From 5da1799afdd51daca14a533fdf441bbe79b86bad Mon Sep 17 00:00:00 2001 From: Stefan Tauner Date: Sat, 29 Dec 2012 15:04:20 +0000 Subject: Add support for Atmel's AT25F series of SPI flash chips 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 Acked-by: Stefan Tauner --- spi25.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'spi25.c') diff --git a/spi25.c b/spi25.c index c9a4664..911dc4e 100644 --- a/spi25.c +++ b/spi25.c @@ -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; -- cgit v1.1