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Fixes

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- switch to volatile everywhere
 - use myusec_delay instead of usleep

Corresponding to coreboot v1 svn r492.
This commit is contained in:
Ronald G. Minnich
2002-01-29 20:18:02 +00:00
parent f4cf2baec9
commit ef5779d1dd
8 changed files with 137 additions and 88 deletions
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41
jedec.c
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@ -29,24 +29,25 @@
int probe_jedec (struct flashchip * flash)
{
char * bios = flash->virt_addr;
volatile char * bios = flash->virt_addr;
unsigned char id1, id2;
*(char *) (bios + 0x5555) = 0xAA;
*(char *) (bios + 0x2AAA) = 0x55;
*(char *) (bios + 0x5555) = 0x90;
*(volatile char *) (bios + 0x5555) = 0xAA;
*(volatile char *) (bios + 0x2AAA) = 0x55;
*(volatile char *) (bios + 0x5555) = 0x90;
usleep(10);
myusec_delay(10);
id1 = *(unsigned char *) bios;
id2 = *(unsigned char *) (bios + 0x01);
id1 = *(volatile unsigned char *) bios;
id2 = *(volatile unsigned char *) (bios + 0x01);
*(char *) (bios + 0x5555) = 0xAA;
*(char *) (bios + 0x2AAA) = 0x55;
*(char *) (bios + 0x5555) = 0xF0;
*(volatile char *) (bios + 0x5555) = 0xAA;
*(volatile char *) (bios + 0x2AAA) = 0x55;
*(volatile char *) (bios + 0x5555) = 0xF0;
usleep(10);
myusec_delay(10);
printf(__FUNCTION__ "id1 %d, id2 %d\n", id1, id2);
if (id1 == flash->manufacture_id && id2 == flash->model_id)
return 1;
@ -55,17 +56,17 @@ int probe_jedec (struct flashchip * flash)
int erase_jedec (struct flashchip * flash)
{
char * bios = flash->virt_addr;
volatile char * bios = flash->virt_addr;
*(char *) (bios + 0x5555) = 0xAA;
*(char *) (bios + 0x2AAA) = 0x55;
*(char *) (bios + 0x5555) = 0x80;
*(volatile char *) (bios + 0x5555) = 0xAA;
*(volatile char *) (bios + 0x2AAA) = 0x55;
*(volatile char *) (bios + 0x5555) = 0x80;
*(char *) (bios + 0x5555) = 0xAA;
*(char *) (bios + 0x2AAA) = 0x55;
*(char *) (bios + 0x5555) = 0x10;
*(volatile char *) (bios + 0x5555) = 0xAA;
*(volatile char *) (bios + 0x2AAA) = 0x55;
*(volatile char *) (bios + 0x5555) = 0x10;
usleep(10);
myusec_delay(10);
toggle_ready_jedec(bios);
}
@ -73,7 +74,7 @@ int write_jedec (struct flashchip * flash, char * buf)
{
int i;
int total_size = flash->total_size *1024, page_size = flash->page_size;
char * bios = flash->virt_addr;
volatile char * bios = flash->virt_addr;
erase_jedec (flash);
printf ("Programming Page: ");