openwrt/flashrom
1
0
Fork 0
mirror of https://review.coreboot.org/flashrom.git synced 2025-07-02 06:23:18 +02:00
Code Issues Releases Wiki Activity

Add support for Atmel's AT25F series of SPI flash chips

Browse Source 
This adds support for the following chips:
 - AT25F512, AT25F512A, AT25F512B
 - AT25F1024, AT25F1024A
 - AT25F2048
 - AT25F4096

Besides the definitions of the the chips in flashchips.c this includes
- a dedicated probing method (probe_spi_at25f)
- pretty printing methods (spi_prettyprint_status_register_at25f*), and
- unlocking methods (spi_disable_blockprotect_at25f*)

Corresponding to flashrom svn r1637.

Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
This commit is contained in:
Stefan Tauner
2012-12-29 15:04:20 +00:00
parent 54aaa4ae2b
commit 57794ac158
6 changed files with 250 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
spi25.c
View File

@ -279,6 +279,28 @@ int probe_spi_res2(struct flashctx *flash)
return 1;
}
/* Only used for some Atmel chips. */
int probe_spi_at25f(struct flashctx *flash)
{
static const unsigned char cmd[AT25F_RDID_OUTSIZE] = { AT25F_RDID };
unsigned char readarr[AT25F_RDID_INSIZE];
uint32_t id1;
uint32_t id2;
if (spi_send_command(flash, sizeof(cmd), sizeof(readarr), cmd, readarr))
return 0;
id1 = readarr[0];
id2 = readarr[1];
msg_cdbg("%s: id1 0x%02x, id2 0x%02x\n", __func__, id1, id2);
if (id1 == flash->chip->manufacture_id && id2 == flash->chip->model_id)
return 1;
return 0;
}
int spi_chip_erase_60(struct flashctx *flash)
{
int result;