mirror of
https://review.coreboot.org/flashrom.git
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Can now burn 82802ab
Corresponding to coreboot v1 svn r633.
This commit is contained in:
Ronald G. Minnich
parent
6041bcda7a
commit
5643942750
195
82802ab.c
Normal file
195
82802ab.c
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@ -0,0 +1,195 @@
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/*
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* 82802ab.c: driver for programming JEDEC standard flash parts
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*
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*
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* Copyright 2000 Silicon Integrated System Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*
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* Reference: http://www.intel.com/design/chipsets/datashts/290658.htm
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*
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* $Id$
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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#include <sys/io.h>
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#include <unistd.h>
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#include <stdio.h>
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#include "flash.h"
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#include "82802ab.h"
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// I need that Berkeley bit-map printer
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void print_82802ab_status(unsigned char status)
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{
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printf("%s", status & 0x80 ? "Ready:" : "Busy:");
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printf("%s", status & 0x40 ? "BE SUSPEND:" : "BE RUN/FINISH:");
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printf("%s", status & 0x20 ? "BE ERROR:" : "BE OK:");
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printf("%s", status & 0x10 ? "PROG ERR:" : "PROG OK:");
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printf("%s", status & 0x8 ? "VP ERR:" : "VPP OK:");
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printf("%s", status & 0x4 ? "PROG SUSPEND:" : "PROG RUN/FINISH:");
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printf("%s", status & 0x2 ? "WP|TBL#|WP#,ABORT:" : "UNLOCK:");
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}
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int probe_82802ab (struct flashchip * flash)
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{
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volatile unsigned char * bios = flash->virt_addr;
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unsigned char id1, id2;
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#if 0
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*(volatile unsigned char *) (bios + 0x5555) = 0xAA;
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*(volatile unsigned char *) (bios + 0x2AAA) = 0x55;
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*(volatile unsigned char *) (bios + 0x5555) = 0x90;
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#endif
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*bios = 0xff;
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myusec_delay(10);
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*bios = 0x90;
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myusec_delay(10);
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id1 = *(volatile unsigned char *) bios;
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id2 = *(volatile unsigned char *) (bios + 0x01);
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#if 1
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*(volatile unsigned char *) (bios + 0x5555) = 0xAA;
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*(volatile unsigned char *) (bios + 0x2AAA) = 0x55;
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*(volatile unsigned char *) (bios + 0x5555) = 0xF0;
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#endif
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myusec_delay(10);
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printf(__FUNCTION__ "id1 %d, id2 %d\n", id1, id2);
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if (id1 == flash->manufacture_id && id2 == flash->model_id) {
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size_t size = flash->total_size * 1024;
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// we need to mmap the write-protect space.
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bios = mmap (0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
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flash->fd_mem, (off_t) (0 - 0x400000 - size));
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if (bios == MAP_FAILED) {
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// it's this part but we can't map it ...
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perror("Error MMAP /dev/mem");
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exit(1);
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}
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flash->virt_addr_2 = bios;
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return 1;
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}
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return 0;
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}
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unsigned char wait_82802ab(volatile unsigned char * bios)
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{
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unsigned char status;
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unsigned char id1, id2;
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*bios = 0x70;
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if ((*bios & 0x80) == 0) { // it's busy
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while ((*bios & 0x80) == 0)
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;
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}
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status = *bios;
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// put another command to get out of status register mode
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*bios = 0x90;
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myusec_delay(10);
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id1 = *(volatile unsigned char *) bios;
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id2 = *(volatile unsigned char *) (bios + 0x01);
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// this is needed to jam it out of "read id" mode
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*(volatile unsigned char *) (bios + 0x5555) = 0xAA;
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*(volatile unsigned char *) (bios + 0x2AAA) = 0x55;
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*(volatile unsigned char *) (bios + 0x5555) = 0xF0;
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return status;
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}
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int erase_82802ab_block(struct flashchip *flash, int offset)
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{
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volatile unsigned char * bios = flash->virt_addr + offset;
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volatile unsigned char *wrprotect = flash->virt_addr_2 + offset + 2;
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unsigned char status;
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// clear status register
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*bios = 0x50;
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printf("Erase at %p\n", bios);
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// clear write protect
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printf("write protect is at %p\n", (wrprotect));
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printf("write protect is 0x%x\n", *(wrprotect));
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*(wrprotect) = 0;
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printf("write protect is 0x%x\n", *(wrprotect));
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// now start it
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*(volatile unsigned char *) (bios) = 0x20;
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*(volatile unsigned char *) (bios) = 0xd0;
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myusec_delay(10);
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// now let's see what the register is
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status = wait_82802ab(flash->virt_addr);
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print_82802ab_status(status);
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printf("DONE BLOCK 0x%x\n", offset);
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}
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int erase_82802ab (struct flashchip * flash)
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{
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int i;
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volatile unsigned char * bios = flash->virt_addr;
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unsigned int total_size = flash->total_size * 1024;
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printf("total_size is %d; flash->page_size is %d\n",
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total_size, flash->page_size);
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for(i = 0; i < total_size; i += flash->page_size)
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erase_82802ab_block(flash, i);
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printf("DONE ERASE\n");
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}
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void write_page_82802ab (volatile char * bios, char * src, volatile char * dst,
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int page_size)
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{
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int i;
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for (i = 0; i < page_size; i++) {
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/* transfer data from source to destination */
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*dst = 0x40;
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*dst++ = *src++;
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wait_82802ab(bios);
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}
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}
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int write_82802ab (struct flashchip * flash, char * buf)
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{
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int i;
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int total_size = flash->total_size *1024, page_size = flash->page_size;
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volatile unsigned char * bios = flash->virt_addr;
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erase_82802ab (flash);
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if (*bios != 0xff) {
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printf("ERASE FAILED\n");
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return -1;
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}
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printf ("Programming Page: ");
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for (i = 0; i < total_size/page_size; i++) {
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printf ("%04d at address: 0x%08x", i, i * page_size);
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write_page_82802ab(bios, buf + i * page_size, bios + i * page_size,
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page_size);
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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");
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}
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printf("\n");
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protect_82802ab (bios);
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}
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44
82802ab.h
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44
82802ab.h
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@ -0,0 +1,44 @@
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extern int probe_82802ab (struct flashchip * flash);
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extern int erase_82802ab (struct flashchip * flash);
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extern int write_82802ab (struct flashchip * flash, char * buf);
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extern __inline__ void toggle_ready_82802ab (volatile char * dst)
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{
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unsigned int i = 0;
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char tmp1, tmp2;
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tmp1 = *dst & 0x40;
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while (i++ < 0xFFFFFF) {
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tmp2 = *dst & 0x40;
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if (tmp1 == tmp2) {
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break;
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}
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tmp1 = tmp2;
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}
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}
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extern __inline__ void data_polling_82802ab (volatile char * dst, char data)
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{
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unsigned int i = 0;
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char tmp;
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data &= 0x80;
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while (i++ < 0xFFFFFF) {
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tmp = *dst & 0x80;
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if (tmp == data) {
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break;
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}
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}
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}
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extern __inline__ void protect_82802ab (volatile char * bios)
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{
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*(volatile char *) (bios + 0x5555) = 0xAA;
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*(volatile char *) (bios + 0x2AAA) = 0x55;
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*(volatile char *) (bios + 0x5555) = 0xA0;
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usleep(200);
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}
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1
Makefile
1
Makefile
@ -1,4 +1,5 @@
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OBJS = jedec.o sst28sf040.o am29f040b.o mx29f002.c sst39sf020.o m29f400bt.o
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OBJS += 82802ab.o
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CC = gcc -O2 -g
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all: ${OBJS}
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2
flash.h
2
flash.h
@ -13,6 +13,8 @@ struct flashchip {
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int (*probe) (struct flashchip * flash);
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int (*erase) (struct flashchip * flash);
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int (*write) (struct flashchip * flash, char * buf);
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int fd_mem;
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volatile char *virt_addr_2;
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};
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#define AMD_ID 0x01
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@ -36,6 +36,7 @@
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#include "flash.h"
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#include "jedec.h"
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#include "m29f400bt.h"
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#include "82802ab.h"
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struct flashchip flashchips[] = {
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{"Am29F040B", AMD_ID, AM_29F040B, NULL, 512, 64*1024,
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@ -56,6 +57,8 @@ struct flashchip flashchips[] = {
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probe_jedec, erase_jedec, write_jedec},
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{"M29F400BT", ST_ID, ST_M29F400BT , NULL, 512, 64*1024,
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probe_m29f400bt, erase_m29f400bt, write_linuxbios_m29f400bt},
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{"82802ab", 137, 173 , NULL, 512, 64*1024,
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probe_82802ab, erase_82802ab, write_82802ab},
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{NULL,}
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};
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@ -134,6 +137,7 @@ struct flashchip * probe_flash(struct flashchip * flash)
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exit(1);
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}
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flash->virt_addr = bios;
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flash->fd_mem = fd_mem;
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if (flash->probe(flash) == 1) {
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printf ("%s found at physical address: 0x%lx\n",
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6
jedec.c
6
jedec.c
@ -74,9 +74,13 @@ int write_jedec (struct flashchip * flash, char * buf)
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{
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int i;
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int total_size = flash->total_size *1024, page_size = flash->page_size;
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volatile char * bios = flash->virt_addr;
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volatile unsigned char * bios = flash->virt_addr;
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erase_jedec (flash);
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if (*bios != (unsigned char ) 0xff) {
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printf("ERASE FAILED\n");
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return -1;
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}
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printf ("Programming Page: ");
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for (i = 0; i < total_size/page_size; i++) {
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printf ("%04d at address: 0x%08x", i, i * page_size);
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