arm: move exception handling out of start.S files

Exception handling is basically identical for all ARM targets.
Factorize it out of the various start.S files and into a
single vectors.S file, and adjust linker scripts accordingly.

Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>

arch/arm/cpu/arm1136/start.S

@@ -15,46 +15,7 @@
 #include <asm-offsets.h>
 #include <config.h>
 #include <version.h>
-.globl _start
-_start: b	reset
-#ifdef CONFIG_SPL_BUILD
-	ldr	pc, _hang
-	ldr	pc, _hang
-	ldr	pc, _hang
-	ldr	pc, _hang
-	ldr	pc, _hang
-	ldr	pc, _hang
-	ldr	pc, _hang
 
-_hang:
-	.word	do_hang
-	.word	0x12345678
-	.word	0x12345678
-	.word	0x12345678
-	.word	0x12345678
-	.word	0x12345678
-	.word	0x12345678
-	.word	0x12345678	/* now 16*4=64 */
-#else
-	ldr	pc, _undefined_instruction
-	ldr	pc, _software_interrupt
-	ldr	pc, _prefetch_abort
-	ldr	pc, _data_abort
-	ldr	pc, _not_used
-	ldr	pc, _irq
-	ldr	pc, _fiq
-
-_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 */
-#endif	/* CONFIG_SPL_BUILD */
-
-	.balignl 16,0xdeadbeef
 /*
  *************************************************************************
  *
@@ -68,26 +29,7 @@ _pad:			.word 0x12345678 /* now 16*4=64 */
  *************************************************************************
  */
 
-#ifdef CONFIG_USE_IRQ
+	.globl	reset
-/* IRQ stack memory (calculated at run-time) */
-.globl IRQ_STACK_START
-IRQ_STACK_START:
-	.word	0x0badc0de
-
-/* IRQ stack memory (calculated at run-time) */
-.globl FIQ_STACK_START
-FIQ_STACK_START:
-	.word 0x0badc0de
-#endif
-
-/* IRQ stack memory (calculated at run-time) + 8 bytes */
-.globl IRQ_STACK_START_IN
-IRQ_STACK_START_IN:
-	.word	0x0badc0de
-
-/*
- * the actual reset code
- */
 
 reset:
 	/*
@@ -150,185 +92,3 @@ cpu_init_crit:
 	mov	lr, ip		/* restore link */
 	mov	pc, lr		/* back to my caller */
 #endif /* CONFIG_SKIP_LOWLEVEL_INIT */
-
-#ifndef CONFIG_SPL_BUILD
-/*
- *************************************************************************
- *
- * Interrupt handling
- *
- *************************************************************************
- */
-@
-@ IRQ stack frame.
-@
-#define S_FRAME_SIZE	72
-
-#define S_OLD_R0	68
-#define S_PSR		64
-#define S_PC		60
-#define S_LR		56
-#define S_SP		52
-
-#define S_IP		48
-#define S_FP		44
-#define S_R10		40
-#define S_R9		36
-#define S_R8		32
-#define S_R7		28
-#define S_R6		24
-#define S_R5		20
-#define S_R4		16
-#define S_R3		12
-#define S_R2		8
-#define S_R1		4
-#define S_R0		0
-
-#define MODE_SVC 0x13
-#define I_BIT	 0x80
-
-/*
- * use bad_save_user_regs for abort/prefetch/undef/swi ...
- * use irq_save_user_regs / irq_restore_user_regs for IRQ/FIQ handling
- */
-
-	.macro	bad_save_user_regs
-	sub	sp, sp, #S_FRAME_SIZE		@ carve out a frame on current user stack
-	stmia	sp, {r0 - r12}			@ Save user registers (now in svc mode) r0-r12
-
-	ldr	r2, IRQ_STACK_START_IN		@ set base 2 words into abort stack
-	ldmia	r2, {r2 - r3}			@ get values for "aborted" pc and cpsr (into parm regs)
-	add	r0, sp, #S_FRAME_SIZE		@ grab pointer to old stack
-
-	add	r5, sp, #S_SP
-	mov	r1, lr
-	stmia	r5, {r0 - r3}			@ save sp_SVC, lr_SVC, pc, cpsr
-	mov	r0, sp				@ save current stack into r0 (param register)
-	.endm
-
-	.macro	irq_save_user_regs
-	sub	sp, sp, #S_FRAME_SIZE
-	stmia	sp, {r0 - r12}			@ Calling r0-r12
-	add	r8, sp, #S_PC			@ !!!! R8 NEEDS to be saved !!!! a reserved stack spot would be good.
-	stmdb	r8, {sp, lr}^			@ Calling SP, LR
-	str	lr, [r8, #0]			@ Save calling PC
-	mrs	r6, spsr
-	str	r6, [r8, #4]			@ Save CPSR
-	str	r0, [r8, #8]			@ Save OLD_R0
-	mov	r0, sp
-	.endm
-
-	.macro	irq_restore_user_regs
-	ldmia	sp, {r0 - lr}^			@ Calling r0 - lr
-	mov	r0, r0
-	ldr	lr, [sp, #S_PC]			@ Get PC
-	add	sp, sp, #S_FRAME_SIZE
-	subs	pc, lr, #4			@ return & move spsr_svc into cpsr
-	.endm
-
-	.macro get_bad_stack
-	ldr	r13, IRQ_STACK_START_IN		@ setup our mode stack (enter in banked mode)
-
-	str	lr, [r13]			@ save caller lr in position 0 of saved stack
-	mrs	lr, spsr			@ get the spsr
-	str	lr, [r13, #4]			@ save spsr in position 1 of saved stack
-
-	mov	r13, #MODE_SVC			@ prepare SVC-Mode
-	@ msr	spsr_c, r13
-	msr	spsr, r13			@ switch modes, make sure moves will execute
-	mov	lr, pc				@ capture return pc
-	movs	pc, lr				@ jump to next instruction & switch modes.
-	.endm
-
-	.macro get_bad_stack_swi
-	sub	r13, r13, #4			@ space on current stack for scratch reg.
-	str	r0, [r13]			@ save R0's value.
-	ldr	r0, IRQ_STACK_START_IN		@ get data regions start
-	str	lr, [r0]			@ save caller lr in position 0 of saved stack
-	mrs	lr, spsr			@ get the spsr
-	str	lr, [r0, #4]			@ save spsr in position 1 of saved stack
-	ldr	lr, [r0]			@ restore lr
-	ldr	r0, [r13]			@ restore r0
-	add	r13, r13, #4			@ pop stack entry
-	.endm
-
-	.macro get_irq_stack			@ setup IRQ stack
-	ldr	sp, IRQ_STACK_START
-	.endm
-
-	.macro get_fiq_stack			@ setup FIQ stack
-	ldr	sp, FIQ_STACK_START
-	.endm
-#endif	/* CONFIG_SPL_BUILD */
-
-/*
- * exception handlers
- */
-#ifdef CONFIG_SPL_BUILD
-	.align	5
-do_hang:
-	bl	hang				/* hang and never return */
-#else	/* !CONFIG_SPL_BUILD */
-	.align	5
-undefined_instruction:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_undefined_instruction
-
-	.align	5
-software_interrupt:
-	get_bad_stack_swi
-	bad_save_user_regs
-	bl	do_software_interrupt
-
-	.align	5
-prefetch_abort:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_prefetch_abort
-
-	.align	5
-data_abort:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_data_abort
-
-	.align	5
-not_used:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_not_used
-
-#ifdef CONFIG_USE_IRQ
-
-	.align	5
-irq:
-	get_irq_stack
-	irq_save_user_regs
-	bl	do_irq
-	irq_restore_user_regs
-
-	.align	5
-fiq:
-	get_fiq_stack
-	/* someone ought to write a more effiction fiq_save_user_regs */
-	irq_save_user_regs
-	bl	do_fiq
-	irq_restore_user_regs
-
-#else
-
-	.align	5
-irq:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_irq
-
-	.align	5
-fiq:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_fiq
-
-#endif
-#endif	/* CONFIG_SPL_BUILD */

arch/arm/cpu/arm1176/start.S

@@ -22,46 +22,6 @@
 #define CONFIG_SYS_PHY_UBOOT_BASE	CONFIG_SYS_UBOOT_BASE
 #endif
 
-/*
- *************************************************************************
- *
- * Jump vector table as in table 3.1 in [1]
- *
- *************************************************************************
- */
-
-.globl _start
-_start: b	reset
-#ifndef CONFIG_SPL_BUILD
-	ldr	pc, _undefined_instruction
-	ldr	pc, _software_interrupt
-	ldr	pc, _prefetch_abort
-	ldr	pc, _data_abort
-	ldr	pc, _not_used
-	ldr	pc, _irq
-	ldr	pc, _fiq
-
-_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
-	. = _start + 64
-#endif
-
-	.balignl 16,0xdeadbeef
 /*
  *************************************************************************
  *
@@ -75,14 +35,7 @@ _pad:
  *************************************************************************
  */
 
-/* IRQ stack memory (calculated at run-time) + 8 bytes */
+	.globl reset
-.globl IRQ_STACK_START_IN
-IRQ_STACK_START_IN:
-	.word	0x0badc0de
-
-/*
- * the actual reset code
- */
 
 reset:
 	/*
@@ -180,150 +133,3 @@ skip_tcmdisable:
 c_runtime_cpu_setup:
 
 	mov	pc, lr
-
-#ifndef CONFIG_SPL_BUILD
-/*
- *************************************************************************
- *
- * Interrupt handling
- *
- *************************************************************************
- */
-@
-@ IRQ stack frame.
-@
-#define S_FRAME_SIZE	72
-
-#define S_OLD_R0	68
-#define S_PSR		64
-#define S_PC		60
-#define S_LR		56
-#define S_SP		52
-
-#define S_IP		48
-#define S_FP		44
-#define S_R10		40
-#define S_R9		36
-#define S_R8		32
-#define S_R7		28
-#define S_R6		24
-#define S_R5		20
-#define S_R4		16
-#define S_R3		12
-#define S_R2		8
-#define S_R1		4
-#define S_R0		0
-
-#define MODE_SVC 0x13
-#define I_BIT	 0x80
-
-/*
- * use bad_save_user_regs for abort/prefetch/undef/swi ...
- */
-
-	.macro	bad_save_user_regs
-	/* carve out a frame on current user stack */
-	sub	sp, sp, #S_FRAME_SIZE
-	/* Save user registers (now in svc mode) r0-r12 */
-	stmia	sp, {r0 - r12}
-
-	ldr	r2, IRQ_STACK_START_IN
-	/* get values for "aborted" pc and cpsr (into parm regs) */
-	ldmia	r2, {r2 - r3}
-	/* grab pointer to old stack */
-	add	r0, sp, #S_FRAME_SIZE
-
-	add	r5, sp, #S_SP
-	mov	r1, lr
-	/* save sp_SVC, lr_SVC, pc, cpsr */
-	stmia	r5, {r0 - r3}
-	/* save current stack into r0 (param register) */
-	mov	r0, sp
-	.endm
-
-	.macro get_bad_stack
-	ldr	r13, IRQ_STACK_START_IN		@ setup our mode stack
-
-	/* save caller lr in position 0 of saved stack */
-	str	lr, [r13]
-	/* get the spsr */
-	mrs	lr, spsr
-	/* save spsr in position 1 of saved stack */
-	str	lr, [r13, #4]
-
-	/* prepare SVC-Mode */
-	mov	r13, #MODE_SVC
-	@ msr	spsr_c, r13
-	/* switch modes, make sure moves will execute */
-	msr	spsr, r13
-	/* capture return pc */
-	mov	lr, pc
-	/* jump to next instruction & switch modes. */
-	movs	pc, lr
-	.endm
-
-	.macro get_bad_stack_swi
-	/* space on current stack for scratch reg. */
-	sub	r13, r13, #4
-	/* save R0's value. */
-	str	r0, [r13]
-	ldr	r13, IRQ_STACK_START_IN		@ setup our mode stack
-	/* save caller lr in position 0 of saved stack */
-	str	lr, [r0]
-	/* get the spsr */
-	mrs	lr, spsr
-	/* save spsr in position 1 of saved stack */
-	str	lr, [r0, #4]
-	/* restore lr */
-	ldr	lr, [r0]
-	/* restore r0 */
-	ldr	r0, [r13]
-	/* pop stack entry */
-	add	r13, r13, #4
-	.endm
-
-/*
- * exception handlers
- */
-	.align	5
-undefined_instruction:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_undefined_instruction
-
-	.align	5
-software_interrupt:
-	get_bad_stack_swi
-	bad_save_user_regs
-	bl	do_software_interrupt
-
-	.align	5
-prefetch_abort:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_prefetch_abort
-
-	.align	5
-data_abort:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_data_abort
-
-	.align	5
-not_used:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_not_used
-
-	.align	5
-irq:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_irq
-
-	.align	5
-fiq:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_fiq
-#endif /* CONFIG_SPL_BUILD */

arch/arm/cpu/arm720t/start.S

@@ -12,48 +12,6 @@
 #include <version.h>
 #include <asm/hardware.h>
 
-/*
- *************************************************************************
- *
- * Jump vector table as in table 3.1 in [1]
- *
- *************************************************************************
- */
-
-
-.globl _start
-_start: b	reset
-	ldr	pc, _undefined_instruction
-	ldr	pc, _software_interrupt
-	ldr	pc, _prefetch_abort
-	ldr	pc, _data_abort
-	ldr	pc, _not_used
-	ldr	pc, _irq
-	ldr	pc, _fiq
-
-#ifdef CONFIG_SPL_BUILD
-_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
-_data_abort:		.word data_abort
-_not_used:		.word not_used
-_irq:			.word irq
-_fiq:			.word fiq
-_pad:			.word 0x12345678 /* now 16*4=64 */
-#endif	/* CONFIG_SPL_BUILD */
-
-	.balignl 16,0xdeadbeef
-
-
 /*
  *************************************************************************
  *
@@ -67,26 +25,7 @@ _pad:			.word 0x12345678 /* now 16*4=64 */
  *************************************************************************
  */
 
-#ifdef CONFIG_USE_IRQ
+	.globl	reset
-/* IRQ stack memory (calculated at run-time) */
-.globl IRQ_STACK_START
-IRQ_STACK_START:
-	.word	0x0badc0de
-
-/* IRQ stack memory (calculated at run-time) */
-.globl FIQ_STACK_START
-FIQ_STACK_START:
-	.word 0x0badc0de
-#endif
-
-/* IRQ stack memory (calculated at run-time) + 8 bytes */
-.globl IRQ_STACK_START_IN
-IRQ_STACK_START_IN:
-	.word	0x0badc0de
-
-/*
- * the actual reset code
- */
 
 reset:
 	/*
@@ -139,169 +78,3 @@ cpu_init_crit:
 
 	mov	pc, lr
 #endif /* CONFIG_SKIP_LOWLEVEL_INIT */
-
-
-#ifndef CONFIG_SPL_BUILD
-/*
- *************************************************************************
- *
- * Interrupt handling
- *
- *************************************************************************
- */
-
-@
-@ IRQ stack frame.
-@
-#define S_FRAME_SIZE	72
-
-#define S_OLD_R0	68
-#define S_PSR		64
-#define S_PC		60
-#define S_LR		56
-#define S_SP		52
-
-#define S_IP		48
-#define S_FP		44
-#define S_R10		40
-#define S_R9		36
-#define S_R8		32
-#define S_R7		28
-#define S_R6		24
-#define S_R5		20
-#define S_R4		16
-#define S_R3		12
-#define S_R2		8
-#define S_R1		4
-#define S_R0		0
-
-#define MODE_SVC 0x13
-#define I_BIT	 0x80
-
-/*
- * use bad_save_user_regs for abort/prefetch/undef/swi ...
- * use irq_save_user_regs / irq_restore_user_regs for IRQ/FIQ handling
- */
-
-	.macro	bad_save_user_regs
-	sub	sp, sp, #S_FRAME_SIZE
-	stmia	sp, {r0 - r12}			@ Calling r0-r12
-	add	r8, sp, #S_PC
-
-	ldr	r2, IRQ_STACK_START_IN
-	ldmia	r2, {r2 - r4}			@ get pc, cpsr, old_r0
-	add	r0, sp, #S_FRAME_SIZE		@ restore sp_SVC
-
-	add	r5, sp, #S_SP
-	mov	r1, lr
-	stmia	r5, {r0 - r4}			@ save sp_SVC, lr_SVC, pc, cpsr, old_r
-	mov	r0, sp
-	.endm
-
-	.macro	irq_save_user_regs
-	sub	sp, sp, #S_FRAME_SIZE
-	stmia	sp, {r0 - r12}			@ Calling r0-r12
-	add	r8, sp, #S_PC
-	stmdb	r8, {sp, lr}^			@ Calling SP, LR
-	str	lr, [r8, #0]			@ Save calling PC
-	mrs	r6, spsr
-	str	r6, [r8, #4]			@ Save CPSR
-	str	r0, [r8, #8]			@ Save OLD_R0
-	mov	r0, sp
-	.endm
-
-	.macro	irq_restore_user_regs
-	ldmia	sp, {r0 - lr}^			@ Calling r0 - lr
-	mov	r0, r0
-	ldr	lr, [sp, #S_PC]			@ Get PC
-	add	sp, sp, #S_FRAME_SIZE
-	subs	pc, lr, #4			@ return & move spsr_svc into cpsr
-	.endm
-
-	.macro get_bad_stack
-	ldr	r13, IRQ_STACK_START_IN		@ setup our mode stack
-
-	str	lr, [r13]			@ save caller lr / spsr
-	mrs	lr, spsr
-	str	lr, [r13, #4]
-
-	mov	r13, #MODE_SVC			@ prepare SVC-Mode
-	msr	spsr_c, r13
-	mov	lr, pc
-	movs	pc, lr
-	.endm
-
-	.macro get_irq_stack			@ setup IRQ stack
-	ldr	sp, IRQ_STACK_START
-	.endm
-
-	.macro get_fiq_stack			@ setup FIQ stack
-	ldr	sp, FIQ_STACK_START
-	.endm
-
-/*
- * exception handlers
- */
-	.align	5
-undefined_instruction:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_undefined_instruction
-
-	.align	5
-software_interrupt:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_software_interrupt
-
-	.align	5
-prefetch_abort:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_prefetch_abort
-
-	.align	5
-data_abort:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_data_abort
-
-	.align	5
-not_used:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_not_used
-
-#ifdef CONFIG_USE_IRQ
-
-	.align	5
-irq:
-	get_irq_stack
-	irq_save_user_regs
-	bl	do_irq
-	irq_restore_user_regs
-
-	.align	5
-fiq:
-	get_fiq_stack
-	/* someone ought to write a more effiction fiq_save_user_regs */
-	irq_save_user_regs
-	bl	do_fiq
-	irq_restore_user_regs
-
-#else
-
-	.align	5
-irq:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_irq
-
-	.align	5
-fiq:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_fiq
-
-#endif
-#endif /* CONFIG_SPL_BUILD */

arch/arm/cpu/arm920t/ep93xx/u-boot.lds

@@ -16,7 +16,8 @@ SECTIONS
 	.text      :
 	{
 		*(.__image_copy_start)
-	  arch/arm/cpu/arm920t/start.o	(.text*)
+		*(.vectors)
+		arch/arm/cpu/arm920t/start.o	(.text*)
 		/* the EP93xx expects to find the pattern 'CRUS' at 0x1000 */
 	  . = 0x1000;
 	  LONG(0x53555243)

arch/arm/cpu/arm920t/start.S

@@ -12,36 +12,6 @@
 #include <common.h>
 #include <config.h>
 
-/*
- *************************************************************************
- *
- * Jump vector table as in table 3.1 in [1]
- *
- *************************************************************************
- */
-
-
-.globl _start
-_start:	b	start_code
-	ldr	pc, _undefined_instruction
-	ldr	pc, _software_interrupt
-	ldr	pc, _prefetch_abort
-	ldr	pc, _data_abort
-	ldr	pc, _not_used
-	ldr	pc, _irq
-	ldr	pc, _fiq
-
-_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
-
-	.balignl 16,0xdeadbeef
-
-
 /*
  *************************************************************************
  *
@@ -55,28 +25,9 @@ _fiq:			.word fiq
  *************************************************************************
  */
 
-#ifdef CONFIG_USE_IRQ
+	.globl	reset
-/* IRQ stack memory (calculated at run-time) */
-.globl IRQ_STACK_START
-IRQ_STACK_START:
-	.word	0x0badc0de
 
-/* IRQ stack memory (calculated at run-time) */
+reset:
-.globl FIQ_STACK_START
-FIQ_STACK_START:
-	.word 0x0badc0de
-#endif
-
-/* IRQ stack memory (calculated at run-time) + 8 bytes */
-.globl IRQ_STACK_START_IN
-IRQ_STACK_START_IN:
-	.word	0x0badc0de
-
-/*
- * the actual start code
- */
-
-start_code:
 	/*
 	 * set the cpu to SVC32 mode
 	 */
@@ -196,166 +147,3 @@ cpu_init_crit:
 	mov	lr, ip
 	mov	pc, lr
 #endif /* CONFIG_SKIP_LOWLEVEL_INIT */
-
-/*
- *************************************************************************
- *
- * Interrupt handling
- *
- *************************************************************************
- */
-
-@
-@ IRQ stack frame.
-@
-#define S_FRAME_SIZE	72
-
-#define S_OLD_R0	68
-#define S_PSR		64
-#define S_PC		60
-#define S_LR		56
-#define S_SP		52
-
-#define S_IP		48
-#define S_FP		44
-#define S_R10		40
-#define S_R9		36
-#define S_R8		32
-#define S_R7		28
-#define S_R6		24
-#define S_R5		20
-#define S_R4		16
-#define S_R3		12
-#define S_R2		8
-#define S_R1		4
-#define S_R0		0
-
-#define MODE_SVC	0x13
-#define I_BIT		0x80
-
-/*
- * use bad_save_user_regs for abort/prefetch/undef/swi ...
- * use irq_save_user_regs / irq_restore_user_regs for IRQ/FIQ handling
- */
-
-	.macro	bad_save_user_regs
-	sub	sp, sp, #S_FRAME_SIZE
-	stmia	sp, {r0 - r12}			@ Calling r0-r12
-	ldr	r2, IRQ_STACK_START_IN
-	ldmia	r2, {r2 - r3}			@ get pc, cpsr
-	add	r0, sp, #S_FRAME_SIZE		@ restore sp_SVC
-
-	add	r5, sp, #S_SP
-	mov	r1, lr
-	stmia	r5, {r0 - r3}			@ save sp_SVC, lr_SVC, pc, cpsr
-	mov	r0, sp
-	.endm
-
-	.macro	irq_save_user_regs
-	sub	sp, sp, #S_FRAME_SIZE
-	stmia	sp, {r0 - r12}			@ Calling r0-r12
-	add	r7, sp, #S_PC
-	stmdb	r7, {sp, lr}^			@ Calling SP, LR
-	str	lr, [r7, #0]			@ Save calling PC
-	mrs	r6, spsr
-	str	r6, [r7, #4]			@ Save CPSR
-	str	r0, [r7, #8]			@ Save OLD_R0
-	mov	r0, sp
-	.endm
-
-	.macro	irq_restore_user_regs
-	ldmia	sp, {r0 - lr}^			@ Calling r0 - lr
-	mov	r0, r0
-	ldr	lr, [sp, #S_PC]			@ Get PC
-	add	sp, sp, #S_FRAME_SIZE
-	/* return & move spsr_svc into cpsr */
-	subs	pc, lr, #4
-	.endm
-
-	.macro get_bad_stack
-	ldr	r13, IRQ_STACK_START_IN		@ setup our mode stack
-
-	str	lr, [r13]			@ save caller lr / spsr
-	mrs	lr, spsr
-	str	lr, [r13, #4]
-
-	mov	r13, #MODE_SVC			@ prepare SVC-Mode
-	@ msr	spsr_c, r13
-	msr	spsr, r13
-	mov	lr, pc
-	movs	pc, lr
-	.endm
-
-	.macro get_irq_stack			@ setup IRQ stack
-	ldr	sp, IRQ_STACK_START
-	.endm
-
-	.macro get_fiq_stack			@ setup FIQ stack
-	ldr	sp, FIQ_STACK_START
-	.endm
-
-/*
- * exception handlers
- */
-	.align  5
-undefined_instruction:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_undefined_instruction
-
-	.align	5
-software_interrupt:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_software_interrupt
-
-	.align	5
-prefetch_abort:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_prefetch_abort
-
-	.align	5
-data_abort:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_data_abort
-
-	.align	5
-not_used:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_not_used
-
-#ifdef CONFIG_USE_IRQ
-
-	.align	5
-irq:
-	get_irq_stack
-	irq_save_user_regs
-	bl	do_irq
-	irq_restore_user_regs
-
-	.align	5
-fiq:
-	get_fiq_stack
-	/* someone ought to write a more effiction fiq_save_user_regs */
-	irq_save_user_regs
-	bl	do_fiq
-	irq_restore_user_regs
-
-#else
-
-	.align	5
-irq:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_irq
-
-	.align	5
-fiq:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_fiq
-
-#endif

arch/arm/cpu/arm926ejs/mxs/start.S

@@ -24,70 +24,6 @@
 #include <common.h>
 #include <version.h>
 
-/*
- *************************************************************************
- *
- * Jump vector table as in table 3.1 in [1]
- *
- *************************************************************************
- */
-
-
-.globl _start
-_start:
-	b	reset
-	b	undefined_instruction
-	b	software_interrupt
-	b	prefetch_abort
-	b	data_abort
-	b	not_used
-	b	irq
-	b	fiq
-
-/*
- * Vector table, located at address 0x20.
- * This table allows the code running AFTER SPL, the U-Boot, to install it's
- * interrupt handlers here. The problem is that the U-Boot is loaded into RAM,
- * including it's interrupt vectoring table and the table at 0x0 is still the
- * SPLs. So if interrupt happens in U-Boot, the SPLs interrupt vectoring table
- * is still used.
- */
-_vt_reset:
-	.word	_reset
-_vt_undefined_instruction:
-	.word	_hang
-_vt_software_interrupt:
-	.word	_hang
-_vt_prefetch_abort:
-	.word	_hang
-_vt_data_abort:
-	.word	_hang
-_vt_not_used:
-	.word	_reset
-_vt_irq:
-	.word	_hang
-_vt_fiq:
-	.word	_hang
-
-reset:
-	ldr	pc, _vt_reset
-undefined_instruction:
-	ldr	pc, _vt_undefined_instruction
-software_interrupt:
-	ldr	pc, _vt_software_interrupt
-prefetch_abort:
-	ldr	pc, _vt_prefetch_abort
-data_abort:
-	ldr	pc, _vt_data_abort
-not_used:
-	ldr	pc, _vt_not_used
-irq:
-	ldr	pc, _vt_irq
-fiq:
-	ldr	pc, _vt_fiq
-
-	.balignl 16,0xdeadbeef
-
 /*
  *************************************************************************
  *
@@ -101,28 +37,8 @@ fiq:
  *************************************************************************
  */
 
-#ifdef CONFIG_USE_IRQ
+	.globl	reset
-/* IRQ stack memory (calculated at run-time) */
+reset:
-.globl IRQ_STACK_START
-IRQ_STACK_START:
-	.word	0x0badc0de
-
-/* IRQ stack memory (calculated at run-time) */
-.globl FIQ_STACK_START
-FIQ_STACK_START:
-	.word 0x0badc0de
-#endif
-
-/* IRQ stack memory (calculated at run-time) + 8 bytes */
-.globl IRQ_STACK_START_IN
-IRQ_STACK_START_IN:
-	.word	0x0badc0de
-
-/*
- * the actual reset code
- */
-
-_reset:
 	/*
 	 * If the CPU is configured in "Wait JTAG connection mode", the stack
 	 * pointer is not configured and is zero. This will cause crash when
@@ -179,7 +95,3 @@ _reset:
 	mov r0, #0
 
 	bx	lr
-
-_hang:
-1:
-	bl	1b				/* hang and never return */

arch/arm/cpu/arm926ejs/spear/start.S

@@ -17,29 +17,6 @@
 
 #include <config.h>
 
-.globl _start
-_start:
-	b	reset
-	ldr	pc, _undefined_instruction
-	ldr	pc, _software_interrupt
-	ldr	pc, _prefetch_abort
-	ldr	pc, _data_abort
-	ldr	pc, _not_used
-	ldr	pc, _irq
-	ldr	pc, _fiq
-
-_undefined_instruction:
-_software_interrupt:
-_prefetch_abort:
-_data_abort:
-_not_used:
-_irq:
-_fiq:
-	.word infinite_loop
-
-infinite_loop:
-	b	infinite_loop
-
 /*
  *************************************************************************
  *
@@ -53,9 +30,7 @@ infinite_loop:
  *************************************************************************
  */
 
-/*
+	.globl	reset
- * the actual reset code
- */
 
 reset:
 /*

arch/arm/cpu/arm926ejs/spear/u-boot-spl.lds

@@ -21,6 +21,7 @@ SECTIONS
 	. = ALIGN(4);
 	.text	:
 	{
+		*(.vectors)
 		arch/arm/cpu/arm926ejs/spear/start.o	(.text*)
 		*(.text*)
 	}

arch/arm/cpu/arm926ejs/start.S

@@ -20,75 +20,6 @@
 #include <common.h>
 #include <version.h>
 
-/*
- *************************************************************************
- *
- * Jump vector table as in table 3.1 in [1]
- *
- *************************************************************************
- */
-
-
-#ifdef CONFIG_SYS_DV_NOR_BOOT_CFG
-.globl _start
-_start:
-.globl _NOR_BOOT_CFG
-_NOR_BOOT_CFG:
-	.word	CONFIG_SYS_DV_NOR_BOOT_CFG
-	b	reset
-#else
-.globl _start
-_start:
-	b	reset
-#endif
-#ifdef CONFIG_SPL_BUILD
-/* No exception handlers in preloader */
-	ldr	pc, _hang
-	ldr	pc, _hang
-	ldr	pc, _hang
-	ldr	pc, _hang
-	ldr	pc, _hang
-	ldr	pc, _hang
-	ldr	pc, _hang
-
-_hang:
-	.word	do_hang
-/* pad to 64 byte boundary */
-	.word	0x12345678
-	.word	0x12345678
-	.word	0x12345678
-	.word	0x12345678
-	.word	0x12345678
-	.word	0x12345678
-	.word	0x12345678
-#else
-	ldr	pc, _undefined_instruction
-	ldr	pc, _software_interrupt
-	ldr	pc, _prefetch_abort
-	ldr	pc, _data_abort
-	ldr	pc, _not_used
-	ldr	pc, _irq
-	ldr	pc, _fiq
-
-_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
-
-#endif	/* CONFIG_SPL_BUILD */
-	.balignl 16,0xdeadbeef
-
-
 /*
  *************************************************************************
  *
@@ -102,26 +33,7 @@ _fiq:
  *************************************************************************
  */
 
-#ifdef CONFIG_USE_IRQ
+	.globl	reset
-/* IRQ stack memory (calculated at run-time) */
-.globl IRQ_STACK_START
-IRQ_STACK_START:
-	.word	0x0badc0de
-
-/* IRQ stack memory (calculated at run-time) */
-.globl FIQ_STACK_START
-FIQ_STACK_START:
-	.word 0x0badc0de
-#endif
-
-/* IRQ stack memory (calculated at run-time) + 8 bytes */
-.globl IRQ_STACK_START_IN
-IRQ_STACK_START_IN:
-	.word	0x0badc0de
-
-/*
- * the actual reset code
- */
 
 reset:
 	/*
@@ -198,175 +110,3 @@ flush_dcache:
 	mov	lr, ip		/* restore link */
 	mov	pc, lr		/* back to my caller */
 #endif /* CONFIG_SKIP_LOWLEVEL_INIT */
-
-#ifndef CONFIG_SPL_BUILD
-/*
- *************************************************************************
- *
- * Interrupt handling
- *
- *************************************************************************
- */
-
-@
-@ IRQ stack frame.
-@
-#define S_FRAME_SIZE	72
-
-#define S_OLD_R0	68
-#define S_PSR		64
-#define S_PC		60
-#define S_LR		56
-#define S_SP		52
-
-#define S_IP		48
-#define S_FP		44
-#define S_R10		40
-#define S_R9		36
-#define S_R8		32
-#define S_R7		28
-#define S_R6		24
-#define S_R5		20
-#define S_R4		16
-#define S_R3		12
-#define S_R2		8
-#define S_R1		4
-#define S_R0		0
-
-#define MODE_SVC 0x13
-#define I_BIT	 0x80
-
-/*
- * use bad_save_user_regs for abort/prefetch/undef/swi ...
- * use irq_save_user_regs / irq_restore_user_regs for IRQ/FIQ handling
- */
-
-	.macro	bad_save_user_regs
-	@ carve out a frame on current user stack
-	sub	sp, sp, #S_FRAME_SIZE
-	stmia	sp, {r0 - r12}	@ Save user registers (now in svc mode) r0-r12
-	ldr	r2, IRQ_STACK_START_IN
-	@ get values for "aborted" pc and cpsr (into parm regs)
-	ldmia	r2, {r2 - r3}
-	add	r0, sp, #S_FRAME_SIZE		@ grab pointer to old stack
-	add	r5, sp, #S_SP
-	mov	r1, lr
-	stmia	r5, {r0 - r3}	@ save sp_SVC, lr_SVC, pc, cpsr
-	mov	r0, sp		@ save current stack into r0 (param register)
-	.endm
-
-	.macro	irq_save_user_regs
-	sub	sp, sp, #S_FRAME_SIZE
-	stmia	sp, {r0 - r12}			@ Calling r0-r12
-	@ !!!! R8 NEEDS to be saved !!!! a reserved stack spot would be good.
-	add	r8, sp, #S_PC
-	stmdb	r8, {sp, lr}^		@ Calling SP, LR
-	str	lr, [r8, #0]		@ Save calling PC
-	mrs	r6, spsr
-	str	r6, [r8, #4]		@ Save CPSR
-	str	r0, [r8, #8]		@ Save OLD_R0
-	mov	r0, sp
-	.endm
-
-	.macro	irq_restore_user_regs
-	ldmia	sp, {r0 - lr}^			@ Calling r0 - lr
-	mov	r0, r0
-	ldr	lr, [sp, #S_PC]			@ Get PC
-	add	sp, sp, #S_FRAME_SIZE
-	subs	pc, lr, #4		@ return & move spsr_svc into cpsr
-	.endm
-
-	.macro get_bad_stack
-	ldr	r13, IRQ_STACK_START_IN		@ setup our mode stack
-
-	str	lr, [r13]	@ save caller lr in position 0 of saved stack
-	mrs	lr, spsr	@ get the spsr
-	str	lr, [r13, #4]	@ save spsr in position 1 of saved stack
-	mov	r13, #MODE_SVC	@ prepare SVC-Mode
-	@ msr	spsr_c, r13
-	msr	spsr, r13	@ switch modes, make sure moves will execute
-	mov	lr, pc		@ capture return pc
-	movs	pc, lr		@ jump to next instruction & switch modes.
-	.endm
-
-	.macro get_irq_stack			@ setup IRQ stack
-	ldr	sp, IRQ_STACK_START
-	.endm
-
-	.macro get_fiq_stack			@ setup FIQ stack
-	ldr	sp, FIQ_STACK_START
-	.endm
-#endif	/* CONFIG_SPL_BUILD */
-
-/*
- * exception handlers
- */
-#ifdef CONFIG_SPL_BUILD
-	.align	5
-do_hang:
-1:
-	bl	1b				/* hang and never return */
-#else	/* !CONFIG_SPL_BUILD */
-	.align  5
-undefined_instruction:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_undefined_instruction
-
-	.align	5
-software_interrupt:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_software_interrupt
-
-	.align	5
-prefetch_abort:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_prefetch_abort
-
-	.align	5
-data_abort:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_data_abort
-
-	.align	5
-not_used:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_not_used
-
-#ifdef CONFIG_USE_IRQ
-
-	.align	5
-irq:
-	get_irq_stack
-	irq_save_user_regs
-	bl	do_irq
-	irq_restore_user_regs
-
-	.align	5
-fiq:
-	get_fiq_stack
-	/* someone ought to write a more effiction fiq_save_user_regs */
-	irq_save_user_regs
-	bl	do_fiq
-	irq_restore_user_regs
-
-#else
-
-	.align	5
-irq:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_irq
-
-	.align	5
-fiq:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_fiq
-
-#endif
-#endif	/* CONFIG_SPL_BUILD */

arch/arm/cpu/arm946es/start.S

@@ -19,43 +19,6 @@
 #include <config.h>
 #include <version.h>
 
-/*
- *************************************************************************
- *
- * Jump vector table as in table 3.1 in [1]
- *
- *************************************************************************
- */
-
-
-.globl _start
-_start:
-	b	reset
-	ldr	pc, _undefined_instruction
-	ldr	pc, _software_interrupt
-	ldr	pc, _prefetch_abort
-	ldr	pc, _data_abort
-	ldr	pc, _not_used
-	ldr	pc, _irq
-	ldr	pc, _fiq
-
-_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
-
-	.balignl 16,0xdeadbeef
-
 /*
  *************************************************************************
  *
@@ -69,26 +32,7 @@ _fiq:
  *************************************************************************
  */
 
-#ifdef CONFIG_USE_IRQ
+	.globl	reset
-/* IRQ stack memory (calculated at run-time) */
-.globl IRQ_STACK_START
-IRQ_STACK_START:
-	.word	0x0badc0de
-
-/* IRQ stack memory (calculated at run-time) */
-.globl FIQ_STACK_START
-FIQ_STACK_START:
-	.word 0x0badc0de
-#endif
-
-/* IRQ stack memory (calculated at run-time) + 8 bytes */
-.globl IRQ_STACK_START_IN
-IRQ_STACK_START_IN:
-	.word	0x0badc0de
-
-/*
- * the actual reset code
- */
 
 reset:
 	/*
@@ -155,166 +99,3 @@ cpu_init_crit:
 	mov	lr, ip		/* restore link */
 	mov	pc, lr		/* back to my caller */
 #endif
-/*
- *************************************************************************
- *
- * Interrupt handling
- *
- *************************************************************************
- */
-
-@
-@ IRQ stack frame.
-@
-#define S_FRAME_SIZE	72
-
-#define S_OLD_R0	68
-#define S_PSR		64
-#define S_PC		60
-#define S_LR		56
-#define S_SP		52
-
-#define S_IP		48
-#define S_FP		44
-#define S_R10		40
-#define S_R9		36
-#define S_R8		32
-#define S_R7		28
-#define S_R6		24
-#define S_R5		20
-#define S_R4		16
-#define S_R3		12
-#define S_R2		8
-#define S_R1		4
-#define S_R0		0
-
-#define MODE_SVC 0x13
-#define I_BIT	 0x80
-
-/*
- * use bad_save_user_regs for abort/prefetch/undef/swi ...
- * use irq_save_user_regs / irq_restore_user_regs for IRQ/FIQ handling
- */
-
-	.macro	bad_save_user_regs
-	@ carve out a frame on current user stack
-	sub	sp, sp, #S_FRAME_SIZE
-	stmia	sp, {r0 - r12}	@ Save user registers (now in svc mode) r0-r12
-
-	ldr	r2, IRQ_STACK_START_IN
-	@ get values for "aborted" pc and cpsr (into parm regs)
-	ldmia	r2, {r2 - r3}
-	add	r0, sp, #S_FRAME_SIZE		@ grab pointer to old stack
-	add	r5, sp, #S_SP
-	mov	r1, lr
-	stmia	r5, {r0 - r3}	@ save sp_SVC, lr_SVC, pc, cpsr
-	mov	r0, sp		@ save current stack into r0 (param register)
-	.endm
-
-	.macro	irq_save_user_regs
-	sub	sp, sp, #S_FRAME_SIZE
-	stmia	sp, {r0 - r12}			@ Calling r0-r12
-	@ !!!! R8 NEEDS to be saved !!!! a reserved stack spot would be good.
-	add	r8, sp, #S_PC
-	stmdb	r8, {sp, lr}^		@ Calling SP, LR
-	str	lr, [r8, #0]		@ Save calling PC
-	mrs	r6, spsr
-	str	r6, [r8, #4]		@ Save CPSR
-	str	r0, [r8, #8]		@ Save OLD_R0
-	mov	r0, sp
-	.endm
-
-	.macro	irq_restore_user_regs
-	ldmia	sp, {r0 - lr}^			@ Calling r0 - lr
-	mov	r0, r0
-	ldr	lr, [sp, #S_PC]			@ Get PC
-	add	sp, sp, #S_FRAME_SIZE
-	subs	pc, lr, #4		@ return & move spsr_svc into cpsr
-	.endm
-
-	.macro get_bad_stack
-	ldr	r13, IRQ_STACK_START_IN		@ setup our mode stack
-
-	str	lr, [r13]	@ save caller lr in position 0 of saved stack
-	mrs	lr, spsr	@ get the spsr
-	str	lr, [r13, #4]	@ save spsr in position 1 of saved stack
-	mov	r13, #MODE_SVC	@ prepare SVC-Mode
-	@ msr	spsr_c, r13
-	msr	spsr, r13	@ switch modes, make sure moves will execute
-	mov	lr, pc		@ capture return pc
-	movs	pc, lr		@ jump to next instruction & switch modes.
-	.endm
-
-	.macro get_irq_stack			@ setup IRQ stack
-	ldr	sp, IRQ_STACK_START
-	.endm
-
-	.macro get_fiq_stack			@ setup FIQ stack
-	ldr	sp, FIQ_STACK_START
-	.endm
-
-/*
- * exception handlers
- */
-	.align  5
-undefined_instruction:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_undefined_instruction
-
-	.align	5
-software_interrupt:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_software_interrupt
-
-	.align	5
-prefetch_abort:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_prefetch_abort
-
-	.align	5
-data_abort:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_data_abort
-
-	.align	5
-not_used:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_not_used
-
-#ifdef CONFIG_USE_IRQ
-
-	.align	5
-irq:
-	get_irq_stack
-	irq_save_user_regs
-	bl	do_irq
-	irq_restore_user_regs
-
-	.align	5
-fiq:
-	get_fiq_stack
-	/* someone ought to write a more effiction fiq_save_user_regs */
-	irq_save_user_regs
-	bl	do_fiq
-	irq_restore_user_regs
-
-#else
-
-	.align	5
-irq:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_irq
-
-	.align	5
-fiq:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_fiq
-
-#endif

arch/arm/cpu/arm_intcm/start.S

@@ -18,42 +18,6 @@
 #include <config.h>
 #include <version.h>
 
-/*
- *************************************************************************
- *
- * Jump vector table
- *
- *************************************************************************
- */
-
-.globl _start
-_start:
-	b	reset
-	ldr	pc, _undefined_instruction
-	ldr	pc, _software_interrupt
-	ldr	pc, _prefetch_abort
-	ldr	pc, _data_abort
-	ldr	pc, _not_used
-	ldr	pc, _irq
-	ldr	pc, _fiq
-
-_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
-
-	.balignl 16,0xdeadbeef
-
 /*
  *************************************************************************
  *
@@ -67,26 +31,7 @@ _fiq:
  *************************************************************************
  */
 
-#ifdef CONFIG_USE_IRQ
+	.globl	reset
-/* IRQ stack memory (calculated at run-time) */
-.globl IRQ_STACK_START
-IRQ_STACK_START:
-	.word	0x0badc0de
-
-/* IRQ stack memory (calculated at run-time) */
-.globl FIQ_STACK_START
-FIQ_STACK_START:
-	.word 0x0badc0de
-#endif
-
-/* IRQ stack memory (calculated at run-time) + 8 bytes */
-.globl IRQ_STACK_START_IN
-IRQ_STACK_START_IN:
-	.word	0x0badc0de
-
-/*
- * the actual reset code
- */
 
 reset:
 	/*
@@ -132,174 +77,3 @@ cpu_init_crit:
 	 */
 	mov	pc, lr		/* back to my caller */
 #endif
-/*
- *************************************************************************
- *
- * Interrupt handling
- *
- *************************************************************************
- */
-
-@
-@ IRQ stack frame.
-@
-#define S_FRAME_SIZE	72
-
-#define S_OLD_R0	68
-#define S_PSR		64
-#define S_PC		60
-#define S_LR		56
-#define S_SP		52
-
-#define S_IP		48
-#define S_FP		44
-#define S_R10		40
-#define S_R9		36
-#define S_R8		32
-#define S_R7		28
-#define S_R6		24
-#define S_R5		20
-#define S_R4		16
-#define S_R3		12
-#define S_R2		8
-#define S_R1		4
-#define S_R0		0
-
-#define MODE_SVC 0x13
-#define I_BIT	 0x80
-
-/*
- * use bad_save_user_regs for abort/prefetch/undef/swi ...
- * use irq_save_user_regs / irq_restore_user_regs for IRQ/FIQ handling
- */
-
-	.macro	bad_save_user_regs
-	@ carve out a frame on current user stack
-	sub	sp, sp, #S_FRAME_SIZE
-	stmia	sp, {r0 - r12}	@ Save user registers (now in svc mode) r0-r12
-
-	ldr	r2, IRQ_STACK_START_IN
-	@ get values for "aborted" pc and cpsr (into parm regs)
-	ldmia	r2, {r2 - r3}
-	add	r0, sp, #S_FRAME_SIZE		@ grab pointer to old stack
-	add	r5, sp, #S_SP
-	mov	r1, lr
-	stmia	r5, {r0 - r3}	@ save sp_SVC, lr_SVC, pc, cpsr
-	mov	r0, sp		@ save current stack into r0 (param register)
-	.endm
-
-	.macro	irq_save_user_regs
-	sub	sp, sp, #S_FRAME_SIZE
-	stmia	sp, {r0 - r12}			@ Calling r0-r12
-	@ !!!! R8 NEEDS to be saved !!!! a reserved stack spot would be good.
-	add	r8, sp, #S_PC
-	stmdb	r8, {sp, lr}^		@ Calling SP, LR
-	str	lr, [r8, #0]		@ Save calling PC
-	mrs	r6, spsr
-	str	r6, [r8, #4]		@ Save CPSR
-	str	r0, [r8, #8]		@ Save OLD_R0
-	mov	r0, sp
-	.endm
-
-	.macro	irq_restore_user_regs
-	ldmia	sp, {r0 - lr}^			@ Calling r0 - lr
-	mov	r0, r0
-	ldr	lr, [sp, #S_PC]			@ Get PC
-	add	sp, sp, #S_FRAME_SIZE
-	subs	pc, lr, #4		@ return & move spsr_svc into cpsr
-	.endm
-
-	.macro get_bad_stack
-	ldr	r13, IRQ_STACK_START_IN		@ setup our mode stack
-
-	str	lr, [r13]	@ save caller lr in position 0 of saved stack
-	mrs	lr, spsr	@ get the spsr
-	str	lr, [r13, #4]	@ save spsr in position 1 of saved stack
-	mov	r13, #MODE_SVC	@ prepare SVC-Mode
-	@ msr	spsr_c, r13
-	msr	spsr, r13	@ switch modes, make sure moves will execute
-	mov	lr, pc		@ capture return pc
-	movs	pc, lr		@ jump to next instruction & switch modes.
-	.endm
-
-	.macro get_irq_stack			@ setup IRQ stack
-	ldr	sp, IRQ_STACK_START
-	.endm
-
-	.macro get_fiq_stack			@ setup FIQ stack
-	ldr	sp, FIQ_STACK_START
-	.endm
-
-/*
- * exception handlers
- */
-	.align  5
-.globl undefined_instruction
-undefined_instruction:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_undefined_instruction
-
-	.align	5
-.globl software_interrupt
-software_interrupt:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_software_interrupt
-
-	.align	5
-.globl prefetch_abort
-prefetch_abort:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_prefetch_abort
-
-	.align	5
-.globl data_abort
-data_abort:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_data_abort
-
-	.align	5
-.globl not_used
-not_used:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_not_used
-
-#ifdef CONFIG_USE_IRQ
-	.align	5
-.globl irq
-irq:
-	get_irq_stack
-	irq_save_user_regs
-	bl	do_irq
-	irq_restore_user_regs
-
-	.align	5
-.globl fiq
-fiq:
-	get_fiq_stack
-	/* someone ought to write a more effiction fiq_save_user_regs */
-	irq_save_user_regs
-	bl	do_fiq
-	irq_restore_user_regs
-
-#else
-
-	.align	5
-.globl irq
-irq:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_irq
-
-	.align	5
-.globl fiq
-fiq:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_fiq
-
-#endif

arch/arm/cpu/armv7/socfpga/lowlevel_init.S

@@ -10,20 +10,7 @@
 /* Save the parameter pass in by previous boot loader */
 .global save_boot_params
 save_boot_params:
-	/* save the parameter here */
+	/* no parameter to save */
-
-	/*
-	 * Setup stack for exception, which is located
-	 * at the end of on-chip RAM. We don't expect exception prior to
-	 * relocation and if that happens, we won't worry -- it will overide
-	 * global data region as the code will goto reset. After relocation,
-	 * this region won't be used by other part of program.
-	 * Hence it is safe.
-	 */
-	ldr	r0, =(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_SIZE)
-	ldr	r1, =IRQ_STACK_START_IN
-	str	r0, [r1]
-
 	bx	lr
 
 

arch/arm/cpu/armv7/start.S

@@ -19,43 +19,6 @@
 #include <asm/system.h>
 #include <linux/linkage.h>
 
-.globl _start
-_start: b	reset
-	ldr	pc, _undefined_instruction
-	ldr	pc, _software_interrupt
-	ldr	pc, _prefetch_abort
-	ldr	pc, _data_abort
-	ldr	pc, _not_used
-	ldr	pc, _irq
-	ldr	pc, _fiq
-#ifdef CONFIG_SPL_BUILD
-_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
-.globl _undefined_instruction
-_undefined_instruction: .word undefined_instruction
-.globl _software_interrupt
-_software_interrupt:	.word software_interrupt
-.globl _prefetch_abort
-_prefetch_abort:	.word prefetch_abort
-.globl _data_abort
-_data_abort:		.word data_abort
-.globl _not_used
-_not_used:		.word not_used
-.globl _irq
-_irq:			.word irq
-.globl _fiq
-_fiq:			.word fiq
-_pad:			.word 0x12345678 /* now 16*4=64 */
-#endif	/* CONFIG_SPL_BUILD */
-
-	.balignl 16,0xdeadbeef
 /*************************************************************************
  *
  * Startup Code (reset vector)
@@ -67,26 +30,7 @@ _pad:			.word 0x12345678 /* now 16*4=64 */
  *
  *************************************************************************/
 
-#ifdef CONFIG_USE_IRQ
+	.globl	reset
-/* IRQ stack memory (calculated at run-time) */
-.globl IRQ_STACK_START
-IRQ_STACK_START:
-	.word	0x0badc0de
-
-/* IRQ stack memory (calculated at run-time) */
-.globl FIQ_STACK_START
-FIQ_STACK_START:
-	.word 0x0badc0de
-#endif
-
-/* IRQ stack memory (calculated at run-time) + 8 bytes */
-.globl IRQ_STACK_START_IN
-IRQ_STACK_START_IN:
-	.word	0x0badc0de
-
-/*
- * the actual reset code
- */
 
 reset:
 	bl	save_boot_params
@@ -247,195 +191,3 @@ ENTRY(cpu_init_crit)
 	b	lowlevel_init		@ go setup pll,mux,memory
 ENDPROC(cpu_init_crit)
 #endif
-
-#ifndef CONFIG_SPL_BUILD
-/*
- *************************************************************************
- *
- * Interrupt handling
- *
- *************************************************************************
- */
-@
-@ IRQ stack frame.
-@
-#define S_FRAME_SIZE	72
-
-#define S_OLD_R0	68
-#define S_PSR		64
-#define S_PC		60
-#define S_LR		56
-#define S_SP		52
-
-#define S_IP		48
-#define S_FP		44
-#define S_R10		40
-#define S_R9		36
-#define S_R8		32
-#define S_R7		28
-#define S_R6		24
-#define S_R5		20
-#define S_R4		16
-#define S_R3		12
-#define S_R2		8
-#define S_R1		4
-#define S_R0		0
-
-#define MODE_SVC 0x13
-#define I_BIT	 0x80
-
-/*
- * use bad_save_user_regs for abort/prefetch/undef/swi ...
- * use irq_save_user_regs / irq_restore_user_regs for IRQ/FIQ handling
- */
-
-	.macro	bad_save_user_regs
-	sub	sp, sp, #S_FRAME_SIZE		@ carve out a frame on current
-						@ user stack
-	stmia	sp, {r0 - r12}			@ Save user registers (now in
-						@ svc mode) r0-r12
-	ldr	r2, IRQ_STACK_START_IN		@ set base 2 words into abort
-						@ stack
-	ldmia	r2, {r2 - r3}			@ get values for "aborted" pc
-						@ and cpsr (into parm regs)
-	add	r0, sp, #S_FRAME_SIZE		@ grab pointer to old stack
-
-	add	r5, sp, #S_SP
-	mov	r1, lr
-	stmia	r5, {r0 - r3}			@ save sp_SVC, lr_SVC, pc, cpsr
-	mov	r0, sp				@ save current stack into r0
-						@ (param register)
-	.endm
-
-	.macro	irq_save_user_regs
-	sub	sp, sp, #S_FRAME_SIZE
-	stmia	sp, {r0 - r12}			@ Calling r0-r12
-	add	r8, sp, #S_PC			@ !! R8 NEEDS to be saved !!
-						@ a reserved stack spot would
-						@ be good.
-	stmdb	r8, {sp, lr}^			@ Calling SP, LR
-	str	lr, [r8, #0]			@ Save calling PC
-	mrs	r6, spsr
-	str	r6, [r8, #4]			@ Save CPSR
-	str	r0, [r8, #8]			@ Save OLD_R0
-	mov	r0, sp
-	.endm
-
-	.macro	irq_restore_user_regs
-	ldmia	sp, {r0 - lr}^			@ Calling r0 - lr
-	mov	r0, r0
-	ldr	lr, [sp, #S_PC]			@ Get PC
-	add	sp, sp, #S_FRAME_SIZE
-	subs	pc, lr, #4			@ return & move spsr_svc into
-						@ cpsr
-	.endm
-
-	.macro get_bad_stack
-	ldr	r13, IRQ_STACK_START_IN		@ setup our mode stack (enter
-						@ in banked mode)
-
-	str	lr, [r13]			@ save caller lr in position 0
-						@ of saved stack
-	mrs	lr, spsr			@ get the spsr
-	str	lr, [r13, #4]			@ save spsr in position 1 of
-						@ saved stack
-
-	mov	r13, #MODE_SVC			@ prepare SVC-Mode
-	@ msr	spsr_c, r13
-	msr	spsr, r13			@ switch modes, make sure
-						@ moves will execute
-	mov	lr, pc				@ capture return pc
-	movs	pc, lr				@ jump to next instruction &
-						@ switch modes.
-	.endm
-
-	.macro get_bad_stack_swi
-	sub	r13, r13, #4			@ space on current stack for
-						@ scratch reg.
-	str	r0, [r13]			@ save R0's value.
-	ldr	r0, IRQ_STACK_START_IN		@ get data regions start
-						@ spots for abort stack
-	str	lr, [r0]			@ save caller lr in position 0
-						@ of saved stack
-	mrs	lr, spsr			@ get the spsr
-	str	lr, [r0, #4]			@ save spsr in position 1 of
-						@ saved stack
-	ldr	lr, [r0]			@ restore lr
-	ldr	r0, [r13]			@ restore r0
-	add	r13, r13, #4			@ pop stack entry
-	.endm
-
-	.macro get_irq_stack			@ setup IRQ stack
-	ldr	sp, IRQ_STACK_START
-	.endm
-
-	.macro get_fiq_stack			@ setup FIQ stack
-	ldr	sp, FIQ_STACK_START
-	.endm
-
-/*
- * exception handlers
- */
-	.align	5
-undefined_instruction:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_undefined_instruction
-
-	.align	5
-software_interrupt:
-	get_bad_stack_swi
-	bad_save_user_regs
-	bl	do_software_interrupt
-
-	.align	5
-prefetch_abort:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_prefetch_abort
-
-	.align	5
-data_abort:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_data_abort
-
-	.align	5
-not_used:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_not_used
-
-#ifdef CONFIG_USE_IRQ
-
-	.align	5
-irq:
-	get_irq_stack
-	irq_save_user_regs
-	bl	do_irq
-	irq_restore_user_regs
-
-	.align	5
-fiq:
-	get_fiq_stack
-	/* someone ought to write a more effective fiq_save_user_regs */
-	irq_save_user_regs
-	bl	do_fiq
-	irq_restore_user_regs
-
-#else
-
-	.align	5
-irq:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_irq
-
-	.align	5
-fiq:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_fiq
-
-#endif /* CONFIG_USE_IRQ */
-#endif /* CONFIG_SPL_BUILD */

arch/arm/cpu/armv7/zynq/u-boot.lds

@@ -88,7 +88,7 @@ SECTIONS
 	}
 
 	/*
-	 * Zynq needs to discard more sections because the user
+	 * Zynq needs to discard these sections because the user
 	 * is expected to pass this image on to tools for boot.bin
 	 * generation that require them to be dropped.
 	 */

arch/arm/cpu/pxa/start.S

@@ -23,46 +23,6 @@
 #include <config.h>
 #include <version.h>
 
-.globl _start
-_start: b	reset
-#ifdef CONFIG_SPL_BUILD
-	ldr	pc, _hang
-	ldr	pc, _hang
-	ldr	pc, _hang
-	ldr	pc, _hang
-	ldr	pc, _hang
-	ldr	pc, _hang
-	ldr	pc, _hang
-
-_hang:
-	.word	do_hang
-	.word	0x12345678
-	.word	0x12345678
-	.word	0x12345678
-	.word	0x12345678
-	.word	0x12345678
-	.word	0x12345678
-	.word	0x12345678	/* now 16*4=64 */
-#else
-	ldr	pc, _undefined_instruction
-	ldr	pc, _software_interrupt
-	ldr	pc, _prefetch_abort
-	ldr	pc, _data_abort
-	ldr	pc, _not_used
-	ldr	pc, _irq
-	ldr	pc, _fiq
-
-_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 */
-#endif	/* CONFIG_SPL_BUILD */
-
-	.balignl 16,0xdeadbeef
 /*
  *************************************************************************
  *
@@ -76,26 +36,7 @@ _pad:			.word 0x12345678 /* now 16*4=64 */
  *************************************************************************
  */
 
-#ifdef CONFIG_USE_IRQ
+	.globl	reset
-/* IRQ stack memory (calculated at run-time) */
-.globl IRQ_STACK_START
-IRQ_STACK_START:
-	.word	0x0badc0de
-
-/* IRQ stack memory (calculated at run-time) */
-.globl FIQ_STACK_START
-FIQ_STACK_START:
-	.word 0x0badc0de
-#endif
-
-/* IRQ stack memory (calculated at run-time) + 8 bytes */
-.globl IRQ_STACK_START_IN
-IRQ_STACK_START_IN:
-	.word	0x0badc0de
-
-/*
- * the actual reset code
- */
 
 reset:
 	/*
@@ -166,190 +107,6 @@ cpu_init_crit:
 	mov	pc, lr		/* back to my caller */
 #endif /* !CONFIG_SKIP_LOWLEVEL_INIT || CONFIG_CPU_PXA25X */
 
-#ifndef CONFIG_SPL_BUILD
-/*
- *************************************************************************
- *
- * Interrupt handling
- *
- *************************************************************************
- */
-@
-@ IRQ stack frame.
-@
-#define S_FRAME_SIZE	72
-
-#define S_OLD_R0	68
-#define S_PSR		64
-#define S_PC		60
-#define S_LR		56
-#define S_SP		52
-
-#define S_IP		48
-#define S_FP		44
-#define S_R10		40
-#define S_R9		36
-#define S_R8		32
-#define S_R7		28
-#define S_R6		24
-#define S_R5		20
-#define S_R4		16
-#define S_R3		12
-#define S_R2		8
-#define S_R1		4
-#define S_R0		0
-
-#define MODE_SVC 0x13
-#define I_BIT	 0x80
-
-/*
- * use bad_save_user_regs for abort/prefetch/undef/swi ...
- * use irq_save_user_regs / irq_restore_user_regs for IRQ/FIQ handling
- */
-
-	.macro	bad_save_user_regs
-	sub	sp, sp, #S_FRAME_SIZE		@ carve out a frame on current user stack
-	stmia	sp, {r0 - r12}			@ Save user registers (now in svc mode) r0-r12
-
-	ldr	r2, IRQ_STACK_START_IN		@ set base 2 words into abort stack
-	ldmia	r2, {r2 - r3}			@ get values for "aborted" pc and cpsr (into parm regs)
-	add	r0, sp, #S_FRAME_SIZE		@ grab pointer to old stack
-
-	add	r5, sp, #S_SP
-	mov	r1, lr
-	stmia	r5, {r0 - r3}			@ save sp_SVC, lr_SVC, pc, cpsr
-	mov	r0, sp				@ save current stack into r0 (param register)
-	.endm
-
-	.macro	irq_save_user_regs
-	sub	sp, sp, #S_FRAME_SIZE
-	stmia	sp, {r0 - r12}			@ Calling r0-r12
-	add	r8, sp, #S_PC			@ !!!! R8 NEEDS to be saved !!!! a reserved stack spot would be good.
-	stmdb	r8, {sp, lr}^			@ Calling SP, LR
-	str	lr, [r8, #0]			@ Save calling PC
-	mrs	r6, spsr
-	str	r6, [r8, #4]			@ Save CPSR
-	str	r0, [r8, #8]			@ Save OLD_R0
-	mov	r0, sp
-	.endm
-
-	.macro	irq_restore_user_regs
-	ldmia	sp, {r0 - lr}^			@ Calling r0 - lr
-	mov	r0, r0
-	ldr	lr, [sp, #S_PC]			@ Get PC
-	add	sp, sp, #S_FRAME_SIZE
-	subs	pc, lr, #4			@ return & move spsr_svc into cpsr
-	.endm
-
-	.macro get_bad_stack
-	ldr	r13, IRQ_STACK_START_IN		@ setup our mode stack (enter in banked mode)
-
-	str	lr, [r13]			@ save caller lr in position 0 of saved stack
-	mrs	lr, spsr			@ get the spsr
-	str	lr, [r13, #4]			@ save spsr in position 1 of saved stack
-
-	mov	r13, #MODE_SVC			@ prepare SVC-Mode
-	@ msr	spsr_c, r13
-	msr	spsr, r13			@ switch modes, make sure moves will execute
-	mov	lr, pc				@ capture return pc
-	movs	pc, lr				@ jump to next instruction & switch modes.
-	.endm
-
-	.macro get_bad_stack_swi
-	sub	r13, r13, #4			@ space on current stack for scratch reg.
-	str	r0, [r13]			@ save R0's value.
-	ldr	r0, IRQ_STACK_START_IN		@ get data regions start
-	str	lr, [r0]			@ save caller lr in position 0 of saved stack
-	mrs	lr, spsr			@ get the spsr
-	str	lr, [r0, #4]			@ save spsr in position 1 of saved stack
-	ldr	lr, [r0]			@ restore lr
-	ldr	r0, [r13]			@ restore r0
-	add	r13, r13, #4			@ pop stack entry
-	.endm
-
-	.macro get_irq_stack			@ setup IRQ stack
-	ldr	sp, IRQ_STACK_START
-	.endm
-
-	.macro get_fiq_stack			@ setup FIQ stack
-	ldr	sp, FIQ_STACK_START
-	.endm
-#endif	/* CONFIG_SPL_BUILD */
-
-/*
- * exception handlers
- */
-#ifdef CONFIG_SPL_BUILD
-	.align	5
-do_hang:
-	bl	hang				/* hang and never return */
-#else	/* !CONFIG_SPL_BUILD */
-	.align	5
-undefined_instruction:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_undefined_instruction
-
-	.align	5
-software_interrupt:
-	get_bad_stack_swi
-	bad_save_user_regs
-	bl	do_software_interrupt
-
-	.align	5
-prefetch_abort:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_prefetch_abort
-
-	.align	5
-data_abort:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_data_abort
-
-	.align	5
-not_used:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_not_used
-
-#ifdef CONFIG_USE_IRQ
-
-	.align	5
-irq:
-	get_irq_stack
-	irq_save_user_regs
-	bl	do_irq
-	irq_restore_user_regs
-
-	.align	5
-fiq:
-	get_fiq_stack
-	/* someone ought to write a more effiction fiq_save_user_regs */
-	irq_save_user_regs
-	bl	do_fiq
-	irq_restore_user_regs
-
-#else
-
-	.align	5
-irq:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_irq
-
-	.align	5
-fiq:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_fiq
-
-#endif
-	.align 5
-#endif	/* CONFIG_SPL_BUILD */
-
-
 /*
  * Enable MMU to use DCache as DRAM.
  *

arch/arm/cpu/sa1100/start.S

@@ -13,36 +13,6 @@
 #include <config.h>
 #include <version.h>
 
-/*
- *************************************************************************
- *
- * Jump vector table as in table 3.1 in [1]
- *
- *************************************************************************
- */
-
-
-.globl _start
-_start:	b       reset
-	ldr	pc, _undefined_instruction
-	ldr	pc, _software_interrupt
-	ldr	pc, _prefetch_abort
-	ldr	pc, _data_abort
-	ldr	pc, _not_used
-	ldr	pc, _irq
-	ldr	pc, _fiq
-
-_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
-
-	.balignl 16,0xdeadbeef
-
-
 /*
  *************************************************************************
  *
@@ -56,26 +26,7 @@ _fiq:			.word fiq
  *************************************************************************
  */
 
-#ifdef CONFIG_USE_IRQ
+	.globl	reset
-/* IRQ stack memory (calculated at run-time) */
-.globl IRQ_STACK_START
-IRQ_STACK_START:
-	.word	0x0badc0de
-
-/* IRQ stack memory (calculated at run-time) */
-.globl FIQ_STACK_START
-FIQ_STACK_START:
-	.word 0x0badc0de
-#endif
-
-/* IRQ stack memory (calculated at run-time) + 8 bytes */
-.globl IRQ_STACK_START_IN
-IRQ_STACK_START_IN:
-	.word	0x0badc0de
-
-/*
- * the actual reset code
- */
 
 reset:
 	/*
@@ -173,167 +124,3 @@ cpu_init_crit:
 	mcr	p15, 0, r0, c8, c7, 0	/* flush v4 TLB */
 
 	mov	pc, lr
-
-
-/*
- *************************************************************************
- *
- * Interrupt handling
- *
- *************************************************************************
- */
-
-@
-@ IRQ stack frame.
-@
-#define S_FRAME_SIZE	72
-
-#define S_OLD_R0	68
-#define S_PSR		64
-#define S_PC		60
-#define S_LR		56
-#define S_SP		52
-
-#define S_IP		48
-#define S_FP		44
-#define S_R10		40
-#define S_R9		36
-#define S_R8		32
-#define S_R7		28
-#define S_R6		24
-#define S_R5		20
-#define S_R4		16
-#define S_R3		12
-#define S_R2		8
-#define S_R1		4
-#define S_R0		0
-
-#define MODE_SVC 0x13
-#define I_BIT	 0x80
-
-/*
- * use bad_save_user_regs for abort/prefetch/undef/swi ...
- * use irq_save_user_regs / irq_restore_user_regs for IRQ/FIQ handling
- */
-
-	.macro	bad_save_user_regs
-	sub	sp, sp, #S_FRAME_SIZE
-	stmia	sp, {r0 - r12}			@ Calling r0-r12
-	add     r8, sp, #S_PC
-
-	ldr	r2, IRQ_STACK_START_IN
-	ldmia	r2, {r2 - r4}                   @ get pc, cpsr, old_r0
-	add	r0, sp, #S_FRAME_SIZE		@ restore sp_SVC
-
-	add	r5, sp, #S_SP
-	mov	r1, lr
-	stmia	r5, {r0 - r4}                   @ save sp_SVC, lr_SVC, pc, cpsr, old_r
-	mov	r0, sp
-	.endm
-
-	.macro	irq_save_user_regs
-	sub	sp, sp, #S_FRAME_SIZE
-	stmia	sp, {r0 - r12}			@ Calling r0-r12
-	add     r8, sp, #S_PC
-	stmdb   r8, {sp, lr}^                   @ Calling SP, LR
-	str     lr, [r8, #0]                    @ Save calling PC
-	mrs     r6, spsr
-	str     r6, [r8, #4]                    @ Save CPSR
-	str     r0, [r8, #8]                    @ Save OLD_R0
-	mov	r0, sp
-	.endm
-
-	.macro	irq_restore_user_regs
-	ldmia	sp, {r0 - lr}^			@ Calling r0 - lr
-	mov	r0, r0
-	ldr	lr, [sp, #S_PC]			@ Get PC
-	add	sp, sp, #S_FRAME_SIZE
-	subs	pc, lr, #4			@ return & move spsr_svc into cpsr
-	.endm
-
-	.macro get_bad_stack
-	ldr	r13, IRQ_STACK_START_IN		@ setup our mode stack
-
-	str	lr, [r13]			@ save caller lr / spsr
-	mrs	lr, spsr
-	str     lr, [r13, #4]
-
-	mov	r13, #MODE_SVC			@ prepare SVC-Mode
-	msr	spsr_c, r13
-	mov	lr, pc
-	movs	pc, lr
-	.endm
-
-	.macro get_irq_stack			@ setup IRQ stack
-	ldr	sp, IRQ_STACK_START
-	.endm
-
-	.macro get_fiq_stack			@ setup FIQ stack
-	ldr	sp, FIQ_STACK_START
-	.endm
-
-/*
- * exception handlers
- */
-	.align  5
-undefined_instruction:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_undefined_instruction
-
-	.align	5
-software_interrupt:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_software_interrupt
-
-	.align	5
-prefetch_abort:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_prefetch_abort
-
-	.align	5
-data_abort:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_data_abort
-
-	.align	5
-not_used:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_not_used
-
-#ifdef CONFIG_USE_IRQ
-
-	.align	5
-irq:
-	get_irq_stack
-	irq_save_user_regs
-	bl	do_irq
-	irq_restore_user_regs
-
-	.align	5
-fiq:
-	get_fiq_stack
-	/* someone ought to write a more effiction fiq_save_user_regs */
-	irq_save_user_regs
-	bl	do_fiq
-	irq_restore_user_regs
-
-#else
-
-	.align	5
-irq:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_irq
-
-	.align	5
-fiq:
-	get_bad_stack
-	bad_save_user_regs
-	bl	do_fiq
-
-#endif

arch/arm/cpu/u-boot-spl.lds

@@ -18,6 +18,7 @@ SECTIONS
 	.text :
 	{
 		__image_copy_start = .;
+		*(.vectors)
 		CPUDIR/start.o (.text*)
 		*(.text*)
 	}

arch/arm/cpu/u-boot.lds

@@ -18,6 +18,7 @@ SECTIONS
 	.text :
 	{
 		*(.__image_copy_start)
+		*(.vectors)
 		CPUDIR/start.o (.text*)
 		*(.text*)
 	}

arch/arm/lib/Makefile

@@ -11,7 +11,7 @@ lib-$(CONFIG_USE_PRIVATE_LIBGCC) += _ashldi3.o _ashrdi3.o _divsi3.o \
 ifdef CONFIG_ARM64
 obj-y	+= crt0_64.o
 else
-obj-y	+= crt0.o
+obj-y	+= vectors.o crt0.o
 endif
 
 ifndef CONFIG_SPL_BUILD

arch/arm/lib/vectors.S

@@ -0,0 +1,291 @@
+/*
+ *  vectors - Generic ARM exception table code
+ *
+ *  Copyright (c) 1998	Dan Malek <dmalek@jlc.net>
+ *  Copyright (c) 1999	Magnus Damm <kieraypc01.p.y.kie.era.ericsson.se>
+ *  Copyright (c) 2000	Wolfgang Denk <wd@denx.de>
+ *  Copyright (c) 2001	Alex Züpke <azu@sysgo.de>
+ *  Copyright (c) 2001	Marius Gröger <mag@sysgo.de>
+ *  Copyright (c) 2002	Alex Züpke <azu@sysgo.de>
+ *  Copyright (c) 2002	Gary Jennejohn <garyj@denx.de>
+ *  Copyright (c) 2002	Kyle Harris <kharris@nexus-tech.net>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/*
+ *************************************************************************
+ *
+ * Symbol _start is referenced elsewhere, so make it global
+ *
+ *************************************************************************
+ */
+
+.globl _start
+
+/*
+ *************************************************************************
+ *
+ * Vectors have their own section so linker script can map them easily
+ *
+ *************************************************************************
+ */
+
+	.section ".vectors", "x"
+
+/*
+ *************************************************************************
+ *
+ * Exception vectors as described in ARM reference manuals
+ *
+ * Uses indirect branch to allow reaching handlers anywhere in memory.
+ *
+ *************************************************************************
+ */
+
+_start:
+
+#ifdef CONFIG_SYS_DV_NOR_BOOT_CFG
+	.word	CONFIG_SYS_DV_NOR_BOOT_CFG
+#endif
+
+_start:
+	ldr	pc, _reset
+	ldr	pc, _undefined_instruction
+	ldr	pc, _software_interrupt
+	ldr	pc, _prefetch_abort
+	ldr	pc, _data_abort
+	ldr	pc, _not_used
+	ldr	pc, _irq
+	ldr	pc, _fiq
+
+/*
+ *************************************************************************
+ *
+ * Indirect vectors table
+ *
+ * Symbols referenced here must be defined somewhere else
+ *
+ *************************************************************************
+ */
+
+	.globl	_undefined_instruction
+	.globl	_software_interrupt
+	.globl	_prefetch_abort
+	.globl	_data_abort
+	.globl	_not_used
+	.globl	_irq
+	.globl	_fiq
+
+_reset:			.word reset
+_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
+
+	.balignl 16,0xdeadbeef
+
+/*
+ *************************************************************************
+ *
+ * Interrupt handling
+ *
+ *************************************************************************
+ */
+
+/* SPL interrupt handling: just hang */
+
+#ifdef CONFIG_SPL_BUILD
+
+	.align	5
+undefined_instruction:
+software_interrupt:
+prefetch_abort:
+data_abort:
+not_used:
+irq:
+fiq:
+
+1:
+	bl	1b			/* hang and never return */
+
+#else	/* !CONFIG_SPL_BUILD */
+
+/* IRQ stack memory (calculated at run-time) + 8 bytes */
+.globl IRQ_STACK_START_IN
+IRQ_STACK_START_IN:
+	.word	0x0badc0de
+
+#ifdef CONFIG_USE_IRQ
+/* IRQ stack memory (calculated at run-time) */
+.globl IRQ_STACK_START
+IRQ_STACK_START:
+	.word	0x0badc0de
+
+/* IRQ stack memory (calculated at run-time) */
+.globl FIQ_STACK_START
+FIQ_STACK_START:
+	.word 0x0badc0de
+
+#endif /* CONFIG_USE_IRQ */
+
+@
+@ IRQ stack frame.
+@
+#define S_FRAME_SIZE	72
+
+#define S_OLD_R0	68
+#define S_PSR		64
+#define S_PC		60
+#define S_LR		56
+#define S_SP		52
+
+#define S_IP		48
+#define S_FP		44
+#define S_R10		40
+#define S_R9		36
+#define S_R8		32
+#define S_R7		28
+#define S_R6		24
+#define S_R5		20
+#define S_R4		16
+#define S_R3		12
+#define S_R2		8
+#define S_R1		4
+#define S_R0		0
+
+#define MODE_SVC 0x13
+#define I_BIT	 0x80
+
+/*
+ * use bad_save_user_regs for abort/prefetch/undef/swi ...
+ * use irq_save_user_regs / irq_restore_user_regs for IRQ/FIQ handling
+ */
+
+	.macro	bad_save_user_regs
+	@ carve out a frame on current user stack
+	sub	sp, sp, #S_FRAME_SIZE
+	stmia	sp, {r0 - r12}	@ Save user registers (now in svc mode) r0-r12
+	ldr	r2, IRQ_STACK_START_IN
+	@ get values for "aborted" pc and cpsr (into parm regs)
+	ldmia	r2, {r2 - r3}
+	add	r0, sp, #S_FRAME_SIZE		@ grab pointer to old stack
+	add	r5, sp, #S_SP
+	mov	r1, lr
+	stmia	r5, {r0 - r3}	@ save sp_SVC, lr_SVC, pc, cpsr
+	mov	r0, sp		@ save current stack into r0 (param register)
+	.endm
+
+	.macro	irq_save_user_regs
+	sub	sp, sp, #S_FRAME_SIZE
+	stmia	sp, {r0 - r12}			@ Calling r0-r12
+	@ !!!! R8 NEEDS to be saved !!!! a reserved stack spot would be good.
+	add	r8, sp, #S_PC
+	stmdb	r8, {sp, lr}^		@ Calling SP, LR
+	str	lr, [r8, #0]		@ Save calling PC
+	mrs	r6, spsr
+	str	r6, [r8, #4]		@ Save CPSR
+	str	r0, [r8, #8]		@ Save OLD_R0
+	mov	r0, sp
+	.endm
+
+	.macro	irq_restore_user_regs
+	ldmia	sp, {r0 - lr}^			@ Calling r0 - lr
+	mov	r0, r0
+	ldr	lr, [sp, #S_PC]			@ Get PC
+	add	sp, sp, #S_FRAME_SIZE
+	subs	pc, lr, #4		@ return & move spsr_svc into cpsr
+	.endm
+
+	.macro get_bad_stack
+	ldr	r13, IRQ_STACK_START_IN		@ setup our mode stack
+
+	str	lr, [r13]	@ save caller lr in position 0 of saved stack
+	mrs	lr, spsr	@ get the spsr
+	str	lr, [r13, #4]	@ save spsr in position 1 of saved stack
+	mov	r13, #MODE_SVC	@ prepare SVC-Mode
+	@ msr	spsr_c, r13
+	msr	spsr, r13	@ switch modes, make sure moves will execute
+	mov	lr, pc		@ capture return pc
+	movs	pc, lr		@ jump to next instruction & switch modes.
+	.endm
+
+	.macro get_irq_stack			@ setup IRQ stack
+	ldr	sp, IRQ_STACK_START
+	.endm
+
+	.macro get_fiq_stack			@ setup FIQ stack
+	ldr	sp, FIQ_STACK_START
+	.endm
+
+/*
+ * exception handlers
+ */
+
+	.align  5
+undefined_instruction:
+	get_bad_stack
+	bad_save_user_regs
+	bl	do_undefined_instruction
+
+	.align	5
+software_interrupt:
+	get_bad_stack
+	bad_save_user_regs
+	bl	do_software_interrupt
+
+	.align	5
+prefetch_abort:
+	get_bad_stack
+	bad_save_user_regs
+	bl	do_prefetch_abort
+
+	.align	5
+data_abort:
+	get_bad_stack
+	bad_save_user_regs
+	bl	do_data_abort
+
+	.align	5
+not_used:
+	get_bad_stack
+	bad_save_user_regs
+	bl	do_not_used
+
+#ifdef CONFIG_USE_IRQ
+
+	.align	5
+irq:
+	get_irq_stack
+	irq_save_user_regs
+	bl	do_irq
+	irq_restore_user_regs
+
+	.align	5
+fiq:
+	get_fiq_stack
+	/* someone ought to write a more effiction fiq_save_user_regs */
+	irq_save_user_regs
+	bl	do_fiq
+	irq_restore_user_regs
+
+#else
+
+	.align	5
+irq:
+	get_bad_stack
+	bad_save_user_regs
+	bl	do_irq
+
+	.align	5
+fiq:
+	get_bad_stack
+	bad_save_user_regs
+	bl	do_fiq
+
+#endif /* CONFIG_USE_IRQ */
+
+#endif	/* CONFIG_SPL_BUILD */

board/compulab/cm_t335/u-boot.lds

@@ -18,6 +18,7 @@ SECTIONS
 	.text :
 	{
 		*(.__image_copy_start)
+		*(.vectors)
 		CPUDIR/start.o (.text*)
 		board/compulab/cm_t335/built-in.o (.text*)
 		*(.text*)

board/freescale/mx31ads/u-boot.lds

@@ -22,6 +22,7 @@ SECTIONS
 	  /* WARNING - the following is hand-optimized to fit within	*/
 	  /* the sector layout of our flash chips!	XXX FIXME XXX	*/
 
+	  *					(.vectors)
 	  arch/arm/cpu/arm1136/start.o		(.text*)
 	  board/freescale/mx31ads/built-in.o	(.text*)
 	  arch/arm/lib/built-in.o		(.text*)

board/ti/am335x/u-boot.lds

@@ -34,6 +34,7 @@ SECTIONS
 	.text :
 	{
 		*(.__image_copy_start)
+		*(.vectors)
 		CPUDIR/start.o (.text*)
 		board/ti/am335x/built-in.o (.text*)
 		*(.text*)