From: Armando Visconti armando.visconti@st.com
THis patch introduces a new methodology for flash probing in which flash_devices[] table, looked-up thru the dev_id, is used to locate the flash geometry and information.
Signed-off-by: Armando Visconti armando.visconti@st.com Signed-off-by: Amit Virdi amit.virdi@st.com --- drivers/mtd/st_smi.c | 92 +++++++++++++++++++++++++++++++++++--------------- 1 files changed, 65 insertions(+), 27 deletions(-)
diff --git a/drivers/mtd/st_smi.c b/drivers/mtd/st_smi.c index 43eb2ab..a308399 100644 --- a/drivers/mtd/st_smi.c +++ b/drivers/mtd/st_smi.c @@ -37,17 +37,61 @@ static ulong bank_base[CONFIG_SYS_MAX_FLASH_BANKS] = CONFIG_SYS_FLASH_ADDR_BASE; flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
-static struct flash_dev flash_ids[] = { - {0x10, 0x10000, 2}, /* 64K Byte */ - {0x11, 0x20000, 4}, /* 128K Byte */ - {0x12, 0x40000, 4}, /* 256K Byte */ - {0x13, 0x80000, 8}, /* 512K Byte */ - {0x14, 0x100000, 16}, /* 1M Byte */ - {0x15, 0x200000, 32}, /* 2M Byte */ - {0x16, 0x400000, 64}, /* 4M Byte */ - {0x17, 0x800000, 128}, /* 8M Byte */ - {0x18, 0x1000000, 64}, /* 16M Byte */ - {0x00,} +/* data structure to maintain flash ids from different vendors */ +struct flash_device { + char *name; + u8 erase_cmd; + u32 device_id; + u32 pagesize; + unsigned long sectorsize; + unsigned long size_in_bytes; +}; + +#define FLASH_ID(n, es, id, psize, ssize, size) \ +{ \ + .name = n, \ + .erase_cmd = es, \ + .device_id = id, \ + .pagesize = psize, \ + .sectorsize = ssize, \ + .size_in_bytes = size \ +} + +/* + * List of supported flash devices. + * Currently the erase_cmd field is not used in this driver. + */ +static struct flash_device flash_devices[] = { + FLASH_ID("st m25p16" , 0xd8, 0x00152020, 0x100, 0x10000, 0x200000), + FLASH_ID("st m25p32" , 0xd8, 0x00162020, 0x100, 0x10000, 0x400000), + FLASH_ID("st m25p64" , 0xd8, 0x00172020, 0x100, 0x10000, 0x800000), + FLASH_ID("st m25p128" , 0xd8, 0x00182020, 0x100, 0x40000, 0x1000000), + FLASH_ID("st m25p05" , 0xd8, 0x00102020, 0x80 , 0x8000 , 0x10000), + FLASH_ID("st m25p10" , 0xd8, 0x00112020, 0x80 , 0x8000 , 0x20000), + FLASH_ID("st m25p20" , 0xd8, 0x00122020, 0x100, 0x10000, 0x40000), + FLASH_ID("st m25p40" , 0xd8, 0x00132020, 0x100, 0x10000, 0x80000), + FLASH_ID("st m25p80" , 0xd8, 0x00142020, 0x100, 0x10000, 0x100000), + FLASH_ID("st m45pe10" , 0xd8, 0x00114020, 0x100, 0x10000, 0x20000), + FLASH_ID("st m45pe20" , 0xd8, 0x00124020, 0x100, 0x10000, 0x40000), + FLASH_ID("st m45pe40" , 0xd8, 0x00134020, 0x100, 0x10000, 0x80000), + FLASH_ID("st m45pe80" , 0xd8, 0x00144020, 0x100, 0x10000, 0x100000), + FLASH_ID("sp s25fl004" , 0xd8, 0x00120201, 0x100, 0x10000, 0x80000), + FLASH_ID("sp s25fl008" , 0xd8, 0x00130201, 0x100, 0x10000, 0x100000), + FLASH_ID("sp s25fl016" , 0xd8, 0x00140201, 0x100, 0x10000, 0x200000), + FLASH_ID("sp s25fl032" , 0xd8, 0x00150201, 0x100, 0x10000, 0x400000), + FLASH_ID("sp s25fl064" , 0xd8, 0x00160201, 0x100, 0x10000, 0x800000), + FLASH_ID("mac 25l512" , 0xd8, 0x001020C2, 0x010, 0x10000, 0x10000), + FLASH_ID("mac 25l1005" , 0xd8, 0x001120C2, 0x010, 0x10000, 0x20000), + FLASH_ID("mac 25l2005" , 0xd8, 0x001220C2, 0x010, 0x10000, 0x40000), + FLASH_ID("mac 25l4005" , 0xd8, 0x001320C2, 0x010, 0x10000, 0x80000), + FLASH_ID("mac 25l4005a" , 0xd8, 0x001320C2, 0x010, 0x10000, 0x80000), + FLASH_ID("mac 25l8005" , 0xd8, 0x001420C2, 0x010, 0x10000, 0x100000), + FLASH_ID("mac 25l1605" , 0xd8, 0x001520C2, 0x100, 0x10000, 0x200000), + FLASH_ID("mac 25l1605a" , 0xd8, 0x001520C2, 0x010, 0x10000, 0x200000), + FLASH_ID("mac 25l3205" , 0xd8, 0x001620C2, 0x100, 0x10000, 0x400000), + FLASH_ID("mac 25l3205a" , 0xd8, 0x001620C2, 0x100, 0x10000, 0x400000), + FLASH_ID("mac 25l6405" , 0xd8, 0x001720C2, 0x100, 0x10000, 0x800000), + FLASH_ID("wbd w25q128" , 0xd8, 0x001840EF, 0x1000, 0x10000, 0x1000000), };
/* @@ -105,9 +149,7 @@ static unsigned int smi_read_id(flash_info_t *info, int banknum) static ulong flash_get_size(ulong base, int banknum) { flash_info_t *info = &flash_info[banknum]; - struct flash_dev *dev; int value; - unsigned int density; int i;
value = smi_read_id(info, banknum); @@ -117,24 +159,20 @@ static ulong flash_get_size(ulong base, int banknum) return 0; }
- density = (value >> 16) & 0xff; + /* Matches chip-id to entire list of 'serial-nor flash' ids */ + for (i = 0; i < ARRAY_SIZE(flash_devices); i++) { + if (flash_devices[i].device_id == value) { + info->size = flash_devices[i].size_in_bytes; + info->flash_id = value; + info->start[0] = base; + info->sector_count = + info->size/flash_devices[i].sectorsize;
- for (i = 0, dev = &flash_ids[0]; dev->density != 0x0; - i++, dev = &flash_ids[i]) { - if (dev->density == density) { - info->size = dev->size; - info->sector_count = dev->sector_count; - break; + return info->size; } }
- if (dev->density == 0x0) - return 0; - - info->flash_id = value & 0xffff; - info->start[0] = base; - - return info->size; + return 0; }
/*