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/*
 * This file is part of the flashrom project.
 *
 * Copyright (C) 2005-2008 coresyst
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-17 16:27:22 +0000
terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * 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 <stdio.h> #include <stdlib.h> #include <string.h> #include <stdint.h> #include "flash.h" char *mainboard_vendor = NULL; char *mainboard_part = NULL; int romimages = 0; extern int force; #define MAX_ROMLAYOUT 16 typedef struct { unsigned int start; unsigned int end; unsigned int included; char name[256]; } romlayout_t; romlayout_t rom_entries[MAX_ROMLAYOUT]; static char *def_name = "DEFAULT"; int show_id(uint8_t *bios, int size) { unsigned int *walk; walk = (unsigned int *)(bios + size - 0x10); walk--; if ((*walk) == 0 || ((*walk) & 0x3ff) != 0) { /* We might have an Nvidia chipset bios * which stores the id information at a * different location. */ walk = (unsigned int *)(bios + size - 0x80); walk--; } if ((*walk) == 0 || ((*walk) & 0x3ff) != 0) { printf("Flash image seems to be a legacy BIOS. Disabling checks.\n"); mainboard_vendor = def_name; mainboard_part = def_name; return 0; } printf_debug("coreboot last image size " "(not ROM size) is %d bytes.\n", *walk); walk--; mainboard_part = strdup((const char *)(bios + size - *walk)); walk--; mainboard_vendor = strdup((const char *)(bios + size - *walk)); printf_debug("Manufacturer: %s\n", mainboard_vendor); printf_debug("Mainboard ID: %s\n", mainboard_part); /* * If lb_vendor is not set, the coreboot table was * not found. Nor was -mVENDOR:PART specified */ if (!lb_vendor || !lb_part) { printf("Note: If the following flash access fails, " "you might need to specify -m <vendor>:<mainboard>.\n"); return 0; } /* These comparisons are case insensitive to make things * a little less user^Werror prone. */ if (!strcasecmp(mainboard_vendor, lb_vendor) && !strcasecmp(mainboard_part, lb_part)) { printf_debug("This firmware image matches " "this motherboard.\n"); } else { if (force) { printf("WARNING: This firmware image does not " "seem to fit to this machine - forcing it.\n"); } else { printf("ERROR: Your firmware image (%s:%s) does not " "appear to\n be correct for the detected " "mainboard (%s:%s)\n\nOverride with --force if you " "are absolutely sure that you\nare using a correct " "image for this mainboard or override\nthe detected " "values with --mainboard <vendor>:<mainboard>.\n\n", mainboard_vendor, mainboard_part, lb_vendor, lb_part); exit(1); } } return 0; } int read_romlayout(char *name) { FILE *romlayout; char tempstr[256]; int i; romlayout = fopen(name, "r"); if (!romlayout) { fprintf(stderr, "ERROR: Could not open ROM layout (%s).\n", name); return -1; } while (!feof(romlayout)) { char *tstr1, *tstr2; fscanf(romlayout, "%s %s\n", tempstr, rom_entries[romimages].name); #if 0 // fscanf does not like arbitrary comments like that :( later if (tempstr[0] == '#') { continue; } #endif tstr1 = strtok(tempstr, ":"); tstr2 = strtok(NULL, ":"); rom_entries[romimages].start = strtol(tstr1, (char **)NULL, 16); rom_entries[romimages].end = strtol(tstr2, (char **)NULL, 16); rom_entries[romimages].included = 0; romimages++; } for (i = 0; i < romimages; i++) { printf_debug("romlayout %08x - %08x named %s\n", rom_entries[i].start, rom_entries[i].end, rom_entries[i].name); } fclose(romlayout); return 0; } int find_romentry(char *name) { int i; if (!romimages) return -1; printf("Looking for \"%s\"... ", name); for (i = 0; i < romimages; i++) { if (!strcmp(rom_entries[i].name, name)) { rom_entries[i].included = 1; printf("found.\n"); return i; } } printf("not found.\n"); // Not found. Error. return -1; } int handle_romentries(uint8_t *buffer, uint8_t *content) { int i; // This function does not safe flash write cycles. // // Also it does not cope with overlapping rom layout // sections. // example: // 00000000:00008fff gfxrom // 00009000:0003ffff normal // 00040000:0007ffff fallback // 00000000:0007ffff all // // If you'd specify -i all the included flag of all other // sections is still 0, so no changes will be made to the // flash. Same thing if you specify -i normal -i all only // normal will be updated and the rest will be kept. for (i = 0; i < romimages; i++) { if (rom_entries[i].included) continue; memcpy(buffer + rom_entries[i].start, content + rom_entries[i].start, rom_entries[i].end - rom_entries[i].start); } return 0; }
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-17 16:27:22 +0000