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Add retry to write_byte_program_jedec(), 99% success rate

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Corresponding to flashrom svn r29 and coreboot v2 svn r1814.
This commit is contained in:
Ollie Lho
2004-12-08 02:10:33 +00:00
parent d11f361808
commit 1b8b66000f
4 changed files with 12 additions and 74 deletions
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25
sst_fwhub.c
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@ -79,10 +79,8 @@ int probe_sst_fwhub(struct flashchip *flash)
myusec_delay(10);
// we need to mmap the write-protect space.
printf("mapping control register at %x\n", 0 - 0x400000 -size);
bios = mmap(0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
flash->fd_mem, (off_t) (0 - 0x400000 - size));
flash->fd_mem, (off_t) (0xFFFFFFFF - 0x400000 - size + 1));
if (bios == MAP_FAILED) {
// it's this part but we can't map it ...
perror("Error MMAP /dev/mem");
@ -101,23 +99,16 @@ unsigned char wait_sst_fwhub(volatile unsigned char *bios)
int erase_sst_fwhub_block(struct flashchip *flash, int offset)
{
volatile unsigned char *bios = flash->virt_addr + offset;
volatile unsigned char *wrprotect =
flash->virt_addr_2 + offset + 2;
volatile unsigned char *wrprotect = flash->virt_addr_2 + offset + 2;
unsigned char status;
// clear status register
printf("Erase at %p\n", bios);
//printf("Erase at %p\n", bios);
// clear write protect
printf("write protect is at %p\n", (wrprotect));
printf("write protect is 0x%x\n", *(wrprotect));
*(wrprotect) = 0;
printf("write protect is 0x%x\n", *(wrprotect));
erase_block_jedec(flash->virt_addr, offset);
status = wait_sst_fwhub(flash->virt_addr);
//print_sst_fwhub_status(status);
printf("DONE BLOCK 0x%x\n", offset);
return (0);
}
@ -126,11 +117,8 @@ int erase_sst_fwhub(struct flashchip *flash)
int i;
unsigned int total_size = flash->total_size * 1024;
printf("total_size is %d; flash->page_size is %d\n",
total_size, flash->page_size);
for (i = 0; i < total_size; i += flash->page_size)
erase_sst_fwhub_block(flash, i);
printf("DONE ERASE\n");
return (0);
}
@ -145,7 +133,6 @@ void write_page_sst_fwhub(volatile char *bios, char *src,
src++;
dst++;
}
}
int write_sst_fwhub(struct flashchip *flash, unsigned char *buf)
@ -165,10 +152,8 @@ int write_sst_fwhub(struct flashchip *flash, unsigned char *buf)
printf("%04d at address: 0x%08x", i, i * page_size);
write_page_sst_fwhub(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");
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");
}
printf("\n");
protect_sst_fwhub(bios);
return (0);
}