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2002-07-12 Yoshinori K. Okuji <okuji@enbug.org>

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* stage2/boot.c (load_image): Rewrite the Linux booting support
	radically. Now it should work even on a machine having, say,
	only 128KB, theoretically. Of course, GRUB itself doesn't work
	on such a system, though.
	(load_initrd): Initialize LH based on CUR_ADDR, because the
	location becomes dynamic.
	* stage2/shared.h (LINUX_MAX_SETUP_SECTS): Set to 64.
	(LINUX_HEAP_END_OFFSET): Set to (0x9000 - 0x200).
	(LINUX_STAGING_AREA): Removed.
	(LINUX_SETUP): Likewise.
	(LINUX_KERNEL): Likewise.
	(LINUX_KERNEL_MAXLEN): Likewise.
	(LINUX_SETUP_SEG): Likewise.
	(LINUX_INIT_SEG): Likewise.
	(LINUX_SETUP_STACK): Set to 0x9000.
	(LINUX_BZIMAGE_ADDR): New macro.
	(LINUX_ZIMAGE_ADDR): Likewise.
	(LINUX_OLD_REAL_MODE_ADDR): Likewise.
	(CL_MY_LOCATION): Removed.
	(CL_MY_END_ADDR): Likewise.
	(CL_BASE_ADDR): Likewise.
	(CL_MAGIC): Renamed to ...
	(LINUX_CL_MAGIC): ... this.
	(LINUX_CL_OFFSET): New macro.
	(LINUX_CL_END_OFFSET): Likewise.
	(LINUX_SETUP_MOVE_SIZE): Likewise.
	(struct linux_kernel_header): Change the type of the member
	"cmd_line_ptr" to char *.
	(linux_data_tmp_addr): Declared.
	(linux_data_real_addr): Likewise.
	* stage2/asm.S [!STAGE1_5] (linux_data_tmp_addr): New variable.
	[!STAGE1_5] (linux_data_real_addr): Likewise.
	[!STAGE1_5] (big_linux_boot): Copy the real mode part from
	LINUX_DATA_TMP_ADDR to LINUX_DATA_REAL_ADDR.
	* grub/asmstub.c (linux_data_tmp_addr): New variable.
	(linux_data_real_addr): Likewise.
This commit is contained in:
okuji 2002-07-12 09:55:55 +00:00
parent f8b4503f1b
commit 51955d52d8
6 changed files with 158 additions and 88 deletions
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@ -1,3 +1,42 @@
2002-07-12 Yoshinori K. Okuji <okuji@enbug.org>
* stage2/boot.c (load_image): Rewrite the Linux booting support
radically. Now it should work even on a machine having, say,
only 128KB, theoretically. Of course, GRUB itself doesn't work
on such a system, though.
(load_initrd): Initialize LH based on CUR_ADDR, because the
location becomes dynamic.
* stage2/shared.h (LINUX_MAX_SETUP_SECTS): Set to 64.
(LINUX_HEAP_END_OFFSET): Set to (0x9000 - 0x200).
(LINUX_STAGING_AREA): Removed.
(LINUX_SETUP): Likewise.
(LINUX_KERNEL): Likewise.
(LINUX_KERNEL_MAXLEN): Likewise.
(LINUX_SETUP_SEG): Likewise.
(LINUX_INIT_SEG): Likewise.
(LINUX_SETUP_STACK): Set to 0x9000.
(LINUX_BZIMAGE_ADDR): New macro.
(LINUX_ZIMAGE_ADDR): Likewise.
(LINUX_OLD_REAL_MODE_ADDR): Likewise.
(CL_MY_LOCATION): Removed.
(CL_MY_END_ADDR): Likewise.
(CL_BASE_ADDR): Likewise.
(CL_MAGIC): Renamed to ...
(LINUX_CL_MAGIC): ... this.
(LINUX_CL_OFFSET): New macro.
(LINUX_CL_END_OFFSET): Likewise.
(LINUX_SETUP_MOVE_SIZE): Likewise.
(struct linux_kernel_header): Change the type of the member
"cmd_line_ptr" to char *.
(linux_data_tmp_addr): Declared.
(linux_data_real_addr): Likewise.
* stage2/asm.S [!STAGE1_5] (linux_data_tmp_addr): New variable.
[!STAGE1_5] (linux_data_real_addr): Likewise.
[!STAGE1_5] (big_linux_boot): Copy the real mode part from
LINUX_DATA_TMP_ADDR to LINUX_DATA_REAL_ADDR.
* grub/asmstub.c (linux_data_tmp_addr): New variable.
(linux_data_real_addr): Likewise.
2002-07-09 Yoshinori K. Okuji <okuji@enbug.org>
From Mark Kettenis <kettenis@chello.nl>: