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Commit cec28793 authored by Ollie Lho's avatar Ollie Lho
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Use standard product ID exit method for w49f002u 

Corresponding to flashrom svn r7 and coreboot v2 svn r1433.
parent cbbf1259
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Showing with 40 additions and 91 deletions
flash_rom.c
View file @ cec28793
......@@ -116,7 +116,7 @@ struct flashchip * probe_flash(struct flashchip * flash)
}
bios = mmap (0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
//fd_mem, (off_t) (0x100000000-size));
fd_mem, (off_t) (0x0-size));
fd_mem, (off_t) (0xffffffff-size+1));
if (bios == MAP_FAILED) {
perror("Error MMAP /dev/mem");
exit(1);
......
sst49lf040.c
View file @ cec28793
......@@ -23,8 +23,6 @@
*
* $Id$
*/
#include <stdio.h>
#include "flash.h"
#include "jedec.h"
......@@ -37,35 +35,7 @@
#define RESET 0xFF
#define READ_ID 0x90
static __inline__ void protect_49lf040 (volatile char * bios)
{
/* ask compiler not to optimize this */
volatile unsigned char tmp;
tmp = *(volatile unsigned char *) (bios + 0x1823);
tmp = *(volatile unsigned char *) (bios + 0x1820);
tmp = *(volatile unsigned char *) (bios + 0x1822);
tmp = *(volatile unsigned char *) (bios + 0x0418);
tmp = *(volatile unsigned char *) (bios + 0x041B);
tmp = *(volatile unsigned char *) (bios + 0x0419);
tmp = *(volatile unsigned char *) (bios + 0x040A);
}
static __inline__ void unprotect_49lf040 (volatile char * bios)
{
/* ask compiler not to optimize this */
volatile unsigned char tmp;
tmp = *(volatile unsigned char *) (bios + 0x1823);
tmp = *(volatile unsigned char *) (bios + 0x1820);
tmp = *(volatile unsigned char *) (bios + 0x1822);
tmp = *(volatile unsigned char *) (bios + 0x0418);
tmp = *(volatile unsigned char *) (bios + 0x041B);
tmp = *(volatile unsigned char *) (bios + 0x0419);
tmp = *(volatile unsigned char *) (bios + 0x041A);
}
int erase_sector_49lf040 (volatile char * bios, unsigned int page)
static int erase_sector_49lf040 (volatile char * bios, unsigned int page)
{
/* Chip erase function does not exist for LPC mode on 49lf040.
* Erase sector-by-sector instead. */
......@@ -99,9 +69,9 @@ int erase_sector_49lf040 (volatile char * bios, unsigned int page)
}
static __inline__ int write_sector_49lf040(volatile char * bios,
unsigned char * src,
volatile unsigned char * dst,
unsigned int page_size)
unsigned char * src,
volatile unsigned char * dst,
unsigned int page_size)
{
int i;
volatile char *Temp;
......@@ -146,7 +116,6 @@ int probe_49lf040 (struct flashchip * flash)
*(volatile char *) (bios + 0x2AAA) = 0x55;
myusec_delay(10);
*(volatile char *) (bios + 0x5555) = 0x90;
myusec_delay(10);
id1 = *(volatile unsigned char *) bios;
......@@ -165,6 +134,7 @@ int probe_49lf040 (struct flashchip * flash)
return 0;
}
/* Chip erase only works in parallel programming mode for the 49lf040.
* Use sector-erase instead */
int erase_49lf040 (struct flashchip * flash)
......@@ -190,7 +160,6 @@ int erase_49lf040 (struct flashchip * flash)
myusec_delay(10);
Temp = bios + 0x5555; /* set up address to be C000:5555h */
*Temp = 0x10; /* write data 0x55 to the address */
myusec_delay(50000);
return(0);
......@@ -202,8 +171,6 @@ int write_49lf040 (struct flashchip * flash, unsigned char * buf)
int total_size = flash->total_size * 1024, page_size = flash->page_size;
volatile char * bios = flash->virt_addr;
// unprotect_49lf040 (bios);
// erase_49lf040(flash); /* Must be done sector-by-sector in LPC mode */
printf ("Programming Page: ");
for (i = 0; i < total_size/page_size; i++) {
/* erase the page before programming */
......@@ -218,7 +185,5 @@ int write_49lf040 (struct flashchip * flash, unsigned char * buf)
}
printf("\n");
// protect_49lf040 (bios);
return(0);
}
udelay.c
View file @ cec28793
......@@ -7,7 +7,7 @@ unsigned long micro = 1;
void myusec_delay(int time)
{
volatile unsigned long i;
for(i = 0; i < time * micro; i++)
for (i = 0; i < time * micro; i++)
;
}
......@@ -38,6 +38,4 @@ void myusec_calibrate_delay()
micro = count / timeusec;
fprintf(stderr, "%ldM loops per second\n", (unsigned long)micro);
}
w49f002u.c
View file @ cec28793
......@@ -22,7 +22,7 @@
* Reference:
* W49F002U data sheet
*
* $Id
* $Id$
*/
#include <stdio.h>
......@@ -35,14 +35,16 @@ int probe_49f002 (struct flashchip * flash)
volatile char * bios = flash->virt_addr;
unsigned char id1, id2;
*(bios + 0x5555) = 0xAA;
*(bios + 0x2AAA) = 0x55;
*(bios + 0x5555) = 0x90;
*(volatile char *) (bios + 0x5555) = 0xAA;
*(volatile char *) (bios + 0x2AAA) = 0x55;
*(volatile char *) (bios + 0x5555) = 0x90;
id1 = *(volatile unsigned char *) bios;
id2 = *(volatile unsigned char *) (bios + 0x01);
*bios = 0xF0;
*(volatile char *) (bios + 0x5555) = 0xAA;
*(volatile char *) (bios + 0x2AAA) = 0x55;
*(volatile char *) (bios + 0x5555) = 0xF0;
myusec_delay(10);
......@@ -68,52 +70,36 @@ int erase_49f002 (struct flashchip * flash)
myusec_delay(100);
toggle_ready_jedec(bios);
// while ((*bios & 0x40) != 0x40)
//;
#if 0
toggle_ready_jedec(bios);
*(bios + 0x0ffff) = 0x30;
*(bios + 0x1ffff) = 0x30;
*(bios + 0x2ffff) = 0x30;
*(bios + 0x37fff) = 0x30;
*(bios + 0x39fff) = 0x30;
*(bios + 0x3bfff) = 0x30;
#endif
return(0);
}
int write_49f002 (struct flashchip * flash, unsigned char * buf)
{
int i;
int total_size = flash->total_size * 1024;
volatile char * bios = flash->virt_addr;
volatile char * dst = bios;
*bios = 0xF0;
myusec_delay(10);
erase_49f002(flash);
//*bios = 0xF0;
#if 1
printf ("Programming Page: ");
for (i = 0; i < total_size; i++) {
/* write to the sector */
if ((i & 0xfff) == 0)
printf ("address: 0x%08lx", (unsigned long)i);
*(bios + 0x5555) = 0xAA;
*(bios + 0x2AAA) = 0x55;
*(bios + 0x5555) = 0xA0;
*dst++ = *buf++;
/* wait for Toggle bit ready */
toggle_ready_jedec(dst);
int i;
int total_size = flash->total_size * 1024;
volatile char * bios = flash->virt_addr;
volatile char * dst = bios;
if ((i & 0xfff) == 0)
printf ("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
}
#endif
printf("\n");
myusec_delay(10);
erase_49f002(flash);
printf ("Programming Page: ");
for (i = 0; i < total_size; i++) {
/* write to the sector */
if ((i & 0xfff) == 0)
printf ("address: 0x%08lx", (unsigned long)i);
*(bios + 0x5555) = 0xAA;
*(bios + 0x2AAA) = 0x55;
*(bios + 0x5555) = 0xA0;
*dst++ = *buf++;
/* wait for Toggle bit ready */
toggle_ready_jedec(dst);
if ((i & 0xfff) == 0)
printf ("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
}
printf("\n");
return(0);
return(0);
}
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