long bist)
 #endif
 	if(!bios_reset_detected()) {
         	enable_smbus();
-#if 1
+#if 0
     		dump_spd_registers(&memctrl[0]);
 //        	dump_smbus_registers();
 #endif
@@ -126,17 +129,16 @@ static void main(unsigned long bist)
 	print_debug_hex32(msr.lo);
 	print_debug("\r\n");
 #endif
-/*
-#if  0
+
+#if 0
 	ram_check(0x00000000, msr.lo+(msr.hi<<32));
-#else
-#if 1
+#endif
+
+#if 0
 	// Check 16MB of memory @ 0
 	ram_check(0x00000000, 0x01000000);
-#else
 	// Check 16MB of memory @ 2GB 
-	ram_check(0x80000000, 0x81000000);
-#endif
+//	ram_check(0x80000000, 0x81000000);
 #endif
-*/
+
 }
diff --git a/src/mainboard/tyan/s2735/cache_as_ram_auto.c b/src/mainboard/tyan/s2735/cache_as_ram_auto.c
new file mode 100644
index 0000000000..ebfc647d10
--- /dev/null
+++ b/src/mainboard/tyan/s2735/cache_as_ram_auto.c
@@ -0,0 +1,343 @@
+#define ASSEMBLY 1
+#define __ROMCC__
+ 
+#include <stdint.h>
+#include <device/pci_def.h>
+#include <arch/io.h>
+#include <device/pnp_def.h>
+#include <arch/romcc_io.h>
+#include <cpu/x86/lapic.h>
+#include "option_table.h"
+#include "pc80/mc146818rtc_early.c"
+#include "pc80/serial.c"
+#include "arch/i386/lib/console.c"
+#include "ram/ramtest.c"
+
+#if 0
+static void post_code(uint8_t value) {
+#if 1
+        int i;
+        for(i=0;i<0x80000;i++) {
+                outb(value, 0x80);
+        }
+#endif
+}
+#endif
+
+#include "southbridge/intel/i82801er/i82801er_early_smbus.c"
+#include "northbridge/intel/e7501/raminit.h"
+
+#if CONFIG_USE_INIT == 0
+#include "lib/memcpy.c"
+#endif
+
+#include "cpu/x86/lapic/boot_cpu.c"
+#include "northbridge/intel/e7501/debug.c"
+#include "superio/winbond/w83627hf/w83627hf_early_serial.c"
+
+#include "cpu/x86/mtrr/earlymtrr.c"
+#include "cpu/x86/bist.h"
+
+#define SERIAL_DEV PNP_DEV(0x2e, W83627HF_SP1)
+
+static void hard_reset(void)
+{
+        /* full reset */
+	outb(0x0a, 0x0cf9);
+        outb(0x0e, 0x0cf9);
+}
+
+static void soft_reset(void)
+{
+#if 1
+        /* link reset */
+	outb(0x02, 0x0cf9);
+        outb(0x06, 0x0cf9);
+#endif
+}
+
+static void memreset_setup(void)
+{
+}
+
+static void memreset(int controllers, const struct mem_controller *ctrl)
+{
+}
+
+static inline void activate_spd_rom(const struct mem_controller *ctrl)
+{
+	/* nothing to do */
+}
+
+static inline int spd_read_byte(unsigned device, unsigned address)
+{
+	return smbus_read_byte(device, address);
+}
+
+
+#include "northbridge/intel/e7501/raminit.c"
+#include "northbridge/intel/e7501/reset_test.c"
+#include "sdram/generic_sdram.c"
+
+
+#include "cpu/intel/car/copy_and_run.c"
+
+#if USE_FALLBACK_IMAGE == 1
+
+#include "southbridge/intel/i82801er/cmos_failover.c"
+
+void real_main(unsigned long bist);
+
+void amd64_main(unsigned long bist)
+{
+#if 1
+#if 0
+	unsigned cmos_result;
+	int i;
+	for(i=0;i<2;i++) {
+		cmos_result = cmos_read(0x10);
+		outb(cmos_result, 0x80);
+	}
+#endif
+__asm__ volatile (
+        "movl  $(DCACHE_RAM_BASE+DCACHE_RAM_SIZE-4), %esi\n\t"
+//        "movl    $(DCACHE_RAM_SIZE>>2), %ecx\n\t"
+        "movl $8, %ecx\n\t"
+".yin1x:\n\t"
+        "movl  %esi, %eax\n\t"
+
+        "movl    $0x2000, %edx\n\t"
+        "movb    %ah, %al\n\t"
+".testy1:\n\t"
+        "outb %al, $0x80\n\t"
+        "decl    %edx\n\t"
+        "jnz .testy1\n\t"
+
+        "movl  (%esi), %eax\n\t"
+        "cmpb 0xff, %al\n\t"
+        "je .yin2\n\t"
+
+        "movl    $0x2000, %edx\n\t"
+".testy2:\n\t"
+        "outb %al, $0x80\n\t"
+        "decl    %edx\n\t"
+        "jnz .testy2\n\t"
+
+".yin2:  decl     %ecx\n\t"
+        "je      .yout1x\n\t"
+        "sub     $4, %esi\n\t"
+        "jmp     .yin1x\n\t"
+".yout1x:\n\t"
+);
+#endif
+        /* Is this a deliberate reset by the bios */
+//        post_code(0x22);
+        if (bios_reset_detected() && last_boot_normal()) {
+                goto normal_image;
+        }
+        /* This is the primary cpu how should I boot? */
+        else {
+		check_cmos_failed();
+		if (do_normal_boot()) {
+        	        goto normal_image;
+	        }
+        	else {
+	                goto fallback_image;
+        	}
+	}
+ normal_image:
+//        post_code(0x23);
+        __asm__ volatile ("jmp __normal_image"
+                : /* outputs */
+                : "a" (bist) /* inputs */
+                );
+ cpu_reset:
+//        post_code(0x24);
+#if 0
+        //CPU reset will reset memtroller ???
+        asm volatile ("jmp __cpu_reset" 
+                : /* outputs */ 
+                : "a"(bist) /* inputs */
+                );
+#endif
+
+ fallback_image:
+//        post_code(0x25);
+        real_main(bist);
+}
+void real_main(unsigned long bist)
+#else
+void amd64_main(unsigned long bist)
+#endif
+{
+	static const struct mem_controller memctrl[] = {
+                {
+                        .d0 = PCI_DEV(0, 0, 0),
+                        .d0f1 = PCI_DEV(0, 0, 1),
+                        .channel0 = { (0xa<<3)|0, (0xa<<3)|1, (0xa<<3)|2, 0 },
+                        .channel1 = { (0xa<<3)|4, (0xa<<3)|5, (0xa<<3)|6, 0 },
+                },
+	};
+	
+	unsigned cpu_reset = 0;
+#if 1
+__asm__ volatile (
+        "movl  $(DCACHE_RAM_BASE+DCACHE_RAM_SIZE-4), %esi\n\t"
+//        "movl    $(DCACHE_RAM_SIZE>>2), %ecx\n\t"
+        "movl $8, %ecx\n\t"
+".zin1x:\n\t"
+        "movl  %esi, %eax\n\t"
+
+        "movl    $0x2000, %edx\n\t"
+        "movb    %ah, %al\n\t"
+".testz1:\n\t"
+        "outb %al, $0x80\n\t"
+        "decl    %edx\n\t"
+        "jnz .testz1\n\t"
+
+        "movl  (%esi), %eax\n\t"
+        "cmpb 0xff, %al\n\t"
+        "je .zin2\n\t"
+
+        "movl    $0x2000, %edx\n\t"
+".testz2:\n\t"
+        "outb %al, $0x80\n\t"
+        "decl    %edx\n\t"
+        "jnz .testz2\n\t"
+
+".zin2:  decl     %ecx\n\t"
+        "je      .zout1x\n\t"
+        "sub     $4, %esi\n\t"
+        "jmp     .zin1x\n\t"
+".zout1x:\n\t"
+);
+#endif
+
+       if (bist == 0) 
+	{
+//		early_mtrr_init();
+                enable_lapic();
+
+        }
+
+//	post_code(0x32);
+	
+ 	w83627hf_enable_serial(SERIAL_DEV, TTYS0_BASE);
+        uart_init();
+        console_init();
+
+	/* Halt if there was a built in self test failure */
+	report_bist_failure(bist);
+
+//        setup_s2735_resource_map();
+
+	if(bios_reset_detected()) {
+		cpu_reset = 1;
+		goto cpu_reset_x;
+	}
+
+	enable_smbus();
+#if 0
+	dump_spd_registers(&memctrl[0]);
+#endif
+#if 0
+	dump_smbus_registers();
+#endif
+
+	memreset_setup();
+	sdram_initialize(1, memctrl);
+
+#if 0
+	dump_pci_devices();
+#endif
+
+#if 1
+        dump_pci_device(PCI_DEV(0, 0, 0));
+#endif
+
+
+#if 1
+        {
+        	/* Check value of esp to verify if we have enough rom for stack in Cache as RAM */
+	        unsigned v_esp;
+	        __asm__ volatile (
+        	        "movl   %%esp, %0\n\t"
+	                : "=a" (v_esp)
+	        );
+#if CONFIG_USE_INIT
+	        printk_debug("v_esp=%08x\r\n", v_esp);
+#else
+	        print_debug("v_esp="); print_debug_hex32(v_esp); print_debug("\r\n");
+#endif
+        }
+
+#endif
+#if 1
+
+cpu_reset_x:
+
+#if CONFIG_USE_INIT
+        printk_debug("cpu_reset = %08x\r\n",cpu_reset);
+#else
+        print_debug("cpu_reset = "); print_debug_hex32(cpu_reset); print_debug("\r\n");
+#endif
+
+	if(cpu_reset == 0) {
+	        print_debug("Clearing initial memory region: ");
+	}
+	print_debug("No cache as ram now - ");
+
+	/* store cpu_reset to ebx */
+        __asm__ volatile (
+                "movl %0, %%ebx\n\t"
+                ::"a" (cpu_reset)
+        );
+
+	if(cpu_reset==0) {
+#define CLEAR_FIRST_1M_RAM 1
+#include "cpu/intel/car/cache_as_ram_post.c"
+	}
+	else {
+#undef CLEAR_FIRST_1M_RAM 
+#include "cpu/intel/car/cache_as_ram_post.c"
+	}
+
+	__asm__ volatile (
+                /* set new esp */ /* before _RAMBASE */
+                "movl   %0, %%ebp\n\t"
+                "movl   %0, %%esp\n\t"
+                ::"a"( _RAMBASE - 4 )
+	);
+
+	{
+		unsigned new_cpu_reset;
+
+		/* get back cpu_reset from ebx */
+		__asm__ volatile (
+			"movl %%ebx, %0\n\t"
+			:"=a" (new_cpu_reset)
+		);
+
+                /* We can not go back any more, we lost old stack data in cache as ram*/
+                if(new_cpu_reset==0) {
+                        print_debug("Use Ram as Stack now - done\r\n");
+                } else
+                {  
+                        print_debug("Use Ram as Stack now - \r\n");
+                }
+#if CONFIG_USE_INIT
+                printk_debug("new_cpu_reset = %08x\r\n", new_cpu_reset);
+#else
+                print_debug("new_cpu_reset = "); print_debug_hex32(new_cpu_reset); print_debug("\r\n");
+#endif
+	
+		/*copy and execute linuxbios_ram */
+		copy_and_run(new_cpu_reset);
+		/* We will not return */
+	}
+#endif
+
+
+	print_debug("should not be here -\r\n");
+
+}
diff --git a/src/mainboard/tyan/s2850/Options.lb b/src/mainboard/tyan/s2850/Options.lb
index c829098721..c9b56b2811 100644
--- a/src/mainboard/tyan/s2850/Options.lb
+++ b/src/mainboard/tyan/s2850/Options.lb
@@ -57,6 +57,8 @@ uses CONFIG_CONSOLE_VGA
 uses CONFIG_PCI_ROM_RUN
 uses K8_E0_MEM_HOLE_SIZEK
 
+uses CONFIG_USE_INIT
+
 ###
 ### Build options
 ###
@@ -139,8 +141,8 @@ default CONFIG_IOAPIC=1
 ##
 ## Clean up the motherboard id strings
 ##
-default MAINBOARD_PART_NUMBER="Tyan"
-default MAINBOARD_VENDOR="s2850"
+default MAINBOARD_PART_NUMBER="s2850"
+default MAINBOARD_VENDOR="Tyan"
 default MAINBOARD_PCI_SUBSYSTEM_VENDOR_ID=0x10f1
 default MAINBOARD_PCI_SUBSYSTEM_DEVICE_ID=0x2850
 
diff --git a/src/mainboard/tyan/s2875/Options.lb b/src/mainboard/tyan/s2875/Options.lb
index d1e22c0063..5851318be6 100644
--- a/src/mainboard/tyan/s2875/Options.lb
+++ b/src/mainboard/tyan/s2875/Options.lb
@@ -56,6 +56,8 @@ uses CONFIG_CONSOLE_VGA
 uses CONFIG_PCI_ROM_RUN
 uses K8_E0_MEM_HOLE_SIZEK
 
+uses CONFIG_USE_INIT
+
 ###
 ### Build options
 ###
@@ -124,8 +126,8 @@ default CONFIG_LOGICAL_CPUS=0
 default K8_E0_MEM_HOLE_SIZEK=0x100000
 
 #VGA Console
-default CONFIG_CONSOLE_VGA=1
-default CONFIG_PCI_ROM_RUN=1
+#default CONFIG_CONSOLE_VGA=1
+#default CONFIG_PCI_ROM_RUN=1
 
 ##
 ## Build code to setup a generic IOAPIC
@@ -135,8 +137,8 @@ default CONFIG_IOAPIC=1
 ##
 ## Clean up the motherboard id strings
 ##
-default MAINBOARD_PART_NUMBER="Tyan"
-default MAINBOARD_VENDOR="s2875"
+default MAINBOARD_PART_NUMBER="s2875"
+default MAINBOARD_VENDOR="Tyan"
 default MAINBOARD_PCI_SUBSYSTEM_VENDOR_ID=0x10f1
 default MAINBOARD_PCI_SUBSYSTEM_DEVICE_ID=0x2875
 
diff --git a/src/mainboard/tyan/s2880/Options.lb b/src/mainboard/tyan/s2880/Options.lb
index af9aea7b36..a6b4e86f50 100644
--- a/src/mainboard/tyan/s2880/Options.lb
+++ b/src/mainboard/tyan/s2880/Options.lb
@@ -56,6 +56,8 @@ uses CONFIG_CONSOLE_VGA
 uses CONFIG_PCI_ROM_RUN
 uses K8_E0_MEM_HOLE_SIZEK
 
+uses CONFIG_USE_INIT
+
 ###
 ### Build options
 ###
@@ -135,8 +137,8 @@ default CONFIG_IOAPIC=1
 ##
 ## Clean up the motherboard id strings
 ##
-default MAINBOARD_PART_NUMBER="Tyan"
-default MAINBOARD_VENDOR="s2880"
+default MAINBOARD_PART_NUMBER="s2880"
+default MAINBOARD_VENDOR="Tyan"
 default MAINBOARD_PCI_SUBSYSTEM_VENDOR_ID=0x10f1
 default MAINBOARD_PCI_SUBSYSTEM_DEVICE_ID=0x2880
 
diff --git a/src/mainboard/tyan/s2881/Config.lb b/src/mainboard/tyan/s2881/Config.lb
index 47ab2df45a..2e564ce9ea 100644
--- a/src/mainboard/tyan/s2881/Config.lb
+++ b/src/mainboard/tyan/s2881/Config.lb
@@ -39,10 +39,33 @@ arch i386 end
 ##
 
 driver mainboard.o
+
+#dir /drivers/si/3114
+
 if HAVE_MP_TABLE object mptable.o end
 if HAVE_PIRQ_TABLE object irq_tables.o end
 #object reset.o
 
+if USE_DCACHE_RAM
+
+if CONFIG_USE_INIT
+
+makerule ./auto.o
+        depends "$(MAINBOARD)/cache_as_ram_auto.c option_table.h"
+        action "$(CC) -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/cache_as_ram_auto.c -Os -nostdinc -nostdlib -fno-builtin -Wall -c -o auto.o" 
+end
+
+else    
+                
+makerule ./auto.inc
+        depends "$(MAINBOARD)/cache_as_ram_auto.c option_table.h"
+        action "$(CC) -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/cache_as_ram_auto.c -Os -nostdinc -nostdlib -fno-builtin -Wall -c -S -o $@"         
+        action "perl -e 's/.rodata/.rom.data/g' -pi $@"
+        action "perl -e 's/.text/.section .rom.text/g' -pi $@"
+end
+
+end
+else
 
 ##
 ## Romcc output
@@ -66,13 +89,22 @@ makerule ./auto.inc
         action  "./romcc    -mcpu=k8 -O2 -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@"
 end
 
+end
 ##
 ## Build our 16 bit and 32 bit linuxBIOS entry code
 ##
 mainboardinit cpu/x86/16bit/entry16.inc
 mainboardinit cpu/x86/32bit/entry32.inc
 ldscript /cpu/x86/16bit/entry16.lds
-ldscript /cpu/x86/32bit/entry32.lds
+if USE_DCACHE_RAM
+        if CONFIG_USE_INIT
+                ldscript /cpu/x86/32bit/entry32.lds
+        end
+
+        if CONFIG_USE_INIT
+                ldscript      /cpu/amd/car/cache_as_ram.lds
+        end
+end
 
 ##
 ## Build our reset vector (This is where linuxBIOS is entered)
@@ -85,8 +117,11 @@ else
 	ldscript /cpu/x86/32bit/reset32.lds 
 end
 
+if USE_DCACHE_RAM
+else
 ### Should this be in the northbridge code?
 mainboardinit arch/i386/lib/cpu_reset.inc
+end
 
 ##
 ## Include an id string (For safe flashing)
@@ -94,14 +129,25 @@ mainboardinit arch/i386/lib/cpu_reset.inc
 mainboardinit arch/i386/lib/id.inc
 ldscript /arch/i386/lib/id.lds
 
+if USE_DCACHE_RAM
+##
+## Setup Cache-As-Ram
+##
+mainboardinit cpu/amd/car/cache_as_ram.inc
+end
+
 ###
 ### This is the early phase of linuxBIOS startup 
 ### Things are delicate and we test to see if we should
 ### failover to another image.
 ###
 if USE_FALLBACK_IMAGE
-	ldscript /arch/i386/lib/failover.lds 
-	mainboardinit ./failover.inc
+if USE_DCACHE_RAM
+       ldscript /arch/i386/lib/failover.lds
+else
+       ldscript /arch/i386/lib/failover.lds
+        mainboardinit ./failover.inc
+end
 end
 
 ###
@@ -111,6 +157,19 @@ end
 ##
 ## Setup RAM
 ##
+if USE_DCACHE_RAM
+
+if CONFIG_USE_INIT
+initobject auto.o
+else
+mainboardinit ./auto.inc
+end
+
+else
+
+##
+## Setup RAM
+##
 mainboardinit cpu/x86/fpu/enable_fpu.inc
 mainboardinit cpu/x86/mmx/enable_mmx.inc
 mainboardinit cpu/x86/sse/enable_sse.inc
@@ -118,11 +177,13 @@ mainboardinit ./auto.inc
 mainboardinit cpu/x86/sse/disable_sse.inc
 mainboardinit cpu/x86/mmx/disable_mmx.inc
 
+end
+
 ##
 ## Include the secondary Configuration files 
 ##
 if CONFIG_CHIP_NAME
-        config chip.h
+	config chip.h
 end
 
 # sample config for tyan/s2881
diff --git a/src/mainboard/tyan/s2881/Options.lb b/src/mainboard/tyan/s2881/Options.lb
index 53ae8db518..84fa34e568 100644
--- a/src/mainboard/tyan/s2881/Options.lb
+++ b/src/mainboard/tyan/s2881/Options.lb
@@ -47,6 +47,7 @@ uses MAINBOARD_POWER_ON_AFTER_POWER_FAIL
 uses CONFIG_CONSOLE_SERIAL8250
 uses HAVE_INIT_TIMER
 uses CONFIG_GDB_STUB
+uses CONFIG_GDB_STUB
 uses CROSS_COMPILE
 uses CC
 uses HOSTCC
@@ -56,6 +57,11 @@ uses CONFIG_CONSOLE_VGA
 uses CONFIG_PCI_ROM_RUN
 uses K8_E0_MEM_HOLE_SIZEK
 
+uses USE_DCACHE_RAM
+uses DCACHE_RAM_BASE
+uses DCACHE_RAM_SIZE
+uses CONFIG_USE_INIT
+
 ###
 ### Build options
 ###
@@ -120,6 +126,9 @@ default CONFIG_MAX_CPUS=4
 default CONFIG_MAX_PHYSICAL_CPUS=2
 default CONFIG_LOGICAL_CPUS=1
 
+#CHIP_NAME ?
+default CONFIG_CHIP_NAME=1
+
 #1G memory hole
 default K8_E0_MEM_HOLE_SIZEK=0x100000
 
@@ -127,6 +136,15 @@ default K8_E0_MEM_HOLE_SIZEK=0x100000
 default CONFIG_CONSOLE_VGA=1
 default CONFIG_PCI_ROM_RUN=1
 
+
+##
+## enable CACHE_AS_RAM specifics
+##
+default USE_DCACHE_RAM=1
+default DCACHE_RAM_BASE=0xcf000
+default DCACHE_RAM_SIZE=0x1000
+default CONFIG_USE_INIT=1
+
 ##
 ## Build code to setup a generic IOAPIC
 ##
@@ -135,8 +153,8 @@ default CONFIG_IOAPIC=1
 ##
 ## Clean up the motherboard id strings
 ##
-default MAINBOARD_PART_NUMBER="Tyan"
-default MAINBOARD_VENDOR="s2881"
+default MAINBOARD_PART_NUMBER="s2881"
+default MAINBOARD_VENDOR="Tyan"
 default MAINBOARD_PCI_SUBSYSTEM_VENDOR_ID=0x10f1
 default MAINBOARD_PCI_SUBSYSTEM_DEVICE_ID=0x2881
 
diff --git a/src/mainboard/tyan/s2881/cache_as_ram_auto.c b/src/mainboard/tyan/s2881/cache_as_ram_auto.c
new file mode 100644
index 0000000000..b1e3719c72
--- /dev/null
+++ b/src/mainboard/tyan/s2881/cache_as_ram_auto.c
@@ -0,0 +1,393 @@
+#define ASSEMBLY 1
+#define __ROMCC__
+ 
+#include <stdint.h>
+#include <device/pci_def.h>
+#include <arch/io.h>
+#include <device/pnp_def.h>
+#include <arch/romcc_io.h>
+#include <cpu/x86/lapic.h>
+#include "option_table.h"
+#include "pc80/mc146818rtc_early.c"
+#include "pc80/serial.c"
+#include "arch/i386/lib/console.c"
+#include "ram/ramtest.c"
+
+#include "northbridge/amd/amdk8/cpu_rev.c"
+#define K8_HT_FREQ_1G_SUPPORT 0
+#include "northbridge/amd/amdk8/incoherent_ht.c"
+#include "southbridge/amd/amd8111/amd8111_early_smbus.c"
+#include "northbridge/amd/amdk8/raminit.h"
+#include "cpu/amd/model_fxx/apic_timer.c"
+#include "lib/delay.c"
+
+#if CONFIG_USE_INIT == 0
+#include "lib/memcpy.c"
+#endif
+
+#include "cpu/x86/lapic/boot_cpu.c"
+#include "northbridge/amd/amdk8/reset_test.c"
+#include "northbridge/amd/amdk8/debug.c"
+#include "superio/winbond/w83627hf/w83627hf_early_serial.c"
+
+#include "cpu/amd/mtrr/amd_earlymtrr.c"
+#include "cpu/x86/bist.h"
+
+#include "northbridge/amd/amdk8/setup_resource_map.c"
+
+#define SERIAL_DEV PNP_DEV(0x2e, W83627HF_SP1)
+
+static void hard_reset(void)
+{
+        set_bios_reset();
+
+        /* enable cf9 */
+        pci_write_config8(PCI_DEV(0, 0x04, 3), 0x41, 0xf1);
+        /* reset */
+        outb(0x0e, 0x0cf9);
+}
+
+static void soft_reset(void)
+{
+        set_bios_reset();
+        pci_write_config8(PCI_DEV(0, 0x04, 0), 0x47, 1);
+}
+
+static void memreset_setup(void)
+{
+   if (is_cpu_pre_c0()) {
+        outb((0 << 7)|(0 << 6)|(0<<5)|(0<<4)|(1<<2)|(0<<0), SMBUS_IO_BASE + 0xc0 + 16);  //REVC_MEMRST_EN=0
+   }
+   else {
+        outb((0 << 7)|(0 << 6)|(0<<5)|(0<<4)|(1<<2)|(1<<0), SMBUS_IO_BASE + 0xc0 + 16);  //REVC_MEMRST_EN=1
+   }
+        outb((0 << 7)|(0 << 6)|(0<<5)|(0<<4)|(1<<2)|(0<<0), SMBUS_IO_BASE + 0xc0 + 17);
+}
+
+static void memreset(int controllers, const struct mem_controller *ctrl)
+{
+   if (is_cpu_pre_c0()) {
+        udelay(800);
+        outb((0<<7)|(0<<6)|(0<<5)|(0<<4)|(1<<2)|(1<<0), SMBUS_IO_BASE + 0xc0 + 17); //REVB_MEMRST_L=1
+        udelay(90);
+   }
+}
+
+static inline void activate_spd_rom(const struct mem_controller *ctrl)
+{
+	/* nothing to do */
+}
+
+static inline int spd_read_byte(unsigned device, unsigned address)
+{
+	return smbus_read_byte(device, address);
+}
+
+#define K8_4RANK_DIMM_SUPPORT 1
+
+#include "northbridge/amd/amdk8/raminit.c"
+#include "resourcemap.c"
+#include "northbridge/amd/amdk8/coherent_ht.c"
+#include "sdram/generic_sdram.c"
+
+#if CONFIG_LOGICAL_CPUS==1
+#define SET_NB_CFG_54 1
+#include "cpu/amd/dualcore/dualcore.c"
+#endif
+
+#define FIRST_CPU  1
+#define SECOND_CPU 1
+#define TOTAL_CPUS (FIRST_CPU + SECOND_CPU)
+
+#include "cpu/amd/car/copy_and_run.c"
+
+#if USE_FALLBACK_IMAGE == 1
+
+#include "southbridge/amd/amd8111/amd8111_enable_rom.c"
+#include "northbridge/amd/amdk8/early_ht.c"
+
+void real_main(unsigned long bist);
+
+void amd64_main(unsigned long bist)
+{
+#if CONFIG_LOGICAL_CPUS==1
+        struct node_core_id id;
+#else
+        unsigned nodeid;
+#endif
+        /* Make cerain my local apic is useable */
+//        enable_lapic();
+
+#if CONFIG_LOGICAL_CPUS==1
+        id = get_node_core_id_x();
+        /* Is this a cpu only reset? */
+        if (cpu_init_detected(id.nodeid)) {
+#else
+//        nodeid = lapicid();
+	nodeid = get_node_id();
+        /* Is this a cpu only reset? */
+        if (cpu_init_detected(nodeid)) {
+#endif
+                if (last_boot_normal()) {
+                        goto normal_image;
+                } else {
+                        goto cpu_reset;
+                }
+        }
+
+        /* Is this a secondary cpu? */
+//        post_code(0x21);
+        if (!boot_cpu()) {
+                if (last_boot_normal()) {
+                        goto normal_image;
+                } else {
+                        goto fallback_image;
+                }
+        }
+
+        /* Nothing special needs to be done to find bus 0 */
+        /* Allow the HT devices to be found */
+
+        enumerate_ht_chain();
+
+        /* Setup the ck804 */
+        amd8111_enable_rom();
+
+        /* Is this a deliberate reset by the bios */
+//        post_code(0x22);
+        if (bios_reset_detected() && last_boot_normal()) {
+                goto normal_image;
+        }
+        /* This is the primary cpu how should I boot? */
+        else if (do_normal_boot()) {
+                goto normal_image;
+        }
+        else {
+                goto fallback_image;
+        }
+ normal_image:
+//        post_code(0x23);
+        __asm__ volatile ("jmp __normal_image"
+                : /* outputs */
+                : "a" (bist) /* inputs */
+                );
+ cpu_reset:
+//        post_code(0x24);
+#if 0
+        //CPU reset will reset memtroller ???
+        asm volatile ("jmp __cpu_reset" 
+                : /* outputs */ 
+                : "a"(bist) /* inputs */
+                );
+#endif
+
+ fallback_image:
+//        post_code(0x25);
+        real_main(bist);
+}
+void real_main(unsigned long bist)
+#else
+void amd64_main(unsigned long bist)
+#endif
+{
+	static const struct mem_controller cpu[] = {
+#if FIRST_CPU
+		{
+			.node_id = 0,
+			.f0 = PCI_DEV(0, 0x18, 0),
+			.f1 = PCI_DEV(0, 0x18, 1),
+			.f2 = PCI_DEV(0, 0x18, 2),
+			.f3 = PCI_DEV(0, 0x18, 3),
+			.channel0 = { (0xa<<3)|0, (0xa<<3)|2, 0, 0 },
+			.channel1 = { (0xa<<3)|1, (0xa<<3)|3, 0, 0 },
+		},
+#endif
+#if SECOND_CPU
+		{
+			.node_id = 1,
+			.f0 = PCI_DEV(0, 0x19, 0),
+			.f1 = PCI_DEV(0, 0x19, 1),
+			.f2 = PCI_DEV(0, 0x19, 2),
+			.f3 = PCI_DEV(0, 0x19, 3),
+			.channel0 = { (0xa<<3)|4, (0xa<<3)|6, 0, 0 },
+			.channel1 = { (0xa<<3)|5, (0xa<<3)|7, 0, 0 },
+		},
+#endif
+	};
+
+        int needs_reset;
+	unsigned cpu_reset = 0;
+
+        if (bist == 0) {
+#if CONFIG_LOGICAL_CPUS==1
+        	struct node_core_id id;
+#else
+	        unsigned nodeid;
+#endif
+                /* Skip this if there was a built in self test failure */
+//                amd_early_mtrr_init(); # don't need, already done in cache_as_ram
+
+#if CONFIG_LOGICAL_CPUS==1
+                set_apicid_cpuid_lo();
+		id = get_node_core_id_x(); // that is initid
+#else
+                nodeid = get_node_id();
+#endif
+
+                enable_lapic();
+                init_timer();
+
+
+#if CONFIG_LOGICAL_CPUS==1
+                if(id.coreid == 0) {
+                        if (cpu_init_detected(id.nodeid)) {
+				cpu_reset = 1;
+				goto cpu_reset_x;
+                        }
+                        distinguish_cpu_resets(id.nodeid);
+                }
+#else
+                if (cpu_init_detected(nodeid)) {
+			cpu_reset = 1;
+			goto cpu_reset_x;
+                }
+                distinguish_cpu_resets(nodeid);
+#endif
+
+
+                if (!boot_cpu()
+#if CONFIG_LOGICAL_CPUS==1 
+                        || (id.coreid != 0)
+#endif
+                ) {
+			// We need stop the CACHE as RAM for this CPU too
+			#include "cpu/amd/car/cache_as_ram_post.c"
+                        stop_this_cpu(); // it will stop all cores except core0 of cpu0
+                }
+        }
+
+	
+ 	w83627hf_enable_serial(SERIAL_DEV, TTYS0_BASE);
+        uart_init();
+        console_init();
+
+	/* Halt if there was a built in self test failure */
+	report_bist_failure(bist);
+
+        setup_s2881_resource_map();
+#if 0
+        dump_pci_device(PCI_DEV(0, 0x18, 0));
+	dump_pci_device(PCI_DEV(0, 0x19, 0));
+#endif
+
+	needs_reset = setup_coherent_ht_domain();
+	
+#if CONFIG_LOGICAL_CPUS==1
+        start_other_cores();
+#endif
+
+        needs_reset |= ht_setup_chains_x();
+
+       	if (needs_reset) {
+               	print_info("ht reset -\r\n");
+               	soft_reset();
+       	}
+
+	enable_smbus();
+#if 0
+	dump_spd_registers(&cpu[0]);
+#endif
+#if 0
+	dump_smbus_registers();
+#endif
+
+	memreset_setup();
+	sdram_initialize(sizeof(cpu)/sizeof(cpu[0]), cpu);
+
+#if 0
+	dump_pci_devices();
+#endif
+
+#if 1
+        {
+        /* Check value of esp to verify if we have enough rom for stack in Cache as RAM */
+        unsigned v_esp;
+        __asm__ volatile (
+                "movl   %%esp, %0\n\t"
+                : "=a" (v_esp)
+        );
+#if CONFIG_USE_INIT
+        printk_debug("v_esp=%08x\r\n", v_esp);
+#else           
+        print_debug("v_esp="); print_debug_hex32(v_esp); print_debug("\r\n");
+#endif    
+        }
+#endif
+
+
+cpu_reset_x:
+
+#if CONFIG_USE_INIT
+        printk_debug("cpu_reset = %08x\r\n",cpu_reset);
+#else
+        print_debug("cpu_reset = "); print_debug_hex32(cpu_reset); print_debug("\r\n");
+#endif
+
+	if(cpu_reset == 0) {
+	        print_debug("Clearing initial memory region: ");
+	}
+	print_debug("No cache as ram now - ");
+
+	/* store cpu_reset to ebx */
+        __asm__ volatile (
+                "movl %0, %%ebx\n\t"
+                ::"a" (cpu_reset)
+        );
+
+	if(cpu_reset==0) {
+#define CLEAR_FIRST_1M_RAM 1
+#include "cpu/amd/car/cache_as_ram_post.c"
+	}
+	else {
+#undef CLEAR_FIRST_1M_RAM 
+#include "cpu/amd/car/cache_as_ram_post.c"
+	}
+
+	__asm__ volatile (
+                /* set new esp */ /* before _RAMBASE */
+                "movl   %0, %%ebp\n\t"
+                "movl   %0, %%esp\n\t"
+                ::"a"( _RAMBASE - 4 )
+	);
+
+	{
+		unsigned new_cpu_reset;
+
+		/* get back cpu_reset from ebx */
+		__asm__ volatile (
+			"movl %%ebx, %0\n\t"
+			:"=a" (new_cpu_reset)
+		);
+
+		print_debug("Use Ram as Stack now - "); /* but We can not go back any more, we lost old stack data in cache as ram*/
+		if(new_cpu_reset==0) {        
+		        print_debug("done\r\n");	
+		} else 
+		{	
+			print_debug("\r\n");
+		}
+
+#if CONFIG_USE_INIT
+                printk_debug("new_cpu_reset = %08x\r\n", new_cpu_reset);
+#else
+                print_debug("new_cpu_reset = "); print_debug_hex32(new_cpu_reset); print_debug("\r\n");
+#endif
+		/*copy and execute linuxbios_ram */
+		copy_and_run(new_cpu_reset);
+		/* We will not return */
+	}
+
+
+	print_debug("should not be here -\r\n");
+
+}
diff --git a/src/mainboard/tyan/s2882/Config.lb b/src/mainboard/tyan/s2882/Config.lb
index e708936f46..7739a67ca6 100644
--- a/src/mainboard/tyan/s2882/Config.lb
+++ b/src/mainboard/tyan/s2882/Config.lb
@@ -39,10 +39,34 @@ arch i386 end
 ##
 
 driver mainboard.o
+
+#dir /drivers/si/3114
+
 if HAVE_MP_TABLE object mptable.o end
 if HAVE_PIRQ_TABLE object irq_tables.o end
 #object reset.o
 
+if USE_DCACHE_RAM
+
+if CONFIG_USE_INIT
+
+makerule ./auto.o
+        depends "$(MAINBOARD)/cache_as_ram_auto.c option_table.h"
+        action "$(CC) -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/cache_as_ram_auto.c -Os -nostdinc -nostdlib -fno-builtin -Wall -c -o auto.o" 
+end
+
+else    
+                
+makerule ./auto.inc
+        depends "$(MAINBOARD)/cache_as_ram_auto.c option_table.h"
+        action "$(CC) -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/cache_as_ram_auto.c -Os -nostdinc -nostdlib -fno-builtin -Wall -c -S -o $@"         
+        action "perl -e 's/.rodata/.rom.data/g' -pi $@"
+        action "perl -e 's/.text/.section .rom.text/g' -pi $@"
+end
+
+end
+else
+
 ##
 ## Romcc output
 ##
@@ -65,13 +89,22 @@ makerule ./auto.inc
         action  "./romcc    -mcpu=k8 -O2 -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@"
 end
 
+end
 ##
 ## Build our 16 bit and 32 bit linuxBIOS entry code
 ##
 mainboardinit cpu/x86/16bit/entry16.inc
 mainboardinit cpu/x86/32bit/entry32.inc
 ldscript /cpu/x86/16bit/entry16.lds
-ldscript /cpu/x86/32bit/entry32.lds
+if USE_DCACHE_RAM
+        if CONFIG_USE_INIT
+                ldscript /cpu/x86/32bit/entry32.lds
+        end
+
+        if CONFIG_USE_INIT
+                ldscript      /cpu/amd/car/cache_as_ram.lds
+        end
+end
 
 ##
 ## Build our reset vector (This is where linuxBIOS is entered)
@@ -84,8 +117,11 @@ else
 	ldscript /cpu/x86/32bit/reset32.lds 
 end
 
+if USE_DCACHE_RAM
+else
 ### Should this be in the northbridge code?
 mainboardinit arch/i386/lib/cpu_reset.inc
+end
 
 ##
 ## Include an id string (For safe flashing)
@@ -93,14 +129,25 @@ mainboardinit arch/i386/lib/cpu_reset.inc
 mainboardinit arch/i386/lib/id.inc
 ldscript /arch/i386/lib/id.lds
 
+if USE_DCACHE_RAM
+##
+## Setup Cache-As-Ram
+##
+mainboardinit cpu/amd/car/cache_as_ram.inc
+end
+
 ###
 ### This is the early phase of linuxBIOS startup 
 ### Things are delicate and we test to see if we should
 ### failover to another image.
 ###
 if USE_FALLBACK_IMAGE
-	ldscript /arch/i386/lib/failover.lds 
-	mainboardinit ./failover.inc
+if USE_DCACHE_RAM
+       ldscript /arch/i386/lib/failover.lds
+else
+       ldscript /arch/i386/lib/failover.lds
+        mainboardinit ./failover.inc
+end
 end
 
 ###
@@ -110,6 +157,19 @@ end
 ##
 ## Setup RAM
 ##
+if USE_DCACHE_RAM
+
+if CONFIG_USE_INIT
+initobject auto.o
+else
+mainboardinit ./auto.inc
+end
+
+else
+
+##
+## Setup RAM
+##
 mainboardinit cpu/x86/fpu/enable_fpu.inc
 mainboardinit cpu/x86/mmx/enable_mmx.inc
 mainboardinit cpu/x86/sse/enable_sse.inc
@@ -117,11 +177,13 @@ mainboardinit ./auto.inc
 mainboardinit cpu/x86/sse/disable_sse.inc
 mainboardinit cpu/x86/mmx/disable_mmx.inc
 
+end
+
 ##
 ## Include the secondary Configuration files 
 ##
 if CONFIG_CHIP_NAME
-        config chip.h
+	config chip.h
 end
 
 # sample config for tyan/s2882
diff --git a/src/mainboard/tyan/s2882/Options.lb b/src/mainboard/tyan/s2882/Options.lb
index 4f084c86ba..1249719210 100644
--- a/src/mainboard/tyan/s2882/Options.lb
+++ b/src/mainboard/tyan/s2882/Options.lb
@@ -47,6 +47,7 @@ uses MAINBOARD_POWER_ON_AFTER_POWER_FAIL
 uses CONFIG_CONSOLE_SERIAL8250
 uses HAVE_INIT_TIMER
 uses CONFIG_GDB_STUB
+uses CONFIG_GDB_STUB
 uses CROSS_COMPILE
 uses CC
 uses HOSTCC
@@ -56,6 +57,11 @@ uses CONFIG_CONSOLE_VGA
 uses CONFIG_PCI_ROM_RUN
 uses K8_E0_MEM_HOLE_SIZEK
 
+uses USE_DCACHE_RAM
+uses DCACHE_RAM_BASE
+uses DCACHE_RAM_SIZE
+uses CONFIG_USE_INIT
+
 ###
 ### Build options
 ###
@@ -120,6 +126,9 @@ default CONFIG_MAX_CPUS=4
 default CONFIG_MAX_PHYSICAL_CPUS=2
 default CONFIG_LOGICAL_CPUS=1
 
+#CHIP_NAME ?
+default CONFIG_CHIP_NAME=1
+
 #1G memory hole
 default K8_E0_MEM_HOLE_SIZEK=0x100000
 
@@ -127,6 +136,15 @@ default K8_E0_MEM_HOLE_SIZEK=0x100000
 default CONFIG_CONSOLE_VGA=1
 default CONFIG_PCI_ROM_RUN=1
 
+
+##
+## enable CACHE_AS_RAM specifics
+##
+default USE_DCACHE_RAM=1
+default DCACHE_RAM_BASE=0xcf000
+default DCACHE_RAM_SIZE=0x1000
+default CONFIG_USE_INIT=1
+
 ##
 ## Build code to setup a generic IOAPIC
 ##
@@ -135,8 +153,8 @@ default CONFIG_IOAPIC=1
 ##
 ## Clean up the motherboard id strings
 ##
-default MAINBOARD_PART_NUMBER="Tyan"
-default MAINBOARD_VENDOR="s2882"
+default MAINBOARD_PART_NUMBER="s2882"
+default MAINBOARD_VENDOR="Tyan"
 default MAINBOARD_PCI_SUBSYSTEM_VENDOR_ID=0x10f1
 default MAINBOARD_PCI_SUBSYSTEM_DEVICE_ID=0x2882
 
diff --git a/src/mainboard/tyan/s2882/cache_as_ram_auto.c b/src/mainboard/tyan/s2882/cache_as_ram_auto.c
new file mode 100644
index 0000000000..5c92e8420c
--- /dev/null
+++ b/src/mainboard/tyan/s2882/cache_as_ram_auto.c
@@ -0,0 +1,389 @@
+#define ASSEMBLY 1
+#define __ROMCC__
+ 
+#include <stdint.h>
+#include <device/pci_def.h>
+#include <arch/io.h>
+#include <device/pnp_def.h>
+#include <arch/romcc_io.h>
+#include <cpu/x86/lapic.h>
+#include "option_table.h"
+#include "pc80/mc146818rtc_early.c"
+#include "pc80/serial.c"
+#include "arch/i386/lib/console.c"
+#include "ram/ramtest.c"
+
+#include "northbridge/amd/amdk8/cpu_rev.c"
+#define K8_HT_FREQ_1G_SUPPORT 0
+#include "northbridge/amd/amdk8/incoherent_ht.c"
+#include "southbridge/amd/amd8111/amd8111_early_smbus.c"
+#include "northbridge/amd/amdk8/raminit.h"
+#include "cpu/amd/model_fxx/apic_timer.c"
+#include "lib/delay.c"
+
+#if CONFIG_USE_INIT == 0
+#include "lib/memcpy.c"
+#endif
+
+#include "cpu/x86/lapic/boot_cpu.c"
+#include "northbridge/amd/amdk8/reset_test.c"
+#include "northbridge/amd/amdk8/debug.c"
+#include "superio/winbond/w83627hf/w83627hf_early_serial.c"
+
+#include "cpu/amd/mtrr/amd_earlymtrr.c"
+#include "cpu/x86/bist.h"
+
+#include "northbridge/amd/amdk8/setup_resource_map.c"
+
+#define SERIAL_DEV PNP_DEV(0x2e, W83627HF_SP1)
+
+static void hard_reset(void)
+{
+        set_bios_reset();
+
+        /* enable cf9 */
+        pci_write_config8(PCI_DEV(0, 0x04, 3), 0x41, 0xf1);
+        /* reset */
+        outb(0x0e, 0x0cf9);
+}
+
+static void soft_reset(void)
+{
+        set_bios_reset();
+        pci_write_config8(PCI_DEV(0, 0x04, 0), 0x47, 1);
+}
+
+static void memreset_setup(void)
+{
+   if (is_cpu_pre_c0()) {
+        outb((0 << 7)|(0 << 6)|(0<<5)|(0<<4)|(1<<2)|(0<<0), SMBUS_IO_BASE + 0xc0 + 16);  //REVC_MEMRST_EN=0
+   }
+   else {
+        outb((0 << 7)|(0 << 6)|(0<<5)|(0<<4)|(1<<2)|(1<<0), SMBUS_IO_BASE + 0xc0 + 16);  //REVC_MEMRST_EN=1
+   }
+        outb((0 << 7)|(0 << 6)|(0<<5)|(0<<4)|(1<<2)|(0<<0), SMBUS_IO_BASE + 0xc0 + 17);
+}
+
+static void memreset(int controllers, const struct mem_controller *ctrl)
+{
+   if (is_cpu_pre_c0()) {
+        udelay(800);
+        outb((0<<7)|(0<<6)|(0<<5)|(0<<4)|(1<<2)|(1<<0), SMBUS_IO_BASE + 0xc0 + 17); //REVB_MEMRST_L=1
+        udelay(90);
+   }
+}
+
+static inline void activate_spd_rom(const struct mem_controller *ctrl)
+{
+	/* nothing to do */
+}
+
+static inline int spd_read_byte(unsigned device, unsigned address)
+{
+	return smbus_read_byte(device, address);
+}
+
+#define K8_4RANK_DIMM_SUPPORT 1
+
+#include "northbridge/amd/amdk8/raminit.c"
+#include "northbridge/amd/amdk8/resourcemap.c"
+#include "northbridge/amd/amdk8/coherent_ht.c"
+#include "sdram/generic_sdram.c"
+
+#if CONFIG_LOGICAL_CPUS==1
+#define SET_NB_CFG_54 1
+#include "cpu/amd/dualcore/dualcore.c"
+#endif
+
+#define FIRST_CPU  1
+#define SECOND_CPU 1
+#define TOTAL_CPUS (FIRST_CPU + SECOND_CPU)
+
+#include "cpu/amd/car/copy_and_run.c"
+
+#if USE_FALLBACK_IMAGE == 1
+
+#include "southbridge/amd/amd8111/amd8111_enable_rom.c"
+#include "northbridge/amd/amdk8/early_ht.c"
+
+void real_main(unsigned long bist);
+
+void amd64_main(unsigned long bist)
+{
+#if CONFIG_LOGICAL_CPUS==1
+        struct node_core_id id;
+#else
+        unsigned nodeid;
+#endif
+        /* Make cerain my local apic is useable */
+//        enable_lapic();
+
+#if CONFIG_LOGICAL_CPUS==1
+        id = get_node_core_id_x();
+        /* Is this a cpu only reset? */
+        if (cpu_init_detected(id.nodeid)) {
+#else
+//        nodeid = lapicid();
+	nodeid = get_node_id();
+        /* Is this a cpu only reset? */
+        if (cpu_init_detected(nodeid)) {
+#endif
+                if (last_boot_normal()) {
+                        goto normal_image;
+                } else {
+                        goto cpu_reset;
+                }
+        }
+
+        /* Is this a secondary cpu? */
+        if (!boot_cpu()) {
+                if (last_boot_normal()) {
+                        goto normal_image;
+                } else {
+                        goto fallback_image;
+                }
+        }
+
+        /* Nothing special needs to be done to find bus 0 */
+        /* Allow the HT devices to be found */
+
+        enumerate_ht_chain();
+
+        /* Setup the ck804 */
+        amd8111_enable_rom();
+
+        /* Is this a deliberate reset by the bios */
+        if (bios_reset_detected() && last_boot_normal()) {
+                goto normal_image;
+        }
+        /* This is the primary cpu how should I boot? */
+        else if (do_normal_boot()) {
+                goto normal_image;
+        }
+        else {
+                goto fallback_image;
+        }
+ normal_image:
+        __asm__ volatile ("jmp __normal_image"
+                : /* outputs */
+                : "a" (bist) /* inputs */
+                );
+ cpu_reset:
+#if 0
+        //CPU reset will reset memtroller ???
+        asm volatile ("jmp __cpu_reset" 
+                : /* outputs */ 
+                : "a"(bist) /* inputs */
+                );
+#endif
+
+ fallback_image:
+        real_main(bist);
+}
+void real_main(unsigned long bist)
+#else
+void amd64_main(unsigned long bist)
+#endif
+{
+	static const struct mem_controller cpu[] = {
+#if FIRST_CPU
+		{
+			.node_id = 0,
+			.f0 = PCI_DEV(0, 0x18, 0),
+			.f1 = PCI_DEV(0, 0x18, 1),
+			.f2 = PCI_DEV(0, 0x18, 2),
+			.f3 = PCI_DEV(0, 0x18, 3),
+			.channel0 = { (0xa<<3)|0, (0xa<<3)|2, 0, 0 },
+			.channel1 = { (0xa<<3)|1, (0xa<<3)|3, 0, 0 },
+		},
+#endif
+#if SECOND_CPU
+		{
+			.node_id = 1,
+			.f0 = PCI_DEV(0, 0x19, 0),
+			.f1 = PCI_DEV(0, 0x19, 1),
+			.f2 = PCI_DEV(0, 0x19, 2),
+			.f3 = PCI_DEV(0, 0x19, 3),
+			.channel0 = { (0xa<<3)|4, (0xa<<3)|6, 0, 0 },
+			.channel1 = { (0xa<<3)|5, (0xa<<3)|7, 0, 0 },
+		},
+#endif
+	};
+
+        int needs_reset;
+	unsigned cpu_reset = 0;
+
+        if (bist == 0) {
+#if CONFIG_LOGICAL_CPUS==1
+        	struct node_core_id id;
+#else
+	        unsigned nodeid;
+#endif
+                /* Skip this if there was a built in self test failure */
+//                amd_early_mtrr_init(); # don't need, already done in cache_as_ram
+
+#if CONFIG_LOGICAL_CPUS==1
+                set_apicid_cpuid_lo();
+		id = get_node_core_id_x(); // that is initid
+#else
+                nodeid = get_node_id();
+#endif
+
+                enable_lapic();
+                init_timer();
+
+
+#if CONFIG_LOGICAL_CPUS==1
+                if(id.coreid == 0) {
+                        if (cpu_init_detected(id.nodeid)) {
+				cpu_reset = 1;
+				goto cpu_reset_x;
+                        }
+                        distinguish_cpu_resets(id.nodeid);
+                }
+#else
+                if (cpu_init_detected(nodeid)) {
+			cpu_reset = 1;
+			goto cpu_reset_x;
+                }
+                distinguish_cpu_resets(nodeid);
+#endif
+
+
+                if (!boot_cpu()
+#if CONFIG_LOGICAL_CPUS==1 
+                        || (id.coreid != 0)
+#endif
+                ) {
+			// We need stop the CACHE as RAM for this CPU too
+			#include "cpu/amd/car/cache_as_ram_post.c"
+                        stop_this_cpu(); // it will stop all cores except core0 of cpu0
+                }
+        }
+
+	
+ 	w83627hf_enable_serial(SERIAL_DEV, TTYS0_BASE);
+        uart_init();
+        console_init();
+
+	/* Halt if there was a built in self test failure */
+	report_bist_failure(bist);
+
+        setup_default_resource_map();
+#if 0
+        dump_pci_device(PCI_DEV(0, 0x18, 0));
+	dump_pci_device(PCI_DEV(0, 0x19, 0));
+#endif
+
+	needs_reset = setup_coherent_ht_domain();
+	
+#if CONFIG_LOGICAL_CPUS==1
+        start_other_cores();
+#endif
+        needs_reset |= ht_setup_chains_x();
+
+       	if (needs_reset) {
+               	print_info("ht reset -\r\n");
+               	soft_reset();
+       	}
+
+	enable_smbus();
+#if 0
+	dump_spd_registers(&cpu[0]);
+#endif
+#if 0
+	dump_smbus_registers();
+#endif
+
+	memreset_setup();
+	sdram_initialize(sizeof(cpu)/sizeof(cpu[0]), cpu);
+
+#if 0
+	dump_pci_devices();
+#endif
+
+
+#if 1
+        {
+        /* Check value of esp to verify if we have enough rom for stack in Cache as RAM */
+        unsigned v_esp;
+        __asm__ volatile (
+                "movl   %%esp, %0\n\t"
+                : "=a" (v_esp)
+        );
+#if CONFIG_USE_INIT
+        printk_debug("v_esp=%08x\r\n", v_esp);
+#else           
+        print_debug("v_esp="); print_debug_hex32(v_esp); print_debug("\r\n");
+#endif    
+        }
+#endif
+
+
+
+cpu_reset_x:
+
+#if CONFIG_USE_INIT
+        printk_debug("cpu_reset = %08x\r\n",cpu_reset);
+#else
+        print_debug("cpu_reset = "); print_debug_hex32(cpu_reset); print_debug("\r\n");
+#endif
+
+	if(cpu_reset == 0) {
+	        print_debug("Clearing initial memory region: ");
+	}
+	print_debug("No cache as ram now - ");
+
+	/* store cpu_reset to ebx */
+        __asm__ volatile (
+                "movl %0, %%ebx\n\t"
+                ::"a" (cpu_reset)
+        );
+
+	if(cpu_reset==0) {
+#define CLEAR_FIRST_1M_RAM 1
+#include "cpu/amd/car/cache_as_ram_post.c"
+	}
+	else {
+#undef CLEAR_FIRST_1M_RAM 
+#include "cpu/amd/car/cache_as_ram_post.c"
+	}
+
+	__asm__ volatile (
+                /* set new esp */ /* before _RAMBASE */
+                "movl   %0, %%ebp\n\t"
+                "movl   %0, %%esp\n\t"
+                ::"a"( _RAMBASE - 4 )
+	);
+
+	{
+		unsigned new_cpu_reset;
+
+		/* get back cpu_reset from ebx */
+		__asm__ volatile (
+			"movl %%ebx, %0\n\t"
+			:"=a" (new_cpu_reset)
+		);
+
+		print_debug("Use Ram as Stack now - "); /* but We can not go back any more, we lost old stack data in cache as ram*/
+		if(new_cpu_reset==0) {        
+		        print_debug("done\r\n");	
+		} else 
+		{	
+			print_debug("\r\n");
+		}
+
+#if CONFIG_USE_INIT
+                printk_debug("new_cpu_reset = %08x\r\n", new_cpu_reset);
+#else
+                print_debug("new_cpu_reset = "); print_debug_hex32(new_cpu_reset); print_debug("\r\n");
+#endif
+		/*copy and execute linuxbios_ram */
+		copy_and_run(new_cpu_reset);
+		/* We will not return */
+	}
+
+
+	print_debug("should not be here -\r\n");
+
+}
diff --git a/src/mainboard/tyan/s2885/Config.lb b/src/mainboard/tyan/s2885/Config.lb
index f7374c24a7..a29c713ac6 100644
--- a/src/mainboard/tyan/s2885/Config.lb
+++ b/src/mainboard/tyan/s2885/Config.lb
@@ -46,6 +46,26 @@ if HAVE_MP_TABLE object mptable.o end
 if HAVE_PIRQ_TABLE object irq_tables.o end
 #object reset.o
 
+if USE_DCACHE_RAM
+
+if CONFIG_USE_INIT
+
+makerule ./auto.o
+        depends "$(MAINBOARD)/cache_as_ram_auto.c option_table.h"
+        action "$(CC) -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/cache_as_ram_auto.c -Os -nostdinc -nostdlib -fno-builtin -Wall -c -o auto.o" 
+end
+
+else    
+                
+makerule ./auto.inc
+        depends "$(MAINBOARD)/cache_as_ram_auto.c option_table.h"
+        action "$(CC) -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/cache_as_ram_auto.c -Os -nostdinc -nostdlib -fno-builtin -Wall -c -S -o $@"         
+        action "perl -e 's/.rodata/.rom.data/g' -pi $@"
+        action "perl -e 's/.text/.section .rom.text/g' -pi $@"
+end
+
+end
+else
 
 ##
 ## Romcc output
@@ -69,13 +89,22 @@ makerule ./auto.inc
         action  "./romcc    -mcpu=k8 -O2 -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@"
 end
 
+end
 ##
 ## Build our 16 bit and 32 bit linuxBIOS entry code
 ##
 mainboardinit cpu/x86/16bit/entry16.inc
 mainboardinit cpu/x86/32bit/entry32.inc
 ldscript /cpu/x86/16bit/entry16.lds
-ldscript /cpu/x86/32bit/entry32.lds
+if USE_DCACHE_RAM
+        if CONFIG_USE_INIT
+                ldscript /cpu/x86/32bit/entry32.lds
+        end
+
+        if CONFIG_USE_INIT
+                ldscript      /cpu/amd/car/cache_as_ram.lds
+        end
+end
 
 ##
 ## Build our reset vector (This is where linuxBIOS is entered)
@@ -88,8 +117,11 @@ else
 	ldscript /cpu/x86/32bit/reset32.lds 
 end
 
+if USE_DCACHE_RAM
+else
 ### Should this be in the northbridge code?
 mainboardinit arch/i386/lib/cpu_reset.inc
+end
 
 ##
 ## Include an id string (For safe flashing)
@@ -97,14 +129,25 @@ mainboardinit arch/i386/lib/cpu_reset.inc
 mainboardinit arch/i386/lib/id.inc
 ldscript /arch/i386/lib/id.lds
 
+if USE_DCACHE_RAM
+##
+## Setup Cache-As-Ram
+##
+mainboardinit cpu/amd/car/cache_as_ram.inc
+end
+
 ###
 ### This is the early phase of linuxBIOS startup 
 ### Things are delicate and we test to see if we should
 ### failover to another image.
 ###
 if USE_FALLBACK_IMAGE
-	ldscript /arch/i386/lib/failover.lds 
-	mainboardinit ./failover.inc
+if USE_DCACHE_RAM
+       ldscript /arch/i386/lib/failover.lds
+else
+       ldscript /arch/i386/lib/failover.lds
+        mainboardinit ./failover.inc
+end
 end
 
 ###
@@ -114,6 +157,19 @@ end
 ##
 ## Setup RAM
 ##
+if USE_DCACHE_RAM
+
+if CONFIG_USE_INIT
+initobject auto.o
+else
+mainboardinit ./auto.inc
+end
+
+else
+
+##
+## Setup RAM
+##
 mainboardinit cpu/x86/fpu/enable_fpu.inc
 mainboardinit cpu/x86/mmx/enable_mmx.inc
 mainboardinit cpu/x86/sse/enable_sse.inc
@@ -121,6 +177,8 @@ mainboardinit ./auto.inc
 mainboardinit cpu/x86/sse/disable_sse.inc
 mainboardinit cpu/x86/mmx/disable_mmx.inc
 
+end
+
 ##
 ## Include the secondary Configuration files 
 ##
diff --git a/src/mainboard/tyan/s2885/Options.lb b/src/mainboard/tyan/s2885/Options.lb
index 74aaedbe69..7bc324e606 100644
--- a/src/mainboard/tyan/s2885/Options.lb
+++ b/src/mainboard/tyan/s2885/Options.lb
@@ -57,6 +57,11 @@ uses CONFIG_CONSOLE_VGA
 uses CONFIG_PCI_ROM_RUN
 uses K8_E0_MEM_HOLE_SIZEK
 
+uses USE_DCACHE_RAM
+uses DCACHE_RAM_BASE
+uses DCACHE_RAM_SIZE
+uses CONFIG_USE_INIT
+
 ###
 ### Build options
 ###
@@ -131,6 +136,15 @@ default K8_E0_MEM_HOLE_SIZEK=0x100000
 default CONFIG_CONSOLE_VGA=1
 default CONFIG_PCI_ROM_RUN=1
 
+
+##
+## enable CACHE_AS_RAM specifics
+##
+default USE_DCACHE_RAM=1
+default DCACHE_RAM_BASE=0xcf000
+default DCACHE_RAM_SIZE=0x1000
+default CONFIG_USE_INIT=1
+
 ##
 ## Build code to setup a generic IOAPIC
 ##
@@ -139,8 +153,8 @@ default CONFIG_IOAPIC=1
 ##
 ## Clean up the motherboard id strings
 ##
-default MAINBOARD_PART_NUMBER="Tyan"
-default MAINBOARD_VENDOR="s2885"
+default MAINBOARD_PART_NUMBER="s2885"
+default MAINBOARD_VENDOR="Tyan"
 default MAINBOARD_PCI_SUBSYSTEM_VENDOR_ID=0x10f1
 default MAINBOARD_PCI_SUBSYSTEM_DEVICE_ID=0x2885
 
diff --git a/src/mainboard/tyan/s2885/cache_as_ram_auto.c b/src/mainboard/tyan/s2885/cache_as_ram_auto.c
new file mode 100644
index 0000000000..4bbbdf0e5a
--- /dev/null
+++ b/src/mainboard/tyan/s2885/cache_as_ram_auto.c
@@ -0,0 +1,472 @@
+#define ASSEMBLY 1
+#define __ROMCC__
+ 
+#include <stdint.h>
+#include <device/pci_def.h>
+#include <arch/io.h>
+#include <device/pnp_def.h>
+#include <arch/romcc_io.h>
+#include <cpu/x86/lapic.h>
+#include "option_table.h"
+#include "pc80/mc146818rtc_early.c"
+#include "pc80/serial.c"
+#include "arch/i386/lib/console.c"
+#include "ram/ramtest.c"
+
+#if 0
+static void post_code(uint8_t value) {
+#if 1
+        int i;
+        for(i=0;i<0x80000;i++) {
+                outb(value, 0x80);
+        }
+#endif
+}
+#endif
+
+#include "northbridge/amd/amdk8/cpu_rev.c"
+#define K8_HT_FREQ_1G_SUPPORT 0
+#include "northbridge/amd/amdk8/incoherent_ht.c"
+#include "southbridge/amd/amd8111/amd8111_early_smbus.c"
+#include "northbridge/amd/amdk8/raminit.h"
+#include "cpu/amd/model_fxx/apic_timer.c"
+#include "lib/delay.c"
+
+#if CONFIG_USE_INIT == 0
+#include "lib/memcpy.c"
+#endif
+
+#include "cpu/x86/lapic/boot_cpu.c"
+#include "northbridge/amd/amdk8/reset_test.c"
+#include "northbridge/amd/amdk8/debug.c"
+#include "superio/winbond/w83627hf/w83627hf_early_serial.c"
+
+#include "cpu/amd/mtrr/amd_earlymtrr.c"
+#include "cpu/x86/bist.h"
+
+#include "northbridge/amd/amdk8/setup_resource_map.c"
+
+#define SERIAL_DEV PNP_DEV(0x2e, W83627HF_SP1)
+
+static void hard_reset(void)
+{
+        set_bios_reset();
+
+        /* enable cf9 */
+        pci_write_config8(PCI_DEV(0, 0x04, 3), 0x41, 0xf1);
+        /* reset */
+        outb(0x0e, 0x0cf9);
+}
+
+static void soft_reset(void)
+{
+        set_bios_reset();
+        pci_write_config8(PCI_DEV(0, 0x04, 0), 0x47, 1);
+}
+
+static void memreset_setup(void)
+{
+   if (is_cpu_pre_c0()) {
+        outb((0 << 7)|(0 << 6)|(0<<5)|(0<<4)|(1<<2)|(0<<0), SMBUS_IO_BASE + 0xc0 + 16);  //REVC_MEMRST_EN=0
+   }
+   else {
+        outb((0 << 7)|(0 << 6)|(0<<5)|(0<<4)|(1<<2)|(1<<0), SMBUS_IO_BASE + 0xc0 + 16);  //REVC_MEMRST_EN=1
+   }
+        outb((0 << 7)|(0 << 6)|(0<<5)|(0<<4)|(1<<2)|(0<<0), SMBUS_IO_BASE + 0xc0 + 17);
+}
+
+static void memreset(int controllers, const struct mem_controller *ctrl)
+{
+   if (is_cpu_pre_c0()) {
+        udelay(800);
+        outb((0<<7)|(0<<6)|(0<<5)|(0<<4)|(1<<2)|(1<<0), SMBUS_IO_BASE + 0xc0 + 17); //REVB_MEMRST_L=1
+        udelay(90);
+   }
+}
+
+static inline void activate_spd_rom(const struct mem_controller *ctrl)
+{
+	/* nothing to do */
+}
+
+static inline int spd_read_byte(unsigned device, unsigned address)
+{
+	return smbus_read_byte(device, address);
+}
+
+#define K8_4RANK_DIMM_SUPPORT 1
+
+#include "northbridge/amd/amdk8/raminit.c"
+#if 0
+        #define ENABLE_APIC_EXT_ID 1
+        #define APIC_ID_OFFSET 0x10
+        #define LIFT_BSP_APIC_ID 0
+#else 
+        #define ENABLE_APIC_EXT_ID 0
+#endif
+#include "northbridge/amd/amdk8/coherent_ht.c"
+#include "sdram/generic_sdram.c"
+
+ /* tyan does not want the default */
+#include "resourcemap.c" 
+
+#if CONFIG_LOGICAL_CPUS==1
+#define SET_NB_CFG_54 1
+#include "cpu/amd/dualcore/dualcore.c"
+#endif
+
+#define FIRST_CPU  1
+#define SECOND_CPU 1
+#define TOTAL_CPUS (FIRST_CPU + SECOND_CPU)
+
+#include "cpu/amd/car/copy_and_run.c"
+
+#if USE_FALLBACK_IMAGE == 1
+
+#include "southbridge/amd/amd8111/amd8111_enable_rom.c"
+#include "northbridge/amd/amdk8/early_ht.c"
+
+void real_main(unsigned long bist);
+
+void amd64_main(unsigned long bist)
+{
+#if CONFIG_LOGICAL_CPUS==1
+        struct node_core_id id;
+#else
+        unsigned nodeid;
+#endif
+        /* Make cerain my local apic is useable */
+//        enable_lapic();
+
+#if CONFIG_LOGICAL_CPUS==1
+        id = get_node_core_id_x();
+        /* Is this a cpu only reset? */
+        if (cpu_init_detected(id.nodeid)) {
+#else
+//        nodeid = lapicid();
+	nodeid = get_node_id();
+        /* Is this a cpu only reset? */
+        if (cpu_init_detected(nodeid)) {
+#endif
+                if (last_boot_normal()) {
+                        goto normal_image;
+                } else {
+                        goto cpu_reset;
+                }
+        }
+
+        /* Is this a secondary cpu? */
+//        post_code(0x21);
+        if (!boot_cpu()) {
+                if (last_boot_normal()) {
+                        goto normal_image;
+                } else {
+                        goto fallback_image;
+                }
+        }
+
+        /* Nothing special needs to be done to find bus 0 */
+        /* Allow the HT devices to be found */
+
+        enumerate_ht_chain();
+
+        /* Setup the ck804 */
+        amd8111_enable_rom();
+
+        /* Is this a deliberate reset by the bios */
+//        post_code(0x22);
+        if (bios_reset_detected() && last_boot_normal()) {
+                goto normal_image;
+        }
+        /* This is the primary cpu how should I boot? */
+        else if (do_normal_boot()) {
+                goto normal_image;
+        }
+        else {
+                goto fallback_image;
+        }
+ normal_image:
+//        post_code(0x23);
+        __asm__ volatile ("jmp __normal_image"
+                : /* outputs */
+                : "a" (bist) /* inputs */
+                );
+ cpu_reset:
+//        post_code(0x24);
+#if 0
+        //CPU reset will reset memtroller ???
+        asm volatile ("jmp __cpu_reset" 
+                : /* outputs */ 
+                : "a"(bist) /* inputs */
+                );
+#endif
+
+ fallback_image:
+//        post_code(0x25);
+        real_main(bist);
+}
+void real_main(unsigned long bist)
+#else
+void amd64_main(unsigned long bist)
+#endif
+{
+	static const struct mem_controller cpu[] = {
+#if FIRST_CPU
+		{
+			.node_id = 0,
+			.f0 = PCI_DEV(0, 0x18, 0),
+			.f1 = PCI_DEV(0, 0x18, 1),
+			.f2 = PCI_DEV(0, 0x18, 2),
+			.f3 = PCI_DEV(0, 0x18, 3),
+			.channel0 = { (0xa<<3)|0, (0xa<<3)|2, 0, 0 },
+			.channel1 = { (0xa<<3)|1, (0xa<<3)|3, 0, 0 },
+		},
+#endif
+#if SECOND_CPU
+		{
+			.node_id = 1,
+			.f0 = PCI_DEV(0, 0x19, 0),
+			.f1 = PCI_DEV(0, 0x19, 1),
+			.f2 = PCI_DEV(0, 0x19, 2),
+			.f3 = PCI_DEV(0, 0x19, 3),
+			.channel0 = { (0xa<<3)|4, (0xa<<3)|6, 0, 0 },
+			.channel1 = { (0xa<<3)|5, (0xa<<3)|7, 0, 0 },
+		},
+#endif
+	};
+
+        int needs_reset;
+	unsigned cpu_reset = 0;
+
+        if (bist == 0) {
+#if CONFIG_LOGICAL_CPUS==1
+        	struct node_core_id id;
+#else
+	        unsigned nodeid;
+#endif
+                /* Skip this if there was a built in self test failure */
+//                amd_early_mtrr_init(); # don't need, already done in cache_as_ram
+
+#if CONFIG_LOGICAL_CPUS==1
+                set_apicid_cpuid_lo();
+		id = get_node_core_id_x(); // that is initid
+        #if ENABLE_APIC_EXT_ID == 1
+                if(id.coreid == 0) {
+                        enable_apic_ext_id(id.nodeid);
+                }
+        #endif
+#else
+                nodeid = get_node_id();
+        #if ENABLE_APIC_EXT_ID == 1
+                enable_apic_ext_id(nodeid);
+        #endif
+#endif
+
+                enable_lapic();
+                init_timer();
+
+//                post_code(0x30);
+
+#if CONFIG_LOGICAL_CPUS==1
+        #if ENABLE_APIC_EXT_ID == 1
+            #if LIFT_BSP_APIC_ID == 0
+                if( id.nodeid != 0 ) //all except cores in node0
+            #endif
+                        lapic_write(LAPIC_ID, ( lapic_read(LAPIC_ID) | (APIC_ID_OFFSET<<24) ) );
+        #endif
+                if(id.coreid == 0) {
+                        if (cpu_init_detected(id.nodeid)) {
+//                                __asm__ volatile ("jmp __cpu_reset");
+				cpu_reset = 1;
+				goto cpu_reset_x;
+                        }
+                        distinguish_cpu_resets(id.nodeid);
+//                        start_other_core(id.nodeid);
+                }
+#else
+        #if ENABLE_APIC_EXT_ID == 1
+            #if LIFT_BSP_APIC_ID == 0
+                if(nodeid != 0)
+            #endif
+                        lapic_write(LAPIC_ID, ( lapic_read(LAPIC_ID) | (APIC_ID_OFFSET<<24) ) ); // CPU apicid is from 0x10
+
+        #endif
+                if (cpu_init_detected(nodeid)) {
+//                        __asm__ volatile ("jmp __cpu_reset");
+			cpu_reset = 1;
+			goto cpu_reset_x;
+                }
+                distinguish_cpu_resets(nodeid);
+#endif
+
+//                post_code(0x31);
+
+                if (!boot_cpu()
+#if CONFIG_LOGICAL_CPUS==1 
+                        || (id.coreid != 0)
+#endif
+                ) {
+			// We need stop the CACHE as RAM for this CPU too
+			#include "cpu/amd/car/cache_as_ram_post.c"
+                        stop_this_cpu(); // it will stop all cores except core0 of cpu0
+                }
+        }
+
+//	post_code(0x32);
+	
+ 	w83627hf_enable_serial(SERIAL_DEV, TTYS0_BASE);
+        uart_init();
+        console_init();
+
+//	dump_mem(DCACHE_RAM_BASE+DCACHE_RAM_SIZE-0x200, DCACHE_RAM_BASE+DCACHE_RAM_SIZE);
+	
+	/* Halt if there was a built in self test failure */
+	report_bist_failure(bist);
+
+        setup_s2885_resource_map();
+#if 0
+        dump_pci_device(PCI_DEV(0, 0x18, 0));
+	dump_pci_device(PCI_DEV(0, 0x19, 0));
+#endif
+
+	needs_reset = setup_coherent_ht_domain();
+	
+#if CONFIG_LOGICAL_CPUS==1
+        // It is said that we should start core1 after all core0 launched
+        start_other_cores();
+#endif
+#if 0
+
+	// You need to preset bus num in PCI_DEV(0, 0x18,1) 0xe0, 0xe4, 0xe8, 0xec
+        needs_reset |= ht_setup_chains(2);
+#else
+	// automatically set that for you, but you might meet tight space
+        needs_reset |= ht_setup_chains_x();
+#endif
+
+       	if (needs_reset) {
+               	print_info("ht reset -\r\n");
+               	soft_reset();
+       	}
+
+	enable_smbus();
+#if 0
+	dump_spd_registers(&cpu[0]);
+#endif
+#if 0
+	dump_smbus_registers();
+#endif
+
+	memreset_setup();
+	sdram_initialize(sizeof(cpu)/sizeof(cpu[0]), cpu);
+
+#if 0
+	dump_pci_devices();
+#endif
+
+        /* Check all of memory */
+#if 0
+        msr_t msr;
+        msr = rdmsr(TOP_MEM2);
+        print_debug("TOP_MEM2: ");
+        print_debug_hex32(msr.hi);
+        print_debug_hex32(msr.lo);
+        print_debug("\r\n");
+#endif
+#if 0
+        ram_check(0x00000000, msr.lo+(msr.hi<<32));
+#endif
+
+#if 0
+        // Check 16MB of memory @ 0
+        ram_check(0x00000000, 0x00100000);
+        // Check 16MB of memory @ 2GB 
+        ram_check(0x80000000, 0x80100000);
+#endif
+
+#if 1
+        {
+        /* Check value of esp to verify if we have enough rom for stack in Cache as RAM */
+        unsigned v_esp;
+        __asm__ volatile (
+                "movl   %%esp, %0\n\t"
+                : "=a" (v_esp)
+        );
+#if CONFIG_USE_INIT
+        printk_debug("v_esp=%08x\r\n", v_esp);
+#else           
+        print_debug("v_esp="); print_debug_hex32(v_esp); print_debug("\r\n");
+#endif    
+        }
+#endif
+
+#if 1
+
+
+cpu_reset_x:
+
+#if CONFIG_USE_INIT
+        printk_debug("cpu_reset = %08x\r\n",cpu_reset);
+#else
+        print_debug("cpu_reset = "); print_debug_hex32(cpu_reset); print_debug("\r\n");
+#endif
+
+	if(cpu_reset == 0) {
+	        print_debug("Clearing initial memory region: ");
+	}
+	print_debug("No cache as ram now - ");
+
+	/* store cpu_reset to ebx */
+        __asm__ volatile (
+                "movl %0, %%ebx\n\t"
+                ::"a" (cpu_reset)
+        );
+
+	if(cpu_reset==0) {
+#define CLEAR_FIRST_1M_RAM 1
+#include "cpu/amd/car/cache_as_ram_post.c"
+	}
+	else {
+#undef CLEAR_FIRST_1M_RAM 
+#include "cpu/amd/car/cache_as_ram_post.c"
+	}
+
+	__asm__ volatile (
+                /* set new esp */ /* before _RAMBASE */
+                "movl   %0, %%ebp\n\t"
+                "movl   %0, %%esp\n\t"
+                ::"a"( _RAMBASE - 4 )
+	);
+
+	{
+		unsigned new_cpu_reset;
+
+		/* get back cpu_reset from ebx */
+		__asm__ volatile (
+			"movl %%ebx, %0\n\t"
+			:"=a" (new_cpu_reset)
+		);
+
+		print_debug("Use Ram as Stack now - "); /* but We can not go back any more, we lost old stack data in cache as ram*/
+		if(new_cpu_reset==0) {        
+		        print_debug("done\r\n");	
+		} else 
+		{	
+			print_debug("\r\n");
+		}
+
+#if CONFIG_USE_INIT
+                printk_debug("new_cpu_reset = %08x\r\n", new_cpu_reset);
+#else
+                print_debug("new_cpu_reset = "); print_debug_hex32(new_cpu_reset); print_debug("\r\n");
+#endif
+		/*copy and execute linuxbios_ram */
+		copy_and_run(new_cpu_reset);
+		/* We will not return */
+	}
+#endif
+
+
+	print_debug("should not be here -\r\n");
+
+}
diff --git a/src/mainboard/tyan/s2891/Config.lb b/src/mainboard/tyan/s2891/Config.lb
index 0f428d10c1..53a7fee36e 100644
--- a/src/mainboard/tyan/s2891/Config.lb
+++ b/src/mainboard/tyan/s2891/Config.lb
@@ -47,26 +47,51 @@ driver mainboard.o
 if HAVE_MP_TABLE object mptable.o end
 if HAVE_PIRQ_TABLE object irq_tables.o end
 #object reset.o
-##
-## Romcc output
-##
-makerule ./failover.E
-        depends "$(MAINBOARD)/failover.c ./romcc"
-        action "./romcc -E -O --label-prefix=failover -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/failover.c -o $@"
-end
 
-makerule ./failover.inc
-        depends "$(MAINBOARD)/failover.c ./romcc"
-        action "./romcc    -O --label-prefix=failover -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/failover.c -o $@"
-end
+if USE_DCACHE_RAM
+
+	if CONFIG_USE_INIT
+
+		makerule ./auto.o
+        		depends "$(MAINBOARD)/cache_as_ram_auto.c option_table.h"
+		        action "$(CC) -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/cache_as_ram_auto.c -Os -nostdinc -nostdlib -fno-builtin -Wall -c -o auto.o"
+		end
+
+	else
+
+		makerule ./auto.inc
+		        depends "$(MAINBOARD)/cache_as_ram_auto.c option_table.h"
+		        action "$(CC) -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/cache_as_ram_auto.c -Os -nostdinc -nostdlib -fno-builtin -Wall -c -S -o $@"
+			action "perl -e 's/.rodata/.rom.data/g' -pi $@"
+			action "perl -e 's/.text/.section .rom.text/g' -pi $@"
+		end
+
+	end
+else
+
+	##
+	## Romcc output
+	##
+	makerule ./failover.E
+        	depends "$(MAINBOARD)/failover.c ./romcc"
+	        action "./romcc -E -O --label-prefix=failover -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/failover.c -o $@"
+	end
+
+	makerule ./failover.inc
+        	depends "$(MAINBOARD)/failover.c ./romcc"
+	        action "./romcc    -O --label-prefix=failover -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/failover.c -o $@"
+	end
+
+	makerule ./auto.E
+        	depends "$(MAINBOARD)/auto.c option_table.h ./romcc"
+	        action  "./romcc -E -mcpu=k8 -O2 -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@"
+	end
+
+	makerule ./auto.inc
+        	depends "$(MAINBOARD)/auto.c option_table.h ./romcc"
+	        action  "./romcc    -mcpu=k8 -O2 -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@"
+	end
 
-makerule ./auto.E
-        depends "$(MAINBOARD)/auto.c option_table.h ./romcc"
-        action  "./romcc -E -mcpu=k8 -O2 -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@"
-end
-makerule ./auto.inc
-        depends "$(MAINBOARD)/auto.c option_table.h ./romcc"
-        action  "./romcc    -mcpu=k8 -O2 -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@"
 end
 
 ##
@@ -75,7 +100,16 @@ end
 mainboardinit cpu/x86/16bit/entry16.inc
 mainboardinit cpu/x86/32bit/entry32.inc
 ldscript /cpu/x86/16bit/entry16.lds
-ldscript /cpu/x86/32bit/entry32.lds
+
+if USE_DCACHE_RAM
+	if CONFIG_USE_INIT
+		ldscript /cpu/x86/32bit/entry32.lds
+	end
+
+	if CONFIG_USE_INIT
+		ldscript /cpu/amd/car/cache_as_ram.lds
+	end
+end
 
 ##
 ## Build our reset vector (This is where linuxBIOS is entered)
@@ -88,8 +122,11 @@ else
 	ldscript /cpu/x86/32bit/reset32.lds 
 end
 
-### Should this be in the northbridge code?
-mainboardinit arch/i386/lib/cpu_reset.inc
+if USE_DCACHE_RAM
+else
+	### Should this be in the northbridge code?
+	mainboardinit arch/i386/lib/cpu_reset.inc
+end
 
 ##
 ## Include an id string (For safe flashing)
@@ -105,14 +142,24 @@ if USE_FALLBACK_IMAGE
 	ldscript /southbridge/nvidia/ck804/romstrap.lds
 end
 
+if USE_DCACHE_RAM
+	##
+	## Setup Cache-As-Ram
+	##
+	mainboardinit cpu/amd/car/cache_as_ram.inc
+end
+
 ###
 ### This is the early phase of linuxBIOS startup 
 ### Things are delicate and we test to see if we should
 ### failover to another image.
 ###
 if USE_FALLBACK_IMAGE
-	ldscript /arch/i386/lib/failover.lds 
-	mainboardinit ./failover.inc
+	ldscript /arch/i386/lib/failover.lds
+	if USE_DCACHE_RAM
+	else
+		mainboardinit ./failover.inc
+	end
 end
 
 ###
@@ -122,12 +169,25 @@ end
 ##
 ## Setup RAM
 ##
-mainboardinit cpu/x86/fpu/enable_fpu.inc
-mainboardinit cpu/x86/mmx/enable_mmx.inc
-mainboardinit cpu/x86/sse/enable_sse.inc
-mainboardinit ./auto.inc
-mainboardinit cpu/x86/sse/disable_sse.inc
-mainboardinit cpu/x86/mmx/disable_mmx.inc
+if USE_DCACHE_RAM
+
+	if CONFIG_USE_INIT
+		initobject auto.o
+	else
+		mainboardinit ./auto.inc
+	end
+
+else
+	# ROMCC
+	mainboardinit cpu/x86/fpu/enable_fpu.inc
+	mainboardinit cpu/x86/mmx/enable_mmx.inc
+	mainboardinit cpu/x86/sse/enable_sse.inc
+	mainboardinit ./auto.inc
+	mainboardinit cpu/x86/sse/disable_sse.inc
+	mainboardinit cpu/x86/mmx/disable_mmx.inc
+
+end
+
 
 ##
 ## Include the secondary Configuration files 
@@ -247,7 +307,8 @@ chip northbridge/amd/amdk8/root_complex
 					#	chip drivers/ati/ragexl
                                                 chip drivers/pci/onboard
                                                         device pci 7.0 on end
-                                                        register "rom_address" = "0xfff80000"
+                                                        register "rom_address" = "0xfff80000" #for 512K
+							#register "rom_address" = "0xfff00000" #for 1M
                                                 end
 					end
                 			device pci a.0 off end # NIC
@@ -283,13 +344,14 @@ chip northbridge/amd/amdk8/root_complex
 		end #mc0
 		
 	end # pci_domain
-	
-#        chip drivers/generic/debug 
-#                device pnp 0.0 off end
-#                device pnp 0.1 off end
-#                device pnp 0.2 off end
-#                device pnp 0.3 off end
-#                device pnp 0.4 off end
-#		device pnp 0.5 on end
-#        end  
+#       chip drivers/generic/debug                      
+#                device pnp 0.0 off end # chip name      
+#                device pnp 0.1 on end # pci_regs_all
+#                device pnp 0.2 off end # mem
+#                device pnp 0.3 off end # cpuid
+#                device pnp 0.4 on end # smbus_regs_all
+#                device pnp 0.5 off end # dual core msr
+#                device pnp 0.6 off end # cache size
+#                device pnp 0.7 off end # tsc
+#       end 
 end # root_complex
diff --git a/src/mainboard/tyan/s2891/Options.lb b/src/mainboard/tyan/s2891/Options.lb
index b4a374db74..7147c69d76 100644
--- a/src/mainboard/tyan/s2891/Options.lb
+++ b/src/mainboard/tyan/s2891/Options.lb
@@ -60,10 +60,19 @@ uses K8_E0_MEM_HOLE_SIZEK
 
 uses CK804_DEVN_BASE
 
+uses USE_DCACHE_RAM
+uses DCACHE_RAM_BASE
+uses DCACHE_RAM_SIZE
+uses CONFIG_USE_INIT
+
 ## ROM_SIZE is the size of boot ROM that this board will use.
 #512K bytes 
 default ROM_SIZE=524288
 
+#1M bytes
+#default ROM_SIZE=1048576
+
+
 ##
 ## FALLBACK_SIZE is the amount of the ROM the complete fallback image will use
 ##
@@ -83,9 +92,9 @@ default HAVE_FALLBACK_BOOT=1
 ##
 default HAVE_HARD_RESET=1
 
-default HARD_RESET_BUS=1
-default HARD_RESET_DEVICE=4
-default HARD_RESET_FUNCTION=0
+#default HARD_RESET_BUS=1
+#default HARD_RESET_DEVICE=4
+#default HARD_RESET_FUNCTION=0
 
 ##
 ## Build code to export a programmable irq routing table
@@ -131,8 +140,17 @@ default CK804_DEVN_BASE=0
 #default CONFIG_CONSOLE_BTEXT=1
 
 #VGA Console
-default CONFIG_CONSOLE_VGA=1
-default CONFIG_PCI_ROM_RUN=1
+#default CONFIG_CONSOLE_VGA=1
+#default CONFIG_PCI_ROM_RUN=1
+
+##
+## enable CACHE_AS_RAM specifics
+##
+default USE_DCACHE_RAM=1
+default DCACHE_RAM_BASE=0xcf000
+default DCACHE_RAM_SIZE=0x1000
+default CONFIG_USE_INIT=1
+
 
 ##
 ## Build code to setup a generic IOAPIC
@@ -142,8 +160,8 @@ default CONFIG_IOAPIC=1
 ##
 ## Clean up the motherboard id strings
 ##
-default MAINBOARD_PART_NUMBER="Tyan"
-default MAINBOARD_VENDOR="s2891"
+default MAINBOARD_PART_NUMBER="s2891"
+default MAINBOARD_VENDOR="Tyan"
 default MAINBOARD_PCI_SUBSYSTEM_VENDOR_ID=0x10f1
 default MAINBOARD_PCI_SUBSYSTEM_DEVICE_ID=0x2891
 
diff --git a/src/mainboard/tyan/s2891/cache_as_ram_auto.c b/src/mainboard/tyan/s2891/cache_as_ram_auto.c
new file mode 100644
index 0000000000..b0ddb837a5
--- /dev/null
+++ b/src/mainboard/tyan/s2891/cache_as_ram_auto.c
@@ -0,0 +1,411 @@
+#define ASSEMBLY 1
+#define __ROMCC__
+ 
+#include <stdint.h>
+#include <device/pci_def.h>
+#include <arch/io.h>
+#include <device/pnp_def.h>
+#include <arch/romcc_io.h>
+#include <cpu/x86/lapic.h>
+#include "option_table.h"
+#include "pc80/mc146818rtc_early.c"
+#include "pc80/serial.c"
+#include "arch/i386/lib/console.c"
+#include "ram/ramtest.c"
+
+#include "northbridge/amd/amdk8/cpu_rev.c"
+//#define K8_HT_FREQ_1G_SUPPORT 1
+#include "northbridge/amd/amdk8/incoherent_ht.c"
+#include "southbridge/nvidia/ck804/ck804_early_smbus.c"
+#include "northbridge/amd/amdk8/raminit.h"
+#include "cpu/amd/model_fxx/apic_timer.c"
+#include "lib/delay.c"
+#if CONFIG_USE_INIT == 0
+#include "lib/memcpy.c"
+#endif
+#include "cpu/x86/lapic/boot_cpu.c"
+#include "northbridge/amd/amdk8/reset_test.c"
+#include "northbridge/amd/amdk8/debug.c"
+#include "superio/winbond/w83627hf/w83627hf_early_serial.c"
+
+#include "cpu/amd/mtrr/amd_earlymtrr.c"
+#include "cpu/x86/bist.h"
+
+#include "northbridge/amd/amdk8/setup_resource_map.c"
+
+#define SERIAL_DEV PNP_DEV(0x2e, W83627HF_SP1)
+
+static void hard_reset(void)
+{
+        set_bios_reset();
+
+        /* full reset */
+	outb(0x0a, 0x0cf9);
+        outb(0x0e, 0x0cf9);
+}
+
+static void soft_reset(void)
+{
+        set_bios_reset();
+#if 1
+        /* link reset */
+	outb(0x02, 0x0cf9);
+        outb(0x06, 0x0cf9);
+#endif
+}
+
+static void memreset_setup(void)
+{
+}
+
+static void memreset(int controllers, const struct mem_controller *ctrl)
+{
+}
+
+static inline void activate_spd_rom(const struct mem_controller *ctrl)
+{
+	/* nothing to do */
+}
+
+static inline int spd_read_byte(unsigned device, unsigned address)
+{
+	return smbus_read_byte(device, address);
+}
+
+#define K8_4RANK_DIMM_SUPPORT 1
+
+#include "northbridge/amd/amdk8/raminit.c"
+#include "northbridge/amd/amdk8/coherent_ht.c"
+#include "sdram/generic_sdram.c"
+
+ /* tyan does not want the default */
+#include "resourcemap.c" 
+
+#if CONFIG_LOGICAL_CPUS==1
+#define SET_NB_CFG_54 1
+#include "cpu/amd/dualcore/dualcore.c"
+#endif
+
+#define FIRST_CPU  1
+#define SECOND_CPU 1
+#define TOTAL_CPUS (FIRST_CPU + SECOND_CPU)
+
+#define CK804_NUM 1
+#include "southbridge/nvidia/ck804/ck804_early_setup_ss.h"
+#include "southbridge/nvidia/ck804/ck804_early_setup.c"
+
+#include "cpu/amd/car/copy_and_run.c"
+
+#if USE_FALLBACK_IMAGE == 1
+
+#include "southbridge/nvidia/ck804/ck804_enable_rom.c"
+#include "northbridge/amd/amdk8/early_ht.c"
+
+static void sio_setup(void)
+{
+
+        unsigned value;
+        uint32_t dword;
+        uint8_t byte;
+
+        byte = pci_read_config32(PCI_DEV(0, CK804_DEVN_BASE+1 , 0), 0x7b);
+        byte |= 0x20;
+        pci_write_config8(PCI_DEV(0, CK804_DEVN_BASE+1 , 0), 0x7b, byte);
+
+        dword = pci_read_config32(PCI_DEV(0, CK804_DEVN_BASE+1 , 0), 0xa0);
+        dword |= (1<<0) | (1<<1);
+        pci_write_config32(PCI_DEV(0, CK804_DEVN_BASE+1 , 0), 0xa0, dword);
+
+#if 1   
+        dword = pci_read_config32(PCI_DEV(0, CK804_DEVN_BASE+1 , 0), 0xa4);
+        dword |= (1<<16);  
+        pci_write_config32(PCI_DEV(0, CK804_DEVN_BASE+1 , 0), 0xa4, dword);
+
+#endif
+
+}
+void real_main(unsigned long bist);
+
+void amd64_main(unsigned long bist)
+{
+#if CONFIG_LOGICAL_CPUS==1
+        struct node_core_id id;
+#else
+        unsigned nodeid;
+#endif
+        /* Make cerain my local apic is useable */
+//        enable_lapic();
+
+#if CONFIG_LOGICAL_CPUS==1
+        id = get_node_core_id_x();
+        /* Is this a cpu only reset? */
+        if (cpu_init_detected(id.nodeid)) {
+#else
+//        nodeid = lapicid() & 0xf;
+        nodeid = get_node_id();
+        /* Is this a cpu only reset? */
+        if (cpu_init_detected(nodeid)) {
+#endif
+                if (last_boot_normal()) {
+                        goto normal_image;
+                } else {
+                        goto cpu_reset;
+                }
+        }
+
+        /* Is this a secondary cpu? */
+        if (!boot_cpu()) {
+                if (last_boot_normal()) {
+                        goto normal_image;
+                } else {
+                        goto fallback_image;
+                }
+        }
+
+        /* Nothing special needs to be done to find bus 0 */
+        /* Allow the HT devices to be found */
+
+        enumerate_ht_chain();
+
+        sio_setup();
+
+        /* Setup the ck804 */
+        ck804_enable_rom();
+
+        /* Is this a deliberate reset by the bios */
+        if (bios_reset_detected() && last_boot_normal()) {
+                goto normal_image;
+        }
+        /* This is the primary cpu how should I boot? */
+        else if (do_normal_boot()) {
+                goto normal_image;
+        }
+        else {
+                goto fallback_image;
+        }
+ normal_image:
+        __asm__ volatile ("jmp __normal_image"
+                : /* outputs */
+                : "a" (bist) /* inputs */
+                );
+ cpu_reset:
+#if 0
+        //CPU reset will reset memtroller ???
+        asm volatile ("jmp __cpu_reset" 
+                : /* outputs */ 
+                : "a"(bist) /* inputs */
+                );
+#endif
+
+ fallback_image:
+        real_main(bist);
+}
+void real_main(unsigned long bist)
+#else
+void amd64_main(unsigned long bist)
+#endif
+{
+	static const struct mem_controller cpu[] = {
+#if FIRST_CPU
+		{
+			.node_id = 0,
+			.f0 = PCI_DEV(0, 0x18, 0),
+			.f1 = PCI_DEV(0, 0x18, 1),
+			.f2 = PCI_DEV(0, 0x18, 2),
+			.f3 = PCI_DEV(0, 0x18, 3),
+			.channel0 = { (0xa<<3)|0, (0xa<<3)|2, 0, 0 },
+			.channel1 = { (0xa<<3)|1, (0xa<<3)|3, 0, 0 },
+		},
+#endif
+#if SECOND_CPU
+		{
+			.node_id = 1,
+			.f0 = PCI_DEV(0, 0x19, 0),
+			.f1 = PCI_DEV(0, 0x19, 1),
+			.f2 = PCI_DEV(0, 0x19, 2),
+			.f3 = PCI_DEV(0, 0x19, 3),
+			.channel0 = { (0xa<<3)|4, (0xa<<3)|6, 0, 0 },
+			.channel1 = { (0xa<<3)|5, (0xa<<3)|7, 0, 0 },
+		},
+#endif
+	};
+
+        int needs_reset;
+	unsigned cpu_reset = 0;
+
+        if (bist == 0) {
+#if CONFIG_LOGICAL_CPUS==1
+                struct node_core_id id;
+#else
+                unsigned nodeid;
+#endif
+                /* Skip this if there was a built in self test failure */
+//                amd_early_mtrr_init(); # don't need, already done in cache_as_ram
+
+#if CONFIG_LOGICAL_CPUS==1
+                set_apicid_cpuid_lo();
+                id = get_node_core_id_x(); // that is initid
+#else
+                nodeid = get_node_id();
+#endif
+
+                enable_lapic();
+//                init_timer();
+
+#if CONFIG_LOGICAL_CPUS==1
+                if(id.coreid == 0) {
+                        if (cpu_init_detected(id.nodeid)) {
+                                cpu_reset = 1;
+                                goto cpu_reset_x;
+                        }
+                        distinguish_cpu_resets(id.nodeid);
+                }
+#else
+                if (cpu_init_detected(nodeid)) {
+                                cpu_reset = 1;
+                                goto cpu_reset_x;
+                }
+                distinguish_cpu_resets(nodeid);
+#endif
+
+
+                if (!boot_cpu()
+#if CONFIG_LOGICAL_CPUS==1 
+                        || (id.coreid != 0)
+#endif
+                ) {
+                        // We need stop the CACHE as RAM for this CPU too
+                        #include "cpu/amd/car/cache_as_ram_post.c"
+                        stop_this_cpu(); // it will stop all cores except core0 of cpu0
+                }
+
+        }
+
+	init_timer(); // only do it it first CPU
+
+	
+ 	w83627hf_enable_serial(SERIAL_DEV, TTYS0_BASE);
+        uart_init();
+        console_init();
+	
+	/* Halt if there was a built in self test failure */
+	report_bist_failure(bist);
+
+        setup_s2891_resource_map();
+#if 0
+        dump_pci_device(PCI_DEV(0, 0x18, 0));
+	dump_pci_device(PCI_DEV(0, 0x19, 0));
+#endif
+
+	needs_reset = setup_coherent_ht_domain();
+	
+#if CONFIG_LOGICAL_CPUS==1
+        start_other_cores();
+#endif
+        needs_reset |= ht_setup_chains_x();
+
+        needs_reset |= ck804_early_setup_x();
+
+       	if (needs_reset) {
+               	print_info("ht reset -\r\n");
+               	soft_reset();
+       	}
+
+	enable_smbus();
+#if 0
+	dump_spd_registers(&cpu[0]);
+#endif
+#if 0
+	dump_smbus_registers();
+#endif
+
+	memreset_setup();
+	sdram_initialize(sizeof(cpu)/sizeof(cpu[0]), cpu);
+
+#if 0
+	dump_pci_devices();
+#endif
+
+#if 1
+        {
+        	/* Check value of esp to verify if we have enough rom for stack in Cache as RAM */
+	        unsigned v_esp;
+	        __asm__ volatile (
+        	        "movl   %%esp, %0\n\t"
+	                : "=a" (v_esp)
+	        );
+#if CONFIG_USE_INIT
+	        printk_debug("v_esp=%08x\r\n", v_esp);
+#else
+	        print_debug("v_esp="); print_debug_hex32(v_esp); print_debug("\r\n");
+#endif
+        }
+
+#endif
+
+cpu_reset_x:
+
+#if CONFIG_USE_INIT
+        printk_debug("cpu_reset = %08x\r\n",cpu_reset);
+#else
+        print_debug("cpu_reset = "); print_debug_hex32(cpu_reset); print_debug("\r\n");
+#endif
+
+	if(cpu_reset == 0) {
+	        print_debug("Clearing initial memory region: ");
+	}
+	print_debug("No cache as ram now - ");
+
+	/* store cpu_reset to ebx */
+        __asm__ volatile (
+                "movl %0, %%ebx\n\t"
+                ::"a" (cpu_reset)
+        );
+
+	if(cpu_reset==0) {
+#define CLEAR_FIRST_1M_RAM 1
+#include "cpu/amd/car/cache_as_ram_post.c"
+	}
+	else {
+#undef CLEAR_FIRST_1M_RAM 
+#include "cpu/amd/car/cache_as_ram_post.c"
+	}
+
+	__asm__ volatile (
+                /* set new esp */ /* before _RAMBASE */
+                "movl   %0, %%ebp\n\t"
+                "movl   %0, %%esp\n\t"
+                ::"a"( _RAMBASE - 4 )
+	);
+
+	{
+		unsigned new_cpu_reset;
+
+		/* get back cpu_reset from ebx */
+		__asm__ volatile (
+			"movl %%ebx, %0\n\t"
+			:"=a" (new_cpu_reset)
+		);
+
+                /* We can not go back any more, we lost old stack data in cache as ram*/
+                if(new_cpu_reset==0) {
+                        print_debug("Use Ram as Stack now - done\r\n");
+                } else
+                {  
+                        print_debug("Use Ram as Stack now - \r\n");
+                }
+#if CONFIG_USE_INIT
+                printk_debug("new_cpu_reset = %08x\r\n", new_cpu_reset);
+#else
+                print_debug("new_cpu_reset = "); print_debug_hex32(new_cpu_reset); print_debug("\r\n");
+#endif
+	
+		/*copy and execute linuxbios_ram */
+		copy_and_run(new_cpu_reset);
+		/* We will not return */
+	}
+
+
+	print_debug("should not be here -\r\n");
+
+}
diff --git a/src/mainboard/tyan/s2892/Config.lb b/src/mainboard/tyan/s2892/Config.lb
index 215c4a80db..504f12d270 100644
--- a/src/mainboard/tyan/s2892/Config.lb
+++ b/src/mainboard/tyan/s2892/Config.lb
@@ -47,6 +47,28 @@ driver mainboard.o
 if HAVE_MP_TABLE object mptable.o end
 if HAVE_PIRQ_TABLE object irq_tables.o end
 #object reset.o
+
+if USE_DCACHE_RAM
+
+if CONFIG_USE_INIT
+
+makerule ./auto.o
+        depends "$(MAINBOARD)/cache_as_ram_auto.c option_table.h"
+        action "$(CC) -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/cache_as_ram_auto.c -Os -nostdinc -nostdlib -fno-builtin -Wall -c -o auto.o"
+end
+
+else
+
+makerule ./auto.inc
+        depends "$(MAINBOARD)/cache_as_ram_auto.c option_table.h"
+        action "$(CC) -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/cache_as_ram_auto.c -Os -nostdinc -nostdlib -fno-builtin -Wall -c -S -o $@"
+	action "perl -e 's/.rodata/.rom.data/g' -pi $@"
+	action "perl -e 's/.text/.section .rom.text/g' -pi $@"
+end
+
+end
+else
+
 ##
 ## Romcc output
 ##
@@ -69,13 +91,25 @@ makerule ./auto.inc
         action  "./romcc    -mcpu=k8 -O2 -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@"
 end
 
+
+end
+
 ##
 ## Build our 16 bit and 32 bit linuxBIOS entry code
 ##
 mainboardinit cpu/x86/16bit/entry16.inc
 mainboardinit cpu/x86/32bit/entry32.inc
 ldscript /cpu/x86/16bit/entry16.lds
-ldscript /cpu/x86/32bit/entry32.lds
+
+if USE_DCACHE_RAM
+	if CONFIG_USE_INIT
+		ldscript /cpu/x86/32bit/entry32.lds
+	end
+
+	if CONFIG_USE_INIT
+		ldscript      /cpu/amd/car/cache_as_ram.lds
+	end
+end
 
 ##
 ## Build our reset vector (This is where linuxBIOS is entered)
@@ -88,8 +122,11 @@ else
 	ldscript /cpu/x86/32bit/reset32.lds 
 end
 
+if USE_DCACHE_RAM
+else
 ### Should this be in the northbridge code?
 mainboardinit arch/i386/lib/cpu_reset.inc
+end
 
 ##
 ## Include an id string (For safe flashing)
@@ -105,15 +142,26 @@ if USE_FALLBACK_IMAGE
 	ldscript /southbridge/nvidia/ck804/romstrap.lds
 end
 
+if USE_DCACHE_RAM
+##
+## Setup Cache-As-Ram
+##
+mainboardinit cpu/amd/car/cache_as_ram.inc
+end
+
 ###
 ### This is the early phase of linuxBIOS startup 
 ### Things are delicate and we test to see if we should
 ### failover to another image.
 ###
 if USE_FALLBACK_IMAGE
-	ldscript /arch/i386/lib/failover.lds 
+if USE_DCACHE_RAM
+       ldscript /arch/i386/lib/failover.lds 
+else
+       ldscript /arch/i386/lib/failover.lds 
 	mainboardinit ./failover.inc
 end
+end
 
 ###
 ### O.k. We aren't just an intermediary anymore!
@@ -122,6 +170,16 @@ end
 ##
 ## Setup RAM
 ##
+if USE_DCACHE_RAM
+
+if CONFIG_USE_INIT
+initobject auto.o
+else
+mainboardinit ./auto.inc
+end
+
+else
+# ROMCC
 mainboardinit cpu/x86/fpu/enable_fpu.inc
 mainboardinit cpu/x86/mmx/enable_mmx.inc
 mainboardinit cpu/x86/sse/enable_sse.inc
@@ -129,6 +187,8 @@ mainboardinit ./auto.inc
 mainboardinit cpu/x86/sse/disable_sse.inc
 mainboardinit cpu/x86/mmx/disable_mmx.inc
 
+end
+
 ##
 ## Include the secondary Configuration files 
 ##
diff --git a/src/mainboard/tyan/s2892/Options.lb b/src/mainboard/tyan/s2892/Options.lb
index 6423773a27..20b58bce85 100644
--- a/src/mainboard/tyan/s2892/Options.lb
+++ b/src/mainboard/tyan/s2892/Options.lb
@@ -60,10 +60,19 @@ uses K8_E0_MEM_HOLE_SIZEK
 
 uses CK804_DEVN_BASE
 
+uses USE_DCACHE_RAM
+uses DCACHE_RAM_BASE
+uses DCACHE_RAM_SIZE
+uses CONFIG_USE_INIT
+
 ## ROM_SIZE is the size of boot ROM that this board will use.
 #512K bytes 
 default ROM_SIZE=524288
 
+#1M bytes
+#default ROM_SIZE=1048576
+
+
 ##
 ## FALLBACK_SIZE is the amount of the ROM the complete fallback image will use
 ##
@@ -83,9 +92,9 @@ default HAVE_FALLBACK_BOOT=1
 ##
 default HAVE_HARD_RESET=1
 
-default HARD_RESET_BUS=1
-default HARD_RESET_DEVICE=4
-default HARD_RESET_FUNCTION=0
+#default HARD_RESET_BUS=1
+#default HARD_RESET_DEVICE=4
+#default HARD_RESET_FUNCTION=0
 
 ##
 ## Build code to export a programmable irq routing table
@@ -134,6 +143,14 @@ default CK804_DEVN_BASE=0
 default CONFIG_CONSOLE_VGA=1
 default CONFIG_PCI_ROM_RUN=1
 
+##
+## enable CACHE_AS_RAM specifics
+##
+default USE_DCACHE_RAM=1
+default DCACHE_RAM_BASE=0xcf000
+default DCACHE_RAM_SIZE=0x1000
+default CONFIG_USE_INIT=1
+
 
 ##
 ## Build code to setup a generic IOAPIC
@@ -143,8 +160,8 @@ default CONFIG_IOAPIC=1
 ##
 ## Clean up the motherboard id strings
 ##
-default MAINBOARD_PART_NUMBER="Tyan"
-default MAINBOARD_VENDOR="s2892"
+default MAINBOARD_PART_NUMBER="s2892"
+default MAINBOARD_VENDOR="Tyan"
 default MAINBOARD_PCI_SUBSYSTEM_VENDOR_ID=0x10f1
 default MAINBOARD_PCI_SUBSYSTEM_DEVICE_ID=0x2892
 
diff --git a/src/mainboard/tyan/s2892/cache_as_ram_auto.c b/src/mainboard/tyan/s2892/cache_as_ram_auto.c
new file mode 100644
index 0000000000..14b15d4775
--- /dev/null
+++ b/src/mainboard/tyan/s2892/cache_as_ram_auto.c
@@ -0,0 +1,415 @@
+#define ASSEMBLY 1
+#define __ROMCC__
+ 
+#include <stdint.h>
+#include <device/pci_def.h>
+#include <arch/io.h>
+#include <device/pnp_def.h>
+#include <arch/romcc_io.h>
+#include <cpu/x86/lapic.h>
+#include "option_table.h"
+#include "pc80/mc146818rtc_early.c"
+#include "pc80/serial.c"
+#include "arch/i386/lib/console.c"
+#include "ram/ramtest.c"
+
+#include "northbridge/amd/amdk8/cpu_rev.c"
+#define K8_HT_FREQ_1G_SUPPORT 0
+#include "northbridge/amd/amdk8/incoherent_ht.c"
+#include "southbridge/nvidia/ck804/ck804_early_smbus.c"
+#include "northbridge/amd/amdk8/raminit.h"
+#include "cpu/amd/model_fxx/apic_timer.c"
+#include "lib/delay.c"
+
+#if CONFIG_USE_INIT == 0
+#include "lib/memcpy.c"
+#endif
+
+#include "cpu/x86/lapic/boot_cpu.c"
+#include "northbridge/amd/amdk8/reset_test.c"
+#include "northbridge/amd/amdk8/debug.c"
+#include "superio/winbond/w83627hf/w83627hf_early_serial.c"
+
+#include "cpu/amd/mtrr/amd_earlymtrr.c"
+#include "cpu/x86/bist.h"
+
+#include "northbridge/amd/amdk8/setup_resource_map.c"
+
+#define SERIAL_DEV PNP_DEV(0x2e, W83627HF_SP1)
+
+static void hard_reset(void)
+{
+        set_bios_reset();
+
+        /* full reset */
+	outb(0x0a, 0x0cf9);
+        outb(0x0e, 0x0cf9);
+}
+
+static void soft_reset(void)
+{
+        set_bios_reset();
+#if 1
+        /* link reset */
+	outb(0x02, 0x0cf9);
+        outb(0x06, 0x0cf9);
+#endif
+}
+
+static void memreset_setup(void)
+{
+}
+
+static void memreset(int controllers, const struct mem_controller *ctrl)
+{
+}
+
+static inline void activate_spd_rom(const struct mem_controller *ctrl)
+{
+	/* nothing to do */
+}
+
+static inline int spd_read_byte(unsigned device, unsigned address)
+{
+	return smbus_read_byte(device, address);
+}
+
+#define K8_4RANK_DIMM_SUPPORT 1
+
+#include "northbridge/amd/amdk8/raminit.c"
+#include "northbridge/amd/amdk8/coherent_ht.c"
+#include "sdram/generic_sdram.c"
+
+ /* tyan does not want the default */
+#include "resourcemap.c" 
+
+#if CONFIG_LOGICAL_CPUS==1
+#define SET_NB_CFG_54 1
+#include "cpu/amd/dualcore/dualcore.c"
+#endif
+
+#define FIRST_CPU  1
+#define SECOND_CPU 1
+#define TOTAL_CPUS (FIRST_CPU + SECOND_CPU)
+
+#define CK804_NUM 1
+#include "southbridge/nvidia/ck804/ck804_early_setup_ss.h"
+//set GPIO to input mode
+#define CK804_MB_SETUP \
+                RES_PORT_IO_8, SYSCTRL_IO_BASE + 0xc0+15, ~(0xff), ((0<<4)|(0<<2)|(0<<0)),/* M8,GPIO16, PCIXA_PRSNT2_L*/ \
+                RES_PORT_IO_8, SYSCTRL_IO_BASE + 0xc0+44, ~(0xff), ((0<<4)|(0<<2)|(0<<0)),/* P5,GPIO45, PCIXA_PRSNT1_L*/ \
+                RES_PORT_IO_8, SYSCTRL_IO_BASE + 0xc0+16, ~(0xff), ((0<<4)|(0<<2)|(0<<0)),/* K4,GPIO17, PCIXB_PRSNT1_L*/ \
+                RES_PORT_IO_8, SYSCTRL_IO_BASE + 0xc0+45, ~(0xff), ((0<<4)|(0<<2)|(0<<0)),/* P7,GPIO46, PCIXB_PRSNT2_L*/ \
+
+#include "southbridge/nvidia/ck804/ck804_early_setup.c"
+
+#include "cpu/amd/car/copy_and_run.c"
+
+#if USE_FALLBACK_IMAGE == 1
+
+#include "southbridge/nvidia/ck804/ck804_enable_rom.c"
+#include "northbridge/amd/amdk8/early_ht.c"
+
+static void sio_setup(void)
+{
+
+        unsigned value;
+        uint32_t dword;
+        uint8_t byte;
+
+        byte = pci_read_config32(PCI_DEV(0, CK804_DEVN_BASE+1 , 0), 0x7b);
+        byte |= 0x20;
+        pci_write_config8(PCI_DEV(0, CK804_DEVN_BASE+1 , 0), 0x7b, byte);
+
+        dword = pci_read_config32(PCI_DEV(0, CK804_DEVN_BASE+1 , 0), 0xa0);
+        dword |= (1<<0);
+        pci_write_config32(PCI_DEV(0, CK804_DEVN_BASE+1 , 0), 0xa0, dword);
+
+
+}
+void real_main(unsigned long bist);
+
+void amd64_main(unsigned long bist)
+{
+#if CONFIG_LOGICAL_CPUS==1
+        struct node_core_id id;
+#else
+        unsigned nodeid;
+#endif
+        /* Make cerain my local apic is useable */
+//        enable_lapic();
+
+#if CONFIG_LOGICAL_CPUS==1
+        id = get_node_core_id_x();
+        /* Is this a cpu only reset? */
+        if (cpu_init_detected(id.nodeid)) {
+#else
+//        nodeid = lapicid() & 0xf;
+        nodeid = get_node_id();
+        /* Is this a cpu only reset? */
+        if (cpu_init_detected(nodeid)) {
+#endif
+                if (last_boot_normal()) {
+                        goto normal_image;
+                } else {
+                        goto cpu_reset;
+                }
+        }
+
+        /* Is this a secondary cpu? */
+        if (!boot_cpu()) {
+                if (last_boot_normal()) {
+                        goto normal_image;
+                } else {
+                        goto fallback_image;
+                }
+        }
+
+        /* Nothing special needs to be done to find bus 0 */
+        /* Allow the HT devices to be found */
+
+        enumerate_ht_chain();
+
+        sio_setup();
+
+        /* Setup the ck804 */
+        ck804_enable_rom();
+
+        /* Is this a deliberate reset by the bios */
+        if (bios_reset_detected() && last_boot_normal()) {
+                goto normal_image;
+        }
+        /* This is the primary cpu how should I boot? */
+        else if (do_normal_boot()) {
+                goto normal_image;
+        }
+        else {
+                goto fallback_image;
+        }
+ normal_image:
+        __asm__ volatile ("jmp __normal_image"
+                : /* outputs */
+                : "a" (bist) /* inputs */
+                );
+ cpu_reset:
+#if 0
+        //CPU reset will reset memtroller ???
+        asm volatile ("jmp __cpu_reset" 
+                : /* outputs */ 
+                : "a"(bist) /* inputs */
+                );
+#endif
+
+ fallback_image:
+        real_main(bist);
+}
+void real_main(unsigned long bist)
+#else
+void amd64_main(unsigned long bist)
+#endif
+{
+	static const struct mem_controller cpu[] = {
+#if FIRST_CPU
+		{
+			.node_id = 0,
+			.f0 = PCI_DEV(0, 0x18, 0),
+			.f1 = PCI_DEV(0, 0x18, 1),
+			.f2 = PCI_DEV(0, 0x18, 2),
+			.f3 = PCI_DEV(0, 0x18, 3),
+			.channel0 = { (0xa<<3)|0, (0xa<<3)|2, 0, 0 },
+			.channel1 = { (0xa<<3)|1, (0xa<<3)|3, 0, 0 },
+		},
+#endif
+#if SECOND_CPU
+		{
+			.node_id = 1,
+			.f0 = PCI_DEV(0, 0x19, 0),
+			.f1 = PCI_DEV(0, 0x19, 1),
+			.f2 = PCI_DEV(0, 0x19, 2),
+			.f3 = PCI_DEV(0, 0x19, 3),
+			.channel0 = { (0xa<<3)|4, (0xa<<3)|6, 0, 0 },
+			.channel1 = { (0xa<<3)|5, (0xa<<3)|7, 0, 0 },
+		},
+#endif
+	};
+
+        int needs_reset;
+	unsigned cpu_reset = 0;
+
+        if (bist == 0) {
+#if CONFIG_LOGICAL_CPUS==1
+                struct node_core_id id;
+#else
+                unsigned nodeid;
+#endif
+                /* Skip this if there was a built in self test failure */
+//                amd_early_mtrr_init(); # don't need, already done in cache_as_ram
+
+#if CONFIG_LOGICAL_CPUS==1
+                set_apicid_cpuid_lo();
+                id = get_node_core_id_x(); // that is initid
+#else
+                nodeid = get_node_id();
+#endif
+
+                enable_lapic();
+//                init_timer();
+
+#if CONFIG_LOGICAL_CPUS==1
+                if(id.coreid == 0) {
+                        if (cpu_init_detected(id.nodeid)) {
+                                cpu_reset = 1;
+                                goto cpu_reset_x;
+                        }
+                        distinguish_cpu_resets(id.nodeid);
+                }
+#else
+                if (cpu_init_detected(nodeid)) {
+                                cpu_reset = 1;
+                                goto cpu_reset_x;
+                }
+                distinguish_cpu_resets(nodeid);
+#endif
+
+
+                if (!boot_cpu()
+#if CONFIG_LOGICAL_CPUS==1 
+                        || (id.coreid != 0)
+#endif
+                ) {
+                        // We need stop the CACHE as RAM for this CPU too
+                        #include "cpu/amd/car/cache_as_ram_post.c"
+                        stop_this_cpu(); // it will stop all cores except core0 of cpu0
+                }
+
+        }
+
+	init_timer(); // only do it it first CPU
+
+	
+ 	w83627hf_enable_serial(SERIAL_DEV, TTYS0_BASE);
+        uart_init();
+        console_init();
+	
+	/* Halt if there was a built in self test failure */
+	report_bist_failure(bist);
+
+        setup_s2892_resource_map();
+#if 0
+        dump_pci_device(PCI_DEV(0, 0x18, 0));
+	dump_pci_device(PCI_DEV(0, 0x19, 0));
+#endif
+
+	needs_reset = setup_coherent_ht_domain();
+	
+#if CONFIG_LOGICAL_CPUS==1
+        // It is said that we should start core1 after all core0 launched
+        start_other_cores();
+#endif
+        needs_reset |= ht_setup_chains_x();
+
+        needs_reset |= ck804_early_setup_x();
+
+       	if (needs_reset) {
+               	print_info("ht reset -\r\n");
+               	soft_reset();
+       	}
+
+	enable_smbus();
+#if 0
+	dump_spd_registers(&cpu[0]);
+#endif
+#if 0
+	dump_smbus_registers();
+#endif
+
+	memreset_setup();
+	sdram_initialize(sizeof(cpu)/sizeof(cpu[0]), cpu);
+
+#if 0
+	dump_pci_devices();
+#endif
+
+#if 1
+        {
+        	/* Check value of esp to verify if we have enough rom for stack in Cache as RAM */
+	        unsigned v_esp;
+	        __asm__ volatile (
+        	        "movl   %%esp, %0\n\t"
+	                : "=a" (v_esp)
+	        );
+#if CONFIG_USE_INIT
+	        printk_debug("v_esp=%08x\r\n", v_esp);
+#else
+	        print_debug("v_esp="); print_debug_hex32(v_esp); print_debug("\r\n");
+#endif
+        }
+
+#endif
+
+cpu_reset_x:
+
+#if CONFIG_USE_INIT
+        printk_debug("cpu_reset = %08x\r\n",cpu_reset);
+#else
+        print_debug("cpu_reset = "); print_debug_hex32(cpu_reset); print_debug("\r\n");
+#endif
+
+	if(cpu_reset == 0) {
+	        print_debug("Clearing initial memory region: ");
+	}
+	print_debug("No cache as ram now - ");
+
+	/* store cpu_reset to ebx */
+        __asm__ volatile (
+                "movl %0, %%ebx\n\t"
+                ::"a" (cpu_reset)
+        );
+
+	if(cpu_reset==0) {
+#define CLEAR_FIRST_1M_RAM 1
+#include "cpu/amd/car/cache_as_ram_post.c"
+	}
+	else {
+#undef CLEAR_FIRST_1M_RAM 
+#include "cpu/amd/car/cache_as_ram_post.c"
+	}
+
+	__asm__ volatile (
+                /* set new esp */ /* before _RAMBASE */
+                "movl   %0, %%ebp\n\t"
+                "movl   %0, %%esp\n\t"
+                ::"a"( _RAMBASE - 4 )
+	);
+
+	{
+		unsigned new_cpu_reset;
+
+		/* get back cpu_reset from ebx */
+		__asm__ volatile (
+			"movl %%ebx, %0\n\t"
+			:"=a" (new_cpu_reset)
+		);
+
+		/* We can not go back any more, we lost old stack data in cache as ram*/
+		if(new_cpu_reset==0) {        
+		        print_debug("Use Ram as Stack now - done\r\n");	
+		} else 
+		{	
+			print_debug("Use Ram as Stack now - \r\n");
+		}
+#if CONFIG_USE_INIT
+                printk_debug("new_cpu_reset = %08x\r\n", new_cpu_reset);
+#else
+                print_debug("new_cpu_reset = "); print_debug_hex32(new_cpu_reset); print_debug("\r\n");
+#endif
+	
+		/*copy and execute linuxbios_ram */
+		copy_and_run(new_cpu_reset);
+		/* We will not return */
+	}
+
+
+	print_debug("should not be here -\r\n");
+
+}
diff --git a/src/mainboard/tyan/s2895/Config.lb b/src/mainboard/tyan/s2895/Config.lb
index 09448facc8..3bf8508369 100644
--- a/src/mainboard/tyan/s2895/Config.lb
+++ b/src/mainboard/tyan/s2895/Config.lb
@@ -44,27 +44,46 @@ driver mainboard.o
 if HAVE_MP_TABLE object mptable.o end
 if HAVE_PIRQ_TABLE object irq_tables.o end
 #object reset.o
+if USE_DCACHE_RAM
 
-##
-## Romcc output
-##
-makerule ./failover.E
-        depends "$(MAINBOARD)/failover.c ./romcc"
-        action "./romcc -E -O --label-prefix=failover -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/failover.c -o $@"
-end
+	if CONFIG_USE_INIT	
+		makerule ./auto.o
+		        depends "$(MAINBOARD)/cache_as_ram_auto.c option_table.h"
+        		action "$(CC) -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/cache_as_ram_auto.c -Os -nostdinc -nostdlib -fno-builtin -Wall -c -o auto.o"
+		end
+	else
+		makerule ./auto.inc
+        		depends "$(MAINBOARD)/cache_as_ram_auto.c option_table.h"
+		        action "$(CC) -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/cache_as_ram_auto.c -Os -nostdinc -nostdlib -fno-builtin -Wall -c -S -o $@"
+		        action "perl -e 's/.rodata/.rom.data/g' -pi $@"
+        		action "perl -e 's/.text/.section .rom.text/g' -pi $@"
+		end
+	end
 
-makerule ./failover.inc
-        depends "$(MAINBOARD)/failover.c ./romcc"
-        action "./romcc    -O --label-prefix=failover -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/failover.c -o $@"
-end
+else
+	##
+	## Romcc output
+	##
+	makerule ./failover.E
+        	depends "$(MAINBOARD)/failover.c ./romcc"
+	        action "./romcc -E -O --label-prefix=failover -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/failover.c -o $@"
+	end
+
+	makerule ./failover.inc
+        	depends "$(MAINBOARD)/failover.c ./romcc"
+	        action "./romcc    -O --label-prefix=failover -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/failover.c -o $@"
+	end
+
+	makerule ./auto.E
+        	depends "$(MAINBOARD)/auto.c option_table.h ./romcc"
+	        action  "./romcc -E -mcpu=k8 -O2 -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@"
+	end
+
+	makerule ./auto.inc
+        	depends "$(MAINBOARD)/auto.c option_table.h ./romcc"
+	        action  "./romcc    -mcpu=k8 -O2 -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@"
+	end
 
-makerule ./auto.E
-        depends "$(MAINBOARD)/auto.c option_table.h ./romcc"
-        action  "./romcc -E -mcpu=k8 -O2 -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@"
-end
-makerule ./auto.inc
-        depends "$(MAINBOARD)/auto.c option_table.h ./romcc"
-        action  "./romcc    -mcpu=k8 -O2 -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@"
 end
 
 ##
@@ -73,7 +92,16 @@ end
 mainboardinit cpu/x86/16bit/entry16.inc
 mainboardinit cpu/x86/32bit/entry32.inc
 ldscript /cpu/x86/16bit/entry16.lds
-ldscript /cpu/x86/32bit/entry32.lds
+if USE_DCACHE_RAM
+        if CONFIG_USE_INIT
+                ldscript /cpu/x86/32bit/entry32.lds
+        end
+
+        if CONFIG_USE_INIT
+                ldscript /cpu/amd/car/cache_as_ram.lds
+        end
+end
+
 
 ##
 ## Build our reset vector (This is where linuxBIOS is entered)
@@ -86,8 +114,11 @@ else
 	ldscript /cpu/x86/32bit/reset32.lds 
 end
 
-### Should this be in the northbridge code?
-mainboardinit arch/i386/lib/cpu_reset.inc
+if USE_DCACHE_RAM
+else
+	### Should this be in the northbridge code?
+	mainboardinit arch/i386/lib/cpu_reset.inc
+end
 
 ##
 ## Include an id string (For safe flashing)
@@ -103,29 +134,49 @@ if USE_FALLBACK_IMAGE
 	ldscript /southbridge/nvidia/ck804/romstrap.lds
 end
 
+
+
+if USE_DCACHE_RAM
+	##
+	## Setup Cache-As-Ram
+	##
+	mainboardinit cpu/amd/car/cache_as_ram.inc
+end
+
 ###
 ### This is the early phase of linuxBIOS startup 
 ### Things are delicate and we test to see if we should
 ### failover to another image.
 ###
 if USE_FALLBACK_IMAGE
-	ldscript /arch/i386/lib/failover.lds 
-	mainboardinit ./failover.inc
+	ldscript /arch/i386/lib/failover.lds
+	if USE_DCACHE_RAM
+	else
+	        mainboardinit ./failover.inc
+	end
 end
 
-###
-### O.k. We aren't just an intermediary anymore!
-###
-
 ##
 ## Setup RAM
 ##
-mainboardinit cpu/x86/fpu/enable_fpu.inc
-mainboardinit cpu/x86/mmx/enable_mmx.inc
-mainboardinit cpu/x86/sse/enable_sse.inc
-mainboardinit ./auto.inc
-mainboardinit cpu/x86/sse/disable_sse.inc
-mainboardinit cpu/x86/mmx/disable_mmx.inc
+if USE_DCACHE_RAM
+
+	if CONFIG_USE_INIT
+		initobject auto.o
+	else
+		mainboardinit ./auto.inc
+	end
+
+else
+	# ROMCC
+	mainboardinit cpu/x86/fpu/enable_fpu.inc
+	mainboardinit cpu/x86/mmx/enable_mmx.inc
+	mainboardinit cpu/x86/sse/enable_sse.inc
+	mainboardinit ./auto.inc
+	mainboardinit cpu/x86/sse/disable_sse.inc
+	mainboardinit cpu/x86/mmx/disable_mmx.inc
+
+end
 
 ##
 ## Include the secondary Configuration files 
diff --git a/src/mainboard/tyan/s2895/Options.lb b/src/mainboard/tyan/s2895/Options.lb
index 22812e9a20..e2d220201b 100644
--- a/src/mainboard/tyan/s2895/Options.lb
+++ b/src/mainboard/tyan/s2895/Options.lb
@@ -59,6 +59,11 @@ uses K8_E0_MEM_HOLE_SIZEK
 
 uses CK804_DEVN_BASE
 
+uses USE_DCACHE_RAM
+uses DCACHE_RAM_BASE
+uses DCACHE_RAM_SIZE
+uses CONFIG_USE_INIT
+
 ## ROM_SIZE is the size of boot ROM that this board will use.
 #512K bytes 
 default ROM_SIZE=524288
@@ -85,9 +90,9 @@ default HAVE_FALLBACK_BOOT=1
 ##
 default HAVE_HARD_RESET=1
 
-default HARD_RESET_BUS=1
-default HARD_RESET_DEVICE=4
-default HARD_RESET_FUNCTION=0
+#default HARD_RESET_BUS=1
+#default HARD_RESET_DEVICE=4
+#default HARD_RESET_FUNCTION=0
 
 ##
 ## Build code to export a programmable irq routing table
@@ -136,6 +141,14 @@ default CONFIG_CONSOLE_VGA=1
 default CONFIG_PCI_ROM_RUN=1
 
 ##
+## enable CACHE_AS_RAM specifics
+##
+default USE_DCACHE_RAM=1
+default DCACHE_RAM_BASE=0xcf000
+default DCACHE_RAM_SIZE=0x1000
+default CONFIG_USE_INIT=1
+
+##
 ## Build code to setup a generic IOAPIC
 ##
 default CONFIG_IOAPIC=1
@@ -143,8 +156,8 @@ default CONFIG_IOAPIC=1
 ##
 ## Clean up the motherboard id strings
 ##
-default MAINBOARD_PART_NUMBER="Tyan"
-default MAINBOARD_VENDOR="s2895"
+default MAINBOARD_PART_NUMBER="s2895"
+default MAINBOARD_VENDOR="Tyan"
 default MAINBOARD_PCI_SUBSYSTEM_VENDOR_ID=0x10f1
 default MAINBOARD_PCI_SUBSYSTEM_DEVICE_ID=0x2895
 
@@ -233,7 +246,7 @@ default TTYS0_LCS=0x3
 ## SPEW       9   Way too many details             
 
 ## Request this level of debugging output
-default  DEFAULT_CONSOLE_LOGLEVEL=7
+default  DEFAULT_CONSOLE_LOGLEVEL=8
 ## At a maximum only compile in this level of debugging
 default  MAXIMUM_CONSOLE_LOGLEVEL=8
 
diff --git a/src/mainboard/tyan/s2895/cache_as_ram_auto.c b/src/mainboard/tyan/s2895/cache_as_ram_auto.c
new file mode 100644
index 0000000000..dfe11ae546
--- /dev/null
+++ b/src/mainboard/tyan/s2895/cache_as_ram_auto.c
@@ -0,0 +1,492 @@
+#define ASSEMBLY 1
+#define __ROMCC__
+ 
+#include <stdint.h>
+#include <device/pci_def.h>
+#include <arch/io.h>
+#include <device/pnp_def.h>
+#include <arch/romcc_io.h>
+#include <cpu/x86/lapic.h>
+#include "option_table.h"
+#include "pc80/mc146818rtc_early.c"
+#include "pc80/serial.c"
+#include "arch/i386/lib/console.c"
+#include "ram/ramtest.c"
+
+
+#include "northbridge/amd/amdk8/cpu_rev.c"
+#define K8_HT_FREQ_1G_SUPPORT 0
+#include "northbridge/amd/amdk8/incoherent_ht.c"
+#include "southbridge/nvidia/ck804/ck804_early_smbus.c"
+#include "northbridge/amd/amdk8/raminit.h"
+#include "cpu/amd/model_fxx/apic_timer.c"
+#include "lib/delay.c"
+
+#if CONFIG_USE_INIT == 0
+#include "lib/memcpy.c"
+#endif
+
+#include "cpu/x86/lapic/boot_cpu.c"
+#include "northbridge/amd/amdk8/reset_test.c"
+#include "northbridge/amd/amdk8/debug.c"
+#include "superio/smsc/lpc47b397/lpc47b397_early_serial.c"
+
+#include "cpu/amd/mtrr/amd_earlymtrr.c"
+#include "cpu/x86/bist.h"
+
+#include "superio/smsc/lpc47b397/lpc47b397_early_gpio.c"
+
+#include "northbridge/amd/amdk8/setup_resource_map.c"
+
+#define SERIAL_DEV PNP_DEV(0x2e, LPC47B397_SP1)
+
+static void hard_reset(void)
+{
+        set_bios_reset();
+
+        /* full reset */
+	outb(0x0a, 0x0cf9);
+        outb(0x0e, 0x0cf9);
+}
+
+static void soft_reset(void)
+{
+        set_bios_reset();
+#if 1
+        /* link reset */
+	outb(0x02, 0x0cf9);
+        outb(0x06, 0x0cf9);
+#endif
+}
+
+static void memreset_setup(void)
+{
+}
+
+static void memreset(int controllers, const struct mem_controller *ctrl)
+{
+}
+
+#define SUPERIO_GPIO_DEV PNP_DEV(0x2e, LPC47B397_RT)
+
+#define SUPERIO_GPIO_IO_BASE 0x400
+
+static void sio_gpio_setup(void){
+
+        unsigned value;
+
+
+#if 1
+        /*Enable onboard scsi*/
+        lpc47b397_gpio_offset_out(SUPERIO_GPIO_IO_BASE, 0x2c, (1<<7)|(0<<2)|(0<<1)|(0<<0)); // GP21, offset 0x2c, DISABLE_SCSI_L 
+        value = lpc47b397_gpio_offset_in(SUPERIO_GPIO_IO_BASE, 0x4c);
+        lpc47b397_gpio_offset_out(SUPERIO_GPIO_IO_BASE, 0x4c, (value|(1<<1)));
+#endif
+
+}
+
+static inline void activate_spd_rom(const struct mem_controller *ctrl)
+{
+	/* nothing to do */
+}
+
+static inline int spd_read_byte(unsigned device, unsigned address)
+{
+	return smbus_read_byte(device, address);
+}
+
+#define K8_4RANK_DIMM_SUPPORT 1
+
+#include "northbridge/amd/amdk8/raminit.c"
+#if 0
+        #define ENABLE_APIC_EXT_ID 1
+        #define APIC_ID_OFFSET 0x10
+        #define LIFT_BSP_APIC_ID 0
+#else
+        #define ENABLE_APIC_EXT_ID 0
+#endif
+#include "northbridge/amd/amdk8/coherent_ht.c"
+#include "sdram/generic_sdram.c"
+
+ /* tyan does not want the default */
+#include "resourcemap.c" 
+
+#if CONFIG_LOGICAL_CPUS==1
+#define SET_NB_CFG_54 1
+#include "cpu/amd/dualcore/dualcore.c"
+#endif
+
+#define FIRST_CPU  1
+#define SECOND_CPU 1
+#define TOTAL_CPUS (FIRST_CPU + SECOND_CPU)
+
+#define CK804_NUM 2
+//#define CK804B_BUSN 0x80
+#define CK804B_BUSN 0xc
+#define CK804_USE_NIC 1
+#define CK804_USE_ACI 1
+
+#include "southbridge/nvidia/ck804/ck804_early_setup_ss.h"
+
+//set GPIO to input mode
+#define CK804_MB_SETUP \
+                RES_PORT_IO_8, SYSCTRL_IO_BASE + 0xc0+ 5, ~(0xff),((0<<4)|(0<<2)|(0<<0)),/* M9,GPIO6, PCIXB2_PRSNT1_L*/  \
+                RES_PORT_IO_8, SYSCTRL_IO_BASE + 0xc0+15, ~(0xff),((0<<4)|(0<<2)|(0<<0)),/* M8,GPIO16, PCIXB2_PRSNT2_L*/ \
+                RES_PORT_IO_8, SYSCTRL_IO_BASE + 0xc0+44, ~(0xff),((0<<4)|(0<<2)|(0<<0)),/* P5,GPIO45, PCIXA_PRSNT1_L*/  \
+                RES_PORT_IO_8, SYSCTRL_IO_BASE + 0xc0+ 7, ~(0xff),((0<<4)|(0<<2)|(0<<0)),/* M5,GPIO8, PCIXA_PRSNT2_L*/   \
+                RES_PORT_IO_8, SYSCTRL_IO_BASE + 0xc0+16, ~(0xff),((0<<4)|(0<<2)|(0<<0)),/* K4,GPIO17, PCIXB_PRSNT1_L*/  \
+                RES_PORT_IO_8, SYSCTRL_IO_BASE + 0xc0+45, ~(0xff),((0<<4)|(0<<2)|(0<<0)),/* P7,GPIO46, PCIXB_PRSNT2_L*/
+
+#include "southbridge/nvidia/ck804/ck804_early_setup.c"
+
+#include "cpu/amd/car/copy_and_run.c"
+
+#if USE_FALLBACK_IMAGE == 1
+
+#include "southbridge/nvidia/ck804/ck804_enable_rom.c"
+#include "northbridge/amd/amdk8/early_ht.c"
+
+
+static void sio_setup(void)
+{
+
+        unsigned value;
+        uint32_t dword;
+        uint8_t byte;
+
+        
+        pci_write_config32(PCI_DEV(0, CK804_DEVN_BASE+1, 0), 0xac, 0x047f0400);
+        
+        byte = pci_read_config32(PCI_DEV(0, CK804_DEVN_BASE+1 , 0), 0x7b);
+        byte |= 0x20; 
+        pci_write_config8(PCI_DEV(0, CK804_DEVN_BASE+1 , 0), 0x7b, byte);
+        
+        dword = pci_read_config32(PCI_DEV(0, CK804_DEVN_BASE+1 , 0), 0xa0);
+        dword |= (1<<29)|(1<<0);
+        pci_write_config32(PCI_DEV(0, CK804_DEVN_BASE+1 , 0), 0xa0, dword);
+        
+#if  1  
+        lpc47b397_enable_serial(SUPERIO_GPIO_DEV, SUPERIO_GPIO_IO_BASE);
+                
+        value =  lpc47b397_gpio_offset_in(SUPERIO_GPIO_IO_BASE, 0x77);
+        value &= 0xbf; 
+        lpc47b397_gpio_offset_out(SUPERIO_GPIO_IO_BASE, 0x77, value);
+#endif
+
+}
+
+void real_main(unsigned long bist);
+
+void amd64_main(unsigned long bist)
+{
+#if CONFIG_LOGICAL_CPUS==1
+        struct node_core_id id;
+#else
+        unsigned nodeid;
+#endif
+        /* Make cerain my local apic is useable */
+//        enable_lapic();
+        
+#if CONFIG_LOGICAL_CPUS==1
+        id = get_node_core_id_x();
+        /* Is this a cpu only reset? */
+        if (cpu_init_detected(id.nodeid)) {
+#else   
+//        nodeid = lapicid() & 0xf;
+        nodeid = get_node_id();
+        /* Is this a cpu only reset? */
+        if (cpu_init_detected(nodeid)) {
+#endif
+                if (last_boot_normal()) {
+                        goto normal_image;
+                } else {
+                        goto cpu_reset;
+                }
+        }
+
+        /* Is this a secondary cpu? */
+        if (!boot_cpu()) {
+                if (last_boot_normal()) {
+                        goto normal_image;
+                } else {
+                        goto fallback_image;
+                }
+        }
+
+        /* Nothing special needs to be done to find bus 0 */
+        /* Allow the HT devices to be found */
+
+        enumerate_ht_chain();
+
+        sio_setup();
+
+        /* Setup the ck804 */
+        ck804_enable_rom();
+
+        /* Is this a deliberate reset by the bios */
+        if (bios_reset_detected() && last_boot_normal()) {
+                goto normal_image;
+        }
+        /* This is the primary cpu how should I boot? */
+        else if (do_normal_boot()) {
+                goto normal_image;
+        }
+        else {
+                goto fallback_image;
+        }
+ normal_image:
+        __asm__ volatile ("jmp __normal_image"
+                : /* outputs */
+                : "a" (bist) /* inputs */
+                );
+ cpu_reset:
+#if 0
+        //CPU reset will reset memtroller ???
+        asm volatile ("jmp __cpu_reset" 
+                : /* outputs */ 
+                : "a"(bist) /* inputs */
+                );
+#endif
+
+ fallback_image:
+        real_main(bist);
+}
+void real_main(unsigned long bist)
+#else
+void amd64_main(unsigned long bist)
+#endif
+{
+	static const struct mem_controller cpu[] = {
+#if FIRST_CPU
+		{
+			.node_id = 0,
+			.f0 = PCI_DEV(0, 0x18, 0),
+			.f1 = PCI_DEV(0, 0x18, 1),
+			.f2 = PCI_DEV(0, 0x18, 2),
+			.f3 = PCI_DEV(0, 0x18, 3),
+			.channel0 = { (0xa<<3)|0, (0xa<<3)|2, 0, 0 },
+			.channel1 = { (0xa<<3)|1, (0xa<<3)|3, 0, 0 },
+		},
+#endif
+#if SECOND_CPU
+		{
+			.node_id = 1,
+			.f0 = PCI_DEV(0, 0x19, 0),
+			.f1 = PCI_DEV(0, 0x19, 1),
+			.f2 = PCI_DEV(0, 0x19, 2),
+			.f3 = PCI_DEV(0, 0x19, 3),
+			.channel0 = { (0xa<<3)|4, (0xa<<3)|6, 0, 0 },
+			.channel1 = { (0xa<<3)|5, (0xa<<3)|7, 0, 0 },
+		},
+#endif
+	};
+
+        int needs_reset;
+
+	unsigned cpu_reset = 0;
+
+        if (bist == 0) {
+#if CONFIG_LOGICAL_CPUS==1
+        	struct node_core_id id;
+#else
+	        unsigned nodeid;
+#endif
+                /* Skip this if there was a built in self test failure */
+//                amd_early_mtrr_init(); # don't need, already done in cache_as_ram
+
+#if CONFIG_LOGICAL_CPUS==1
+                set_apicid_cpuid_lo();
+                id = get_node_core_id_x(); // that is initid
+        #if ENABLE_APIC_EXT_ID == 1
+                if(id.coreid == 0) {
+                        enable_apic_ext_id(id.nodeid);
+                }
+        #endif
+#else
+                nodeid = get_node_id();
+        #if ENABLE_APIC_EXT_ID == 1
+                enable_apic_ext_id(nodeid);
+        #endif
+#endif
+
+		enable_lapic();
+
+                init_timer();
+
+
+#if CONFIG_LOGICAL_CPUS==1
+        #if ENABLE_APIC_EXT_ID == 1
+            #if LIFT_BSP_APIC_ID == 0
+                if( id.nodeid != 0 ) //all except cores in node0
+            #endif
+                        lapic_write(LAPIC_ID, ( lapic_read(LAPIC_ID) | (APIC_ID_OFFSET<<24) ) );
+        #endif
+                if(id.coreid == 0) {
+                        if (cpu_init_detected(id.nodeid)) {
+                                cpu_reset = 1;
+                                goto cpu_reset_x;
+                        }
+                        distinguish_cpu_resets(id.nodeid);
+                }
+#else
+        #if ENABLE_APIC_EXT_ID == 1
+            #if LIFT_BSP_APIC_ID == 0
+                if(nodeid != 0)
+            #endif
+                        lapic_write(LAPIC_ID, ( lapic_read(LAPIC_ID) | (APIC_ID_OFFSET<<24) ) ); // CPU apicid is from 0x10
+
+        #endif
+                if (cpu_init_detected(nodeid)) {
+                                cpu_reset = 1;
+                                goto cpu_reset_x;
+                }
+                distinguish_cpu_resets(nodeid);
+#endif
+
+
+                if (!boot_cpu()
+#if CONFIG_LOGICAL_CPUS==1 
+                        || (id.coreid != 0)
+#endif
+                ) {
+			// We need stop the CACHE as RAM for this CPU too
+			#include "cpu/amd/car/cache_as_ram_post.c"
+                        stop_this_cpu(); // it will stop all cores except core0 of cpu0
+                }
+        }
+
+
+	lpc47b397_enable_serial(SERIAL_DEV, TTYS0_BASE);
+        uart_init();
+        console_init();
+	
+	/* Halt if there was a built in self test failure */
+	report_bist_failure(bist);
+
+        setup_s2895_resource_map();
+#if 0
+        dump_pci_device(PCI_DEV(0, 0x18, 0));
+	dump_pci_device(PCI_DEV(0, 0x19, 0));
+#endif
+
+	needs_reset = setup_coherent_ht_domain();
+
+#if CONFIG_LOGICAL_CPUS==1
+        // It is said that we should start core1 after all core0 launched
+        start_other_cores();
+#endif
+
+#if CK804B_BUSN == 0x80 
+        // You need to preset bus num in PCI_DEV(0, 0x18,1) 0xe0, 0xe4, 0xe8, 0xec
+        needs_reset |= ht_setup_chains(3);
+#else
+        // automatically set that for you, but you might meet tight space
+        // Bcause it has two Ck804, we need to set CK804B_BUSN to 0xc (ht_setup_chains_x will let second CK804 use that bus num.    
+    // otherwise ck804_eary_setup can not work rightly.
+        needs_reset |= ht_setup_chains_x();
+#endif
+
+        needs_reset |= ck804_early_setup_x();
+
+       	if (needs_reset) {
+               	print_info("ht reset -\r\n");
+               	soft_reset();
+       	}
+
+	enable_smbus();
+#if 0
+	dump_spd_registers(&cpu[0]);
+#endif
+#if 0
+	dump_smbus_registers();
+#endif
+
+	memreset_setup();
+	sdram_initialize(sizeof(cpu)/sizeof(cpu[0]), cpu);
+
+#if 0
+	dump_pci_devices();
+#endif
+
+#if 1
+	{	
+	/* Check value of esp to verify if we have enough rom for stack in Cache as RAM */
+	unsigned v_esp;
+        __asm__ volatile (
+	        "movl	%%esp, %0\n\t"
+                : "=a" (v_esp)
+        );
+#if CONFIG_USE_INIT
+	printk_debug("v_esp=%08x\r\n", v_esp); 
+#else
+	print_debug("v_esp="); print_debug_hex32(v_esp); print_debug("\r\n");
+#endif
+	}
+
+#endif
+
+cpu_reset_x:    
+
+#if CONFIG_USE_INIT
+	printk_debug("cpu_reset = %08x\r\n",cpu_reset);
+#else
+	print_debug("cpu_reset = "); print_debug_hex32(cpu_reset); print_debug("\r\n");
+#endif
+
+        if(cpu_reset == 0) {
+                print_debug("Clearing initial memory region: ");
+        }       
+        print_debug("No cache as ram now - ");
+        
+        /* store cpu_reset to ebx */
+        __asm__ volatile (
+                "movl %0, %%ebx\n\t"
+                ::"a" (cpu_reset)
+        );      
+
+        if(cpu_reset==0) {
+#define CLEAR_FIRST_1M_RAM 1
+#include "cpu/amd/car/cache_as_ram_post.c"
+        }
+        else {
+#undef CLEAR_FIRST_1M_RAM 
+#include "cpu/amd/car/cache_as_ram_post.c"
+        }
+
+        __asm__ volatile (
+                /* set new esp */ /* before _RAMBASE */
+                "movl   %0, %%ebp\n\t"
+                "movl   %0, %%esp\n\t"
+		::"a"( _RAMBASE - 4 )
+        );
+
+        {
+                unsigned new_cpu_reset;
+
+                /* get back cpu_reset from ebx */
+                __asm__ volatile (
+                        "movl %%ebx, %0\n\t"
+                        :"=a" (new_cpu_reset)
+                );
+
+                /* We can not go back any more, we lost old stack data in cache as ram*/
+                if(new_cpu_reset==0) {
+                        print_debug("Use Ram as Stack now - done\r\n");
+                } else
+                {  
+                        print_debug("Use Ram as Stack now - \r\n");
+                }
+#if CONFIG_USE_INIT
+		printk_debug("new_cpu_reset = %08x\r\n", new_cpu_reset);
+#else
+                print_debug("new_cpu_reset = "); print_debug_hex32(new_cpu_reset); print_debug("\r\n");
+#endif
+
+                /*copy and execute linuxbios_ram */
+                copy_and_run(new_cpu_reset);
+                /* We will not return */
+        }
+
+
+        print_err("should not be here -\r\n");
+}
diff --git a/src/mainboard/tyan/s4880/Options.lb b/src/mainboard/tyan/s4880/Options.lb
index 4cadb725c4..42284e422d 100644
--- a/src/mainboard/tyan/s4880/Options.lb
+++ b/src/mainboard/tyan/s4880/Options.lb
@@ -11,6 +11,7 @@ uses HAVE_OPTION_TABLE
 uses CONFIG_MAX_CPUS
 uses CONFIG_MAX_PHYSICAL_CPUS
 uses CONFIG_LOGICAL_CPUS
+uses SERIAL_CPU_INIT
 uses CONFIG_IOAPIC
 uses CONFIG_SMP
 uses FALLBACK_SIZE
@@ -56,6 +57,8 @@ uses CONFIG_CONSOLE_VGA
 uses CONFIG_PCI_ROM_RUN
 uses K8_E0_MEM_HOLE_SIZEK
 
+uses CONFIG_USE_INIT
+
 ###
 ### Build options
 ###
@@ -120,6 +123,9 @@ default CONFIG_MAX_CPUS=4
 default CONFIG_MAX_PHYSICAL_CPUS=4
 default CONFIG_LOGICAL_CPUS=0
 
+
+#default SERIAL_CPU_INIT=0
+
 #1G memory hole
 default K8_E0_MEM_HOLE_SIZEK=0x100000
 
@@ -135,8 +141,8 @@ default CONFIG_IOAPIC=1
 ##
 ## Clean up the motherboard id strings
 ##
-default MAINBOARD_PART_NUMBER="Tyan"
-default MAINBOARD_VENDOR="s4880"
+default MAINBOARD_PART_NUMBER="s4880"
+default MAINBOARD_VENDOR="Tyan"
 default MAINBOARD_PCI_SUBSYSTEM_VENDOR_ID=0x10f1
 default MAINBOARD_PCI_SUBSYSTEM_DEVICE_ID=0x4880
 
diff --git a/src/mainboard/tyan/s4882/Config.lb b/src/mainboard/tyan/s4882/Config.lb
index 67ee157f6e..95ef0464fe 100644
--- a/src/mainboard/tyan/s4882/Config.lb
+++ b/src/mainboard/tyan/s4882/Config.lb
@@ -16,6 +16,7 @@ end
 ##
 default PAYLOAD_SIZE            = ( ROM_SECTION_SIZE - ROM_IMAGE_SIZE )
 default CONFIG_ROM_STREAM_START = (0xffffffff - ROM_SIZE + ROM_SECTION_OFFSET + 1)
+default CONFIG_ROM_STREAM     = 1
 
 ##
 ## Compute where this copy of linuxBIOS will start in the boot rom
@@ -34,6 +35,7 @@ default XIP_ROM_BASE = ( _ROMBASE + ROM_IMAGE_SIZE - XIP_ROM_SIZE )
 
 arch i386 end 
 
+
 ##
 ## Build the objects we have code for in this directory.
 ##
@@ -42,39 +44,61 @@ driver mainboard.o
 if HAVE_MP_TABLE object mptable.o end
 if HAVE_PIRQ_TABLE object irq_tables.o end
 #object reset.o
+if USE_DCACHE_RAM
 
-##
-## Romcc output
-##
-makerule ./failover.E
-        depends "$(MAINBOARD)/failover.c ./romcc"
-        action "./romcc -E -O --label-prefix=failover -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/failover.c -o $@"
-end
+	if CONFIG_USE_INIT
 
-makerule ./failover.inc
-        depends "$(MAINBOARD)/failover.c ./romcc"
-        action "./romcc    -O --label-prefix=failover -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/failover.c -o $@"
-end
+		makerule ./auto.o
+        		depends "$(MAINBOARD)/cache_as_ram_auto.c option_table.h"
+	        	action "$(CC) -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/cache_as_ram_auto.c -Os -nostdinc -nostdlib -fno-builtin -Wall -c -o auto.o"
+		end
 
-makerule ./auto.E
-        depends "$(MAINBOARD)/auto.c option_table.h ./romcc"
-        action  "./romcc -E -mcpu=k8 -O2 -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@"
-end
-makerule ./auto.inc
-        depends "$(MAINBOARD)/auto.c option_table.h ./romcc"
-        action  "./romcc    -mcpu=k8 -O2 -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@"
-end
+	else
 
-##
-## Setup RAM
-##
-mainboardinit cpu/x86/fpu/enable_fpu.inc
-mainboardinit cpu/x86/mmx/enable_mmx.inc
-mainboardinit cpu/x86/sse/enable_sse.inc
-mainboardinit ./auto.inc
-mainboardinit cpu/x86/sse/disable_sse.inc
-mainboardinit cpu/x86/mmx/disable_mmx.inc
-mainboardinit arch/i386/lib/jmp_auto_out.inc
+		makerule ./auto.inc
+        		depends "$(MAINBOARD)/cache_as_ram_auto.c option_table.h"
+		        action "$(CC) -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/cache_as_ram_auto.c -Os -nostdinc -nostdlib -fno-builtin -Wall -c -S -o $@"
+        		action "perl -e 's/.rodata/.rom.data/g' -pi $@"
+		        action "perl -e 's/.text/.section .rom.text/g' -pi $@"
+			end
+	end
+else
+
+	##
+	## Romcc output
+	##
+	makerule ./failover.E
+        	depends "$(MAINBOARD)/failover.c ./romcc"
+	        action "./romcc -E -O --label-prefix=failover -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/failover.c -o $@"
+	end
+
+	makerule ./failover.inc
+	        depends "$(MAINBOARD)/failover.c ./romcc"
+        	action "./romcc    -O --label-prefix=failover -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/failover.c -o $@"
+	end
+
+	makerule ./auto.E
+        	depends "$(MAINBOARD)/auto.c option_table.h ./romcc"
+	        action  "./romcc -E -mcpu=k8 -O2 -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@"
+	end
+
+	makerule ./auto.inc
+        	depends "$(MAINBOARD)/auto.c option_table.h ./romcc"
+	        action  "./romcc    -mcpu=k8 -O2 -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@"
+	end
+
+	##
+	## Setup RAM
+	##
+	mainboardinit cpu/x86/fpu/enable_fpu.inc
+	mainboardinit cpu/x86/mmx/enable_mmx.inc
+	mainboardinit cpu/x86/sse/enable_sse.inc
+	mainboardinit ./auto.inc
+	mainboardinit cpu/x86/sse/disable_sse.inc
+	mainboardinit cpu/x86/mmx/disable_mmx.inc
+	mainboardinit arch/i386/lib/jmp_auto_out.inc
+
+end
 
 ##
 ## Build our 16 bit and 32 bit linuxBIOS entry code
@@ -82,7 +106,16 @@ mainboardinit arch/i386/lib/jmp_auto_out.inc
 mainboardinit cpu/x86/16bit/entry16.inc
 mainboardinit cpu/x86/32bit/entry32.inc
 ldscript /cpu/x86/16bit/entry16.lds
-ldscript /cpu/x86/32bit/entry32.lds
+if USE_DCACHE_RAM
+        if CONFIG_USE_INIT
+                ldscript /cpu/x86/32bit/entry32.lds
+        end
+
+        if CONFIG_USE_INIT
+                ldscript /cpu/amd/car/cache_as_ram.lds
+        end
+end
+
 
 ##
 ## Build our reset vector (This is where linuxBIOS is entered)
@@ -95,8 +128,11 @@ else
 	ldscript /cpu/x86/32bit/reset32.lds 
 end
 
-### Should this be in the northbridge code?
-mainboardinit arch/i386/lib/cpu_reset.inc
+if USE_DCACHE_RAM
+else
+	### Should this be in the northbridge code?
+	mainboardinit arch/i386/lib/cpu_reset.inc
+end
 
 ##
 ## Include an id string (For safe flashing)
@@ -104,27 +140,51 @@ mainboardinit arch/i386/lib/cpu_reset.inc
 mainboardinit arch/i386/lib/id.inc
 ldscript /arch/i386/lib/id.lds
 
+
+if USE_DCACHE_RAM
+	##
+	## Setup Cache-As-Ram
+	##
+	mainboardinit cpu/amd/car/cache_as_ram.inc
+end
+
 ###
 ### This is the early phase of linuxBIOS startup 
 ### Things are delicate and we test to see if we should
 ### failover to another image.
 ###
 if USE_FALLBACK_IMAGE
-	ldscript /arch/i386/lib/failover.lds 
-	mainboardinit ./failover.inc
+	if USE_DCACHE_RAM
+		ldscript /arch/i386/lib/failover.lds
+	else
+       		ldscript /arch/i386/lib/failover.lds
+	        mainboardinit ./failover.inc
+	end
 end
 
-###
-### O.k. We aren't just an intermediary anymore!
-###
+##
+## Setup RAM
+##
+if USE_DCACHE_RAM
+
+	if CONFIG_USE_INIT
+		initobject auto.o
+	else
+		mainboardinit ./auto.inc
+	end
 
-mainboardinit arch/i386/lib/jmp_auto.inc
+else
+
+	# ROMCC
+	mainboardinit arch/i386/lib/jmp_auto.inc
+
+end
 
 ##
 ## Include the secondary Configuration files 
 ##
 if CONFIG_CHIP_NAME
-        config chip.h
+	config chip.h
 end
 
 # sample config for tyan/s4882
diff --git a/src/mainboard/tyan/s4882/Options.lb b/src/mainboard/tyan/s4882/Options.lb
index e1a431bde3..56a2548228 100644
--- a/src/mainboard/tyan/s4882/Options.lb
+++ b/src/mainboard/tyan/s4882/Options.lb
@@ -11,7 +11,6 @@ uses HAVE_OPTION_TABLE
 uses CONFIG_MAX_CPUS
 uses CONFIG_MAX_PHYSICAL_CPUS
 uses CONFIG_LOGICAL_CPUS
-uses SERIAL_CPU_INIT
 uses CONFIG_IOAPIC
 uses CONFIG_SMP
 uses FALLBACK_SIZE
@@ -48,16 +47,21 @@ uses MAINBOARD_POWER_ON_AFTER_POWER_FAIL
 uses CONFIG_CONSOLE_SERIAL8250
 uses HAVE_INIT_TIMER
 uses CONFIG_GDB_STUB
+uses CONFIG_GDB_STUB
 uses CROSS_COMPILE
 uses CC
 uses HOSTCC
 uses OBJCOPY
 uses CONFIG_CHIP_NAME
-uses CONFIG_CONSOLE_BTEXT
 uses CONFIG_CONSOLE_VGA
 uses CONFIG_PCI_ROM_RUN
 uses K8_E0_MEM_HOLE_SIZEK
 
+uses USE_DCACHE_RAM
+uses DCACHE_RAM_BASE
+uses DCACHE_RAM_SIZE
+uses CONFIG_USE_INIT
+
 ###
 ### Build options
 ###
@@ -85,7 +89,7 @@ default HAVE_HARD_RESET=1
 ##
 ## Funky hard reset implementation
 ## 
-default HARD_RESET_BUS=1
+default HARD_RESET_BUS=3
 default HARD_RESET_DEVICE=4
 default HARD_RESET_FUNCTION=0
 
@@ -122,18 +126,25 @@ default CONFIG_MAX_CPUS=8
 default CONFIG_MAX_PHYSICAL_CPUS=4
 default CONFIG_LOGICAL_CPUS=1
 
-#default SERIAL_CPU_INIT=0
+#CHIP_NAME ?
+default CONFIG_CHIP_NAME=1
 
 #1G memory hole
 default K8_E0_MEM_HOLE_SIZEK=0x100000
 
-#BTEXT Console
-#default CONFIG_CONSOLE_BTEXT=1
-
 #VGA Console
 default CONFIG_CONSOLE_VGA=1
 default CONFIG_PCI_ROM_RUN=1
 
+
+##
+## enable CACHE_AS_RAM specifics
+##
+default USE_DCACHE_RAM=1
+default DCACHE_RAM_BASE=0xcf000
+default DCACHE_RAM_SIZE=0x1000
+default CONFIG_USE_INIT=1
+
 ##
 ## Build code to setup a generic IOAPIC
 ##
@@ -142,8 +153,8 @@ default CONFIG_IOAPIC=1
 ##
 ## Clean up the motherboard id strings
 ##
-default MAINBOARD_PART_NUMBER="Tyan"
-default MAINBOARD_VENDOR="s4882"
+default MAINBOARD_PART_NUMBER="s4882"
+default MAINBOARD_VENDOR="Tyan"
 default MAINBOARD_PCI_SUBSYSTEM_VENDOR_ID=0x10f1
 default MAINBOARD_PCI_SUBSYSTEM_DEVICE_ID=0x4882
 
@@ -232,9 +243,9 @@ default TTYS0_LCS=0x3
 ## SPEW       9   Way too many details             
 
 ## Request this level of debugging output
-default  DEFAULT_CONSOLE_LOGLEVEL=7
+default  DEFAULT_CONSOLE_LOGLEVEL=8
 ## At a maximum only compile in this level of debugging
-default  MAXIMUM_CONSOLE_LOGLEVEL=7
+default  MAXIMUM_CONSOLE_LOGLEVEL=8
 
 ##
 ## Select power on after power fail setting
diff --git a/src/mainboard/tyan/s4882/cache_as_ram_auto.c b/src/mainboard/tyan/s4882/cache_as_ram_auto.c
new file mode 100644
index 0000000000..4e1b8483fc
--- /dev/null
+++ b/src/mainboard/tyan/s4882/cache_as_ram_auto.c
@@ -0,0 +1,457 @@
+#define ASSEMBLY 1
+#define __ROMCC__
+ 
+#include <stdint.h>
+#include <device/pci_def.h>
+#include <arch/io.h>
+#include <device/pnp_def.h>
+#include <arch/romcc_io.h>
+#include <cpu/x86/lapic.h>
+#include "option_table.h"
+#include "pc80/mc146818rtc_early.c"
+#include "pc80/serial.c"
+#include "arch/i386/lib/console.c"
+#include "ram/ramtest.c"
+
+#include "northbridge/amd/amdk8/cpu_rev.c"
+#define K8_HT_FREQ_1G_SUPPORT 0
+#include "northbridge/amd/amdk8/incoherent_ht.c"
+#include "southbridge/amd/amd8111/amd8111_early_smbus.c"
+#include "northbridge/amd/amdk8/raminit.h"
+#include "cpu/amd/model_fxx/apic_timer.c"
+#include "lib/delay.c"
+
+#if CONFIG_USE_INIT == 0
+#include "lib/memcpy.c"
+#endif
+
+#include "cpu/x86/lapic/boot_cpu.c"
+#include "northbridge/amd/amdk8/reset_test.c"
+#include "northbridge/amd/amdk8/debug.c"
+#include "superio/winbond/w83627hf/w83627hf_early_serial.c"
+
+#include "cpu/amd/mtrr/amd_earlymtrr.c"
+#include "cpu/x86/bist.h"
+
+#include "northbridge/amd/amdk8/setup_resource_map.c"
+
+#define SERIAL_DEV PNP_DEV(0x2e, W83627HF_SP1)
+
+static void hard_reset(void)
+{
+        set_bios_reset();
+
+        /* enable cf9 */
+        pci_write_config8(PCI_DEV(0, 0x04, 3), 0x41, 0xf1);
+        /* reset */
+        outb(0x0e, 0x0cf9);
+}
+
+static void soft_reset(void)
+{
+        set_bios_reset();
+        pci_write_config8(PCI_DEV(0, 0x04, 0), 0x47, 1);
+}
+
+static void memreset_setup(void)
+{
+   if (is_cpu_pre_c0()) {
+        outb((0 << 7)|(0 << 6)|(0<<5)|(0<<4)|(1<<2)|(0<<0), SMBUS_IO_BASE + 0xc0 + 16);  //REVC_MEMRST_EN=0
+   }
+   else {
+        outb((0 << 7)|(0 << 6)|(0<<5)|(0<<4)|(1<<2)|(1<<0), SMBUS_IO_BASE + 0xc0 + 16);  //REVC_MEMRST_EN=1
+   }
+        outb((0 << 7)|(0 << 6)|(0<<5)|(0<<4)|(1<<2)|(0<<0), SMBUS_IO_BASE + 0xc0 + 17);
+}
+
+static void memreset(int controllers, const struct mem_controller *ctrl)
+{
+   if (is_cpu_pre_c0()) {
+        udelay(800);
+        outb((0<<7)|(0<<6)|(0<<5)|(0<<4)|(1<<2)|(1<<0), SMBUS_IO_BASE + 0xc0 + 17); //REVB_MEMRST_L=1
+        udelay(90);
+   }
+}
+static inline void activate_spd_rom(const struct mem_controller *ctrl)
+{
+#define SMBUS_HUB 0x18
+        int ret,i;
+        unsigned device=(ctrl->channel0[0])>>8;
+        i=2;
+        do {
+                ret = smbus_write_byte(SMBUS_HUB, 0x01, device);
+        } while ((ret!=0) && (i-->0));
+
+        smbus_write_byte(SMBUS_HUB, 0x03, 0);
+}
+
+static inline int spd_read_byte(unsigned device, unsigned address)
+{
+	return smbus_read_byte(device, address);
+}
+
+#define K8_4RANK_DIMM_SUPPORT 1
+
+#include "northbridge/amd/amdk8/raminit.c"
+#if 0
+        #define ENABLE_APIC_EXT_ID 1
+        #define APIC_ID_OFFSET 0x10
+        #define LIFT_BSP_APIC_ID 0
+#else 
+        #define ENABLE_APIC_EXT_ID 0
+#endif
+#include "northbridge/amd/amdk8/coherent_ht.c"
+#include "sdram/generic_sdram.c"
+
+ /* tyan does not want the default */
+#include "resourcemap.c" 
+
+#if CONFIG_LOGICAL_CPUS==1
+#define SET_NB_CFG_54 1
+#include "cpu/amd/dualcore/dualcore.c"
+#endif
+#define FIRST_CPU  1
+#define SECOND_CPU 1
+
+#define THIRD_CPU  1 
+#define FOURTH_CPU 1 
+
+#define TOTAL_CPUS (FIRST_CPU + SECOND_CPU + THIRD_CPU + FOURTH_CPU)
+
+#define RC0 ((1<<2)<<8)
+#define RC1 ((1<<1)<<8)
+#define RC2 ((1<<4)<<8)
+#define RC3 ((1<<3)<<8)
+
+#define DIMM0 0x50
+#define DIMM1 0x51
+#define DIMM2 0x52
+#define DIMM3 0x53
+
+#include "cpu/amd/car/copy_and_run.c"
+
+#if USE_FALLBACK_IMAGE == 1
+
+#include "southbridge/amd/amd8111/amd8111_enable_rom.c"
+#include "northbridge/amd/amdk8/early_ht.c"
+
+void real_main(unsigned long bist);
+
+void amd64_main(unsigned long bist)
+{
+#if CONFIG_LOGICAL_CPUS==1
+        struct node_core_id id;
+#else
+        unsigned nodeid;
+#endif
+        /* Make cerain my local apic is useable */
+//        enable_lapic();
+
+#if CONFIG_LOGICAL_CPUS==1
+        id = get_node_core_id_x();
+        /* Is this a cpu only reset? */
+        if (cpu_init_detected(id.nodeid)) {
+#else
+//        nodeid = lapicid();
+	nodeid = get_node_id();
+        /* Is this a cpu only reset? */
+        if (cpu_init_detected(nodeid)) {
+#endif
+                if (last_boot_normal()) {
+                        goto normal_image;
+                } else {
+                        goto cpu_reset;
+                }
+        }
+
+        /* Is this a secondary cpu? */
+        if (!boot_cpu()) {
+                if (last_boot_normal()) {
+                        goto normal_image;
+                } else {
+                        goto fallback_image;
+                }
+        }
+
+        /* Nothing special needs to be done to find bus 0 */
+        /* Allow the HT devices to be found */
+
+        enumerate_ht_chain();
+
+        /* Setup the ck804 */
+        amd8111_enable_rom();
+
+        /* Is this a deliberate reset by the bios */
+        if (bios_reset_detected() && last_boot_normal()) {
+                goto normal_image;
+        }
+        /* This is the primary cpu how should I boot? */
+        else if (do_normal_boot()) {
+                goto normal_image;
+        }
+        else {
+                goto fallback_image;
+        }
+ normal_image:
+        __asm__ volatile ("jmp __normal_image"
+                : /* outputs */
+                : "a" (bist) /* inputs */
+                );
+ cpu_reset:
+#if 0
+        //CPU reset will reset memtroller ???
+        asm volatile ("jmp __cpu_reset" 
+                : /* outputs */ 
+                : "a"(bist) /* inputs */
+                );
+#endif
+
+ fallback_image:
+        real_main(bist);
+}
+void real_main(unsigned long bist)
+#else
+void amd64_main(unsigned long bist)
+#endif
+{
+	static const struct mem_controller cpu[] = {
+#if FIRST_CPU
+                {
+                        .node_id = 0,
+                        .f0 = PCI_DEV(0, 0x18, 0),
+                        .f1 = PCI_DEV(0, 0x18, 1),
+                        .f2 = PCI_DEV(0, 0x18, 2),
+                        .f3 = PCI_DEV(0, 0x18, 3),
+                        .channel0 = { RC0|DIMM0, RC0|DIMM2, 0, 0 },
+                        .channel1 = { RC0|DIMM1, RC0|DIMM3, 0, 0 },
+                },
+#endif
+#if SECOND_CPU
+                {
+                        .node_id = 1,
+                        .f0 = PCI_DEV(0, 0x19, 0),
+                        .f1 = PCI_DEV(0, 0x19, 1),
+                        .f2 = PCI_DEV(0, 0x19, 2),
+                        .f3 = PCI_DEV(0, 0x19, 3),
+                        .channel0 = { RC1|DIMM0, RC1|DIMM2 , 0, 0 },
+                        .channel1 = { RC1|DIMM1, RC1|DIMM3 , 0, 0 },
+
+                },
+#endif
+
+#if THIRD_CPU
+                {
+                        .node_id = 2,
+                        .f0 = PCI_DEV(0, 0x1a, 0),
+                        .f1 = PCI_DEV(0, 0x1a, 1),
+                        .f2 = PCI_DEV(0, 0x1a, 2),
+                        .f3 = PCI_DEV(0, 0x1a, 3),
+                        .channel0 = { RC2|DIMM0, RC2|DIMM2, 0, 0 },
+                        .channel1 = { RC2|DIMM1, RC2|DIMM3, 0, 0 },
+
+                },
+#endif
+#if FOURTH_CPU
+                {
+                        .node_id = 3,
+                        .f0 = PCI_DEV(0, 0x1b, 0),
+                        .f1 = PCI_DEV(0, 0x1b, 1),
+                        .f2 = PCI_DEV(0, 0x1b, 2),
+                        .f3 = PCI_DEV(0, 0x1b, 3),
+                        .channel0 = { RC3|DIMM0, RC3|DIMM2, 0, 0 },
+                        .channel1 = { RC3|DIMM1, RC3|DIMM3, 0, 0 },
+
+                },
+#endif
+	};
+
+        int needs_reset;
+	unsigned cpu_reset = 0;
+
+        if (bist == 0) {
+#if CONFIG_LOGICAL_CPUS==1
+        	struct node_core_id id;
+#else
+	        unsigned nodeid;
+#endif
+                /* Skip this if there was a built in self test failure */
+//                amd_early_mtrr_init(); # don't need, already done in cache_as_ram
+
+#if CONFIG_LOGICAL_CPUS==1
+                set_apicid_cpuid_lo();
+		id = get_node_core_id_x(); // that is initid
+        #if ENABLE_APIC_EXT_ID == 1
+                if(id.coreid == 0) {
+                        enable_apic_ext_id(id.nodeid);
+                }
+        #endif
+#else
+                nodeid = get_node_id();
+        #if ENABLE_APIC_EXT_ID == 1
+                enable_apic_ext_id(nodeid);
+        #endif
+#endif
+
+                enable_lapic();
+                init_timer();
+
+
+#if CONFIG_LOGICAL_CPUS==1
+        #if ENABLE_APIC_EXT_ID == 1
+            #if LIFT_BSP_APIC_ID == 0
+                if( id.nodeid != 0 ) //all except cores in node0
+            #endif
+                        lapic_write(LAPIC_ID, ( lapic_read(LAPIC_ID) | (APIC_ID_OFFSET<<24) ) );
+        #endif
+                if(id.coreid == 0) {
+                        if (cpu_init_detected(id.nodeid)) {
+				cpu_reset = 1;
+				goto cpu_reset_x;
+                        }
+                        distinguish_cpu_resets(id.nodeid);
+                }
+#else
+        #if ENABLE_APIC_EXT_ID == 1
+            #if LIFT_BSP_APIC_ID == 0
+                if(nodeid != 0)
+            #endif
+                        lapic_write(LAPIC_ID, ( lapic_read(LAPIC_ID) | (APIC_ID_OFFSET<<24) ) ); // CPU apicid is from 0x10
+
+        #endif
+                if (cpu_init_detected(nodeid)) {
+			cpu_reset = 1;
+			goto cpu_reset_x;
+                }
+                distinguish_cpu_resets(nodeid);
+#endif
+
+
+                if (!boot_cpu()
+#if CONFIG_LOGICAL_CPUS==1 
+                        || (id.coreid != 0)
+#endif
+                ) {
+			// We need stop the CACHE as RAM for this CPU too
+			#include "cpu/amd/car/cache_as_ram_post.c"
+                        stop_this_cpu(); // it will stop all cores except core0 of cpu0
+                }
+        }
+
+	
+ 	w83627hf_enable_serial(SERIAL_DEV, TTYS0_BASE);
+        uart_init();
+        console_init();
+
+	dump_mem(DCACHE_RAM_BASE+DCACHE_RAM_SIZE-0x200, DCACHE_RAM_BASE+DCACHE_RAM_SIZE);
+	
+	/* Halt if there was a built in self test failure */
+	report_bist_failure(bist);
+
+        setup_s4882_resource_map();
+#if 0
+        dump_pci_device(PCI_DEV(0, 0x18, 0));
+	dump_pci_device(PCI_DEV(0, 0x19, 0));
+#endif
+
+	needs_reset = setup_coherent_ht_domain();
+	
+#if CONFIG_LOGICAL_CPUS==1
+        // It is said that we should start core1 after all core0 launched
+        start_other_cores();
+#endif
+        needs_reset |= ht_setup_chains_x();
+
+       	if (needs_reset) {
+               	print_info("ht reset -\r\n");
+               	soft_reset();
+       	}
+
+	enable_smbus();
+
+	memreset_setup();
+	sdram_initialize(sizeof(cpu)/sizeof(cpu[0]), cpu);
+
+#if 1
+        {
+        /* Check value of esp to verify if we have enough rom for stack in Cache as RAM */
+        unsigned v_esp;
+        __asm__ volatile (
+                "movl   %%esp, %0\n\t"
+                : "=a" (v_esp)
+        );
+#if CONFIG_USE_INIT
+        printk_debug("v_esp=%08x\r\n", v_esp);
+#else           
+        print_debug("v_esp="); print_debug_hex32(v_esp); print_debug("\r\n");
+#endif    
+        }
+#endif
+
+
+
+cpu_reset_x:
+
+#if CONFIG_USE_INIT
+        printk_debug("cpu_reset = %08x\r\n",cpu_reset);
+#else
+        print_debug("cpu_reset = "); print_debug_hex32(cpu_reset); print_debug("\r\n");
+#endif
+
+	if(cpu_reset == 0) {
+	        print_debug("Clearing initial memory region: ");
+	}
+	print_debug("No cache as ram now - ");
+
+	/* store cpu_reset to ebx */
+        __asm__ volatile (
+                "movl %0, %%ebx\n\t"
+                ::"a" (cpu_reset)
+        );
+
+	if(cpu_reset==0) {
+#define CLEAR_FIRST_1M_RAM 1
+#include "cpu/amd/car/cache_as_ram_post.c"
+	}
+	else {
+#undef CLEAR_FIRST_1M_RAM 
+#include "cpu/amd/car/cache_as_ram_post.c"
+	}
+
+	__asm__ volatile (
+                /* set new esp */ /* before _RAMBASE */
+                "movl   %0, %%ebp\n\t"
+                "movl   %0, %%esp\n\t"
+                ::"a"( _RAMBASE - 4 )
+	);
+
+	{
+		unsigned new_cpu_reset;
+
+		/* get back cpu_reset from ebx */
+		__asm__ volatile (
+			"movl %%ebx, %0\n\t"
+			:"=a" (new_cpu_reset)
+		);
+
+		print_debug("Use Ram as Stack now - "); /* but We can not go back any more, we lost old stack data in cache as ram*/
+		if(new_cpu_reset==0) {        
+		        print_debug("done\r\n");	
+		} else 
+		{	
+			print_debug("\r\n");
+		}
+
+#if CONFIG_USE_INIT
+                printk_debug("new_cpu_reset = %08x\r\n", new_cpu_reset);
+#else
+                print_debug("new_cpu_reset = "); print_debug_hex32(new_cpu_reset); print_debug("\r\n");
+#endif
+		/*copy and execute linuxbios_ram */
+		copy_and_run(new_cpu_reset);
+		/* We will not return */
+	}
+
+
+	print_debug("should not be here -\r\n");
+
+}
author	arch import user (historical) <svn@openbios.org>	2005-07-06 17:17:25 +0000
committer	arch import user (historical) <svn@openbios.org>	2005-07-06 17:17:25 +0000
commit	6ca7636c8f52560e732cdd5b1c7829cda5aa2bde (patch)
tree	cc45ae7c4dea6e2c5338f52b4314106bf07023be /src/mainboard
parent	b2ed53dd5669c2c3839633bd2b3b4af709a5b149 (diff)
download	coreboot-6ca7636c8f52560e732cdd5b1c7829cda5aa2bde.tar.xz