Lpc2000

Can't you just set the MEMMAP register to 0x02 for this?

--fred

--- In lpc2000@yahoogroups.com, "Steven" <keingpen@y...> wrote:
> I am running a self programmed bootloader and the looding process 
> works great.
> I usually use a Keil ARM7 compiler but for the project I am working 
> on I am forced
> to use the ARM GCC compiler.  Keil does a greate job of relocating 
> the vector 
> table for me but I can't get the vector table to relocate to RAM
> 
> Is this a valid method to relocate the vector table?
> 
> 
> 
> 
> Vectors:
>         b     _start                    // reset - _start
>         ldr   pc,_undf                  // undefined - _undf
>         ldr   pc,_swi                   // SWI - _swi
>         ldr   pc,_pabt                  // program abort - _pabt
>         ldr   pc,_dabt                  // data abort - _dabt
>         nop                             // reserved
>         ldr   pc,[pc,#-0xFF0]           // IRQ - read the VIC
>         ldr   pc,_fiq                   // FIQ - _fiq
> 
> #if 0
> // Use this group for production
> _undf:  .word _reset                    // undefined - _reset
> _swi:   .word _reset                    // SWI - _reset
> _pabt:  .word _reset                    // program abort - _reset
> _dabt:  .word _reset                    // data abort - _reset
> _irq:   .word _reset                    // IRQ - _reset
> _fiq:   .word _reset                    // FIQ - _reset
> 
> #else
> // Use this group for development
> _undf:  .word __undf                    // undefined
> _swi:   .word __swi                     // SWI
> _pabt:  .word __pabt                    // program abort
> _dabt:  .word __dabt                    // data abort
> _irq:   .word __irq                     // IRQ
> _fiq:   .word __fiq                     // FIQ
> 
> __undf: b     .                         // undefined
> __swi:  b     .                         // SWI
> __pabt: b     .                         // program abort
> __dabt: b     .                         // data abort
> __irq:  b     .                         // IRQ
> __fiq:  b     .                         // FIQ
> #endif
>         .size _boot, . - _boot
>         .endfunc
> 
> 
> // Setup the operating mode & stack.
> // ---------------------------------
>         .global _start, start, _mainCRTStartup
>         .func   _start
> 
> _start:
> start:
> _mainCRTStartup:
> 
> // Initialize Interrupt System
> // - Set stack location for each mode
> // - Leave in System Mode with Interrupts Disabled
> // -----------------------------------------------
> 
> 		ldr r11,=Vectors @ current vector-table address
> 		mov r12,#0x40000000 @ destination
> 		ldmneia r11!,{r2-r9} @ not extern, copy
> 		stmneia r12!,{r2-r9}
> 
> 		ldr r0,=0xE01FC040
> 		mov r1,#2   @ default: map SRAM
> 
> 
> 
> Thanks in advance,
> Steven Easley