| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <stdint.h> |
| #include "layout.h" |
| #include "lbtable.h" |
| #include "debug.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("LinuxBIOS 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 linuxbios 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) { |
| printf("Error while opening 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; |
| } |