X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=arch%2Fmips%2Fcpu%2Fxburst%2Fstart.S;h=d2c064b0175b0c5368e5a7d183c9192bc6340b8e;hb=9c748e02d99476e6a08d55eadfd8776edffe1e2e;hp=194d7452e1a6f9e959c221fb4f02703fc739ca0a;hpb=5b7dd8163d517c8f52971bc16fe92f831553d2bb;p=karo-tx-uboot.git

diff --git a/arch/mips/cpu/xburst/start.S b/arch/mips/cpu/xburst/start.S
index 194d7452e1..d2c064b017 100644
--- a/arch/mips/cpu/xburst/start.S
+++ b/arch/mips/cpu/xburst/start.S
@@ -64,19 +64,13 @@ relocate_code:
 	move	sp, a0			# set new stack pointer
 
 	li	t0, CONFIG_SYS_MONITOR_BASE
+	sub	t6, a2, t0		# t6 <-- relocation offset
+
 	la	t3, in_ram
-	lw	t2, -12(t3)		# t2 <-- uboot_end_data
+	lw	t2, -12(t3)		# t2 <-- __image_copy_end
 	move	t1, a2
 
-	/*
-	 * Fix $gp:
-	 *
-	 * New $gp = (Old $gp - CONFIG_SYS_MONITOR_BASE) + Destination Address
-	 */
-	move	t6, gp
-	sub	gp, CONFIG_SYS_MONITOR_BASE
-	add	gp, a2			# gp now adjusted
-	sub	t6, gp, t6		# t6 <-- relocation offset
+	add	gp, t6			# adjust gp
 
 	/*
 	 * t0 = source address
@@ -122,10 +116,10 @@ relocate_code:
 	jr	t0
 	 nop
 
-	.word	_gp
+	.word	__rel_dyn_end
+	.word	__rel_dyn_start
+	.word	__image_copy_end
 	.word	_GLOBAL_OFFSET_TABLE_
-	.word	uboot_end_data
-	.word	uboot_end
 	.word	num_got_entries
 
 in_ram:
@@ -136,10 +130,8 @@ in_ram:
 	 * generated by GNU ld. Skip these reserved entries from relocation.
 	 */
 	lw	t3, -4(t0)		# t3 <-- num_got_entries
-	lw	t4, -16(t0)		# t4 <-- _GLOBAL_OFFSET_TABLE_
-	lw	t5, -20(t0)		# t5 <-- _gp
-	sub	t4, t5			# compute offset
-	add	t4, t4, gp		# t4 now holds relocated _G_O_T_
+	lw	t4, -8(t0)		# t4 <-- _GLOBAL_OFFSET_TABLE_
+	add	t4, t6			# t4 now holds relocated _G_O_T_
 	addi	t4, t4, 8		# skipping first two entries
 	li	t2, 2
 1:
@@ -152,16 +144,45 @@ in_ram:
 	blt	t2, t3, 1b
 	 addi	t4, 4
 
-	/* Clear BSS */
-	lw	t1, -12(t0)		# t1 <-- uboot_end_data
-	lw	t2, -8(t0)		# t2 <-- uboot_end
-	add	t1, t6			# adjust pointers
-	add	t2, t6
+	/* Update dynamic relocations */
+	lw	t1, -16(t0)		# t1 <-- __rel_dyn_start
+	lw	t2, -20(t0)		# t2 <-- __rel_dyn_end
+
+	b	2f			# skip first reserved entry
+	 addi	t1, 8
+
+1:
+	lw	t3, -4(t1)		# t3 <-- relocation info
+
+	sub	t3, 3
+	bnez	t3, 2f			# skip non R_MIPS_REL32 entries
+	 nop
+
+	lw	t3, -8(t1)		# t3 <-- location to fix up in FLASH
+
+	lw	t4, 0(t3)		# t4 <-- original pointer
+	add	t4, t6			# t4 <-- adjusted pointer
+
+	add	t3, t6			# t3 <-- location to fix up in RAM
+	sw	t4, 0(t3)
+
+2:
+	blt	t1, t2, 1b
+	 addi	t1, 8			# each rel.dyn entry is 8 bytes
+
+	/*
+	 * Clear BSS
+	 *
+	 * GOT is now relocated. Thus __bss_start and __bss_end can be
+	 * accessed directly via $gp.
+	 */
+	la	t1, __bss_start		# t1 <-- __bss_start
+	la	t2, __bss_end		# t2 <-- __bss_end
 
-	sub	t1, 4
-1:	addi	t1, 4
-	bltl	t1, t2, 1b
-	 sw	zero, 0(t1)
+1:
+	sw	zero, 0(t1)
+	blt	t1, t2, 1b
+	 addi	t1, 4
 
 	move	a0, a1			# a0 <-- gd
 	la	t9, board_init_r