diff options
author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/sh/boot/romimage/head.S | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/sh/boot/romimage/head.S')
-rw-r--r-- | kernel/arch/sh/boot/romimage/head.S | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/kernel/arch/sh/boot/romimage/head.S b/kernel/arch/sh/boot/romimage/head.S new file mode 100644 index 000000000..4671d1b82 --- /dev/null +++ b/kernel/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 |