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| author | Srikant Patnaik | 2015-01-13 15:08:24 +0530 |
|---|---|---|
| committer | Srikant Patnaik | 2015-01-13 15:08:24 +0530 |
| commit | 97327692361306d1e6259021bc425e32832fdb50 (patch) | |
| tree | fe9088f3248ec61e24f404f21b9793cb644b7f01 /arch/sh/boot/romimage/head.S | |
| parent | 2d05a8f663478a44e088d122e0d62109bbc801d0 (diff) | |
| parent | a3a8b90b61e21be3dde9101c4e86c881e0f06210 (diff) | |
| download | FOSSEE-netbook-kernel-source-97327692361306d1e6259021bc425e32832fdb50.tar.gz FOSSEE-netbook-kernel-source-97327692361306d1e6259021bc425e32832fdb50.tar.bz2 FOSSEE-netbook-kernel-source-97327692361306d1e6259021bc425e32832fdb50.zip | |
dirty fix to merging
Diffstat (limited to 'arch/sh/boot/romimage/head.S')
| -rw-r--r-- | arch/sh/boot/romimage/head.S | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/arch/sh/boot/romimage/head.S b/arch/sh/boot/romimage/head.S new file mode 100644 index 00000000..4671d1b8 --- /dev/null +++ b/arch/sh/boot/romimage/head.S @@ -0,0 +1,84 @@ +/* + * linux/arch/sh/boot/romimage/head.S + * + * Board specific setup code, executed before zImage loader + */ + +.text + #include <asm/page.h> + + .global romstart +romstart: + /* include board specific setup code */ +#include <mach/romimage.h> + +#ifdef CONFIG_ROMIMAGE_MMCIF + /* load the romImage to above the empty zero page */ + mov.l empty_zero_page_dst, r4 + mov.l empty_zero_page_dst_adj, r5 + add r5, r4 + mov.l bytes_to_load, r5 + mov.l loader_function, r7 + jsr @r7 + mov r4, r15 + + mov.l empty_zero_page_dst, r4 + mov.l empty_zero_page_dst_adj, r5 + add r5, r4 + mov.l loaded_code_offs, r5 + add r5, r4 + jmp @r4 + nop + + .balign 4 +empty_zero_page_dst_adj: + .long PAGE_SIZE +bytes_to_load: + .long end_data - romstart +loader_function: + .long mmcif_loader +loaded_code_offs: + .long loaded_code - romstart +loaded_code: +#endif /* CONFIG_ROMIMAGE_MMCIF */ + + /* copy the empty_zero_page contents to where vmlinux expects it */ + mova extra_data_pos, r0 + mov.l extra_data_size, r1 + add r1, 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 extra_data_pos, r0 + add r1, r0 + mov.l extra_data_size, r1 + add r1, r0 + jmp @r0 + nop + + .align 2 +empty_zero_page_dst: + .long _text +extra_data_pos: +extra_data_size: + .long zero_page_pos - extra_data_pos |