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Commit 3770a113 authored by David Hendricks's avatar David Hendricks
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Add support for SST49LF040 

Corresponding to flashrom svn r5 and coreboot v2 svn r1422.
parent 8ff8432c
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Showing with 243 additions and 4 deletions
Makefile
View file @ 3770a113
OBJS = jedec.o sst28sf040.o am29f040b.o mx29f002.c sst39sf020.o m29f400bt.o \
w49f002u.o 82802ab.o msys_doc.o pm49fl004.o
w49f002u.o 82802ab.o msys_doc.o pm49fl004.o sst49lf040.o
CC = gcc -O2 -g -Wall -Werror
all: flash_rom flash_on
......@@ -15,7 +15,7 @@ clean:
flash_rom.o: flash_rom.c flash.h jedec.h \
82802ab.h am29f040b.h m29f400bt.h msys_doc.h mx29f002.h sst28sf040.h \
sst39sf020.h w49f002u.h
sst39sf020.h w49f002u.h sst49lf040.h
flash_on.o: flash_on.c
82802ab.o: 82802ab.c 82802ab.h flash.h
......@@ -25,6 +25,7 @@ msys_doc.o: msys_doc.c msys_doc.h flash.h
mx29f002.o: mx29f002.c mx29f002.h jedec.h flash.h
sst28sf040.o: sst28sf040.c sst28sf040.h jedec.h flash.h
sst39sf020.o: sst39sf020.c sst39sf020.h jedec.h flash.h
sst49lf040.o: sst49lf040.c sst49lf040.h jedec.h flash.h
w49f002u.o: w49f002u.c w49f002u.h jedec.h flash.h
pm49fl004.o: pm49fl004.c pm49fl004.h jedec.h flash.h
......
flash.h
View file @ 3770a113
......@@ -35,7 +35,8 @@ struct flashchip {
#define SST_29EE020A 0x10 /* SST 29EE020 device code */
#define SST_28SF040 0x04 /* SST 29EE040 device code */
#define SST_39SF020 0xB6 /* SST 39SF020 device */
#define SST_39VF020 0xD6 /* SST 39SF020 device */
#define SST_39VF020 0xD6 /* SST 39VF020 device */
#define SST_49LF040 0x51 /* SST 49LF040 device */
#define PMC_ID 0x9D /* PMC Manufacturer ID[B code */
#define PMC_49FL004 0x6E /* PMC 49FL004 device code */
......
flash_rom.c
View file @ 3770a113
......@@ -46,6 +46,7 @@
#include "sst28sf040.h"
#include "w49f002u.h"
#include "sst39sf020.h"
#include "sst49lf040.h"
#include "pm49fl004.h"
#include "mx29f002.h"
......@@ -65,6 +66,9 @@ struct flashchip flashchips[] = {
probe_39sf020, erase_39sf020, write_39sf020, NULL},
{"SST39VF020", SST_ID, SST_39VF020, NULL, 256, 4096,
probe_39sf020, erase_39sf020, write_39sf020, NULL},
{"SST49LF040", SST_ID, SST_49LF040, NULL, 512, 4096,
probe_49lf040, erase_49lf040, write_49lf040, NULL},
#endif
//By LYH begin
{"Pm49FL004", PMC_ID, PMC_49FL004, NULL, 512, 64*1024,
......@@ -373,7 +377,8 @@ struct flashchip * probe_flash(struct flashchip * flash)
flash->total_size * 1024, (unsigned long)size);
}
bios = mmap (0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
fd_mem, (off_t) (0-size));
//fd_mem, (off_t) (0x100000000-size));
fd_mem, (off_t) (0x0-size));
if (bios == MAP_FAILED) {
perror("Error MMAP /dev/mem");
exit(1);
......
sst49lf040.c 0 → 100644
View file @ 3770a113
/* sst40lf020.c: driver for SST40LF040 flash models.
*
*
* Copyright 2000 Silicon Integrated System Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*
* Reference:
* 4 MEgabit (512K x 8) SuperFlash EEPROM, SST49lF040 data sheet
*
* $Id$
*/
#include <stdio.h>
#include "flash.h"
#include "jedec.h"
#include "sst49lf040.h"
#define AUTO_PG_ERASE1 0x20
#define AUTO_PG_ERASE2 0xD0
#define AUTO_PGRM 0x10
#define CHIP_ERASE 0x30
#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)
{
/* Chip erase function does not exist for LPC mode on 49lf040.
* Erase sector-by-sector instead. */
volatile unsigned char *Temp;
/* Issue the Sector Erase command to 40LF040 */
Temp = bios + 0x5555; /* set up address to be C000:5555h */
*Temp = 0xAA; /* write data 0xAA to the address */
myusec_delay(10);
Temp = bios + 0x2AAA; /* set up address to be C000:2AAAh */
*Temp = 0x55; /* write data 0x55 to the address */
myusec_delay(10);
Temp = bios + 0x5555; /* set up address to be C000:5555h */
*Temp = 0x80; /* write data 0x80 to the address */
myusec_delay(10);
Temp = bios + 0x5555; /* set up address to be C000:5555h */
*Temp = 0xAA; /* write data 0xAA to the address */
myusec_delay(10);
Temp = bios + 0x2AAA; /* set up address to be C000:2AAAh */
*Temp = 0x55; /* write data 0x55 to the address */
myusec_delay(10);
Temp = bios + page; /* set up address to be the current sector */
*Temp = 0x30; /* write data 0x30 to the address */
myusec_delay(25000);
/* wait for Toggle bit ready */
toggle_ready_jedec(bios);
myusec_delay(25000);
return(0);
}
static __inline__ int write_sector_49lf040(volatile char * bios,
unsigned char * src,
volatile unsigned char * dst,
unsigned int page_size)
{
int i;
volatile char *Temp;
for (i = 0; i < page_size; i++) {
if (*dst != 0xff) {
printf("FATAL: dst %p not erased (val 0x%x)\n", dst, *dst);
return(-1);
}
/* transfer data from source to destination */
if (*src == 0xFF) {
dst++, src++;
/* If the data is 0xFF, don't program it */
continue;
}
Temp = (bios + 0x5555);
*Temp = 0xAA;
Temp = bios + 0x2AAA;
*Temp = 0x55;
Temp = bios + 0x5555;
*Temp = 0xA0;
*dst = *src;
toggle_ready_jedec(bios);
data_polling_jedec(dst, *src);
if (*dst != *src)
printf("BAD! dst 0x%lx val 0x%x src 0x%x\n",
(unsigned long)dst, *dst, *src);
dst++, src++;
}
return(0);
}
int probe_49lf040 (struct flashchip * flash)
{
volatile char * bios = flash->virt_addr;
unsigned char id1, id2;
*(volatile char *) (bios + 0x5555) = 0xAA;
myusec_delay(10);
*(volatile char *) (bios + 0x2AAA) = 0x55;
myusec_delay(10);
*(volatile char *) (bios + 0x5555) = 0x90;
myusec_delay(10);
id1 = *(volatile unsigned char *) bios;
id2 = *(volatile unsigned char *) (bios + 0x01);
*(volatile char *) (bios + 0x5555) = 0xAA;
*(volatile char *) (bios + 0x2AAA) = 0x55;
*(volatile char *) (bios + 0x5555) = 0xF0;
myusec_delay(10);
printf("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2);
if (id1 == flash->manufacture_id && id2 == flash->model_id)
return 1;
return 0;
}
/* Chip erase only works in parallel programming mode for the 49lf040.
* Use sector-erase instead */
int erase_49lf040 (struct flashchip * flash)
{
volatile unsigned char * bios = flash->virt_addr;
volatile unsigned char *Temp;
/* Issue the Sector Erase command to 40LF040 */
Temp = bios + 0x5555; /* set up address to be C000:5555h */
*Temp = 0xAA; /* write data 0xAA to the address */
myusec_delay(10);
Temp = bios + 0x2AAA; /* set up address to be C000:2AAAh */
*Temp = 0x55; /* write data 0x55 to the address */
myusec_delay(10);
Temp = bios + 0x5555; /* set up address to be C000:5555h */
*Temp = 0x80; /* write data 0x80 to the address */
myusec_delay(10);
Temp = bios + 0x5555; /* set up address to be C000:5555h */
*Temp = 0xAA; /* write data 0xAA to the address */
myusec_delay(10);
Temp = bios + 0x2AAA; /* set up address to be C000:2AAAh */
*Temp = 0x55; /* write data 0x55 to the address */
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);
}
int write_49lf040 (struct flashchip * flash, unsigned char * buf)
{
int i;
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 */
erase_sector_49lf040(bios, i * page_size);
/* write to the sector */
printf ("%04d at address: 0x%08x ", i, i * page_size);
write_sector_49lf040(bios, buf + i * page_size, bios + i * page_size,
page_size);
printf ("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
fflush(stdout);
}
printf("\n");
// protect_49lf040 (bios);
return(0);
}
sst49lf040.h 0 → 100644
View file @ 3770a113
#ifndef __SST49LF040_H__
#define __SST49LF040_H__ 1
extern int probe_49lf040 (struct flashchip * flash);
extern int erase_49lf040 (struct flashchip * flash);
extern int write_49lf040 (struct flashchip * flash, unsigned char * buf);
#endif /* !__SST49LF040_H__ */
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