diff options
| author |   Mikael Starvik <mikael.starvik@axis.com> | 2005-07-27 11:44:38 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2005-07-27 16:26:00 -0700 |
| commit | 7cf32cad153d63ac4f6f2d5dd16ddd32ad72d578 (patch) | |
| tree | 1072d64f49092ba87ff0d5079e37f58f646f7356 /arch/cris/arch-v10/boot | |
| parent | [PATCH] CRIS update: IRQ (diff) | |
| download | linux-dev-7cf32cad153d63ac4f6f2d5dd16ddd32ad72d578.tar.xz linux-dev-7cf32cad153d63ac4f6f2d5dd16ddd32ad72d578.zip | |
[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.S | 22 | ||||
| -rw-r--r-- | arch/cris/arch-v10/boot/rescue/head.S | 33 |
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 |