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authorMagnus Damm <damm@opensource.se>2009-12-04 06:42:35 +0000
committerPaul Mundt <lethal@linux-sh.org>2009-12-04 16:26:20 +0900
commit6a5a0b9139b19dd1a107870269a35bc9cf18d2dc (patch)
tree6212ed4ee2d0cc3f84edd26173bad5c4d6470338 /arch/sh/boot/romimage/head.S
parent6e8a0d11a088ed51b1b649d3a1127a7bda3700a0 (diff)
sh: include empty zero page in romImage
This patch updates the romImage code to include the empty_zero_page contents from vmlinux. Without this patch the empty zero page is lef uninitialized. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/boot/romimage/head.S')
-rw-r--r--arch/sh/boot/romimage/head.S38
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/sh/boot/romimage/head.S b/arch/sh/boot/romimage/head.S
index 219bc626dd71..93e779a405ec 100644
--- a/arch/sh/boot/romimage/head.S
+++ b/arch/sh/boot/romimage/head.S
@@ -5,6 +5,44 @@
*/
.text
+ #include <asm/page.h>
+
.global romstart
romstart:
+ /* include board specific setup code */
#include <mach/romimage.h>
+
+ /* copy the empty_zero_page contents to where vmlinux expects it */
+ mova empty_zero_page_src, r0
+ mov.l empty_zero_page_dst, r1
+ mov #(PAGE_SHIFT - 4), r4
+ mov #1, r3
+ shld r4, r3 /* r3 = PAGE_SIZE / 16 */
+
+1:
+ mov.l @r0, r4
+ mov.l @(4, r0), r5
+ mov.l @(8, r0), r6
+ mov.l @(12, r0), r7
+ add #16,r0
+ mov.l r4, @r1
+ mov.l r5, @(4, r1)
+ mov.l r6, @(8, r1)
+ mov.l r7, @(12, r1)
+ dt r3
+ add #16,r1
+ bf 1b
+
+ /* jump to the zImage entry point located after the zero page data */
+ mov #PAGE_SHIFT, r4
+ mov #1, r1
+ shld r4, r1
+ mova empty_zero_page_src, r0
+ add r1, r0
+ jmp @r0
+ nop
+
+ .align 2
+empty_zero_page_dst:
+ .long _text
+empty_zero_page_src: