mirror of
https://git.savannah.gnu.org/git/grub.git
synced 2026-10-24 08:09:22 +00:00
build process is cleaned up
This commit is contained in:
okuji committed
1 parent
bd6d015f8e
commit
9350d46a2a
54 files changed
+1479
-1649
No files matched your search
+219
@@ -0,0 +1,219 @@
|
||||
/* common.c - miscellaneous shared variables and routines */
|
||||
/*
|
||||
* GRUB -- GRand Unified Bootloader
|
||||
* Copyright (C) 1996 Erich Boleyn <erich@uruk.org>
|
||||
* Copyright (C) 1999 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 "shared.h"
|
||||
|
||||
/*
|
||||
* Shared BIOS/boot data.
|
||||
*/
|
||||
|
||||
struct multiboot_info mbi;
|
||||
unsigned long saved_drive;
|
||||
unsigned long saved_partition;
|
||||
unsigned long saved_mem_upper;
|
||||
|
||||
/*
|
||||
* Error code stuff.
|
||||
*/
|
||||
|
||||
grub_error_t errnum = ERR_NONE;
|
||||
|
||||
#ifndef STAGE1_5
|
||||
|
||||
char *err_list[] =
|
||||
{
|
||||
[ERR_NONE] = 0,
|
||||
[ERR_BAD_FILENAME] =
|
||||
"Bad filename (must be absolute pathname or blocklist)",
|
||||
[ERR_BAD_FILETYPE] = "Bad file or directory type",
|
||||
[ERR_BAD_GZIP_DATA] = "Bad or corrupt data while decompressing file",
|
||||
[ERR_BAD_GZIP_HEADER] = "Bad or incompatible header on compressed file",
|
||||
[ERR_BAD_PART_TABLE] = "Partition table invalid or corrupt",
|
||||
[ERR_BAD_VERSION] = "Bad or corrupt version of stage1/stage2",
|
||||
[ERR_BELOW_1MB] = "Loading below 1MB is not supported",
|
||||
[ERR_BOOT_COMMAND] = "Cannot boot without kernel loaded",
|
||||
[ERR_BOOT_FAILURE] = "Unknown boot failure",
|
||||
[ERR_BOOT_FEATURES] = "Unsupported Multiboot features requested",
|
||||
[ERR_DEV_FORMAT] = "Device string unrecognizable",
|
||||
[ERR_DEV_VALUES] = "Invalid device requested",
|
||||
[ERR_EXEC_FORMAT] = "Invalid or unsupported executable format",
|
||||
[ERR_FILELENGTH] =
|
||||
"Filesystem compatibility error, cannot read whole file",
|
||||
[ERR_FILE_NOT_FOUND] = "File not found",
|
||||
[ERR_FSYS_CORRUPT] = "Inconsistent filesystem structure",
|
||||
[ERR_FSYS_MOUNT] = "Cannot mount selected partition",
|
||||
[ERR_GEOM] = "Selected cylinder exceeds maximum supported by BIOS",
|
||||
[ERR_NEED_LX_KERNEL] = "Must load Linux kernel before initrd",
|
||||
[ERR_NEED_MB_KERNEL] = "Must load Multiboot kernel before modules",
|
||||
[ERR_NO_DISK] = "Selected disk does not exist",
|
||||
[ERR_NO_PART] = "No such partition",
|
||||
[ERR_NUMBER_PARSING] = "Error while parsing number",
|
||||
[ERR_OUTSIDE_PART] = "Attempt to access block outside partition",
|
||||
[ERR_READ] = "Disk read error",
|
||||
[ERR_SYMLINK_LOOP] = "Too many symbolic links",
|
||||
[ERR_UNRECOGNIZED] = "Unrecognized command",
|
||||
[ERR_WONT_FIT] = "Selected item cannot fit into memory",
|
||||
[ERR_WRITE] = "Disk write error",
|
||||
};
|
||||
|
||||
|
||||
/* static for BIOS memory map fakery */
|
||||
static struct AddrRangeDesc fakemap[3] =
|
||||
{
|
||||
{20, 0, 0, 0, 0, MB_ARD_MEMORY},
|
||||
{20, 0x100000, 0, 0, 0, MB_ARD_MEMORY},
|
||||
{20, 0x1000000, 0, 0, 0, MB_ARD_MEMORY}
|
||||
};
|
||||
#endif /* STAGE1_5 */
|
||||
|
||||
|
||||
/*
|
||||
* This queries for BIOS information.
|
||||
*/
|
||||
|
||||
void
|
||||
init_bios_info (void)
|
||||
{
|
||||
#ifndef STAGE1_5
|
||||
int cont, memtmp, addr;
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Get information from BIOS on installed RAM.
|
||||
*/
|
||||
|
||||
mbi.mem_lower = get_memsize (0);
|
||||
mbi.mem_upper = get_memsize (1);
|
||||
|
||||
#ifndef STAGE1_5
|
||||
/*
|
||||
* We need to call this somewhere before trying to put data
|
||||
* above 1 MB, since without calling it, address line 20 will be wired
|
||||
* to 0. Not too desirable.
|
||||
*/
|
||||
|
||||
gateA20 (1);
|
||||
|
||||
/*
|
||||
* The "mbi.mem_upper" variable only recognizes upper memory in the
|
||||
* first memory region. If there are multiple memory regions,
|
||||
* the rest are reported to a Multiboot-compliant OS, but otherwise
|
||||
* unused by GRUB.
|
||||
*/
|
||||
|
||||
addr = get_code_end ();
|
||||
mbi.mmap_addr = addr;
|
||||
mbi.mmap_length = 0;
|
||||
cont = 0;
|
||||
|
||||
do
|
||||
{
|
||||
cont = get_mmap_entry ((void *) addr, cont);
|
||||
|
||||
/* If the returned buffer's base is zero, quit. */
|
||||
if (!*((int *) addr))
|
||||
break;
|
||||
|
||||
mbi.mmap_length += *((int *) addr) + 4;
|
||||
addr += *((int *) addr) + 4;
|
||||
}
|
||||
while (cont);
|
||||
|
||||
if (mbi.mmap_length)
|
||||
{
|
||||
/*
|
||||
* This is to get the upper memory up to the first memory
|
||||
* hole into the "mbi.mem_upper" element, for OS's that
|
||||
* don't care about the memory map, but might care about
|
||||
* RAM above 64MB.
|
||||
*
|
||||
* A big problem is that the memory areas aren't guaranteed
|
||||
* to be: (1) contiguous, (2) sorted in ascending order, or
|
||||
* (3) non-overlapping.
|
||||
*/
|
||||
memtmp = 0x100000;
|
||||
|
||||
do
|
||||
{
|
||||
for (cont = 0, addr = mbi.mmap_addr;
|
||||
addr < mbi.mmap_addr + mbi.mmap_length;
|
||||
addr += *((int *) addr) + 4)
|
||||
{
|
||||
if (((struct AddrRangeDesc *) addr)->BaseAddrHigh == 0
|
||||
&& ((struct AddrRangeDesc *) addr)->Type == MB_ARD_MEMORY
|
||||
&& ((struct AddrRangeDesc *) addr)->BaseAddrLow <= memtmp
|
||||
&& (((struct AddrRangeDesc *) addr)->BaseAddrLow
|
||||
+ ((struct AddrRangeDesc *) addr)->LengthLow) > memtmp)
|
||||
{
|
||||
memtmp = (((struct AddrRangeDesc *) addr)->BaseAddrLow
|
||||
+ ((struct AddrRangeDesc *) addr)->LengthLow);
|
||||
cont++;
|
||||
}
|
||||
}
|
||||
}
|
||||
while (cont);
|
||||
|
||||
mbi.mem_upper = (memtmp - 0x100000) >> 10;
|
||||
}
|
||||
else if ((memtmp = get_eisamemsize ()) != -1)
|
||||
{
|
||||
cont = memtmp & ~0xFFFF;
|
||||
memtmp = memtmp & 0xFFFF;
|
||||
|
||||
if (!cont || (memtmp == 0x3c00))
|
||||
memtmp += (cont >> 10);
|
||||
else
|
||||
{
|
||||
/* XXX should I do this at all ??? */
|
||||
|
||||
mbi.mmap_addr = (int) fakemap;
|
||||
mbi.mmap_length = sizeof (fakemap);
|
||||
fakemap[0].LengthLow = (mbi.mem_lower << 10);
|
||||
fakemap[1].LengthLow = (memtmp << 10);
|
||||
fakemap[2].LengthLow = cont;
|
||||
}
|
||||
|
||||
mbi.mem_upper = memtmp;
|
||||
}
|
||||
|
||||
saved_mem_upper = mbi.mem_upper;
|
||||
|
||||
/*
|
||||
* Initialize other Multiboot Info flags.
|
||||
*/
|
||||
|
||||
mbi.flags = MB_INFO_MEMORY | MB_INFO_CMDLINE | MB_INFO_BOOTDEV;
|
||||
|
||||
#endif /* STAGE1_5 */
|
||||
|
||||
/*
|
||||
* Set boot drive and partition.
|
||||
*/
|
||||
|
||||
saved_drive = boot_drive;
|
||||
saved_partition = install_partition;
|
||||
|
||||
/*
|
||||
* Start main routine here.
|
||||
*/
|
||||
|
||||
cmain ();
|
||||
}
|
||||
Reference in new issue
Block a user