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e60fd35182
This Corresponding to flashrom svn r71 and coreboot v2 svn r2494. will detect any improper erase, closes #31 Signed-off-by: Stefan Reinauer <stepan@coresystems.de> Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
119 lines
3.2 KiB
C
119 lines
3.2 KiB
C
/*
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* adapted from the Intel FW hub stuff for 82802ax 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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#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 <stdlib.h>
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#include "flash.h"
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#include "jedec.h"
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#include "sst_fwhub.h"
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// I need that Berkeley bit-map printer
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void print_sst_fwhub_status(uint8_t 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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/* probe_jedec works fine for probing */
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int probe_sst_fwhub(struct flashchip *flash)
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{
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volatile uint8_t *bios;
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size_t size = flash->total_size * 1024;
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if (probe_jedec(flash) == 0)
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return 0;
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bios = mmap(0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
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flash->fd_mem, (off_t) (0xFFFFFFFF - 0x400000 - size + 1));
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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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int erase_sst_fwhub_block(struct flashchip *flash, int offset)
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{
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volatile uint8_t *wrprotect = flash->virt_addr_2 + offset + 2;
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// clear write protect
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*(wrprotect) = 0;
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erase_block_jedec(flash->virt_addr, offset);
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toggle_ready_jedec(flash->virt_addr);
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return (0);
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}
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int erase_sst_fwhub(struct flashchip *flash)
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{
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int i;
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unsigned int total_size = flash->total_size * 1024;
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for (i = 0; i < total_size; i += flash->page_size)
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erase_sst_fwhub_block(flash, i);
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return (0);
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}
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int write_sst_fwhub(struct flashchip *flash, uint8_t *buf)
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{
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int i;
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int total_size = flash->total_size * 1024, page_size =
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flash->page_size;
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volatile uint8_t *bios = flash->virt_addr;
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// FIXME: We want block wide erase instead of ironing the whole chip
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erase_sst_fwhub(flash);
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// dumb check if erase was successful.
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for (i=0; i < total_size; i++) {
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if (bios[i] != 0xff) {
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printf("ERASE FAILED\n");
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return -1;
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}
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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_sector_jedec(bios, buf + i * page_size,
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bios + i * page_size, 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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return (0);
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}
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