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due to popular demand, added flash_and_burn to the freebios2 tree. 

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1232 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Ronald G. Minnich 2003-10-25 17:01:29 +00:00
parent 888df97971
commit 94c1b0ccc0
23 changed files with 2574 additions and 0 deletions
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199
util/flash_and_burn/82802ab.c Normal file
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/*
* 82802ab.c: driver for programming JEDEC standard flash parts
*
*
* 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: http://www.intel.com/design/chipsets/datashts/290658.htm
*
* $Id$
*/
#include <errno.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/io.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include "flash.h"
#include "82802ab.h"
// I need that Berkeley bit-map printer
void print_82802ab_status(unsigned char status)
{
printf("%s", status & 0x80 ? "Ready:" : "Busy:");
printf("%s", status & 0x40 ? "BE SUSPEND:" : "BE RUN/FINISH:");
printf("%s", status & 0x20 ? "BE ERROR:" : "BE OK:");
printf("%s", status & 0x10 ? "PROG ERR:" : "PROG OK:");
printf("%s", status & 0x8 ? "VP ERR:" : "VPP OK:");
printf("%s", status & 0x4 ? "PROG SUSPEND:" : "PROG RUN/FINISH:");
printf("%s", status & 0x2 ? "WP|TBL#|WP#,ABORT:" : "UNLOCK:");
}
int probe_82802ab (struct flashchip * flash)
{
volatile unsigned char * bios = flash->virt_addr;
unsigned char id1, id2;
#if 0
*(volatile unsigned char *) (bios + 0x5555) = 0xAA;
*(volatile unsigned char *) (bios + 0x2AAA) = 0x55;
*(volatile unsigned char *) (bios + 0x5555) = 0x90;
#endif
*bios = 0xff;
myusec_delay(10);
*bios = 0x90;
myusec_delay(10);
id1 = *(volatile unsigned char *) bios;
id2 = *(volatile unsigned char *) (bios + 0x01);
#if 1
*(volatile unsigned char *) (bios + 0x5555) = 0xAA;
*(volatile unsigned char *) (bios + 0x2AAA) = 0x55;
*(volatile unsigned char *) (bios + 0x5555) = 0xF0;
#endif
myusec_delay(10);
printf("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2);
if (id1 == flash->manufacture_id && id2 == flash->model_id) {
size_t size = flash->total_size * 1024;
// we need to mmap the write-protect space.
bios = mmap (0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
flash->fd_mem, (off_t) (0 - 0x400000 - size));
if (bios == MAP_FAILED) {
// it's this part but we can't map it ...
perror("Error MMAP /dev/mem");
exit(1);
}
flash->virt_addr_2 = bios;
return 1;
}
return 0;
}
unsigned char wait_82802ab(volatile unsigned char * bios)
{
unsigned char status;
unsigned char id1, id2;
*bios = 0x70;
if ((*bios & 0x80) == 0) { // it's busy
while ((*bios & 0x80) == 0)
;
}
status = *bios;
// put another command to get out of status register mode
*bios = 0x90;
myusec_delay(10);
id1 = *(volatile unsigned char *) bios;
id2 = *(volatile unsigned char *) (bios + 0x01);
// this is needed to jam it out of "read id" mode
*(volatile unsigned char *) (bios + 0x5555) = 0xAA;
*(volatile unsigned char *) (bios + 0x2AAA) = 0x55;
*(volatile unsigned char *) (bios + 0x5555) = 0xF0;
return status;
}
int erase_82802ab_block(struct flashchip *flash, int offset)
{
volatile unsigned char * bios = flash->virt_addr + offset;
volatile unsigned char *wrprotect = flash->virt_addr_2 + offset + 2;
unsigned char status;
// clear status register
*bios = 0x50;
//printf("Erase at %p\n", bios);
// clear write protect
//printf("write protect is at %p\n", (wrprotect));
//printf("write protect is 0x%x\n", *(wrprotect));
*(wrprotect) = 0;
//printf("write protect is 0x%x\n", *(wrprotect));
// now start it
*(volatile unsigned char *) (bios) = 0x20;
*(volatile unsigned char *) (bios) = 0xd0;
myusec_delay(10);
// now let's see what the register is
status = wait_82802ab(flash->virt_addr);
//print_82802ab_status(status);
printf("DONE BLOCK 0x%x\n", offset);
return(0);
}
int erase_82802ab (struct flashchip * flash)
{
int i;
unsigned int total_size = flash->total_size * 1024;
printf("total_size is %d; flash->page_size is %d\n",
total_size, flash->page_size);
for(i = 0; i < total_size; i += flash->page_size)
erase_82802ab_block(flash, i);
printf("DONE ERASE\n");
return(0);
}
void write_page_82802ab (volatile char * bios, char * src, volatile char * dst,
int page_size)
{
int i;
for (i = 0; i < page_size; i++) {
/* transfer data from source to destination */
*dst = 0x40;
*dst++ = *src++;
wait_82802ab(bios);
}
}
int write_82802ab (struct flashchip * flash, unsigned char * buf)
{
int i;
int total_size = flash->total_size *1024, page_size = flash->page_size;
volatile unsigned char * bios = flash->virt_addr;
erase_82802ab (flash);
if (*bios != 0xff) {
printf("ERASE FAILED\n");
return -1;
}
printf ("Programming Page: ");
for (i = 0; i < total_size/page_size; i++) {
printf ("%04d at address: 0x%08x", i, i * page_size);
write_page_82802ab(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");
}
printf("\n");
protect_82802ab (bios);
return(0);
}

48
util/flash_and_burn/82802ab.h Normal file
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#ifndef __82802AB_H__
#define __82802AB_H__ 1
extern int probe_82802ab (struct flashchip * flash);
extern int erase_82802ab (struct flashchip * flash);
extern int write_82802ab (struct flashchip * flash, unsigned char * buf);
extern __inline__ void toggle_ready_82802ab (volatile char * dst)
{
unsigned int i = 0;
char tmp1, tmp2;
tmp1 = *dst & 0x40;
while (i++ < 0xFFFFFF) {
tmp2 = *dst & 0x40;
if (tmp1 == tmp2) {
break;
}
tmp1 = tmp2;
}
}
extern __inline__ void data_polling_82802ab (volatile char * dst, char data)
{
unsigned int i = 0;
char tmp;
data &= 0x80;
while (i++ < 0xFFFFFF) {
tmp = *dst & 0x80;
if (tmp == data) {
break;
}
}
}
extern __inline__ void protect_82802ab (volatile char * bios)
{
*(volatile char *) (bios + 0x5555) = 0xAA;
*(volatile char *) (bios + 0x2AAA) = 0x55;
*(volatile char *) (bios + 0x5555) = 0xA0;
usleep(200);
}
#endif /* !__82802AB_H__ */

30
util/flash_and_burn/Makefile Normal file
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OBJS = jedec.o sst28sf040.o am29f040b.o mx29f002.c sst39sf020.o m29f400bt.o \
w49f002u.o 82802ab.o msys_doc.o
CC = gcc -O2 -g -Wall -Werror
all: flash_rom flash_on
flash_rom: flash_rom.o ${OBJS}
${CC} -o flash_rom flash_rom.c ${OBJS} -lpci
flash_on: flash_on.c
${CC} -o flash_on flash_on.c
clean:
rm -f flash_rom flash_on *.o *~
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
flash_on.o: flash_on.c
82802ab.o: 82802ab.c 82802ab.h flash.h
am29f040b.o: am29f040b.c am29f040b.h jedec.h flash.h
m29f400bt.o: m29f400bt.c m29f400bt.h flash.h
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
w49f002u.o: w49f002u.c w49f002u.h jedec.h flash.h
jedec.o: jedec.c jedec.h flash.h

20
util/flash_and_burn/README Normal file
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on the cs5530 southbridge,
setpci -s 0:12.0 52.b=ee
setpci -x 0:12.0 5b.b= 0x20 (| with whatever is there)
I am making this a general-purpose userland flash burner -- RGM
Earlier notes from Ollie:
Here is some utilities for using/programming flash ROM on SiS 630/950 M/Bs
1. flash_on, turnning on the flash writer enable for 630/950 M/Bs,
you have to run this before load DoC drivers.
2. flash_rom, use your 630/950 M/Bs as a flash programmer for some
flash parts. This utility is made as modular as possible. If
you find your flash part is not supported, you can add a driver
your own. Or sending me the data sheet.
Ollie

130
util/flash_and_burn/am29f040b.c Normal file
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/*
* am29f040.c: driver for programming AMD am29f040b 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:
* AMD Am29F040B data sheet
* $Id$
*/
#include <stdio.h>
#include "flash.h"
#include "jedec.h"
static __inline__ int erase_sector_29f040b (volatile char * bios, unsigned long address)
{
*(bios + 0x555) = 0xAA;
*(bios + 0x2AA) = 0x55;
*(bios + 0x555) = 0x80;
*(bios + 0x555) = 0xAA;
*(bios + 0x2AA) = 0x55;
*(bios + address) = 0x30;
sleep(2);
/* wait for Toggle bit ready */
toggle_ready_jedec(bios + address);
return(0);
}
static __inline__ int write_sector_29f040b(volatile char * bios, unsigned char * src,
volatile unsigned char * dst, unsigned int page_size)
{
int i;
for (i = 0; i < page_size; i++) {
printf("0x%08lx", (unsigned long) dst - (unsigned long) bios);
*(bios + 0x555) = 0xAA;
*(bios + 0x2AA) = 0x55;
*(bios + 0x555) = 0xA0;
*dst++ = *src++;
/* wait for Toggle bit ready */
toggle_ready_jedec(bios);
printf("\b\b\b\b\b\b\b\b\b\b");
}
return(0);
}
int probe_29f040b (struct flashchip * flash)
{
volatile char * bios = flash->virt_addr;
unsigned char id1, id2;
*(bios + 0x555) = 0xAA;
*(bios + 0x2AA) = 0x55;
*(bios + 0x555) = 0x90;
id1 = *(unsigned char *) bios;
id2 = *(unsigned char *) (bios + 0x01);
*bios = 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;
}
int erase_29f040b (struct flashchip * flash)
{
volatile char * bios = flash->virt_addr;
*(bios + 0x555) = 0xAA;
*(bios + 0x2AA) = 0x55;
*(bios + 0x555) = 0x80;
*(bios + 0x555) = 0xAA;
*(bios + 0x2AA) = 0x55;
*(bios + 0x555) = 0x10;
myusec_delay(10);
toggle_ready_jedec(bios);
return(0);
}
int write_29f040b (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;
printf ("Programming Page: ");
for (i = 0; i < total_size/page_size; i++) {
/* erase the page before programming */
erase_sector_29f040b(bios, i * page_size);
/* write to the sector */
printf ("%04d at address: ", i);
write_sector_29f040b(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");
}
printf("\n");
return(0);
}

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util/flash_and_burn/am29f040b.h Normal file
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#ifndef __AM29F040B_H__
#define __AM29F040B_H__ 1
extern int probe_29f040b (struct flashchip * flash);
extern int erase_29f040b (struct flashchip * flash);
extern int write_29f040b (struct flashchip * flash, unsigned char * buf);
#endif /* !__AM29F040B_H__ */

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util/flash_and_burn/flash.h Normal file
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#ifndef __FLASH_H__
#define __FLASH_H__ 1
#include <sys/io.h>
#include <unistd.h>
struct flashchip {
char * name;
int manufacture_id;
int model_id;
volatile char * virt_addr;
int total_size;
int page_size;
int (*probe) (struct flashchip * flash);
int (*erase) (struct flashchip * flash);
int (*write) (struct flashchip * flash, unsigned char * buf);
int (*read) (struct flashchip * flash, unsigned char * buf);
int fd_mem;
volatile char *virt_addr_2;
};
#define AMD_ID 0x01
#define AM_29F040B 0xA4
#define ATMEL_ID 0x1F /* Winbond Manufacture ID code */
#define AT_29C040A 0xA4 /* Winbond w29c020c device code*/
#define MX_ID 0xC2
#define MX_29F002 0xB0
#define SST_ID 0xBF /* SST Manufacturer ID[B code */
#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 WINBOND_ID 0xDA /* Winbond Manufacture ID code */
#define W_29C011 0xC1 /* Winbond w29c011 device code*/
#define W_29C020C 0x45 /* Winbond w29c020c device code*/
#define W_49F002U 0x0B /* Winbond w29c020c device code*/
#define ST_ID 0x20
#define ST_M29F400BT 0xD5
#define MSYSTEMS_ID 0x156f
#define MSYSTEMS_MD2200 0xdb /* ? */
#define MSYSTEMS_MD2800 0x30 /* hmm -- both 0x30 */
#define MSYSTEMS_MD2802 0x30 /* hmm -- both 0x30 */
extern void myusec_delay(int time);
#endif /* !__FLASH_H__ */

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util/flash_and_burn/flash_on.c Normal file
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/*
* flash_rom.c: Turnning on Flash Write Enable for SiS 630/950 M/Bs,
* use this program before loading DoC drivers.
*
*
* 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:
* 1. SiS 630 Specification
* 2. SiS 950 Specification
*
* $Id$
*/
#include <errno.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/io.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
int main()
{
char b;
/* get io privilege access PCI configuration space */
if (iopl(3) != 0) {
perror("Can not set io priviliage");
exit(1);
}
/* Enable 0xFFF8000~0xFFFF0000 decoding on SiS 540/630 */
outl(0x80000840, 0x0cf8);
b = inb(0x0cfc) | 0x0b;
outb(b, 0xcfc);
/* Flash write enable on SiS 540/630 */
outl(0x80000845, 0x0cf8);
b = inb(0x0cfd) | 0x40;
outb(b, 0xcfd);
/* The same thing on SiS 950 SuperIO side */
outb(0x87, 0x2e);
outb(0x01, 0x2e);
outb(0x55, 0x2e);
outb(0x55, 0x2e);
if (inb(0x2f) != 0x87) {
printf("Can not access SiS 950\n");
return -1;
}
outb(0x24, 0x2e);
b = inb(0x2f) | 0xfc;
outb(0x24, 0x2e);
outb(b, 0x2f);
outb(0x02, 0x2e);
outb(0x02, 0x2f);
return(0);
}

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util/flash_and_burn/flash_rom.c Normal file
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/*
* flash_rom.c: Flash programming utility for SiS 630/950 M/Bs
*
*
* 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:
* 1. SiS 630 Specification
* 2. SiS 950 Specification
*
* $Id$
*/
#include <errno.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/io.h>
#include <sys/time.h>
#include <unistd.h>
#include <stdio.h>
#include <pci/pci.h>
#include <string.h>
#include <stdlib.h>
#include "flash.h"
#include "jedec.h"
#include "m29f400bt.h"
#include "82802ab.h"
#include "msys_doc.h"
#include "am29f040b.h"
#include "sst28sf040.h"
#include "w49f002u.h"
#include "sst39sf020.h"
#include "mx29f002.h"
struct flashchip flashchips[] = {
{"Am29F040B", AMD_ID, AM_29F040B, NULL, 512, 64*1024,
probe_29f040b, erase_29f040b, write_29f040b, NULL},
{"At29C040A", ATMEL_ID, AT_29C040A, NULL, 512, 256,
probe_jedec, erase_jedec, write_jedec, NULL},
{"Mx29f002", MX_ID, MX_29F002, NULL, 256, 64*1024,
probe_29f002, erase_29f002, write_29f002, NULL},
{"SST29EE020A", SST_ID, SST_29EE020A, NULL, 256, 128,
probe_jedec, erase_jedec, write_jedec, NULL},
{"SST28SF040A", SST_ID, SST_28SF040, NULL, 512, 256,
probe_28sf040, erase_28sf040, write_28sf040, NULL},
{"SST39SF020A", SST_ID, SST_39SF020, NULL, 256, 4096,
probe_39sf020, erase_39sf020, write_39sf020, NULL},
{"SST39VF020", SST_ID, SST_39VF020, NULL, 256, 4096,
probe_39sf020, erase_39sf020, write_39sf020, NULL},
{"W29C011", WINBOND_ID, W_29C011, NULL, 128, 128,
probe_jedec, erase_jedec, write_jedec, NULL},
{"W29C020C", WINBOND_ID, W_29C020C, NULL, 256, 128,
probe_jedec, erase_jedec, write_jedec, NULL},
{"W49F002U", WINBOND_ID, W_49F002U, NULL, 256, 128,
probe_49f002, erase_49f002, write_49f002, NULL},
{"M29F400BT", ST_ID, ST_M29F400BT , NULL, 512, 64*1024,
probe_m29f400bt, erase_m29f400bt, write_linuxbios_m29f400bt, NULL},
{"82802ab", 137, 173 , NULL, 512, 64*1024,
probe_82802ab, erase_82802ab, write_82802ab, NULL},
{"82802ac", 137, 172 , NULL, 1024, 64*1024,
probe_82802ab, erase_82802ab, write_82802ab, NULL},
{"MD-2802 (M-Systems DiskOnChip Millennium Module)",
MSYSTEMS_ID, MSYSTEMS_MD2802,
NULL, 8, 8*1024,
probe_md2802, erase_md2802, write_md2802, read_md2802},
{NULL,}
};
char *chip_to_probe = NULL;
int enable_flash_sis630 (struct pci_dev *dev, char *name)
{
char b;
/* get io privilege access PCI configuration space */
if (iopl(3) != 0) {
perror("Can not set io priviliage");
exit(1);
}
/* Enable 0xFFF8000~0xFFFF0000 decoding on SiS 540/630 */
outl(0x80000840, 0x0cf8);
b = inb(0x0cfc) | 0x0b;
outb(b, 0xcfc);
/* Flash write enable on SiS 540/630 */
outl(0x80000845, 0x0cf8);
b = inb(0x0cfd) | 0x40;
outb(b, 0xcfd);
/* The same thing on SiS 950 SuperIO side */
outb(0x87, 0x2e);
outb(0x01, 0x2e);
outb(0x55, 0x2e);
outb(0x55, 0x2e);
if (inb(0x2f) != 0x87) {
outb(0x87, 0x4e);
outb(0x01, 0x4e);
outb(0x55, 0x4e);
outb(0xaa, 0x4e);
if (inb(0x4f) != 0x87) {
printf("Can not access SiS 950\n");
return -1;
}
outb(0x24, 0x4e);
b = inb(0x4f) | 0xfc;
outb(0x24, 0x4e);
outb(b, 0x4f);
outb(0x02, 0x4e);
outb(0x02, 0x4f);
}
outb(0x24, 0x2e);
printf("2f is %#x\n", inb(0x2f));
b = inb(0x2f) | 0xfc;
outb(0x24, 0x2e);
outb(b, 0x2f);
outb(0x02, 0x2e);
outb(0x02, 0x2f);
return 0;
}
int
enable_flash_e7500(struct pci_dev *dev, char *name) {
/* register 4e.b gets or'ed with one */
unsigned char old, new;
/* if it fails, it fails. There are so many variations of broken mobos
* that it is hard to argue that we should quit at this point.
*/
old = pci_read_byte(dev, 0x4e);
new = old | 1;
if (new == old)
return 0;
pci_write_byte(dev, 0x4e, new);
if (pci_read_byte(dev, 0x4e) != new) {
printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
0x4e, new, name);
return -1;
}
return 0;
}
int
enable_flash_vt8235(struct pci_dev *dev, char *name) {
unsigned char old, new, val;
unsigned int base;
int ok;
/* get io privilege access PCI configuration space */
if (iopl(3) != 0) {
perror("Can not set io priviliage");
exit(1);
}
old = pci_read_byte(dev, 0x40);
new = old | 0x10;
if (new == old)
return 0;
ok = pci_write_byte(dev, 0x40, new);
if (ok != 0) {
printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
old, new, name);
}
/* enable GPIO15 which is connected to write protect. */
base = ((pci_read_byte(dev, 0x88) & 0x80) | pci_read_byte(dev, 0x89) << 8);
val = inb(base + 0x4d);
val |= 0x80;
outb(val, base + 0x4d);
if (ok != 0) {
return -1;
} else {
return 0;
}
}
int
enable_flash_vt8231(struct pci_dev *dev, char *name) {
unsigned char val;
val = pci_read_byte(dev, 0x40);
val |= 0x10;
pci_write_byte(dev, 0x40, val);
if (pci_read_byte(dev, 0x40) != val) {
printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
0x40, val, name);
return -1;
}
return 0;
}
int
enable_flash_cs5530(struct pci_dev *dev, char *name) {
unsigned char new;
pci_write_byte(dev, 0x52, 0xee);
new = pci_read_byte(dev, 0x52);
if (new != 0xee) {
printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
0x52, new, name);
return -1;
}
return 0;
}
int
enable_flash_sc1100(struct pci_dev *dev, char *name) {
unsigned char new;
pci_write_byte(dev, 0x52, 0xee);
new = pci_read_byte(dev, 0x52);
if (new != 0xee) {
printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
0x52, new, name);
return -1;
}
return 0;
}
int
enable_flash_sis5595(struct pci_dev *dev, char *name) {
unsigned char new, newer;
new = pci_read_byte(dev, 0x45);
/* clear bit 5 */
new &= (~ 0x20);
/* set bit 2 */
new |= 0x4;
pci_write_byte(dev, 0x45, new);
newer = pci_read_byte(dev, 0x45);
if (newer != new) {
printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
0x45, new, name);
printf("Stuck at 0x%x\n", newer);
return -1;
}
return 0;
}
struct flashchip * probe_flash(struct flashchip * flash)
{
int fd_mem;
volatile char * bios;
unsigned long size;
if ((fd_mem = open("/dev/mem", O_RDWR)) < 0) {
perror("Can not open /dev/mem");
exit(1);
}
while (flash->name != NULL) {
if (chip_to_probe && strcmp(flash->name, chip_to_probe) != 0) {
flash++;
continue;
}
printf("Trying %s, %d KB\n", flash->name, flash->total_size);
size = flash->total_size * 1024;
/* BUG? what happens if getpagesize() > size!?
-> ``Error MMAP /dev/mem: Invalid argument'' NIKI */
if(getpagesize() > size)
{
size = getpagesize();
printf("%s: warning: size: %d -> %ld\n", __FUNCTION__,
flash->total_size * 1024, (unsigned long)size);
}
bios = mmap (0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
fd_mem, (off_t) (0 - size));
if (bios == MAP_FAILED) {
perror("Error MMAP /dev/mem");
exit(1);
}
flash->virt_addr = bios;
flash->fd_mem = fd_mem;
if (flash->probe(flash) == 1) {
printf ("%s found at physical address: 0x%lx\n",
flash->name, (0 - size));
return flash;
}
munmap ((void *) bios, size);
flash++;
}
return NULL;
}
int verify_flash (struct flashchip * flash, char * buf, int verbose)
{
int i = 0;
int total_size = flash->total_size *1024;
volatile char * bios = flash->virt_addr;
printf("Verifying address: ");
while (i++ < total_size) {
if (verbose)
printf("0x%08x", i);
if (*(bios+i) != *(buf+i)) {
printf("FAILED\n");
return 0;
}
if (verbose)
printf("\b\b\b\b\b\b\b\b\b\b");
}
if (verbose)
printf("\n");
else
printf("VERIFIED\n");
return 1;
}
// count to a billion. Time it. If it's < 1 sec, count to 10B, etc.
unsigned long micro = 1;
void
myusec_calibrate_delay()
{
int count = 1000;
unsigned long timeusec;
struct timeval start, end;
int ok = 0;
void myusec_delay(int time);
printf("Setting up microsecond timing loop\n");
while (! ok) {
//fprintf(stderr, "Try %d\n", count);
gettimeofday(&start, 0);
myusec_delay(count);
gettimeofday(&end, 0);
timeusec = 1000000 * (end.tv_sec - start.tv_sec ) +
(end.tv_usec - start.tv_usec);
//fprintf(stderr, "timeusec is %d\n", timeusec);
count *= 2;
if (timeusec < 1000000/4)
continue;
ok = 1;
}
// compute one microsecond. That will be count / time
micro = count / timeusec;
fprintf(stderr, "%ldM loops per second\n", (unsigned long)micro);
}
void
myusec_delay(int time)
{
volatile unsigned long i;
for(i = 0; i < time * micro; i++)
;
}
typedef struct penable {
unsigned short vendor, device;
char *name;
int (*doit)(struct pci_dev *dev, char *name);
} FLASH_ENABLE;
FLASH_ENABLE enables[] = {
{0x1, 0x1, "sis630 -- what's the ID?", enable_flash_sis630},
{0x8086, 0x2480, "E7500", enable_flash_e7500},
{0x1106, 0x8231, "VT8231", enable_flash_vt8231},
{0x1106, 0x3177, "VT8235", enable_flash_vt8235},
{0x1078, 0x0100, "CS5530", enable_flash_cs5530},
{0x100b, 0x0510, "SC1100", enable_flash_sc1100},
{0x1039, 0x8, "SIS5595", enable_flash_sis5595},
};
int
enable_flash_write() {
int i;
struct pci_access *pacc;
struct pci_dev *dev = 0;
FLASH_ENABLE *enable = 0;
pacc = pci_alloc(); /* Get the pci_access structure */
/* Set all options you want -- here we stick with the defaults */
pci_init(pacc); /* Initialize the PCI library */
pci_scan_bus(pacc); /* We want to get the list of devices */
/* now let's try to find the chipset we have ... */
for(i = 0; i < sizeof(enables)/sizeof(enables[0]) && (! dev); i++) {
struct pci_filter f;
struct pci_dev *z;
/* the first param is unused. */
pci_filter_init((struct pci_access *) 0, &f);
f.vendor = enables[i].vendor;
f.device = enables[i].device;
for(z=pacc->devices; z; z=z->next)
if (pci_filter_match(&f, z)) {
enable = &enables[i];
dev = z;
}
}
/* now do the deed. */
if (enable) {
printf("Enabling flash write on %s...", enable->name);
if (enable->doit(dev, enable->name) == 0)
printf("OK\n");
}
return 0;
}
void usage(const char *name)
{
printf("usage: %s [-rwv] [-c chipname][file]\n", name);
printf("-r: read flash and save into file\n"
"-w: write file into flash (default when file is specified)\n"
"-v: verify flash against file\n"
"-c: probe only for specified flash chip\n"
" If no file is specified, then all that happens\n"
" is that flash info is dumped\n");
exit(1);
}
int
main (int argc, char * argv[])
{
char * buf;
unsigned long size;
FILE * image;
struct flashchip * flash;
int opt;
int read_it = 0, write_it = 0, verify_it = 0;
char *filename = NULL;
setbuf(stdout, NULL);
while ((opt = getopt(argc, argv, "rwvc:")) != EOF) {
switch (opt) {
case 'r':
read_it = 1;
break;
case 'w':
write_it = 1;
break;
case 'v':
verify_it = 1;
break;
case 'c':
chip_to_probe = strdup(optarg);
break;
default:
usage(argv[0]);
break;
}
}
if (read_it && write_it) {
printf("-r and -w are mutually exclusive\n");
usage(argv[0]);
}
if (optind < argc)
filename = argv[optind++];
printf("Calibrating timer since microsleep sucks ... takes a second\n");
myusec_calibrate_delay();
printf("OK, calibrated, now do the deed\n");
/* try to enable it. Failure IS an option, since not all motherboards
* really need this to be done, etc., etc. It sucks.
*/
(void) enable_flash_write();
if ((flash = probe_flash (flashchips)) == NULL) {
printf("EEPROM not found\n");
exit(1);
}
printf("Part is %s\n", flash->name);
if (!filename){
printf("OK, only ENABLING flash write, but NOT FLASHING\n");
return 0;
}
size = flash->total_size * 1024;
buf = (char *) calloc (size, sizeof(char));
if (read_it) {
if ((image = fopen (filename, "w")) == NULL) {
perror(filename);
exit(1);
}
printf("Reading Flash...");
if(flash->read == NULL)
memcpy(buf, (const char *) flash->virt_addr, size);
else
flash->read (flash, buf);
fwrite(buf, sizeof(char), size, image);
fclose(image);
printf("done\n");
} else {
if ((image = fopen (filename, "r")) == NULL) {
perror(filename);
exit(1);
}
fread (buf, sizeof(char), size, image);
fclose(image);
}
if (write_it || (!read_it && !verify_it))
flash->write (flash, buf);
if (verify_it)
verify_flash (flash, buf, /* verbose = */ 0);
return 0;
}

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/*
* jedec.c: driver for programming JEDEC standard flash parts
*
*
* 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:
*
* $Id$
*/
#include <stdio.h>
#include "flash.h"
#include "jedec.h"
int probe_jedec (struct flashchip * flash)
{
volatile char * bios = flash->virt_addr;
unsigned char id1, id2;
*(volatile char *) (bios + 0x5555) = 0xAA;
*(volatile char *) (bios + 0x2AAA) = 0x55;
*(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;
}
int erase_jedec (struct flashchip * flash)
{
volatile char * bios = flash->virt_addr;
*(volatile char *) (bios + 0x5555) = 0xAA;
*(volatile char *) (bios + 0x2AAA) = 0x55;
*(volatile char *) (bios + 0x5555) = 0x80;
*(volatile char *) (bios + 0x5555) = 0xAA;
*(volatile char *) (bios + 0x2AAA) = 0x55;
*(volatile char *) (bios + 0x5555) = 0x10;
myusec_delay(10);
toggle_ready_jedec(bios);
return(0);
}
int write_jedec (struct flashchip * flash, unsigned char * buf)
{
int i;
int total_size = flash->total_size *1024, page_size = flash->page_size;
volatile unsigned char * bios = flash->virt_addr;
erase_jedec (flash);
if (*bios != (unsigned char ) 0xff) {
printf("ERASE FAILED\n");
return -1;
}
printf ("Programming Page: ");
for (i = 0; i < total_size/page_size; i++) {
printf ("%04d at address: 0x%08x", i, i * page_size);
write_page_jedec(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");
}
printf("\n");
protect_jedec (bios);
return(0);
}

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#ifndef __JEDEC_H__
#define __JEDEC_H__ 1
extern int probe_jedec (struct flashchip * flash);
extern int erase_jedec (struct flashchip * flash);
extern int write_jedec (struct flashchip * flash, unsigned char * buf);
extern __inline__ void toggle_ready_jedec (volatile char * dst)
{
unsigned int i = 0;
char tmp1, tmp2;
tmp1 = *dst & 0x40;
while (i++ < 0xFFFFFF) {
tmp2 = *dst & 0x40;
if (tmp1 == tmp2) {
break;
}
tmp1 = tmp2;
}
}
extern __inline__ void data_polling_jedec (volatile char * dst, char data)
{
unsigned int i = 0;
char tmp;
data &= 0x80;
while (i++ < 0xFFFFFF) {
tmp = *dst & 0x80;
if (tmp == data) {
break;
}
}
}
extern __inline__ void protect_jedec (volatile char * bios)
{
*(volatile char *) (bios + 0x5555) = 0xAA;
*(volatile char *) (bios + 0x2AAA) = 0x55;
*(volatile char *) (bios + 0x5555) = 0xA0;
usleep(200);
}
extern __inline__ void write_page_jedec (volatile char * bios, char * src, volatile char * dst,
int page_size)
{
int i;
*(volatile char *) (bios + 0x5555) = 0xAA;
*(volatile char *) (bios + 0x2AAA) = 0x55;
*(volatile char *) (bios + 0x5555) = 0xA0;
for (i = 0; i < page_size; i++) {
/* transfer data from source to destination */
*dst++ = *src++;
}
usleep(100);
toggle_ready_jedec(dst-1);
}
#endif /* !__JEDEC_H__ */

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/*
* m29f400bt.c: driver for programming JEDEC standard flash parts
*
*
* 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:
*
* $Id$
*/
#include "flash.h"
#include "m29f400bt.h"
int probe_m29f400bt (struct flashchip * flash)
{
volatile char * bios = flash->virt_addr;
unsigned char id1, id2;
*(volatile char *) (bios + 0xAAA) = 0xAA;
*(volatile char *) (bios + 0x555) = 0x55;
*(volatile char *) (bios + 0xAAA) = 0x90;
myusec_delay(10);
id1 = *(volatile unsigned char *) bios;
id2 = *(volatile unsigned char *) (bios + 0x02);
*(volatile char *) (bios + 0xAAA) = 0xAA;
*(volatile char *) (bios + 0x555) = 0x55;
*(volatile char *) (bios + 0xAAA) = 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;
}
int erase_m29f400bt (struct flashchip * flash)
{
volatile char * bios = flash->virt_addr;
*(volatile char *) (bios + 0xAAA) = 0xAA;
*(volatile char *) (bios + 0x555) = 0x55;
*(volatile char *) (bios + 0xAAA) = 0x80;
*(volatile char *) (bios + 0xAAA) = 0xAA;
*(volatile char *) (bios + 0x555) = 0x55;
*(volatile char *) (bios + 0xAAA) = 0x10;
myusec_delay(10);
toggle_ready_m29f400bt(bios);
return(0);
}
int block_erase_m29f400bt (volatile char * bios ,volatile char * dst)
{
*(volatile char *) (bios + 0xAAA) = 0xAA;
*(volatile char *) (bios + 0x555) = 0x55;
*(volatile char *) (bios + 0xAAA) = 0x80;
*(volatile char *) (bios + 0xAAA) = 0xAA;
*(volatile char *) (bios + 0x555) = 0x55;
//*(volatile char *) (bios + 0xAAA) = 0x10;
*dst = 0x30;
myusec_delay(10);
toggle_ready_m29f400bt(bios);
return(0);
}
int write_m29f400bt (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;
//erase_m29f400bt (flash);
printf ("Programming Page:\n ");
/*********************************
*Pages for M29F400BT:
* 16 0x7c000 0x7ffff TOP
* 8 0x7a000 0x7bfff
* 8 0x78000 0x79fff
* 32 0x70000 0x77fff
* 64 0x60000 0x6ffff
* 64 0x50000 0x5ffff
* 64 0x40000 0x4ffff
*---------------------------------
* 64 0x30000 0x3ffff
* 64 0x20000 0x2ffff
* 64 0x10000 0x1ffff
* 64 0x00000 0x0ffff BOTTOM
*********************************/
printf("total_size/page_size = %d\n",total_size/page_size);
for (i = 0; i < (total_size/page_size)-1; i++) {
printf("%04d at address: 0x%08x\n", i, i * page_size);
block_erase_m29f400bt(bios, bios + i * page_size);
write_page_m29f400bt(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");
}
printf("%04d at address: 0x%08x\n",7,0x70000);
block_erase_m29f400bt(bios , bios + 0x70000);
write_page_m29f400bt(bios,buf + 0x70000, bios + 0x70000, 32*1024);
printf("%04d at address: 0x%08x\n",8,0x78000);
block_erase_m29f400bt(bios , bios + 0x78000);
write_page_m29f400bt(bios,buf + 0x78000, bios + 0x78000, 8*1024);
printf("%04d at address: 0x%08x\n",9,0x7a000);
block_erase_m29f400bt(bios , bios + 0x7a000);
write_page_m29f400bt(bios,buf + 0x7a000, bios + 0x7a000, 8*1024);
printf("%04d at address: 0x%08x\n",10,0x7c000);
block_erase_m29f400bt(bios , bios + 0x7c000);
write_page_m29f400bt(bios,buf + 0x7c000, bios + 0x7c000, 16*1024);
printf("\n");
//protect_m29f400bt (bios);
return(0);
}
int write_linuxbios_m29f400bt (struct flashchip * flash, unsigned char * buf)
{
volatile char * bios = flash->virt_addr;
printf ("Programming Page:\n ");
/*********************************
*Pages for M29F400BT:
* 16 0x7c000 0x7ffff TOP
* 8 0x7a000 0x7bfff
* 8 0x78000 0x79fff
* 32 0x70000 0x77fff
* 64 0x60000 0x6ffff
* 64 0x50000 0x5ffff
* 64 0x40000 0x4ffff
*---------------------------------
* 64 0x30000 0x3ffff
* 64 0x20000 0x2ffff
* 64 0x10000 0x1ffff
* 64 0x00000 0x0ffff BOTTOM
*********************************/
printf("%04d at address: 0x%08x\n",7,0x00000);
block_erase_m29f400bt(bios , bios + 0x00000);
write_page_m29f400bt(bios,buf + 0x00000, bios + 0x00000, 64*1024);
printf("%04d at address: 0x%08x\n",7,0x10000);
block_erase_m29f400bt(bios , bios + 0x10000);
write_page_m29f400bt(bios,buf + 0x10000, bios + 0x10000, 64*1024);
printf("%04d at address: 0x%08x\n",7,0x20000);
block_erase_m29f400bt(bios , bios + 0x20000);
write_page_m29f400bt(bios,buf + 0x20000, bios + 0x20000, 64*1024);
printf("%04d at address: 0x%08x\n",7,0x30000);
block_erase_m29f400bt(bios , bios + 0x30000);
write_page_m29f400bt(bios,buf + 0x30000, bios + 0x30000, 64*1024);
printf("\n");
//protect_m29f400bt (bios);
return(0);
}

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#ifndef __M29F400BT_H__
#define __M29F400BT_H__ 1
#include <stdio.h>
extern int probe_m29f400bt (struct flashchip * flash);
extern int erase_m29f400bt (struct flashchip * flash);
extern int block_erase_m29f400bt (volatile char * bios, volatile char * dst);
extern int write_m29f400bt (struct flashchip * flash, unsigned char * buf);
extern int write_linuxbios_m29f400bt (struct flashchip * flash, unsigned char * buf);
extern __inline__ void toggle_ready_m29f400bt (volatile char * dst)
{
unsigned int i = 0;
char tmp1, tmp2;
tmp1 = *dst & 0x40;
while (i++ < 0xFFFFFF) {
tmp2 = *dst & 0x40;
if (tmp1 == tmp2) {
break;
}
tmp1 = tmp2;
}
}
extern __inline__ void data_polling_m29f400bt (volatile char * dst, unsigned char data)
{
unsigned int i = 0;
char tmp;
data &= 0x80;
while (i++ < 0xFFFFFF) {
tmp = *dst & 0x80;
if (tmp == data) {
break;
}
}
}
extern __inline__ void protect_m29f400bt (volatile char * bios)
{
*(volatile char *) (bios + 0xAAA) = 0xAA;
*(volatile char *) (bios + 0x555) = 0x55;
*(volatile char *) (bios + 0xAAA) = 0xA0;
usleep(200);
}
extern __inline__ void write_page_m29f400bt (volatile char * bios, char * src, volatile char * dst,
int page_size)
{
int i;
for (i = 0; i < page_size; i++) {
*(volatile char *) (bios + 0xAAA) = 0xAA;
*(volatile char *) (bios + 0x555) = 0x55;
*(volatile char *) (bios + 0xAAA) = 0xA0;
/* transfer data from source to destination */
*dst = *src;
//*(volatile char *) (bios) = 0xF0;
//usleep(5);
toggle_ready_m29f400bt(dst);
printf("Value in the flash at address %p = %#x, want %#x\n",(char *)(dst-bios), *dst, *src);
dst++;
src++;
}
}
#endif /* !__M29F400BT_H__ */

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/*
* msys_doc.c: driver for programming m-systems doc devices
*
*
* Copyright 2003 Niki W. Waibel <niki.waibel@gmx.net>
*
* 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.
*/
#include <stdio.h>
#include <unistd.h>
#include "flash.h"
#include "msys_doc.h"
static int doc_wait(volatile char *bios, int timeout);
static unsigned char doc_read_chipid(volatile char *bios);
static unsigned char doc_read_docstatus(volatile char *bios);
static unsigned char doc_read_cdsncontrol(volatile char *bios);
static void doc_write_cdsncontrol(volatile char *bios, unsigned char data);
int
probe_md2802(struct flashchip * flash)
{
volatile char *bios = flash->virt_addr;
unsigned char chipid;
#ifndef MSYSTEMS_DOC_NO_55AA_CHECKING
unsigned char id_0x55, id_0xAA;
#endif /* !MSYSTEMS_DOC_NO_55AA_CHECKING */
int i, toggle_a, toggle_b;
printf("%s:\n", __FUNCTION__);
printf("%s: *******************************\n", __FUNCTION__);
printf("%s: * THIS IS A PRE ALPHA VERSION *\n", __FUNCTION__);
printf("%s: * IN THE DEVELOPEMENT *********\n", __FUNCTION__);
printf("%s: * PROCESS RIGHT NOW. **********\n", __FUNCTION__);
printf("%s: *******************************\n", __FUNCTION__);
printf("%s: * IF YOU ARE NOT A DEVELOPER **\n", __FUNCTION__);
printf("%s: * THEN DO NOT TRY TO READ OR **\n", __FUNCTION__);
printf("%s: * WRITE TO THIS DEVICE ********\n", __FUNCTION__);
printf("%s: *******************************\n", __FUNCTION__);
printf("%s:\n", __FUNCTION__);
printf("%s: switching off reset mode ...\n", __FUNCTION__);
doc_write(0x85, bios, DOCControl);
doc_write(0x85, bios, DOCControl);
doc_read_4nop(bios);
if(doc_wait(bios, 5000))
return(-1);
printf("%s: switching off reset mode ... done\n", __FUNCTION__);
printf("%s:\n", __FUNCTION__);
printf("%s: switching off write protection ...\n", __FUNCTION__);
doc_write_cdsncontrol(bios, doc_read_cdsncontrol(bios)&(~0x08));
printf("%s: switching off write protection ... done\n", __FUNCTION__);
printf("%s:\n", __FUNCTION__);
chipid = doc_read_chipid(bios);
#ifndef MSYSTEMS_DOC_NO_55AA_CHECKING
id_0x55 = doc_read(bios, IPL_0x0000);
id_0xAA = doc_read(bios, IPL_0x0001);
#endif /* !MSYSTEMS_DOC_NO_55AA_CHECKING */
printf("%s: IPL_0x0000: 0x%02x\n", __FUNCTION__, id_0x55);
printf("%s: IPL_0x0001: 0x%02x\n", __FUNCTION__, id_0xAA);
printf("%s: IPL_0x0002: 0x%02x\n", __FUNCTION__,
doc_read(bios, IPL_0x0002));
printf("%s: IPL_0x0003: 0x%02x\n", __FUNCTION__,
doc_read(bios, IPL_0x0003));
printf("%s:\n", __FUNCTION__);
printf("%s: ChipID: 0x%02x\n", __FUNCTION__, chipid);
printf("%s: DOCStatus: 0x%02x\n", __FUNCTION__,
doc_read_docstatus(bios));
printf("%s: FloorSelect: 0x%02x\n", __FUNCTION__,
doc_read(bios, FloorSelect));
printf("%s: CDSNControl: 0x%02x\n", __FUNCTION__,
doc_read_cdsncontrol(bios));
printf("%s: CDSNDeviceSelect: 0x%02x\n", __FUNCTION__,
doc_read(bios, CDSNDeviceSelect));
printf("%s: ECCConfiguration: 0x%02x\n", __FUNCTION__,
doc_read(bios, ECCConfiguration));
printf("%s: CDSNSlowIO: 0x%02x\n", __FUNCTION__,
doc_read(bios, CDSNSlowIO));
printf("%s: ECCSyndrome0: 0x%02x\n", __FUNCTION__,
doc_read(bios, ECCSyndrome0));
printf("%s: ECCSyndrome1: 0x%02x\n", __FUNCTION__,
doc_read(bios, ECCSyndrome1));
printf("%s: ECCSyndrome2: 0x%02x\n", __FUNCTION__,
doc_read(bios, ECCSyndrome2));
printf("%s: ECCSyndrome3: 0x%02x\n", __FUNCTION__,
doc_read(bios, ECCSyndrome3));
printf("%s: ECCSyndrome4: 0x%02x\n", __FUNCTION__,
doc_read(bios, ECCSyndrome4));
printf("%s: ECCSyndrome5: 0x%02x\n", __FUNCTION__,
doc_read(bios, ECCSyndrome5));
printf("%s: AliasResolution: 0x%02x\n", __FUNCTION__,
doc_read(bios, AliasResolution));
printf("%s: ConfigurationInput: 0x%02x\n", __FUNCTION__,
doc_read(bios, ConfigurationInput));
printf("%s: ReadPipelineInitialization: 0x%02x\n", __FUNCTION__,
doc_read(bios, ReadPipelineInitialization));
printf("%s: LastDataRead: 0x%02x\n", __FUNCTION__,
doc_read(bios, LastDataRead));
printf("%s:\n", __FUNCTION__);
printf("%s: checking ECCConfiguration toggle bit\n", __FUNCTION__);
printf("%s:", __FUNCTION__);
toggle_a = toggle_b = 0;
for(i=0; i<10; i++)
{
unsigned char toggle = doc_toggle(bios);
printf(" 0x%02x", toggle);
if(i%2)
toggle_a += toggle;
else
toggle_b += toggle;
} /* for(i=0; i<10; i++) */
printf("\n%s: toggle result: %d/%d\n", __FUNCTION__, toggle_a, toggle_b);
if(chipid == flash->model_id
&& ((toggle_a==5 && toggle_b==0)||(toggle_a==0 && toggle_b==5))
#ifndef MSYSTEMS_DOC_NO_55AA_CHECKING
&& id_0x55 == 0x55 && id_0xAA == 0xaa
#endif /* !MSYSTEMS_DOC_NO_55AA_CHECKING */
)
{
return(1);
}
return(0);
} /* int probe_md2802(struct flashchip *flash) */
int
read_md2802(struct flashchip *flash, unsigned char *buf)
{
return(0);
} /* int read_md2802(struct flashchip *flash, unsigned char *buf) */
int
erase_md2802(struct flashchip *flash)
{
volatile char *bios = flash->virt_addr;
return(1);
*(volatile char *)(bios + 0x5555) = 0xAA;
*(volatile char *)(bios + 0x2AAA) = 0x55;
*(volatile char *)(bios + 0x5555) = 0x80;
*(volatile char *)(bios + 0x5555) = 0xAA;
*(volatile char *)(bios + 0x2AAA) = 0x55;
*(volatile char *)(bios + 0x5555) = 0x10;
} /* int erase_md2802(struct flashchip *flash) */
int
write_md2802(struct flashchip *flash, unsigned char *buf)
{
int i;
int total_size = flash->total_size *1024, page_size = flash->page_size;
volatile unsigned char * bios = flash->virt_addr;
return(1);
erase_md2802 (flash);
if (*bios != (unsigned char ) 0xff) {
printf("ERASE FAILED\n");
return -1;
}
printf ("Programming Page: ");
for (i = 0; i < total_size/page_size; i++) {
printf ("%04d at address: 0x%08x", i, i * page_size);
//write_page_md2802(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");
}
printf("\n");
//protect_md2802(bios);
} /* int write_md2802(struct flashchip *flash, char *buf) */
/*
wait timeout msec for doc to become ready
return:
0: ready
-1: timeout expired
*/
static int
doc_wait(volatile char *bios, int timeout)
{
int i = 20;
doc_read_4nop(bios);
while(_doc_busy(bios) && (i != 0))
{
usleep(timeout*1000/20);
i--;
}
doc_read_2nop(bios);
if(_doc_busy(bios))
{
doc_read_2nop(bios);
return(-1);
}
return(0);
} /* static int doc_wait(volatile char *bios, int timeout) */
static unsigned char
doc_read_docstatus(volatile char *bios)
{
doc_read(bios, CDSNSlowIO);
doc_read_2nop(bios);
return(doc_read(bios, _DOCStatus));
} /* static unsigned char doc_read_docstatus(volatile char *bios) */
static unsigned char
doc_read_chipid(volatile char *bios)
{
doc_read(bios, CDSNSlowIO);
doc_read_2nop(bios);
return(doc_read(bios, _ChipID));
} /* static unsigned char doc_read_chipid(volatile char *bios) */
static unsigned char
doc_read_cdsncontrol(volatile char *bios)
{
unsigned char value;
/* the delays might be necessary when reading the busy bit,
but because a read to this reg reads the busy bit
anyway we better do this delays... */
doc_read_4nop(bios);
value = doc_read(bios, _CDSNControl);
doc_read_2nop(bios);
return(value);
} /* static unsigned char doc_read_chipid(volatile char *bios) */
static void
doc_write_cdsncontrol(volatile char *bios, unsigned char data)
{
doc_write(data, bios, _CDSNControl);
doc_read_4nop(bios);
} /* static void doc_write_chipid(volatile char *bios, unsigned char data) */

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/*
* msys_doc.h: header file of msys_doc.c
*
*
* Copyright 2003 Niki W. Waibel <niki.waibel@gmx.net>
*
* 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.
*/
#ifndef __MSYS_DOC_H__
#define __MSYS_DOC_H__ 1
/* idea from include/linux/mtd/doc2000.h */
/* registers with __ should not be read/written directly */
#define MSYSTEMS_DOC_R__ChipID 0x1000
#define MSYSTEMS_DOC_R__DOCStatus 0x1001
#define MSYSTEMS_DOC_W_DOCControl 0x1002
#define MSYSTEMS_DOC_R_FloorSelect 0x1003
#define MSYSTEMS_DOC_W_FloorSelect 0x1003
#define MSYSTEMS_DOC_R__CDSNControl 0x1004
#define MSYSTEMS_DOC_W__CDSNControl 0x1004
#define MSYSTEMS_DOC_R_CDSNDeviceSelect 0x1005
#define MSYSTEMS_DOC_W_CDSNDeviceSelect 0x1005
#define MSYSTEMS_DOC_R_ECCConfiguration 0x1006
#define MSYSTEMS_DOC_W_ECCConfiguration 0x1006
#define MSYSTEMS_DOC_R_CDSNSlowIO 0x100d
#define MSYSTEMS_DOC_W_CDSNSlowIO 0x100d
#define MSYSTEMS_DOC_R_ECCSyndrome0 0x1010
#define MSYSTEMS_DOC_R_ECCSyndrome1 0x1011
#define MSYSTEMS_DOC_R_ECCSyndrome2 0x1012
#define MSYSTEMS_DOC_R_ECCSyndrome3 0x1013
#define MSYSTEMS_DOC_R_ECCSyndrome4 0x1014
#define MSYSTEMS_DOC_R_ECCSyndrome5 0x1015
#define MSYSTEMS_DOC_R_AliasResolution 0x101b
#define MSYSTEMS_DOC_W_AliasResolution 0x101b
#define MSYSTEMS_DOC_R_ConfigurationInput 0x101c
#define MSYSTEMS_DOC_W_ConfigurationInput 0x101c
#define MSYSTEMS_DOC_R_ReadPipelineInitialization 0x101d
#define MSYSTEMS_DOC_W_WritePipelineTermination 0x101e
#define MSYSTEMS_DOC_R_LastDataRead 0x101f
#define MSYSTEMS_DOC_W_LastDataRead 0x101f
#define MSYSTEMS_DOC_R_NOP 0x1020
#define MSYSTEMS_DOC_W_NOP 0x1020
#define MSYSTEMS_DOC_R_IPL_0x0000 0x0000
#define MSYSTEMS_DOC_R_IPL_0x0001 0x0001
#define MSYSTEMS_DOC_R_IPL_0x0002 0x0002
#define MSYSTEMS_DOC_R_IPL_0x0003 0x0003
#define MSYSTEMS_DOC_R_CDSNIO_BASE 0x0800
#define MSYSTEMS_DOC_W_CDSNIO_BASE 0x0800
#define doc_read(base,reg) \
(*(volatile unsigned char *)(base + MSYSTEMS_DOC_R_##reg))
#define doc_read_nop(base) \
doc_read(base, NOP)
#define doc_read_2nop(base) \
{ doc_read_nop(base); doc_read_nop(base); }
#define doc_read_4nop(base) \
{ doc_read_2nop(base); doc_read_2nop(base); }
#define doc_write(data,base,reg) \
(*(volatile unsigned char *)(base + MSYSTEMS_DOC_W_##reg)) = data
#define doc_write_nop(base) \
doc_write(0, base, NOP)
#define doc_write_2nop(base) \
{ doc_write_nop(base); doc_write_nop(base); }
#define doc_write_4nop(base) \
{ doc_write_2nop(base); doc_write_2nop(base); }
#define _doc_busy(base) /* 0: ready; -1: busy */ \
( ((doc_read(base, _CDSNControl) & 0x80) >> 7) - 1)
#define doc_toggle(base) /* 0, 1, 0, 1, 0, 1, ... if a doc is present */ \
( (doc_read(base, ECCConfiguration) & 0x04) >> 2 )
extern int probe_md2802(struct flashchip *flash);
extern int read_md2802(struct flashchip *flash, unsigned char *buf);
extern int erase_md2802(struct flashchip *flash);
extern int write_md2802(struct flashchip *flash, unsigned char *buf);
#endif /* !__MSYS_DOC_H__ */

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/*
* mx29f002.c: driver for MXIC MX29F002 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:
* MX29F002/002N data sheet
*
* $Id$
*/
#include <stdio.h>
#include "flash.h"
#include "jedec.h"
#include "mx29f002.h"
int probe_29f002 (struct flashchip * flash)
{
volatile char * bios = flash->virt_addr;
unsigned char id1, id2;
*(bios + 0x5555) = 0xAA;
*(bios + 0x2AAA) = 0x55;
*(bios + 0x5555) = 0x90;
id1 = *(volatile unsigned char *) bios;
id2 = *(volatile unsigned char *) (bios + 0x01);
*bios = 0xF0;
myusec_delay(10);
printf("%s: id1 %d, id2 %d\n", __FUNCTION__, id1, id2);
if (id1 == flash->manufacture_id && id2 == flash->model_id)
return 1;
return 0;
}
int erase_29f002 (struct flashchip * flash)
{
volatile char * bios = flash->virt_addr;
*(bios + 0x555) = 0xF0;
*(bios + 0x555) = 0xAA;
*(bios + 0x2AA) = 0x55;
*(bios + 0x555) = 0x80;
*(bios + 0x555) = 0xAA;
*(bios + 0x2AA) = 0x55;
*(bios + 0x555) = 0x10;
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_29f002 (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_29f002(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);
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");
return(0);
}

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#ifndef __MX29F002_H__
#define __MX29F002_H__ 1
extern int probe_29f002 (struct flashchip * flash);
extern int erase_29f002 (struct flashchip * flash);
extern int write_29f002 (struct flashchip * flash, unsigned char * buf);
#endif /* !__MX29F002_H__ */

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/*
* sst28sf040.c: driver for SST28SF040C 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, SST28SF040 data sheet
*
* $Id$
*/
#include <stdio.h>
#include "flash.h"
#include "jedec.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_28sf040 (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_28sf040 (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);
}
static __inline__ int erase_sector_28sf040 (volatile char * bios, unsigned long address)
{
*bios = AUTO_PG_ERASE1;
*(bios + address) = AUTO_PG_ERASE2;
/* wait for Toggle bit ready */
toggle_ready_jedec(bios);
return(0);
}
static __inline__ int write_sector_28sf040(volatile char * bios, unsigned char * src,
volatile unsigned char * dst, unsigned int page_size)
{
int i;
for (i = 0; i < page_size; i++) {
/* transfer data from source to destination */
if (*src == 0xFF) {
dst++, src++;
/* If the data is 0xFF, don't program it */
continue;
}
/*issue AUTO PROGRAM command */
*dst = AUTO_PGRM;
*dst++ = *src++;
/* wait for Toggle bit ready */
toggle_ready_jedec(bios);
}
return(0);
}
int probe_28sf040 (struct flashchip * flash)
{
volatile char * bios = flash->virt_addr;
unsigned char id1, id2, tmp;
/* save the value at the beginning of the Flash */
tmp = *bios;
*bios = RESET;
myusec_delay(10);
*bios = READ_ID;
myusec_delay(10);
id1 = *(volatile unsigned char *) bios;
myusec_delay(10);
id2 = *(volatile unsigned char *) (bios + 0x01);
*bios = RESET;
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;
/* if there is no SST28SF040, restore the original value */
*bios = tmp;
return 0;
}
int erase_28sf040 (struct flashchip * flash)
{
volatile char * bios = flash->virt_addr;
unprotect_28sf040 (bios);
*bios = CHIP_ERASE;
*bios = CHIP_ERASE;
protect_28sf040 (bios);
myusec_delay(10);
toggle_ready_jedec(bios);
return(0);
}
int write_28sf040 (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_28sf040 (bios);
printf ("Programming Page: ");
for (i = 0; i < total_size/page_size; i++) {
/* erase the page before programming */
erase_sector_28sf040(bios, i * page_size);
/* write to the sector */
printf ("%04d at address: 0x%08x", i, i * page_size);
write_sector_28sf040(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");
}
printf("\n");
protect_28sf040 (bios);
return(0);
}

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#ifndef __SST28SF040_H__
#define __SST28SF040_H__
extern int probe_28sf040 (struct flashchip * flash);
extern int erase_28sf040 (struct flashchip * flash);
extern int write_28sf040 (struct flashchip * flash, unsigned char * buf);
#endif /* !__SST28SF040_H__ */

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/*
* sst39sf020.c: driver for SST28SF040C 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, SST28SF040 data sheet
*
* $Id$
*/
#include <stdio.h>
#include "flash.h"
#include "jedec.h"
#include "sst39sf020.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_39sf020 (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_39sf020 (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);
}
static __inline__ int erase_sector_39sf020 (volatile char * bios, unsigned long address)
{
*bios = AUTO_PG_ERASE1;
*(bios + address) = AUTO_PG_ERASE2;
/* wait for Toggle bit ready */
toggle_ready_jedec(bios);
return(0);
}
static __inline__ int write_sector_39sf020(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);
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_39sf020 (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;
}
int erase_39sf020 (struct flashchip * flash)
{
volatile unsigned char * bios = flash->virt_addr;
volatile unsigned char *Temp;
/* Issue the Sector Erase command to 39SF020 */
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_39sf020 (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_39sf020 (bios);
erase_39sf020(flash);
printf ("Programming Page: ");
for (i = 0; i < total_size/page_size; i++) {
/* erase the page before programming */
//erase_sector_39sf020(bios, i * page_size);
/* write to the sector */
printf ("%04d at address: 0x%08x", i, i * page_size);
write_sector_39sf020(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");
fflush(stdout);
}
printf("\n");
// protect_39sf020 (bios);
return(0);
}

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#ifndef __SST39SF020_H__
#define __SST39SF020_H__ 1
extern int probe_39sf020 (struct flashchip * flash);
extern int erase_39sf020 (struct flashchip * flash);
extern int write_39sf020 (struct flashchip * flash, unsigned char * buf);
#endif /* !__SST39SF020_H__ */

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/*
* w49f002u.c: driver for Winbond 49F002U 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:
* W49F002U data sheet
*
* $Id
*/
#include <stdio.h>
#include "flash.h"
#include "jedec.h"
#include "w49f002u.h"
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;
id1 = *(volatile unsigned char *) bios;
id2 = *(volatile unsigned char *) (bios + 0x01);
*bios = 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;
}
int erase_49f002 (struct flashchip * flash)
{
volatile char * bios = flash->virt_addr;
*(bios + 0x5555) = 0xAA;
*(bios + 0x2AAA) = 0x55;
*(bios + 0x5555) = 0x80;
*(bios + 0x5555) = 0xAA;
*(bios + 0x2AAA) = 0x55;
*(bios + 0x5555) = 0x10;
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);
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");
return(0);
}

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#ifndef __W49F002U_H__
#define __W49F002U_H__ 1
extern int probe_49f002 (struct flashchip * flash);
extern int erase_49f002 (struct flashchip * flash);
extern int write_49f002 (struct flashchip * flash, unsigned char * buf);
#endif /* !__W49F002U_H__ */