x86, boot: determine compressed code offset at compile time

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Determine the compressed code offset (from the kernel runtime address)
at compile time.  This allows some minor optimizations in
arch/x86/boot/compressed/head_*.S, but more importantly it makes this
value available to the build process, which will enable a future patch
to export the necessary linear memory footprint into the bzImage
header.

[ Impact: cleanup, future patch enabling ]

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

...

This commit is contained in:

H. Peter Anvin 2009-05-08 17:42:16 -07:00

parent 36d3793c94

commit 02a884c0fe

5 changed files with 123 additions and 60 deletions

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11

arch/x86/boot/compressed/Makefile

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24

arch/x86/boot/compressed/head_32.S

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41

arch/x86/boot/compressed/head_64.S

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97

arch/x86/boot/compressed/mkpiggy.c

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10

arch/x86/boot/compressed/vmlinux.scr

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