diff options
| -rw-r--r-- | flash.h | 30 | ||||
| -rw-r--r-- | flashchips.c | 2 | ||||
| -rw-r--r-- | m29f400bt.c | 3 |
3 files changed, 24 insertions, 11 deletions
@@ -59,16 +59,16 @@ extern struct flashchip flashchips[]; * All SPI parts have 16-bit device IDs. */ -#define ALLIANCE_ID 0x52 /* Alliance */ +#define ALLIANCE_ID 0x52 /* Alliance Semiconductor */ #define AMD_ID 0x01 /* AMD */ #define AM_29F040B 0xA4 #define AM_29LV040B 0x4F #define AM_29F016D 0xAD -#define AMIC_ID 0x37 /* AMIC */ +#define AMIC_ID 0x7F37 /* AMIC */ -#define ASD_ID 0x25 /* ASD */ +#define ASD_ID 0x25 /* ASD, not listed in JEP106W */ #define ASD_AE49F2008 0x52 #define ATMEL_ID 0x1F /* Atmel */ @@ -79,14 +79,14 @@ extern struct flashchip flashchips[]; #define CATALYST_ID 0x31 /* Catalyst */ -#define EMST_ID 0x8C /* EMST / EFST */ +#define EMST_ID 0x8C /* EMST / EFST Elite Flash Storage*/ #define EMST_F49B002UA 0x00 /* * EN25 chips are SPI, first byte of device ID is memory type, * second byte of device ID is log(bitsize)-9. */ -#define EON_ID 0x1C /* EON */ +#define EON_ID 0x1C /* EON Silicon Devices */ #define EN_25B05 0x2010 /* 2^19 kbit or 2^16 kByte */ #define EN_25B10 0x2011 #define EN_25B20 0x2012 @@ -96,17 +96,24 @@ extern struct flashchip flashchips[]; #define EN_25B32 0x2016 #define FUJITSU_ID 0x04 /* Fujitsu */ -#define MBM29F400TC 0x23 +/* MBM29F400TC_STRANGE has a value not mentioned in the data sheet and we + * try to read it from a location not mentioned in the data sheet. + */ +#define MBM29F400TC_STRANGE 0x23 +#define MBM29F400BC 0x7B +#define MBM29F400TC 0x77 #define HYUNDAI_ID 0xAD /* Hyundai */ -#define IMT_ID 0x7F /* IMT */ +#define IMT_ID 0x7F1F /* Integrated Memory Technologies */ +#define IM_29F004B 0xAE +#define IM_29F004T 0xAF #define INTEL_ID 0x89 /* Intel */ -#define ISSI_ID 0xD5 /* ISSI */ +#define ISSI_ID 0xD5 /* ISSI Integrated Silicon Solutions */ -#define MSYSTEMS_ID 0x156F /* M-Systems */ +#define MSYSTEMS_ID 0x156F /* M-Systems, not listed in JEP106W */ #define MSYSTEMS_MD2200 0xDB #define MSYSTEMS_MD2800 0x30 /* hmm -- both 0x30 */ #define MSYSTEMS_MD2802 0x30 /* hmm -- both 0x30 */ @@ -128,6 +135,9 @@ extern struct flashchip flashchips[]; #define MX_25L3235D 0x2416 #define MX_29F002 0xB0 +/* Programmable Micro Corp is listed in JEP106W in bank 2, so it should have + * a 0x7F continuation code prefix. + */ #define PMC_ID 0x9D /* PMC */ #define PMC_49FL002 0x6D #define PMC_49FL004 0x6E @@ -171,7 +181,7 @@ extern struct flashchip flashchips[]; * ST25P chips are SPI, first byte of device ID is memory type, second * byte of device ID is related to log(bitsize) at least for some chips. */ -#define ST_ID 0x20 /* ST */ +#define ST_ID 0x20 /* ST / SGS/Thomson */ #define ST_M25P05A 0x2010 #define ST_M25P10A 0x2011 #define ST_M25P20 0x2012 diff --git a/flashchips.c b/flashchips.c index 0f81b45..2bd039d 100644 --- a/flashchips.c +++ b/flashchips.c @@ -42,7 +42,7 @@ struct flashchip flashchips[] = { probe_jedec, erase_chip_jedec, write_jedec}, {"At49F002(N)T",ATMEL_ID, AT_49F002NT, 256, 256, probe_jedec, erase_chip_jedec, write_jedec}, - {"MBM29F400TC", FUJITSU_ID, MBM29F400TC, 512, 64 * 1024, + {"MBM29F400TC", FUJITSU_ID, MBM29F400TC_STRANGE, 512, 64 * 1024, probe_m29f400bt, erase_m29f400bt, write_linuxbios_m29f400bt}, {"MX29F002", MX_ID, MX_29F002, 256, 64 * 1024, probe_29f002, erase_29f002, write_29f002}, diff --git a/m29f400bt.c b/m29f400bt.c index 40b219c..7d8539f 100644 --- a/m29f400bt.c +++ b/m29f400bt.c @@ -64,6 +64,9 @@ int probe_m29f400bt(struct flashchip *flash) myusec_delay(10); id1 = *(volatile uint8_t *)bios; + /* The data sheet says id2 is at (bios + 0x01) and id2 listed in + * flash.h does not match. It should be possible to use JEDEC probe. + */ id2 = *(volatile uint8_t *)(bios + 0x02); *(volatile uint8_t *)(bios + 0xAAA) = 0xAA; |
