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change the location of the boot partition table.

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This commit is contained in:
okuji 2000-02-22 07:25:17 +00:00
parent c62dcb6fa0
commit a936d03921
5 changed files with 39 additions and 11 deletions
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18
ChangeLog
View file

@ -1,3 +1,21 @@
2000-02-21 OKUJI Yoshinori <okuji@gnu.org>
* stage2/disk_io.c (check_BSD_parts) [!STAGE1_5]: Use the term
"BSD sub-partition" instead of "BSD slice" for consistency.
* stage2/builtins.c (boot_func): Copy the partition table to
BOOT_PART_TABLE instead of (BOOTSEC_LOCATION +
BOOTSEC_PART_OFFSET). Don't use grub_memmove, but copy it
directly, since memcheck is too strict.
* stage2/disk_io.c (real_open_partition) [!STAGE1_5]: Set
CUR_PART_ADDR to (BOOT_PART_TABLE + (i << 4)).
* stage2/shared.h (BOOT_PART_TABLE): New macro.
(chain_stage1): Change the types of all the arguments to
unsigned long.
(chain_stage2): Likewise.
* grub/asmstub.c (chain_stage1): Adjusted to the prototype.
(chain_stage2): Likewise.
2000-02-21 OKUJI Yoshinori <okuji@gnu.org>
* stage2/disk_io.c (check_BSD_parts) [!STAGE1_5]: If the BSD

5
grub/asmstub.c
View file

@ -580,14 +580,15 @@ stop (void)
/* calls for direct boot-loader chaining */
void
chain_stage1 (int segment, int offset, int part_table_addr)
chain_stage1 (unsigned long segment, unsigned long offset,
unsigned long part_table_addr)
{
stop ();
}
void
chain_stage2 (int segment, int offset)
chain_stage2 (unsigned long segment, unsigned long offset)
{
stop ();
}

15
stage2/builtins.c
View file

@ -218,10 +218,12 @@ boot_func (char *arg, int flags)
gateA20 (0);
boot_drive = saved_drive;
/* Copy the boot partition information to the chain-loader, if
/* Copy the boot partition information to 0x7be-0x7fd, if
BOOT_DRIVE is a hard disk drive. */
if (boot_drive & 0x80)
{
char *dst, *src;
/* Read the MBR here, because it might be modified
after opening the partition. */
if (! rawread (boot_drive, boot_part_offset,
@ -232,10 +234,13 @@ boot_func (char *arg, int flags)
return 0;
}
/* Need only the partition table. */
grub_memmove ((char *) BOOTSEC_LOCATION + BOOTSEC_PART_OFFSET,
(char *) SCRATCHADDR + BOOTSEC_PART_OFFSET,
BOOTSEC_PART_LENGTH);
/* Need only the partition table.
XXX: We cannot use grub_memmove because BOOT_PART_TABLE
(0x07be) is less than 0x1000. */
dst = (char *) BOOT_PART_TABLE;
src = (char *) SCRATCHADDR + BOOTSEC_PART_OFFSET;
while (dst < (char *) BOOT_PART_TABLE + BOOTSEC_PART_LENGTH)
*dst++ = *src++;
}
chain_stage1 (0, BOOTSEC_LOCATION, boot_part_addr);

4
stage2/disk_io.c
View file

@ -485,7 +485,7 @@ check_BSD_parts (int flags)
if (flags)
{
if (! do_completion)
grub_printf (" No BSD slice found, partition type 0x%x\n",
grub_printf (" No BSD sub-partition found, partition type 0x%x\n",
current_slice);
}
#endif
@ -571,7 +571,7 @@ real_open_partition (int flags)
part_length = PC_SLICE_LENGTH (mbr_buf, i);
#ifndef STAGE1_5
cur_part_offset = part_offset;
cur_part_addr = BOOTSEC_LOCATION + PC_SLICE_OFFSET + (i << 4);
cur_part_addr = BOOT_PART_TABLE + (i << 4);
#endif
/*

8
stage2/shared.h
View file

@ -69,6 +69,8 @@ extern char *grub_scratch_mem;
#define BUFFERADDR RAW_ADDR (0x70000)
#define BUFFERSEG RAW_SEG (0x7000)
#define BOOT_PART_TABLE RAW_ADDR (0x07be)
/*
* BIOS disk defines
*/
@ -557,9 +559,11 @@ extern unsigned short ascii_key_map[];
extern unsigned short io_map[];
/* calls for direct boot-loader chaining */
void chain_stage1 (int segment, int offset, int part_table_addr)
void chain_stage1 (unsigned long segment, unsigned long offset,
unsigned long part_table_addr)
__attribute__ ((noreturn));
void chain_stage2 (unsigned long segment, unsigned long offset)
__attribute__ ((noreturn));
void chain_stage2 (int segment, int offset) __attribute__ ((noreturn));
/* do some funky stuff, then boot linux */
void linux_boot (void) __attribute__ ((noreturn));