6a5a0b9139
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>
48 lines
880 B
ArmAsm
48 lines
880 B
ArmAsm
/*
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* linux/arch/sh/boot/romimage/head.S
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*
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* Board specific setup code, executed before zImage loader
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*/
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.text
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#include <asm/page.h>
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.global romstart
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romstart:
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/* include board specific setup code */
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#include <mach/romimage.h>
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/* copy the empty_zero_page contents to where vmlinux expects it */
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mova empty_zero_page_src, r0
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mov.l empty_zero_page_dst, r1
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mov #(PAGE_SHIFT - 4), r4
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mov #1, r3
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shld r4, r3 /* r3 = PAGE_SIZE / 16 */
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1:
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mov.l @r0, r4
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mov.l @(4, r0), r5
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mov.l @(8, r0), r6
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mov.l @(12, r0), r7
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add #16,r0
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mov.l r4, @r1
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mov.l r5, @(4, r1)
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mov.l r6, @(8, r1)
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mov.l r7, @(12, r1)
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dt r3
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add #16,r1
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bf 1b
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/* jump to the zImage entry point located after the zero page data */
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mov #PAGE_SHIFT, r4
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mov #1, r1
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shld r4, r1
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mova empty_zero_page_src, r0
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add r1, r0
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jmp @r0
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nop
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.align 2
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empty_zero_page_dst:
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.long _text
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empty_zero_page_src:
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