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support for sst firmware hub

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git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1651 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Ronald G. Minnich
2004-09-30 16:37:01 +00:00
parent 1b41f6b480
commit 2b763af4ca
6 changed files with 261 additions and 2 deletions
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178
util/flash_and_burn/sst_fwhub.c Normal file
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/*
* adapted from the Intel FW hub stuff for 82802ax 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.
*
*
* $Id$
*/
#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 "jedec.h"
#include "sst_fwhub.h"
// I need that Berkeley bit-map printer
void print_sst_fwhub_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:");
}
/* probe_jedec works fine for probing */
int probe_sst_fwhub(struct flashchip *flash)
{
volatile unsigned char *bios = flash->virt_addr;
unsigned char id1, id2;
size_t size = flash->total_size * 1024;
/* Issue JEDEC Product ID Entry command */
*(volatile char *) (bios + 0x5555) = 0xAA;
myusec_delay(10);
*(volatile char *) (bios + 0x2AAA) = 0x55;
myusec_delay(10);
*(volatile char *) (bios + 0x5555) = 0x90;
myusec_delay(10);
/* Read product ID */
id1 = *(volatile unsigned char *) bios;
id2 = *(volatile unsigned char *) (bios + 0x01);
/* Issue JEDEC Product ID Exit command */
*(volatile char *) (bios + 0x5555) = 0xAA;
myusec_delay(10);
*(volatile char *) (bios + 0x2AAA) = 0x55;
myusec_delay(10);
*(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 0;
myusec_delay(10);
// 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;
}
unsigned char wait_sst_fwhub(volatile unsigned char *bios)
{
toggle_ready_jedec(bios);
return 0;
}
int erase_sst_fwhub_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
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));
erase_block_jedec(flash->virt_addr, offset);
status = wait_sst_fwhub(flash->virt_addr);
//print_sst_fwhub_status(status);
printf("DONE BLOCK 0x%x\n", offset);
return (0);
}
int erase_sst_fwhub(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_sst_fwhub_block(flash, i);
printf("DONE ERASE\n");
return (0);
}
void write_page_sst_fwhub(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 */
write_byte_program_jedec(bios, src, dst);
src++;
dst++;
}
}
int write_sst_fwhub(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_sst_fwhub(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_sst_fwhub(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_sst_fwhub(bios);
return (0);
}