0b412211b3
* 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.
117 lines
3.1 KiB
C
117 lines
3.1 KiB
C
/* main.c - the kernel main routine */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2002, 2003, 2005 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <grub/kernel.h>
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#include <grub/misc.h>
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#include <grub/mm.h>
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#include <grub/symbol.h>
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#include <grub/dl.h>
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#include <grub/term.h>
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#include <grub/rescue.h>
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#include <grub/file.h>
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#include <grub/device.h>
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#include <grub/env.h>
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/* Load all modules in core. */
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static void
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grub_load_modules (void)
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{
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struct grub_module_info *modinfo;
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struct grub_module_header *header;
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grub_addr_t modbase;
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modbase = grub_arch_modules_addr ();
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modinfo = (struct grub_module_info *) modbase;
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/* Check if there are any modules. */
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if ((modinfo == 0) || modinfo->magic != GRUB_MODULE_MAGIC)
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return;
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for (header = (struct grub_module_header *) (modbase + modinfo->offset);
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header < (struct grub_module_header *) (modbase + modinfo->size);
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header = (struct grub_module_header *) ((char *) header + header->size))
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{
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if (! grub_dl_load_core ((char *) header + header->offset,
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(header->size - header->offset)))
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grub_fatal ("%s", grub_errmsg);
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}
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/* Add the region where modules reside into dynamic memory. */
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grub_mm_init_region ((void *) modinfo, modinfo->size);
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}
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/* Set the root device according to the dl prefix. */
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static void
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grub_set_root_dev (void)
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{
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const char *prefix;
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prefix = grub_env_get ("prefix");
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if (prefix)
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{
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char *dev;
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dev = grub_file_get_device_name (prefix);
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if (dev)
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{
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grub_device_set_root (dev);
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grub_free (dev);
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}
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}
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}
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/* Load the normal mode module and execute the normal mode if possible. */
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static void
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grub_load_normal_mode (void)
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{
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/* Load the module. */
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grub_dl_load ("normal");
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/* Ignore any error, because we have the rescue mode anyway. */
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grub_errno = GRUB_ERR_NONE;
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}
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/* The main routine. */
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void
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grub_main (void)
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{
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/* First of all, initialize the machine. */
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grub_machine_init ();
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/* Hello. */
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grub_setcolorstate (GRUB_TERM_COLOR_HIGHLIGHT);
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grub_printf ("Welcome to GRUB!\n\n");
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grub_setcolorstate (GRUB_TERM_COLOR_STANDARD);
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/* It is better to set the root device as soon as possible,
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for convenience. */
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grub_set_root_dev ();
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/* Load pre-loaded modules and free the space. */
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grub_register_exported_symbols ();
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grub_load_modules ();
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/* Load the normal mode module. */
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grub_load_normal_mode ();
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/* Enter the rescue mode. */
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grub_enter_rescue_mode ();
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}
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