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make the LBA support bitmap checks configurable at the installation time.

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okuji 2000-04-18 11:22:07 +00:00
parent 215f9012d5
commit 92fca67cf5
15 changed files with 283 additions and 216 deletions
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@ -1,3 +1,58 @@
2000-04-17 OKUJI Yoshinori <okuji@gnu.org>
The user doesn't have to recompile GRUB for his/her buggy BIOS
any longer. It is configurable to ignore the LBA support bitmap
at the installation time.
* stage1/stage1.S (force_lba): New variable.
(stage2_address): Moved forwards, to align some variables in
natural boundaries.
(real_start): Check if FORCE_LBA is non-zero, if so, jump to
skip_lba_bitmap_check, otherwise, check if bit 0 of the support
bitmap is non-zero.
Don't use #ifdef for CHECK_LBA_SUPPORT_BITMAP.
(skip_lba_bitmap_check): New label.
* stage1/stage1.h (COMPAT_VERSION_MINOR): Set to 1.
(STAGE1_FORCE_LBA): New macro.
(STAGE1_STAGE2_ADDRESS): Set to 0x42.
(STAGE1_STAGE2_SECTOR): Set to 0x44.
(STAGE1_STAGE2_SEGMENT): Set to 0x48.
* stage2/asm.S (force_lba): New variable.
* stage2/bios.c (get_diskinfo): Don't use #ifdef for
CHECK_LBA_SUPPORT_BITMAP. Instead, check if FORCE_LBA is
non-zero. If so, don't check the bit 0 of DRP.FLAG.
* stage2/builtins.c (install_func): Check if a new option
`--force-lba' is specified. If specified, set IS_FORCE_LBA to 1
and set ARG to a value returned by skip_to. Otherwise,
IS_FORCE_LBA is zero.
Set the "force LBA" flag in STAGE1_BUFFER (the offset is
STAGE1_FORCE_LBA) to IS_FORCE_LBA.
Likewise, set the "force LBA" flag in STAGE2_SECOND_BUFFER
(the offset is STAGE2_FORCE_LBA) to IS_FORCE_LBA.
If IS_STAGE1_5 is true, then modify the Stage2, regardless of
the presence of the option REAL_CONFIG_FILE. Set the "force LBA"
flag in SCRATCHADDR (the offset is STAGE2_FORCE_LBA) to
IS_FORCE_LBA.
(builtin_install): Added description about `--force-lba' into
the docs.
(setup_func): Check if `--force-lba' is specified in ARG. If
specified, set IS_FORCE_LBA to 1 and set ARG to a value returned
by skip_to. Otherwise, IS_FORCE_LBA is zero.
If IS_FORCE_LBA is true, prepend "--force-lba " to CMD_ARG.
(builtin_setup): Added descriptions about `--force-lba' into the
docs.
* stage2/shared.h (STAGE2_FORCE_LBA): New macro.
(STAGE2_VER_STR_OFFS): Set to 0xe.
(force_lba): Declared.
* util/grub-install.in (force_lba): New variable. Set to an
empty sting by default.
(usage): Added a description about `--force-lba'.
(--force-lba): Checked in the option handling code. If
specified, set FORCE_LBA to "--force-lba".
Run the command "setup" with $force_lba added before
$install_drive.
* configure.in (--disable-lba-support-bitmap): Removed.
2000-04-15 OKUJI Yoshinori <okuji@gnu.org>
* util/grub-install.in (root_device): Append `/' to ${rootdir},