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| author | Stephan Linz <linz@li-pro.net> | 2012-08-02 20:47:29 +0200 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2012-08-09 20:41:54 -0400 |
| commit | 63ff6a66aef4d838fa6e3737d3e242697c0a591d (patch) | |
| tree | 2fe78294ddfcd08ab1ec73244fa5160349c8478a | |
| parent | c969abc47033d6f810d3c9dbdb994ea9d691d038 (diff) | |
| download | u-boot-imx-63ff6a66aef4d838fa6e3737d3e242697c0a591d.zip u-boot-imx-63ff6a66aef4d838fa6e3737d3e242697c0a591d.tar.gz u-boot-imx-63ff6a66aef4d838fa6e3737d3e242697c0a591d.tar.bz2 | |
sf: stmicro: support JEDEC standard two-byte signature
There are more than the M25Pxx serial flashs that can be
used with the stmicro driver, for example: the M25PXxx or
N25Qxx serie. All these chips have burned in the original
stmicro manufacture id 0x20 together with a standard
two-byte signature.
In preperation to support all these chips the stmicro driver
have to decode the full two-byte signature.
Signed-off-by: Stephan Linz <linz@li-pro.net>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| -rw-r--r-- | drivers/mtd/spi/stmicro.c | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/drivers/mtd/spi/stmicro.c b/drivers/mtd/spi/stmicro.c index dbd1fc1..706bb8e 100644 --- a/drivers/mtd/spi/stmicro.c +++ b/drivers/mtd/spi/stmicro.c @@ -37,7 +37,7 @@ #define CMD_M25PXX_RES 0xab /* Release from DP, and Read Signature */ struct stmicro_spi_flash_params { - u8 idcode1; + u16 id; u16 pages_per_sector; u16 nr_sectors; const char *name; @@ -45,55 +45,55 @@ struct stmicro_spi_flash_params { static const struct stmicro_spi_flash_params stmicro_spi_flash_table[] = { { - .idcode1 = 0x11, + .id = 0x2011, .pages_per_sector = 128, .nr_sectors = 4, .name = "M25P10", }, { - .idcode1 = 0x15, + .id = 0x2015, .pages_per_sector = 256, .nr_sectors = 32, .name = "M25P16", }, { - .idcode1 = 0x12, + .id = 0x2012, .pages_per_sector = 256, .nr_sectors = 4, .name = "M25P20", }, { - .idcode1 = 0x16, + .id = 0x2016, .pages_per_sector = 256, .nr_sectors = 64, .name = "M25P32", }, { - .idcode1 = 0x13, + .id = 0x2013, .pages_per_sector = 256, .nr_sectors = 8, .name = "M25P40", }, { - .idcode1 = 0x17, + .id = 0x2017, .pages_per_sector = 256, .nr_sectors = 128, .name = "M25P64", }, { - .idcode1 = 0x14, + .id = 0x2014, .pages_per_sector = 256, .nr_sectors = 16, .name = "M25P80", }, { - .idcode1 = 0x18, + .id = 0x2018, .pages_per_sector = 1024, .nr_sectors = 64, .name = "M25P128", }, { - .idcode1 = 0x19, + .id = 0xba19, .pages_per_sector = 256, .nr_sectors = 512, .name = "N25Q256", @@ -105,6 +105,7 @@ struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 * idcode) const struct stmicro_spi_flash_params *params; struct spi_flash *flash; unsigned int i; + u16 id; if (idcode[0] == 0xff) { i = spi_flash_cmd(spi, CMD_M25PXX_RES, @@ -119,15 +120,17 @@ struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 * idcode) return NULL; } + id = ((idcode[1] << 8) | idcode[2]); + for (i = 0; i < ARRAY_SIZE(stmicro_spi_flash_table); i++) { params = &stmicro_spi_flash_table[i]; - if (params->idcode1 == idcode[2]) { + if (params->id == id) { break; } } if (i == ARRAY_SIZE(stmicro_spi_flash_table)) { - debug("SF: Unsupported STMicro ID %02x\n", idcode[1]); + debug("SF: Unsupported STMicro ID %04x\n", id); return NULL; } |