/* * (C) Copyright 2006 * Stefan Roese, DENX Software Engineering, sr@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 */ #include <common.h> #include <asm/processor.h> #ifndef CFG_FLASH_READ0 #define CFG_FLASH_READ0 0x0000 /* 0 is standard */ #define CFG_FLASH_READ1 0x0001 /* 1 is standard */ #define CFG_FLASH_READ2 0x0002 /* 2 is standard */ #endif flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */ /* * Functions */ static int write_word(flash_info_t *info, ulong dest, ulong data); static ulong flash_get_size(vu_long *addr, flash_info_t *info); unsigned long flash_init(void) { unsigned long size_b0, size_b1; int i; unsigned long base_b0, base_b1; /* Init: no FLASHes known */ for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) { flash_info[i].flash_id = FLASH_UNKNOWN; } /* Static FLASH Bank configuration here - FIXME XXX */ base_b0 = FLASH_BASE0_PRELIM; size_b0 = flash_get_size ((vu_long *) base_b0, &flash_info[0]); if (flash_info[0].flash_id == FLASH_UNKNOWN) { printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", size_b0, size_b0 << 20); } base_b1 = FLASH_BASE1_PRELIM; size_b1 = flash_get_size ((vu_long *) base_b1, &flash_info[1]); return (size_b0 + size_b1); } void flash_print_info(flash_info_t *info) { int i; int k; int size; int erased; volatile unsigned long *flash; 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; case FLASH_MAN_EXCEL: printf ("Excel Semiconductor "); break; default: printf ("Unknown Vendor "); break; } switch (info->flash_id & FLASH_TYPEMASK) { 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_AM040: printf ("AM29LV040B (4 Mbit, uniform sector size)\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_AM320T: printf ("AM29LV320T (32 M, top sector)\n"); break; case FLASH_AM320B: printf ("AM29LV320B (32 M, bottom sector)\n"); break; case FLASH_AMDL322T: printf ("AM29DL322T (32 M, top sector)\n"); break; case FLASH_AMDL322B: printf ("AM29DL322B (32 M, bottom sector)\n"); break; case FLASH_AMDL323T: printf ("AM29DL323T (32 M, top sector)\n"); break; case FLASH_AMDL323B: printf ("AM29DL323B (32 M, bottom sector)\n"); break; case FLASH_SST020: printf ("SST39LF/VF020 (2 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 MB in %d Sectors\n", info->size >> 20, info->sector_count); printf (" Sector Start Addresses:"); for (i=0; i<info->sector_count; ++i) { #ifdef CFG_FLASH_EMPTY_INFO /* * Check if whole sector is erased */ if (i != (info->sector_count-1)) size = info->start[i+1] - info->start[i]; else size = info->start[0] + info->size - info->start[i]; erased = 1; flash = (volatile unsigned long *)info->start[i]; size = size >> 2; /* divide by 4 for longword access */ for (k=0; k<size; k++) { if (*flash++ != 0xffffffff) { erased = 0; break; } } if ((i % 5) == 0) printf ("\n "); /* print empty and read-only info */ printf (" %08lX%s%s", info->start[i], erased ? " E" : " ", info->protect[i] ? "RO " : " "); #else if ((i % 5) == 0) printf ("\n "); printf (" %08lX%s", info->start[i], info->protect[i] ? " (RO)" : " "); #endif } printf ("\n"); return; } /* * The following code cannot be run from FLASH! */ static ulong flash_get_size(vu_long *addr, flash_info_t *info) { short i; short n; volatile CFG_FLASH_WORD_SIZE value; ulong base = (ulong)addr; volatile CFG_FLASH_WORD_SIZE *addr2 = (volatile CFG_FLASH_WORD_SIZE *)addr; /* Write auto select command: read Manufacturer ID */ addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00AA00AA; addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE)0x00550055; addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00900090; value = addr2[CFG_FLASH_READ0]; switch (value) { case (CFG_FLASH_WORD_SIZE)AMD_MANUFACT: info->flash_id = FLASH_MAN_AMD; break; case (CFG_FLASH_WORD_SIZE)FUJ_MANUFACT: info->flash_id = FLASH_MAN_FUJ; break; case (CFG_FLASH_WORD_SIZE)SST_MANUFACT: info->flash_id = FLASH_MAN_SST; break; case (CFG_FLASH_WORD_SIZE)EXCEL_MANUFACT: info->flash_id = FLASH_MAN_EXCEL; break; default: info->flash_id = FLASH_UNKNOWN; info->sector_count = 0; info->size = 0; return (0); /* no or unknown flash */ } value = addr2[CFG_FLASH_READ1]; /* device ID */ switch (value) { case (CFG_FLASH_WORD_SIZE)AMD_ID_LV400T: info->flash_id += FLASH_AM400T; info->sector_count = 11; info->size = 0x00080000; break; /* => 0.5 MB */ case (CFG_FLASH_WORD_SIZE)AMD_ID_LV400B: info->flash_id += FLASH_AM400B; info->sector_count = 11; info->size = 0x00080000; break; /* => 0.5 MB */ case (CFG_FLASH_WORD_SIZE)AMD_ID_LV040B: info->flash_id += FLASH_AM040; info->sector_count = 8; info->size = 0x0080000; /* => 0.5 MB */ break; case (CFG_FLASH_WORD_SIZE)AMD_ID_LV800T: info->flash_id += FLASH_AM800T; info->sector_count = 19; info->size = 0x00100000; break; /* => 1 MB */ case (CFG_FLASH_WORD_SIZE)AMD_ID_LV800B: info->flash_id += FLASH_AM800B; info->sector_count = 19; info->size = 0x00100000; break; /* => 1 MB */ case (CFG_FLASH_WORD_SIZE)AMD_ID_LV160T: info->flash_id += FLASH_AM160T; info->sector_count = 35; info->size = 0x00200000; break; /* => 2 MB */ case (CFG_FLASH_WORD_SIZE)AMD_ID_LV160B: info->flash_id += FLASH_AM160B; info->sector_count = 35; info->size = 0x00200000; break; /* => 2 MB */ case (CFG_FLASH_WORD_SIZE)AMD_ID_LV320T: info->flash_id += FLASH_AM320T; info->sector_count = 71; info->size = 0x00400000; break; /* => 4 MB */ case (CFG_FLASH_WORD_SIZE)AMD_ID_LV320B: info->flash_id += FLASH_AM320B; info->sector_count = 71; info->size = 0x00400000; break; /* => 4 MB */ case (CFG_FLASH_WORD_SIZE)AMD_ID_DL322T: info->flash_id += FLASH_AMDL322T; info->sector_count = 71; info->size = 0x00400000; break; /* => 4 MB */ case (CFG_FLASH_WORD_SIZE)AMD_ID_DL322B: info->flash_id += FLASH_AMDL322B; info->sector_count = 71; info->size = 0x00400000; break; /* => 4 MB */ case (CFG_FLASH_WORD_SIZE)AMD_ID_DL323T: info->flash_id += FLASH_AMDL323T; info->sector_count = 71; info->size = 0x00400000; break; /* => 4 MB */ case (CFG_FLASH_WORD_SIZE)AMD_ID_DL323B: info->flash_id += FLASH_AMDL323B; info->sector_count = 71; info->size = 0x00400000; break; /* => 4 MB */ case (CFG_FLASH_WORD_SIZE)SST_ID_xF020: info->flash_id += FLASH_SST020; info->sector_count = 64; info->size = 0x00040000; break; /* => 256 kB */ case (CFG_FLASH_WORD_SIZE)SST_ID_xF040: info->flash_id += FLASH_SST040; info->sector_count = 128; info->size = 0x00080000; break; /* => 512 kB */ 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_TYPEMASK) == FLASH_AM640U)) { for (i = 0; i < info->sector_count; i++) info->start[i] = base + (i * 0x00001000); } else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) { for (i = 0; i < info->sector_count; i++) info->start[i] = base + (i * 0x00010000); } else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL322B) || ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL323B) || ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) || ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL324B)) { /* set sector offsets for bottom boot block type */ for (i=0; i<8; ++i) { /* 8 x 8k boot sectors */ info->start[i] = base; base += 8 << 10; } while (i < info->sector_count) { /* 64k regular sectors */ info->start[i] = base; base += 64 << 10; ++i; } } else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL322T) || ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL323T) || ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) || ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL324T)) { /* set sector offsets for top boot block type */ base += info->size; i = info->sector_count; for (n=0; n<8; ++n) { /* 8 x 8k boot sectors */ base -= 8 << 10; --i; info->start[i] = base; } while (i > 0) { /* 64k regular sectors */ base -= 64 << 10; --i; info->start[i] = base; } } 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 CFG_FLASH_WORD_SIZE *)(info->start[i]); if ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_AMD) info->protect[i] = 0; else info->protect[i] = addr2[CFG_FLASH_READ2] & 1; } /* * Prevent writes to uninitialized FLASH. */ if (info->flash_id != FLASH_UNKNOWN) { addr2 = (CFG_FLASH_WORD_SIZE *)info->start[0]; *addr2 = (CFG_FLASH_WORD_SIZE)0x00F000F0; /* reset bank */ } return (info->size); } int flash_erase(flash_info_t *info, int s_first, int s_last) { volatile CFG_FLASH_WORD_SIZE *addr = (CFG_FLASH_WORD_SIZE *)(info->start[0]); volatile CFG_FLASH_WORD_SIZE *addr2; int flag, prot, sect, l_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"); l_sect = -1; /* Disable interrupts which might cause a timeout here */ flag = disable_interrupts(); /* Start erase on unprotected sectors */ for (sect = s_first; sect<=s_last; sect++) { if (info->protect[sect] == 0) { /* not protected */ addr2 = (CFG_FLASH_WORD_SIZE *)(info->start[sect]); if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) { addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00AA00AA; addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE)0x00550055; addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00800080; addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00AA00AA; addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE)0x00550055; addr2[0] = (CFG_FLASH_WORD_SIZE)0x00300030; /* sector erase */ /* re-enable interrupts if necessary */ if (flag) { enable_interrupts(); flag = 0; } /* data polling for D7 */ start = get_timer (0); while ((addr2[0] & (CFG_FLASH_WORD_SIZE)0x00800080) != (CFG_FLASH_WORD_SIZE)0x00800080) { if (get_timer(start) > CFG_FLASH_WRITE_TOUT) return (1); } } else { if (sect == s_first) { addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00AA00AA; addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE)0x00550055; addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00800080; addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00AA00AA; addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE)0x00550055; } addr2[0] = (CFG_FLASH_WORD_SIZE)0x00300030; /* sector erase */ } l_sect = sect; } } /* re-enable interrupts if necessary */ if (flag) enable_interrupts(); /* wait at least 80us - let's wait 1 ms */ udelay (1000); /* * We wait for the last triggered sector */ if (l_sect < 0) goto DONE; start = get_timer (0); last = start; addr = (CFG_FLASH_WORD_SIZE *)(info->start[l_sect]); while ((addr[0] & (CFG_FLASH_WORD_SIZE)0x00800080) != (CFG_FLASH_WORD_SIZE)0x00800080) { if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) { printf ("Timeout\n"); return 1; } /* show that we're waiting */ if ((now - last) > 1000) { /* every second */ putc ('.'); last = now; } } DONE: /* reset to read mode */ addr = (CFG_FLASH_WORD_SIZE *)info->start[0]; addr[0] = (CFG_FLASH_WORD_SIZE)0x00F000F0; /* reset bank */ 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 CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *)(info->start[0]); volatile CFG_FLASH_WORD_SIZE *dest2 = (CFG_FLASH_WORD_SIZE *)dest; volatile CFG_FLASH_WORD_SIZE *data2 = (CFG_FLASH_WORD_SIZE *)&data; ulong start; int flag; int i; /* Check if Flash is (sufficiently) erased */ if ((*((vu_long *)dest) & data) != data) return (2); /* Disable interrupts which might cause a timeout here */ flag = disable_interrupts(); for (i=0; i<4/sizeof(CFG_FLASH_WORD_SIZE); i++) { addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE)0x00AA00AA; addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE)0x00550055; addr2[CFG_FLASH_ADDR0] = (CFG_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] & (CFG_FLASH_WORD_SIZE)0x00800080) != (data2[i] & (CFG_FLASH_WORD_SIZE)0x00800080)) { if (get_timer(start) > CFG_FLASH_WRITE_TOUT) return (1); } } return (0); }