[U-Boot-Users] [PATCH] Make MPC83xx one step closer to full relocation.

Joakim Tjernlund Joakim.Tjernlund at transmode.se
Fri Mar 28 15:41:25 CET 2008


Remove a few absolute references to CFG_MONITOR_BASE for ppc/mpc83xx
and use GOT relative reference.
---
 cpu/mpc83xx/start.S |   11 +++++++----
 lib_ppc/board.c     |    3 ++-
 2 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/cpu/mpc83xx/start.S b/cpu/mpc83xx/start.S
index 1dfbf62..56fd7ec 100644
--- a/cpu/mpc83xx/start.S
+++ b/cpu/mpc83xx/start.S
@@ -172,8 +172,11 @@ boot_warm: /* time t 5 */
 	/* there and deflate the flash size back to minimal size      */
 	/*------------------------------------------------------------*/
 	bl map_flash_by_law1
-	lis r4, (CFG_MONITOR_BASE)@h
-	ori r4, r4, (CFG_MONITOR_BASE)@l
+
+	GET_GOT			/* initialize GOT access	*/
+	lwz r4, GOT(_start)	
+	addi r4, r4, -EXC_OFF_SYS_RESET
+
 	addi r5, r4, in_flash - _start + EXC_OFF_SYS_RESET
 	mtlr r5
 	blr
@@ -906,8 +909,8 @@ relocate_code:
 	mr	r10, r5		/* Save copy of Destination Address */
 
 	mr	r3,  r5				/* Destination Address */
-	lis	r4, CFG_MONITOR_BASE at h		/* Source      Address */
-	ori	r4, r4, CFG_MONITOR_BASE at l
+	lwz	r4, GOT(_start)
+	addi	r4, r4, -EXC_OFF_SYS_RESET	
 	lwz	r5, GOT(__init_end)
 	sub	r5, r5, r4
 	li	r6, CFG_CACHELINE_SIZE		/* Cache Line Size */
diff --git a/lib_ppc/board.c b/lib_ppc/board.c
index 45d1328..8a18350 100644
--- a/lib_ppc/board.c
+++ b/lib_ppc/board.c
@@ -117,6 +117,7 @@ DECLARE_GLOBAL_DATA_PTR;
 #define	TOTAL_MALLOC_LEN	CFG_MALLOC_LEN
 #endif
 
+extern ulong _start;
 extern ulong __init_end;
 extern ulong _end;
 ulong monitor_flash_len;
@@ -417,7 +418,7 @@ void board_init_f (ulong bootflag)
 	 *  - monitor code
 	 *  - board info struct
 	 */
-	len = (ulong)&_end - CFG_MONITOR_BASE;
+	len = (ulong)&_end - (ulong)&_start + EXC_OFF_SYS_RESET;
 
 #ifndef	CONFIG_VERY_BIG_RAM
 	addr = CFG_SDRAM_BASE + gd->ram_size;
-- 
1.5.3.8





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