-/*
+/*
Common Flash Interface probe code.
(C) 2000 Red Hat. GPL'd.
- $Id: jedec_probe.c,v 1.61 2004/11/19 20:52:16 thayne Exp $
+ $Id: jedec_probe.c,v 1.66 2005/11/07 11:14:23 gleixner Exp $
See JEDEC (http://www.jedec.org/) standard JESD21C (section 3.5)
for the standard this probe goes back to.
#define MANUFACTURER_MACRONIX 0x00C2
#define MANUFACTURER_NEC 0x0010
#define MANUFACTURER_PMC 0x009D
+#define MANUFACTURER_SHARP 0x00b0
#define MANUFACTURER_SST 0x00BF
#define MANUFACTURER_ST 0x0020
#define MANUFACTURER_TOSHIBA 0x0098
#define PM49FL004 0x006E
#define PM49FL008 0x006A
+/* Sharp */
+#define LH28F640BF 0x00b0
+
/* ST - www.st.com */
#define M29W800DT 0x00D7
#define M29W800DB 0x005B
#define SST29LE512 0x003d
#define SST39LF800 0x2781
#define SST39LF160 0x2782
+#define SST39VF1601 0x234b
#define SST39LF512 0x00D4
#define SST39LF010 0x00D5
#define SST39LF020 0x00D6
.regions = {
ERASEINFO( 0x01000, 256 )
}
+ }, {
+ .mfr_id = MANUFACTURER_SHARP,
+ .dev_id = LH28F640BF,
+ .name = "LH28F640BF",
+ .uaddr = {
+ [0] = MTD_UADDR_UNNECESSARY, /* x8 */
+ },
+ .DevSize = SIZE_4MiB,
+ .CmdSet = P_ID_INTEL_STD,
+ .NumEraseRegions= 1,
+ .regions = {
+ ERASEINFO(0x40000,16),
+ }
}, {
.mfr_id = MANUFACTURER_SST,
.dev_id = SST39LF512,
ERASEINFO(0x1000,256),
ERASEINFO(0x1000,256)
}
+ }, {
+ .mfr_id = MANUFACTURER_SST, /* should be CFI */
+ .dev_id = SST39VF1601,
+ .name = "SST 39VF1601",
+ .uaddr = {
+ [0] = MTD_UADDR_0x5555_0x2AAA, /* x8 */
+ [1] = MTD_UADDR_0x5555_0x2AAA /* x16 */
+ },
+ .DevSize = SIZE_2MiB,
+ .CmdSet = P_ID_AMD_STD,
+ .NumEraseRegions= 2,
+ .regions = {
+ ERASEINFO(0x1000,256),
+ ERASEINFO(0x1000,256)
+ }
}, {
.mfr_id = MANUFACTURER_ST, /* FIXME - CFI device? */
static struct mtd_info *jedec_probe(struct map_info *map);
-static inline u32 jedec_read_mfr(struct map_info *map, __u32 base,
+static inline u32 jedec_read_mfr(struct map_info *map, __u32 base,
struct cfi_private *cfi)
{
map_word result;
return result.x[0] & mask;
}
-static inline u32 jedec_read_id(struct map_info *map, __u32 base,
+static inline u32 jedec_read_id(struct map_info *map, __u32 base,
struct cfi_private *cfi)
{
map_word result;
return result.x[0] & mask;
}
-static inline void jedec_reset(u32 base, struct map_info *map,
+static inline void jedec_reset(u32 base, struct map_info *map,
struct cfi_private *cfi)
{
/* Reset */
* so ensure we're in read mode. Send both the Intel and the AMD command
* for this. Intel uses 0xff for this, AMD uses 0xff for NOP, so
* this should be safe.
- */
+ */
cfi_send_gen_cmd(0xFF, 0, base, map, cfi, cfi->device_type, NULL);
/* FIXME - should have reset delay before continuing */
}
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));
+ 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;
case CFI_DEVICETYPE_X8:
mfr = (__u8)finfo->mfr_id;
id = (__u8)finfo->dev_id;
+
+ /* bjd: it seems that if we do this, we can end up
+ * detecting 16bit flashes as an 8bit device, even though
+ * there aren't.
+ */
+ if (finfo->dev_id > 0xff) {
+ DEBUG( MTD_DEBUG_LEVEL3, "%s(): ID is not 8bit\n",
+ __func__);
+ goto match_done;
+ }
break;
case CFI_DEVICETYPE_X16:
mfr = (__u16)finfo->mfr_id;
cfi_send_gen_cmd(0x90, cfi->addr_unlock1, base, map, cfi, cfi->device_type, NULL);
/* FIXME - should have a delay before continuing */
- match_done:
+ match_done:
return rc;
}
"Probe at base(0x%08x) past the end of the map(0x%08lx)\n",
base, map->size -1);
return 0;
-
+
}
/* Ensure the unlock addresses we try stay inside the map */
probe_offset1 = cfi_build_cmd_addr(
- cfi->addr_unlock1,
- cfi_interleave(cfi),
+ cfi->addr_unlock1,
+ cfi_interleave(cfi),
cfi->device_type);
probe_offset2 = cfi_build_cmd_addr(
- cfi->addr_unlock1,
- cfi_interleave(cfi),
+ cfi->addr_unlock1,
+ cfi_interleave(cfi),
cfi->device_type);
if ( ((base + probe_offset1 + map_bankwidth(map)) >= map->size) ||
((base + probe_offset2 + map_bankwidth(map)) >= map->size))
{
goto retry;
}
-
+
/* Reset */
jedec_reset(base, map, cfi);
/* FIXME - should have a delay before continuing */
if (!cfi->numchips) {
- /* This is the first time we're called. Set up the CFI
+ /* This is the first time we're called. Set up the CFI
stuff accordingly and return */
-
+
cfi->mfr = jedec_read_mfr(map, base, cfi);
cfi->id = jedec_read_id(map, base, cfi);
DEBUG(MTD_DEBUG_LEVEL3,
- "Search for id:(%02x %02x) interleave(%d) type(%d)\n",
+ "Search for id:(%02x %02x) interleave(%d) type(%d)\n",
cfi->mfr, cfi->id, cfi_interleave(cfi), cfi->device_type);
- for (i=0; i<sizeof(jedec_table)/sizeof(jedec_table[0]); i++) {
+ for (i = 0; i < ARRAY_SIZE(jedec_table); i++) {
if ( jedec_match( base, map, cfi, &jedec_table[i] ) ) {
DEBUG( MTD_DEBUG_LEVEL3,
"MTD %s(): matched device 0x%x,0x%x unlock_addrs: 0x%.4x 0x%.4x\n",
return 0;
}
}
-
+
/* Check each previous chip locations to see if it's an alias */
for (i=0; i < (base >> cfi->chipshift); i++) {
unsigned long start;
map->name, base, 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. */
}
}
}
-
+
/* OK, if we got to here, then none of the previous chips appear to
be aliases for the current one. */
set_bit((base >> cfi->chipshift), chip_map); /* Update chip map */
cfi->numchips++;
-
+
ok_out:
/* Put it back into Read Mode */
jedec_reset(base, map, cfi);
printk(KERN_INFO "%s: Found %d x%d devices at 0x%x in %d-bit bank\n",
- map->name, cfi_interleave(cfi), cfi->device_type*8, base,
+ map->name, cfi_interleave(cfi), cfi->device_type*8, base,
map->bankwidth*8);
-
+
return 1;
}
git://git.onelab.eu / linux-2.6.git / blobdiff