diff options
Diffstat (limited to 'src/mainboard/arima')
| -rw-r--r-- | src/mainboard/arima/hdama/Config.lb | 61 | ||||
| -rw-r--r-- | src/mainboard/arima/hdama/auto.c | 134 | ||||
| -rw-r--r-- | src/mainboard/arima/hdama/cmos.layout | 26 | ||||
| -rw-r--r-- | src/mainboard/arima/hdama/failover.c | 72 | ||||
| -rw-r--r-- | src/mainboard/arima/hdama/irq_tables.c | 36 | ||||
| -rw-r--r-- | src/mainboard/arima/hdama/mainboard.c | 247 |
6 files changed, 420 insertions, 156 deletions
diff --git a/src/mainboard/arima/hdama/Config.lb b/src/mainboard/arima/hdama/Config.lb index 60d74da0ab..fbb1a2bbee 100644 --- a/src/mainboard/arima/hdama/Config.lb +++ b/src/mainboard/arima/hdama/Config.lb @@ -23,6 +23,12 @@ uses XIP_ROM_BASE uses STACK_SIZE uses HEAP_SIZE uses USE_OPTION_TABLE +uses LB_CKS_RANGE_START +uses LB_CKS_RANGE_END +uses LB_CKS_LOC +uses MAINBOARD_PART_NUMBER +uses MAINBOARD_VENDOR + ## ROM_SIZE is the size of boot ROM that this board will use. default ROM_SIZE=524288 @@ -59,6 +65,13 @@ default HAVE_MP_TABLE=1 default HAVE_OPTION_TABLE=1 ## +## Move the default LinuxBIOS cmos range off of AMD RTC registers +## +default LB_CKS_RANGE_START=49 +default LB_CKS_RANGE_END=122 +default LB_CKS_LOC=123 + +## ## Build code for SMP support ## Only worry about 2 micro processors ## @@ -73,8 +86,8 @@ default CONFIG_IOAPIC=1 ## ## Clean up the motherboard id strings ## -#default MAINBOARD_PART_NUMBER="HDAMA" -#default MAINBOARD_VENDOR="ARIMA" +default MAINBOARD_PART_NUMBER="HDAMA" +default MAINBOARD_VENDOR="ARIMA" ### ### LinuxBIOS layout values @@ -144,9 +157,7 @@ arch i386 end ## Build the objects we have code for in this directory. ## -#object mainboard.o driver mainboard.o -#object static_devices.o if HAVE_MP_TABLE object mptable.o end if HAVE_PIRQ_TABLE object irq_tables.o end object reset.o @@ -165,8 +176,8 @@ makerule ./failover.inc end makerule ./auto.E - depends "$(MAINBOARD)/auto.c" - action "$(CPP) -I$(TOP)/src $(ROMCCPPFLAGS) $(CPPFLAGS) $(MAINBOARD)/auto.c > ./auto.E" + depends "$(MAINBOARD)/auto.c option_table.h " + action "$(CPP) -I$(TOP)/src -I. $(ROMCCPPFLAGS) $(CPPFLAGS) $(MAINBOARD)/auto.c > ./auto.E" end makerule ./auto.inc depends "./auto.E ./romcc" @@ -178,6 +189,7 @@ end ## mainboardinit cpu/i386/entry16.inc mainboardinit cpu/i386/entry32.inc +mainboardinit cpu/i386/bist32.inc ldscript /cpu/i386/entry16.lds ldscript /cpu/i386/entry32.lds @@ -259,19 +271,29 @@ northbridge amd/amdk8 "mc0" pci 1:0.2 on pci 1:1.0 off superio NSC/pc87360 link 1 - pnp 2e.0 - pnp 2e.1 - pnp 2e.2 - pnp 2e.3 - pnp 2e.4 - pnp 2e.5 - pnp 2e.6 - pnp 2e.7 - pnp 2e.8 - pnp 2e.9 - pnp 2e.a - register "com1" = "{1, 0, 0x3f8, 4}" - register "lpt" = "{1}" + pnp 2e.0 off # Floppy + io 0x60 = 0x3f0 + irq 0x70 = 6 + drq 0x74 = 2 + pnp 2e.1 off # Parallel Port + io 0x60 = 0x378 + irq 0x70 = 7 + pnp 2e.2 off # Com 2 + io 0x60 = 0x2f8 + irq 0x70 = 3 + pnp 2e.3 on # Com 1 + io 0x60 = 0x3f8 + irq 0x70 = 4 + pnp 2e.4 off # SWC + pnp 2e.5 off # Mouse + pnp 2e.6 on # Keyboard + io 0x60 = 0x60 + io 0x62 = 0x64 + irq 0x70 = 1 + pnp 2e.7 off # GPIO + pnp 2e.8 off # ACB + pnp 2e.9 off # FSCM + pnp 2e.a off # WDT end end end @@ -297,4 +319,5 @@ end ## mainboardinit pc80/serial.inc mainboardinit arch/i386/lib/console.inc +mainboardinit cpu/i386/bist32_fail.inc diff --git a/src/mainboard/arima/hdama/auto.c b/src/mainboard/arima/hdama/auto.c index 689346e6f2..e011809f49 100644 --- a/src/mainboard/arima/hdama/auto.c +++ b/src/mainboard/arima/hdama/auto.c @@ -1,14 +1,16 @@ #define ASSEMBLY 1 #include <stdint.h> #include <device/pci_def.h> -#include <cpu/p6/apic.h> #include <arch/io.h> -#include <device/pnp.h> +#include <device/pnp_def.h> #include <arch/romcc_io.h> +#include <arch/smp/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/early_ht.c" +#include "northbridge/amd/amdk8/incoherent_ht.c" #include "southbridge/amd/amd8111/amd8111_early_smbus.c" #include "northbridge/amd/amdk8/raminit.h" #include "cpu/k8/apic_timer.c" @@ -17,8 +19,25 @@ #include "northbridge/amd/amdk8/reset_test.c" #include "debug.c" #include "northbridge/amd/amdk8/cpu_rev.c" +#include "superio/NSC/pc87360/pc87360_early_serial.c" -#define SIO_BASE 0x2e +#define SERIAL_DEV PNP_DEV(0x2e, PC87360_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) { @@ -75,13 +94,13 @@ static unsigned int generate_row(uint8_t node, uint8_t row, uint8_t maxnodes) { 0x00010404, 0x00050101 } }; - if(maxnodes>2) { + if(maxnodes > 2) { print_debug("this mainboard is only designed for 2 cpus\r\n"); maxnodes=2; } - if (!(node>=maxnodes || row>=maxnodes)) { + if (!(node >= maxnodes || row >= maxnodes)) { ret=rows_2p[node][row]; } @@ -98,67 +117,12 @@ static inline int spd_read_byte(unsigned device, unsigned address) return smbus_read_byte(device, address); } -/* no specific code here. this should go away completely */ -static void coherent_ht_mainboard(unsigned cpus) -{ -} - #include "northbridge/amd/amdk8/raminit.c" #include "northbridge/amd/amdk8/coherent_ht.c" #include "sdram/generic_sdram.c" -static void enable_lapic(void) -{ - msr_t msr; - msr = rdmsr(0x1b); - msr.hi &= 0xffffff00; - msr.lo &= 0x000007ff; - msr.lo |= APIC_DEFAULT_BASE | (1 << 11); - wrmsr(0x1b, msr); -} - -static void stop_this_cpu(void) -{ - unsigned apicid; - apicid = apic_read(APIC_ID) >> 24; - /* Send an APIC INIT to myself */ - apic_write(APIC_ICR2, SET_APIC_DEST_FIELD(apicid)); - apic_write(APIC_ICR, APIC_INT_LEVELTRIG | APIC_INT_ASSERT | APIC_DM_INIT); - /* Wait for the ipi send to finish */ - apic_wait_icr_idle(); - - /* Deassert the APIC INIT */ - apic_write(APIC_ICR2, SET_APIC_DEST_FIELD(apicid)); - apic_write(APIC_ICR, APIC_INT_LEVELTRIG | APIC_DM_INIT); - /* Wait for the ipi send to finish */ - apic_wait_icr_idle(); - - /* If I haven't halted spin forever */ - for(;;) { - hlt(); - } -} - -#define PC87360_FDC 0x00 -#define PC87360_PP 0x01 -#define PC87360_SP2 0x02 -#define PC87360_SP1 0x03 -#define PC87360_SWC 0x04 -#define PC87360_KBCM 0x05 -#define PC87360_KBCK 0x06 -#define PC87360_GPIO 0x07 -#define PC87360_ACB 0x08 -#define PC87360_FSCM 0x09 -#define PC87360_WDT 0x0A - -static void pc87360_enable_serial(void) -{ - pnp_set_logical_device(SIO_BASE, PC87360_SP1); - pnp_set_enable(SIO_BASE, 1); - pnp_set_iobase0(SIO_BASE, 0x3f8); -} #define FIRST_CPU 1 #define SECOND_CPU 1 @@ -193,22 +157,26 @@ static void main(void) }, #endif }; + int needs_reset; + enable_lapic(); + init_timer(); if (cpu_init_detected()) { asm("jmp __cpu_reset"); } - enable_lapic(); - init_timer(); + distinguish_cpu_resets(); if (!boot_cpu()) { stop_this_cpu(); } - pc87360_enable_serial(); + pc87360_enable_serial(SERIAL_DEV, TTYS0_BASE); uart_init(); console_init(); setup_default_resource_map(); - setup_coherent_ht_domain(); - enumerate_ht_chain(0); - distinguish_cpu_resets(0); - + needs_reset = setup_coherent_ht_domain(); + needs_reset |= ht_setup_chain(PCI_DEV(0, 0x18, 0), 0x80); + if (needs_reset) { + print_info("ht reset -"); + soft_reset(); + } #if 0 print_pci_devices(); #endif @@ -219,39 +187,15 @@ static void main(void) memreset_setup(); sdram_initialize(sizeof(cpu)/sizeof(cpu[0]), cpu); -#if 1 +#if 0 dump_pci_devices(); #endif #if 0 dump_pci_device(PCI_DEV(0, 0x18, 2)); #endif - /* Check all of memory */ -#if 0 - msr_t msr; - msr = rdmsr(TOP_MEM); - print_debug("TOP_MEM: "); - print_debug_hex32(msr.hi); - print_debug_hex32(msr.lo); - print_debug("\r\n"); -#endif -#if 0 - ram_check(0x00000000, msr.lo); -#endif #if 0 - static const struct { - unsigned long lo, hi; - } check_addrs[] = { - /* Check 16MB of memory @ 0*/ - { 0x00000000, 0x01000000 }, -#if TOTAL_CPUS > 1 - /* Check 16MB of memory @ 2GB */ - { 0x80000000, 0x81000000 }, -#endif - }; - int i; - for(i = 0; i < sizeof(check_addrs)/sizeof(check_addrs[0]); i++) { - ram_check(check_addrs[i].lo, check_addrs[i].hi); - } + /* Check the first 1M */ + ram_check(0x00000000, 0x000100000); #endif } diff --git a/src/mainboard/arima/hdama/cmos.layout b/src/mainboard/arima/hdama/cmos.layout index 5ba4c032c1..247715e6ac 100644 --- a/src/mainboard/arima/hdama/cmos.layout +++ b/src/mainboard/arima/hdama/cmos.layout @@ -29,6 +29,9 @@ entries 386 1 e 1 ECC_memory 388 4 r 0 reboot_bits 392 3 e 5 baud_rate +395 1 e 1 hw_scrubber +396 1 e 1 interleave_chip_selects +397 2 e 8 max_mem_clock 400 1 e 1 power_on_after_fail 412 4 e 6 debug_level 416 4 e 7 boot_first @@ -36,7 +39,14 @@ entries 424 4 e 7 boot_third 428 4 h 0 boot_index 432 8 h 0 boot_countdown -1008 16 h 0 check_sum +440 4 e 9 slow_cpu +444 1 e 1 nmi +728 256 h 0 user_data +984 16 h 0 check_sum +# Reserve the extended AMD configuration registers +1000 24 r 0 reserved_memory + + enumerations @@ -66,9 +76,21 @@ enumerations 7 9 Fallback_HDD 7 10 Fallback_Floppy #7 3 ROM +8 0 200Mhz +8 1 166Mhz +8 2 133Mhz +8 3 100Mhz +9 0 off +9 1 87.5% +9 2 75.0% +9 3 62.5% +9 4 50.0% +9 5 37.5% +9 6 25.0% +9 7 12.5% checksums -checksum 392 1007 1008 +checksum 392 983 984 diff --git a/src/mainboard/arima/hdama/failover.c b/src/mainboard/arima/hdama/failover.c index bd9c17020e..b22abfea06 100644 --- a/src/mainboard/arima/hdama/failover.c +++ b/src/mainboard/arima/hdama/failover.c @@ -3,40 +3,78 @@ #include <device/pci_def.h> #include <device/pci_ids.h> #include <arch/io.h> -#include "arch/romcc_io.h" +#include <arch/romcc_io.h> +#include <arch/smp/lapic.h> #include "pc80/mc146818rtc_early.c" #include "southbridge/amd/amd8111/amd8111_enable_rom.c" #include "northbridge/amd/amdk8/early_ht.c" #include "cpu/p6/boot_cpu.c" #include "northbridge/amd/amdk8/reset_test.c" +#define HAVE_REGPARM_SUPPORT 0 +#if HAVE_REGPARM_SUPPORT +static unsigned long main(unsigned long bist) +{ +#else static void main(void) { - /* Nothing special needs to be done to find bus 0 */ - /* Allow the HT devices to be found */ - enumerate_ht_chain(0); - - /* Setup the 8111 */ - amd8111_enable_rom(); + unsigned long bist = 0; +#endif + /* Make cerain my local apic is useable */ + enable_lapic(); - /* Is this a cpu reset? */ + /* Is this a cpu only reset? */ if (cpu_init_detected()) { if (last_boot_normal()) { - asm("jmp __normal_image"); + goto normal_image; } else { - asm("jmp __cpu_reset"); + goto cpu_reset; } } - /* Is this a deliberate reset by the bios */ - else if (bios_reset_detected() && last_boot_normal()) { - asm("jmp __normal_image"); - } /* Is this a secondary cpu? */ - else if (!boot_cpu() && last_boot_normal()) { - asm("jmp __normal_image"); + 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 8111 */ + 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()) { - asm("jmp __normal_image"); + goto normal_image; + } + else { + goto fallback_image; } + normal_image: + asm("jmp __normal_image" + : /* outputs */ + : "a" (bist) /* inputs */ + : /* clobbers */ + ); + cpu_reset: + asm("jmp __cpu_reset" + : /* outputs */ + : "a"(bist) /* inputs */ + : /* clobbers */ + ); + fallback_image: +#if HAVE_REGPARM_SUPPORT + return bist; +#else + return; +#endif } diff --git a/src/mainboard/arima/hdama/irq_tables.c b/src/mainboard/arima/hdama/irq_tables.c index 9be2d1cf14..c54d43bbd1 100644 --- a/src/mainboard/arima/hdama/irq_tables.c +++ b/src/mainboard/arima/hdama/irq_tables.c @@ -17,36 +17,28 @@ const struct irq_routing_table intel_irq_routing_table = { PIRQ_SIGNATURE, /* u32 signature */ - PIRQ_VERSION, /* u16 version */ - 32+16*IRQ_SLOT_COUNT, /* there can be total IRQ_SLOT_COUNT - * devices on the bus */ + PIRQ_VERSION, /* u16 version */ + 32+16*IRQ_SLOT_COUNT, /* there can be total IRQ_SLOT_COUNT table entries */ IRQ_ROUTER_BUS, /* Where the interrupt router lies (bus) */ IRQ_ROUTER_DEVFN, /* Where the interrupt router lies (dev) */ 0x00, /* IRQs devoted exclusively to PCI usage */ IRQ_ROUTER_VENDOR, /* Vendor */ IRQ_ROUTER_DEVICE, /* Device */ 0x00, /* Crap (miniport) */ - { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* u8 rfu[11] */ - 0x00, /* u8 checksum , mod 256 checksum must give - * zero, will be corrected later - */ - { - - /* slot(0=onboard), devfn, irqlinks (line id, 0=not routed) */ - + { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* u8 rfu[11] */ + 0xb0, /* u8 checksum , mod 256 checksum must give zero */ + { /* slot(0=onboard), devfn, irqlinks (line id, 0=not routed) */ /* PCI Slot 1-6 */ - IRQ_SLOT (1, 3,1,0, 2,3,4,1 ), - IRQ_SLOT (2, 3,2,0, 3,4,1,2 ), - IRQ_SLOT (3, 2,1,0, 2,3,4,1 ), - IRQ_SLOT (4, 2,2,0, 3,4,1,2 ), - IRQ_SLOT (5, 4,5,0, 2,3,4,1 ), - IRQ_SLOT (6, 4,4,0, 1,2,3,4 ), - + IRQ_SLOT(1, 3,1,0, 2,3,4,1 ), + IRQ_SLOT(2, 3,2,0, 3,4,1,2 ), + IRQ_SLOT(3, 2,1,0, 2,3,4,1 ), + IRQ_SLOT(4, 2,2,0, 3,4,1,2 ), + IRQ_SLOT(5, 4,5,0, 2,3,4,1 ), + IRQ_SLOT(6, 4,4,0, 1,2,3,4 ), /* Onboard NICs */ - IRQ_SLOT (0, 2,3,0, 4,0,0,0 ), - IRQ_SLOT (0, 2,4,0, 4,0,0,0 ), - + IRQ_SLOT(0, 2,3,0, 4,0,0,0 ), + IRQ_SLOT(0, 2,4,0, 4,0,0,0 ), /* Let Linux know about bus 1 */ - IRQ_SLOT (0, 1,4,3, 0,0,0,0 ), + IRQ_SLOT(0, 1,4,3, 0,0,0,0 ), } }; diff --git a/src/mainboard/arima/hdama/mainboard.c b/src/mainboard/arima/hdama/mainboard.c index 82041282f6..bbc6f53716 100644 --- a/src/mainboard/arima/hdama/mainboard.c +++ b/src/mainboard/arima/hdama/mainboard.c @@ -3,23 +3,268 @@ #include <device/pci.h> #include <device/pci_ids.h> #include <device/pci_ops.h> +#include <cpu/p6/msr.h> #include <arch/io.h> #include <device/chip.h> #include "../../../northbridge/amd/amdk8/northbridge.h" #include "chip.h" +#include "pc80/mc146818rtc.h" + + unsigned long initial_apicid[CONFIG_MAX_CPUS] = { 0, 1, }; +#define SMBGSTATUS 0xe0 +#define SMBGCTL 0xe2 +#define SMBHSTADDR 0xe4 +#define SMBHSTDAT 0xe6 +#define SMBHSTCMD 0xe8 +#define SMBHSTFIFO 0xe9 + +#define SMBUS_TIMEOUT (100*1000*10) + +static inline void smbus_delay(void) +{ + outb(0x80, 0x80); +} + +static int smbus_wait_until_ready(unsigned smbus_io_base) +{ + unsigned long loops; + loops = SMBUS_TIMEOUT; + do { + unsigned short val; + smbus_delay(); + val = inw(smbus_io_base + SMBGSTATUS); + if ((val & 0x800) == 0) { + break; + } + if(loops == (SMBUS_TIMEOUT / 2)) { + outw(inw(smbus_io_base + SMBGSTATUS), + smbus_io_base + SMBGSTATUS); + } + } while(--loops); + return loops?0:-2; +} + +static int smbus_wait_until_done(unsigned smbus_io_base) +{ + unsigned long loops; + loops = SMBUS_TIMEOUT; + do { + unsigned short val; + smbus_delay(); + + val = inw(smbus_io_base + SMBGSTATUS); + if (((val & 0x8) == 0) | ((val & 0x437) != 0)) { + break; + } + } while(--loops); + return loops?0:-3; +} + +static int smbus_send_byte(unsigned smbus_io_base, unsigned device, unsigned value) +{ + unsigned char global_status_register; + + if (smbus_wait_until_ready(smbus_io_base) < 0) { + return -2; + } + + /* setup transaction */ + /* disable interrupts */ + outw(inw(smbus_io_base + SMBGCTL) & ~((1<<10)|(1<<9)|(1<<8)|(1<<4)), smbus_io_base + SMBGCTL); + /* set the device I'm talking too */ + outw(((device & 0x7f) << 1) | 0, smbus_io_base + SMBHSTADDR); + /* set the command/address... */ + outb(0, smbus_io_base + SMBHSTCMD); + /* set up for a send byte */ + outw((inw(smbus_io_base + SMBGCTL) & ~7) | (0x1), smbus_io_base + SMBGCTL); + + /* clear any lingering errors, so the transaction will run */ + /* Do I need to write the bits to a 1 to clear an error? */ + outw(inw(smbus_io_base + SMBGSTATUS), smbus_io_base + SMBGSTATUS); + + /* set the data word...*/ + outw(value, smbus_io_base + SMBHSTDAT); + + /* start the command */ + outw((inw(smbus_io_base + SMBGCTL) | (1 << 3)), smbus_io_base + SMBGCTL); + + + /* poll for transaction completion */ + if (smbus_wait_until_done(smbus_io_base) < 0) { + return -3; + } + global_status_register = inw(smbus_io_base + SMBGSTATUS); + + if (global_status_register != (1 << 4)) { + return -1; + } + return 0; +} + +static int smbus_recv_byte(unsigned smbus_io_base, unsigned device) +{ + unsigned char global_status_register; + unsigned char byte; + + if (smbus_wait_until_ready(smbus_io_base) < 0) { + return -2; + } + + /* setup transaction */ + /* disable interrupts */ + outw(inw(smbus_io_base + SMBGCTL) & ~((1<<10)|(1<<9)|(1<<8)|(1<<4)), smbus_io_base + SMBGCTL); + /* set the device I'm talking too */ + outw(((device & 0x7f) << 1) | 1, smbus_io_base + SMBHSTADDR); + /* set the command/address... */ + outb(0, smbus_io_base + SMBHSTCMD); + /* set up for a send byte */ + outw((inw(smbus_io_base + SMBGCTL) & ~7) | (0x1), smbus_io_base + SMBGCTL); + + /* clear any lingering errors, so the transaction will run */ + /* Do I need to write the bits to a 1 to clear an error? */ + outw(inw(smbus_io_base + SMBGSTATUS), smbus_io_base + SMBGSTATUS); + + /* set the data word...*/ + outw(0, smbus_io_base + SMBHSTDAT); + + /* start the command */ + outw((inw(smbus_io_base + SMBGCTL) | (1 << 3)), smbus_io_base + SMBGCTL); + + + /* poll for transaction completion */ + if (smbus_wait_until_done(smbus_io_base) < 0) { + return -3; + } + + global_status_register = inw(smbus_io_base + SMBGSTATUS); + + /* read results of transaction */ + byte = inw(smbus_io_base + SMBHSTDAT) & 0xff; + + if (global_status_register != (1 << 4)) { + return -1; + } + return byte; +} + +#if 0 +static int smbus_read_byte(unsigned smbus_io_base, unsigned device, unsigned address) +{ + unsigned char global_status_register; + unsigned char byte; + + if (smbus_wait_until_ready(smbus_io_base) < 0) { + return -2; + } + + /* setup transaction */ + /* disable interrupts */ + outw(inw(smbus_io_base + SMBGCTL) & ~((1<<10)|(1<<9)|(1<<8)|(1<<4)), smbus_io_base + SMBGCTL); + /* set the device I'm talking too */ + outw(((device & 0x7f) << 1) | 1, smbus_io_base + SMBHSTADDR); + /* set the command/address... */ + outb(address & 0xFF, smbus_io_base + SMBHSTCMD); + /* set up for a byte data read */ + outw((inw(smbus_io_base + SMBGCTL) & ~7) | (0x2), smbus_io_base + SMBGCTL); + + /* clear any lingering errors, so the transaction will run */ + /* Do I need to write the bits to a 1 to clear an error? */ + outw(inw(smbus_io_base + SMBGSTATUS), smbus_io_base + SMBGSTATUS); + + /* clear the data word...*/ + outw(0, smbus_io_base + SMBHSTDAT); + + /* start the command */ + outw((inw(smbus_io_base + SMBGCTL) | (1 << 3)), smbus_io_base + SMBGCTL); + + + /* poll for transaction completion */ + if (smbus_wait_until_done(smbus_io_base) < 0) { + return -3; + } + + global_status_register = inw(smbus_io_base + SMBGSTATUS); + + /* read results of transaction */ + byte = inw(smbus_io_base + SMBHSTDAT) & 0xff; + + if (global_status_register != (1 << 4)) { + return -1; + } + return byte; +} + +static int smbus_write_byte(unsigned smbus_io_base, unsigned device, unsigned address, unsigned char val) +{ + if (smbus_wait_until_ready(smbus_io_base) < 0) { + return -2; + } + + /* setup transaction */ + /* disable interrupts */ + outw(inw(smbus_io_base + SMBGCTL) & ~((1<<10)|(1<<9)|(1<<8)|(1<<4)), + smbus_io_base + SMBGCTL); + /* set the device I'm talking too */ + outw(((device & 0x7f) << 1) | 0, smbus_io_base + SMBHSTADDR); + outb(address & 0xFF, smbus_io_base + SMBHSTCMD); + /* set up for a byte data write */ /* FIXME */ + outw((inw(smbus_io_base + SMBGCTL) & ~7) | (0x1), smbus_io_base + SMBGCTL); + /* clear any lingering errors, so the transaction will run */ + /* Do I need to write the bits to a 1 to clear an error? */ + outw(inw(smbus_io_base + SMBGSTATUS), smbus_io_base + SMBGSTATUS); + + /* clear the data word...*/ + outw(val, smbus_io_base + SMBHSTDAT); + + /* start the command */ + outw((inw(smbus_io_base + SMBGCTL) | (1 << 3)), smbus_io_base + SMBGCTL); + + /* poll for transaction completion */ + if (smbus_wait_until_done(smbus_io_base) < 0) { + return -3; + } + return 0; +} +#endif + +#define SMBUS_MUX 0x70 +static void mainboard_init(device_t dev) +{ + /* Set the mux to see the temperature sensors */ + dev = dev_find_device(0x1022, 0x746b, 0); + if (dev) { + unsigned smbus_io_base; + unsigned device; + int result; + int mux_setting; + device = SMBUS_MUX; + mux_setting = 1; + smbus_io_base = pci_read_config32(dev, 0x58) & ~1;; + result = smbus_send_byte(smbus_io_base, device, mux_setting); + if ((result < 0) || + (smbus_recv_byte(smbus_io_base, device) != mux_setting)) { + printk_err("SMBUS mux would not set to %d\n", mux_setting); + } + + } + else { + printk_err("SMBUS_controller not found\n"); + } +} + static struct device_operations mainboard_operations = { .read_resources = root_dev_read_resources, .set_resources = root_dev_set_resources, .enable_resources = enable_childrens_resources, - .init = 0, + .init = mainboard_init, .scan_bus = amdk8_scan_root_bus, .enable = 0, }; 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