> Anyone have some sample code to do this? ;-|
From sciopta BSP for phyCore2294:
@ Start Vector
VectorTable:
LDR PC, Reset_Addr
LDR PC, Undefined_Addr
LDR PC, SWI_Addr
LDR PC, Prefetch_Addr
LDR PC, Abort_Addr
ldr pc, _2ndSWI_Addr
ldr pc, [pc, #-0xff0]
ldr pc, fiq_Addr
Reset_Addr: .long _start
Undefined_Addr: .long Undefined_Handler
SWI_Addr: .long sc_sysSWI
Prefetch_Addr: .long Prefetch_Handler
Abort_Addr: .long Abort_Handler
fiq_Addr: .long FIQ_Handler
_2ndSWI_Addr: .long user_SWI_handler
@ The some of the following handlers do not do anything useful
@ in this example.
@
Undefined_Handler:
B Undefined_Handler
Prefetch_Handler:
B Prefetch_Handler
Abort_Handler:
B Abort_Handler
FIQ_Handler:
B FIQ_Handler
@ --------------------------------------
@ --- Map vector table into SRAM and copy
@ --- if not in external flash
@ --------------------------------------
ldr r0,=MEMMAP
mov r1,#MEMMAP_SRAM @ default: map SRAM
ldr r11,=VectorTable @ current vector-table address
mov r12,#0x40000000 @ destination
cmp r11,#0x80000000 @ start of external Flash ?
moveq r1,#MEMMAP_EXTERN @ yes, map extern
ldmneia r11!,{r2-r9} @ not extern, copy
stmneia r12!,{r2-r9}
ldmneia r11!,{r2-r8}
stmneia r12!,{r2-r8}
str r1,[r0,#0]
--
42Bastian SchickMessage
Re: [lpc2000] Copying the IVT to RAM
2005-02-03 by 42Bastian Schick
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