mirror of
https://github.com/tiagovignatti/intel-gpu-tools.git
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113 lines
2.9 KiB
C
113 lines
2.9 KiB
C
/*
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* Copyright © 2007 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Eric Anholt <eric@anholt.net>
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <errno.h>
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#include <pciaccess.h>
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#include <err.h>
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#ifndef DEFFILEMODE
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#define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) /* 0666 */
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#endif
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static void __attribute__((noreturn)) usage(void)
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{
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fprintf(stderr, "usage: bios_dumper <filename>\n");
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exit(1);
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}
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int main(int argc, char **argv)
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{
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struct pci_device *dev;
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void *bios;
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int error, fd;
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if (argc != 2)
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usage();
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error = pci_system_init();
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if (error != 0) {
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fprintf(stderr, "Couldn't initialize PCI system: %s\n",
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strerror(error));
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exit(1);
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}
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/* Grab the graphics card */
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dev = pci_device_find_by_slot(0, 0, 2, 0);
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if (dev == NULL)
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errx(1, "Couldn't find graphics card");
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error = pci_device_probe(dev);
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if (error != 0) {
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fprintf(stderr, "Couldn't probe graphics card: %s\n",
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strerror(error));
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exit(1);
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}
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if (dev->vendor_id != 0x8086)
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errx(1, "Graphics card is non-intel");
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/* Some versions of libpciaccess correct this automatically, but some
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* don't. */
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if (dev->rom_size == 0)
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dev->rom_size = 64 * 1024;
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bios = malloc(dev->rom_size);
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if (bios == NULL)
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errx(1, "Couldn't allocate memory for BIOS data\n");
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error = pci_device_read_rom(dev, bios);
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if (error != 0) {
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fprintf(stderr, "Couldn't read graphics card ROM: %s\n",
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strerror(error));
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exit(1);
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}
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fd = open(argv[1], O_RDWR | O_CREAT | O_TRUNC, DEFFILEMODE);
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if (fd < 0) {
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fprintf(stderr, "Couldn't open output: %s\n", strerror(errno));
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exit(1);
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}
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if (write(fd, bios, dev->rom_size) < dev->rom_size) {
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fprintf(stderr, "Couldn't write BIOS data: %s\n",
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strerror(errno));
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exit(1);
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}
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close(fd);
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pci_system_cleanup();
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return 0;
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}
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