diff options
Diffstat (limited to 'src/drivers/spi')
| -rw-r--r-- | src/drivers/spi/spansion.c | 70 |
1 files changed, 61 insertions, 9 deletions
diff --git a/src/drivers/spi/spansion.c b/src/drivers/spi/spansion.c index d8a175454f..d7cca3ffae 100644 --- a/src/drivers/spi/spansion.c +++ b/src/drivers/spi/spansion.c @@ -44,20 +44,25 @@ #define CMD_S25FLXX_DP 0xb9 /* Deep Power-down */ #define CMD_S25FLXX_RES 0xab /* Release from DP, and Read Signature */ +#define SPSN_MANUFACTURER_ID_S25FL116K 0x01 #define SPSN_ID_S25FL008A 0x0213 #define SPSN_ID_S25FL016A 0x0214 #define SPSN_ID_S25FL032A 0x0215 #define SPSN_ID_S25FL064A 0x0216 #define SPSN_ID_S25FL128S 0x0219 #define SPSN_ID_S25FL128P 0x2018 +#define SPSN_ID_S25FL116K 0x4015 #define SPSN_EXT_ID_S25FL128P_256KB 0x0300 #define SPSN_EXT_ID_S25FL128P_64KB 0x0301 #define SPSN_EXT_ID_S25FL032P 0x4d00 #define SPSN_EXT_ID_S25FLXXS_64KB 0x4d01 struct spansion_spi_flash_params { + u8 idcode0; u16 idcode1; u16 idcode2; + int (*identify) (const struct spansion_spi_flash_params *params, + u8 *idcode); u16 page_size; u16 pages_per_sector; u16 nr_sectors; @@ -75,79 +80,130 @@ static inline struct spansion_spi_flash *to_spansion_spi_flash(struct spi_flash return container_of(flash, struct spansion_spi_flash, flash); } +/* + * returns non-zero if the given idcode matches the ID of the chip. this is for + * chips which use 2nd, 3rd, 4th, and 5th byte. + */ +static int identify_2345(const struct spansion_spi_flash_params *params, + u8 *idcode) +{ + u16 jedec = idcode[1] << 8 | idcode[2]; + u16 ext_jedec = idcode[3] << 8 | idcode[4]; + return (params->idcode1 == jedec) && (params->idcode2 == ext_jedec); +} + +/* + * returns non-zero if the given idcode matches the ID of the chip. this is for + * chips which use 1st, 2nd, and 3rd byte. + */ +static int identify_123(const struct spansion_spi_flash_params *params, + u8 *idcode) +{ + u16 jedec = idcode[1] << 8 | idcode[2]; + return (params->idcode0 == idcode[0]) && (params->idcode1 == jedec); +} + static const struct spansion_spi_flash_params spansion_spi_flash_table[] = { { + .idcode0 = 0, .idcode1 = SPSN_ID_S25FL008A, .idcode2 = 0, + .identify = identify_2345, .page_size = 256, .pages_per_sector = 256, .nr_sectors = 16, .name = "S25FL008A", }, { + .idcode0 = 0, .idcode1 = SPSN_ID_S25FL016A, .idcode2 = 0, + .identify = identify_2345, .page_size = 256, .pages_per_sector = 256, .nr_sectors = 32, .name = "S25FL016A", }, { + .idcode0 = 0, .idcode1 = SPSN_ID_S25FL032A, .idcode2 = 0, + .identify = identify_2345, .page_size = 256, .pages_per_sector = 256, .nr_sectors = 64, .name = "S25FL032A", }, { + .idcode0 = 0, .idcode1 = SPSN_ID_S25FL064A, .idcode2 = 0, + .identify = identify_2345, .page_size = 256, .pages_per_sector = 256, .nr_sectors = 128, .name = "S25FL064A", }, { + .idcode0 = 0, .idcode1 = SPSN_ID_S25FL128P, .idcode2 = SPSN_EXT_ID_S25FL128P_64KB, + .identify = identify_2345, .page_size = 256, .pages_per_sector = 256, .nr_sectors = 256, .name = "S25FL128P_64K", }, { + .idcode0 = 0, .idcode1 = SPSN_ID_S25FL128P, .idcode2 = SPSN_EXT_ID_S25FL128P_256KB, + .identify = identify_2345, .page_size = 256, .pages_per_sector = 1024, .nr_sectors = 64, .name = "S25FL128P_256K", }, { + .idcode0 = 0, .idcode1 = SPSN_ID_S25FL128S, .idcode2 = SPSN_EXT_ID_S25FLXXS_64KB, + .identify = identify_2345, .page_size = 256, .pages_per_sector = 256, .nr_sectors = 512, .name = "S25FL128S_256K", }, { + .idcode0 = 0, .idcode1 = SPSN_ID_S25FL032A, .idcode2 = SPSN_EXT_ID_S25FL032P, + .identify = identify_2345, .page_size = 256, .pages_per_sector = 256, .nr_sectors = 64, .name = "S25FL032P", }, { + .idcode0 = 0, .idcode1 = SPSN_ID_S25FL128P, .idcode2 = SPSN_EXT_ID_S25FLXXS_64KB, + .identify = identify_2345, .page_size = 256, .pages_per_sector = 256, .nr_sectors = 256, .name = "25FS128S", }, + { + .idcode0 = SPSN_MANUFACTURER_ID_S25FL116K, + .idcode1 = SPSN_ID_S25FL116K, + .idcode2 = 0, + .identify = identify_123, + .page_size = 256, + .pages_per_sector = 256, + .nr_sectors = 32, + .name = "S25FL116K_16M", + }, }; static int spansion_write(struct spi_flash *flash, @@ -223,21 +279,17 @@ struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode) const struct spansion_spi_flash_params *params; struct spansion_spi_flash *spsn; unsigned int i; - unsigned short jedec, ext_jedec; - - jedec = idcode[1] << 8 | idcode[2]; - ext_jedec = idcode[3] << 8 | idcode[4]; for (i = 0; i < ARRAY_SIZE(spansion_spi_flash_table); i++) { params = &spansion_spi_flash_table[i]; - if (params->idcode1 == jedec) { - if (params->idcode2 == ext_jedec) - break; - } + if (params->identify(params, idcode)) + break; } if (i == ARRAY_SIZE(spansion_spi_flash_table)) { - printk(BIOS_WARNING, "SF: Unsupported SPANSION ID %04x %04x\n", jedec, ext_jedec); + printk(BIOS_WARNING, + "SF: Unsupported SPANSION ID %02x %02x %02x %02x %02x\n", + idcode[0], idcode[1], idcode[2], idcode[3], idcode[4]); return NULL; } |