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