/* * (C) Copyright 2007 * Michael Schwingen, <michael@schwingen.org> * * based in great part on jedec_probe.c from linux kernel: * (C) 2000 Red Hat. GPL'd. * Occasionally maintained by Thayne Harbaugh tharbaugh at lnxi dot com * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA * */ /* The DEBUG define must be before common to enable debugging */ /*#define DEBUG*/ #include <common.h> #include <asm/processor.h> #include <asm/io.h> #include <asm/byteorder.h> #include <environment.h> #define P_ID_AMD_STD CFI_CMDSET_AMD_LEGACY /* AMD */ #define AM29DL800BB 0x22CB #define AM29DL800BT 0x224A #define AM29F800BB 0x2258 #define AM29F800BT 0x22D6 #define AM29LV400BB 0x22BA #define AM29LV400BT 0x22B9 #define AM29LV800BB 0x225B #define AM29LV800BT 0x22DA #define AM29LV160DT 0x22C4 #define AM29LV160DB 0x2249 #define AM29F017D 0x003D #define AM29F016D 0x00AD #define AM29F080 0x00D5 #define AM29F040 0x00A4 #define AM29LV040B 0x004F #define AM29F032B 0x0041 #define AM29F002T 0x00B0 /* SST */ #define SST39LF800 0x2781 #define SST39LF160 0x2782 #define SST39VF1601 0x234b #define SST39LF512 0x00D4 #define SST39LF010 0x00D5 #define SST39LF020 0x00D6 #define SST39LF040 0x00D7 #define SST39SF010A 0x00B5 #define SST39SF020A 0x00B6 /* * Unlock address sets for AMD command sets. * Intel command sets use the MTD_UADDR_UNNECESSARY. * Each identifier, except MTD_UADDR_UNNECESSARY, and * MTD_UADDR_NO_SUPPORT must be defined below in unlock_addrs[]. * MTD_UADDR_NOT_SUPPORTED must be 0 so that structure * initialization need not require initializing all of the * unlock addresses for all bit widths. */ enum uaddr { MTD_UADDR_NOT_SUPPORTED = 0, /* data width not supported */ MTD_UADDR_0x0555_0x02AA, MTD_UADDR_0x0555_0x0AAA, MTD_UADDR_0x5555_0x2AAA, MTD_UADDR_0x0AAA_0x0555, MTD_UADDR_DONT_CARE, /* Requires an arbitrary address */ MTD_UADDR_UNNECESSARY, /* Does not require any address */ }; struct unlock_addr { u32 addr1; u32 addr2; }; /* * I don't like the fact that the first entry in unlock_addrs[] * exists, but is for MTD_UADDR_NOT_SUPPORTED - and, therefore, * should not be used. The problem is that structures with * initializers have extra fields initialized to 0. It is _very_ * desireable to have the unlock address entries for unsupported * data widths automatically initialized - that means that * MTD_UADDR_NOT_SUPPORTED must be 0 and the first entry here * must go unused. */ static const struct unlock_addr unlock_addrs[] = { [MTD_UADDR_NOT_SUPPORTED] = { .addr1 = 0xffff, .addr2 = 0xffff }, [MTD_UADDR_0x0555_0x02AA] = { .addr1 = 0x0555, .addr2 = 0x02aa }, [MTD_UADDR_0x0555_0x0AAA] = { .addr1 = 0x0555, .addr2 = 0x0aaa }, [MTD_UADDR_0x5555_0x2AAA] = { .addr1 = 0x5555, .addr2 = 0x2aaa }, [MTD_UADDR_0x0AAA_0x0555] = { .addr1 = 0x0AAA, .addr2 = 0x0555 }, [MTD_UADDR_DONT_CARE] = { .addr1 = 0x0000, /* Doesn't matter which address */ .addr2 = 0x0000 /* is used - must be last entry */ }, [MTD_UADDR_UNNECESSARY] = { .addr1 = 0x0000, .addr2 = 0x0000 } }; struct amd_flash_info { const __u16 mfr_id; const __u16 dev_id; const char *name; const int DevSize; const int NumEraseRegions; const int CmdSet; const __u8 uaddr[4]; /* unlock addrs for 8, 16, 32, 64 */ const ulong regions[6]; }; #define ERASEINFO(size,blocks) (size<<8)|(blocks-1) #define SIZE_64KiB 16 #define SIZE_128KiB 17 #define SIZE_256KiB 18 #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[] = { #ifdef CONFIG_SYS_FLASH_LEGACY_256Kx8 { .mfr_id = (u16)SST_MANUFACT, .dev_id = SST39LF020, .name = "SST 39LF020", .uaddr = { [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */ }, .DevSize = SIZE_256KiB, .CmdSet = P_ID_AMD_STD, .NumEraseRegions= 1, .regions = { ERASEINFO(0x01000,64), } }, #endif #ifdef CONFIG_SYS_FLASH_LEGACY_512Kx8 { .mfr_id = (u16)AMD_MANUFACT, .dev_id = AM29LV040B, .name = "AMD AM29LV040B", .uaddr = { [0] = MTD_UADDR_0x0555_0x02AA /* x8 */ }, .DevSize = SIZE_512KiB, .CmdSet = P_ID_AMD_STD, .NumEraseRegions= 1, .regions = { ERASEINFO(0x10000,8), } }, { .mfr_id = (u16)SST_MANUFACT, .dev_id = SST39LF040, .name = "SST 39LF040", .uaddr = { [0] = MTD_UADDR_0x5555_0x2AAA /* x8 */ }, .DevSize = SIZE_512KiB, .CmdSet = P_ID_AMD_STD, .NumEraseRegions= 1, .regions = { ERASEINFO(0x01000,128), } }, { .mfr_id = (u16)STM_MANUFACT, .dev_id = STM_ID_M29W040B, .name = "ST Micro M29W040B", .uaddr = { [0] = MTD_UADDR_0x0555_0x02AA /* x8 */ }, .DevSize = SIZE_512KiB, .CmdSet = P_ID_AMD_STD, .NumEraseRegions= 1, .regions = { ERASEINFO(0x10000,8), } }, #endif #ifdef CONFIG_SYS_FLASH_LEGACY_512Kx16 { .mfr_id = (u16)AMD_MANUFACT, .dev_id = AM29LV400BB, .name = "AMD AM29LV400BB", .uaddr = { [1] = MTD_UADDR_0x0555_0x02AA /* x16 */ }, .DevSize = SIZE_512KiB, .CmdSet = CFI_CMDSET_AMD_LEGACY, .NumEraseRegions= 4, .regions = { ERASEINFO(0x04000,1), ERASEINFO(0x02000,2), ERASEINFO(0x08000,1), ERASEINFO(0x10000,7), } }, { .mfr_id = (u16)AMD_MANUFACT, .dev_id = AM29LV800BB, .name = "AMD AM29LV800BB", .uaddr = { [1] = MTD_UADDR_0x0555_0x02AA /* x16 */ }, .DevSize = SIZE_1MiB, .CmdSet = CFI_CMDSET_AMD_LEGACY, .NumEraseRegions= 4, .regions = { ERASEINFO(0x04000, 1), ERASEINFO(0x02000, 2), ERASEINFO(0x08000, 1), ERASEINFO(0x10000, 15), } }, #endif }; static inline void fill_info(flash_info_t *info, const struct amd_flash_info *jedec_entry, ulong base) { int i,j; int sect_cnt; int size_ratio; int total_size; enum uaddr uaddr_idx; size_ratio = info->portwidth / info->chipwidth; debug("Found JEDEC Flash: %s\n", jedec_entry->name); info->vendor = jedec_entry->CmdSet; /* Todo: do we need device-specific timeouts? */ info->erase_blk_tout = 30000; info->buffer_write_tout = 1000; info->write_tout = 100; info->name = jedec_entry->name; /* copy unlock addresses from device table to CFI info struct. This is just here because the addresses are in the table anyway - if the flash is not detected due to wrong unlock addresses, flash_detect_legacy would have to try all of them before we even get here. */ switch(info->chipwidth) { case FLASH_CFI_8BIT: uaddr_idx = jedec_entry->uaddr[0]; break; case FLASH_CFI_16BIT: uaddr_idx = jedec_entry->uaddr[1]; break; case FLASH_CFI_32BIT: uaddr_idx = jedec_entry->uaddr[2]; break; default: uaddr_idx = MTD_UADDR_NOT_SUPPORTED; break; } debug("unlock address index %d\n", uaddr_idx); info->addr_unlock1 = unlock_addrs[uaddr_idx].addr1; info->addr_unlock2 = unlock_addrs[uaddr_idx].addr2; debug("unlock addresses are 0x%x/0x%x\n", info->addr_unlock1, info->addr_unlock2); sect_cnt = 0; total_size = 0; for (i = 0; i < jedec_entry->NumEraseRegions; i++) { ulong erase_region_size = jedec_entry->regions[i] >> 8; ulong erase_region_count = (jedec_entry->regions[i] & 0xff) + 1; total_size += erase_region_size * erase_region_count; debug ("erase_region_count = %d erase_region_size = %d\n", erase_region_count, erase_region_size); for (j = 0; j < erase_region_count; j++) { if (sect_cnt >= CONFIG_SYS_MAX_FLASH_SECT) { printf("ERROR: too many flash sectors\n"); break; } info->start[sect_cnt] = base; base += (erase_region_size * size_ratio); sect_cnt++; } } info->sector_count = sect_cnt; info->size = total_size * size_ratio; } /*----------------------------------------------------------------------- * match jedec ids against table. If a match is found, fill flash_info entry */ int jedec_flash_match(flash_info_t *info, ulong base) { int ret = 0; int i; ulong mask = 0xFFFF; if (info->chipwidth == 1) mask = 0xFF; for (i = 0; i < ARRAY_SIZE(jedec_table); i++) { if ((jedec_table[i].mfr_id & mask) == (info->manufacturer_id & mask) && (jedec_table[i].dev_id & mask) == (info->device_id & mask)) { fill_info(info, &jedec_table[i], base); ret = 1; break; } } return ret; }