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From: Albert ARIBAUD <albert.u.boot@aribaud.net>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 4/4] arm: factorize relocate_code routine
Date: Fri, 10 May 2013 23:56:52 +0200	[thread overview]
Message-ID: <1368223012-17609-5-git-send-email-albert.u.boot@aribaud.net> (raw)
In-Reply-To: <1368223012-17609-4-git-send-email-albert.u.boot@aribaud.net>


Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
---
 arch/arm/cpu/arm1136/start.S   |   82 --------------------------------
 arch/arm/cpu/arm1176/start.S   |   75 ------------------------------
 arch/arm/cpu/arm720t/start.S   |   82 --------------------------------
 arch/arm/cpu/arm920t/start.S   |   75 ------------------------------
 arch/arm/cpu/arm925t/start.S   |   75 ------------------------------
 arch/arm/cpu/arm926ejs/start.S |   82 --------------------------------
 arch/arm/cpu/arm946es/start.S  |   75 ------------------------------
 arch/arm/cpu/arm_intcm/start.S |   75 ------------------------------
 arch/arm/cpu/armv7/start.S     |   78 -------------------------------
 arch/arm/cpu/ixp/start.S       |   75 ------------------------------
 arch/arm/cpu/pxa/start.S       |   84 ---------------------------------
 arch/arm/cpu/s3c44b0/start.S   |   75 ------------------------------
 arch/arm/cpu/sa1100/start.S    |   75 ------------------------------
 arch/arm/lib/Makefile          |    2 +-
 arch/arm/lib/relocate.S        |  100 ++++++++++++++++++++++++++++++++++++++++
 15 files changed, 101 insertions(+), 1009 deletions(-)
 create mode 100644 arch/arm/lib/relocate.S

diff --git a/arch/arm/cpu/arm1136/start.S b/arch/arm/cpu/arm1136/start.S
index ab8fd56..4b3f828 100644
--- a/arch/arm/cpu/arm1136/start.S
+++ b/arch/arm/cpu/arm1136/start.S
@@ -167,88 +167,6 @@ next:
 
 	bl	_main
 
-/*------------------------------------------------------------------------------*/
-
-/*
- * void relocate_code(addr_moni)
- *
- * This function relocates the monitor code.
- */
-	.globl	relocate_code
-relocate_code:
-	mov	r6, r0	/* save addr of destination */
-
-	adr	r0, _start
-	subs	r9, r6, r0		/* r9 <- relocation offset */
-	beq	relocate_done		/* skip relocation */
-	mov	r1, r6			/* r1 <- scratch for copy_loop */
-	ldr	r3, _image_copy_end_ofs
-	add	r2, r0, r3		/* r2 <- source end address	    */
-
-copy_loop:
-	ldmia	r0!, {r10-r11}		/* copy from source address [r0]    */
-	stmia	r1!, {r10-r11}		/* copy to   target address [r1]    */
-	cmp	r0, r2			/* until source end address [r2]    */
-	blo	copy_loop
-
-#ifndef CONFIG_SPL_BUILD
-	/*
-	 * fix .rel.dyn relocations
-	 */
-	ldr	r0, _TEXT_BASE		/* r0 <- Text base */
-	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 */
-	add	r2, r2, r0		/* r2 <- rel dyn start in FLASH */
-	ldr	r3, _rel_dyn_end_ofs	/* r3 <- rel dyn end ofs */
-	add	r3, r3, r0		/* r3 <- rel dyn end in FLASH */
-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	r7, r1, #0xff
-	cmp	r7, #23			/* relative fixup? */
-	beq	fixrel
-	cmp	r7, #2			/* absolute fixup? */
-	beq	fixabs
-	/* ignore unknown type of fixup */
-	b	fixnext
-fixabs:
-	/* absolute fix: set location to (offset) symbol value */
-	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, r1, r9		/* r1 <- relocated sym addr */
-	b	fixnext
-fixrel:
-	/* relative fix: increase location by offset */
-	ldr	r1, [r0]
-	add	r1, r1, r9
-fixnext:
-	str	r1, [r0]
-	add	r2, r2, #8		/* each rel.dyn entry is 8 bytes */
-	cmp	r2, r3
-	blo	fixloop
-#endif
-
-relocate_done:
-
-	bx	lr
-
-_image_copy_end_ofs:
-	.word __image_copy_end - _start
-
-#ifndef CONFIG_SPL_BUILD
-
-_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
-
 	.globl	c_runtime_cpu_setup
 c_runtime_cpu_setup:
 
diff --git a/arch/arm/cpu/arm1176/start.S b/arch/arm/cpu/arm1176/start.S
index f20da8e..6929b08 100644
--- a/arch/arm/cpu/arm1176/start.S
+++ b/arch/arm/cpu/arm1176/start.S
@@ -223,81 +223,6 @@ skip_tcmdisable:
 
 	bl	_main
 
-/*------------------------------------------------------------------------------*/
-
-/*
- * void relocate_code(addr_moni)
- *
- * This function relocates the monitor code.
- */
-	.globl	relocate_code
-relocate_code:
-	mov	r6, r0	/* save addr of destination */
-
-	adr	r0, _start
-	subs	r9, r6, r0		/* r9 <- relocation offset */
-	beq	relocate_done		/* skip relocation */
-	mov	r1, r6			/* r1 <- scratch for copy_loop */
-	ldr	r3, _image_copy_end_ofs
-	add	r2, r0, r3		/* r2 <- source end address	    */
-
-copy_loop:
-	ldmia	r0!, {r10-r11}		/* copy from source address [r0]    */
-	stmia	r1!, {r10-r11}		/* copy to   target address [r1]    */
-	cmp	r0, r2			/* until source end address [r2]    */
-	blo	copy_loop
-
-#ifndef CONFIG_SPL_BUILD
-	/*
-	 * fix .rel.dyn relocations
-	 */
-	ldr	r0, _TEXT_BASE		/* r0 <- Text base */
-	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 */
-	add	r2, r2, r0		/* r2 <- rel dyn start in FLASH */
-	ldr	r3, _rel_dyn_end_ofs	/* r3 <- rel dyn end ofs */
-	add	r3, r3, r0		/* r3 <- rel dyn end in FLASH */
-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	r7, r1, #0xff
-	cmp	r7, #23			/* relative fixup? */
-	beq	fixrel
-	cmp	r7, #2			/* absolute fixup? */
-	beq	fixabs
-	/* ignore unknown type of fixup */
-	b	fixnext
-fixabs:
-	/* absolute fix: set location to (offset) symbol value */
-	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, r1, r9		/* r1 <- relocated sym addr */
-	b	fixnext
-fixrel:
-	/* relative fix: increase location by offset */
-	ldr	r1, [r0]
-	add	r1, r1, r9
-fixnext:
-	str	r1, [r0]
-	add	r2, r2, #8		/* each rel.dyn entry is 8 bytes */
-	cmp	r2, r3
-	blo	fixloop
-#endif
-
-relocate_done:
-
-	bx	lr
-
-_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
-
 	.globl	c_runtime_cpu_setup
 c_runtime_cpu_setup:
 
diff --git a/arch/arm/cpu/arm720t/start.S b/arch/arm/cpu/arm720t/start.S
index b85509c..afb40eb 100644
--- a/arch/arm/cpu/arm720t/start.S
+++ b/arch/arm/cpu/arm720t/start.S
@@ -149,88 +149,6 @@ reset:
 
 	bl	_main
 
-/*------------------------------------------------------------------------------*/
-
-/*
- * void relocate_code(addr_moni)
- *
- * This function relocates the monitor code.
- */
-	.globl	relocate_code
-relocate_code:
-	mov	r6, r0	/* save addr of destination */
-
-	adr	r0, _start
-	subs	r9, r6, r0		/* r9 <- relocation offset */
-	beq	relocate_done		/* skip relocation */
-	mov	r1, r6			/* r1 <- scratch for copy_loop */
-	ldr	r3, _image_copy_end_ofs
-	add	r2, r0, r3		/* r2 <- source end address	    */
-
-copy_loop:
-	ldmia	r0!, {r10-r11}		/* copy from source address [r0]    */
-	stmia	r1!, {r10-r11}		/* copy to   target address [r1]    */
-	cmp	r0, r2			/* until source end address [r2]    */
-	blo	copy_loop
-
-#ifndef CONFIG_SPL_BUILD
-	/*
-	 * fix .rel.dyn relocations
-	 */
-	ldr	r0, _TEXT_BASE		/* r0 <- Text base */
-	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 */
-	add	r2, r2, r0		/* r2 <- rel dyn start in FLASH */
-	ldr	r3, _rel_dyn_end_ofs	/* r3 <- rel dyn end ofs */
-	add	r3, r3, r0		/* r3 <- rel dyn end in FLASH */
-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	r7, r1, #0xff
-	cmp	r7, #23			/* relative fixup? */
-	beq	fixrel
-	cmp	r7, #2			/* absolute fixup? */
-	beq	fixabs
-	/* ignore unknown type of fixup */
-	b	fixnext
-fixabs:
-	/* absolute fix: set location to (offset) symbol value */
-	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, r1, r9		/* r1 <- relocated sym addr */
-	b	fixnext
-fixrel:
-	/* relative fix: increase location by offset */
-	ldr	r1, [r0]
-	add	r1, r1, r9
-fixnext:
-	str	r1, [r0]
-	add	r2, r2, #8		/* each rel.dyn entry is 8 bytes */
-	cmp	r2, r3
-	blo	fixloop
-#endif
-
-relocate_done:
-
-	mov	pc, lr
-
-_image_copy_end_ofs:
-	.word __image_copy_end - _start
-
-#ifndef CONFIG_SPL_BUILD
-
-_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
-
 	.globl	c_runtime_cpu_setup
 c_runtime_cpu_setup:
 
diff --git a/arch/arm/cpu/arm920t/start.S b/arch/arm/cpu/arm920t/start.S
index 6250025..dbfca78 100644
--- a/arch/arm/cpu/arm920t/start.S
+++ b/arch/arm/cpu/arm920t/start.S
@@ -192,81 +192,6 @@ copyex:
 
 	bl	_main
 
-/*------------------------------------------------------------------------------*/
-
-/*
- * void relocate_code(addr_moni)
- *
- * This function relocates the monitor code.
- */
-	.globl	relocate_code
-relocate_code:
-	mov	r6, r0	/* save addr of destination */
-
-	adr	r0, _start
-	subs	r9, r6, r0		/* r9 <- relocation offset */
-	beq	relocate_done		/* skip relocation */
-	mov	r1, r6			/* r1 <- scratch for copy_loop */
-	ldr	r3, _image_copy_end_ofs
-	add	r2, r0, r3		/* r2 <- source end address	    */
-
-copy_loop:
-	ldmia	r0!, {r10-r11}		/* copy from source address [r0]    */
-	stmia	r1!, {r10-r11}		/* copy to   target address [r1]    */
-	cmp	r0, r2			/* until source end address [r2]    */
-	blo	copy_loop
-
-#ifndef CONFIG_SPL_BUILD
-	/*
-	 * fix .rel.dyn relocations
-	 */
-	ldr	r0, _TEXT_BASE		/* r0 <- Text base */
-	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 */
-	add	r2, r2, r0		/* r2 <- rel dyn start in FLASH */
-	ldr	r3, _rel_dyn_end_ofs	/* r3 <- rel dyn end ofs */
-	add	r3, r3, r0		/* r3 <- rel dyn end in FLASH */
-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	r7, r1, #0xff
-	cmp	r7, #23			/* relative fixup? */
-	beq	fixrel
-	cmp	r7, #2			/* absolute fixup? */
-	beq	fixabs
-	/* ignore unknown type of fixup */
-	b	fixnext
-fixabs:
-	/* absolute fix: set location to (offset) symbol value */
-	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, r1, r9		/* r1 <- relocated sym addr */
-	b	fixnext
-fixrel:
-	/* relative fix: increase location by offset */
-	ldr	r1, [r0]
-	add	r1, r1, r9
-fixnext:
-	str	r1, [r0]
-	add	r2, r2, #8		/* each rel.dyn entry is 8 bytes */
-	cmp	r2, r3
-	blo	fixloop
-#endif
-
-relocate_done:
-
-	mov	pc, lr
-
-_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
-
 	.globl	c_runtime_cpu_setup
 c_runtime_cpu_setup:
 
diff --git a/arch/arm/cpu/arm925t/start.S b/arch/arm/cpu/arm925t/start.S
index 021e241..372b9e9 100644
--- a/arch/arm/cpu/arm925t/start.S
+++ b/arch/arm/cpu/arm925t/start.S
@@ -182,81 +182,6 @@ poll1:
 
 	bl	_main
 
-/*------------------------------------------------------------------------------*/
-
-/*
- * void relocate_code(addr_moni)
- *
- * This function relocates the monitor code.
- */
-	.globl	relocate_code
-relocate_code:
-	mov	r6, r0	/* save addr of destination */
-
-	adr	r0, _start
-	subs	r9, r6, r0		/* r9 <- relocation offset */
-	beq	relocate_done		/* skip relocation */
-	mov	r1, r6			/* r1 <- scratch for copy_loop */
-	ldr	r3, _image_copy_end_ofs
-	add	r2, r0, r3		/* r2 <- source end address	    */
-
-copy_loop:
-	ldmia	r0!, {r10-r11}		/* copy from source address [r0]    */
-	stmia	r1!, {r10-r11}		/* copy to   target address [r1]    */
-	cmp	r0, r2			/* until source end address [r2]    */
-	blo	copy_loop
-
-#ifndef CONFIG_SPL_BUILD
-	/*
-	 * fix .rel.dyn relocations
-	 */
-	ldr	r0, _TEXT_BASE		/* r0 <- Text base */
-	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 */
-	add	r2, r2, r0		/* r2 <- rel dyn start in FLASH */
-	ldr	r3, _rel_dyn_end_ofs	/* r3 <- rel dyn end ofs */
-	add	r3, r3, r0		/* r3 <- rel dyn end in FLASH */
-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	r7, r1, #0xff
-	cmp	r7, #23			/* relative fixup? */
-	beq	fixrel
-	cmp	r7, #2			/* absolute fixup? */
-	beq	fixabs
-	/* ignore unknown type of fixup */
-	b	fixnext
-fixabs:
-	/* absolute fix: set location to (offset) symbol value */
-	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, r1, r9		/* r1 <- relocated sym addr */
-	b	fixnext
-fixrel:
-	/* relative fix: increase location by offset */
-	ldr	r1, [r0]
-	add	r1, r1, r9
-fixnext:
-	str	r1, [r0]
-	add	r2, r2, #8		/* each rel.dyn entry is 8 bytes */
-	cmp	r2, r3
-	blo	fixloop
-#endif
-
-relocate_done:
-
-	mov	pc, lr
-
-_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
-
 	.globl	c_runtime_cpu_setup
 c_runtime_cpu_setup:
 
diff --git a/arch/arm/cpu/arm926ejs/start.S b/arch/arm/cpu/arm926ejs/start.S
index 736361a..2ee591b 100644
--- a/arch/arm/cpu/arm926ejs/start.S
+++ b/arch/arm/cpu/arm926ejs/start.S
@@ -184,88 +184,6 @@ reset:
 
 	bl	_main
 
-/*------------------------------------------------------------------------------*/
-
-/*
- * void relocate_code(addr_moni)
- *
- * This function relocates the monitor code.
- */
-	.globl	relocate_code
-relocate_code:
-	mov	r6, r0	/* save addr of destination */
-
-	adr	r0, _start
-	subs	r9, r6, r0		/* r9 <- relocation offset */
-	beq	relocate_done		/* skip relocation */
-	mov	r1, r6			/* r1 <- scratch for copy loop */
-	ldr	r3, _image_copy_end_ofs
-	add	r2, r0, r3		/* r2 <- source end address	    */
-
-copy_loop:
-	ldmia	r0!, {r10-r11}		/* copy from source address [r0]    */
-	stmia	r1!, {r10-r11}		/* copy to   target address [r1]    */
-	cmp	r0, r2			/* until source end address [r2]    */
-	blo	copy_loop
-
-#ifndef CONFIG_SPL_BUILD
-	/*
-	 * fix .rel.dyn relocations
-	 */
-	ldr	r0, _TEXT_BASE		/* r0 <- Text base */
-	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 */
-	add	r2, r2, r0		/* r2 <- rel dyn start in FLASH */
-	ldr	r3, _rel_dyn_end_ofs	/* r3 <- rel dyn end ofs */
-	add	r3, r3, r0		/* r3 <- rel dyn end in FLASH */
-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	r7, r1, #0xff
-	cmp	r7, #23			/* relative fixup? */
-	beq	fixrel
-	cmp	r7, #2			/* absolute fixup? */
-	beq	fixabs
-	/* ignore unknown type of fixup */
-	b	fixnext
-fixabs:
-	/* absolute fix: set location to (offset) symbol value */
-	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, r1, r9		/* r1 <- relocated sym addr */
-	b	fixnext
-fixrel:
-	/* relative fix: increase location by offset */
-	ldr	r1, [r0]
-	add	r1, r1, r9
-fixnext:
-	str	r1, [r0]
-	add	r2, r2, #8		/* each rel.dyn entry is 8 bytes */
-	cmp	r2, r3
-	blo	fixloop
-#endif
-
-relocate_done:
-
-	bx	lr
-
-_image_copy_end_ofs:
-	.word __image_copy_end - _start
-
-#ifndef CONFIG_SPL_BUILD
-
-_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
-
 	.globl	c_runtime_cpu_setup
 c_runtime_cpu_setup:
 
diff --git a/arch/arm/cpu/arm946es/start.S b/arch/arm/cpu/arm946es/start.S
index 9c2b70d..e31af6f 100644
--- a/arch/arm/cpu/arm946es/start.S
+++ b/arch/arm/cpu/arm946es/start.S
@@ -157,81 +157,6 @@ reset:
 
 	bl	_main
 
-/*------------------------------------------------------------------------------*/
-
-/*
- * void relocate_code(addr_moni)
- *
- * This function relocates the monitor code.
- */
-	.globl	relocate_code
-relocate_code:
-	mov	r6, r0	/* save addr of destination */
-
-	adr	r0, _start
-	subs	r9, r6, r0		/* r9 <- relocation offset */
-	beq	relocate_done		/* skip relocation */
-	mov	r1, r6			/* r1 <- scratch for copy_loop */
-	ldr	r3, _image_copy_end_ofs
-	add	r2, r0, r3		/* r2 <- source end address	    */
-
-copy_loop:
-	ldmia	r0!, {r10-r11}		/* copy from source address [r0]    */
-	stmia	r1!, {r10-r11}		/* copy to   target address [r1]    */
-	cmp	r0, r2			/* until source end address [r2]    */
-	blo	copy_loop
-
-#ifndef CONFIG_SPL_BUILD
-	/*
-	 * fix .rel.dyn relocations
-	 */
-	ldr	r0, _TEXT_BASE		/* r0 <- Text base */
-	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 */
-	add	r2, r2, r0		/* r2 <- rel dyn start in FLASH */
-	ldr	r3, _rel_dyn_end_ofs	/* r3 <- rel dyn end ofs */
-	add	r3, r3, r0		/* r3 <- rel dyn end in FLASH */
-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	r7, r1, #0xff
-	cmp	r7, #23			/* relative fixup? */
-	beq	fixrel
-	cmp	r7, #2			/* absolute fixup? */
-	beq	fixabs
-	/* ignore unknown type of fixup */
-	b	fixnext
-fixabs:
-	/* absolute fix: set location to (offset) symbol value */
-	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, r1, r9		/* r1 <- relocated sym addr */
-	b	fixnext
-fixrel:
-	/* relative fix: increase location by offset */
-	ldr	r1, [r0]
-	add	r1, r1, r9
-fixnext:
-	str	r1, [r0]
-	add	r2, r2, #8		/* each rel.dyn entry is 8 bytes */
-	cmp	r2, r3
-	blo	fixloop
-#endif
-
-relocate_done:
-
-	mov	pc, lr
-
-_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
-
 	.globl	c_runtime_cpu_setup
 c_runtime_cpu_setup:
 
diff --git a/arch/arm/cpu/arm_intcm/start.S b/arch/arm/cpu/arm_intcm/start.S
index 5e8c528..9cce12f 100644
--- a/arch/arm/cpu/arm_intcm/start.S
+++ b/arch/arm/cpu/arm_intcm/start.S
@@ -153,81 +153,6 @@ reset:
 
 	bl	_main
 
-/*------------------------------------------------------------------------------*/
-
-/*
- * void relocate_code(addr_moni)
- *
- * This function relocates the monitor code.
- */
-	.globl	relocate_code
-relocate_code:
-	mov	r6, r0	/* save addr of destination */
-
-	adr	r0, _start
-	subs	r9, r6, r0		/* r9 <- relocation offset */
-	beq	relocate_done		/* skip relocation */
-	mov	r1, r6			/* r1 <- scratch for copy_loop */
-	ldr	r3, _image_copy_end_ofs
-	add	r2, r0, r3		/* r2 <- source end address	    */
-
-copy_loop:
-	ldmia	r0!, {r10-r11}		/* copy from source address [r0]    */
-	stmia	r1!, {r10-r11}		/* copy to   target address [r1]    */
-	cmp	r0, r2			/* until source end address [r2]    */
-	blo	copy_loop
-
-#ifndef CONFIG_SPL_BUILD
-	/*
-	 * fix .rel.dyn relocations
-	 */
-	ldr	r0, _TEXT_BASE		/* r0 <- Text base */
-	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 */
-	add	r2, r2, r0		/* r2 <- rel dyn start in FLASH */
-	ldr	r3, _rel_dyn_end_ofs	/* r3 <- rel dyn end ofs */
-	add	r3, r3, r0		/* r3 <- rel dyn end in FLASH */
-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	r7, r1, #0xff
-	cmp	r7, #23			/* relative fixup? */
-	beq	fixrel
-	cmp	r7, #2			/* absolute fixup? */
-	beq	fixabs
-	/* ignore unknown type of fixup */
-	b	fixnext
-fixabs:
-	/* absolute fix: set location to (offset) symbol value */
-	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, r1, r9		/* r1 <- relocated sym addr */
-	b	fixnext
-fixrel:
-	/* relative fix: increase location by offset */
-	ldr	r1, [r0]
-	add	r1, r1, r9
-fixnext:
-	str	r1, [r0]
-	add	r2, r2, #8		/* each rel.dyn entry is 8 bytes */
-	cmp	r2, r3
-	blo	fixloop
-#endif
-
-relocate_done:
-
-	bx	lr
-
-_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
-
 	.globl	c_runtime_cpu_setup
 c_runtime_cpu_setup:
 
diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S
index 3ade510..bfdc22b 100644
--- a/arch/arm/cpu/armv7/start.S
+++ b/arch/arm/cpu/armv7/start.S
@@ -161,84 +161,6 @@ reset:
 
 	bl	_main
 
-/*------------------------------------------------------------------------------*/
-
-#ifndef CONFIG_SPL_BUILD
-/*
- * void relocate_code(addr_moni)
- *
- * This function relocates the monitor code.
- */
-ENTRY(relocate_code)
-	mov	r6, r0	/* save addr of destination */
-
-	adr	r0, _start
-	subs	r9, r6, r0		/* r9 <- relocation offset */
-	beq	relocate_done		/* skip relocation */
-	mov	r1, r6			/* r1 <- scratch for copy_loop */
-	ldr	r3, _image_copy_end_ofs
-	add	r2, r0, r3		/* r2 <- source end address	    */
-
-copy_loop:
-	ldmia	r0!, {r10-r11}		/* copy from source address [r0]    */
-	stmia	r1!, {r10-r11}		/* copy to   target address [r1]    */
-	cmp	r0, r2			/* until source end address [r2]    */
-	blo	copy_loop
-
-	/*
-	 * fix .rel.dyn relocations
-	 */
-	ldr	r0, _TEXT_BASE		/* r0 <- Text base */
-	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 */
-	add	r2, r2, r0		/* r2 <- rel dyn start in FLASH */
-	ldr	r3, _rel_dyn_end_ofs	/* r3 <- rel dyn end ofs */
-	add	r3, r3, r0		/* r3 <- rel dyn end in FLASH */
-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	r7, r1, #0xff
-	cmp	r7, #23			/* relative fixup? */
-	beq	fixrel
-	cmp	r7, #2			/* absolute fixup? */
-	beq	fixabs
-	/* ignore unknown type of fixup */
-	b	fixnext
-fixabs:
-	/* absolute fix: set location to (offset) symbol value */
-	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, r1, r9		/* r1 <- relocated sym addr */
-	b	fixnext
-fixrel:
-	/* relative fix: increase location by offset */
-	ldr	r1, [r0]
-	add	r1, r1, r9
-fixnext:
-	str	r1, [r0]
-	add	r2, r2, #8		/* each rel.dyn entry is 8 bytes */
-	cmp	r2, r3
-	blo	fixloop
-
-relocate_done:
-
-	bx	lr
-
-_image_copy_end_ofs:
-	.word __image_copy_end - _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
-ENDPROC(relocate_code)
-
-#endif
-
 ENTRY(c_runtime_cpu_setup)
 /*
  * If I-cache is enabled invalidate it
diff --git a/arch/arm/cpu/ixp/start.S b/arch/arm/cpu/ixp/start.S
index 69ef8aa..f9594d0 100644
--- a/arch/arm/cpu/ixp/start.S
+++ b/arch/arm/cpu/ixp/start.S
@@ -255,81 +255,6 @@ reset:
 
 	bl	_main
 
-/*------------------------------------------------------------------------------*/
-
-/*
- * void relocate_code(addr_moni)
- *
- * This function relocates the monitor code.
- */
-	.globl	relocate_code
-relocate_code:
-	mov	r6, r0	/* save addr of destination */
-
-	adr	r0, _start
-	subs	r9, r6, r0		/* r9 <- relocation offset */
-	beq	relocate_done		/* skip relocation */
-	mov	r1, r6			/* r1 <- scratch for copy_loop */
-	ldr	r3, _image_copy_end_ofs
-	add	r2, r0, r3		/* r2 <- source end address	    */
-
-copy_loop:
-	ldmia	r0!, {r10-r11}		/* copy from source address [r0]    */
-	stmia	r1!, {r10-r11}		/* copy to   target address [r1]    */
-	cmp	r0, r2			/* until source end address [r2]    */
-	blo	copy_loop
-
-#ifndef CONFIG_SPL_BUILD
-	/*
-	 * fix .rel.dyn relocations
-	 */
-	ldr	r0, _TEXT_BASE		/* r0 <- Text base */
-	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 */
-	add	r2, r2, r0		/* r2 <- rel dyn start in FLASH */
-	ldr	r3, _rel_dyn_end_ofs	/* r3 <- rel dyn end ofs */
-	add	r3, r3, r0		/* r3 <- rel dyn end in FLASH */
-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	r7, r1, #0xff
-	cmp	r7, #23			/* relative fixup? */
-	beq	fixrel
-	cmp	r7, #2			/* absolute fixup? */
-	beq	fixabs
-	/* ignore unknown type of fixup */
-	b	fixnext
-fixabs:
-	/* absolute fix: set location to (offset) symbol value */
-	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, r1, r9		/* r1 <- relocated sym addr */
-	b	fixnext
-fixrel:
-	/* relative fix: increase location by offset */
-	ldr	r1, [r0]
-	add	r1, r1, r9
-fixnext:
-	str	r1, [r0]
-	add	r2, r2, #8		/* each rel.dyn entry is 8 bytes */
-	cmp	r2, r3
-	blo	fixloop
-#endif
-
-relocate_done:
-
-	bx	lr
-
-_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
-
 	.globl	c_runtime_cpu_setup
 c_runtime_cpu_setup:
 
diff --git a/arch/arm/cpu/pxa/start.S b/arch/arm/cpu/pxa/start.S
index ada91a6..3078bec 100644
--- a/arch/arm/cpu/pxa/start.S
+++ b/arch/arm/cpu/pxa/start.S
@@ -170,90 +170,6 @@ reset:
 
 	bl	_main
 
-/*------------------------------------------------------------------------------*/
-#ifndef CONFIG_SPL_BUILD
-/*
- * void relocate_code(addr_moni)
- *
- * This function relocates the monitor code.
- */
-	.globl	relocate_code
-relocate_code:
-	mov	r6, r0	/* save addr of destination */
-
-/* Disable the Dcache RAM lock for stack now */
-#ifdef	CONFIG_CPU_PXA25X
-	mov	r12, lr
-	bl	cpu_init_crit
-	mov	lr, r12
-#endif
-
-	adr	r0, _start
-	subs	r9, r6, r0		/* r9 <- relocation offset */
-	beq	relocate_done		/* skip relocation */
-	mov	r1, r6			/* r1 <- scratch for copy_loop */
-	ldr	r3, _image_copy_end_ofs
-	add	r2, r0, r3		/* r2 <- source end address	    */
-
-copy_loop:
-	ldmia	r0!, {r10-r11}		/* copy from source address [r0]    */
-	stmia	r1!, {r10-r11}		/* copy to   target address [r1]    */
-	cmp	r0, r2			/* until source end address [r2]    */
-	blo	copy_loop
-
-#ifndef CONFIG_SPL_BUILD
-	/*
-	 * fix .rel.dyn relocations
-	 */
-	ldr	r0, _TEXT_BASE		/* r0 <- Text base */
-	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 */
-	add	r2, r2, r0		/* r2 <- rel dyn start in FLASH */
-	ldr	r3, _rel_dyn_end_ofs	/* r3 <- rel dyn end ofs */
-	add	r3, r3, r0		/* r3 <- rel dyn end in FLASH */
-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	r7, r1, #0xff
-	cmp	r7, #23			/* relative fixup? */
-	beq	fixrel
-	cmp	r7, #2			/* absolute fixup? */
-	beq	fixabs
-	/* ignore unknown type of fixup */
-	b	fixnext
-fixabs:
-	/* absolute fix: set location to (offset) symbol value */
-	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, r1, r9		/* r1 <- relocated sym addr */
-	b	fixnext
-fixrel:
-	/* relative fix: increase location by offset */
-	ldr	r1, [r0]
-	add	r1, r1, r9
-fixnext:
-	str	r1, [r0]
-	add	r2, r2, #8		/* each rel.dyn entry is 8 bytes */
-	cmp	r2, r3
-	blo	fixloop
-#endif
-
-relocate_done:
-
-	bx	lr
-
-_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
-
 	.globl	c_runtime_cpu_setup
 c_runtime_cpu_setup:
 
diff --git a/arch/arm/cpu/s3c44b0/start.S b/arch/arm/cpu/s3c44b0/start.S
index 7361aa2..4e1a444 100644
--- a/arch/arm/cpu/s3c44b0/start.S
+++ b/arch/arm/cpu/s3c44b0/start.S
@@ -138,81 +138,6 @@ reset:
 
 	bl	_main
 
-/*------------------------------------------------------------------------------*/
-
-/*
- * void relocate_code(addr_moni)
- *
- * This function relocates the monitor code.
- */
-	.globl	relocate_code
-relocate_code:
-	mov	r6, r0	/* save addr of destination */
-
-	adr	r0, _start
-	subs	r9, r6, r0		/* r9 <- relocation offset */
-	beq	relocate_done		/* skip relocation */
-	mov	r1, r6			/* r1 <- scratch for copy_loop */
-	ldr	r3, _image_copy_end_ofs
-	add	r2, r0, r3		/* r2 <- source end address	    */
-
-copy_loop:
-	ldmia	r0!, {r10-r11}		/* copy from source address [r0]    */
-	stmia	r1!, {r10-r11}		/* copy to   target address [r1]    */
-	cmp	r0, r2			/* until source end address [r2]    */
-	blo	copy_loop
-
-#ifndef CONFIG_SPL_BUILD
-	/*
-	 * fix .rel.dyn relocations
-	 */
-	ldr	r0, _TEXT_BASE		/* r0 <- Text base */
-	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 */
-	add	r2, r2, r0		/* r2 <- rel dyn start in FLASH */
-	ldr	r3, _rel_dyn_end_ofs	/* r3 <- rel dyn end ofs */
-	add	r3, r3, r0		/* r3 <- rel dyn end in FLASH */
-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	r7, r1, #0xff
-	cmp	r7, #23			/* relative fixup? */
-	beq	fixrel
-	cmp	r7, #2			/* absolute fixup? */
-	beq	fixabs
-	/* ignore unknown type of fixup */
-	b	fixnext
-fixabs:
-	/* absolute fix: set location to (offset) symbol value */
-	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, r1, r9		/* r1 <- relocated sym addr */
-	b	fixnext
-fixrel:
-	/* relative fix: increase location by offset */
-	ldr	r1, [r0]
-	add	r1, r1, r9
-fixnext:
-	str	r1, [r0]
-	add	r2, r2, #8		/* each rel.dyn entry is 8 bytes */
-	cmp	r2, r3
-	blo	fixloop
-#endif
-
-relocate_done:
-
-	bx	lr
-
-_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
-
 	.globl	c_runtime_cpu_setup
 c_runtime_cpu_setup:
 
diff --git a/arch/arm/cpu/sa1100/start.S b/arch/arm/cpu/sa1100/start.S
index 8a2eafd..c79f8c9 100644
--- a/arch/arm/cpu/sa1100/start.S
+++ b/arch/arm/cpu/sa1100/start.S
@@ -142,81 +142,6 @@ reset:
 
 	bl	_main
 
-/*------------------------------------------------------------------------------*/
-
-/*
- * void relocate_code(addr_moni)
- *
- * This function relocates the monitor code.
- */
-	.globl	relocate_code
-relocate_code:
-	mov	r6, r0	/* save addr of destination */
-
-	adr	r0, _start
-	subs	r9, r6, r0		/* r9 <- relocation offset */
-	beq	relocate_done		/* skip relocation */
-	mov	r1, r6			/* r1 <- scratch for copy_loop */
-	ldr	r3, _image_copy_end_ofs
-	add	r2, r0, r3		/* r2 <- source end address	    */
-
-copy_loop:
-	ldmia	r0!, {r10-r11}		/* copy from source address [r0]    */
-	stmia	r1!, {r10-r11}		/* copy to   target address [r1]    */
-	cmp	r0, r2			/* until source end address [r2]    */
-	blo	copy_loop
-
-#ifndef CONFIG_SPL_BUILD
-	/*
-	 * fix .rel.dyn relocations
-	 */
-	ldr	r0, _TEXT_BASE		/* r0 <- Text base */
-	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 */
-	add	r2, r2, r0		/* r2 <- rel dyn start in FLASH */
-	ldr	r3, _rel_dyn_end_ofs	/* r3 <- rel dyn end ofs */
-	add	r3, r3, r0		/* r3 <- rel dyn end in FLASH */
-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	r7, r1, #0xff
-	cmp	r7, #23			/* relative fixup? */
-	beq	fixrel
-	cmp	r7, #2			/* absolute fixup? */
-	beq	fixabs
-	/* ignore unknown type of fixup */
-	b	fixnext
-fixabs:
-	/* absolute fix: set location to (offset) symbol value */
-	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, r1, r9		/* r1 <- relocated sym addr */
-	b	fixnext
-fixrel:
-	/* relative fix: increase location by offset */
-	ldr	r1, [r0]
-	add	r1, r1, r9
-fixnext:
-	str	r1, [r0]
-	add	r2, r2, #8		/* each rel.dyn entry is 8 bytes */
-	cmp	r2, r3
-	blo	fixloop
-#endif
-
-relocate_done:
-
-	mov	pc, lr
-
-_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
-
 	.globl	c_runtime_cpu_setup
 c_runtime_cpu_setup:
 
diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile
index ac51cc1..f8349c5 100644
--- a/arch/arm/lib/Makefile
+++ b/arch/arm/lib/Makefile
@@ -36,7 +36,7 @@ GLSOBJS	+= _umodsi3.o
 
 GLCOBJS	+= div0.o
 
-SOBJS-y += crt0.o
+SOBJS-y += crt0.o relocate.o
 
 ifndef CONFIG_SPL_BUILD
 ifndef CONFIG_SYS_GENERIC_BOARD
diff --git a/arch/arm/lib/relocate.S b/arch/arm/lib/relocate.S
new file mode 100644
index 0000000..ce533ca
--- /dev/null
+++ b/arch/arm/lib/relocate.S
@@ -0,0 +1,100 @@
+/*
+ *  relocate - common relocation function for ARM U-Boot
+ *
+ *  Copyright (c) 2013  Albert ARIBAUD <albert.u.boot@aribaud.net>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * These are defined in the board-specific linker script.
+ * Subtracting _start from them lets the linker put their
+ * relative position in the executable instead of leaving
+ * them null.
+ */
+
+	.globl	__image_copy_start
+	.globl	__image_copy_end
+	.globl	__rel_dyn_start
+	.globl	__rel_dyn_end
+	.globl	__dynsym_start
+
+/*------------------------------------------------------------------------------*/
+
+/*
+ * void relocate_code(addr_moni)
+ *
+ * This function relocates the monitor code.
+ */
+	.globl	relocate_code
+relocate_code:
+	mov	r6, r0	/* save addr of destination */
+
+	ldr	r0, =_start
+	subs	r9, r6, r0		/* r9 <- relocation offset */
+	beq	relocate_done		/* skip relocation */
+	mov	r1, r6			/* r1 <- scratch for copy_loop */
+	ldr	r2, =__image_copy_end
+
+copy_loop:
+	ldmia	r0!, {r10-r11}		/* copy from source address [r0]    */
+	stmia	r1!, {r10-r11}		/* copy to   target address [r1]    */
+	cmp	r0, r2			/* until source end address [r2]    */
+	blo	copy_loop
+
+#ifndef CONFIG_SPL_BUILD
+	/*
+	 * fix .rel.dyn relocations
+	 */
+	ldr	r0, =_TEXT_BASE		/* r0 <- Text base */
+	ldr	r10, =__dynsym_start	/* r10 <- sym table ofs */
+	ldr	r2, =__rel_dyn_start	/* r2 <- rel dyn start ofs */
+	ldr	r3, =__rel_dyn_end	/* r3 <- rel dyn end ofs */
+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	r7, r1, #0xff
+	cmp	r7, #23			/* relative fixup? */
+	beq	fixrel
+	cmp	r7, #2			/* absolute fixup? */
+	beq	fixabs
+	/* ignore unknown type of fixup */
+	b	fixnext
+fixabs:
+	/* absolute fix: set location to (offset) symbol value */
+	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, r1, r9		/* r1 <- relocated sym addr */
+	b	fixnext
+fixrel:
+	/* relative fix: increase location by offset */
+	ldr	r1, [r0]
+	add	r1, r1, r9
+fixnext:
+	str	r1, [r0]
+	add	r2, r2, #8		/* each rel.dyn entry is 8 bytes */
+	cmp	r2, r3
+	blo	fixloop
+#endif
+
+relocate_done:
+
+	bx	lr
-- 
1.7.10.4

  reply	other threads:[~2013-05-10 21:56 UTC|newest]

Thread overview: 64+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-05-10 21:56 [U-Boot] [PATCH 0/4] Factorize ARM relocation code Albert ARIBAUD
2013-05-10 21:56 ` [U-Boot] [PATCH 1/4] Rename arch/arm/lib/bss.c to sections.c Albert ARIBAUD
2013-05-10 21:56   ` [U-Boot] [PATCH 2/4] arm: make __image_copy_{start, end} compiler-generated Albert ARIBAUD
2013-05-10 21:56     ` [U-Boot] [PATCH 3/4] arm: make relocation section symbols compiler-generated Albert ARIBAUD
2013-05-10 21:56       ` Albert ARIBAUD [this message]
2013-05-11  2:04         ` [U-Boot] [PATCH 4/4] arm: factorize relocate_code routine Benoît Thébaudeau
2013-05-11  7:40           ` Albert ARIBAUD
2013-05-11 13:40             ` Benoît Thébaudeau
2013-05-11 22:13         ` Simon Glass
2013-05-11  0:25     ` [U-Boot] [PATCH 2/4] arm: make __image_copy_{start, end} compiler-generated Benoît Thébaudeau
2013-05-11  8:02       ` Albert ARIBAUD
2013-05-11 17:52         ` Benoît Thébaudeau
2013-05-11 20:13           ` Albert ARIBAUD
2013-05-12  8:57             ` Albert ARIBAUD
2013-05-14  9:50 ` [U-Boot] [PATCH v2 0/4] Factorize ARM relocate_code instances Albert ARIBAUD
2013-05-14  9:50   ` [U-Boot] [PATCH v2 1/4] mx31pdk: copy SPL directly, not using relocate_code Albert ARIBAUD
2013-05-14  9:50     ` [U-Boot] [PATCH v2 2/4] tx25: " Albert ARIBAUD
2013-05-14  9:50       ` [U-Boot] [PATCH v2 3/4] arm: do not compile relocate_code() for SPL builds Albert ARIBAUD
2013-05-14  9:50         ` [U-Boot] [PATCH v2 4/4] arm: factorize relocate_code routine Albert ARIBAUD
2013-05-14 16:01           ` Benoît Thébaudeau
2013-05-14 16:32             ` Albert ARIBAUD
2013-05-14 17:17               ` Benoît Thébaudeau
2013-05-14 18:51                 ` Albert ARIBAUD
2013-05-14 18:49                   ` Benoît Thébaudeau
2013-05-15  7:31             ` Albert ARIBAUD
2013-05-15  8:30               ` Albert ARIBAUD
2013-05-15 16:36                 ` Benoît Thébaudeau
2013-05-15 17:55                   ` Albert ARIBAUD
2013-05-16 14:29                     ` Albert ARIBAUD
2013-05-16 14:28                       ` Benoît Thébaudeau
2013-05-16 14:52                         ` Albert ARIBAUD
2013-05-16 14:56                           ` Albert ARIBAUD
2013-05-14 15:21         ` [U-Boot] [PATCH v2 3/4] arm: do not compile relocate_code() for SPL builds Benoît Thébaudeau
2013-05-14 16:21           ` Albert ARIBAUD
2013-05-14 17:12             ` Benoît Thébaudeau
2013-05-14 15:15       ` [U-Boot] [PATCH v2 2/4] tx25: copy SPL directly, not using relocate_code Benoît Thébaudeau
2013-05-14 15:14     ` [U-Boot] [PATCH v2 1/4] mx31pdk: " Benoît Thébaudeau
2013-05-14 16:13       ` Albert ARIBAUD
2013-05-14 17:10         ` Benoît Thébaudeau
2013-05-14 18:24           ` Albert ARIBAUD
2013-05-14  9:55   ` [U-Boot] [PATCH v2 0/4] Factorize ARM relocate_code instances Albert ARIBAUD
2013-05-16 12:02   ` [U-Boot] [PATCH v3 " Albert ARIBAUD
2013-05-16 12:02     ` [U-Boot] [PATCH v3 1/4] mx31pdk: copy SPL directly, not using relocate_code Albert ARIBAUD
2013-05-16 12:02       ` [U-Boot] [PATCH v3 2/4] tx25: " Albert ARIBAUD
2013-05-16 12:02         ` [U-Boot] [PATCH v3 3/4] arm: do not compile relocate_code() for SPL builds Albert ARIBAUD
2013-05-16 12:02           ` [U-Boot] [PATCH v3 4/4] arm: factorize relocate_code routine Albert ARIBAUD
2013-05-16 15:56             ` Benoît Thébaudeau
2013-05-16 16:57               ` Albert ARIBAUD
2013-05-16 14:53     ` [U-Boot] [PATCH v3 0/4] Factorize ARM relocate_code instances Albert ARIBAUD
2013-05-16 14:55       ` Albert ARIBAUD
2013-05-19 11:48     ` [U-Boot] [PATCH v4 " Albert ARIBAUD
2013-05-19 11:48       ` [U-Boot] [PATCH v4 1/4] mx31pdk: copy SPL directly, not using relocate_code Albert ARIBAUD
2013-05-19 11:48         ` [U-Boot] [PATCH v4 2/4] tx25: " Albert ARIBAUD
2013-05-19 11:48           ` [U-Boot] [PATCH v4 3/4] arm: do not compile relocate_code() for SPL builds Albert ARIBAUD
2013-05-19 11:48             ` [U-Boot] [PATCH v4 4/4] arm: factorize relocate_code routine Albert ARIBAUD
2013-05-19 15:57       ` [U-Boot] [PATCH v4 0/4] Factorize ARM relocate_code instances Benoît Thébaudeau
2013-05-20  9:26         ` Albert ARIBAUD
2013-05-20 15:39           ` Benoît Thébaudeau
2013-05-21 13:24             ` Fabio Estevam
2013-05-28 13:28               ` Albert ARIBAUD
2013-05-29 12:57                 ` Fabio Estevam
2013-05-27 14:56           ` Simon Glass
2013-05-27 16:16             ` Albert ARIBAUD
2013-05-27 16:37               ` Simon Glass

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