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comply with the linux/i386 boot protocol version 2.02.

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okuji 2000-07-23 21:21:37 +00:00
parent a4a19300f1
commit c786d8603e
5 changed files with 166 additions and 54 deletions
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@ -1,3 +1,43 @@
2000-07-24 OKUJI Yoshinori <okuji@gnu.org>
Comply with the Linux/i386 boot protocol version 2.02.
* stage2/asm.S [!STAGE1_5] (linux_boot): Set the length of moved
bytes to LINUX_KERNEL_MAXLEN instead of
LINUX_KERNEL_LEN_OFFSET(%eax), since the field is obsolete.
[!STAGE1_5] (big_linux_boot): Don't use SEGMENT or OFFSET.
Instead, embed the segment and the offset in the code itself.
Set %ds, %es, %fs and %gs to %ax (LINUX_INIT_SEG).
* stage2/boot.c (load_image): Rewrite the Linux support code
heavily. Use a structure instead of a batch of macros, to access
a Linux kernel header.
(load_initrd): If MOVETO plus LEN is greater than or equal to
LINUX_INITRD_MAX_ADDRESS, set MOVETO to LINUX_INITRD_MAX_ADDRESS
minus LEN with page aligned.
* stage2/shared.h (LINUX_MAGIC_SIGNATURE): New macro.
(LINUX_DEFAULT_SETUP_SECTS): Likewise.
(LINUX_FLAG_CAN_USE_HEAP): Likewise.
(LINUX_INITRD_MAX_ADDRESS): Likewise.
(LINUX_MAX_SETUP_SECTS): Likewise.
(LINUX_BOOT_LOADER_TYPE): Likewise.
(LINUX_HEAP_END_OFFSET): Likewise.
(LINUX_SETUP_MAXLEN): Removed.
(LINUX_KERNEL_LEN_OFFSET): Likewise.
(LINUX_SETUP_LEN_OFFSET): Likewise.
(LINUX_SETUP_STACK): Set to 0x7F00 instead of 0x3FF4 (why was it
this value?).
(LINUX_SETUP_LOADER): Removed.
(LINUX_SETUP_LOAD_FLAGS): Likewise.
(LINUX_SETUP_CODE_START): Likewise.
(LINUX_SETUP_INITRD): Likewise.
(CL_MY_LOCATION): Set to RAW_ADDR(0x97F00) instead of
RAW_ADDR(0x92000).
(CL_MY_END_ADDR): Set to RAW_addr(0x97FFF) instead of
RAW_ADDR(0x920FF).
(CL_MAGIC_ADDR): Removed.
(CL_OFFSET): Likewise.
[!ASM_FILE] (struct linux_kernel_header): New structure tag.
2000-07-23 OKUJI Yoshinori <okuji@gnu.org>
* docs/tutorial.texi: Fix some syntax errors and ambiguous