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coreboot-kgpe-d16/util/flashrom/flashrom.c

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/*
* This file is part of the flashrom project.
*
* Copyright (C) 2000 Silicon Integrated System Corporation
* Copyright (C) 2004 Tyan Corp <yhlu@tyan.com>
* Copyright (C) 2005-2007 coresystems GmbH
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <errno.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <getopt.h>
#include <pci/pci.h>
/* for iopl */
#if defined (__sun) && (defined(__i386) || defined(__amd64))
#include <strings.h>
#include <sys/sysi86.h>
#include <sys/psw.h>
#include <asm/sunddi.h>
#endif
#include "flash.h"
char *chip_to_probe = NULL;
struct pci_access *pacc; /* For board and chipset_enable */
int exclude_start_page, exclude_end_page;
int force = 0, verbose = 0;
int fd_mem;
struct pci_dev *pci_dev_find(uint16_t vendor, uint16_t device)
{
struct pci_dev *temp;
struct pci_filter filter;
pci_filter_init(NULL, &filter);
filter.vendor = vendor;
filter.device = device;
for (temp = pacc->devices; temp; temp = temp->next)
if (pci_filter_match(&filter, temp))
return temp;
return NULL;
}
struct pci_dev *pci_card_find(uint16_t vendor, uint16_t device,
uint16_t card_vendor, uint16_t card_device)
{
struct pci_dev *temp;
struct pci_filter filter;
pci_filter_init(NULL, &filter);
filter.vendor = vendor;
filter.device = device;
for (temp = pacc->devices; temp; temp = temp->next)
if (pci_filter_match(&filter, temp)) {
if ((card_vendor == pci_read_word(temp, 0x2C)) &&
(card_device == pci_read_word(temp, 0x2E)))
return temp;
}
return NULL;
}
int map_flash_registers(struct flashchip *flash)
{
volatile uint8_t *registers;
size_t size = flash->total_size * 1024;
registers = mmap(0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
fd_mem, (off_t) (0xFFFFFFFF - 0x400000 - size + 1));
if (registers == MAP_FAILED) {
perror("Can't mmap registers using " MEM_DEV);
exit(1);
}
flash->virtual_registers = registers;
return 0;
}
struct flashchip *probe_flash(struct flashchip *flash)
{
volatile uint8_t *bios;
unsigned long flash_baseaddr, size;
while (flash->name != NULL) {
if (chip_to_probe && strcmp(flash->name, chip_to_probe) != 0) {
flash++;
continue;
}
printf_debug("Probing for %s, %d KB\n",
flash->name, flash->total_size);
size = flash->total_size * 1024;
#ifdef TS5300
// FIXME: Wrong place for this decision
// FIXME: This should be autodetected. It is trivial.
flash_baseaddr = 0x9400000;
#else
flash_baseaddr = (0xffffffff - size + 1);
#endif
/* If getpagesize() > size ->
* "Can't mmap memory using /dev/mem: Invalid argument"
* This should never happen as we don't support any flash chips
* smaller than 4k or 8k (yet).
*/
if (getpagesize() > size) {
size = getpagesize();
printf("WARNING: size: %d -> %ld (page size)\n",
flash->total_size * 1024, (unsigned long)size);
}
bios = mmap(0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
fd_mem, (off_t) flash_baseaddr);
if (bios == MAP_FAILED) {
perror("Can't mmap memory using " MEM_DEV);
exit(1);
}
flash->virtual_memory = bios;
if (flash->probe(flash) == 1) {
printf("%s found at physical address 0x%lx.\n",
flash->name, flash_baseaddr);
return flash;
}
munmap((void *)bios, size);
flash++;
}
return NULL;
}
int verify_flash(struct flashchip *flash, uint8_t *buf)
{
int idx;
int total_size = flash->total_size * 1024;
volatile uint8_t *bios = flash->virtual_memory;
printf("Verifying flash... ");
if (verbose)
printf("address: 0x00000000\b\b\b\b\b\b\b\b\b\b");
for (idx = 0; idx < total_size; idx++) {
if (verbose && ((idx & 0xfff) == 0xfff))
printf("0x%08x", idx);
if (*(bios + idx) != *(buf + idx)) {
if (verbose) {
printf("0x%08x ", idx);
}
printf("FAILED!\n");
return 1;
}
if (verbose && ((idx & 0xfff) == 0xfff))
printf("\b\b\b\b\b\b\b\b\b\b");
}
if (verbose)
printf("\b\b\b\b\b\b\b\b\b\b ");
printf("VERIFIED. \n");
return 0;
}
void usage(const char *name)
{
printf("usage: %s [-rwvEVfh] [-c chipname] [-s exclude_start]\n", name);
printf(" [-e exclude_end] [-m vendor:part] [-l file.layout] [-i imagename] [file]\n");
printf
(" -r | --read: read flash and save into file\n"
" -w | --write: write file into flash\n"
" -v | --verify: verify flash against file\n"
" -E | --erase: erase flash device\n"
" -V | --verbose: more verbose output\n"
" -c | --chip <chipname>: probe only for specified flash chip\n"
" -s | --estart <addr>: exclude start position\n"
" -e | --eend <addr>: exclude end postion\n"
" -m | --mainboard <vendor:part>: override mainboard settings\n"
" -f | --force: force write without checking image\n"
" -l | --layout <file.layout>: read rom layout from file\n"
" -i | --image <name>: only flash image name from flash layout\n"
"\n" " If no file is specified, then all that happens\n"
" is that flash info is dumped.\n\n");
exit(1);
}
int main(int argc, char *argv[])
{
uint8_t *buf;
unsigned long size;
FILE *image;
struct flashchip *flash;
int opt;
int option_index = 0;
int read_it = 0, write_it = 0, erase_it = 0, verify_it = 0;
int ret = 0;
static struct option long_options[] = {
{"read", 0, 0, 'r'},
{"write", 0, 0, 'w'},
{"erase", 0, 0, 'E'},
{"verify", 0, 0, 'v'},
{"chip", 1, 0, 'c'},
{"estart", 1, 0, 's'},
{"eend", 1, 0, 'e'},
{"mainboard", 1, 0, 'm'},
{"verbose", 0, 0, 'V'},
{"force", 0, 0, 'f'},
{"layout", 1, 0, 'l'},
{"image", 1, 0, 'i'},
{"help", 0, 0, 'h'},
{0, 0, 0, 0}
};
char *filename = NULL;
unsigned int exclude_start_position = 0, exclude_end_position = 0; // [x,y)
char *tempstr = NULL, *tempstr2 = NULL;
if (argc > 1) {
/* Yes, print them. */
int i;
printf_debug("The arguments are:\n");
for (i = 1; i < argc; ++i)
printf_debug("%s\n", argv[i]);
}
setbuf(stdout, NULL);
while ((opt = getopt_long(argc, argv, "rwvVEfc:s:e:m:l:i:h",
long_options, &option_index)) != 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;
case 'V':
verbose = 1;
break;
case 'E':
erase_it = 1;
break;
case 's':
tempstr = strdup(optarg);
sscanf(tempstr, "%x", &exclude_start_position);
break;
case 'e':
tempstr = strdup(optarg);
sscanf(tempstr, "%x", &exclude_end_position);
break;
case 'm':
tempstr = strdup(optarg);
strtok(tempstr, ":");
tempstr2 = strtok(NULL, ":");
if (tempstr2) {
lb_vendor = tempstr;
lb_part = tempstr2;
} else {
printf("warning: ignored wrong format of"
" mainboard: %s\n", tempstr);
}
break;
case 'f':
force = 1;
break;
case 'l':
tempstr = strdup(optarg);
if (read_romlayout(tempstr))
exit(1);
break;
case 'i':
tempstr = strdup(optarg);
find_romentry(tempstr);
break;
case 'h':
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++];
/* First get full io access */
#if defined (__sun) && (defined(__i386) || defined(__amd64))
if (sysi86(SI86V86, V86SC_IOPL, PS_IOPL) != 0) {
#else
if (iopl(3) != 0) {
#endif
fprintf(stderr, "ERROR: iopl failed: \"%s\"\n",
strerror(errno));
exit(1);
}
/* Initialize PCI access for flash enables */
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 */
/* Open the memory device. A lot of functions need it */
if ((fd_mem = open(MEM_DEV, O_RDWR)) < 0) {
perror("Error: Can not access memory using " MEM_DEV
". You need to be root.");
exit(1);
}
myusec_calibrate_delay();
/* We look at the lbtable first to see if we need a
* mainboard specific flash enable sequence.
*/
linuxbios_init();
/* try to enable it. Failure IS an option, since not all motherboards
* really need this to be done, etc., etc.
*/
ret = chipset_flash_enable();
if (ret == -2) {
printf("WARNING: No chipset found. Flash detection "
"will most likely fail.\n");
}
board_flash_enable(lb_vendor, lb_part);
if ((flash = probe_flash(flashchips)) == NULL) {
printf("No EEPROM/flash device found.\n");
// FIXME: flash writes stay enabled!
exit(1);
}
printf("Flash part is %s (%d KB).\n", flash->name, flash->total_size);
if (!(read_it | write_it | verify_it | erase_it)) {
printf("No operations were specified.\n");
// FIXME: flash writes stay enabled!
exit(1);
}
if (!filename && !erase_it) {
printf("Error: No filename specified.\n");
// FIXME: flash writes stay enabled!
exit(1);
}
size = flash->total_size * 1024;
buf = (uint8_t *) calloc(size, sizeof(char));
if (erase_it) {
printf("Erasing flash chip\n");
flash->erase(flash);
exit(0);
} else 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->virtual_memory, size);
else
flash->read(flash, buf);
if (exclude_end_position - exclude_start_position > 0)
memset(buf + exclude_start_position, 0,
exclude_end_position - exclude_start_position);
fwrite(buf, sizeof(char), size, image);
fclose(image);
printf("done\n");
} else {
struct stat image_stat;
if ((image = fopen(filename, "r")) == NULL) {
perror(filename);
exit(1);
}
if (fstat(fileno(image), &image_stat) != 0) {
perror(filename);
exit(1);
}
if (image_stat.st_size != flash->total_size * 1024) {
fprintf(stderr, "Error: Image size doesnt match\n");
exit(1);
}
fread(buf, sizeof(char), size, image);
show_id(buf, size);
fclose(image);
}
/* exclude range stuff. Nice idea, but at the moment it is only
* supported in hardware by the pm49fl004 chips.
* Instead of implementing this for all chips I suggest advancing
* it to the rom layout feature below and drop exclude range
* completely once all flash chips can do rom layouts. stepan
*/
// ////////////////////////////////////////////////////////////
if (exclude_end_position - exclude_start_position > 0)
memcpy(buf + exclude_start_position,
(const char *)flash->virtual_memory +
exclude_start_position,
exclude_end_position - exclude_start_position);
exclude_start_page = exclude_start_position / flash->page_size;
if ((exclude_start_position % flash->page_size) != 0) {
exclude_start_page++;
}
exclude_end_page = exclude_end_position / flash->page_size;
// ////////////////////////////////////////////////////////////
// This should be moved into each flash part's code to do it
// cleanly. This does the job.
handle_romentries(buf, (uint8_t *) flash->virtual_memory);
// ////////////////////////////////////////////////////////////
if (write_it)
ret |= flash->write(flash, buf);
if (verify_it)
ret |= verify_flash(flash, buf);
return ret;
}
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