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| author | Michael Brown | 2009-03-30 12:32:28 +0200 |
|---|---|---|
| committer | Michael Brown | 2009-03-30 12:42:19 +0200 |
| commit | abc13af0704a131f6eb165eefd977d2b8293a028 (patch) | |
| tree | 98314de87c7b83fe70eee4b07d49ce2d8e6bb9a9 /src/arch/i386/include | |
| parent | [build] Avoid always rebuilding bin/embedded.o (diff) | |
| download | ipxe-abc13af0704a131f6eb165eefd977d2b8293a028.tar.gz ipxe-abc13af0704a131f6eb165eefd977d2b8293a028.tar.xz ipxe-abc13af0704a131f6eb165eefd977d2b8293a028.zip | |
[bzimage] Support old (pre-2.00 bootloader) Linux kernel formats
This allows gPXE to load memtest86, which is packaged as an old kernel.
Split all code that directly touches the kernel headers out into
bzimage_parse_header() and bzimage_update_header(), to reduce code
size and offset the cost of supporting older kernels.
Total cost of this feature: 11 bytes (uncompressed).
Diffstat (limited to 'src/arch/i386/include')
| -rw-r--r-- | src/arch/i386/include/bzimage.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/arch/i386/include/bzimage.h b/src/arch/i386/include/bzimage.h index aee058ae3..99fa09635 100644 --- a/src/arch/i386/include/bzimage.h +++ b/src/arch/i386/include/bzimage.h @@ -75,6 +75,9 @@ struct bzimage_header { /** Offset of bzImage header within kernel image */ #define BZI_HDR_OFFSET 0x1f1 +/** bzImage boot flag value */ +#define BZI_BOOT_FLAG 0xaa55 + /** bzImage magic signature value */ #define BZI_SIGNATURE 0x53726448 |