sravan/system76-coreboot
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removed spd_dump.c, it has nothing to do with flashing flash parts.

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use standard product ID exit method for w49f002u
move udelay stuff into its own file


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1433 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Li-Ta Lo
2004-03-17 23:03:37 +00:00
parent e74ff463c4
commit 698f23db22
4 changed files with 38 additions and 89 deletions
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45
util/flash_and_burn/sst49lf040.c
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@ -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);
}