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authorDavid Gibson <david@gibson.dropbear.id.au>2007-03-05 06:24:52 +0300
committerPaul Mackerras <paulus@samba.org>2007-03-13 05:35:01 +0300
commit79c8541924a220964f9f2cbed31eaa9fdb042eab (patch)
tree94e75bf65ea5cb0d40dfae7215ae432e1f914296 /arch/powerpc/boot/ops.h
parentad9d2716cfc1cda5a7e0d7bc0db45e3af8a4adbb (diff)
downloadlinux-79c8541924a220964f9f2cbed31eaa9fdb042eab.tar.xz
[POWERPC] zImage: Cleanup and improve prep_kernel()
This patch rewrites prep_kernel() in the zImage wrapper code to be clearer and more flexible. Notable changes: - Handling of the initrd image from prep_kernel() has moved into a new prep_initrd() function. - The address of the initrd image is now added as device tree properties, as the kernel expects. - We only copy a packaged initrd image to a new location if it is in danger of being clobbered when the kernel moves to its final location, instead of always. - By default we decompress the kernel directly to address 0, instead of requiring it to relocate itself. Platforms (such as OF) where doing this could clobber still-live firmware data structures can override the vmlinux_alloc hook to provide an alternate place to decompress the kernel. - We no longer pass lots of information between functions in global variables. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/boot/ops.h')
-rw-r--r--arch/powerpc/boot/ops.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/boot/ops.h b/arch/powerpc/boot/ops.h
index 8abb6516bb7c..fa62ff223e70 100644
--- a/arch/powerpc/boot/ops.h
+++ b/arch/powerpc/boot/ops.h
@@ -25,6 +25,7 @@ struct platform_ops {
void (*free)(void *ptr);
void * (*realloc)(void *ptr, unsigned long size);
void (*exit)(void);
+ void * (*vmlinux_alloc)(unsigned long size);
};
extern struct platform_ops platform_ops;