openwrt/flashrom
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This will now enable flash automagically for chipsets on which it knows how

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Currently, only e7500 supported, but it is easy to add more.

Corresponding to coreboot v1 svn r744.
This commit is contained in:
Ronald G. Minnich 2003-02-11 21:06:09 +00:00
parent 4572a82245
commit c73ad98798
2 changed files with 78 additions and 3 deletions
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2
Makefile
View File

@ -4,7 +4,7 @@ OBJS += 82802ab.o
CC = gcc -O2 -g
all: ${OBJS}
${CC} -o flash_rom flash_rom.c ${OBJS}
${CC} -o flash_rom flash_rom.c ${OBJS} -lpci
# ${CC} -o flash_on flash_on.c
clean:

79
flash_rom.c
View File

@ -32,6 +32,7 @@
#include <sys/io.h>
#include <unistd.h>
#include <stdio.h>
#include <pci/pci.h>
#include "flash.h"
#include "jedec.h"
@ -68,7 +69,7 @@ struct flashchip flashchips[] = {
{NULL,}
};
int enable_flash_sis630 (void)
int enable_flash_sis630 (struct pci_dev *dev, char *name)
{
char b;
@ -122,6 +123,29 @@ int enable_flash_sis630 (void)
return 0;
}
int
enable_flash_e7500(struct pci_dev *dev, char *name) {
/* register 4e.b gets or'ed with one */
unsigned char old, new;
int ok;
/* if it fails, it fails. There are so many variations of broken mobos
* that it is hard to argue that we should quit at this point.
*/
old = pci_read_byte(dev, 0x4e);
new = old | 1;
ok = pci_write_byte(dev, 0x4e, new);
if (ok != new) {
printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
old, new, name);
return -1;
}
return 0;
}
struct flashchip * probe_flash(struct flashchip * flash)
{
int fd_mem;
@ -220,6 +244,52 @@ myusec_delay(time)
}
typedef struct penable {
unsigned short vendor, device;
char *name;
int (*doit)(struct pci_dev *dev, char *name);
} FLASH_ENABLE;
FLASH_ENABLE enables[] = {
{0x1, 0x1, "sis630 -- what's the ID?", enable_flash_sis630},
{0x8086, 0x2480, "E7500", enable_flash_e7500},
};
int
enable_flash_write() {
int i;
struct pci_access *pacc;
struct pci_dev *dev = 0;
unsigned int c;
FLASH_ENABLE *enable = 0;
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 */
/* now let's try to find the chipset we have ... */
for(i = 0; i < sizeof(enables)/sizeof(enables[0]) && (! dev); i++) {
struct pci_filter f;
struct pci_dev *z;
/* the first param is unused. */
pci_filter_init((struct pci_access *) 0, &f);
f.vendor = enables[i].vendor;
f.device = enables[i].device;
for(z=pacc->devices; z; z=z->next)
if (pci_filter_match(&f, z)) {
enable = &enables[i];
dev = z;
}
}
/* now do the deed. */
enable->doit(dev, enable->name);
return 0;
}
int
main (int argc, char * argv[])
{
char * buf;
@ -233,6 +303,11 @@ main (int argc, char * argv[])
printf(" is that flash info is dumped\n");
}
/* try to enable it. Failure IS an option, since not all motherboards
* really need this to be done, etc., etc. It sucks.
*/
(void) enable_flash_write();
if ((flash = probe_flash (flashchips)) == NULL) {
printf("EEPROM not found\n");
exit(1);
@ -241,7 +316,7 @@ main (int argc, char * argv[])
printf("Part is %s\n", flash->name);
if (argc < 2){
printf("OK, only ENABLING flash write, but NOT FLASHING\n");
exit(0);
return 0;
}
size = flash->total_size * 1024;