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bootldr: properly chain from vector table entry

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This commit is contained in:
ikari 2012-02-27 12:43:50 +01:00
parent 8d015f8080
commit 7eb65e35ce
2 changed files with 12 additions and 2 deletions
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2
src/bootldr/config.h
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@ -1,7 +1,7 @@
#ifndef _CONFIG_H
#define _CONFIG_H
//#define DEBUG_BL
// #define DEBUG_BL
// #define DEBUG_SD
// #define DEBUG_IRQ

12
src/bootldr/main.c
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@ -23,7 +23,7 @@ int i;
volatile enum diskstates disk_state;
extern volatile tick_t ticks;
int (*chain)(void) = (void*)(FW_START+0x000001c5);
int (*chain)(void);
int main(void) {
SNES_CIC_PAIR_REG->FIODIR = BV(SNES_CIC_PAIR_BIT);
@ -86,6 +86,16 @@ DBG_BL printf("PCONP=%lx\n", LPC_SC->PCONP);
NVIC_DisableIRQ(UART_IRQ);
SCB->VTOR=FW_START+0x00000100;
chain = (void*)(*((uint32_t*)(FW_START+0x00000104)));
uart_putc("0123456789abcdef"[((uint32_t)chain>>28)&15]);
uart_putc("0123456789abcdef"[((uint32_t)chain>>24)&15]);
uart_putc("0123456789abcdef"[((uint32_t)chain>>20)&15]);
uart_putc("0123456789abcdef"[((uint32_t)chain>>16)&15]);
uart_putc("0123456789abcdef"[((uint32_t)chain>>12)&15]);
uart_putc("0123456789abcdef"[((uint32_t)chain>>8)&15]);
uart_putc("0123456789abcdef"[((uint32_t)chain>>4)&15]);
uart_putc("0123456789abcdef"[((uint32_t)chain)&15]);
uart_putc('\n');
chain();
while(1);
}