/* Common Flash Interface probe code. (C) 2000 Red Hat. GPL'd. $Id: jedec_probe.c,v 1.1.1.1 2003/06/23 22:18:28 jharrell Exp $ */ #include #include #include #include #include #include #include #include #include #include #include #include /* Manufacturers */ #define MANUFACTURER_AMD 0x0001 #define MANUFACTURER_FUJITSU 0x0004 #define MANUFACTURER_ATMEL 0x001f #define MANUFACTURER_ST 0x0020 #define MANUFACTURER_INTEL 0x0089 #define MANUFACTURER_TOSHIBA 0x0098 #define MANUFACTURER_SST 0x00BF /* AMD */ #define AM29F800BB 0x2258 #define AM29F800BT 0x22D6 #define AM29LV800BB 0x225B #define AM29LV800BT 0x22DA #define AM29LV160DT 0x22C4 #define AM29LV160DB 0x2249 /* Atmel */ #define AT49BV16X4 0x00c0 #define AT49BV16X4T 0x00c2 /* Fujitsu */ #define MBM29LV160TE 0x22C4 #define MBM29LV160BE 0x2249 /* Intel */ #define I28F004B3T 0x00d4 #define I28F004B3B 0x00d5 #define I28F400B3T 0x8894 #define I28F400B3B 0x8895 #define I28F008SA 0x00a2 #define I28F008B3T 0x00d2 #define I28F008B3B 0x00d3 #define I28F800B3T 0x8892 #define I28F800B3B 0x8893 #define I28F016B3T 0x00d0 #define I28F016B3B 0x00d1 #define I28F160B3T 0x8890 #define I28F160B3B 0x8891 #define I28F320B3T 0x8896 #define I28F320B3B 0x8897 #define I28F640B3T 0x8898 #define I28F640B3B 0x8899 /* ST - www.st.com */ #define M29W800T 0x00D7 #define M29W160DT 0x22C4 #define M29W160DB 0x2249 /* SST */ #define SST39LF800 0x2781 #define SST39LF160 0x2782 /* Toshiba */ #define TC58FVT160 0x00C2 #define TC58FVB160 0x0043 struct amd_flash_info { const __u16 mfr_id; const __u16 dev_id; const char *name; const int DevSize; const int InterfaceDesc; const int NumEraseRegions; const int CmdSet; const ulong regions[4]; }; #define ERASEINFO(size,blocks) (size<<8)|(blocks-1) #define SIZE_512KiB 19 #define SIZE_1MiB 20 #define SIZE_2MiB 21 #define SIZE_4MiB 22 #define SIZE_8MiB 23 static const struct amd_flash_info jedec_table[] = { { mfr_id: MANUFACTURER_AMD, dev_id: AM29LV160DT, name: "AMD AM29LV160DT", DevSize: SIZE_2MiB, CmdSet: P_ID_AMD_STD, NumEraseRegions: 4, regions: {ERASEINFO(0x10000,31), ERASEINFO(0x08000,1), ERASEINFO(0x02000,2), ERASEINFO(0x04000,1) } }, { mfr_id: MANUFACTURER_AMD, dev_id: AM29LV160DB, name: "AMD AM29LV160DB", DevSize: SIZE_2MiB, CmdSet: P_ID_AMD_STD, NumEraseRegions: 4, regions: {ERASEINFO(0x04000,1), ERASEINFO(0x02000,2), ERASEINFO(0x08000,1), ERASEINFO(0x10000,31) } }, { mfr_id: MANUFACTURER_TOSHIBA, dev_id: TC58FVT160, name: "Toshiba TC58FVT160", DevSize: SIZE_2MiB, CmdSet: P_ID_AMD_STD, NumEraseRegions: 4, regions: {ERASEINFO(0x10000,31), ERASEINFO(0x08000,1), ERASEINFO(0x02000,2), ERASEINFO(0x04000,1) } }, { mfr_id: MANUFACTURER_FUJITSU, dev_id: MBM29LV160TE, name: "Fujitsu MBM29LV160TE", DevSize: SIZE_2MiB, CmdSet: P_ID_AMD_STD, NumEraseRegions: 4, regions: {ERASEINFO(0x10000,31), ERASEINFO(0x08000,1), ERASEINFO(0x02000,2), ERASEINFO(0x04000,1) } }, { mfr_id: MANUFACTURER_TOSHIBA, dev_id: TC58FVB160, name: "Toshiba TC58FVB160", DevSize: SIZE_2MiB, CmdSet: P_ID_AMD_STD, NumEraseRegions: 4, regions: {ERASEINFO(0x04000,1), ERASEINFO(0x02000,2), ERASEINFO(0x08000,1), ERASEINFO(0x10000,31) } }, { mfr_id: MANUFACTURER_FUJITSU, dev_id: MBM29LV160BE, name: "Fujitsu MBM29LV160BE", DevSize: SIZE_2MiB, CmdSet: P_ID_AMD_STD, NumEraseRegions: 4, regions: {ERASEINFO(0x04000,1), ERASEINFO(0x02000,2), ERASEINFO(0x08000,1), ERASEINFO(0x10000,31) } }, { mfr_id: MANUFACTURER_AMD, dev_id: AM29LV800BB, name: "AMD AM29LV800BB", DevSize: SIZE_1MiB, CmdSet: P_ID_AMD_STD, NumEraseRegions: 4, regions: {ERASEINFO(0x04000,1), ERASEINFO(0x02000,2), ERASEINFO(0x08000,1), ERASEINFO(0x10000,15), } }, { mfr_id: MANUFACTURER_AMD, dev_id: AM29F800BB, name: "AMD AM29F800BB", DevSize: SIZE_1MiB, CmdSet: P_ID_AMD_STD, NumEraseRegions: 4, regions: {ERASEINFO(0x04000,1), ERASEINFO(0x02000,2), ERASEINFO(0x08000,1), ERASEINFO(0x10000,15), } }, { mfr_id: MANUFACTURER_AMD, dev_id: AM29LV800BT, name: "AMD AM29LV800BT", DevSize: SIZE_1MiB, CmdSet: P_ID_AMD_STD, NumEraseRegions: 4, regions: {ERASEINFO(0x10000,15), ERASEINFO(0x08000,1), ERASEINFO(0x02000,2), ERASEINFO(0x04000,1) } }, { mfr_id: MANUFACTURER_AMD, dev_id: AM29F800BT, name: "AMD AM29F800BT", DevSize: SIZE_1MiB, CmdSet: P_ID_AMD_STD, NumEraseRegions: 4, regions: {ERASEINFO(0x10000,15), ERASEINFO(0x08000,1), ERASEINFO(0x02000,2), ERASEINFO(0x04000,1) } }, { mfr_id: MANUFACTURER_AMD, dev_id: AM29LV800BB, name: "AMD AM29LV800BB", DevSize: SIZE_1MiB, CmdSet: P_ID_AMD_STD, NumEraseRegions: 4, regions: {ERASEINFO(0x10000,15), ERASEINFO(0x08000,1), ERASEINFO(0x02000,2), ERASEINFO(0x04000,1) } }, { mfr_id: MANUFACTURER_INTEL, dev_id: I28F004B3B, name: "Intel 28F004B3B", DevSize: SIZE_512KiB, CmdSet: P_ID_INTEL_STD, NumEraseRegions: 2, regions: { ERASEINFO(0x02000, 8), ERASEINFO(0x10000, 7), } }, { mfr_id: MANUFACTURER_INTEL, dev_id: I28F004B3T, name: "Intel 28F004B3T", DevSize: SIZE_512KiB, CmdSet: P_ID_INTEL_STD, NumEraseRegions: 2, regions: { ERASEINFO(0x10000, 7), ERASEINFO(0x02000, 8), } }, { mfr_id: MANUFACTURER_INTEL, dev_id: I28F400B3B, name: "Intel 28F400B3B", DevSize: SIZE_512KiB, CmdSet: P_ID_INTEL_STD, NumEraseRegions: 2, regions: { ERASEINFO(0x02000, 8), ERASEINFO(0x10000, 7), } }, { mfr_id: MANUFACTURER_INTEL, dev_id: I28F400B3T, name: "Intel 28F400B3T", DevSize: SIZE_512KiB, CmdSet: P_ID_INTEL_STD, NumEraseRegions: 2, regions: { ERASEINFO(0x10000, 7), ERASEINFO(0x02000, 8), } }, { mfr_id: MANUFACTURER_INTEL, dev_id: I28F008B3B, name: "Intel 28F008B3B", DevSize: SIZE_1MiB, CmdSet: P_ID_INTEL_STD, NumEraseRegions: 2, regions: { ERASEINFO(0x02000, 8), ERASEINFO(0x10000, 15), } }, { mfr_id: MANUFACTURER_INTEL, dev_id: I28F008B3T, name: "Intel 28F008B3T", DevSize: SIZE_1MiB, CmdSet: P_ID_INTEL_STD, NumEraseRegions: 2, regions: { ERASEINFO(0x10000, 15), ERASEINFO(0x02000, 8), } }, { mfr_id: MANUFACTURER_INTEL, dev_id: I28F008SA, name: "Intel 28F008SA", DevSize: SIZE_1MiB, CmdSet: P_ID_INTEL_STD, NumEraseRegions: 1, regions: { ERASEINFO(0x10000, 16), } }, { mfr_id: MANUFACTURER_INTEL, dev_id: I28F800B3B, name: "Intel 28F800B3B", DevSize: SIZE_1MiB, CmdSet: P_ID_INTEL_STD, NumEraseRegions: 2, regions: { ERASEINFO(0x02000, 8), ERASEINFO(0x10000, 15), } }, { mfr_id: MANUFACTURER_INTEL, dev_id: I28F800B3T, name: "Intel 28F800B3T", DevSize: SIZE_1MiB, CmdSet: P_ID_INTEL_STD, NumEraseRegions: 2, regions: { ERASEINFO(0x10000, 15), ERASEINFO(0x02000, 8), } }, { mfr_id: MANUFACTURER_INTEL, dev_id: I28F016B3B, name: "Intel 28F016B3B", DevSize: SIZE_2MiB, CmdSet: P_ID_INTEL_STD, NumEraseRegions: 2, regions: { ERASEINFO(0x02000, 8), ERASEINFO(0x10000, 31), } }, { mfr_id: MANUFACTURER_INTEL, dev_id: I28F016B3T, name: "Intel 28F016B3T", DevSize: SIZE_2MiB, CmdSet: P_ID_INTEL_STD, NumEraseRegions: 2, regions: { ERASEINFO(0x10000, 31), ERASEINFO(0x02000, 8), } }, { mfr_id: MANUFACTURER_INTEL, dev_id: I28F160B3B, name: "Intel 28F160B3B", DevSize: SIZE_2MiB, CmdSet: P_ID_INTEL_STD, NumEraseRegions: 2, regions: { ERASEINFO(0x02000, 8), ERASEINFO(0x10000, 31), } }, { mfr_id: MANUFACTURER_INTEL, dev_id: I28F160B3T, name: "Intel 28F160B3T", DevSize: SIZE_2MiB, CmdSet: P_ID_INTEL_STD, NumEraseRegions: 2, regions: { ERASEINFO(0x10000, 31), ERASEINFO(0x02000, 8), } }, { mfr_id: MANUFACTURER_INTEL, dev_id: I28F320B3B, name: "Intel 28F320B3B", DevSize: SIZE_4MiB, CmdSet: P_ID_INTEL_STD, NumEraseRegions: 2, regions: { ERASEINFO(0x02000, 8), ERASEINFO(0x10000, 63), } }, { mfr_id: MANUFACTURER_INTEL, dev_id: I28F320B3T, name: "Intel 28F320B3T", DevSize: SIZE_4MiB, CmdSet: P_ID_INTEL_STD, NumEraseRegions: 2, regions: { ERASEINFO(0x10000, 63), ERASEINFO(0x02000, 8), } }, { mfr_id: MANUFACTURER_INTEL, dev_id: I28F640B3B, name: "Intel 28F640B3B", DevSize: SIZE_8MiB, CmdSet: P_ID_INTEL_STD, NumEraseRegions: 2, regions: { ERASEINFO(0x02000, 8), ERASEINFO(0x10000, 127), } }, { mfr_id: MANUFACTURER_INTEL, dev_id: I28F640B3T, name: "Intel 28F640B3T", DevSize: SIZE_8MiB, CmdSet: P_ID_INTEL_STD, NumEraseRegions: 2, regions: { ERASEINFO(0x10000, 127), ERASEINFO(0x02000, 8), } }, { mfr_id: MANUFACTURER_ST, dev_id: M29W800T, name: "ST M29W800T", DevSize: SIZE_1MiB, CmdSet: P_ID_AMD_STD, NumEraseRegions: 4, regions: {ERASEINFO(0x10000,15), ERASEINFO(0x08000,1), ERASEINFO(0x02000,2), ERASEINFO(0x04000,1) } }, { mfr_id: MANUFACTURER_ST, dev_id: M29W160DT, name: "ST M29W160DT", DevSize: SIZE_2MiB, CmdSet: P_ID_AMD_STD, NumEraseRegions: 4, regions: {ERASEINFO(0x10000,31), ERASEINFO(0x08000,1), ERASEINFO(0x02000,2), ERASEINFO(0x04000,1) } }, { mfr_id: MANUFACTURER_ST, dev_id: M29W160DB, name: "ST M29W160DB", DevSize: SIZE_2MiB, CmdSet: P_ID_AMD_STD, NumEraseRegions: 4, regions: {ERASEINFO(0x04000,1), ERASEINFO(0x02000,2), ERASEINFO(0x08000,1), ERASEINFO(0x10000,31) } }, { mfr_id: MANUFACTURER_ATMEL, dev_id: AT49BV16X4, name: "Atmel AT49BV16X4", DevSize: SIZE_2MiB, CmdSet: P_ID_AMD_STD, NumEraseRegions: 3, regions: {ERASEINFO(0x02000,8), ERASEINFO(0x08000,2), ERASEINFO(0x10000,30) } }, { mfr_id: MANUFACTURER_ATMEL, dev_id: AT49BV16X4T, name: "Atmel AT49BV16X4T", DevSize: SIZE_2MiB, CmdSet: P_ID_AMD_STD, NumEraseRegions: 3, regions: {ERASEINFO(0x10000,30), ERASEINFO(0x08000,2), ERASEINFO(0x02000,8) } } }; static int cfi_jedec_setup(struct cfi_private *p_cfi, int index); static int jedec_probe_chip(struct map_info *map, __u32 base, struct flchip *chips, struct cfi_private *cfi); struct mtd_info *jedec_probe(struct map_info *map); #define jedec_read_mfr(map, base, osf) cfi_read(map, base) #define jedec_read_id(map, base, osf) cfi_read(map, (base)+(osf)) static int cfi_jedec_setup(struct cfi_private *p_cfi, int index) { int i,num_erase_regions; printk("Found: %s\n",jedec_table[index].name); num_erase_regions = jedec_table[index].NumEraseRegions; p_cfi->cfiq = kmalloc(sizeof(struct cfi_ident) + num_erase_regions * 4, GFP_KERNEL); if (!p_cfi->cfiq) { //xx printk(KERN_WARNING "%s: kmalloc failed for CFI ident structure\n", map->name); return 0; } memset(p_cfi->cfiq,0,sizeof(struct cfi_ident)); p_cfi->cfiq->P_ID = jedec_table[index].CmdSet; p_cfi->cfiq->NumEraseRegions = jedec_table[index].NumEraseRegions; p_cfi->cfiq->DevSize = jedec_table[index].DevSize; for (i=0; icfiq->EraseRegionInfo[i] = jedec_table[index].regions[i]; } if (p_cfi->cfiq->P_ID == P_ID_INTEL_STD || p_cfi->cfiq->P_ID == P_ID_INTEL_EXT) { struct cfi_pri_intelext *extp; extp = kmalloc(sizeof(*extp), GFP_KERNEL); if (!extp) { kfree(p_cfi->cfiq); return 0; } memset(extp, 0, sizeof(*extp)); p_cfi->cmdset_priv = extp; } return 1; /* ok */ } static int jedec_probe_chip(struct map_info *map, __u32 base, struct flchip *chips, struct cfi_private *cfi) { int i; int osf = cfi->interleave * cfi->device_type; int retried = 0; if (!cfi->numchips) { switch (cfi->device_type) { case CFI_DEVICETYPE_X8: cfi->addr_unlock1 = 0x555; cfi->addr_unlock2 = 0x2aa; break; case CFI_DEVICETYPE_X16: cfi->addr_unlock1 = 0xaaa; if (map->buswidth == cfi->interleave) { /* X16 chip(s) in X8 mode */ cfi->addr_unlock2 = 0x555; } else { cfi->addr_unlock2 = 0x554; } break; case CFI_DEVICETYPE_X32: cfi->addr_unlock1 = 0x1555; cfi->addr_unlock2 = 0xaaa; break; default: printk(KERN_NOTICE "Eep. Unknown jedec_probe device type %d\n", cfi->device_type); return 0; } } retry: /* Reset */ cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL); /* Ensure we're in read mode - Intel uses 0xff for this, AMD uses 0xff for NOP */ cfi_send_gen_cmd(0xff, 0, base, map, cfi, cfi->device_type, NULL); /* Autoselect Mode */ cfi_send_gen_cmd(0xaa, cfi->addr_unlock1, base, map, cfi, CFI_DEVICETYPE_X8, NULL); cfi_send_gen_cmd(0x55, cfi->addr_unlock2, base, map, cfi, CFI_DEVICETYPE_X8, NULL); cfi_send_gen_cmd(0x90, cfi->addr_unlock1, base, map, cfi, CFI_DEVICETYPE_X8, NULL); if (!cfi->numchips) { __u32 mfr, id; /* This is the first time we're called. Set up the CFI stuff accordingly and return */ cfi->mfr = mfr = jedec_read_mfr(map, base, osf); cfi->id = id = jedec_read_id(map, base, osf); mfr &= (1 << (cfi->device_type * 8)) - 1; id &= (1 << (cfi->device_type * 8)) - 1; for (i=0; iaddr_unlock1 |= cfi->addr_unlock1 << 8; cfi->addr_unlock2 |= cfi->addr_unlock2 << 8; goto retry; } return 0; } /* Check each previous chip to see if it's an alias */ for (i=0; inumchips; i++) { /* This chip should be in read mode if it's one we've already touched. */ if (jedec_read_mfr(map, chips[i].start, osf) == cfi->mfr && jedec_read_id(map, chips[i].start, osf) == cfi->id) { /* Eep. This chip also looks like it's in autoselect mode. Is it an alias for the new one? */ cfi_send_gen_cmd(0xF0, 0, chips[i].start, map, cfi, cfi->device_type, NULL); cfi_send_gen_cmd(0xff, 0, chips[i].start, map, cfi, cfi->device_type, NULL); /* If the device IDs go away, it's an alias */ if (jedec_read_mfr(map, base, osf) != cfi->mfr || jedec_read_id(map, base, osf) != cfi->id) { printk(KERN_DEBUG "%s: Found an alias at 0x%x for the chip at 0x%lx\n", map->name, base, chips[i].start); return 0; } /* Yes, it's actually got the device IDs as data. Most * unfortunate. Stick the new chip in read mode * too and if it's the same, assume it's an alias. */ /* FIXME: Use other modes to do a proper check */ cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL); cfi_send_gen_cmd(0xff, 0, base, map, cfi, cfi->device_type, NULL); if (jedec_read_mfr(map, base, osf) == cfi->mfr && jedec_read_id(map, base, osf) == cfi->id) { printk(KERN_DEBUG "%s: Found an alias at 0x%x for the chip at 0x%lx\n", map->name, base, chips[i].start); return 0; } } } /* OK, if we got to here, then none of the previous chips appear to be aliases for the current one. */ if (cfi->numchips == MAX_CFI_CHIPS) { printk(KERN_WARNING"%s: Too many flash chips detected. Increase MAX_CFI_CHIPS from %d.\n", map->name, MAX_CFI_CHIPS); /* Doesn't matter about resetting it to Read Mode - we're not going to talk to it anyway */ return -1; } chips[cfi->numchips].start = base; chips[cfi->numchips].state = FL_READY; cfi->numchips++; ok_out: /* Put it back into Read Mode */ cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL); cfi_send_gen_cmd(0xff, 0, base, map, cfi, cfi->device_type, NULL); printk(KERN_INFO "%s: Found %d x%d devices at 0x%x in %d-bit mode\n", map->name, cfi->interleave, cfi->device_type*8, base, map->buswidth*8); return 1; } static struct chip_probe jedec_chip_probe = { name: "JEDEC", probe_chip: jedec_probe_chip }; struct mtd_info *jedec_probe(struct map_info *map) { /* * Just use the generic probe stuff to call our CFI-specific * chip_probe routine in all the possible permutations, etc. */ return mtd_do_chip_probe(map, &jedec_chip_probe); } static struct mtd_chip_driver jedec_chipdrv = { probe: jedec_probe, name: "jedec_probe", module: THIS_MODULE }; int __init jedec_probe_init(void) { register_mtd_chip_driver(&jedec_chipdrv); return 0; } static void __exit jedec_probe_exit(void) { unregister_mtd_chip_driver(&jedec_chipdrv); } module_init(jedec_probe_init); module_exit(jedec_probe_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Erwin Authried et al."); MODULE_DESCRIPTION("Probe code for JEDEC-compliant flash chips");