/* * (C) Copyright 2003 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * 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 */ /* * Modified 4/5/2001 * Wait for completion of each sector erase command issued * 4/5/2001 * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com */ #include <asm/u-boot.h> #include <asm/processor.h> #include <ppc4xx.h> #include <common.h> flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */ /*----------------------------------------------------------------------- * Functions */ static ulong flash_get_size (vu_long *addr, flash_info_t *info); static int write_word (flash_info_t *info, ulong dest, ulong data); #ifdef MEIGSBOARD_ONBOARD_FLASH /* onboard = 2MB */ # ifdef CONFIG_EXBITGEN # define FLASH_WORD_SIZE unsigned long # endif #else /* Meigsboard socket flash = 512KB */ # ifdef CONFIG_EXBITGEN # define FLASH_WORD_SIZE unsigned char # endif #endif #ifdef CONFIG_EXBITGEN #define ADDR0 0x5555 #define ADDR1 0x2aaa #define FLASH_WORD_SIZE unsigned char #endif /*----------------------------------------------------------------------- */ unsigned long flash_init (void) { unsigned long bank_size; unsigned long tot_size; unsigned long bank_addr; int i; /* Init: no FLASHes known */ for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) { flash_info[i].flash_id = FLASH_UNKNOWN; flash_info[i].size = 0; } tot_size = 0; /* Detect Boot Flash */ bank_addr = CFG_FLASH0_BASE; bank_size = flash_get_size((vu_long *)bank_addr, &flash_info[0]); if (bank_size > 0) { (void)flash_protect(FLAG_PROTECT_CLEAR, bank_addr, bank_addr + bank_size - 1, &flash_info[0]); } if (flash_info[0].flash_id == FLASH_UNKNOWN) { printf ("## Unknown FLASH on Boot Flash Bank\n"); } flash_info[0].size = bank_size; tot_size += bank_size; /* Detect Application Flash */ bank_addr = CFG_FLASH1_BASE; for (i = 1; i < CFG_MAX_FLASH_BANKS; ++i) { bank_size = flash_get_size((vu_long *)bank_addr, &flash_info[i]); if (flash_info[i].flash_id == FLASH_UNKNOWN) { break; } if (bank_size > 0) { (void)flash_protect(FLAG_PROTECT_CLEAR, bank_addr, bank_addr + bank_size - 1, &flash_info[i]); } flash_info[i].size = bank_size; tot_size += bank_size; bank_addr += bank_size; } if (flash_info[1].flash_id == FLASH_UNKNOWN) { printf ("## Unknown FLASH on Application Flash Bank\n"); } /* Protect monitor and environment sectors */ #if CFG_MONITOR_BASE >= CFG_FLASH0_BASE flash_protect(FLAG_PROTECT_SET, CFG_MONITOR_BASE, CFG_MONITOR_BASE + monitor_flash_len - 1, &flash_info[0]); #if 0xfffffffc >= CFG_FLASH0_BASE #if 0xfffffffc <= CFG_FLASH0_BASE + CFG_FLASH0_SIZE - 1 flash_protect(FLAG_PROTECT_SET, 0xfffffffc, 0xffffffff, &flash_info[0]); #endif #endif #endif #if (CFG_ENV_IS_IN_FLASH == 1) && defined(CFG_ENV_ADDR) flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR, CFG_ENV_ADDR + CFG_ENV_SIZE - 1, &flash_info[0]); #endif return tot_size; } /*----------------------------------------------------------------------- */ void flash_print_info (flash_info_t *info) { int i; if (info->flash_id == FLASH_UNKNOWN) { printf ("missing or unknown FLASH type\n"); return; } switch (info->flash_id & FLASH_VENDMASK) { case FLASH_MAN_AMD: printf ("AMD "); break; case FLASH_MAN_FUJ: printf ("FUJITSU "); break; case FLASH_MAN_SST: printf ("SST "); break; default: printf ("Unknown Vendor "); break; } switch (info->flash_id & FLASH_TYPEMASK) { case FLASH_AM040: printf ("AM29F040 (512 Kbit, uniform sector size)\n"); break; case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n"); break; case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n"); break; case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n"); break; case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n"); break; case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n"); break; case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n"); break; case FLASH_AM320B: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n"); break; case FLASH_AM320T: printf ("AM29LV320T (32 Mbit, top boot sector)\n"); break; case FLASH_AMDLV033C: printf ("AM29LV033C (32 Mbit, uniform sector size)\n"); break; case FLASH_AMDLV065D: printf ("AM29LV065D (64 Mbit, uniform sector size)\n"); break; case FLASH_SST800A: printf ("SST39LF/VF800 (8 Mbit, uniform sector size)\n"); break; case FLASH_SST160A: printf ("SST39LF/VF160 (16 Mbit, uniform sector size)\n"); break; case FLASH_SST040: printf ("SST39LF/VF040 (4 Mbit, uniform sector size)\n"); break; default: printf ("Unknown Chip Type\n"); break; } printf (" Size: %ld KB in %d Sectors\n", info->size >> 10, info->sector_count); printf (" Sector Start Addresses:"); for (i=0; i<info->sector_count; ++i) { if ((i % 5) == 0) printf ("\n "); printf (" %08lX%s", info->start[i], info->protect[i] ? " (RO)" : " " ); } printf ("\n"); } /*----------------------------------------------------------------------- */ /*----------------------------------------------------------------------- */ /* * The following code cannot be run from FLASH! */ static ulong flash_get_size (vu_long *addr, flash_info_t *info) { short i; FLASH_WORD_SIZE value; ulong base = (ulong)addr; volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *)addr; /* Write auto select command: read Manufacturer ID */ addr2[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA; addr2[ADDR1] = (FLASH_WORD_SIZE)0x00550055; addr2[ADDR0] = (FLASH_WORD_SIZE)0x00900090; value = addr2[0]; switch (value) { case (FLASH_WORD_SIZE)AMD_MANUFACT: info->flash_id = FLASH_MAN_AMD; break; case (FLASH_WORD_SIZE)FUJ_MANUFACT: info->flash_id = FLASH_MAN_FUJ; break; case (FLASH_WORD_SIZE)SST_MANUFACT: info->flash_id = FLASH_MAN_SST; break; default: info->flash_id = FLASH_UNKNOWN; info->sector_count = 0; info->size = 0; return (0); /* no or unknown flash */ } value = addr2[1]; /* device ID */ switch (value) { case (FLASH_WORD_SIZE)AMD_ID_F040B: info->flash_id += FLASH_AM040; info->sector_count = 8; info->size = 0x0080000; /* => 512 ko */ break; case (FLASH_WORD_SIZE)AMD_ID_LV400T: info->flash_id += FLASH_AM400T; info->sector_count = 11; info->size = 0x00080000; break; /* => 0.5 MB */ case (FLASH_WORD_SIZE)AMD_ID_LV400B: info->flash_id += FLASH_AM400B; info->sector_count = 11; info->size = 0x00080000; break; /* => 0.5 MB */ case (FLASH_WORD_SIZE)AMD_ID_LV800T: info->flash_id += FLASH_AM800T; info->sector_count = 19; info->size = 0x00100000; break; /* => 1 MB */ case (FLASH_WORD_SIZE)AMD_ID_LV800B: info->flash_id += FLASH_AM800B; info->sector_count = 19; info->size = 0x00100000; break; /* => 1 MB */ case (FLASH_WORD_SIZE)AMD_ID_LV160T: info->flash_id += FLASH_AM160T; info->sector_count = 35; info->size = 0x00200000; break; /* => 2 MB */ case (FLASH_WORD_SIZE)AMD_ID_LV160B: info->flash_id += FLASH_AM160B; info->sector_count = 35; info->size = 0x00200000; break; /* => 2 MB */ case (FLASH_WORD_SIZE)AMD_ID_LV033C: info->flash_id += FLASH_AMDLV033C; info->sector_count = 64; info->size = 0x00400000; break; /* => 4 MB */ case (FLASH_WORD_SIZE)AMD_ID_LV065D: info->flash_id += FLASH_AMDLV065D; info->sector_count = 128; info->size = 0x00800000; break; /* => 8 MB */ case (FLASH_WORD_SIZE)AMD_ID_LV320T: info->flash_id += FLASH_AM320T; info->sector_count = 67; info->size = 0x00400000; break; /* => 4 MB */ case (FLASH_WORD_SIZE)AMD_ID_LV320B: info->flash_id += FLASH_AM320B; info->sector_count = 67; info->size = 0x00400000; break; /* => 4 MB */ case (FLASH_WORD_SIZE)SST_ID_xF800A: info->flash_id += FLASH_SST800A; info->sector_count = 16; info->size = 0x00100000; break; /* => 1 MB */ case (FLASH_WORD_SIZE)SST_ID_xF160A: info->flash_id += FLASH_SST160A; info->sector_count = 32; info->size = 0x00200000; break; /* => 2 MB */ case (FLASH_WORD_SIZE)SST_ID_xF040: info->flash_id += FLASH_SST040; info->sector_count = 128; info->size = 0x00080000; break; /* => 512KB */ default: info->flash_id = FLASH_UNKNOWN; return (0); /* => no or unknown flash */ } /* set up sector start address table */ if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) || (info->flash_id == FLASH_AM040) || (info->flash_id == FLASH_AMDLV033C) || (info->flash_id == FLASH_AMDLV065D)) { ulong sectsize = info->size / info->sector_count; for (i = 0; i < info->sector_count; i++) info->start[i] = base + (i * sectsize); } else { if (info->flash_id & FLASH_BTYPE) { /* set sector offsets for bottom boot block type */ info->start[0] = base + 0x00000000; info->start[1] = base + 0x00004000; info->start[2] = base + 0x00006000; info->start[3] = base + 0x00008000; for (i = 4; i < info->sector_count; i++) { info->start[i] = base + (i * 0x00010000) - 0x00030000; } } else { /* set sector offsets for top boot block type */ i = info->sector_count - 1; info->start[i--] = base + info->size - 0x00004000; info->start[i--] = base + info->size - 0x00006000; info->start[i--] = base + info->size - 0x00008000; for (; i >= 0; i--) { info->start[i] = base + i * 0x00010000; } } } /* check for protected sectors */ for (i = 0; i < info->sector_count; i++) { /* read sector protection at sector address, (A7 .. A0) = 0x02 */ /* D0 = 1 if protected */ addr2 = (volatile FLASH_WORD_SIZE *)(info->start[i]); if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) info->protect[i] = 0; else info->protect[i] = addr2[2] & 1; } /* switch to the read mode */ if (info->flash_id != FLASH_UNKNOWN) { addr2 = (FLASH_WORD_SIZE *)info->start[0]; *addr2 = (FLASH_WORD_SIZE)0x00F000F0; /* reset bank */ } return (info->size); } /*----------------------------------------------------------------------- */ int flash_erase (flash_info_t *info, int s_first, int s_last) { volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *)(info->start[0]); volatile FLASH_WORD_SIZE *addr2; int flag, prot, sect; ulong start, now, last; if ((s_first < 0) || (s_first > s_last)) { if (info->flash_id == FLASH_UNKNOWN) { printf ("- missing\n"); } else { printf ("- no sectors to erase\n"); } return 1; } if (info->flash_id == FLASH_UNKNOWN) { printf ("Can't erase unknown flash type - aborted\n"); return 1; } prot = 0; for (sect=s_first; sect<=s_last; ++sect) { if (info->protect[sect]) { prot++; } } if (prot) { printf ("- Warning: %d protected sectors will not be erased!\n", prot); } else { printf ("\n"); } start = get_timer (0); last = start; /* Start erase on unprotected sectors */ for (sect = s_first; sect <= s_last; sect++) { if (info->protect[sect] == 0) { /* not protected */ addr2 = (FLASH_WORD_SIZE *)(info->start[sect]); /* Disable interrupts which might cause a timeout here */ flag = disable_interrupts(); addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA; addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055; addr[ADDR0] = (FLASH_WORD_SIZE)0x00800080; addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA; addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055; addr2[0] = (FLASH_WORD_SIZE)0x00300030; /* re-enable interrupts if necessary */ if (flag) enable_interrupts(); /* wait at least 80us - let's wait 1 ms */ udelay (1000); while ((addr2[0] & 0x00800080) != (FLASH_WORD_SIZE) 0x00800080) { if ((now=get_timer(start)) > CFG_FLASH_ERASE_TOUT) { printf ("Timeout\n"); addr[0] = (FLASH_WORD_SIZE)0x00F000F0; return 1; } /* show that we're waiting */ if ((now - last) > 1000) { /* every second */ putc ('.'); last = now; } } addr[0] = (FLASH_WORD_SIZE)0x00F000F0; } } printf (" done\n"); return 0; } /*----------------------------------------------------------------------- * Copy memory to flash, returns: * 0 - OK * 1 - write timeout * 2 - Flash not erased */ int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) { ulong cp, wp, data; int i, l, rc; wp = (addr & ~3); /* get lower word aligned address */ /* * handle unaligned start bytes */ if ((l = addr - wp) != 0) { data = 0; for (i=0, cp=wp; i<l; ++i, ++cp) { data = (data << 8) | (*(uchar *)cp); } for (; i<4 && cnt>0; ++i) { data = (data << 8) | *src++; --cnt; ++cp; } for (; cnt==0 && i<4; ++i, ++cp) { data = (data << 8) | (*(uchar *)cp); } if ((rc = write_word(info, wp, data)) != 0) { return (rc); } wp += 4; } /* * handle word aligned part */ while (cnt >= 4) { data = 0; for (i=0; i<4; ++i) { data = (data << 8) | *src++; } if ((rc = write_word(info, wp, data)) != 0) { return (rc); } wp += 4; cnt -= 4; } if (cnt == 0) { return (0); } /* * handle unaligned tail bytes */ data = 0; for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { data = (data << 8) | *src++; --cnt; } for (; i<4; ++i, ++cp) { data = (data << 8) | (*(uchar *)cp); } return (write_word(info, wp, data)); } /*----------------------------------------------------------------------- * Write a word to Flash, returns: * 0 - OK * 1 - write timeout * 2 - Flash not erased */ static int write_word (flash_info_t *info, ulong dest, ulong data) { volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *)(info->start[0]); volatile FLASH_WORD_SIZE *dest2 = (FLASH_WORD_SIZE *)dest; volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *)&data; ulong start; int flag; int i; /* Check if Flash is (sufficiently) erased */ if ((*((volatile ulong *)dest) & data) != data) { printf("dest = %08lx, *dest = %08lx, data = %08lx\n", dest, *(volatile ulong *)dest, data); return 2; } for (i=0; i < 4/sizeof(FLASH_WORD_SIZE); i++) { /* Disable interrupts which might cause a timeout here */ flag = disable_interrupts(); addr2[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA; addr2[ADDR1] = (FLASH_WORD_SIZE)0x00550055; addr2[ADDR0] = (FLASH_WORD_SIZE)0x00A000A0; dest2[i] = data2[i]; /* re-enable interrupts if necessary */ if (flag) enable_interrupts(); /* data polling for D7 */ start = get_timer (0); while ((dest2[i] & 0x00800080) != (data2[i] & 0x00800080)) { if (get_timer(start) > CFG_FLASH_WRITE_TOUT) { addr2[0] = (FLASH_WORD_SIZE)0x00F000F0; return (1); } } } addr2[0] = (FLASH_WORD_SIZE)0x00F000F0; return (0); } /*----------------------------------------------------------------------- */