Add support for old ST M25P05/M25P10 chips which only respond to the RES command and not the RDID command.
Unfortunately, either the datasheets are wrong or both chips have exactly the same ID.
Signed-off-by: Carl-Daniel Hailfinger c-d.hailfinger.devel.2006@gmx.net
Index: flashrom-sst25_res/flashchips.c =================================================================== --- flashrom-sst25_res/flashchips.c (Revision 659) +++ flashrom-sst25_res/flashchips.c (Arbeitskopie) @@ -2249,8 +2249,29 @@ .read = spi_chip_read, },
+ /* The ST M25P05 is a bit of a problem. It has the same ID as the + * ST M25P05-A in RES mode, but supports only 128 byte writes instead + * of 256 byte writes. We rely heavily on the fact that probe_spi_res + * only is successful if RDID does not work. + */ { .vendor = "ST", + .name = "M25P05.RES", + .bustype = CHIP_BUSTYPE_SPI, + .manufacture_id = ST_ID, + .model_id = ST_M25P05_RES, + .total_size = 64, + .page_size = 256, + .tested = TEST_UNTESTED, + .probe = probe_spi_res, + .probe_timing = TIMING_ZERO, + .erase = spi_chip_erase_c7, + .write = spi_chip_write_1, /* 128 */ + .read = spi_chip_read, + }, + + { + .vendor = "ST", .name = "M25P10-A", .bustype = CHIP_BUSTYPE_SPI, .manufacture_id = ST_ID, @@ -2265,8 +2286,25 @@ .read = spi_chip_read, },
+ /* The ST M25P10 has the same problem as the M25P05. */ { .vendor = "ST", + .name = "M25P10.RES", + .bustype = CHIP_BUSTYPE_SPI, + .manufacture_id = ST_ID, + .model_id = ST_M25P10_RES, + .total_size = 128, + .page_size = 256, + .tested = TEST_UNTESTED, + .probe = probe_spi_res, + .probe_timing = TIMING_ZERO, + .erase = spi_chip_erase_c7, + .write = spi_chip_write_1, /* 128 */ + .read = spi_chip_read, + }, + + { + .vendor = "ST", .name = "M25P20", .bustype = CHIP_BUSTYPE_SPI, .manufacture_id = ST_ID, Index: flashrom-sst25_res/flashchips.h =================================================================== --- flashrom-sst25_res/flashchips.h (Revision 659) +++ flashrom-sst25_res/flashchips.h (Arbeitskopie) @@ -322,7 +322,9 @@ */ #define ST_ID 0x20 /* ST / SGS/Thomson */ #define ST_M25P05A 0x2010 +#define ST_M25P05_RES 0x10 /* Same code as M25P10. */ #define ST_M25P10A 0x2011 +#define ST_M25P10_RES 0x10 /* Same code as M25P05. */ #define ST_M25P20 0x2012 #define ST_M25P40 0x2013 #define ST_M25P40_RES 0x12