This change adds PPC support to libpayload, and hooks it up in the build

process.
The PPC support is still stubbed, with commented out x86 code as guide
line for an implementor.

Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4293 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

34 files changed, 1057 insertions, 26 deletions

diff --git a/payloads/libpayload/Config.in b/payloads/libpayload/Config.in
index 55f09f7b2d..e0add21f4d 100644
--- a/payloads/libpayload/Config.in
+++ b/payloads/libpayload/Config.in
@@ -30,15 +30,27 @@
 
 mainmenu "Libpayload Configuration"
 
-# When (if) we support multiple architectures, this will become an option.
+menu "Architecture Options"
+
+choice
+        prompt "Target Architecture"
+        default TARGET_I386
+
 config TARGET_I386
-	bool
-	default y
+        bool "x86"
+        help
+          Support the x86 architecture
 
-menu "Architecture Options"
+config TARGET_POWERPC
+        bool "PowerPC"
+        help
+	  Support the PowerPC architecture
+
+endchoice
 
 config MULTIBOOT
 	bool "Multiboot header support"
+	depends on TARGET_I386
 	default y
 
 endmenu
diff --git a/payloads/libpayload/Makefile b/payloads/libpayload/Makefile
index 32c39575e7..8086b2949c 100644
--- a/payloads/libpayload/Makefile
+++ b/payloads/libpayload/Makefile
@@ -34,7 +34,7 @@ export srck := $(src)/util/kconfig
 export obj := $(src)/build
 export objk := $(src)/build/util/kconfig
 
-export KERNELVERSION      := 0.1.0
+export KERNELVERSION      := 0.2.0
 export KCONFIG_AUTOHEADER := $(src)/include/libpayload-config.h
 export KCONFIG_AUTOCONFIG := $(obj)/auto.conf
 
@@ -68,9 +68,10 @@ else
 
 include $(src)/.config
 
-ARCHDIR-$(CONFIG_TARGET_I386) := i386
+ARCHDIR-$(CONFIG_TARGET_I386)    := i386
+ARCHDIR-$(CONFIG_TARGET_POWERPC) := powerpc
 
-PLATFORM-y += $(ARCHDIR-y)/Makefile.inc
+PLATFORM-y += arch/$(ARCHDIR-y)/Makefile.inc
 TARGETS-y :=
 
 BUILD-y := crypto/Makefile.inc libc/Makefile.inc drivers/Makefile.inc
@@ -84,7 +85,7 @@ all: lib
 include $(PLATFORM-y) $(BUILD-y)
 
 OBJS     := $(patsubst %,$(obj)/%,$(TARGETS-y))
-INCLUDES := -Iinclude -Ibuild
+INCLUDES := -Iinclude -Ibuild -Iinclude/$(ARCHDIR-y)
 INCLUDES += -I$(shell $(CC) -print-search-dirs | head -n 1 | cut -d' ' -f2)include
 
 try-run= $(shell set -e; \
@@ -107,8 +108,8 @@ all: lib
 lib: $(obj)/lib/libpayload.a copystuff
 
 # Copy libpayload.a and head.o into $(src)/lib where lpgcc et al expect them.
-copystuff: $(obj)/$(ARCHDIR-y)/head.S.o $(obj)/lib/libpayload.a
-	$(Q)cp $(obj)/$(ARCHDIR-y)/head.S.o $(src)/lib/$(ARCHDIR-y)/head.o
+copystuff: $(obj)/arch/$(ARCHDIR-y)/head.S.o $(obj)/lib/libpayload.a
+	$(Q)cp $(obj)/arch/$(ARCHDIR-y)/head.S.o $(src)/lib/$(ARCHDIR-y)/head.o
 	$(Q)cp $(obj)/lib/libpayload.a $(src)/lib
 
 $(obj)/lib/libpayload.a: prepare $(OBJS)
@@ -138,7 +139,7 @@ prepare:
 	$(Q)mkdir -p $(obj)/util/kconfig/lxdialog
 	$(Q)mkdir -p $(obj)/crypto $(obj)/curses $(obj)/drivers/video
 	$(Q)mkdir -p $(obj)/drivers/usb
-	$(Q)mkdir -p $(obj)/i386 $(obj)/lib/$(ARCHDIR-y) $(obj)/libc 
+	$(Q)mkdir -p $(obj)/arch/$(ARCHDIR-y) $(obj)/lib/$(ARCHDIR-y) $(obj)/libc 
 	$(Q)mkdir -p $(src)/lib/$(ARCHDIR-y)
 
 doxy: doxygen
@@ -151,8 +152,8 @@ doxygen-clean:
 
 clean: doxygen-clean
 	$(Q)rm -rf $(obj)/crypto $(obj)/curses $(obj)/drivers
-	$(Q)rm -rf $(obj)/i386 $(obj)/lib $(obj)/libc 
-	$(Q)rm -rf $(src)/lib/i386 $(src)/lib/libpayload.a
+	$(Q)rm -rf $(obj)/i386 $(obj)/powerpc $(obj)/lib $(obj)/libc 
+	$(Q)rm -rf $(src)/lib/i386 $(src)/lib/powerpc $(src)/lib/libpayload.a
 
 distclean: clean
 	$(Q)rm -rf build
diff --git a/payloads/libpayload/arch/i386/Makefile.inc b/payloads/libpayload/arch/i386/Makefile.inc
new file mode 100644
index 0000000000..6461b72b79
--- /dev/null
+++ b/payloads/libpayload/arch/i386/Makefile.inc
@@ -0,0 +1,35 @@
+##
+## This file is part of the libpayload project.
+##
+## Copyright (C) 2008 Advanced Micro Devices, Inc.
+##
+## Redistribution and use in source and binary forms, with or without
+## modification, are permitted provided that the following conditions
+## are met:
+## 1. Redistributions of source code must retain the above copyright
+##    notice, this list of conditions and the following disclaimer.
+## 2. Redistributions in binary form must reproduce the above copyright
+##    notice, this list of conditions and the following disclaimer in the
+##    documentation and/or other materials provided with the distribution.
+## 3. The name of the author may not be used to endorse or promote products
+##    derived from this software without specific prior written permission.
+##
+## THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+## ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+## IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+## ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+## FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+## DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+## OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+## HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+## LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+## OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+## SUCH DAMAGE.
+##
+
+TARGETS-y += arch/i386/head.S.o arch/i386/main.o arch/i386/sysinfo.o
+TARGETS-y += arch/i386/timer.o arch/i386/coreboot.o arch/i386/util.S.o
+TARGETS-y += arch/i386/exec.S.o arch/i386/virtual.o
+
+# Multiboot support is configurable
+TARGETS-$(CONFIG_MULTIBOOT) += arch/i386/multiboot.o
diff --git a/payloads/libpayload/i386/coreboot.c b/payloads/libpayload/arch/i386/coreboot.c
index 95d8f16f76..95d8f16f76 100644
--- a/payloads/libpayload/i386/coreboot.c
+++ b/payloads/libpayload/arch/i386/coreboot.c
diff --git a/payloads/libpayload/i386/exec.S b/payloads/libpayload/arch/i386/exec.S
index 9a44196e6b..9a44196e6b 100644
--- a/payloads/libpayload/i386/exec.S
+++ b/payloads/libpayload/arch/i386/exec.S
diff --git a/payloads/libpayload/i386/head.S b/payloads/libpayload/arch/i386/head.S
index db18a5195f..db18a5195f 100644
--- a/payloads/libpayload/i386/head.S
+++ b/payloads/libpayload/arch/i386/head.S
diff --git a/payloads/libpayload/i386/main.c b/payloads/libpayload/arch/i386/main.c
index 48d6ef5495..48d6ef5495 100644
--- a/payloads/libpayload/i386/main.c
+++ b/payloads/libpayload/arch/i386/main.c
diff --git a/payloads/libpayload/i386/multiboot.c b/payloads/libpayload/arch/i386/multiboot.c
index 82736b14fe..82736b14fe 100644
--- a/payloads/libpayload/i386/multiboot.c
+++ b/payloads/libpayload/arch/i386/multiboot.c
diff --git a/payloads/libpayload/i386/sysinfo.c b/payloads/libpayload/arch/i386/sysinfo.c
index 599a81140d..599a81140d 100644
--- a/payloads/libpayload/i386/sysinfo.c
+++ b/payloads/libpayload/arch/i386/sysinfo.c
diff --git a/payloads/libpayload/i386/timer.c b/payloads/libpayload/arch/i386/timer.c
index 3d8607b3cb..3d8607b3cb 100644
--- a/payloads/libpayload/i386/timer.c
+++ b/payloads/libpayload/arch/i386/timer.c
diff --git a/payloads/libpayload/i386/util.S b/payloads/libpayload/arch/i386/util.S
index 9858d29b05..9858d29b05 100644
--- a/payloads/libpayload/i386/util.S
+++ b/payloads/libpayload/arch/i386/util.S
diff --git a/payloads/libpayload/i386/virtual.c b/payloads/libpayload/arch/i386/virtual.c
index cff26117dc..cff26117dc 100644
--- a/payloads/libpayload/i386/virtual.c
+++ b/payloads/libpayload/arch/i386/virtual.c
diff --git a/payloads/libpayload/i386/Makefile.inc b/payloads/libpayload/arch/powerpc/Makefile.inc
index 40d2699062..ddfb9fb560 100644
--- a/payloads/libpayload/i386/Makefile.inc
+++ b/payloads/libpayload/arch/powerpc/Makefile.inc
@@ -27,9 +27,7 @@
 ## SUCH DAMAGE.
 ##
 
-TARGETS-y += i386/head.S.o i386/main.o i386/sysinfo.o
-TARGETS-y += i386/timer.o i386/coreboot.o i386/util.S.o
-TARGETS-y += i386/exec.S.o i386/virtual.o
+TARGETS-y += arch/powerpc/head.S.o arch/powerpc/main.o arch/powerpc/sysinfo.o
+TARGETS-y += arch/powerpc/timer.o arch/powerpc/coreboot.o arch/powerpc/util.S.o
+TARGETS-y += arch/powerpc/exec.S.o arch/powerpc/virtual.o
 
-# Multiboot support is configurable
-TARGETS-$(CONFIG_MULTIBOOT) += i386/multiboot.o
diff --git a/payloads/libpayload/arch/powerpc/coreboot.c b/payloads/libpayload/arch/powerpc/coreboot.c
new file mode 100644
index 0000000000..95d8f16f76
--- /dev/null
+++ b/payloads/libpayload/arch/powerpc/coreboot.c
@@ -0,0 +1,169 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 Advanced Micro Devices, Inc.
+ * Copyright (C) 2009 coresystems GmbH
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <libpayload-config.h>
+#include <libpayload.h>
+#include <coreboot_tables.h>
+
+/*
+ * Some of this is x86 specific, and the rest of it is generic. Right now,
+ * since we only support x86, we'll avoid trying to make lots of infrastructure
+ * we don't need. If in the future, we want to use coreboot on some other
+ * architecture, then take out the generic parsing code and move it elsewhere.
+ */
+
+/* === Parsing code === */
+/* This is the generic parsing code. */
+
+static void cb_parse_memory(unsigned char *ptr, struct sysinfo_t *info)
+{
+	struct cb_memory *mem = (struct cb_memory *)ptr;
+	int count = MEM_RANGE_COUNT(mem);
+	int i;
+
+	if (count > SYSINFO_MAX_MEM_RANGES)
+		count = SYSINFO_MAX_MEM_RANGES;
+
+	info->n_memranges = 0;
+
+	for (i = 0; i < count; i++) {
+		struct cb_memory_range *range =
+		    (struct cb_memory_range *)MEM_RANGE_PTR(mem, i);
+
+#if MEMMAP_RAM_ONLY
+		if (range->type != CB_MEM_RAM)
+			continue;
+#endif
+
+		info->memrange[info->n_memranges].base =
+		    UNPACK_CB64(range->start);
+
+		info->memrange[info->n_memranges].size =
+		    UNPACK_CB64(range->size);
+
+		info->memrange[info->n_memranges].type = range->type;
+
+		info->n_memranges++;
+	}
+}
+
+static void cb_parse_serial(unsigned char *ptr, struct sysinfo_t *info)
+{
+	struct cb_serial *ser = (struct cb_serial *)ptr;
+	info->ser_ioport = ser->ioport;
+}
+
+#ifdef CONFIG_NVRAM
+static void cb_parse_optiontable(unsigned char *ptr, struct sysinfo_t *info)
+{
+	info->option_table = (struct cb_cmos_option_table *)ptr;
+}
+
+static void cb_parse_checksum(unsigned char *ptr, struct sysinfo_t *info)
+{
+	struct cb_cmos_checksum *cmos_cksum = (struct cb_cmos_checksum *)ptr;
+	info->cmos_range_start = cmos_cksum->range_start;
+	info->cmos_range_end = cmos_cksum->range_end;
+	info->cmos_checksum_location = cmos_cksum->location;
+}
+#endif
+
+static int cb_parse_header(void *addr, int len, struct sysinfo_t *info)
+{
+	struct cb_header *header;
+	unsigned char *ptr = (unsigned char *)addr;
+	int i;
+
+	for (i = 0; i < len; i += 16, ptr += 16) {
+		header = (struct cb_header *)ptr;
+		if (!strncmp((const char *)header->signature, "LBIO", 4))
+			break;
+	}
+
+	/* We walked the entire space and didn't find anything. */
+	if (i >= len)
+		return -1;
+
+	if (!header->table_bytes)
+		return 0;
+
+	/* Make sure the checksums match. */
+	if (ipchksum((u16 *) header, sizeof(*header)) != 0)
+		return -1;
+
+	if (ipchksum((u16 *) (ptr + sizeof(*header)),
+		     header->table_bytes) != header->table_checksum)
+		return -1;
+
+	/* Now, walk the tables. */
+	ptr += header->header_bytes;
+
+	for (i = 0; i < header->table_entries; i++) {
+		struct cb_record *rec = (struct cb_record *)ptr;
+
+		/* We only care about a few tags here (maybe more later). */
+		switch (rec->tag) {
+		case CB_TAG_FORWARD:
+			return cb_parse_header((void *)(unsigned long)((struct cb_forward *)rec)->forward, len, info);
+			continue;
+		case CB_TAG_MEMORY:
+			cb_parse_memory(ptr, info);
+			break;
+		case CB_TAG_SERIAL:
+			cb_parse_serial(ptr, info);
+			break;
+#ifdef CONFIG_NVRAM
+		case CB_TAG_CMOS_OPTION_TABLE:
+			cb_parse_optiontable(ptr, info);
+			break;
+		case CB_TAG_OPTION_CHECKSUM:
+			cb_parse_checksum(ptr, info);
+			break;
+#endif
+		}
+
+		ptr += rec->size;
+	}
+
+	return 1;
+}
+
+/* == Architecture specific == */
+/* This is the x86 specific stuff. */
+
+int get_coreboot_info(struct sysinfo_t *info)
+{
+	int ret = cb_parse_header(phys_to_virt(0x00000000), 0x1000, info);
+
+	if (ret != 1)
+		ret = cb_parse_header(phys_to_virt(0x000f0000), 0x1000, info);
+
+	return (ret == 1) ? 0 : -1;
+}
diff --git a/payloads/libpayload/arch/powerpc/exec.S b/payloads/libpayload/arch/powerpc/exec.S
new file mode 100644
index 0000000000..45672cba3e
--- /dev/null
+++ b/payloads/libpayload/arch/powerpc/exec.S
@@ -0,0 +1,100 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 Advanced Micro Devices, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/* calling syntax:  i386_do_exec(long addr, int argc, char **argv, int *ret) */
+
+/* This implements the payload API detailed here:
+ * http://www.coreboot.org/Payload_API
+ */
+
+.align 4
+.text
+
+.globl powerpc_do_exec
+        .type powerpc_do_exec,@function
+
+powerpc_do_exec:
+#if 0
+	pushl %ebp
+	movl %esp, %ebp
+	pushl %eax
+
+	/* Put the run address in %eax */
+	movl 8(%ebp), %eax
+
+	/* Save off the rest of the registers */
+
+	pushl %esi
+	pushl %ecx
+	pushl %ebp
+
+	/* Push the argc and argv pointers on to the stack */
+
+	movl 12(%ebp), %esi
+	movl 16(%ebp), %ecx
+
+	pushl %esi
+	pushl %ecx
+
+	/* Move a "magic" number on the stack - the other
+	 * payload will use this as a clue that the argc
+	 * and argv are sane
+	 */
+
+	movl  $12345678, %ecx
+	pushl %ecx
+
+	/* Jump to the code */
+	call *%eax
+
+	/* %eax has the return value */
+
+	/* Skip over the argc/argv stuff still on the stack */
+	addl $12, %esp
+
+	/* Get back %ebp */
+	popl %ebp
+
+	/* Get the pointer to the return value
+	 * and save the return value in it
+         */
+
+	movl 20(%ebp), %ecx
+	movl %eax, (%eax)
+
+	/* Get the rest of the saved registers */
+	popl %ecx
+	popl %esi
+	popl %eax
+
+	/* Restore the stack pointer */
+	movl %ebp,%esp
+	popl %ebp
+	ret
+#endif
diff --git a/payloads/libpayload/arch/powerpc/head.S b/payloads/libpayload/arch/powerpc/head.S
new file mode 100644
index 0000000000..de6edadaff
--- /dev/null
+++ b/payloads/libpayload/arch/powerpc/head.S
@@ -0,0 +1,87 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 Advanced Micro Devices, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+	.globl _entry, _leave
+	.text
+	.align 4
+
+/*
+ * Our entry point - assume that the CPU is in 32 bit protected mode and
+ * all segments are in a flat model. That's our operating mode, so we won't
+ * change anything.
+ */
+_entry:
+#if 0
+	call _init
+
+	/* We're back - go back to the bootloader. */
+	ret
+	.align 4
+
+
+/*
+ * This function saves off the previous stack and switches us to our
+ * own execution environment.
+ */
+_init:
+	/* No interrupts, please. */
+	cli
+
+	/* Store current stack pointer. */
+	movl %esp, %esi
+
+	/* Store EAX and EBX */
+
+	movl %eax,loader_eax
+	movl %ebx,loader_ebx
+
+	/* Setup new stack. */
+	movl $_stack, %ebx
+
+	movl %ebx, %esp
+
+	/* Save old stack pointer. */
+	pushl %esi
+
+	/* Let's rock. */
+	call start_main
+
+#endif
+	/* %eax has the return value - pass it on unmolested */
+_leave:
+#if 0
+	/* Get old stack pointer. */
+	popl %ebx
+
+	/* Restore old stack. */
+	movl %ebx, %esp
+
+	/* Return to the original context. */
+	ret
+#endif
diff --git a/payloads/libpayload/arch/powerpc/main.c b/payloads/libpayload/arch/powerpc/main.c
new file mode 100644
index 0000000000..48d6ef5495
--- /dev/null
+++ b/payloads/libpayload/arch/powerpc/main.c
@@ -0,0 +1,70 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 Advanced Micro Devices, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <libpayload.h>
+
+unsigned long loader_eax;  /**< The value of EAX passed from the loader */
+unsigned long loader_ebx;  /**< The value of EBX passed from the loader */
+
+unsigned int main_argc;    /**< The argc value to pass to main() */
+
+/** The argv value to pass to main() */
+char *main_argv[MAX_ARGC_COUNT];
+
+/**
+ * This is our C entry function - set up the system
+ * and jump into the payload entry point.
+ */
+void start_main(void)
+{
+	extern int main(int argc, char **argv);
+
+	/* Set up the consoles. */
+	console_init();
+
+	/* Gather system information. */
+	lib_get_sysinfo();
+
+	/*
+	 * Any other system init that has to happen before the
+	 * user gets control goes here.
+	 */
+
+	/*
+	 * Go to the entry point.
+	 * In the future we may care about the return value.
+	 */
+
+	(void) main(main_argc, (main_argc != 0) ? main_argv : NULL);
+
+	/*
+	 * Returning here will go to the _leave function to return
+	 * us to the original context.
+	 */
+}
diff --git a/payloads/libpayload/arch/powerpc/sysinfo.c b/payloads/libpayload/arch/powerpc/sysinfo.c
new file mode 100644
index 0000000000..599a81140d
--- /dev/null
+++ b/payloads/libpayload/arch/powerpc/sysinfo.c
@@ -0,0 +1,76 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 Advanced Micro Devices, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <libpayload-config.h>
+#include <libpayload.h>
+#include <coreboot_tables.h>
+#include <multiboot_tables.h>
+
+/**
+ * This is a global structure that is used through the library - we set it
+ * up initially with some dummy values - hopefully they will be overridden.
+ */
+struct sysinfo_t lib_sysinfo = {
+	.cpu_khz = 200,
+#ifdef CONFIG_SERIAL_CONSOLE
+	.ser_ioport = CONFIG_SERIAL_IOBASE,
+#else
+	.ser_ioport = 0x3f8,
+#endif
+};
+
+void lib_get_sysinfo(void)
+{
+	/* Get the CPU speed (for delays). */
+	lib_sysinfo.cpu_khz = get_cpu_speed();
+
+#ifdef CONFIG_MULTIBOOT
+	/* Get the information from the multiboot tables,
+	 * if they exist */
+	get_multiboot_info(&lib_sysinfo);
+#endif
+
+	/* Get information from the coreboot tables,
+	 * if they exist */
+
+	get_coreboot_info(&lib_sysinfo);
+
+	if (!lib_sysinfo.n_memranges) {
+		/* If we can't get a good memory range, use the default. */
+		lib_sysinfo.n_memranges = 2;
+
+		lib_sysinfo.memrange[0].base = 0;
+		lib_sysinfo.memrange[0].size = 640 * 1024;
+		lib_sysinfo.memrange[0].type = CB_MEM_RAM;
+
+		lib_sysinfo.memrange[1].base = 1024 * 1024;
+		lib_sysinfo.memrange[1].size = 31 * 1024 * 1024;
+		lib_sysinfo.memrange[1].type = CB_MEM_RAM;
+	}
+}
diff --git a/payloads/libpayload/arch/powerpc/timer.c b/payloads/libpayload/arch/powerpc/timer.c
new file mode 100644
index 0000000000..ba824b0d57
--- /dev/null
+++ b/payloads/libpayload/arch/powerpc/timer.c
@@ -0,0 +1,127 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 Advanced Micro Devices, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/**
+ * @file i386/timer.c
+ * i386 specific timer routines
+ */
+
+#include <libpayload.h>
+// #include <arch/rdtsc.h>
+
+/**
+ * @ingroup arch
+ * Global variable containing the speed of the processor in KHz.
+ */
+u32 cpu_khz;
+
+/**
+ * Calculate the speed of the processor for use in delays.
+ *
+ * @return The CPU speed in kHz.
+ */
+unsigned int get_cpu_speed(void)
+{
+#if 0
+	unsigned long long start, end;
+
+	/* Set up the PPC port - disable the speaker, enable the T2 gate. */
+	outb((inb(0x61) & ~0x02) | 0x01, 0x61);
+
+	/* Set the PIT to Mode 0, counter 2, word access. */
+	outb(0xB0, 0x43);
+
+	/* Load the counter with 0xffff. */
+	outb(0xff, 0x42);
+	outb(0xff, 0x42);
+
+	/* Read the number of ticks during the period. */
+	start = rdtsc();
+	while (!(inb(0x61) & 0x20)) ;
+	end = rdtsc();
+
+	/*
+	 * The clock rate is 1193180 Hz, the number of milliseconds for a
+	 * period of 0xffff is 1193180 / (0xFFFF * 1000) or .0182.
+	 * Multiply that by the number of measured clocks to get the kHz value.
+	 */
+	cpu_khz = (unsigned int)((end - start) * 1193180U / (1000 * 0xffff));
+#else
+	cpu_khz = 200 * 1024;
+#endif
+	return cpu_khz;
+}
+
+static inline void _delay(unsigned long long delta)
+{
+#if 0
+	unsigned long long timeout = rdtsc() + delta;
+	while (rdtsc() < timeout) ;
+#endif
+}
+
+/**
+ * Delay for a specified number of nanoseconds.
+ *
+ * @param n Number of nanoseconds to delay for.
+ */
+void ndelay(unsigned int n)
+{
+	_delay(n * cpu_khz / 1000000);
+}
+
+/**
+ * Delay for a specified number of microseconds.
+ *
+ * @param n Number of microseconds to delay for.
+ */
+void udelay(unsigned int n)
+{
+	_delay(n * cpu_khz / 1000);
+}
+
+/**
+ * Delay for a specified number of milliseconds.
+ *
+ * @param m Number of milliseconds to delay for.
+ */
+void mdelay(unsigned int m)
+{
+	_delay(m * cpu_khz);
+}
+
+/**
+ * Delay for a specified number of seconds.
+ *
+ * @param s Number of seconds to delay for.
+ */
+void delay(unsigned int s)
+{
+	_delay(s * cpu_khz * 1000);
+}
diff --git a/payloads/libpayload/arch/powerpc/util.S b/payloads/libpayload/arch/powerpc/util.S
new file mode 100644
index 0000000000..2905be7d8c
--- /dev/null
+++ b/payloads/libpayload/arch/powerpc/util.S
@@ -0,0 +1,40 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 Advanced Micro Devices, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+	.globl halt
+	.text
+	.align 4
+
+/* This function puts the system into a halt. */
+halt:
+#if 0
+	cli
+	hlt
+	jmp halt
+#endif
diff --git a/payloads/libpayload/arch/powerpc/virtual.c b/payloads/libpayload/arch/powerpc/virtual.c
new file mode 100644
index 0000000000..cff26117dc
--- /dev/null
+++ b/payloads/libpayload/arch/powerpc/virtual.c
@@ -0,0 +1,32 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 coresystems GmbH
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+
+unsigned long virtual_offset = 0;
+
diff --git a/payloads/libpayload/configs/defconfig b/payloads/libpayload/configs/defconfig
index 738d6c80bc..03c15fc9d1 100644
--- a/payloads/libpayload/configs/defconfig
+++ b/payloads/libpayload/configs/defconfig
@@ -1,13 +1,14 @@
 #
 # Automatically generated make config: don't edit
-# libpayload version: 0.1.0
-# Thu Sep 25 16:03:40 2008
+# libpayload version: 0.2.0
+# Thu May 21 12:01:39 2009
 #
-CONFIG_TARGET_I386=y
 
 #
 # Architecture Options
 #
+CONFIG_TARGET_I386=y
+# CONFIG_TARGET_POWERPC is not set
 # CONFIG_MULTIBOOT is not set
 
 #
diff --git a/payloads/libpayload/include/arch/endian.h b/payloads/libpayload/include/i386/arch/endian.h
index a50ac1fede..a50ac1fede 100644
--- a/payloads/libpayload/include/arch/endian.h
+++ b/payloads/libpayload/include/i386/arch/endian.h
diff --git a/payloads/libpayload/include/arch/io.h b/payloads/libpayload/include/i386/arch/io.h
index 31a8f88410..31a8f88410 100644
--- a/payloads/libpayload/include/arch/io.h
+++ b/payloads/libpayload/include/i386/arch/io.h
diff --git a/payloads/libpayload/include/arch/msr.h b/payloads/libpayload/include/i386/arch/msr.h
index c28b56cde1..c28b56cde1 100644
--- a/payloads/libpayload/include/arch/msr.h
+++ b/payloads/libpayload/include/i386/arch/msr.h
diff --git a/payloads/libpayload/include/arch/rdtsc.h b/payloads/libpayload/include/i386/arch/rdtsc.h
index 52f8c9c83c..52f8c9c83c 100644
--- a/payloads/libpayload/include/arch/rdtsc.h
+++ b/payloads/libpayload/include/i386/arch/rdtsc.h
diff --git a/payloads/libpayload/include/arch/types.h b/payloads/libpayload/include/i386/arch/types.h
index 1bd815bb44..1bd815bb44 100644
--- a/payloads/libpayload/include/arch/types.h
+++ b/payloads/libpayload/include/i386/arch/types.h
diff --git a/payloads/libpayload/include/arch/virtual.h b/payloads/libpayload/include/i386/arch/virtual.h
index 328c3aa34e..328c3aa34e 100644
--- a/payloads/libpayload/include/arch/virtual.h
+++ b/payloads/libpayload/include/i386/arch/virtual.h
diff --git a/payloads/libpayload/include/powerpc/arch/endian.h b/payloads/libpayload/include/powerpc/arch/endian.h
new file mode 100644
index 0000000000..8ffad70f0b
--- /dev/null
+++ b/payloads/libpayload/include/powerpc/arch/endian.h
@@ -0,0 +1,41 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 Advanced Micro Devices, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _ARCH_ENDIAN_H
+#define _ARCH_ENDIAN_H
+
+#include <arch/types.h>
+
+#define ntohw(in) (in)
+
+#define ntohl(in) (in)
+
+#define ntohll(in) (in)
+
+#endif
diff --git a/payloads/libpayload/include/powerpc/arch/io.h b/payloads/libpayload/include/powerpc/arch/io.h
new file mode 100644
index 0000000000..1676a8a119
--- /dev/null
+++ b/payloads/libpayload/include/powerpc/arch/io.h
@@ -0,0 +1,123 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 Advanced Micro Devices, Inc.
+ * Copyright (C) 2008-2009 coresystems GmbH
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _ARCH_IO_H
+#define _ARCH_IO_H
+
+extern uint32_t isa_io_base;
+
+#define readb(_a) (*(volatile unsigned char *) (_a))
+#define readw(_a) (*(volatile unsigned short *) (_a))
+#define readl(_a) (*(volatile unsigned long *) (_a))
+
+#define writeb(_v, _a) (*(volatile unsigned char *) (_a) = (_v))
+#define writew(_v, _a) (*(volatile unsigned short *) (_a) = (_v))
+#define writel(_v, _a) (*(volatile unsigned long *) (_a) = (_v))
+
+static inline unsigned long inl(int port)
+{
+	volatile unsigned char *addr = (volatile unsigned char *)(isa_io_base + port);
+	unsigned long val;
+	__asm__ __volatile__("lhbrx %0,0,%1; eieio":"=r"(val):
+			"r"(addr), "m"(*addr));
+	return val;
+}
+
+static inline unsigned short inw(int port)
+{
+	volatile unsigned char *addr = (volatile unsigned char *)(isa_io_base + port);
+	unsigned short val;
+	__asm__ __volatile__("lwbrx %0,0,%1; eieio":"=r"(val):"r"(addr), "m"(*addr));
+	return val;
+}
+
+static inline unsigned char inb(int port)
+{
+	volatile unsigned char *addr = (volatile unsigned char *)(isa_io_base + port);
+	unsigned char val;
+	__asm__ __volatile__("lbz%U1%X1 %0,%1; eieio":"=r"(val):"m"(*addr));
+	return val;
+}
+
+static inline void outl(unsigned long val, int port)
+{
+	volatile unsigned char *addr = (volatile unsigned char *)(isa_io_base + port);
+	__asm__ __volatile__("stb%U0%X0 %1,%0; eieio":"=m"(*addr):"r"(val));
+}
+
+static inline void outw(unsigned short val, int port)
+{
+	volatile unsigned char *addr = (volatile unsigned char *)(isa_io_base + port);
+	__asm__ __volatile__("sthbrx %1,0,%2; eieio":"=m"(*addr):"r"(val),"r"(addr));
+}
+
+static inline void outb(unsigned char val, int port)
+{
+	volatile unsigned char *addr = (volatile unsigned char *)(isa_io_base + port);
+	__asm__ __volatile__("stwbrx %1,0,%2; eieio":"=m"(*addr):"r"(val), "r"(addr));
+}
+
+static inline void outsl(int port, const void *addr, unsigned long count)
+{
+	volatile unsigned char *addr = (volatile unsigned char *)(isa_io_base + port);
+	//__asm__ __volatile__("rep; outsl" : "+S"(addr), "+c"(count) : "d"(port));
+}
+
+static inline void outsw(int port, const void *addr, unsigned long count)
+{
+	volatile unsigned char *addr = (volatile unsigned char *)(isa_io_base + port);
+	//__asm__ __volatile__("rep; outsw" : "+S"(addr), "+c"(count) : "d"(port));
+}
+
+static inline void outsb(int port, const void *addr, unsigned long count)
+{
+	volatile unsigned char *addr = (volatile unsigned char *)(isa_io_base + port);
+	//__asm__ __volatile__("rep; outsb" : "+S"(addr), "+c"(count) : "d"(port));
+}
+
+static inline void insl(int port, void *addr, unsigned long count)
+{
+	volatile unsigned char *addr = (volatile unsigned char *)(isa_io_base + port);
+	//__asm__ __volatile__("rep; insl" : "+D"(addr), "+c"(count) : "d"(port));
+}
+
+static inline void insw(int port, void *addr, unsigned long count)
+{
+	volatile unsigned char *addr = (volatile unsigned char *)(isa_io_base + port);
+	//__asm__ __volatile__("rep; insw" : "+D"(addr), "+c"(count) : "d"(port));
+}
+
+static inline void insb(int port, void *addr, unsigned long count)
+{
+	volatile unsigned char *addr = (volatile unsigned char *)(isa_io_base + port);
+	//__asm__ __volatile__("rep; insb" : "+D"(addr), "+c"(count) : "d"(port));
+}
+
+#endif
diff --git a/payloads/libpayload/include/powerpc/arch/types.h b/payloads/libpayload/include/powerpc/arch/types.h
new file mode 100644
index 0000000000..1bd815bb44
--- /dev/null
+++ b/payloads/libpayload/include/powerpc/arch/types.h
@@ -0,0 +1,60 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2007 Uwe Hermann <uwe@hermann-uwe.de>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _ARCH_TYPES_H
+#define _ARCH_TYPES_H
+
+typedef unsigned char uint8_t;
+typedef unsigned char u8;
+typedef signed char int8_t;
+typedef signed char s8;
+
+typedef unsigned short uint16_t;
+typedef unsigned short u16;
+typedef signed short int16_t;
+typedef signed short s16;
+
+typedef unsigned int uint32_t;
+typedef unsigned int u32;
+typedef signed int int32_t;
+typedef signed int s32;
+
+typedef unsigned long long uint64_t;
+typedef unsigned long long u64;
+typedef signed long long int64_t;
+typedef signed long long s64;
+
+typedef long time_t;
+typedef long suseconds_t;
+
+#ifndef NULL
+#define NULL ((void *)0)
+#endif
+
+#endif
diff --git a/payloads/libpayload/include/powerpc/arch/virtual.h b/payloads/libpayload/include/powerpc/arch/virtual.h
new file mode 100644
index 0000000000..328c3aa34e
--- /dev/null
+++ b/payloads/libpayload/include/powerpc/arch/virtual.h
@@ -0,0 +1,41 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright (C) 2008 coresystems GmbH
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _ARCH_VIRTUAL_H
+#define _ARCH_VIRTUAL_H
+
+extern unsigned long virtual_offset;
+
+#define virt_to_phys(virt) ((unsigned long) (virt) + virtual_offset)
+#define phys_to_virt(phys) ((void *) ((unsigned long) (phys) - virtual_offset))
+
+#define virt_to_bus(addr) virt_to_phys(addr)
+#define bus_to_virt(addr) phys_to_virt(addr)
+
+#endif
diff --git a/payloads/libpayload/libc/malloc.c b/payloads/libpayload/libc/malloc.c
index 24daf0e680..d18b289adf 100644
--- a/payloads/libpayload/libc/malloc.c
+++ b/payloads/libpayload/libc/malloc.c
@@ -103,16 +103,22 @@ static void *alloc(int len)
 				void *nptr = ptr + (HDRSIZE + len);
 				int nsize = size - (HDRSIZE + len);
 
-				/* Mark the block as used. */
-				*((hdrtype_t *) ptr) = USED_BLOCK(len);
-
 				/* If there is still room in this block,
-				 * then mark it as such.
+				 * then mark it as such otherwise account
+				 * the whole space for that block.
 				 */
 
-				if (nsize > 0)
+				if (nsize > 0) {
+					/* Mark the block as used. */
+					*((hdrtype_t *) ptr) = USED_BLOCK(len);
+
+					/* Create a new free block. */
 					*((hdrtype_t *) nptr) =
 					    FREE_BLOCK(nsize);
+				} else {
+					/* Mark the block as used. */
+					*((hdrtype_t *) ptr) = USED_BLOCK(size);
+				}
 
 				return (void *)(ptr + HDRSIZE);
 			}
diff --git a/payloads/libpayload/libc/time.c b/payloads/libpayload/libc/time.c
index 2d19bd173f..67675623a4 100644
--- a/payloads/libpayload/libc/time.c
+++ b/payloads/libpayload/libc/time.c
@@ -34,7 +34,9 @@
 
 #include <libpayload-config.h>
 #include <libpayload.h>
+#ifdef CONFIG_TARGET_I386
 #include <arch/rdtsc.h>
+#endif
 
 extern u32 cpu_khz;
 
@@ -47,6 +49,7 @@ static struct {
 #define TICKS_PER_SEC (cpu_khz * 1000)
 #define TICKS_PER_USEC (cpu_khz / 1000)
 
+#ifdef CONFIG_TARGET_I386
 static void update_clock(void)
 {
 	u64 delta = rdtsc() - clock.ticks;
@@ -114,7 +117,16 @@ static void gettimeofday_init(void)
 	clock.ticks = rdtsc();
 }
 #endif
+#endif
+#ifdef CONFIG_TARGET_POWERPC
+static void update_clock(void)
+{
+}
 
+static void gettimeofday_init(void)
+{
+}
+#endif
 /**
  * Return the current time broken into a timeval structure.
  *