[-next] x86, doc: Add LZ4 magic number for the new compression
diff mbox

Message ID 1366952933-31331-1-git-send-email-kyungsik.lee@lge.com
State New, archived
Headers show

Commit Message

Kyungsik Lee April 26, 2013, 5:08 a.m. UTC
Documentation/x86/boot.txt is updated to list the LZ4 magic number.
This LZ4 magic number is used for the new compression format.

Signed-off-by: Kyungsik Lee <kyungsik.lee@lge.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Florian Fainelli <florian@openwrt.org>
Cc: Yann Collet <yann.collet.73@gmail.com>
---
 Documentation/x86/boot.txt | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

Comments

H. Peter Anvin April 26, 2013, 8:19 p.m. UTC | #1
On 04/25/2013 10:08 PM, Kyungsik Lee wrote:
> Documentation/x86/boot.txt is updated to list the LZ4 magic number.
> This LZ4 magic number is used for the new compression format.
> 
> Signed-off-by: Kyungsik Lee <kyungsik.lee@lge.com>
> Cc: "H. Peter Anvin" <hpa@zytor.com>
> Cc: Ingo Molnar <mingo@elte.hu>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Russell King <rmk@arm.linux.org.uk>
> Cc: Borislav Petkov <bp@alien8.de>
> Cc: Florian Fainelli <florian@openwrt.org>
> Cc: Yann Collet <yann.collet.73@gmail.com>
> ---
>  Documentation/x86/boot.txt | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/Documentation/x86/boot.txt b/Documentation/x86/boot.txt
> index 3840b6f..fc66d42 100644
> --- a/Documentation/x86/boot.txt
> +++ b/Documentation/x86/boot.txt
> @@ -657,9 +657,10 @@ Protocol:	2.08+
>    uncompressed data should be determined using the standard magic
>    numbers.  The currently supported compression formats are gzip
>    (magic numbers 1F 8B or 1F 9E), bzip2 (magic number 42 5A), LZMA
> -  (magic number 5D 00), and XZ (magic number FD 37).  The uncompressed
> -  payload is currently always ELF (magic number 7F 45 4C 46).
> -  
> +  (magic number 5D 00), XZ (magic number FD 37), and LZ4 (magic number
> +  02 21).  The uncompressed payload is currently always ELF (magic
> +  number 7F 45 4C 46).
> +
>  Field name:	payload_length
>  Type:		read
>  Offset/size:	0x24c/4
> 

Acked-by: H. Peter Anvin <hpa@linux.intel.com>

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Patch
diff mbox

diff --git a/Documentation/x86/boot.txt b/Documentation/x86/boot.txt
index 3840b6f..fc66d42 100644
--- a/Documentation/x86/boot.txt
+++ b/Documentation/x86/boot.txt
@@ -657,9 +657,10 @@  Protocol:	2.08+
   uncompressed data should be determined using the standard magic
   numbers.  The currently supported compression formats are gzip
   (magic numbers 1F 8B or 1F 9E), bzip2 (magic number 42 5A), LZMA
-  (magic number 5D 00), and XZ (magic number FD 37).  The uncompressed
-  payload is currently always ELF (magic number 7F 45 4C 46).
-  
+  (magic number 5D 00), XZ (magic number FD 37), and LZ4 (magic number
+  02 21).  The uncompressed payload is currently always ELF (magic
+  number 7F 45 4C 46).
+
 Field name:	payload_length
 Type:		read
 Offset/size:	0x24c/4