Patchwork [U-Boot,08/22] armv7: start.S: add SPL support

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Submitter Aneesh V
Date Feb. 28, 2011, 11:46 a.m.
Message ID <1298893591-17636-9-git-send-email-aneesh@ti.com>
Download mbox | patch
Permalink /patch/84807/
State Changes Requested
Delegated to: Sandeep Paulraj
Headers show

Comments

Aneesh V - Feb. 28, 2011, 11:46 a.m.
Changes for supporting SPL

Signed-off-by: Aneesh V <aneesh@ti.com>
---
 arch/arm/cpu/armv7/start.S |   36 +++++++++++++++++++++++++-----------
 1 files changed, 25 insertions(+), 11 deletions(-)

Patch

diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S
index 8215d26..f5f08d9 100644
--- a/arch/arm/cpu/armv7/start.S
+++ b/arch/arm/cpu/armv7/start.S
@@ -42,7 +42,16 @@  _start: b	reset
 	ldr	pc, _not_used
 	ldr	pc, _irq
 	ldr	pc, _fiq
-
+#ifdef CONFIG_PRELOADER
+_undefined_instruction: .word _undefined_instruction
+_software_interrupt:	.word _software_interrupt
+_prefetch_abort:	.word _prefetch_abort
+_data_abort:		.word _data_abort
+_not_used:		.word _not_used
+_irq:			.word _irq
+_fiq:			.word _fiq
+_pad:			.word 0x12345678 /* now 16*4=64 */
+#else
 _undefined_instruction: .word undefined_instruction
 _software_interrupt:	.word software_interrupt
 _prefetch_abort:	.word prefetch_abort
@@ -51,6 +60,8 @@  _not_used:		.word not_used
 _irq:			.word irq
 _fiq:			.word fiq
 _pad:			.word 0x12345678 /* now 16*4=64 */
+#endif	/* CONFIG_PRELOADER */
+
 .global _end_vect
 _end_vect:
 
@@ -171,10 +182,9 @@  stack_setup:
 	mov	sp, r4
 
 	adr	r0, _start
-#ifndef CONFIG_PRELOADER
 	cmp	r0, r6
+	moveq	r9, #0		/* no relocation. relocation offset(r9) = 0 */
 	beq	clear_bss		/* skip relocation */
-#endif
 	mov	r1, r6			/* r1 <- scratch for copy_loop */
 	ldr	r3, _image_copy_end_ofs
 	add	r2, r0, r3		/* r2 <- source end address	    */
@@ -224,6 +234,15 @@  fixnext:
 	add	r2, r2, #8		/* each rel.dyn entry is 8 bytes */
 	cmp	r2, r3
 	blo	fixloop
+	b	clear_bss
+_rel_dyn_start_ofs:
+	.word __rel_dyn_start - _start
+_rel_dyn_end_ofs:
+	.word __rel_dyn_end - _start
+_dynsym_start_ofs:
+	.word __dynsym_start - _start
+
+#endif	/* #ifndef CONFIG_PRELOADER */
 
 clear_bss:
 	ldr	r0, _bss_start_ofs
@@ -237,7 +256,6 @@  clbss_l:str	r2, [r0]		/* clear loop...		    */
 	add	r0, r0, #4
 	cmp	r0, r1
 	bne	clbss_l
-#endif	/* #ifndef CONFIG_PRELOADER */
 
 /*
  * We are done. Do not return, instead branch to second part of board
@@ -257,13 +275,6 @@  jump_2_ram:
 _board_init_r_ofs:
 	.word board_init_r - _start
 
-_rel_dyn_start_ofs:
-	.word __rel_dyn_start - _start
-_rel_dyn_end_ofs:
-	.word __rel_dyn_end - _start
-_dynsym_start_ofs:
-	.word __dynsym_start - _start
-
 /*************************************************************************
  *
  * CPU_init_critical registers
@@ -300,6 +311,8 @@  cpu_init_crit:
 	bl	lowlevel_init		@ go setup pll,mux,memory
 	mov	lr, ip			@ restore link
 	mov	pc, lr			@ back to my caller
+
+#ifndef CONFIG_PRELOADER
 /*
  *************************************************************************
  *
@@ -488,3 +501,4 @@  fiq:
 	bl	do_fiq
 
 #endif
+#endif /* CONFIG_PRELOADER */