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| author | H. Peter Anvin <hpa@zytor.com> | 2008-05-30 17:19:03 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2008-05-30 17:19:03 -0700 |
| commit | 23deb06821442506615f34bd92ccd6a2422629d7 (patch) | |
| tree | 5e95dba1471007a161e19844fab2d60d422f5423 /Documentation/x86/i386/zero-page.txt | |
| parent | 4039feb5bae72a5fed9ba6bc1a9cfd8dfe0a8613 (diff) | |
x86: move x86-specific documentation into Documentation/x86
The current organization of the x86 documentation makes it appear as
if the "i386" documentation doesn't apply to x86-64, which is does.
Thus, move that documentation into Documentation/x86, and move the
x86-64-specific stuff into Documentation/x86/x86_64 with the eventual
goal to move stuff that isn't actually 64-bit specific back into
Documentation/x86.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'Documentation/x86/i386/zero-page.txt')
| -rw-r--r-- | Documentation/x86/i386/zero-page.txt | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/Documentation/x86/i386/zero-page.txt b/Documentation/x86/i386/zero-page.txt new file mode 100644 index 00000000000..169ad423a3d --- /dev/null +++ b/Documentation/x86/i386/zero-page.txt @@ -0,0 +1,31 @@ +The additional fields in struct boot_params as a part of 32-bit boot +protocol of kernel. These should be filled by bootloader or 16-bit +real-mode setup code of the kernel. References/settings to it mainly +are in: + + include/asm-x86/bootparam.h + + +Offset Proto Name Meaning +/Size + +000/040 ALL screen_info Text mode or frame buffer information + (struct screen_info) +040/014 ALL apm_bios_info APM BIOS information (struct apm_bios_info) +060/010 ALL ist_info Intel SpeedStep (IST) BIOS support information + (struct ist_info) +080/010 ALL hd0_info hd0 disk parameter, OBSOLETE!! +090/010 ALL hd1_info hd1 disk parameter, OBSOLETE!! +0A0/010 ALL sys_desc_table System description table (struct sys_desc_table) +140/080 ALL edid_info Video mode setup (struct edid_info) +1C0/020 ALL efi_info EFI 32 information (struct efi_info) +1E0/004 ALL alk_mem_k Alternative mem check, in KB +1E4/004 ALL scratch Scratch field for the kernel setup code +1E8/001 ALL e820_entries Number of entries in e820_map (below) +1E9/001 ALL eddbuf_entries Number of entries in eddbuf (below) +1EA/001 ALL edd_mbr_sig_buf_entries Number of entries in edd_mbr_sig_buffer + (below) +290/040 ALL edd_mbr_sig_buffer EDD MBR signatures +2D0/A00 ALL e820_map E820 memory map table + (array of struct e820entry) +D00/1EC ALL eddbuf EDD data (array of struct edd_info) |