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authorMikael Starvik <mikael.starvik@axis.com>2005-07-27 11:44:38 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-07-27 16:26:00 -0700
commit7cf32cad153d63ac4f6f2d5dd16ddd32ad72d578 (patch)
tree1072d64f49092ba87ff0d5079e37f58f646f7356 /arch/cris/arch-v10/boot
parent2e0cea1decf7f21df0496571c218df3b3b8cce99 (diff)
[PATCH] CRIS update: misc patches
* Start threads with IRQs enabled. * Move symbol exports to arch specific file. * Prepare for real command line in the future. * Handle csum for partition that crosses flash boundary. * Set utsname. Signed-off-by: Mikael Starvik <starvik@axis.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/cris/arch-v10/boot')
-rw-r--r--arch/cris/arch-v10/boot/compressed/head.S22
-rw-r--r--arch/cris/arch-v10/boot/rescue/head.S33
2 files changed, 46 insertions, 9 deletions
diff --git a/arch/cris/arch-v10/boot/compressed/head.S b/arch/cris/arch-v10/boot/compressed/head.S
index 4cbdd4b1d9d6..e73f44c998d9 100644
--- a/arch/cris/arch-v10/boot/compressed/head.S
+++ b/arch/cris/arch-v10/boot/compressed/head.S
@@ -13,7 +13,8 @@
#include <asm/arch/sv_addr_ag.h>
#define RAM_INIT_MAGIC 0x56902387
-
+#define COMMAND_LINE_MAGIC 0x87109563
+
;; Exported symbols
.globl _input_data
@@ -88,6 +89,12 @@ basse: move.d pc, r5
cmp.d r2, r1
bcs 1b
nop
+
+ ;; Save command line magic and address.
+ move.d _cmd_line_magic, $r12
+ move.d $r10, [$r12]
+ move.d _cmd_line_addr, $r12
+ move.d $r11, [$r12]
;; Do the decompression and save compressed size in _inptr
@@ -98,7 +105,13 @@ basse: move.d pc, r5
move.d [_input_data], r9 ; flash address of compressed kernel
add.d [_inptr], r9 ; size of compressed kernel
-
+
+ ;; Restore command line magic and address.
+ move.d _cmd_line_magic, $r10
+ move.d [$r10], $r10
+ move.d _cmd_line_addr, $r11
+ move.d [$r11], $r11
+
;; Enter the decompressed kernel
move.d RAM_INIT_MAGIC, r8 ; Tell kernel that DRAM is initialized
jump 0x40004000 ; kernel is linked to this address
@@ -107,5 +120,8 @@ basse: move.d pc, r5
_input_data:
.dword 0 ; used by the decompressor
-
+_cmd_line_magic:
+ .dword 0
+_cmd_line_addr:
+ .dword 0
#include "../../lib/hw_settings.S"
diff --git a/arch/cris/arch-v10/boot/rescue/head.S b/arch/cris/arch-v10/boot/rescue/head.S
index 8689ea972c46..addb2194de0f 100644
--- a/arch/cris/arch-v10/boot/rescue/head.S
+++ b/arch/cris/arch-v10/boot/rescue/head.S
@@ -1,4 +1,4 @@
-/* $Id: head.S,v 1.6 2003/04/09 08:12:43 pkj Exp $
+/* $Id: head.S,v 1.7 2005/03/07 12:11:06 starvik Exp $
*
* Rescue code, made to reside at the beginning of the
* flash-memory. when it starts, it checks a partition
@@ -121,12 +121,13 @@
;; 0x80000000 if loaded in flash (as it should be)
;; since etrax actually starts at address 2 when booting from flash, we
;; put a nop (2 bytes) here first so we dont accidentally skip the di
-
+
nop
di
jump in_cache ; enter cached area instead
-in_cache:
+in_cache:
+
;; first put a jump test to give a possibility of upgrading the rescue code
;; without erasing/reflashing the sector. we put a longword of -1 here and if
@@ -325,9 +326,29 @@ flash_ok:
;; result will be in r0
checksum:
moveq 0, $r0
-1: addu.b [$r1+], $r0
- subq 1, $r2
- bne 1b
+ moveq CONFIG_ETRAX_FLASH1_SIZE, $r6
+
+ ;; If the first physical flash memory is exceeded wrap to the second one.
+ btstq 26, $r1 ; Are we addressing first flash?
+ bpl 1f
+ nop
+ clear.d $r6
+
+1: test.d $r6 ; 0 = no wrapping
+ beq 2f
+ nop
+ lslq 20, $r6 ; Convert MB to bytes
+ sub.d $r1, $r6
+
+2: addu.b [$r1+], $r0
+ subq 1, $r6 ; Flash memory left
+ beq 3f
+ subq 1, $r2 ; Length left
+ bne 2b
nop
ret
nop
+
+3: move.d MEM_CSE1_START, $r1 ; wrap to second flash
+ ba 2b
+ nop