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x86: use ELF format in compressed images.

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Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Cc: Ian Campbell <ijc@hellion.org.uk>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: virtualization@lists.linux-foundation.org
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: virtualization@lists.linux-foundation.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Ian Campbell 2008-02-13 20:54:58 +00:00 • committed by Ingo Molnar
parent e0bf0f75bd
commit 099e137726
5 changed files with 95 additions and 1 deletions
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18
Documentation/i386/boot.txt
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@ -170,6 +170,8 @@ Offset Proto Name Meaning
0238/4 2.06+ cmdline_size Maximum size of the kernel command line
023C/4 2.07+ hardware_subarch Hardware subarchitecture
0240/8 2.07+ hardware_subarch_data Subarchitecture-specific data
0248/4 2.08+ compressed_payload_offset
024C/4 2.08+ compressed_payload_length
(1) For backwards compatibility, if the setup_sects field contains 0, the
real value is 4.
@ -512,6 +514,22 @@ Protocol: 2.07+
A pointer to data that is specific to hardware subarch
Field name: compressed_payload_offset
Type: read
Offset/size: 0x248/4
Protocol: 2.08+
If non-zero then this field contains the offset from the end of the
real-mode code to the compressed payload. The compression format
should be determined using the standard magic number, currently only
gzip is used.
Field name: compressed_payload_length
Type: read
Offset/size: 0x24c/4
Protocol: 2.08+
The length of the compressed payload.
**** THE KERNEL COMMAND LINE