openwrt/flashrom
1
0
Fork 0
mirror of https://review.coreboot.org/flashrom.git synced 2025-07-02 14:33:18 +02:00
Code Issues Releases Wiki Activity

Add -E option for chip erase, remove duplicated code

Browse Source 
Corresponding to flashrom svn r30 and coreboot v2 svn r1815.
This commit is contained in:
Ollie Lho
2004-12-08 20:10:01 +00:00
parent 1b8b66000f
commit efa28589b1
6 changed files with 49 additions and 147 deletions
Download Patch File Download Diff File Expand all files Collapse all files

55
sst_fwhub.c
View File

@ -47,38 +47,14 @@ void print_sst_fwhub_status(unsigned char status)
}
/* probe_jedec works fine for probing */
int probe_sst_fwhub(struct flashchip *flash)
{
volatile unsigned char *bios = flash->virt_addr;
unsigned char id1, id2;
volatile unsigned char *bios;
size_t size = flash->total_size * 1024;
/* Issue JEDEC Product ID Entry command */
*(volatile char *) (bios + 0x5555) = 0xAA;
myusec_delay(10);
*(volatile char *) (bios + 0x2AAA) = 0x55;
myusec_delay(10);
*(volatile char *) (bios + 0x5555) = 0x90;
myusec_delay(10);
/* Read product ID */
id1 = *(volatile unsigned char *) bios;
id2 = *(volatile unsigned char *) (bios + 0x01);
/* Issue JEDEC Product ID Exit command */
*(volatile char *) (bios + 0x5555) = 0xAA;
myusec_delay(10);
*(volatile char *) (bios + 0x2AAA) = 0x55;
myusec_delay(10);
*(volatile char *) (bios + 0x5555) = 0xF0;
myusec_delay(10);
printf("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2);
if (id1 != flash->manufacture_id || id2 != flash->model_id)
if (probe_jedec(flash) == 0)
return 0;
myusec_delay(10);
bios = mmap(0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
flash->fd_mem, (off_t) (0xFFFFFFFF - 0x400000 - size + 1));
if (bios == MAP_FAILED) {
@ -91,23 +67,15 @@ int probe_sst_fwhub(struct flashchip *flash)
return 1;
}
unsigned char wait_sst_fwhub(volatile unsigned char *bios)
{
toggle_ready_jedec(bios);
return 0;
}
int erase_sst_fwhub_block(struct flashchip *flash, int offset)
{
volatile unsigned char *wrprotect = flash->virt_addr_2 + offset + 2;
unsigned char status;
//printf("Erase at %p\n", bios);
// clear write protect
*(wrprotect) = 0;
erase_block_jedec(flash->virt_addr, offset);
status = wait_sst_fwhub(flash->virt_addr);
toggle_ready_jedec(flash->virt_addr);
return (0);
}
@ -122,19 +90,6 @@ int erase_sst_fwhub(struct flashchip *flash)
return (0);
}
void write_page_sst_fwhub(volatile char *bios, char *src,
volatile char *dst, int page_size)
{
int i;
for (i = 0; i < page_size; i++) {
/* transfer data from source to destination */
write_byte_program_jedec(bios, src, dst);
src++;
dst++;
}
}
int write_sst_fwhub(struct flashchip *flash, unsigned char *buf)
{
int i;
@ -150,8 +105,8 @@ int write_sst_fwhub(struct flashchip *flash, unsigned char *buf)
printf("Programming Page: ");
for (i = 0; i < total_size / page_size; i++) {
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);
write_sector_jedec(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("\n");