79 lines
2.0 KiB
C
79 lines
2.0 KiB
C
#include <arm/NXP/LPC17xx/LPC17xx.h>
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#include <string.h>
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#include "config.h"
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#include "obj/autoconf.h"
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#include "clock.h"
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#include "uart.h"
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#include "bits.h"
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#include "power.h"
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#include "timer.h"
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#include "ff.h"
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#include "diskio.h"
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#include "led.h"
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#include "sdnative.h"
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#include "crc.h"
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#include "fileops.h"
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#include "iap.h"
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#define EMC0TOGGLE (3<<4)
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#define MR0R (1<<1)
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int i;
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volatile enum diskstates disk_state;
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extern volatile tick_t ticks;
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int (*chain)(void) = (void*)(FW_START+0x000001c5);
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int main(void) {
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LPC_GPIO2->FIODIR = BV(0) | BV(1) | BV(2);
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LPC_GPIO1->FIODIR = 0;
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LPC_GPIO0->FIODIR = BV(16);
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/* connect UART3 on P0[25:26] + SSP0 on P0[15:18] + MAT3.0 on P0[10] */
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LPC_PINCON->PINSEL1 = BV(18) | BV(19) | BV(20) | BV(21) /* UART3 */
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| BV(3) | BV(5); /* SSP0 (FPGA) except SS */
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LPC_PINCON->PINSEL0 = BV(31); /* SSP0 */
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/* | BV(13) | BV(15) | BV(17) | BV(19) SSP1 (SD) */
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/* pull-down CIC data lines */
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LPC_PINCON->PINMODE3 = BV(18) | BV(19) | BV(20) | BV(21);
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clock_disconnect();
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power_init();
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timer_init();
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uart_init();
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led_init();
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/* do this last because the peripheral init()s change PCLK dividers */
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clock_init();
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LPC_PINCON->PINSEL0 |= BV(20) | BV(21); /* MAT3.0 (FPGA clock) */
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led_pwm();
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sdn_init();
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printf("chksum=%08lx\n", *(uint32_t*)28);
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printf("\n\nsd2snes mk.2 bootloader\nver.: " VER "\ncpu clock: %ld Hz\n", CONFIG_CPU_FREQUENCY);
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printf("PCONP=%lx\n", LPC_SC->PCONP);
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/* setup timer (fpga clk) */
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LPC_TIM3->CTCR=0;
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LPC_TIM3->EMR=EMC0TOGGLE;
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LPC_TIM3->MCR=MR0R;
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LPC_TIM3->MR0=1;
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LPC_TIM3->TCR=1;
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test_iap();
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FLASH_RES res = flash_file((uint8_t*)"/sd2snes/firmware.img");
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printf("flash result = %d\n", res);
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if(res != ERR_OK) {
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if((res = check_flash()) != ERR_OK) {
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printf("check_flash() failed with error %d, not booting.\n", res);
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while(1);
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}
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}
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NVIC_DisableIRQ(RIT_IRQn);
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NVIC_DisableIRQ(UART_IRQ);
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SCB->VTOR=FW_START+0x00000100;
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chain();
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while(1);
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}
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