From: Magnus Damm <magnus.damm@gmail.com>
To: linux-sh@vger.kernel.org
Subject: [PATCH 01/04] sh: allow romImage data between head.S and the zero page
Date: Tue, 18 May 2010 14:42:40 +0000 [thread overview]
Message-ID: <20100518144240.29239.58437.sendpatchset@t400s> (raw)
From: Magnus Damm <damm@opensource.se>
Extend the romImage code to allow putting data between
the head.S file and the empty_zero_page. Needed in the
case of more advanced loader code in a separate C file.
Signed-off-by: Magnus Damm <damm@opensource.se>
---
This patch is identical to the one posted 2010-05-13.
arch/sh/boot/romimage/head.S | 12 +++++++++---
arch/sh/boot/romimage/vmlinux.scr | 1 +
2 files changed, 10 insertions(+), 3 deletions(-)
--- 0001/arch/sh/boot/romimage/head.S
+++ work/arch/sh/boot/romimage/head.S 2010-05-07 19:49:01.000000000 +0900
@@ -13,7 +13,9 @@ romstart:
#include <mach/romimage.h>
/* copy the empty_zero_page contents to where vmlinux expects it */
- mova empty_zero_page_src, r0
+ 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
@@ -37,7 +39,9 @@ romstart:
mov #PAGE_SHIFT, r4
mov #1, r1
shld r4, r1
- mova empty_zero_page_src, r0
+ mova extra_data_pos, r0
+ add r1, r0
+ mov.l extra_data_size, r1
add r1, r0
jmp @r0
nop
@@ -45,4 +49,6 @@ romstart:
.align 2
empty_zero_page_dst:
.long _text
-empty_zero_page_src:
+extra_data_pos:
+extra_data_size:
+ .long zero_page_pos - extra_data_pos
--- 0001/arch/sh/boot/romimage/vmlinux.scr
+++ work/arch/sh/boot/romimage/vmlinux.scr 2010-05-07 19:46:57.000000000 +0900
@@ -1,6 +1,7 @@
SECTIONS
{
.text : {
+ zero_page_pos = .;
*(.data)
}
}
reply other threads:[~2010-05-18 14:42 UTC|newest]
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