vbatts/grub
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

2005-01-04 Hollis Blanchard <hollis@penguinppc.org>

Browse source 
* TODO: Add note about endianness in grub-mkimage.
	* boot/powerpc/ieee1275/crt0.S (note): Remove unused .note
	section.
	* conf/powerpc-ieee1275.rmk (bin_UTILITIES): Add grub-mkimage.
	(grub_mkimage_SOURCES): New target.
	* include/grub/kernel.h (grub_start_addr): Remove variable.
	(grub_end_addr): Likewise.
	(grub_total_module_size): Likewise.
	(grub_kernel_image_size): Likewise.
	(GRUB_MODULE_MAGIC): New constant.
	(grub_module_info): New structure.
	(grub_arch_modules_addr): New prototype.
	(grub_get_end_addr): Remove prototype.
	* include/grub/i386/pc/kernel.h (grub_end_addr): New prototype.
	* include/grub/powerpc/ieee1275/kernel.h: New file.
	* include/grub/util/misc.h (grub_util_get_fp_size): New
	prototype.
	(grub_util_read_at): Likewise.
	(grub_util_write_image_at): Likewise.
	* kern/main.c (grub_get_end_addr): Remove function.
	(grub_load_modules): Call grub_arch_modules_addr instead of using
	grub_end_addr.  Look for a grub_module_info struct in memory.  Use
	the grub_module_info fields instead of calling grub_get_end_addr
	as loop conditions.  Move grub_add_unused_region code here.
	(grub_add_unused_region): Remove function.
	* kern/i386/pc/init.c: Include grub/cache.h.
	(grub_machine_init): Remove call to grub_get_end_addr.  Remove
	one call to add_mem_region.
	(grub_arch_modules_addr): New function.
	* kern/powerpc/ieee1275/init.c (grub_end_addr): Remove variable.
	(grub_total_module_size): Likewise.
	Include grub/machine/kernel.h.
	(grub_arch_modules_addr): New function.
	* util/grub-emu.c (grub_end_addr): Remove variable.
	(grub_total_module_size): Likewise.
	(grub_arch_modules_addr): New function.
	* util/misc.c: Include unistd.h.
	(grub_util_get_fp_size): New function.
	(grub_util_read_at): Likewise.
	(grub_util_write_image_at): Likewise.
	(grub_util_read_image): Call grub_util_read_at.
	(grub_util_write_image): Call grub_util_write_image_at.
	* util/i386/pc/grub-mkimage.c (generate_image): Allocate
	additional memory in kernel_img for a struct grub_module_info.
	Fill in that grub_module_info.
	* util/powerpc/ieee1275/grub-mkimage.c: New file.
This commit is contained in:
marco_g 2005-01-04 14:01:45 +00:00
parent 458786f8fc
commit 0b412211b3
15 changed files with 488 additions and 70 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

49
ChangeLog
View file

@ -1,3 +1,52 @@
2005-01-04 Hollis Blanchard <hollis@penguinppc.org>
* TODO: Add note about endianness in grub-mkimage.
* boot/powerpc/ieee1275/crt0.S (note): Remove unused .note
section.
* conf/powerpc-ieee1275.rmk (bin_UTILITIES): Add grub-mkimage.
(grub_mkimage_SOURCES): New target.
* include/grub/kernel.h (grub_start_addr): Remove variable.
(grub_end_addr): Likewise.
(grub_total_module_size): Likewise.
(grub_kernel_image_size): Likewise.
(GRUB_MODULE_MAGIC): New constant.
(grub_module_info): New structure.
(grub_arch_modules_addr): New prototype.
(grub_get_end_addr): Remove prototype.
* include/grub/i386/pc/kernel.h (grub_end_addr): New prototype.
* include/grub/powerpc/ieee1275/kernel.h: New file.
* include/grub/util/misc.h (grub_util_get_fp_size): New
prototype.
(grub_util_read_at): Likewise.
(grub_util_write_image_at): Likewise.
* kern/main.c (grub_get_end_addr): Remove function.
(grub_load_modules): Call grub_arch_modules_addr instead of using
grub_end_addr. Look for a grub_module_info struct in memory. Use
the grub_module_info fields instead of calling grub_get_end_addr
as loop conditions. Move grub_add_unused_region code here.
(grub_add_unused_region): Remove function.
* kern/i386/pc/init.c: Include grub/cache.h.
(grub_machine_init): Remove call to grub_get_end_addr. Remove
one call to add_mem_region.
(grub_arch_modules_addr): New function.
* kern/powerpc/ieee1275/init.c (grub_end_addr): Remove variable.
(grub_total_module_size): Likewise.
Include grub/machine/kernel.h.
(grub_arch_modules_addr): New function.
* util/grub-emu.c (grub_end_addr): Remove variable.
(grub_total_module_size): Likewise.
(grub_arch_modules_addr): New function.
* util/misc.c: Include unistd.h.
(grub_util_get_fp_size): New function.
(grub_util_read_at): Likewise.
(grub_util_write_image_at): Likewise.
(grub_util_read_image): Call grub_util_read_at.
(grub_util_write_image): Call grub_util_write_image_at.
* util/i386/pc/grub-mkimage.c (generate_image): Allocate
additional memory in kernel_img for a struct grub_module_info.
Fill in that grub_module_info.
* util/powerpc/ieee1275/grub-mkimage.c: New file.
2005-01-03 Hollis Blanchard <hollis@penguinppc.org>
* boot/powerpc/ieee1275/ieee1275.c (grub_ieee1275_milliseconds):

2
TODO
View file

@ -39,3 +39,5 @@ Priorities:
* Add a fancy menu interface which utilizes the graphics mode
extensively with many eye-candies. This is important to beat
GRUB legacy. :)
* Audit util/powerpc/ieee1275/grub-mkimage.c for endianness fixes.

17
boot/powerpc/ieee1275/crt0.S
View file

@ -1,7 +1,7 @@
/* crt0.S - Startup code for the PowerPC. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
* Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -18,21 +18,6 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
.section ".note"
.align 2
.note_section_header:
.long 8
.long 24
.long 0x1275
.string "PowerPC"
.note_descriptor:
.long 0x0 /* real-mode */
.long 0xffffffff /* real-base */
.long 0xffffffff /* real-size */
.long 0xffffffff /* virt-base */
.long 0xffffffff /* virt-size */
.long 0x00030000 /* load-base */
.extern __bss_start
.extern _end

6
conf/powerpc-ieee1275.rmk
View file

@ -24,9 +24,13 @@ kernel_syms.lst: $(addprefix include/grub/,$(grubof_HEADERS)) genkernsyms.sh
pkgdata_PROGRAMS = grubof
# Utilities.
bin_UTILITIES = grub-emu
bin_UTILITIES = grub-emu grub-mkimage
noinst_UTILITIES = genmoddep
# For grub-mkimage.
grub_mkimage_SOURCES = util/powerpc/ieee1275/grub-mkimage.c util/misc.c \
util/resolve.c
# For grub-emu
grub_emu_SOURCES = kern/main.c kern/device.c \
kern/disk.c kern/dl.c kern/file.c kern/fs.c kern/err.c \

3
include/grub/i386/pc/kernel.h
View file

@ -58,6 +58,9 @@ extern char grub_prefix[];
/* The boot BIOS drive number. */
extern grub_int32_t grub_boot_drive;
/* The end address of the kernel. */
extern grub_addr_t grub_end_addr;
#endif /* ! ASM_FILE */
#endif /* ! KERNEL_MACHINE_HEADER */

26
include/grub/kernel.h
View file

@ -1,6 +1,6 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002 Free Software Foundation, Inc.
* Copyright (C) 2002, 2005 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -31,17 +31,20 @@ struct grub_module_header
grub_size_t size;
};
/* The start address of the kernel. */
extern grub_addr_t grub_start_addr;
/* "gmim" (GRUB Module Info Magic). */
#define GRUB_MODULE_MAGIC 0x676d696d
/* The end address of the kernel. */
extern grub_addr_t grub_end_addr;
struct grub_module_info
{
/* Magic number so we know we have modules present. */
grub_uint32_t magic;
/* The offset of the modules. */
grub_off_t offset;
/* The size of all modules plus this header. */
grub_size_t size;
};
/* The total size of modules including their headers. */
extern grub_size_t grub_total_module_size;
/* The size of the kernel image. */
extern grub_size_t grub_kernel_image_size;
extern grub_addr_t grub_arch_modules_addr (void);
/* The start point of the C code. */
void grub_main (void);
@ -49,9 +52,6 @@ void grub_main (void);
/* The machine-specific initialization. This must initialize memory. */
void grub_machine_init (void);
/* Return the end address of the core image. */
grub_addr_t grub_get_end_addr (void);
/* Register all the exported symbols. This is automatically generated. */
void grub_register_exported_symbols (void);

26
include/grub/powerpc/ieee1275/kernel.h Normal file
View file

@ -0,0 +1,26 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2005 Free Software Foundation, Inc.
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef GRUB_KERNEL_MACHINE_HEADER
#define GRUB_KERNEL_MACHINE_HEADER 1
/* Where grub-mkimage places the core modules in memory. */
#define GRUB_IEEE1275_MODULE_BASE 0x0300000
#endif /* ! GRUB_KERNEL_MACHINE_HEADER */

6
include/grub/util/misc.h
View file

@ -1,6 +1,6 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002,2003 Free Software Foundation, Inc.
* Copyright (C) 2002,2003,2005 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
@ -34,9 +34,13 @@ void *xrealloc (void *ptr, size_t size);
char *xstrdup (const char *str);
char *grub_util_get_path (const char *dir, const char *file);
size_t grub_util_get_fp_size (FILE *fp);
size_t grub_util_get_image_size (const char *path);
void grub_util_read_at (void *img, size_t len, off_t offset, FILE *fp);
char *grub_util_read_image (const char *path);
void grub_util_load_image (const char *path, char *buf);
void grub_util_write_image (const char *img, size_t size, FILE *out);
void grub_util_write_image_at (const void *img, size_t size, off_t offset,
FILE *out);
#endif /* ! GRUB_UTIL_MISC_HEADER */

13
kern/i386/pc/init.c
View file

@ -1,6 +1,6 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
* Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -30,6 +30,7 @@
#include <grub/misc.h>
#include <grub/loader.h>
#include <grub/env.h>
#include <grub/cache.h>
struct mem_region
{
@ -126,7 +127,6 @@ grub_machine_init (void)
grub_uint32_t cont;
struct grub_machine_mmap_entry *entry
= (struct grub_machine_mmap_entry *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR;
grub_addr_t end_addr = grub_get_end_addr ();
int i;
/* Initialize the console as early as possible. */
@ -148,8 +148,6 @@ grub_machine_init (void)
add_mem_region (GRUB_MEMORY_MACHINE_RESERVED_END,
grub_lower_mem - GRUB_MEMORY_MACHINE_RESERVED_END);
add_mem_region (end_addr, GRUB_MEMORY_MACHINE_RESERVED_START - end_addr);
/* Check if grub_get_mmap_entry works. */
cont = grub_get_mmap_entry (entry, 0);
@ -233,3 +231,10 @@ grub_machine_init (void)
/* Initialize the prefix. */
grub_env_set ("prefix", make_install_device ());
}
/* Return the end of the core image. */
grub_addr_t
grub_arch_modules_addr (void)
{
return grub_end_addr;
}

32
kern/main.c
View file

@ -1,7 +1,7 @@
/* main.c - the kernel main routine */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
* Copyright (C) 2002, 2003, 2005 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -29,35 +29,32 @@
#include <grub/device.h>
#include <grub/env.h>
/* Return the end of the core image. */
grub_addr_t
grub_get_end_addr (void)
{
return grub_total_module_size + grub_end_addr;
}
/* Load all modules in core. */
static void
grub_load_modules (void)
{
struct grub_module_info *modinfo;
struct grub_module_header *header;
grub_addr_t modbase;
for (header = (struct grub_module_header *) grub_end_addr;
header < (struct grub_module_header *) grub_get_end_addr ();
modbase = grub_arch_modules_addr ();
modinfo = (struct grub_module_info *) modbase;
/* Check if there are any modules. */
if ((modinfo == 0) || modinfo->magic != GRUB_MODULE_MAGIC)
return;
for (header = (struct grub_module_header *) (modbase + modinfo->offset);
header < (struct grub_module_header *) (modbase + modinfo->size);
header = (struct grub_module_header *) ((char *) header + header->size))
{
if (! grub_dl_load_core ((char *) header + header->offset,
(header->size - header->offset)))
grub_fatal ("%s", grub_errmsg);
}
}
/* Add the region where modules reside into dynamic memory. */
static void
grub_add_unused_region (void)
{
if (grub_total_module_size)
grub_mm_init_region ((void *) grub_end_addr, grub_total_module_size);
/* Add the region where modules reside into dynamic memory. */
grub_mm_init_region ((void *) modinfo, modinfo->size);
}
/* Set the root device according to the dl prefix. */
@ -111,7 +108,6 @@ grub_main (void)
/* Load pre-loaded modules and free the space. */
grub_register_exported_symbols ();
grub_load_modules ();
grub_add_unused_region ();
/* Load the normal mode module. */
grub_load_normal_mode ();

13
kern/powerpc/ieee1275/init.c
View file

@ -1,7 +1,7 @@
/* init.c -- Initialize GRUB on the newworld mac (PPC). */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2003, 2004,2005 Free Software Foundation, Inc.
* Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -31,10 +31,7 @@
#include <grub/misc.h>
#include <grub/machine/init.h>
#include <grub/machine/time.h>
/* XXX: Modules are not yet supported. */
grub_addr_t grub_end_addr = -1;
grub_addr_t grub_total_module_size = 0;
#include <grub/machine/kernel.h>
void
abort (void)
@ -89,3 +86,9 @@ grub_get_rtc (void)
return msecs;
}
grub_addr_t
grub_arch_modules_addr (void)
{
return GRUB_IEEE1275_MODULE_BASE;
}

10
util/grub-emu.c
View file

@ -1,6 +1,6 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2003 Free Software Foundation, Inc.
* Copyright (C) 2003, 2004, 2005 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
@ -45,9 +45,11 @@
#define DEFAULT_DEVICE_MAP DEFAULT_DIRECTORY "/device.map"
/* XXX. */
grub_addr_t grub_end_addr = -1;
grub_addr_t grub_total_module_size = 0;
grub_addr_t
grub_arch_modules_addr (void)
{
return 0;
}
int
grub_arch_dl_check_header (void *ehdr, grub_size_t size)

14
util/i386/pc/grub-mkimage.c
View file

@ -1,7 +1,7 @@
/* grub-mkimage.c - make a bootable image */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002,2003,2004 Free Software Foundation, Inc.
* Copyright (C) 2002,2003,2004,2005 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
@ -79,13 +79,14 @@ generate_image (const char *dir, FILE *out, char *mods[])
unsigned num;
size_t offset;
struct grub_util_path_list *path_list, *p, *next;
struct grub_module_info *modinfo;
path_list = grub_util_resolve_dependencies (dir, "moddep.lst", mods);
kernel_path = grub_util_get_path (dir, "kernel.img");
kernel_size = grub_util_get_image_size (kernel_path);
total_module_size = 0;
total_module_size = sizeof (struct grub_module_info);
for (p = path_list; p; p = p->next)
total_module_size += (grub_util_get_image_size (p->name)
+ sizeof (struct grub_module_header));
@ -94,7 +95,14 @@ generate_image (const char *dir, FILE *out, char *mods[])
kernel_img = xmalloc (kernel_size + total_module_size);
grub_util_load_image (kernel_path, kernel_img);
offset = kernel_size;
/* Fill in the grub_module_info structure. */
modinfo = (struct grub_module_info *) (kernel_img + kernel_size);
modinfo->magic = GRUB_MODULE_MAGIC;
modinfo->offset = sizeof (struct grub_module_info);
modinfo->size = total_module_size;
offset = kernel_size + sizeof (struct grub_module_info);
for (p = path_list; p; p = p->next)
{
struct grub_module_header *header;

42
util/misc.c
View file

@ -25,6 +25,7 @@
#include <sys/stat.h>
#include <sys/times.h>
#include <malloc.h>
#include <unistd.h>
#include <grub/util/misc.h>
#include <grub/mm.h>
@ -106,6 +107,20 @@ grub_util_get_path (const char *dir, const char *file)
return path;
}
size_t
grub_util_get_fp_size (FILE *fp)
{
struct stat st;
if (fflush (fp) == EOF)
grub_util_error ("fflush failed");
if (fstat (fileno (fp), &st) == -1)
grub_util_error ("fstat failed");
return st.st_size;
}
size_t
grub_util_get_image_size (const char *path)
{
@ -119,6 +134,16 @@ grub_util_get_image_size (const char *path)
return st.st_size;
}
void
grub_util_read_at (void *img, size_t size, off_t offset, FILE *fp)
{
if (fseek (fp, offset, SEEK_SET) == -1)
grub_util_error ("fseek failed");
if (fread (img, 1, size, fp) != size)
grub_util_error ("read failed");
}
char *
grub_util_read_image (const char *path)
{
@ -134,9 +159,8 @@ grub_util_read_image (const char *path)
fp = fopen (path, "rb");
if (! fp)
grub_util_error ("cannot open %s", path);
if (fread (img, 1, size, fp) != size)
grub_util_error ("cannot read %s", path);
grub_util_read_at (img, size, 0, fp);
fclose (fp);
@ -164,13 +188,21 @@ grub_util_load_image (const char *path, char *buf)
}
void
grub_util_write_image (const char *img, size_t size, FILE *out)
grub_util_write_image_at (const void *img, size_t size, off_t offset, FILE *out)
{
grub_util_info ("writing 0x%x bytes", size);
grub_util_info ("writing 0x%x bytes at offset 0x%x", size, offset);
if (fseek (out, offset, SEEK_SET) == -1)
grub_util_error ("seek failed");
if (fwrite (img, 1, size, out) != size)
grub_util_error ("write failed");
}
void
grub_util_write_image (const char *img, size_t size, FILE *out)
{
grub_util_write_image_at (img, size, 0, out);
}
void *
grub_malloc (unsigned size)
{

299
util/powerpc/ieee1275/grub-mkimage.c Normal file
View file

@ -0,0 +1,299 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2004, 2005 Free Software Foundation, Inc.
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdio.h>
#include <stdint.h>
#include <unistd.h>
#include <fcntl.h>
#include <getopt.h>
#include <stdlib.h>
#include <grub/elf.h>
#include <grub/util/misc.h>
#include <grub/util/resolve.h>
#include <grub/kernel.h>
#include <grub/machine/kernel.h>
#define ALIGN_UP(addr, align) ((long)((char *)addr + align - 1) & ~(align - 1))
static char *kernel_path = "grubof";
static char *note_path = "note";
void
load_note (Elf32_Phdr *phdr, const char *dir, FILE *out)
{
char *note_img;
char *path;
int note_size;
grub_util_info ("adding CHRP NOTE segment");
path = grub_util_get_path (dir, note_path);
note_size = grub_util_get_image_size (path);
note_img = xmalloc (note_size);
grub_util_load_image (path, note_img);
free (path);
/* Write the note data to the new segment. */
grub_util_write_image_at (note_img, note_size, phdr->p_offset, out);
/* Fill in the rest of the segment header. */
phdr->p_type = PT_NOTE;
phdr->p_flags = PF_R;
phdr->p_align = sizeof (long);
phdr->p_vaddr = 0;
phdr->p_paddr = 0;
phdr->p_filesz = note_size;
phdr->p_memsz = 0;
}
void
load_modules (Elf32_Phdr *phdr, const char *dir, char *mods[], FILE *out)
{
char *module_img;
struct grub_util_path_list *path_list;
struct grub_util_path_list *p;
struct grub_module_info *modinfo;
size_t offset;
size_t total_module_size;
path_list = grub_util_resolve_dependencies (dir, "moddep.lst", mods);
offset = sizeof (struct grub_module_info);
total_module_size = sizeof (struct grub_module_info);
for (p = path_list; p; p = p->next)
{
total_module_size += (grub_util_get_image_size (p->name)
+ sizeof (struct grub_module_header));
}
grub_util_info ("the total module size is 0x%x", total_module_size);
module_img = xmalloc (total_module_size);
modinfo = (struct grub_module_info *) module_img;
modinfo->magic = GRUB_MODULE_MAGIC;
modinfo->offset = sizeof (struct grub_module_info);
modinfo->size = total_module_size;
/* Load all the modules, with headers, into module_img. */
for (p = path_list; p; p = p->next)
{
struct grub_module_header *header;
size_t mod_size;
grub_util_info ("adding module %s", p->name);
mod_size = grub_util_get_image_size (p->name);
header = (struct grub_module_header *) (module_img + offset);
header->offset = grub_cpu_to_be32 (sizeof (*header));
header->size = grub_cpu_to_be32 (mod_size + sizeof (*header));
grub_util_load_image (p->name, module_img + offset + sizeof (*header));
offset += sizeof (*header) + mod_size;
}
/* Write the module data to the new segment. */
grub_util_write_image_at (module_img, total_module_size, phdr->p_offset, out);
/* Fill in the rest of the segment header. */
phdr->p_type = PT_LOAD;
phdr->p_flags = PF_R | PF_W | PF_X;
phdr->p_align = sizeof (long);
phdr->p_vaddr = MODULE_BASE;
phdr->p_paddr = MODULE_BASE;
phdr->p_filesz = total_module_size;
phdr->p_memsz = total_module_size;
}
void
add_segments (char *dir, FILE *out, int chrp, char *mods[])
{
Elf32_Ehdr ehdr;
Elf32_Phdr *phdrs = NULL;
Elf32_Phdr *phdr;
FILE *in;
off_t phdroff;
int i;
/* Read ELF header. */
in = fopen (kernel_path, "rb");
if (! in)
grub_util_error ("cannot open %s", kernel_path);
grub_util_read_at (&ehdr, sizeof (ehdr), 0, in);
phdrs = xmalloc (ehdr.e_phentsize * (ehdr.e_phnum + 2));
/* Copy all existing segments. */
for (i = 0; i < ehdr.e_phnum; i++)
{
char *segment_img;
phdr = phdrs + i;
/* Read segment header. */
grub_util_read_at (phdr, sizeof (Elf32_Phdr), (ehdr.e_phoff
+ (i * ehdr.e_phentsize)),
in);
grub_util_info ("copying segment %d, type %d", i, phdr->p_type);
/* Read segment data and write it to new file. */
segment_img = xmalloc (phdr->p_filesz);
grub_util_read_at (segment_img, phdr->p_filesz, phdr->p_offset, in);
grub_util_write_image_at (segment_img, phdr->p_filesz, phdr->p_offset, out);
free (segment_img);
}
if (mods[0] != NULL)
{
/* Construct new segment header for modules. */
phdr = phdrs + ehdr.e_phnum;
ehdr.e_phnum++;
/* Fill in p_offset so the callees know where to write. */
phdr->p_offset = ALIGN_UP (grub_util_get_fp_size (out), sizeof (long));
load_modules (phdr, dir, mods, out);
}
if (chrp)
{
/* Construct new segment header for the CHRP note. */
phdr = phdrs + ehdr.e_phnum;
ehdr.e_phnum++;
/* Fill in p_offset so the callees know where to write. */
phdr->p_offset = ALIGN_UP (grub_util_get_fp_size (out), sizeof (long));
load_note (phdr, dir, out);
}
/* Don't bother preserving the section headers. */
ehdr.e_shoff = 0;
ehdr.e_shnum = 0;
ehdr.e_shstrndx = 0;
/* Append entire segment table to the file. */
phdroff = ALIGN_UP (grub_util_get_fp_size (out), sizeof (long));
grub_util_write_image_at (phdrs, ehdr.e_phentsize * ehdr.e_phnum, phdroff,
out);
/* Write ELF header. */
ehdr.e_phoff = phdroff;
grub_util_write_image_at (&ehdr, sizeof (ehdr), 0, out);
free (phdrs);
}
static struct option options[] =
{
{"directory", required_argument, 0, 'd'},
{"output", required_argument, 0, 'o'},
{"help", no_argument, 0, 'h'},
{"note", no_argument, 0, 'n'},
{"version", no_argument, 0, 'V'},
{"verbose", no_argument, 0, 'v'},
{ 0, 0, 0, 0 },
};
static void
usage (int status)
{
if (status)
fprintf (stderr, "Try ``grub-mkimage --help'' for more information.\n");
else
printf ("\
Usage: grub-mkimage -o FILE [OPTION]... [MODULES]\n\
\n\
Make a bootable image of GRUB.\n\
\n\
-d, --directory=DIR use images and modules under DIR [default=%s]\n\
-o, --output=FILE output a generated image to FILE\n\
-h, --help display this message and exit\n\
-n, --note add NOTE segment for CHRP Open Firmware\n\
-V, --version print version information and exit\n\
-v, --verbose print verbose messages\n\
\n\
Report bugs to <%s>.\n\
", GRUB_DATADIR, PACKAGE_BUGREPORT);
exit (status);
}
int
main (int argc, char *argv[])
{
FILE *fp;
char *output = NULL;
char *dir = NULL;
int chrp = 0;
progname = "grub-mkimage";
while (1)
{
int c = getopt_long (argc, argv, "d:o:hVvn", options, 0);
if (c == -1)
break;
switch (c)
{
case 'd':
if (dir)
free (dir);
dir = xstrdup (optarg);
break;
case 'h':
usage (0);
break;
case 'n':
chrp = 1;
break;
case 'o':
if (output)
free (output);
output = xstrdup (optarg);
break;
case 'V':
printf ("grub-mkimage (%s) %s\n", PACKAGE_NAME, PACKAGE_VERSION);
return 0;
case 'v':
verbosity++;
break;
default:
usage (1);
break;
}
}
if (!output)
usage (1);
fp = fopen (output, "wb");
if (! fp)
grub_util_error ("cannot open %s", output);
add_segments (dir ? : GRUB_DATADIR, fp, chrp, argv + optind);
fclose (fp);
return 0;
}