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git://projects.qi-hardware.com/xburst-tools.git
synced 2024-11-22 11:59:21 +02:00
try to debug the nand_read
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05afbb65a7
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@ -20,36 +20,70 @@
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* MA 02111-1307 USA
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*/
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#include "blink_led.h"
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#define GPBCON (*(volatile unsigned *)0x56000010)
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#define GPBDAT (*(volatile unsigned *)0x56000014)
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#define GPBDW (*(volatile unsigned *)0x56000018)
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#define LED3_ON() (GPBDAT &= ~(0x1))
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#define LED4_ON() (GPBDAT &= ~(0x2))
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#define LED3_OFF() (GPBDAT |= (0x1))
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#define LED4_OFF() (GPBDAT |= (0x2))
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int delay(int time)
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{
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int i=0;
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for(i=0;i<time;i++);
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return 0;
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int i=0;
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for(i=0;i<time;i++);
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return 0;
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}
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int set_GPB()
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{
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GPBCON = 0x5;
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GPBDW = 0xffff;
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return 0;
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}
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int orange_on(int times)
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{
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int count=0;
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set_GPB();
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for(count=0;count<times;count++)
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{
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ORANGE_ON();
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delay(0xfffff);
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ORANGE_OFF() ;
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delay(0xfffff);
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}
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return 0;
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}
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int blue_on(int times)
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{
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int count=0;
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set_GPB();
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for(count=0;count<times;count++)
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{
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BLUE_ON();
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delay(0xfffff);
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BLUE_OFF();
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delay(0xfffff);
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}
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return 0;
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}
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int blink_led()
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{
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GPBCON = 0x5;
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GPBDW = 0xffff;
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while(1)
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{
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LED3_ON();
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delay(0xfffff);
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LED3_OFF() ;
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delay(0xfffff);
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set_GPB();
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LED4_ON();
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delay(0xfffff);
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LED4_OFF();
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delay(0xfffff);
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while(1)
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{
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ORANGE_ON();
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delay(0xfffff);
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ORANGE_OFF() ;
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delay(0xfffff);
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BLUE_ON();
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delay(0xfffff);
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BLUE_OFF();
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delay(0xfffff);
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}
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return 0;
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return 0;
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}
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@ -23,6 +23,19 @@
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#ifndef __BLINK_LED_H
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#define __BLINK_LED_H
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#define GPBCON (*(volatile unsigned *)0x56000010)
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#define GPBDAT (*(volatile unsigned *)0x56000014)
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#define GPBDW (*(volatile unsigned *)0x56000018)
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#define ORANGE_OFF() (GPBDAT &= ~(0x1))
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#define BLUE_OFF() (GPBDAT &= ~(0x2))
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#define ORANGE_ON() (GPBDAT |= (0x1))
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#define BLUE_ON() (GPBDAT |= (0x2))
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#define ORANGE 1;
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#define BLUE 0;
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int orange_on(int times);
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int blue_on(int times);
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int blink_led();
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#endif /* __BLINK_LED_H */
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@ -19,6 +19,7 @@
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#include <linux/mtd/nand.h>
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*/
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#include "nand_read.h"
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#include "blink_led.h"
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#define NAND_CMD_READ0 0
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#define NAND_CMD_READSTART 0x30
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@ -106,36 +107,35 @@ static int nand_read_page_ll(unsigned char *buf, unsigned long addr)
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/* low level nand read function */
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int nand_read_ll(unsigned char *buf, unsigned long start_addr, int size)
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{
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int i, j;
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int i, j;
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if ((start_addr & NAND_BLOCK_MASK) || (size & NAND_BLOCK_MASK))
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return -1; /* invalid alignment */
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if ((start_addr & NAND_BLOCK_MASK) || (size & NAND_BLOCK_MASK))
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return -1; /* invalid alignment */
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/* chip Enable */
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nand_select();
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nand_clear_RnB();
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for (i=0; i<10; i++);
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/* chip Enable */
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nand_select();
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nand_clear_RnB();
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for (i=0; i<10; i++);
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for (i=start_addr; i < (start_addr + size);) {
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for (i=start_addr; i < (start_addr + size);) {
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if (i % NAND_BLOCK_SIZE == 0) {
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if (is_bad_block(i) ||
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is_bad_block(i + NAND_PAGE_SIZE)) {
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orange_on(1);
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i += NAND_BLOCK_SIZE;
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size += NAND_BLOCK_SIZE;
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continue;
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}
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}
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blue_on(1);
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j = nand_read_page_ll(buf, i);
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i += j;
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/* buf += j;*/
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}
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if (i % NAND_BLOCK_SIZE == 0) {
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if (is_bad_block(i) ||
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is_bad_block(i + NAND_PAGE_SIZE)) {
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/* Bad block */
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i += NAND_BLOCK_SIZE;
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size += NAND_BLOCK_SIZE;
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continue;
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}
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}
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j = nand_read_page_ll(buf, i);
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i += j;
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buf += j;
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}
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/* chip Disable */
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nand_deselect();
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return 0;
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/* chip Disable */
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nand_deselect();
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return 0;
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}
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@ -38,19 +38,15 @@ unsigned char buf[2048];
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int start_kboot()
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{
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if(nand_read_ll(buf, 0x32000000, sizeof(buf))==-1) {
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blink_led();
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if(nand_read_ll(buf, 0x32000000, sizeof(buf))==-1)
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{
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while(1){blink_led(1);}
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}
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/*
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void (*fp)(void)=(void (*)(void))&buf;
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(fp)();
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*/
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asm volatile("mov pc, %0\n"
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: /* output */
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:"r"(ADDR) /* input */
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);
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return 0;
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}
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