Re: [PATCH] i386-qemu port

[Robert Millan <rmh@aybabtu.com>]

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New patch, after a bunch of misc cleanup, turning hardcoded numbers into
macros, improving comments, etc.

-- 
Robert Millan

  The DRM opt-in fallacy: "Your data belongs to us. We will decide when (and
  how) you may access your data; but nobody's threatening your freedom: we
  still allow you to remove your data and not access it at all."

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Index: conf/i386-qemu.rmk
===================================================================
--- conf/i386-qemu.rmk	(revision 0)
+++ conf/i386-qemu.rmk	(revision 0)
@@ -0,0 +1,2 @@
+# -*- makefile -*-
+include $(srcdir)/conf/i386-coreboot.mk
Index: conf/i386-coreboot.rmk
===================================================================
--- conf/i386-coreboot.rmk	(revision 2354)
+++ conf/i386-coreboot.rmk	(working copy)
@@ -8,10 +8,11 @@
 script/sh/lexer.c_DEPENDENCIES = grub_script.tab.h
 
 # Images.
-pkglib_PROGRAMS = kernel.elf
 
-# For kernel.elf.
-kernel_elf_SOURCES = kern/i386/coreboot/startup.S \
+ifeq ($(platform), coreboot)
+
+pkglib_PROGRAMS += kernel.img
+kernel_img_SOURCES = kern/i386/coreboot/startup.S \
 	kern/i386/coreboot/init.c \
 	kern/i386/multiboot_mmap.c \
 	kern/main.c kern/device.c \
@@ -26,22 +27,66 @@
 	kern/env.c \
 	term/i386/pc/vga_text.c term/i386/vga_common.c \
 	symlist.c
-kernel_elf_HEADERS = boot.h cache.h device.h disk.h dl.h elf.h elfload.h \
+kernel_img_HEADERS = boot.h cache.h device.h disk.h dl.h elf.h elfload.h \
 	env.h err.h file.h fs.h kernel.h loader.h misc.h mm.h net.h parser.h \
 	partition.h pc_partition.h reader.h symbol.h term.h time.h types.h \
 	machine/boot.h machine/console.h machine/init.h \
 	machine/memory.h machine/loader.h list.h handler.h command.h
-kernel_elf_CFLAGS = $(COMMON_CFLAGS)
-kernel_elf_ASFLAGS = $(COMMON_ASFLAGS)
-kernel_elf_LDFLAGS = $(COMMON_LDFLAGS) -Wl,-N,-S,-Ttext,0x8200,-Bstatic
+kernel_img_CFLAGS = $(COMMON_CFLAGS)
+kernel_img_ASFLAGS = $(COMMON_ASFLAGS)
+kernel_img_LDFLAGS = $(COMMON_LDFLAGS) -Wl,-N,-S,-Ttext,0x8200,-Bstatic
 
+endif
+
+ifeq ($(platform), qemu)
+
+GRUB_MEMORY_MACHINE_LINK_ADDR = 0x8200
+
+pkglib_IMAGES += boot.img
+boot_img_SOURCES = boot/i386/qemu/boot.S
+boot_img_ASFLAGS = $(COMMON_ASFLAGS)
+boot_img_LDFLAGS = $(COMMON_LDFLAGS) $(TARGET_IMG_LDFLAGS)0xffe00
+boot_img_FORMAT = binary
+
+bin_UTILITIES += grub-mkrawimage
+grub_mkrawimage_SOURCES = util/i386/pc/grub-mkimage.c util/misc.c \
+	util/resolve.c
+grub_mkrawimage_CFLAGS = -DGRUB_MEMORY_MACHINE_LINK_ADDR=$(GRUB_MEMORY_MACHINE_LINK_ADDR)
+
+pkglib_IMAGES += kernel.img
+kernel_img_SOURCES = kern/i386/qemu/startup.S \
+	kern/i386/coreboot/init.c \
+	kern/i386/qemu/mmap.c \
+	kern/main.c kern/device.c \
+	kern/disk.c kern/dl.c kern/file.c kern/fs.c kern/err.c \
+	kern/misc.c kern/mm.c kern/reader.c kern/term.c \
+	kern/rescue_parser.c kern/rescue_reader.c \
+	kern/time.c kern/list.c kern/handler.c kern/command.c kern/corecmd.c \
+	kern/i386/dl.c kern/parser.c kern/partition.c \
+	kern/i386/tsc.c kern/i386/pit.c \
+	kern/generic/rtc_get_time_ms.c \
+	kern/generic/millisleep.c \
+	kern/env.c \
+	term/i386/pc/vga_text.c term/i386/vga_common.c \
+	symlist.c
+kernel_img_HEADERS = boot.h cache.h device.h disk.h dl.h elf.h elfload.h \
+	env.h err.h file.h fs.h kernel.h loader.h misc.h mm.h net.h parser.h \
+	partition.h pc_partition.h reader.h symbol.h term.h time.h types.h \
+	machine/boot.h machine/console.h machine/init.h \
+	machine/memory.h machine/loader.h list.h handler.h command.h
+kernel_img_CFLAGS = $(COMMON_CFLAGS)
+kernel_img_ASFLAGS = $(COMMON_ASFLAGS) -DGRUB_MEMORY_MACHINE_LINK_ADDR=$(GRUB_MEMORY_MACHINE_LINK_ADDR)
+kernel_img_LDFLAGS = $(COMMON_LDFLAGS) $(TARGET_IMG_LDFLAGS)$(GRUB_MEMORY_MACHINE_LINK_ADDR)
+kernel_img_FORMAT = binary
+endif
+
 MOSTLYCLEANFILES += symlist.c kernel_syms.lst
 DEFSYMFILES += kernel_syms.lst
 
-symlist.c: $(addprefix include/grub/,$(kernel_elf_HEADERS)) config.h gensymlist.sh
+symlist.c: $(addprefix include/grub/,$(kernel_img_HEADERS)) config.h gensymlist.sh
 	/bin/sh gensymlist.sh $(filter %.h,$^) > $@ || (rm -f $@; exit 1)
 
-kernel_syms.lst: $(addprefix include/grub/,$(kernel_elf_HEADERS)) config.h genkernsyms.sh
+kernel_syms.lst: $(addprefix include/grub/,$(kernel_img_HEADERS)) config.h genkernsyms.sh
 	/bin/sh genkernsyms.sh $(filter %.h,$^) > $@ || (rm -f $@; exit 1)
 
 # Utilities.
Index: kern/i386/qemu/startup.S
===================================================================
--- kern/i386/qemu/startup.S	(revision 0)
+++ kern/i386/qemu/startup.S	(revision 0)
@@ -0,0 +1,108 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 1999,2000,2001,2002,2003,2005,2006,2007,2008,2009 Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <grub/symbol.h>
+#include <grub/machine/memory.h>
+#include <grub/machine/kernel.h>
+
+	.text
+	.code32
+	.globl _start
+_start:
+	jmp codestart
+
+	. = _start + GRUB_KERNEL_MACHINE_TOTAL_MODULE_SIZE
+VARIABLE(grub_total_module_size)
+	.long	0
+VARIABLE(grub_kernel_image_size)
+	.long	0
+VARIABLE(grub_prefix)
+	/* to be filled by grub-mkimage */
+
+	/*
+	 *  Leave some breathing room for the prefix.
+	 */
+
+	. = _start + GRUB_KERNEL_MACHINE_DATA_END
+
+codestart:
+	/* Relocate to low memory.  First we figure out our location.
+	   We will derive the rom start address and size from it.  */
+	call	1f
+1:	popl	%esi
+
+	/* We know rom size is a multiple of 64 kiB.  */
+	xorw	%si, %si
+
+	/* And it spans untill top of memory.  */
+	movl	%esi, %ecx
+	negl	%ecx
+
+	movl	$GRUB_MEMORY_MACHINE_LINK_ADDR, %edi
+	cld
+	rep
+	movsb
+	ljmp $GRUB_MEMORY_MACHINE_PROT_MODE_CSEG, $1f
+1:
+
+	/* copy modules before cleaning out the bss */
+	movl	EXT_C(grub_total_module_size), %ecx
+	movl	EXT_C(grub_kernel_image_size), %esi
+	addl	%ecx, %esi
+	addl	$_start, %esi
+	decl	%esi
+	movl	$END_SYMBOL, %edi
+	addl	%ecx, %edi
+	decl	%edi
+	std
+	rep
+	movsb
+
+#ifdef APPLE_CC
+	/* clean out the bss */
+	bss_start_abs = ABS (bss_start)
+	bss_end_abs = ABS (bss_end)
+
+	movl    bss_start_abs, %edi
+
+	/* compute the bss length */
+	movl	bss_end_abs, %ecx
+	subl	%edi, %ecx
+#else
+	/* clean out the bss */
+	movl	$BSS_START_SYMBOL, %edi
+
+	/* compute the bss length */
+	movl	$END_SYMBOL, %ecx
+	subl	%edi, %ecx
+#endif
+			
+	/* clean out */
+	xorl	%eax, %eax
+	cld
+	rep
+	stosb
+
+	/*
+	 *  Call the start of main body of C code.
+	 */
+	call EXT_C(grub_main)
+
+	/* This should never happen.  */
+	jmp EXT_C(grub_stop)
Index: kern/i386/qemu/mmap.c
===================================================================
--- kern/i386/qemu/mmap.c	(revision 0)
+++ kern/i386/qemu/mmap.c	(revision 0)
@@ -0,0 +1,71 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2009  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/machine/init.h>
+#include <grub/machine/memory.h>
+#include <grub/machine/boot.h>
+#include <grub/types.h>
+#include <grub/err.h>
+#include <grub/misc.h>
+#include <grub/i386/cmos.h>
+
+#define QEMU_CMOS_MEMSIZE_HIGH		0x35
+#define QEMU_CMOS_MEMSIZE_LOW		0x34
+
+#define min(a,b)	((a) > (b) ? (b) : (a))
+
+grub_size_t grub_lower_mem, grub_upper_mem;
+
+grub_uint64_t mem_size;
+
+void
+grub_machine_mmap_init ()
+{
+  mem_size = grub_cmos_read (QEMU_CMOS_MEMSIZE_HIGH) << 24 | grub_cmos_read (QEMU_CMOS_MEMSIZE_LOW) << 16;
+
+  /* Don't ask... */
+  mem_size += (16 * 1024 * 1024);
+}
+
+grub_err_t
+grub_machine_mmap_iterate (int NESTED_FUNC_ATTR (*hook) (grub_uint64_t, grub_uint64_t, grub_uint32_t))
+{
+  /* This trashes the video bios, but for now we don't use it.  */
+  if (hook (0, 0x100000 - GRUB_BOOT_MACHINE_SIZE, GRUB_MACHINE_MEMORY_AVAILABLE))
+    return 1;
+
+  /* Protect boot.img, which contains the gdt.  It is mapped below 0x100000 ... */
+  if (hook (0x100000 - GRUB_BOOT_MACHINE_SIZE,
+	    GRUB_BOOT_MACHINE_SIZE,
+	    GRUB_MACHINE_MEMORY_RESERVED))
+    return 1;
+
+  /* ... and to the top of memory.  */
+  if (hook ((grub_uint32_t) -GRUB_BOOT_MACHINE_SIZE,
+	    GRUB_BOOT_MACHINE_SIZE,
+	    GRUB_MACHINE_MEMORY_RESERVED))
+    return 1;
+
+  /* Everything else is free.  */
+  if (hook (0x100000,
+	    min (mem_size, (grub_uint32_t) -GRUB_BOOT_MACHINE_SIZE) - 0x100000,
+	    GRUB_MACHINE_MEMORY_AVAILABLE))
+    return 1;
+
+  return 0;
+}
Index: kern/i386/coreboot/startup.S
===================================================================
--- kern/i386/coreboot/startup.S	(revision 2354)
+++ kern/i386/coreboot/startup.S	(working copy)
@@ -78,14 +78,6 @@
 	jmp EXT_C(grub_main)
 
 /*
- *  This call is special...  it never returns...  in fact it should simply
- *  hang at this point!
- */
-FUNCTION(grub_stop)
-	hlt
-	jmp EXT_C(grub_stop)
-
-/*
  *  prot_to_real and associated structures (but NOT real_to_prot, that is
  *  only needed for BIOS gates).
  */
Index: kern/i386/coreboot/init.c
===================================================================
--- kern/i386/coreboot/init.c	(revision 2354)
+++ kern/i386/coreboot/init.c	(working copy)
@@ -50,6 +50,17 @@
   grub_fatal ("grub_get_rtc() is not implemented.\n");
 }
 
+/*
+ *  This call is special...  it never returns...  in fact it should simply
+ *  hang at this point!
+ */
+void
+grub_stop ()
+{
+  while (1)
+    __asm__ ("hlt");
+}
+
 /* Stop the floppy drive from spinning, so that other software is
    jumped to with a known state.  */
 void
@@ -144,5 +155,6 @@
 grub_addr_t
 grub_arch_modules_addr (void)
 {
-  return ALIGN_UP((grub_addr_t) _end, GRUB_MOD_ALIGN);
+//  return ALIGN_UP((grub_addr_t) _end, GRUB_MOD_ALIGN);
+  return _end;
 }
Index: boot/i386/qemu/boot.S
===================================================================
--- boot/i386/qemu/boot.S	(revision 0)
+++ boot/i386/qemu/boot.S	(revision 0)
@@ -0,0 +1,113 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 1999,2000,2001,2002,2003,2005,2006,2007,2008,2009 Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <grub/symbol.h>
+#include <grub/machine/memory.h>
+#include <grub/machine/boot.h>
+#include <grub/machine/kernel.h>
+
+	.text
+	.code16
+	.globl _start
+_start:
+	/* Disable interrupts.  */
+	cli
+
+	jmp 1f
+
+	. = _start + GRUB_BOOT_MACHINE_CORE_ENTRY_ADDR
+VARIABLE(grub_core_entry_addr)
+	.long	0
+1:
+
+	/* Process VGA rom.  */
+	call	$0xc000, $0x3
+
+	/* Set up %ds, %ss, and %es.  */
+	xorw	%ax, %ax
+	movw	%ax, %ds
+	movw	%ax, %ss
+	movw	%ax, %es
+
+	/* Set up the real mode stack.  */
+	movl	$GRUB_MEMORY_MACHINE_REAL_STACK, %esp
+
+	/* Transition to protected mode.  We use pushl to force generation
+	   of a flat return address.  */
+	pushl	$1f
+	DATA32	jmp real_to_prot
+	.code32
+1:
+	movl	grub_core_entry_addr, %edx
+	jmp	*%edx
+
+#include "kern/i386/realmode.S"
+
+real_to_prot:
+	.code16
+	cli
+
+	/* load the GDT register */
+	DATA32	ADDR32	lgdt	%cs:((0x10000 - GRUB_BOOT_MACHINE_SIZE) + (gdtdesc - _start))
+
+	/* turn on protected mode */
+	movl	%cr0, %eax
+	orl	$GRUB_MEMORY_MACHINE_CR0_PE_ON, %eax
+	movl	%eax, %cr0
+
+	DATA32	ljmp $GRUB_MEMORY_MACHINE_PROT_MODE_CSEG, $protcseg
+
+	.code32
+	.align 4
+protcseg:
+	cli
+
+	/* reload other segment registers */
+	movw	$GRUB_MEMORY_MACHINE_PROT_MODE_DSEG, %ax
+	movw	%ax, %ds
+	movw	%ax, %es
+	movw	%ax, %fs
+	movw	%ax, %gs
+	movw	%ax, %ss
+
+	/* put the return address in a known safe location */
+	movl	(%esp), %eax
+	movl	%eax, GRUB_MEMORY_MACHINE_REAL_STACK
+
+	/* get protected mode stack */
+	movl	$GRUB_MEMORY_MACHINE_PROT_STACK, %eax
+	movl	%eax, %esp
+	movl	%eax, %ebp
+
+	/* get return address onto the right stack */
+	movl	GRUB_MEMORY_MACHINE_REAL_STACK, %eax
+	movl	%eax, (%esp)
+
+	/* zero %eax */
+	xorl	%eax, %eax
+
+	/* return on the old (or initialized) stack! */
+	ret
+
+	/* Intel, in its infinite wisdom, decided to put the i8086 entry point
+	   *right here*, and this is why we need this kludge.  */
+	. = GRUB_BOOT_MACHINE_SIZE - 16
+entry:
+	jmp _start
+	. = GRUB_BOOT_MACHINE_SIZE
Index: configure.ac
===================================================================
--- configure.ac	(revision 2354)
+++ configure.ac	(working copy)
@@ -85,6 +85,7 @@
   i386-coreboot) ;;
   i386-linuxbios) platform=coreboot ;;
   i386-ieee1275) ;;
+  i386-qemu) ;;
   powerpc-ieee1275) ;;
   sparc64-ieee1275) ;;
   *) AC_MSG_ERROR([platform "$platform" is not supported for target CPU "$target_cpu"]) ;;
Index: include/grub/i386/qemu/time.h
===================================================================
--- include/grub/i386/qemu/time.h	(revision 0)
+++ include/grub/i386/qemu/time.h	(revision 0)
@@ -0,0 +1 @@
+#include <grub/i386/coreboot/time.h>
Index: include/grub/i386/qemu/serial.h
===================================================================
--- include/grub/i386/qemu/serial.h	(revision 0)
+++ include/grub/i386/qemu/serial.h	(revision 0)
@@ -0,0 +1 @@
+#include <grub/i386/coreboot/serial.h>
Index: include/grub/i386/qemu/kernel.h
===================================================================
--- include/grub/i386/qemu/kernel.h	(revision 0)
+++ include/grub/i386/qemu/kernel.h	(revision 0)
@@ -0,0 +1,51 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2005,2006,2007,2008,2009  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_KERNEL_MACHINE_HEADER
+#define GRUB_KERNEL_MACHINE_HEADER	1
+
+/* The offset of GRUB_TOTAL_MODULE_SIZE.  */
+#define GRUB_KERNEL_MACHINE_TOTAL_MODULE_SIZE	0x8
+
+/* The offset of GRUB_KERNEL_IMAGE_SIZE.  */
+#define GRUB_KERNEL_MACHINE_KERNEL_IMAGE_SIZE	0xc
+
+/* The offset of GRUB_PREFIX.  */
+#define GRUB_KERNEL_MACHINE_PREFIX		0x10
+
+/* End of the data section. */
+#define GRUB_KERNEL_MACHINE_DATA_END		0x50
+
+#ifndef ASM_FILE
+
+#include <grub/symbol.h>
+#include <grub/types.h>
+
+/* The size of kernel image.  */
+extern grub_int32_t grub_kernel_image_size;
+
+/* The total size of module images following the kernel.  */
+extern grub_int32_t grub_total_module_size;
+
+/* The prefix which points to the directory where GRUB modules and its
+   configuration file are located.  */
+extern char grub_prefix[];
+
+#endif /* ! ASM_FILE */
+
+#endif /* ! GRUB_KERNEL_MACHINE_HEADER */
Index: include/grub/i386/qemu/console.h
===================================================================
--- include/grub/i386/qemu/console.h	(revision 0)
+++ include/grub/i386/qemu/console.h	(revision 0)
@@ -0,0 +1 @@
+#include <grub/i386/coreboot/console.h>
Index: include/grub/i386/qemu/boot.h
===================================================================
--- include/grub/i386/qemu/boot.h	(revision 0)
+++ include/grub/i386/qemu/boot.h	(revision 0)
@@ -0,0 +1,29 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2009  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_BOOT_MACHINE_HEADER
+#define GRUB_BOOT_MACHINE_HEADER	1
+
+/* The size of boot.img.  */
+#define GRUB_BOOT_MACHINE_SIZE			0x200
+
+/* The offset of GRUB_CORE_ENTRY_ADDR.  */
+#define GRUB_BOOT_MACHINE_CORE_ENTRY_ADDR	0x8
+
+
+#endif
Index: include/grub/i386/qemu/init.h
===================================================================
--- include/grub/i386/qemu/init.h	(revision 0)
+++ include/grub/i386/qemu/init.h	(revision 0)
@@ -0,0 +1 @@
+#include <grub/i386/coreboot/init.h>
Index: include/grub/i386/qemu/machine.h
===================================================================
--- include/grub/i386/qemu/machine.h	(revision 0)
+++ include/grub/i386/qemu/machine.h	(revision 0)
@@ -0,0 +1,24 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2009  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_MACHINE_MACHINE_HEADER
+#define GRUB_MACHINE_MACHINE_HEADER	1
+
+#define GRUB_MACHINE_QEMU	1
+
+#endif /* ! GRUB_MACHINE_MACHINE_HEADER */
Index: include/grub/i386/qemu/loader.h
===================================================================
--- include/grub/i386/qemu/loader.h	(revision 0)
+++ include/grub/i386/qemu/loader.h	(revision 0)
@@ -0,0 +1 @@
+#include <grub/cpu/loader.h>
Index: include/grub/i386/qemu/memory.h
===================================================================
--- include/grub/i386/qemu/memory.h	(revision 0)
+++ include/grub/i386/qemu/memory.h	(revision 0)
@@ -0,0 +1,45 @@
+/* memory.h - describe the memory map */
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2002,2007  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _GRUB_MEMORY_MACHINE_HEADER
+#define _GRUB_MEMORY_MACHINE_HEADER      1
+
+#include <grub/symbol.h>
+#include <grub/i386/pc/memory.h>
+
+#ifndef ASM_FILE
+#include <grub/err.h>
+#include <grub/types.h>
+#endif
+
+#define GRUB_MEMORY_MACHINE_LOWER_USABLE		0x9fc00		/* 640 kiB - 1 kiB */
+
+#define GRUB_MEMORY_MACHINE_UPPER_START			0x100000	/* 1 MiB */
+#define GRUB_MEMORY_MACHINE_LOWER_SIZE			GRUB_MEMORY_MACHINE_UPPER_START
+
+#ifndef ASM_FILE
+
+void grub_machine_mmap_init (void);
+
+grub_err_t EXPORT_FUNC(grub_machine_mmap_iterate)
+     (int NESTED_FUNC_ATTR (*hook) (grub_uint64_t, grub_uint64_t, grub_uint32_t));
+
+#endif
+
+#endif /* ! _GRUB_MEMORY_MACHINE_HEADER */
Index: include/grub/i386/coreboot/kernel.h
===================================================================
--- include/grub/i386/coreboot/kernel.h	(revision 2354)
+++ include/grub/i386/coreboot/kernel.h	(working copy)
@@ -1,6 +1,6 @@
 /*
  *  GRUB  --  GRand Unified Bootloader
- *  Copyright (C) 2005,2006,2007,2008  Free Software Foundation, Inc.
+ *  Copyright (C) 2005,2006,2007,2008,2009  Free Software Foundation, Inc.
  *
  *  GRUB is free software: you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -19,10 +19,33 @@
 #ifndef GRUB_KERNEL_MACHINE_HEADER
 #define GRUB_KERNEL_MACHINE_HEADER	1
 
+/* The offset of GRUB_TOTAL_MODULE_SIZE.  */
+#define GRUB_KERNEL_MACHINE_TOTAL_MODULE_SIZE	0x8
+
+/* The offset of GRUB_KERNEL_IMAGE_SIZE.  */
+#define GRUB_KERNEL_MACHINE_KERNEL_IMAGE_SIZE	0xc
+
+/* The offset of GRUB_PREFIX.  */
+#define GRUB_KERNEL_MACHINE_PREFIX		0x10
+
+/* End of the data section. */
+#define GRUB_KERNEL_MACHINE_DATA_END		0x50
+
+#ifndef ASM_FILE
+
 #include <grub/symbol.h>
+#include <grub/types.h>
 
-#ifndef ASM_FILE
+/* The size of kernel image.  */
+extern grub_int32_t grub_kernel_image_size;
+
+/* The total size of module images following the kernel.  */
+extern grub_int32_t grub_total_module_size;
+
+/* The prefix which points to the directory where GRUB modules and its
+   configuration file are located.  */
 extern char grub_prefix[];
-#endif
 
+#endif /* ! ASM_FILE */
+
 #endif /* ! GRUB_KERNEL_MACHINE_HEADER */
Index: util/i386/pc/grub-mkimage.c
===================================================================
--- util/i386/pc/grub-mkimage.c	(revision 2354)
+++ util/i386/pc/grub-mkimage.c	(working copy)
@@ -124,6 +124,17 @@
   *core_size += GRUB_KERNEL_MACHINE_RAW_SIZE;
 }
 
+#else
+
+static void
+compress_kernel (char *kernel_img, size_t kernel_size,
+               char **core_img, size_t *core_size)
+{
+  *core_img = xmalloc (kernel_size);
+  memcpy (*core_img, kernel_img, kernel_size);
+  *core_size = kernel_size;
+}
+
 #endif
 
 static void
@@ -237,6 +248,8 @@
   if (num > 0xffff)
     grub_util_error ("the core image is too big");
 
+#if defined(GRUB_MACHINE_PCBIOS)
+
   boot_path = grub_util_get_path (dir, "diskboot.img");
   boot_size = grub_util_get_image_size (boot_path);
   if (boot_size != GRUB_DISK_SECTOR_SIZE)
@@ -253,13 +266,48 @@
   free (boot_img);
   free (boot_path);
 
+#elif defined(GRUB_MACHINE_QEMU)
+
+  {
+    char *rom_img;
+    size_t rom_size;
+
+    boot_path = grub_util_get_path (dir, "boot.img");
+    boot_size = grub_util_get_image_size (boot_path);
+    boot_img = grub_util_read_image (boot_path);
+
+    /* Rom sizes must be 64k-aligned.  */
+    rom_size = ALIGN_UP (core_size + boot_size, 64 * 1024);
+
+    rom_img = xmalloc (rom_size);
+    memset (rom_img, 0, rom_size);
+
+    memcpy (rom_img, core_img, core_size);
+
+    *((grub_int32_t *) (boot_img + GRUB_BOOT_MACHINE_CORE_ENTRY_ADDR))
+      = grub_cpu_to_le32 ((grub_uint32_t) -rom_size);
+
+    memcpy (rom_img + rom_size - boot_size, boot_img, boot_size);
+    
+    free (core_img);
+    core_img = rom_img;
+    core_size = rom_size;
+    
+    free (boot_img);
+    free (boot_path);
+  }
+#endif
+
   *((grub_uint32_t *) (core_img + GRUB_KERNEL_MACHINE_TOTAL_MODULE_SIZE))
     = grub_cpu_to_le32 (total_module_size);
   *((grub_uint32_t *) (core_img + GRUB_KERNEL_MACHINE_KERNEL_IMAGE_SIZE))
     = grub_cpu_to_le32 (kernel_size);
+#ifdef GRUB_KERNEL_MACHINE_COMPRESSED_SIZE
   *((grub_uint32_t *) (core_img + GRUB_KERNEL_MACHINE_COMPRESSED_SIZE))
     = grub_cpu_to_le32 (core_size - GRUB_KERNEL_MACHINE_RAW_SIZE);
+#endif
 
+#if defined(GRUB_KERNEL_MACHINE_INSTALL_DOS_PART) && defined(GRUB_KERNEL_MACHINE_INSTALL_BSD_PART)
   /* If we included a drive in our prefix, let GRUB know it doesn't have to
      prepend the drive told by BIOS.  */
   if (prefix[0] == '(')
@@ -269,6 +317,7 @@
       *((grub_int32_t *) (core_img + GRUB_KERNEL_MACHINE_INSTALL_BSD_PART))
 	= grub_cpu_to_le32 (-2);
     }
+#endif
 
   if (GRUB_MEMORY_MACHINE_LINK_ADDR + core_size > GRUB_MEMORY_MACHINE_UPPER)
     grub_util_error ("Core image is too big (%p > %p)\n",