[proxmark3-svn] / bootrom / flash-reset.s

@-----------------------------------------------------------------------------
@ This code is licensed to you under the terms of the GNU GPL, version 2 or,
@ at your option, any later version. See the LICENSE.txt file for the text of
@ the license.
@-----------------------------------------------------------------------------
@ Reset vector for running from FLASH
@-----------------------------------------------------------------------------

.extern CopyBootToRAM

.section .startup,"ax"
         .code 32
         .align 0

.global flashstart
flashstart:
    b       Reset
    b       UndefinedInstruction
    b       SoftwareInterrupt
    b       PrefetchAbort
    b       DataAbort
    b       Reserved
    b       Irq
    b       Fiq

Reset:
    ldr     sp,     .stack_end	@ initialize stack pointer to top of RAM
    bl      CopyBootToRAM			@ copy bootloader to RAM (in case the
    								@ user re-flashes the bootloader)
    ldr     r3,     .bootphase2_start	@ start address of RAM bootloader
    bx      r3						@ jump to it

	.stack_end:
	.word _stack_end
	.bootphase2_start:
	.word __bootphase2_start__

Fiq:
    b       Fiq
UndefinedInstruction:
    b       UndefinedInstruction
SoftwareInterrupt:
    b       SoftwareInterrupt
PrefetchAbort:
    b       PrefetchAbort
DataAbort:
    b       DataAbort
Reserved:
    b       Reserved
Irq:
    b       Irq
Commit	Line	Data
bd20f8f4	1	@-----------------------------------------------------------------------------
	2	@ This code is licensed to you under the terms of the GNU GPL, version 2 or,
	3	@ at your option, any later version. See the LICENSE.txt file for the text of
	4	@ the license.
	5	@-----------------------------------------------------------------------------
	6	@ Reset vector for running from FLASH
	7	@-----------------------------------------------------------------------------
	8
15c4dc5a	9	.extern CopyBootToRAM
e30c654b	10
15c4dc5a	11	.section .startup,"ax"
	12	.code 32
	13	.align 0
	14
	15	.global flashstart
	16	flashstart:
	17	b Reset
	18	b UndefinedInstruction
	19	b SoftwareInterrupt
	20	b PrefetchAbort
	21	b DataAbort
	22	b Reserved
	23	b Irq
	24	b Fiq
	25
	26	Reset:
	27	ldr sp, .stack_end @ initialize stack pointer to top of RAM
	28	bl CopyBootToRAM @ copy bootloader to RAM (in case the
	29	@ user re-flashes the bootloader)
	30	ldr r3, .bootphase2_start @ start address of RAM bootloader
	31	bx r3 @ jump to it
	32
	33	.stack_end:
	34	.word _stack_end
	35	.bootphase2_start:
	36	.word __bootphase2_start__
	37
	38	Fiq:
	39	b Fiq
	40	UndefinedInstruction:
	41	b UndefinedInstruction
	42	SoftwareInterrupt:
	43	b SoftwareInterrupt
	44	PrefetchAbort:
	45	b PrefetchAbort
	46	DataAbort:
	47	b DataAbort
	48	Reserved:
	49	b Reserved
	50	Irq:
	51	b Irq