diff options
| author | Magnus Damm <damm@opensource.se> | 2009-12-04 06:42:35 (GMT) |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-12-04 07:26:20 (GMT) |
| commit | 6a5a0b9139b19dd1a107870269a35bc9cf18d2dc (patch) | |
| tree | 6212ed4ee2d0cc3f84edd26173bad5c4d6470338 /arch/sh/boot/romimage/head.S | |
| parent | 6e8a0d11a088ed51b1b649d3a1127a7bda3700a0 (diff) | |
| download | linux-6a5a0b9139b19dd1a107870269a35bc9cf18d2dc.tar.xz | |
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.S | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/sh/boot/romimage/head.S b/arch/sh/boot/romimage/head.S index 219bc62..93e779a 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: |