diff --git a/drivers/cfi_flash.c b/drivers/cfi_flash.c index fd0a186..9b10220 100644 --- a/drivers/cfi_flash.c +++ b/drivers/cfi_flash.c @@ -4,11 +4,12 @@ * * Copyright (C) 2003 Arabella Software Ltd. * Yuli Barcohen - * Modified to work with AMD flashes * * Copyright (C) 2004 * Ed Okerson - * Modified to work with little-endian systems. + * + * Copyright (C) 2006 + * Tolunay Orkun * * See file CREDITS for list of people who contributed to this * project. @@ -28,17 +29,6 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA * - * History - * 01/20/2004 - combined variants of original driver. - * 01/22/2004 - Write performance enhancements for parallel chips (Tolunay) - * 01/23/2004 - Support for x8/x16 chips (Rune Raknerud) - * 01/27/2004 - Little endian support Ed Okerson - * - * Tested Architectures - * Port Width Chip Width # of banks Flash Chip Board - * 32 16 1 28F128J3 seranoa/eagle - * 64 16 1 28F128J3 seranoa/falcon - * */ /* The DEBUG define must be before common to enable debugging */ @@ -54,21 +44,16 @@ * This file implements a Common Flash Interface (CFI) driver for U-Boot. * The width of the port and the width of the chips are determined at initialization. * These widths are used to calculate the address for access CFI data structures. - * It has been tested on an Intel Strataflash implementation and AMD 29F016D. * * References * JEDEC Standard JESD68 - Common Flash Interface (CFI) * JEDEC Standard JEP137-A Common Flash Interface (CFI) ID Codes * Intel Application Note 646 Common Flash Interface (CFI) and Command Sets * Intel 290667-008 3 Volt Intel StrataFlash Memory datasheet + * AMD CFI Specification, Release 2.0 December 1, 2001 + * AMD/Spansion Application Note: Migration from Single-byte to Three-byte + * Device IDs, Publication Number 25538 Revision A, November 8, 2001 * - * TODO - * - * Use Primary Extended Query table (PRI) and Alternate Algorithm Query - * Table (ALT) to determine if protection is available - * - * Add support for other command sets Use the PRI and ALT to determine command set - * Verify erase and program timeouts. */ #ifndef CFG_FLASH_BANKS_LIST @@ -114,6 +99,10 @@ #define AMD_ADDR_START ((info->portwidth == FLASH_CFI_8BIT) ? 0xAAA : 0x555) #define AMD_ADDR_ACK ((info->portwidth == FLASH_CFI_8BIT) ? 0x555 : 0x2AA) +#define FLASH_OFFSET_MANUFACTURER_ID 0x00 +#define FLASH_OFFSET_DEVICE_ID 0x01 +#define FLASH_OFFSET_DEVICE_ID2 0x0E +#define FLASH_OFFSET_DEVICE_ID3 0x0F #define FLASH_OFFSET_CFI 0x55 #define FLASH_OFFSET_CFI_RESP 0x10 #define FLASH_OFFSET_PRIMARY_VENDOR 0x13 @@ -135,25 +124,20 @@ #define FLASH_OFFSET_USER_PROTECTION 0x85 #define FLASH_OFFSET_INTEL_PROTECTION 0x81 - -#define FLASH_MAN_CFI 0x01000000 - -#define CFI_CMDSET_NONE 0 -#define CFI_CMDSET_INTEL_EXTENDED 1 -#define CFI_CMDSET_AMD_STANDARD 2 -#define CFI_CMDSET_INTEL_STANDARD 3 -#define CFI_CMDSET_AMD_EXTENDED 4 -#define CFI_CMDSET_MITSU_STANDARD 256 -#define CFI_CMDSET_MITSU_EXTENDED 257 -#define CFI_CMDSET_SST 258 - +#define CFI_CMDSET_NONE 0 +#define CFI_CMDSET_INTEL_EXTENDED 1 +#define CFI_CMDSET_AMD_STANDARD 2 +#define CFI_CMDSET_INTEL_STANDARD 3 +#define CFI_CMDSET_AMD_EXTENDED 4 +#define CFI_CMDSET_MITSU_STANDARD 256 +#define CFI_CMDSET_MITSU_EXTENDED 257 +#define CFI_CMDSET_SST 258 #ifdef CFG_FLASH_CFI_AMD_RESET /* needed for STM_ID_29W320DB on UC100 */ # undef FLASH_CMD_RESET -# define FLASH_CMD_RESET AMD_CMD_RESET /* use AMD-Reset instead */ +# define FLASH_CMD_RESET AMD_CMD_RESET /* use AMD-Reset instead */ #endif - typedef union { unsigned char c; unsigned short w; @@ -168,7 +152,7 @@ typedef union { volatile unsigned long long *llp; } cfiptr_t; -#define NUM_ERASE_REGIONS 4 +#define NUM_ERASE_REGIONS 4 /* max. number of erase regions */ /* use CFG_MAX_FLASH_BANKS_DETECT if defined */ #ifdef CFG_MAX_FLASH_BANKS_DETECT @@ -200,6 +184,7 @@ static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect); static int flash_isequal (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd); static int flash_isset (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd); static int flash_toggle (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd); +static void flash_read_jedec_ids (flash_info_t * info); static int flash_detect_cfi (flash_info_t * info); static int flash_write_cfiword (flash_info_t * info, ulong dest, cfiword_t cword); static int flash_full_status_check (flash_info_t * info, flash_sect_t sector, @@ -307,7 +292,7 @@ ushort flash_read_ushort (flash_info_t * info, flash_sect_t sect, uint offset) } /*----------------------------------------------------------------------- - * read a long word by picking the least significant byte of each maiximum + * read a long word by picking the least significant byte of each maximum * port size word. Swap for ppc format. */ ulong flash_read_long (flash_info_t * info, flash_sect_t sect, uint offset) @@ -529,14 +514,42 @@ void flash_print_info (flash_info_t * info) (info->portwidth << 3), (info->chipwidth << 3)); printf (" Size: %ld MB in %d Sectors\n", info->size >> 20, info->sector_count); - printf (" Erase timeout %ld ms, write timeout %ld ms, buffer write timeout %ld ms, buffer size %d\n", + printf (" "); + switch (info->vendor) { + case CFI_CMDSET_INTEL_STANDARD: + printf ("Intel Standard"); + break; + case CFI_CMDSET_INTEL_EXTENDED: + printf ("Intel Extended"); + break; + case CFI_CMDSET_AMD_STANDARD: + printf ("AMD Standard"); + break; + case CFI_CMDSET_AMD_EXTENDED: + printf ("AMD Extended"); + break; + default: + printf ("Unknown (%d)", info->vendor); + break; + } + printf (" command set, Manufacturer ID: 0x%02X, Device ID: 0x%02X", + info->manufacturer_id, info->device_id); + if (info->device_id == 0x7E) { + printf("%04X", info->device_id2); + } + printf ("\n Erase timeout: %ld ms, write timeout: %ld ms\n", info->erase_blk_tout, - info->write_tout, + info->write_tout); + if (info->buffer_size > 1) { + printf (" Buffer write timeout: %ld ms, buffer size: %d bytes\n", info->buffer_write_tout, info->buffer_size); + } - puts (" Sector Start Addresses:"); + puts ("\n Sector Start Addresses:"); for (i = 0; i < info->sector_count; ++i) { + if ((i % 5) == 0) + printf ("\n"); #ifdef CFG_FLASH_EMPTY_INFO int k; int size; @@ -560,18 +573,15 @@ void flash_print_info (flash_info_t * info) } } - if ((i % 5) == 0) - printf ("\n"); /* print empty and read-only info */ - printf (" %08lX%s%s", + printf (" %08lX %c %s ", info->start[i], - erased ? " E" : " ", - info->protect[i] ? "RO " : " "); + erased ? 'E' : ' ', + info->protect[i] ? "RO" : " "); #else /* ! CFG_FLASH_EMPTY_INFO */ - if ((i % 5) == 0) - printf ("\n "); - printf (" %08lX%s", - info->start[i], info->protect[i] ? " (RO)" : " "); + printf (" %08lX %s ", + info->start[i], + info->protect[i] ? "RO" : " "); #endif } putc ('\n'); @@ -1071,6 +1081,55 @@ static int flash_toggle (flash_info_t * info, flash_sect_t sect, uint offset, uc } /*----------------------------------------------------------------------- + * read jedec ids from device and set corresponding fields in info struct + * + * Note: assume cfi->vendor, cfi->portwidth and cfi->chipwidth are correct + * +*/ +static void flash_read_jedec_ids (flash_info_t * info) +{ + info->manufacturer_id = 0; + info->device_id = 0; + info->device_id2 = 0; + + switch (info->vendor) { + case CFI_CMDSET_INTEL_STANDARD: + case CFI_CMDSET_INTEL_EXTENDED: + flash_write_cmd(info, 0, 0, FLASH_CMD_RESET); + flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID); + udelay(1000); /* some flash are slow to respond */ + info->manufacturer_id = flash_read_uchar (info, + FLASH_OFFSET_MANUFACTURER_ID); + info->device_id = flash_read_uchar (info, + FLASH_OFFSET_DEVICE_ID); + flash_write_cmd(info, 0, 0, FLASH_CMD_RESET); + break; + case CFI_CMDSET_AMD_STANDARD: + case CFI_CMDSET_AMD_EXTENDED: + flash_write_cmd(info, 0, 0, AMD_CMD_RESET); + flash_unlock_seq(info, 0); + flash_write_cmd(info, 0, AMD_ADDR_START, FLASH_CMD_READ_ID); + udelay(1000); /* some flash are slow to respond */ + info->manufacturer_id = flash_read_uchar (info, + FLASH_OFFSET_MANUFACTURER_ID); + info->device_id = flash_read_uchar (info, + FLASH_OFFSET_DEVICE_ID); + if (info->device_id == 0x7E) { + /* AMD 3-byte (expanded) device ids */ + info->device_id2 = flash_read_uchar (info, + FLASH_OFFSET_DEVICE_ID2); + info->device_id2 <<= 8; + info->device_id2 |= flash_read_uchar (info, + FLASH_OFFSET_DEVICE_ID3); + } + flash_write_cmd(info, 0, 0, AMD_CMD_RESET); + break; + default: + break; + } +} + +/*----------------------------------------------------------------------- * detect if flash is compatible with the Common Flash Interface (CFI) * http://www.jedec.org/download/search/jesd68.pdf * @@ -1120,15 +1179,31 @@ ulong flash_get_size (ulong base, int banknum) uchar num_erase_regions; int erase_region_size; int erase_region_count; + int geometry_reversed = 0; + + info->ext_addr = 0; + info->cfi_version = 0; #ifdef CFG_FLASH_PROTECTION - int ext_addr; info->legacy_unlock = 0; #endif info->start[0] = base; if (flash_detect_cfi (info)) { - info->vendor = flash_read_ushort (info, 0, FLASH_OFFSET_PRIMARY_VENDOR); + info->vendor = flash_read_ushort (info, 0, + FLASH_OFFSET_PRIMARY_VENDOR); + flash_read_jedec_ids (info); + flash_write_cmd (info, 0, FLASH_OFFSET_CFI, FLASH_CMD_CFI); + num_erase_regions = flash_read_uchar (info, + FLASH_OFFSET_NUM_ERASE_REGIONS); + info->ext_addr = flash_read_ushort (info, 0, + FLASH_OFFSET_EXT_QUERY_T_P_ADDR); + if (info->ext_addr) { + info->cfi_version = (ushort) flash_read_uchar (info, + info->ext_addr + 3) << 8; + info->cfi_version |= (ushort) flash_read_uchar (info, + info->ext_addr + 4); + } #ifdef DEBUG flash_printqry (info, 0); #endif @@ -1139,26 +1214,46 @@ ulong flash_get_size (ulong base, int banknum) info->cmd_reset = FLASH_CMD_RESET; #ifdef CFG_FLASH_PROTECTION /* read legacy lock/unlock bit from intel flash */ - ext_addr = flash_read_ushort (info, 0, - FLASH_OFFSET_EXT_QUERY_T_P_ADDR); - info->legacy_unlock = - flash_read_uchar (info, ext_addr + 5) & 0x08; + if (info->ext_addr) { + info->legacy_unlock = flash_read_uchar (info, + info->ext_addr + 5) & 0x08; + } #endif break; case CFI_CMDSET_AMD_STANDARD: case CFI_CMDSET_AMD_EXTENDED: info->cmd_reset = AMD_CMD_RESET; + /* check if flash geometry needs reversal */ + if (num_erase_regions <= 1) + break; + /* reverse geometry if top boot part */ + if (info->cfi_version < 0x3131) { + /* CFI < 1.1, try to guess from device id */ + if ((info->device_id & 0x80) != 0) { + geometry_reversed = 1; + } + break; + } + /* CFI >= 1.1, deduct from top/bottom flag */ + /* note: ext_addr is valid since cfi_version > 0 */ + if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) { + geometry_reversed = 1; + } break; } debug ("manufacturer is %d\n", info->vendor); + debug ("manufacturer id is 0x%x\n", info->manufacturer_id); + debug ("device id is 0x%x\n", info->device_id); + debug ("device id2 is 0x%x\n", info->device_id2); + debug ("cfi version is 0x%04x\n", info->cfi_version); + size_ratio = info->portwidth / info->chipwidth; /* if the chip is x8/x16 reduce the ratio by half */ if ((info->interface == FLASH_CFI_X8X16) && (info->chipwidth == FLASH_CFI_BY8)) { size_ratio >>= 1; } - num_erase_regions = flash_read_uchar (info, FLASH_OFFSET_NUM_ERASE_REGIONS); debug ("size_ratio %d port %d bits chip %d bits\n", size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH, info->chipwidth << CFI_FLASH_SHIFT_WIDTH); @@ -1171,7 +1266,12 @@ ulong flash_get_size (ulong base, int banknum) num_erase_regions, NUM_ERASE_REGIONS); break; } - tmp = flash_read_long (info, 0, + if (geometry_reversed) + tmp = flash_read_long (info, 0, + FLASH_OFFSET_ERASE_REGIONS + + (num_erase_regions - 1 - i) * 4); + else + tmp = flash_read_long (info, 0, FLASH_OFFSET_ERASE_REGIONS + i * 4); erase_region_size = diff --git a/include/flash.h b/include/flash.h index d91589a..9c57cbc 100644 --- a/include/flash.h +++ b/include/flash.h @@ -43,9 +43,14 @@ typedef struct { ulong write_tout; /* maximum write timeout */ ulong buffer_write_tout; /* maximum buffer write timeout */ ushort vendor; /* the primary vendor id */ - ushort cmd_reset; /* Vendor specific reset command */ + ushort cmd_reset; /* vendor specific reset command */ ushort interface; /* used for x8/x16 adjustments */ ushort legacy_unlock; /* support Intel legacy (un)locking */ + uchar manufacturer_id; /* manufacturer id */ + ushort device_id; /* device id */ + ushort device_id2; /* extended device id */ + ushort ext_addr; /* extended query table address */ + ushort cfi_version; /* cfi version */ #endif } flash_info_t; @@ -439,6 +444,7 @@ extern void flash_read_factory_serial(flash_info_t * info, void * buffer, int of #define FLASH_MAN_MT 0x00400000 #define FLASH_MAN_SHARP 0x00500000 #define FLASH_MAN_ATM 0x00600000 +#define FLASH_MAN_CFI 0x01000000 #define FLASH_TYPEMASK 0x0000FFFF /* extract FLASH type information */