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Code

try to debug the nand_read

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This commit is contained in:
xiangfu 2008-07-13 13:20:35 -04:00
parent 05afbb65a7
commit 12ba156cfb
4 changed files with 101 additions and 58 deletions
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80
qiboot/src/blink_led.c
View File

@ -20,36 +20,70 @@
* MA 02111-1307 USA
*/
#include "blink_led.h"
#define GPBCON (*(volatile unsigned *)0x56000010)
#define GPBDAT (*(volatile unsigned *)0x56000014)
#define GPBDW (*(volatile unsigned *)0x56000018)
#define LED3_ON() (GPBDAT &= ~(0x1))
#define LED4_ON() (GPBDAT &= ~(0x2))
#define LED3_OFF() (GPBDAT |= (0x1))
#define LED4_OFF() (GPBDAT |= (0x2))
int delay(int time)
{
int i=0;
for(i=0;i<time;i++);
return 0;
int i=0;
for(i=0;i<time;i++);
return 0;
}
int set_GPB()
{
GPBCON = 0x5;
GPBDW = 0xffff;
return 0;
}
int orange_on(int times)
{
int count=0;
set_GPB();
for(count=0;count<times;count++)
{
ORANGE_ON();
delay(0xfffff);
ORANGE_OFF() ;
delay(0xfffff);
}
return 0;
}
int blue_on(int times)
{
int count=0;
set_GPB();
for(count=0;count<times;count++)
{
BLUE_ON();
delay(0xfffff);
BLUE_OFF();
delay(0xfffff);
}
return 0;
}
int blink_led()
{
GPBCON = 0x5;
GPBDW = 0xffff;
while(1)
{
LED3_ON();
delay(0xfffff);
LED3_OFF() ;
delay(0xfffff);
set_GPB();
LED4_ON();
delay(0xfffff);
LED4_OFF();
delay(0xfffff);
while(1)
{
ORANGE_ON();
delay(0xfffff);
ORANGE_OFF() ;
delay(0xfffff);
BLUE_ON();
delay(0xfffff);
BLUE_OFF();
delay(0xfffff);
}
return 0;
return 0;
}

13
qiboot/src/blink_led.h
View File

@ -23,6 +23,19 @@
#ifndef __BLINK_LED_H
#define __BLINK_LED_H
#define GPBCON (*(volatile unsigned *)0x56000010)
#define GPBDAT (*(volatile unsigned *)0x56000014)
#define GPBDW (*(volatile unsigned *)0x56000018)
#define ORANGE_OFF() (GPBDAT &= ~(0x1))
#define BLUE_OFF() (GPBDAT &= ~(0x2))
#define ORANGE_ON() (GPBDAT |= (0x1))
#define BLUE_ON() (GPBDAT |= (0x2))
#define ORANGE 1;
#define BLUE 0;
int orange_on(int times);
int blue_on(int times);
int blink_led();
#endif /* __BLINK_LED_H */

52
qiboot/src/nand_read.c
View File

@ -19,6 +19,7 @@
#include <linux/mtd/nand.h>
*/
#include "nand_read.h"
#include "blink_led.h"
#define NAND_CMD_READ0 0
#define NAND_CMD_READSTART 0x30
@ -106,36 +107,35 @@ static int nand_read_page_ll(unsigned char *buf, unsigned long addr)
/* low level nand read function */
int nand_read_ll(unsigned char *buf, unsigned long start_addr, int size)
{
int i, j;
int i, j;
if ((start_addr & NAND_BLOCK_MASK) || (size & NAND_BLOCK_MASK))
return -1; /* invalid alignment */
if ((start_addr & NAND_BLOCK_MASK) || (size & NAND_BLOCK_MASK))
return -1; /* invalid alignment */
/* chip Enable */
nand_select();
nand_clear_RnB();
for (i=0; i<10; i++);
/* chip Enable */
nand_select();
nand_clear_RnB();
for (i=0; i<10; i++);
for (i=start_addr; i < (start_addr + size);) {
for (i=start_addr; i < (start_addr + size);) {
if (i % NAND_BLOCK_SIZE == 0) {
if (is_bad_block(i) ||
is_bad_block(i + NAND_PAGE_SIZE)) {
orange_on(1);
i += NAND_BLOCK_SIZE;
size += NAND_BLOCK_SIZE;
continue;
}
}
blue_on(1);
j = nand_read_page_ll(buf, i);
i += j;
/* buf += j;*/
}
if (i % NAND_BLOCK_SIZE == 0) {
if (is_bad_block(i) ||
is_bad_block(i + NAND_PAGE_SIZE)) {
/* Bad block */
i += NAND_BLOCK_SIZE;
size += NAND_BLOCK_SIZE;
continue;
}
}
/* chip Disable */
nand_deselect();
j = nand_read_page_ll(buf, i);
i += j;
buf += j;
}
/* chip Disable */
nand_deselect();
return 0;
return 0;
}

12
qiboot/src/start_kboot.c
View File

@ -38,19 +38,15 @@ unsigned char buf[2048];
int start_kboot()
{
if(nand_read_ll(buf, 0x32000000, sizeof(buf))==-1) {
blink_led();
if(nand_read_ll(buf, 0x32000000, sizeof(buf))==-1)
{
while(1){blink_led(1);}
}
/*
void (*fp)(void)=(void (*)(void))&buf;
(fp)();
*/
asm volatile("mov pc, %0\n"
: /* output */
:"r"(ADDR) /* input */
);
return 0;
}