758 lines
20 KiB
C
758 lines
20 KiB
C
/*
|
|
* GRUB -- GRand Unified Bootloader
|
|
* Copyright (C) 1999,2000,2001,2002,2003,2004,2005,2007,2008,2009 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 <grub/memory.h>
|
|
#ifdef GRUB_MACHINE_PCBIOS
|
|
#include <grub/machine/biosnum.h>
|
|
#include <grub/machine/apm.h>
|
|
#include <grub/machine/memory.h>
|
|
#endif
|
|
#include <grub/multiboot.h>
|
|
#include <grub/cpu/relocator.h>
|
|
#include <grub/disk.h>
|
|
#include <grub/device.h>
|
|
#include <grub/partition.h>
|
|
#include <grub/mm.h>
|
|
#include <grub/misc.h>
|
|
#include <grub/env.h>
|
|
#include <grub/relocator.h>
|
|
#include <grub/video.h>
|
|
#include <grub/file.h>
|
|
#include <grub/net.h>
|
|
|
|
/* The bits in the required part of flags field we don't support. */
|
|
#define UNSUPPORTED_FLAGS 0x0000fff8
|
|
|
|
struct module
|
|
{
|
|
struct module *next;
|
|
grub_addr_t start;
|
|
grub_size_t size;
|
|
char *cmdline;
|
|
int cmdline_size;
|
|
};
|
|
|
|
static struct module *modules, *modules_last;
|
|
static grub_size_t cmdline_size;
|
|
static grub_size_t total_modcmd;
|
|
static unsigned modcnt;
|
|
static char *cmdline = NULL;
|
|
static grub_uint32_t bootdev;
|
|
static int bootdev_set;
|
|
static grub_size_t elf_sec_num, elf_sec_entsize;
|
|
static unsigned elf_sec_shstrndx;
|
|
static void *elf_sections;
|
|
|
|
|
|
grub_err_t
|
|
grub_multiboot_load (grub_file_t file)
|
|
{
|
|
char *buffer;
|
|
grub_ssize_t len;
|
|
struct multiboot_header *header;
|
|
grub_err_t err;
|
|
|
|
buffer = grub_malloc (MULTIBOOT_SEARCH);
|
|
if (!buffer)
|
|
return grub_errno;
|
|
|
|
len = grub_file_read (file, buffer, MULTIBOOT_SEARCH);
|
|
if (len < 32)
|
|
{
|
|
grub_free (buffer);
|
|
return grub_error (GRUB_ERR_BAD_OS, "file too small");
|
|
}
|
|
|
|
/* Look for the multiboot header in the buffer. The header should
|
|
be at least 12 bytes and aligned on a 4-byte boundary. */
|
|
for (header = (struct multiboot_header *) buffer;
|
|
((char *) header <= buffer + len - 12) || (header = 0);
|
|
header = (struct multiboot_header *) ((char *) header + MULTIBOOT_HEADER_ALIGN))
|
|
{
|
|
if (header->magic == MULTIBOOT_HEADER_MAGIC
|
|
&& !(header->magic + header->flags + header->checksum))
|
|
break;
|
|
}
|
|
|
|
if (header == 0)
|
|
{
|
|
grub_free (buffer);
|
|
return grub_error (GRUB_ERR_BAD_ARGUMENT, "no multiboot header found");
|
|
}
|
|
|
|
if (header->flags & UNSUPPORTED_FLAGS)
|
|
{
|
|
grub_free (buffer);
|
|
return grub_error (GRUB_ERR_UNKNOWN_OS,
|
|
"unsupported flag: 0x%x", header->flags);
|
|
}
|
|
|
|
if (header->flags & MULTIBOOT_AOUT_KLUDGE)
|
|
{
|
|
int offset = ((char *) header - buffer -
|
|
(header->header_addr - header->load_addr));
|
|
int load_size = ((header->load_end_addr == 0) ? file->size - offset :
|
|
header->load_end_addr - header->load_addr);
|
|
grub_size_t code_size;
|
|
void *source;
|
|
grub_relocator_chunk_t ch;
|
|
|
|
if (header->bss_end_addr)
|
|
code_size = (header->bss_end_addr - header->load_addr);
|
|
else
|
|
code_size = load_size;
|
|
|
|
err = grub_relocator_alloc_chunk_addr (grub_multiboot_relocator,
|
|
&ch, header->load_addr,
|
|
code_size);
|
|
if (err)
|
|
{
|
|
grub_dprintf ("multiboot_loader", "Error loading aout kludge\n");
|
|
grub_free (buffer);
|
|
return err;
|
|
}
|
|
source = get_virtual_current_address (ch);
|
|
|
|
if ((grub_file_seek (file, offset)) == (grub_off_t) -1)
|
|
{
|
|
grub_free (buffer);
|
|
return grub_errno;
|
|
}
|
|
|
|
grub_file_read (file, source, load_size);
|
|
if (grub_errno)
|
|
{
|
|
grub_free (buffer);
|
|
return grub_errno;
|
|
}
|
|
|
|
if (header->bss_end_addr)
|
|
grub_memset ((grub_uint8_t *) source + load_size, 0,
|
|
header->bss_end_addr - header->load_addr - load_size);
|
|
|
|
grub_multiboot_payload_eip = header->entry_addr;
|
|
}
|
|
else
|
|
{
|
|
err = grub_multiboot_load_elf (file, buffer);
|
|
if (err)
|
|
{
|
|
grub_free (buffer);
|
|
return err;
|
|
}
|
|
}
|
|
|
|
if (header->flags & MULTIBOOT_VIDEO_MODE)
|
|
{
|
|
switch (header->mode_type)
|
|
{
|
|
case 1:
|
|
err = grub_multiboot_set_console (GRUB_MULTIBOOT_CONSOLE_EGA_TEXT,
|
|
GRUB_MULTIBOOT_CONSOLE_EGA_TEXT
|
|
| GRUB_MULTIBOOT_CONSOLE_FRAMEBUFFER,
|
|
0, 0, 0, 0);
|
|
break;
|
|
case 0:
|
|
err = grub_multiboot_set_console (GRUB_MULTIBOOT_CONSOLE_FRAMEBUFFER,
|
|
GRUB_MULTIBOOT_CONSOLE_EGA_TEXT
|
|
| GRUB_MULTIBOOT_CONSOLE_FRAMEBUFFER,
|
|
header->width, header->height,
|
|
header->depth, 0);
|
|
break;
|
|
default:
|
|
err = grub_error (GRUB_ERR_BAD_OS,
|
|
"unsupported graphical mode type %d",
|
|
header->mode_type);
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
err = grub_multiboot_set_console (GRUB_MULTIBOOT_CONSOLE_EGA_TEXT,
|
|
GRUB_MULTIBOOT_CONSOLE_EGA_TEXT,
|
|
0, 0, 0, 0);
|
|
return err;
|
|
}
|
|
|
|
#if GRUB_MACHINE_HAS_VBE || GRUB_MACHINE_HAS_VGA_TEXT
|
|
#include <grub/i386/pc/vbe.h>
|
|
#endif
|
|
|
|
static grub_size_t
|
|
grub_multiboot_get_mbi_size (void)
|
|
{
|
|
grub_size_t ret;
|
|
struct grub_net_network_level_interface *net;
|
|
|
|
ret = sizeof (struct multiboot_info) + ALIGN_UP (cmdline_size, 4)
|
|
+ modcnt * sizeof (struct multiboot_mod_list) + total_modcmd
|
|
+ ALIGN_UP (sizeof(PACKAGE_STRING), 4)
|
|
+ grub_get_multiboot_mmap_count () * sizeof (struct multiboot_mmap_entry)
|
|
+ elf_sec_entsize * elf_sec_num
|
|
+ 256 * sizeof (struct multiboot_color)
|
|
#if GRUB_MACHINE_HAS_VBE || GRUB_MACHINE_HAS_VGA_TEXT
|
|
+ sizeof (struct grub_vbe_info_block)
|
|
+ sizeof (struct grub_vbe_mode_info_block)
|
|
#endif
|
|
+ ALIGN_UP (sizeof (struct multiboot_apm_info), 4);
|
|
|
|
FOR_NET_NETWORK_LEVEL_INTERFACES(net)
|
|
if (net->dhcp_ack)
|
|
{
|
|
ret += net->dhcp_acklen;
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Fill previously allocated Multiboot mmap. */
|
|
static void
|
|
grub_fill_multiboot_mmap (struct multiboot_mmap_entry *first_entry)
|
|
{
|
|
struct multiboot_mmap_entry *mmap_entry = (struct multiboot_mmap_entry *) first_entry;
|
|
|
|
auto int NESTED_FUNC_ATTR hook (grub_uint64_t, grub_uint64_t,
|
|
grub_memory_type_t);
|
|
int NESTED_FUNC_ATTR hook (grub_uint64_t addr, grub_uint64_t size,
|
|
grub_memory_type_t type)
|
|
{
|
|
mmap_entry->addr = addr;
|
|
mmap_entry->len = size;
|
|
switch (type)
|
|
{
|
|
case GRUB_MEMORY_AVAILABLE:
|
|
mmap_entry->type = MULTIBOOT_MEMORY_AVAILABLE;
|
|
break;
|
|
|
|
case GRUB_MEMORY_ACPI:
|
|
mmap_entry->type = MULTIBOOT_MEMORY_ACPI_RECLAIMABLE;
|
|
break;
|
|
|
|
case GRUB_MEMORY_NVS:
|
|
mmap_entry->type = MULTIBOOT_MEMORY_NVS;
|
|
break;
|
|
|
|
case GRUB_MEMORY_BADRAM:
|
|
mmap_entry->type = MULTIBOOT_MEMORY_BADRAM;
|
|
break;
|
|
|
|
default:
|
|
mmap_entry->type = MULTIBOOT_MEMORY_RESERVED;
|
|
break;
|
|
}
|
|
mmap_entry->size = sizeof (struct multiboot_mmap_entry) - sizeof (mmap_entry->size);
|
|
mmap_entry++;
|
|
|
|
return 0;
|
|
}
|
|
|
|
grub_mmap_iterate (hook);
|
|
}
|
|
|
|
#if GRUB_MACHINE_HAS_VBE || GRUB_MACHINE_HAS_VGA_TEXT
|
|
|
|
static grub_err_t
|
|
fill_vbe_info (struct multiboot_info *mbi, grub_uint8_t *ptrorig,
|
|
grub_uint32_t ptrdest, int fill_generic)
|
|
{
|
|
grub_uint32_t vbe_mode;
|
|
struct grub_vbe_mode_info_block *mode_info;
|
|
#if GRUB_MACHINE_HAS_VBE
|
|
grub_vbe_status_t status;
|
|
void *scratch = (void *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR;
|
|
|
|
status = grub_vbe_bios_get_controller_info (scratch);
|
|
if (status != GRUB_VBE_STATUS_OK)
|
|
return grub_error (GRUB_ERR_IO, "Can't get controller info.");
|
|
|
|
mbi->vbe_control_info = ptrdest;
|
|
grub_memcpy (ptrorig, scratch, sizeof (struct grub_vbe_info_block));
|
|
ptrorig += sizeof (struct grub_vbe_info_block);
|
|
ptrdest += sizeof (struct grub_vbe_info_block);
|
|
#else
|
|
mbi->vbe_control_info = 0;
|
|
#endif
|
|
|
|
#if GRUB_MACHINE_HAS_VBE
|
|
status = grub_vbe_bios_get_mode (scratch);
|
|
vbe_mode = *(grub_uint32_t *) scratch;
|
|
if (status != GRUB_VBE_STATUS_OK)
|
|
return grub_error (GRUB_ERR_IO, "can't get VBE mode");
|
|
#else
|
|
vbe_mode = 3;
|
|
#endif
|
|
mbi->vbe_mode = vbe_mode;
|
|
|
|
mode_info = (struct grub_vbe_mode_info_block *) ptrorig;
|
|
mbi->vbe_mode_info = ptrdest;
|
|
/* get_mode_info isn't available for mode 3. */
|
|
if (vbe_mode == 3)
|
|
{
|
|
grub_memset (mode_info, 0, sizeof (struct grub_vbe_mode_info_block));
|
|
mode_info->memory_model = GRUB_VBE_MEMORY_MODEL_TEXT;
|
|
mode_info->x_resolution = 80;
|
|
mode_info->y_resolution = 25;
|
|
}
|
|
else
|
|
{
|
|
#if GRUB_MACHINE_HAS_VBE
|
|
status = grub_vbe_bios_get_mode_info (vbe_mode, scratch);
|
|
if (status != GRUB_VBE_STATUS_OK)
|
|
return grub_error (GRUB_ERR_IO, "can't get mode info");
|
|
grub_memcpy (mode_info, scratch,
|
|
sizeof (struct grub_vbe_mode_info_block));
|
|
#endif
|
|
}
|
|
ptrorig += sizeof (struct grub_vbe_mode_info_block);
|
|
ptrdest += sizeof (struct grub_vbe_mode_info_block);
|
|
|
|
#if GRUB_MACHINE_HAS_VBE
|
|
grub_vbe_bios_get_pm_interface (&mbi->vbe_interface_seg,
|
|
&mbi->vbe_interface_off,
|
|
&mbi->vbe_interface_len);
|
|
#endif
|
|
|
|
mbi->flags |= MULTIBOOT_INFO_VBE_INFO;
|
|
|
|
if (fill_generic && mode_info->memory_model == GRUB_VBE_MEMORY_MODEL_TEXT)
|
|
{
|
|
mbi->framebuffer_addr = 0xb8000;
|
|
|
|
mbi->framebuffer_pitch = 2 * mode_info->x_resolution;
|
|
mbi->framebuffer_width = mode_info->x_resolution;
|
|
mbi->framebuffer_height = mode_info->y_resolution;
|
|
|
|
mbi->framebuffer_bpp = 16;
|
|
|
|
mbi->framebuffer_type = MULTIBOOT_FRAMEBUFFER_TYPE_EGA_TEXT;
|
|
|
|
mbi->flags |= MULTIBOOT_INFO_FRAMEBUFFER_INFO;
|
|
}
|
|
|
|
return GRUB_ERR_NONE;
|
|
}
|
|
#endif
|
|
|
|
static grub_err_t
|
|
retrieve_video_parameters (struct multiboot_info *mbi,
|
|
grub_uint8_t *ptrorig, grub_uint32_t ptrdest)
|
|
{
|
|
grub_err_t err;
|
|
struct grub_video_mode_info mode_info;
|
|
void *framebuffer;
|
|
grub_video_driver_id_t driv_id;
|
|
struct grub_video_palette_data palette[256];
|
|
|
|
err = grub_multiboot_set_video_mode ();
|
|
if (err)
|
|
{
|
|
grub_print_error ();
|
|
grub_errno = GRUB_ERR_NONE;
|
|
}
|
|
|
|
grub_video_get_palette (0, ARRAY_SIZE (palette), palette);
|
|
|
|
driv_id = grub_video_get_driver_id ();
|
|
#if GRUB_MACHINE_HAS_VGA_TEXT
|
|
if (driv_id == GRUB_VIDEO_DRIVER_NONE)
|
|
return fill_vbe_info (mbi, ptrorig, ptrdest, 1);
|
|
#else
|
|
if (driv_id == GRUB_VIDEO_DRIVER_NONE)
|
|
return GRUB_ERR_NONE;
|
|
#endif
|
|
|
|
err = grub_video_get_info_and_fini (&mode_info, &framebuffer);
|
|
if (err)
|
|
return err;
|
|
|
|
mbi->framebuffer_addr = (grub_addr_t) framebuffer;
|
|
mbi->framebuffer_pitch = mode_info.pitch;
|
|
|
|
mbi->framebuffer_width = mode_info.width;
|
|
mbi->framebuffer_height = mode_info.height;
|
|
|
|
mbi->framebuffer_bpp = mode_info.bpp;
|
|
|
|
if (mode_info.mode_type & GRUB_VIDEO_MODE_TYPE_INDEX_COLOR)
|
|
{
|
|
struct multiboot_color *mb_palette;
|
|
unsigned i;
|
|
mbi->framebuffer_type = MULTIBOOT_FRAMEBUFFER_TYPE_INDEXED;
|
|
mbi->framebuffer_palette_addr = ptrdest;
|
|
mbi->framebuffer_palette_num_colors = mode_info.number_of_colors;
|
|
if (mbi->framebuffer_palette_num_colors > ARRAY_SIZE (palette))
|
|
mbi->framebuffer_palette_num_colors = ARRAY_SIZE (palette);
|
|
mb_palette = (struct multiboot_color *) ptrorig;
|
|
for (i = 0; i < mbi->framebuffer_palette_num_colors; i++)
|
|
{
|
|
mb_palette[i].red = palette[i].r;
|
|
mb_palette[i].green = palette[i].g;
|
|
mb_palette[i].blue = palette[i].b;
|
|
}
|
|
ptrorig += mbi->framebuffer_palette_num_colors
|
|
* sizeof (struct multiboot_color);
|
|
ptrdest += mbi->framebuffer_palette_num_colors
|
|
* sizeof (struct multiboot_color);
|
|
}
|
|
else
|
|
{
|
|
mbi->framebuffer_type = MULTIBOOT_FRAMEBUFFER_TYPE_RGB;
|
|
mbi->framebuffer_red_field_position = mode_info.red_field_pos;
|
|
mbi->framebuffer_red_mask_size = mode_info.red_mask_size;
|
|
mbi->framebuffer_green_field_position = mode_info.green_field_pos;
|
|
mbi->framebuffer_green_mask_size = mode_info.green_mask_size;
|
|
mbi->framebuffer_blue_field_position = mode_info.blue_field_pos;
|
|
mbi->framebuffer_blue_mask_size = mode_info.blue_mask_size;
|
|
}
|
|
|
|
mbi->flags |= MULTIBOOT_INFO_FRAMEBUFFER_INFO;
|
|
|
|
#if GRUB_MACHINE_HAS_VBE
|
|
if (driv_id == GRUB_VIDEO_DRIVER_VBE)
|
|
return fill_vbe_info (mbi, ptrorig, ptrdest, 0);
|
|
#endif
|
|
|
|
return GRUB_ERR_NONE;
|
|
}
|
|
|
|
grub_err_t
|
|
grub_multiboot_make_mbi (grub_uint32_t *target)
|
|
{
|
|
struct multiboot_info *mbi;
|
|
struct multiboot_mod_list *modlist;
|
|
unsigned i;
|
|
struct module *cur;
|
|
grub_size_t mmap_size;
|
|
grub_uint8_t *ptrorig;
|
|
grub_addr_t ptrdest;
|
|
|
|
grub_err_t err;
|
|
grub_size_t bufsize;
|
|
grub_relocator_chunk_t ch;
|
|
|
|
bufsize = grub_multiboot_get_mbi_size ();
|
|
|
|
err = grub_relocator_alloc_chunk_align (grub_multiboot_relocator, &ch,
|
|
0x10000, 0x100000 - bufsize,
|
|
bufsize, 4,
|
|
GRUB_RELOCATOR_PREFERENCE_NONE);
|
|
if (err)
|
|
return err;
|
|
ptrorig = get_virtual_current_address (ch);
|
|
ptrdest = get_physical_target_address (ch);
|
|
|
|
*target = ptrdest;
|
|
|
|
mbi = (struct multiboot_info *) ptrorig;
|
|
ptrorig += sizeof (*mbi);
|
|
ptrdest += sizeof (*mbi);
|
|
grub_memset (mbi, 0, sizeof (*mbi));
|
|
|
|
grub_memcpy (ptrorig, cmdline, cmdline_size);
|
|
mbi->flags |= MULTIBOOT_INFO_CMDLINE;
|
|
mbi->cmdline = ptrdest;
|
|
ptrorig += ALIGN_UP (cmdline_size, 4);
|
|
ptrdest += ALIGN_UP (cmdline_size, 4);
|
|
|
|
grub_memcpy (ptrorig, PACKAGE_STRING, sizeof(PACKAGE_STRING));
|
|
mbi->flags |= MULTIBOOT_INFO_BOOT_LOADER_NAME;
|
|
mbi->boot_loader_name = ptrdest;
|
|
ptrorig += ALIGN_UP (sizeof(PACKAGE_STRING), 4);
|
|
ptrdest += ALIGN_UP (sizeof(PACKAGE_STRING), 4);
|
|
|
|
#ifdef GRUB_MACHINE_PCBIOS
|
|
{
|
|
struct grub_apm_info info;
|
|
if (grub_apm_get_info (&info))
|
|
{
|
|
struct multiboot_apm_info *mbinfo = (void *) ptrorig;
|
|
|
|
mbinfo->cseg = info.cseg;
|
|
mbinfo->offset = info.offset;
|
|
mbinfo->cseg_16 = info.cseg_16;
|
|
mbinfo->dseg = info.dseg;
|
|
mbinfo->flags = info.flags;
|
|
mbinfo->cseg_len = info.cseg_len;
|
|
mbinfo->dseg_len = info.dseg_len;
|
|
mbinfo->cseg_16_len = info.cseg_16_len;
|
|
mbinfo->version = info.version;
|
|
|
|
ptrorig += ALIGN_UP (sizeof (struct multiboot_apm_info), 4);
|
|
ptrdest += ALIGN_UP (sizeof (struct multiboot_apm_info), 4);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (modcnt)
|
|
{
|
|
mbi->flags |= MULTIBOOT_INFO_MODS;
|
|
mbi->mods_addr = ptrdest;
|
|
mbi->mods_count = modcnt;
|
|
modlist = (struct multiboot_mod_list *) ptrorig;
|
|
ptrorig += modcnt * sizeof (struct multiboot_mod_list);
|
|
ptrdest += modcnt * sizeof (struct multiboot_mod_list);
|
|
|
|
for (i = 0, cur = modules; i < modcnt; i++, cur = cur->next)
|
|
{
|
|
modlist[i].mod_start = cur->start;
|
|
modlist[i].mod_end = modlist[i].mod_start + cur->size;
|
|
modlist[i].cmdline = ptrdest;
|
|
grub_memcpy (ptrorig, cur->cmdline, cur->cmdline_size);
|
|
ptrorig += ALIGN_UP (cur->cmdline_size, 4);
|
|
ptrdest += ALIGN_UP (cur->cmdline_size, 4);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
mbi->mods_addr = 0;
|
|
mbi->mods_count = 0;
|
|
}
|
|
|
|
mmap_size = grub_get_multiboot_mmap_count ()
|
|
* sizeof (struct multiboot_mmap_entry);
|
|
grub_fill_multiboot_mmap ((struct multiboot_mmap_entry *) ptrorig);
|
|
mbi->mmap_length = mmap_size;
|
|
mbi->mmap_addr = ptrdest;
|
|
mbi->flags |= MULTIBOOT_INFO_MEM_MAP;
|
|
ptrorig += mmap_size;
|
|
ptrdest += mmap_size;
|
|
|
|
/* Convert from bytes to kilobytes. */
|
|
mbi->mem_lower = grub_mmap_get_lower () / 1024;
|
|
mbi->mem_upper = grub_mmap_get_upper () / 1024;
|
|
mbi->flags |= MULTIBOOT_INFO_MEMORY;
|
|
|
|
if (bootdev_set)
|
|
{
|
|
mbi->boot_device = bootdev;
|
|
mbi->flags |= MULTIBOOT_INFO_BOOTDEV;
|
|
}
|
|
|
|
{
|
|
struct grub_net_network_level_interface *net;
|
|
FOR_NET_NETWORK_LEVEL_INTERFACES(net)
|
|
if (net->dhcp_ack)
|
|
{
|
|
grub_memcpy (ptrorig, net->dhcp_ack, net->dhcp_acklen);
|
|
mbi->drives_addr = ptrdest;
|
|
mbi->drives_length = net->dhcp_acklen;
|
|
ptrorig += net->dhcp_acklen;
|
|
ptrdest += net->dhcp_acklen;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (elf_sec_num)
|
|
{
|
|
mbi->u.elf_sec.addr = ptrdest;
|
|
grub_memcpy (ptrorig, elf_sections, elf_sec_entsize * elf_sec_num);
|
|
mbi->u.elf_sec.num = elf_sec_num;
|
|
mbi->u.elf_sec.size = elf_sec_entsize;
|
|
mbi->u.elf_sec.shndx = elf_sec_shstrndx;
|
|
|
|
mbi->flags |= MULTIBOOT_INFO_ELF_SHDR;
|
|
|
|
ptrorig += elf_sec_entsize * elf_sec_num;
|
|
ptrdest += elf_sec_entsize * elf_sec_num;
|
|
}
|
|
|
|
err = retrieve_video_parameters (mbi, ptrorig, ptrdest);
|
|
if (err)
|
|
{
|
|
grub_print_error ();
|
|
grub_errno = GRUB_ERR_NONE;
|
|
}
|
|
|
|
if ((mbi->flags & MULTIBOOT_INFO_FRAMEBUFFER_INFO)
|
|
&& mbi->framebuffer_type == MULTIBOOT_FRAMEBUFFER_TYPE_INDEXED)
|
|
{
|
|
ptrorig += mbi->framebuffer_palette_num_colors
|
|
* sizeof (struct multiboot_color);
|
|
ptrdest += mbi->framebuffer_palette_num_colors
|
|
* sizeof (struct multiboot_color);
|
|
}
|
|
|
|
#if GRUB_MACHINE_HAS_VBE
|
|
ptrorig += sizeof (struct grub_vbe_info_block);
|
|
ptrdest += sizeof (struct grub_vbe_info_block);
|
|
ptrorig += sizeof (struct grub_vbe_mode_info_block);
|
|
ptrdest += sizeof (struct grub_vbe_mode_info_block);
|
|
#endif
|
|
|
|
return GRUB_ERR_NONE;
|
|
}
|
|
|
|
void
|
|
grub_multiboot_add_elfsyms (grub_size_t num, grub_size_t entsize,
|
|
unsigned shndx, void *data)
|
|
{
|
|
elf_sec_num = num;
|
|
elf_sec_shstrndx = shndx;
|
|
elf_sec_entsize = entsize;
|
|
elf_sections = data;
|
|
}
|
|
|
|
void
|
|
grub_multiboot_free_mbi (void)
|
|
{
|
|
struct module *cur, *next;
|
|
|
|
cmdline_size = 0;
|
|
total_modcmd = 0;
|
|
modcnt = 0;
|
|
grub_free (cmdline);
|
|
cmdline = NULL;
|
|
bootdev_set = 0;
|
|
|
|
for (cur = modules; cur; cur = next)
|
|
{
|
|
next = cur->next;
|
|
grub_free (cur->cmdline);
|
|
grub_free (cur);
|
|
}
|
|
modules = NULL;
|
|
modules_last = NULL;
|
|
|
|
grub_free (elf_sections);
|
|
elf_sections = NULL;
|
|
elf_sec_entsize = 0;
|
|
elf_sec_num = 0;
|
|
}
|
|
|
|
grub_err_t
|
|
grub_multiboot_init_mbi (int argc, char *argv[])
|
|
{
|
|
grub_ssize_t len = 0;
|
|
char *p;
|
|
int i;
|
|
|
|
grub_multiboot_free_mbi ();
|
|
|
|
for (i = 0; i < argc; i++)
|
|
len += grub_strlen (argv[i]) + 1;
|
|
if (len == 0)
|
|
len = 1;
|
|
|
|
cmdline = p = grub_malloc (len);
|
|
if (! cmdline)
|
|
return grub_errno;
|
|
cmdline_size = len;
|
|
|
|
for (i = 0; i < argc; i++)
|
|
{
|
|
p = grub_stpcpy (p, argv[i]);
|
|
*(p++) = ' ';
|
|
}
|
|
|
|
/* Remove the space after the last word. */
|
|
if (p != cmdline)
|
|
p--;
|
|
*p = '\0';
|
|
|
|
return GRUB_ERR_NONE;
|
|
}
|
|
|
|
grub_err_t
|
|
grub_multiboot_add_module (grub_addr_t start, grub_size_t size,
|
|
int argc, char *argv[])
|
|
{
|
|
struct module *newmod;
|
|
char *p;
|
|
grub_ssize_t len = 0;
|
|
int i;
|
|
|
|
newmod = grub_malloc (sizeof (*newmod));
|
|
if (!newmod)
|
|
return grub_errno;
|
|
newmod->start = start;
|
|
newmod->size = size;
|
|
newmod->next = 0;
|
|
|
|
for (i = 0; i < argc; i++)
|
|
len += grub_strlen (argv[i]) + 1;
|
|
|
|
if (len == 0)
|
|
len = 1;
|
|
|
|
newmod->cmdline = p = grub_malloc (len);
|
|
if (! newmod->cmdline)
|
|
{
|
|
grub_free (newmod);
|
|
return grub_errno;
|
|
}
|
|
newmod->cmdline_size = len;
|
|
total_modcmd += ALIGN_UP (len, 4);
|
|
|
|
for (i = 0; i < argc; i++)
|
|
{
|
|
p = grub_stpcpy (p, argv[i]);
|
|
*(p++) = ' ';
|
|
}
|
|
|
|
/* Remove the space after the last word. */
|
|
if (p != newmod->cmdline)
|
|
p--;
|
|
*p = '\0';
|
|
|
|
if (modules_last)
|
|
modules_last->next = newmod;
|
|
else
|
|
{
|
|
modules = newmod;
|
|
modules_last->next = NULL;
|
|
}
|
|
modules_last = newmod;
|
|
|
|
modcnt++;
|
|
|
|
return GRUB_ERR_NONE;
|
|
}
|
|
|
|
void
|
|
grub_multiboot_set_bootdev (void)
|
|
{
|
|
grub_uint32_t biosdev, slice = ~0, part = ~0;
|
|
grub_device_t dev;
|
|
|
|
#ifdef GRUB_MACHINE_PCBIOS
|
|
biosdev = grub_get_root_biosnumber ();
|
|
#else
|
|
biosdev = 0xffffffff;
|
|
#endif
|
|
|
|
if (biosdev == 0xffffffff)
|
|
return;
|
|
|
|
dev = grub_device_open (0);
|
|
if (dev && dev->disk && dev->disk->partition)
|
|
{
|
|
if (dev->disk->partition->parent)
|
|
{
|
|
part = dev->disk->partition->number;
|
|
slice = dev->disk->partition->parent->number;
|
|
}
|
|
else
|
|
slice = dev->disk->partition->number;
|
|
}
|
|
if (dev)
|
|
grub_device_close (dev);
|
|
|
|
bootdev = ((biosdev & 0xff) << 24) | ((slice & 0xff) << 16)
|
|
| ((part & 0xff) << 8) | 0xff;
|
|
bootdev_set = 1;
|
|
}
|