From: Kumar Gala <galak@kernel.crashing.org>
Date: Tue, 7 Aug 2007 23:07:27 +0000 (-0500)
Subject: Use an absolute address when jumping out of 4k boot page
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=3db0bef59eab1155801618cef5c481e97553b597;p=u-boot.git

Use an absolute address when jumping out of 4k boot page

On e500 when we leave the 4k boot page we should use an absolute address since
we don't know where the board code may want us to be really running at.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---

diff --git a/cpu/mpc85xx/start.S b/cpu/mpc85xx/start.S
index 9dfd38d6a0..2c98c2ad8a 100644
--- a/cpu/mpc85xx/start.S
+++ b/cpu/mpc85xx/start.S
@@ -260,9 +260,33 @@ _start_e500:
 	mtspr	DBCR0,r0
 #endif
 
+/* L1 DCache is used for initial RAM */
+
+	/* Allocate Initial RAM in data cache.
+	 */
+	lis	r3,CFG_INIT_RAM_ADDR@h
+	ori	r3,r3,CFG_INIT_RAM_ADDR@l
+	li	r2,512 /* 512*32=16K */
+	mtctr	r2
+	li	r0,0
+1:
+	dcbz	r0,r3
+	dcbtls	0,r0,r3
+	addi	r3,r3,32
+	bdnz	1b
+
 	/* Jump out the last 4K page and continue to 'normal' start */
+#ifdef CFG_RAMBOOT
 	bl	3f
 	b	_start_cont
+#else
+	/* Calculate absolute address in FLASH and jump there		*/
+	/*--------------------------------------------------------------*/
+	lis	r3,CFG_MONITOR_BASE@h
+	ori	r3,r3,CFG_MONITOR_BASE@l
+	addi	r3,r3,_start_cont - _start + _START_OFFSET
+	mtlr	r3
+#endif
 
 3:	li	r0,0
 	mtspr	SRR1,r0		/* Keep things disabled for now */
@@ -271,7 +295,6 @@ _start_e500:
 	rfi
 	isync
 
-
 	.text
 	.globl	_start
 _start:
@@ -285,34 +308,6 @@ version_string:
 	.align	4
 	.globl	_start_cont
 _start_cont:
-
-/* L1 DCache is used for initial RAM */
-
-	/* Allocate Initial RAM in data cache.
-	 */
-	lis	r3,CFG_INIT_RAM_ADDR@h
-	ori	r3,r3,CFG_INIT_RAM_ADDR@l
-	li	r2,512 /* 512*32=16K */
-	mtctr	r2
-	li	r0,0
-1:
-	dcbz	r0,r3
-	dcbtls	0,r0,r3
-	addi	r3,r3,32
-	bdnz	1b
-
-#ifndef CFG_RAMBOOT
-	/* Calculate absolute address in FLASH and jump there		*/
-	/*--------------------------------------------------------------*/
-	lis	r3,CFG_MONITOR_BASE@h
-	ori	r3,r3,CFG_MONITOR_BASE@l
-	addi	r3,r3,in_flash - _start + _START_OFFSET
-	mtlr	r3
-	blr
-	.global	in_flash
-in_flash:
-#endif	/* CFG_RAMBOOT */
-
 	/* Setup the stack in initial RAM,could be L2-as-SRAM or L1 dcache*/
 	lis	r1,CFG_INIT_RAM_ADDR@h
 	ori	r1,r1,CFG_INIT_SP_OFFSET@l