openwrt/flashrom
1
0
Fork 0
mirror of https://review.coreboot.org/flashrom.git synced 2025-07-02 14:33:18 +02:00
Code Issues Releases Wiki Activity

Use standard product ID exit method for w49f002u

Browse Source 
Corresponding to flashrom svn r7 and coreboot v2 svn r1433.
This commit is contained in:
Ollie Lho
2004-03-17 23:03:37 +00:00
parent cbbf125981
commit cec287936c
4 changed files with 38 additions and 89 deletions
Download Patch File Download Diff File Expand all files Collapse all files

76
w49f002u.c
View File

@ -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;
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++;
myusec_delay(10);
erase_49f002(flash);
/* wait for Toggle bit ready */
toggle_ready_jedec(dst);
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++;
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");
/* wait for Toggle bit ready */
toggle_ready_jedec(dst);
return(0);
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);
}