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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) 2005-2008 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 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, PCI_SUBSYSTEM_VENDOR_ID))
&& (card_device ==
pci_read_word(temp, PCI_SUBSYSTEM_ID)))
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 *first_flash, int force)
{
volatile uint8_t *bios;
struct flashchip *flash;
unsigned long base = 0, size;
for (flash = first_flash; flash && flash->name; flash++) {
if (chip_to_probe && strcmp(flash->name, chip_to_probe) != 0)
continue;
printf_debug("Probing for %s %s, %d KB: ",
flash->vendor, flash->name, flash->total_size);
if (!flash->probe && !force) {
printf_debug("failed! flashrom has no probe function for this flash chip.\n");
continue;
}
size = flash->total_size * 1024;
/* 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) {
/*
* if a flash size of 0 is mapped, we map a single page
* so we can probe in that area whether we know the
* vendor at least.
*/
size = getpagesize();
}
base = flashbase ? flashbase : (0xffffffff - size + 1);
bios = mmap(0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
fd_mem, (off_t) base);
if (bios == MAP_FAILED) {
perror("Can't mmap memory using " MEM_DEV);
exit(1);
}
flash->virtual_memory = bios;
if (force)
break;
if (flash->probe(flash) != 1)
goto notfound;
if (first_flash == flashchips
|| flash->model_id != GENERIC_DEVICE_ID)
break;
notfound:
munmap((void *)bios, size);
}
if (!flash || !flash->name)
return NULL;
printf("Found chip \"%s %s\" (%d KB) at physical address 0x%lx.\n",
flash->vendor, flash->name, flash->total_size, base);
flashbase = base;
return flash;
}
int verify_flash(struct flashchip *flash, uint8_t *buf)
{
int idx;
int total_size = flash->total_size * 1024;
uint8_t *buf2 = (uint8_t *) calloc(total_size, sizeof(char));
if (flash->read == NULL)
memcpy(buf2, (const char *)flash->virtual_memory, total_size);
else
flash->read(flash, buf2);
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 (*(buf2 + idx) != *(buf + idx)) {
if (verbose) {
printf("0x%08x ", idx);
}
printf("FAILED! Expected=0x%02x, Read=0x%02x\n",
*(buf + idx), *(buf2 + idx));
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 print_supported_chips(void)
{
int i;
printf("Supported ROM chips:\n\n");
for (i = 0; flashchips[i].name != NULL; i++)
printf("%s %s\n", flashchips[i].vendor, flashchips[i].name);
}
void usage(const char *name)
{
printf("usage: %s [-rwvEVfLhR] [-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"
" -L | --list-supported: print supported devices\n"
" -h | --help: print this help text\n"
" -R | --version: print the version (release)\n"
"\n" " If no file is specified, then all that happens"
" is that flash info is dumped.\n\n");
exit(1);
}
void print_version(void)
{
printf("flashrom r%s\n", FLASHROM_VERSION);
}
int main(int argc, char *argv[])
{
uint8_t *buf;
unsigned long size;
uint32_t erasedbytes;
FILE *image;
/* Probe for up to three flash chips. */
struct flashchip *flash, *flashes[3];
int opt;
int option_index = 0;
int force = 0;
int read_it = 0, write_it = 0, erase_it = 0, verify_it = 0;
int ret = 0, i;
#ifdef __FreeBSD__
int io_fd;
#endif
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'},
{"list-supported", 0, 0, 'L'},
{"help", 0, 0, 'h'},
{"version", 0, 0, 'R'},
{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, "rRwvVEfc:s:e:m:l:i:Lh",
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 {
lb_vendor = NULL;
lb_part = 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 'L':
print_supported_chips();
print_supported_chipsets();
print_supported_boards();
exit(0);
break;
case 'R':
print_version();
exit(0);
break;
case 'h':
default:
usage(argv[0]);
break;
}
}
if (read_it && write_it) {
printf("Error: -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) {
#elif defined(__FreeBSD__)
if ((io_fd = open("/dev/io", O_RDWR)) < 0) {
#else
if (iopl(3) != 0) {
#endif
fprintf(stderr, "ERROR: Could not get IO privileges (%s).\nYou need to be root.\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 UNCACHED. That's important for MMIO. */
if ((fd_mem = open(MEM_DEV, O_RDWR | O_SYNC)) < 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.
*/
coreboot_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);
for (i = 0; i < ARRAY_SIZE(flashes); i++) {
flashes[i] =
probe_flash(i ? flashes[i - 1] + 1 : flashchips, 0);
if (!flashes[i])
for (i++; i < ARRAY_SIZE(flashes); i++)
flashes[i] = NULL;
}
if (flashes[1]) {
printf("Multiple flash chips were detected:");
for (i = 0; i < ARRAY_SIZE(flashes) && flashes[i]; i++)
printf(" %s", flashes[i]->name);
printf("\nPlease specify which chip to use with the -c <chipname> option.\n");
exit(1);
} else if (!flashes[0]) {
printf("No EEPROM/flash device found.\n");
if (!force || !chip_to_probe) {
printf("If you know which flash chip you have, and if this version of flashrom\n");
printf("supports a similar flash chip, you can try to force read your chip. Run:\n");
printf("flashrom -f -r -c similar_supported_flash_chip filename\n");
printf("\n");
printf("Note: flashrom can never write when the flash chip isn't found automatically.\n");
}
if (force && read_it && chip_to_probe) {
printf("Force read (-f -r -c) requested, forcing chip probe success:\n");
flashes[0] = probe_flash(flashchips, 1);
if (!flashes[0]) {
printf("flashrom does not support a flash chip named '%s'.\n", chip_to_probe);
printf("Run flashrom -L to view the hardware supported in this flashrom version.\n");
exit(1);
}
if (!filename) {
printf("Error: No filename specified.\n");
exit(1);
}
size = flashes[0]->total_size * 1024;
buf = (uint8_t *) calloc(size, sizeof(char));
if ((image = fopen(filename, "w")) == NULL) {
perror(filename);
exit(1);
}
printf("Force reading flash... ");
if (!flashes[0]->read)
memcpy(buf, (const char *)flashes[0]->virtual_memory, size);
else
flashes[0]->read(flashes[0], 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");
free(buf);
exit(0);
}
// FIXME: flash writes stay enabled!
exit(1);
}
flash = flashes[0];
if (TEST_OK_MASK != (flash->tested & TEST_OK_MASK)) {
printf("===\n");
if (flash->tested & TEST_BAD_MASK) {
printf("This flash part has status NOT WORKING for operations:");
if (flash->tested & TEST_BAD_PROBE)
printf(" PROBE");
if (flash->tested & TEST_BAD_READ)
printf(" READ");
if (flash->tested & TEST_BAD_ERASE)
printf(" ERASE");
if (flash->tested & TEST_BAD_WRITE)
printf(" WRITE");
printf("\n");
}
if ((!(flash->tested & TEST_BAD_PROBE) && !(flash->tested & TEST_OK_PROBE)) ||
(!(flash->tested & TEST_BAD_READ) && !(flash->tested & TEST_OK_READ)) ||
(!(flash->tested & TEST_BAD_ERASE) && !(flash->tested & TEST_OK_ERASE)) ||
(!(flash->tested & TEST_BAD_WRITE) && !(flash->tested & TEST_OK_WRITE))) {
printf("This flash part has status UNTESTED for operations:");
if (!(flash->tested & TEST_BAD_PROBE) && !(flash->tested & TEST_OK_PROBE))
printf(" PROBE");
if (!(flash->tested & TEST_BAD_READ) && !(flash->tested & TEST_OK_READ))
printf(" READ");
if (!(flash->tested & TEST_BAD_ERASE) && !(flash->tested & TEST_OK_ERASE))
printf(" ERASE");
if (!(flash->tested & TEST_BAD_WRITE) && !(flash->tested & TEST_OK_WRITE))
printf(" WRITE");
printf("\n");
}
printf("Please email a report to flashrom@coreboot.org if any of the above operations\n");
printf("work correctly for you with this flash part. Please include the full output\n");
printf("from the program, including chipset found. Thank you for your help!\n");
printf("===\n");
}
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... ");
if (NULL == flash->erase) {
printf("FAILED!\n");
fprintf(stderr, "ERROR: flashrom has no erase function for this flash chip.\n");
return 1;
}
flash->erase(flash);
if (NULL == flash->read)
memcpy(buf, (const char *)flash->virtual_memory, size);
else
flash->read(flash, buf);
for (erasedbytes = 0; erasedbytes <= size; erasedbytes++)
if (0xff != buf[erasedbytes]) {
printf("FAILED!\n");
fprintf(stderr, "ERROR at 0x%08x: Expected=0xff, Read=0x%02x\n",
erasedbytes, buf[erasedbytes]);
return 1;
}
printf("SUCCESS.\n");
return 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 doesn't match\n");
exit(1);
}
fread(buf, sizeof(char), size, image);
show_id(buf, size, force);
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) {
if (!flash->write) {
fprintf(stderr, "Error: flashrom has no write function for this flash chip.\n");
return 1;
}
ret |= flash->write(flash, buf);
}
if (verify_it)
ret |= verify_flash(flash, buf);
#ifdef __FreeBSD__
close(io_fd);
#endif
return ret;
}
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