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#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("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("MANUFACTURER: %s\n", mainboard_vendor);
printf("MAINBOARD ID: %s\n", mainboard_part);
/* These comparisons are case insensitive to make things
* a little less user^Werror prone.
*/
if(lb_vendor && !strcasecmp(mainboard_vendor, lb_vendor) &&
lb_part && !strcasecmp(mainboard_part, lb_part)) {
printf ("This firmware image matches "
"this motherboard.\n");
} else {
if(force) {
printf("WARNING: This firmware image does not "
"fit to this machine - forcing it.\n");
} else {
printf("ERROR: This firmware image does not "
"fit to this machine\nOverride with -m if"
"you know exactly what you are doing.\n");
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.\n");
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("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;
}
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