openwrt/flashrom
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Fixes ...

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Corresponding to coreboot v1 svn r760.
This commit is contained in:
Ronald G. Minnich 2003-03-28 03:29:43 +00:00
parent d4228fdc47
commit e555957f04
2 changed files with 106 additions and 30 deletions
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132
flash_rom.c
View File

@ -136,6 +136,9 @@ enable_flash_e7500(struct pci_dev *dev, char *name) {
new = old | 1;
if (new == old)
return 0;
ok = pci_write_byte(dev, 0x4e, new);
if (ok != new) {
@ -146,6 +149,28 @@ enable_flash_e7500(struct pci_dev *dev, char *name) {
return 0;
}
int
enable_flash_vt8231(struct pci_dev *dev, char *name) {
unsigned char old, new;
int ok;
old = pci_read_byte(dev, 0x40);
new = old | 0x10;
if (new == old)
return 0;
ok = pci_write_byte(dev, 0x40, new);
if (ok != 0) {
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;
@ -206,29 +231,29 @@ int verify_flash (struct flashchip * flash, char * buf, int verbose)
// count to a billion. Time it. If it's < 1 sec, count to 10B, etc.
unsigned long micro = 0;
unsigned long micro = 1;
void
myusec_calibrate_delay()
{
unsigned long count = 10 * 1024 * 1024;
int count = 1000;
volatile unsigned long i;
unsigned long timeusec;
struct timeval start, end;
int ok = 0;
void myusec_delay(int time);
printf("Setting up microsecond timing loop\n");
while (! ok) {
//fprintf(stderr, "Try %d\n", count);
gettimeofday(&start, 0);
for( i = count; i; i--)
;
myusec_delay(count);
gettimeofday(&end, 0);
timeusec = 1000000 * (end.tv_sec - start.tv_sec ) +
(end.tv_usec - start.tv_usec);
fprintf(stderr, "timeusec is %d\n", timeusec);
count *= 100;
if (timeusec < 1000000)
//fprintf(stderr, "timeusec is %d\n", timeusec);
count *= 2;
if (timeusec < 1000000/4)
continue;
ok = 1;
}
@ -236,18 +261,17 @@ myusec_calibrate_delay()
// compute one microsecond. That will be count / time
micro = count / timeusec;
//fprintf(stderr, "one us is %d count\n", micro);
fprintf(stderr, "%dM loops per second\n", micro);
}
void
myusec_delay(time)
myusec_delay(int time)
{
volatile unsigned long i;
for(i = 0; i < time * micro; i++)
;
}
typedef struct penable {
@ -260,6 +284,7 @@ FLASH_ENABLE enables[] = {
{0x1, 0x1, "sis630 -- what's the ID?", enable_flash_sis630},
{0x8086, 0x2480, "E7500", enable_flash_e7500},
{0x1106, 0x8231, "VT8231", enable_flash_vt8231},
};
int
@ -291,10 +316,25 @@ enable_flash_write() {
}
/* now do the deed. */
enable->doit(dev, enable->name);
if (enable) {
printf("Enabling flash write on %s...", enable->name);
if (enable->doit(dev, enable->name) == 0)
printf("OK\n");
}
return 0;
}
void usage(const char *name)
{
printf("usage: %s [-rwv] [file]\n", name);
printf("-r: read flash and save into file\n"
"-w: write file into flash (default when file is specified)\n"
"-v: verify flash against file\n"
" If no file is specified, then all that happens\n"
" is that flash info is dumped\n");
exit(1);
}
int
main (int argc, char * argv[])
{
@ -302,12 +342,36 @@ main (int argc, char * argv[])
unsigned long size;
FILE * image;
struct flashchip * flash;
if (argc > 2){
printf("usage: %s [romimage]\n", argv[0]);
printf(" If no romimage is specified, then all that happens\n");
printf(" is that flash info is dumped\n");
int opt;
int read_it = 0, write_it = 0, verify_it = 0;
char *filename = NULL;
while ((opt = getopt(argc, argv, "rwv")) != EOF) {
switch (opt) {
case 'r':
read_it = 1;
break;
case 'w':
write_it = 1;
break;
case 'v':
verify_it = 1;
break;
default:
usage(argv[0]);
break;
}
}
if (read_it && write_it) {
printf("-r and -w are mutually exclusive\n");
usage(argv[0]);
}
if (optind < argc)
filename = argv[optind++];
printf("Calibrating timer since microsleep sucks ... takes a second\n");
myusec_calibrate_delay();
printf("OK, calibrated, now do the deed\n");
/* try to enable it. Failure IS an option, since not all motherboards
* really need this to be done, etc., etc. It sucks.
@ -320,25 +384,35 @@ main (int argc, char * argv[])
}
printf("Part is %s\n", flash->name);
if (argc < 2){
if (!filename){
printf("OK, only ENABLING flash write, but NOT FLASHING\n");
return 0;
}
size = flash->total_size * 1024;
buf = (char *) calloc (size, sizeof(char));
if ((image = fopen (argv[1], "r")) == NULL) {
perror("Error opening image file");
exit(1);
if (read_it) {
if ((image = fopen (filename, "w")) == NULL) {
perror("Error opening image file");
exit(1);
}
printf("Reading Flash...");
memcpy(buf, (const char *) flash->virt_addr, size);
fwrite(buf, sizeof(char), size, image);
fclose(image);
printf("done\n");
} else {
if ((image = fopen (filename, "r")) == NULL) {
perror("Error opening image file");
exit(1);
}
fread (buf, sizeof(char), size, image);
fclose(image);
}
buf = (char *) calloc (size, sizeof(char));
fread (buf, sizeof(char), size, image);
printf("Calibrating timer since microsleep sucks ... takes a second\n");
myusec_calibrate_delay();
printf("OK, calibrated, now do the deed\n");
flash->write (flash, buf);
verify_flash (flash, buf, /* verbose = */ 0);
if (write_it)
flash->write (flash, buf);
if (verify_it)
verify_flash (flash, buf, /* verbose = */ 0);
return 0;
}

4
sst39sf020.c
View File

@ -27,6 +27,7 @@
#include "flash.h"
#include "jedec.h"
#include <stdio.h>
#define AUTO_PG_ERASE1 0x20
#define AUTO_PG_ERASE2 0xD0
@ -160,7 +161,7 @@ int erase_39sf020 (struct flashchip * flash)
Temp = bios + 0x5555; /* set up address to be C000:5555h */
*Temp = 0x10; /* write data 0x55 to the address */
myusec_delay(20000);
myusec_delay(50000);
}
int write_39sf020 (struct flashchip * flash, char * buf)
@ -181,6 +182,7 @@ int write_39sf020 (struct flashchip * flash, char * buf)
write_sector_39sf020(bios, buf + i * page_size, bios + i * page_size,
page_size);
printf ("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
fflush(stdout);
}
printf("\n");