X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=arch%2Farm%2Fcpu%2Farmv7%2Fstart.S;h=bc7bae85c02a49af463079510be8ed41952f2305;hb=44c6e6591cb451ae606f8bde71dd5fb7b4002544;hp=bb3948d401cc30f34c9e748e53bdbda99ad5cbba;hpb=d75c2a3d7f34ff1eb9920ad72483cff7cb6d358f;p=karo-tx-uboot.git

diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S
index bb3948d401..bc7bae85c0 100644
--- a/arch/arm/cpu/armv7/start.S
+++ b/arch/arm/cpu/armv7/start.S
@@ -79,7 +79,7 @@ _bss_start_ofs:
 
 .globl _bss_end_ofs
 _bss_end_ofs:
-	.word _end - _start
+	.word __bss_end__ - _start
 
 #ifdef CONFIG_USE_IRQ
 /* IRQ stack memory (calculated at run-time) */
@@ -98,30 +98,6 @@ FIQ_STACK_START:
 IRQ_STACK_START_IN:
 	.word	0x0badc0de
 
-.globl _datarel_start_ofs
-_datarel_start_ofs:
-	.word __datarel_start - _start
-
-.globl _datarelrolocal_start_ofs
-_datarelrolocal_start_ofs:
-	.word __datarelrolocal_start - _start
-
-.globl _datarellocal_start_ofs
-_datarellocal_start_ofs:
-	.word __datarellocal_start - _start
-
-.globl _datarelro_start_ofs
-_datarelro_start_ofs:
-	.word __datarelro_start - _start
-
-.globl _got_start_ofs
-_got_start_ofs:
-	.word __got_start - _start
-
-.globl _got_end_Ofs
-_got_end_ofs:
-	.word __got_end - _start
-
 /*
  * the actual reset code
  */
@@ -166,6 +142,7 @@ next:
 /* Set stackpointer in internal RAM to call board_init_f */
 call_board_init_f:
 	ldr	sp, =(CONFIG_SYS_INIT_SP_ADDR)
+	bic	sp, sp, #7 /* 8-byte alignment for ABI compliance */
 	ldr	r0,=0x00000000
 	bl	board_init_f
 
@@ -183,24 +160,23 @@ relocate_code:
 	mov	r4, r0	/* save addr_sp */
 	mov	r5, r1	/* save addr of gd */
 	mov	r6, r2	/* save addr of destination */
-	mov	r7, r2	/* save addr of destination */
 
 	/* Set up the stack						    */
 stack_setup:
 	mov	sp, r4
 
 	adr	r0, _start
-	ldr	r2, _TEXT_BASE
-	ldr	r3, _bss_start_ofs
-	add	r2, r0, r3		/* r2 <- source end address	    */
-	cmp	r0, r6
 #ifndef CONFIG_PRELOADER
-	beq	jump_2_ram
+	cmp	r0, r6
+	beq	clear_bss		/* skip relocation */
 #endif
+	mov	r1, r6			/* r1 <- scratch for copy_loop */
+	ldr	r3, _bss_start_ofs
+	add	r2, r0, r3		/* r2 <- source end address	    */
 
 copy_loop:
 	ldmia	r0!, {r9-r10}		/* copy from source address [r0]    */
-	stmia	r6!, {r9-r10}		/* copy to   target address [r1]    */
+	stmia	r1!, {r9-r10}		/* copy to   target address [r1]    */
 	cmp	r0, r2			/* until source end address [r2]    */
 	blo	copy_loop
 
@@ -209,7 +185,7 @@ copy_loop:
 	 * fix .rel.dyn relocations
 	 */
 	ldr	r0, _TEXT_BASE		/* r0 <- Text base */
-	sub	r9, r7, r0		/* r9 <- relocation offset */
+	sub	r9, r6, r0		/* r9 <- relocation offset */
 	ldr	r10, _dynsym_start_ofs	/* r10 <- sym table ofs */
 	add	r10, r10, r0		/* r10 <- sym table in FLASH */
 	ldr	r2, _rel_dyn_start_ofs	/* r2 <- rel dyn start ofs */
@@ -220,10 +196,10 @@ fixloop:
 	ldr	r0, [r2]		/* r0 <- location to fix up, IN FLASH! */
 	add	r0, r0, r9		/* r0 <- location to fix up in RAM */
 	ldr	r1, [r2, #4]
-	and	r8, r1, #0xff
-	cmp	r8, #23			/* relative fixup? */
+	and	r7, r1, #0xff
+	cmp	r7, #23			/* relative fixup? */
 	beq	fixrel
-	cmp	r8, #2			/* absolute fixup? */
+	cmp	r7, #2			/* absolute fixup? */
 	beq	fixabs
 	/* ignore unknown type of fixup */
 	b	fixnext
@@ -232,7 +208,7 @@ fixabs:
 	mov	r1, r1, LSR #4		/* r1 <- symbol index in .dynsym */
 	add	r1, r10, r1		/* r1 <- address of symbol in table */
 	ldr	r1, [r1, #4]		/* r1 <- symbol value */
-	add	r1, r9			/* r1 <- relocated sym addr */
+	add	r1, r1, r9		/* r1 <- relocated sym addr */
 	b	fixnext
 fixrel:
 	/* relative fix: increase location by offset */
@@ -247,8 +223,7 @@ fixnext:
 clear_bss:
 	ldr	r0, _bss_start_ofs
 	ldr	r1, _bss_end_ofs
-	ldr	r3, _TEXT_BASE		/* Text base */
-	mov	r4, r7			/* reloc addr */
+	mov	r4, r6			/* reloc addr */
 	add	r0, r0, r4
 	add	r1, r1, r4
 	mov	r2, #0x00000000		/* clear			    */
@@ -270,7 +245,7 @@ jump_2_ram:
 	add	lr, lr, r9
 	/* setup parameters for board_init_r */
 	mov	r0, r5		/* gd_t */
-	mov	r1, r7		/* dest_addr */
+	mov	r1, r6		/* dest_addr */
 	/* jump to it ... */
 	mov	pc, lr