/* * (C) Copyright 2000 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * (C) Copyright 2001-2003 * * Changes for MATRIX Vision mvBLUE devices * MATRIX Vision GmbH / hg,as info@matrix-vision.de * * 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 <mpc824x.h> #if 0 #define mvdebug(p) printf ##p #else #define mvdebug(p) #endif flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; #define FLASH_BUS_WIDTH 8 #if (FLASH_BUS_WIDTH==32) #define FLASH_DATA_MASK 0xffffffff #define FLASH_SHIFT 1 #define FDT vu_long #elif (FLASH_BUS_WIDTH==16) #define FLASH_DATA_MASK 0xff #define FLASH_SHIFT 0 #define FDT vu_short #elif (FLASH_BUS_WIDTH==8) #define FLASH_DATA_MASK 0xff #define FLASH_SHIFT 0 #define FDT vu_char #else #error FLASH_BUS_WIDTH undefined #endif /*----------------------------------------------------------------------- * Functions */ static ulong flash_get_size (vu_long *address, flash_info_t *info); static int write_word (flash_info_t *info, ulong dest, ulong data); static void flash_get_offsets (ulong base, flash_info_t *info); /*----------------------------------------------------------------------- */ unsigned long flash_init (void) { unsigned long size_b0; int i; for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) { flash_info[i].flash_id = FLASH_UNKNOWN; } size_b0 = flash_get_size((vu_long *)0xffc00000, &flash_info[0]); if (flash_info[0].flash_id == FLASH_UNKNOWN) { printf ("## Unknown FLASH : Size = 0x%08lx = %ld MB\n", size_b0, size_b0<<20); } flash_get_offsets (0xffc00000, &flash_info[0]); flash_info[0].size = size_b0; /* monitor protection OFF by default */ flash_protect ( FLAG_PROTECT_CLEAR, 0xffc00000, 0x2000, flash_info ); return size_b0; } /*----------------------------------------------------------------------- */ static void flash_get_offsets (ulong base, flash_info_t *info) { int i; /* set up sector start address table */ if (info->flash_id & FLASH_BTYPE) { /* bottom boot sector types - these are the useful ones! */ /* set sector offsets for bottom boot block type */ if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) { /* AMDLV320B has 8 x 8k bottom boot sectors */ for (i = 0; i < 8; i++) /* +8k */ info->start[i] = base + (i * (0x00002000 << FLASH_SHIFT)); for (; i < info->sector_count; i++) /* +64k */ info->start[i] = base + (i * (0x00010000 << FLASH_SHIFT)) - (0x00070000 << FLASH_SHIFT); } else { /* other types have 4 bottom boot sectors (16,8,8,32) */ i = 0; info->start[i++] = base + 0x00000000; /* - */ info->start[i++] = base + (0x00004000 << FLASH_SHIFT); /* +16k */ info->start[i++] = base + (0x00006000 << FLASH_SHIFT); /* +8k */ info->start[i++] = base + (0x00008000 << FLASH_SHIFT); /* +8k */ info->start[i++] = base + (0x00010000 << FLASH_SHIFT); /* +32k */ for (; i < info->sector_count; i++) /* +64k */ info->start[i] = base + (i * (0x00010000 << FLASH_SHIFT)) - (0x00030000 << FLASH_SHIFT); } } else { /* top boot sector types - not so useful */ /* set sector offsets for top boot block type */ if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) { /* AMDLV320T has 8 x 8k top boot sectors */ for (i = 0; i < info->sector_count - 8; i++) /* +64k */ info->start[i] = base + (i * (0x00010000 << FLASH_SHIFT)); for (; i < info->sector_count; i++) /* +8k */ info->start[i] = base + (i * (0x00002000 << FLASH_SHIFT)); } else { /* other types have 4 top boot sectors (32,8,8,16) */ for (i = 0; i < info->sector_count - 4; i++) /* +64k */ info->start[i] = base + (i * (0x00010000 << FLASH_SHIFT)); info->start[i++] = base + info->size - (0x00010000 << FLASH_SHIFT); /* -32k */ info->start[i++] = base + info->size - (0x00008000 << FLASH_SHIFT); /* -8k */ info->start[i++] = base + info->size - (0x00006000 << FLASH_SHIFT); /* -8k */ info->start[i] = base + info->size - (0x00004000 << FLASH_SHIFT); /* -16k */ } } } /*----------------------------------------------------------------------- */ 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_STM: printf ("ST "); break; default: printf ("Unknown Vendor "); break; } switch (info->flash_id & FLASH_TYPEMASK) { 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_STMW320DB: printf ("M29W320B (32 Mbit, bottom boot sect)\n"); break; case FLASH_STMW320DT: printf ("M29W320T (32 Mbit, top boot sector)\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) { 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! */ #define AMD_ID_LV160T_MVS (AMD_ID_LV160T & FLASH_DATA_MASK) #define AMD_ID_LV160B_MVS (AMD_ID_LV160B & FLASH_DATA_MASK) #define AMD_ID_LV320T_MVS (AMD_ID_LV320T & FLASH_DATA_MASK) #define AMD_ID_LV320B_MVS (AMD_ID_LV320B & FLASH_DATA_MASK) #define STM_ID_W320DT_MVS (STM_ID_29W320DT & FLASH_DATA_MASK) #define STM_ID_W320DB_MVS (STM_ID_29W320DB & FLASH_DATA_MASK) #define AMD_MANUFACT_MVS (AMD_MANUFACT & FLASH_DATA_MASK) #define FUJ_MANUFACT_MVS (FUJ_MANUFACT & FLASH_DATA_MASK) #define STM_MANUFACT_MVS (STM_MANUFACT & FLASH_DATA_MASK) #if (FLASH_BUS_WIDTH >= 16) #define AUTOSELECT_ADDR1 0x0555 #define AUTOSELECT_ADDR2 0x02AA #define AUTOSELECT_ADDR3 AUTOSELECT_ADDR1 #else #define AUTOSELECT_ADDR1 0x0AAA #define AUTOSELECT_ADDR2 0x0555 #define AUTOSELECT_ADDR3 AUTOSELECT_ADDR1 #endif #define AUTOSELECT_DATA1 (0x00AA00AA & FLASH_DATA_MASK) #define AUTOSELECT_DATA2 (0x00550055 & FLASH_DATA_MASK) #define AUTOSELECT_DATA3 (0x00900090 & FLASH_DATA_MASK) #define RESET_BANK_DATA (0x00F000F0 & FLASH_DATA_MASK) static ulong flash_get_size (vu_long *address, flash_info_t *info) { short i; FDT value; FDT *addr = (FDT *)address; ulong base = (ulong)address; addr[AUTOSELECT_ADDR1] = AUTOSELECT_DATA1; addr[AUTOSELECT_ADDR2] = AUTOSELECT_DATA2; addr[AUTOSELECT_ADDR3] = AUTOSELECT_DATA3; __asm__ __volatile__("sync"); udelay(180); value = addr[0]; /* manufacturer ID */ switch (value) { case AMD_MANUFACT_MVS: info->flash_id = FLASH_MAN_AMD; break; case FUJ_MANUFACT_MVS: info->flash_id = FLASH_MAN_FUJ; break; case STM_MANUFACT_MVS: info->flash_id = FLASH_MAN_STM; break; default: info->flash_id = FLASH_UNKNOWN; info->sector_count = 0; info->size = 0; return (0); /* no or unknown flash */ } #if (FLASH_BUS_WIDTH >= 16) value = addr[1]; /* device ID */ #else value = addr[2]; /* device ID */ #endif switch (value) { case AMD_ID_LV160T_MVS: info->flash_id += FLASH_AM160T; info->sector_count = 37; info->size = (0x00200000 << FLASH_SHIFT); break; /* => 2 or 4 MB */ case AMD_ID_LV160B_MVS: info->flash_id += FLASH_AM160B; info->sector_count = 37; info->size = (0x00200000 << FLASH_SHIFT); break; /* => 2 or 4 MB */ case AMD_ID_LV320T_MVS: info->flash_id += FLASH_AM320T; info->sector_count = 71; info->size = (0x00400000 << FLASH_SHIFT); break; /* => 4 or 8 MB */ case AMD_ID_LV320B_MVS: info->flash_id += FLASH_AM320B; info->sector_count = 71; info->size = (0x00400000 << FLASH_SHIFT); break; /* => 4 or 8MB */ case STM_ID_W320DT_MVS: info->flash_id += FLASH_STMW320DT; info->sector_count = 67; info->size = (0x00400000 << FLASH_SHIFT); break; /* => 4 or 8 MB */ case STM_ID_W320DB_MVS: info->flash_id += FLASH_STMW320DB; info->sector_count = 67; info->size = (0x00400000 << FLASH_SHIFT); break; /* => 4 or 8MB */ default: info->flash_id = FLASH_UNKNOWN; return (0); /* => no or unknown flash */ } /* set up sector start address table */ flash_get_offsets (base, info); /* 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 */ addr = (FDT *)(info->start[i]); info->protect[i] = addr[2] & 1; } /* * Prevent writes to uninitialized FLASH. */ if (info->flash_id != FLASH_UNKNOWN) { addr = (FDT *)info->start[0]; *addr = RESET_BANK_DATA; /* reset bank */ } return (info->size); } /*----------------------------------------------------------------------- */ #if (FLASH_BUS_WIDTH >= 16) #define ERASE_ADDR1 0x0555 #define ERASE_ADDR2 0x02AA #else #define ERASE_ADDR1 0x0AAA #define ERASE_ADDR2 0x0555 #endif #define ERASE_ADDR3 ERASE_ADDR1 #define ERASE_ADDR4 ERASE_ADDR1 #define ERASE_ADDR5 ERASE_ADDR2 #define ERASE_DATA1 (0x00AA00AA & FLASH_DATA_MASK) #define ERASE_DATA2 (0x00550055 & FLASH_DATA_MASK) #define ERASE_DATA3 (0x00800080 & FLASH_DATA_MASK) #define ERASE_DATA4 ERASE_DATA1 #define ERASE_DATA5 ERASE_DATA2 #define ERASE_SECTOR_DATA (0x00300030 & FLASH_DATA_MASK) #define ERASE_CHIP_DATA (0x00100010 & FLASH_DATA_MASK) #define ERASE_CONFIRM_DATA (0x00800080 & FLASH_DATA_MASK) int flash_erase (flash_info_t *info, int s_first, int s_last) { FDT *addr = (FDT *)(info->start[0]); int prot, sect, l_sect, flag; ulong start, now, last; __asm__ __volatile__ ("sync"); addr[0] = 0xf0; udelay(1000); printf("\nflash_erase: first = %d @ 0x%08lx\n", s_first, info->start[s_first] ); printf(" last = %d @ 0x%08lx\n", s_last , info->start[s_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) || (info->flash_id > FLASH_AMD_COMP)) { printf ("Can't erase unknown flash type %08lx - aborted\n", info->flash_id); 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(); addr[ERASE_ADDR1] = ERASE_DATA1; addr[ERASE_ADDR2] = ERASE_DATA2; addr[ERASE_ADDR3] = ERASE_DATA3; addr[ERASE_ADDR4] = ERASE_DATA4; addr[ERASE_ADDR5] = ERASE_DATA5; for (sect = s_first; sect <= s_last; sect++) { if (info->protect[sect] == 0) { addr = (FDT *)(info->start[sect]); addr[0] = ERASE_SECTOR_DATA; l_sect = sect; } } if (flag) enable_interrupts(); /* * We wait for the last triggered sector */ if (l_sect < 0) goto DONE; start = get_timer (0); last = start; addr = (FDT *)(info->start[l_sect]); while ((addr[0] & ERASE_CONFIRM_DATA) != ERASE_CONFIRM_DATA) { 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: 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) { #define BUFF_INC 4 ulong cp, wp, data; int i, l, rc; mvdebug (("+write_buff %p ==> 0x%08lx, count = 0x%08lx\n", src, addr, cnt)); wp = (addr & ~3); /* get lower word aligned address */ /* * handle unaligned start bytes */ if ((l = addr - wp) != 0) { mvdebug ((" handle unaligned start bytes (cnt = 0x%08lx)\n", cnt)); data = 0; for (i=0, cp=wp; i<l; ++i, ++cp) { data = (data << 8) | (*(uchar *)cp); } for (; i<BUFF_INC && cnt>0; ++i) { data = (data << 8) | *src++; --cnt; ++cp; } for (; cnt==0 && i<BUFF_INC; ++i, ++cp) { data = (data << 8) | (*(uchar *)cp); } if ((rc = write_word(info, wp, data)) != 0) { return (rc); } wp += BUFF_INC; } /* * handle (half)word aligned part */ mvdebug ((" handle word aligned part (cnt = 0x%08lx)\n", cnt)); while (cnt >= BUFF_INC) { data = 0; for (i=0; i<BUFF_INC; ++i) { data = (data << 8) | *src++; } if ((rc = write_word(info, wp, data)) != 0) { return (rc); } wp += BUFF_INC; cnt -= BUFF_INC; } if (cnt == 0) { return (0); } /* * handle unaligned tail bytes */ mvdebug ((" handle unaligned tail bytes (cnt = 0x%08lx)\n", cnt)); data = 0; for (i=0, cp=wp; i<BUFF_INC && cnt>0; ++i, ++cp) { data = (data << 8) | *src++; --cnt; } for (; i<BUFF_INC; ++i, ++cp) { data = (data << 8) | (*(uchar *)cp); } return (write_word(info, wp, data)); } #if (FLASH_BUS_WIDTH >= 16) #define WRITE_ADDR1 0x0555 #define WRITE_ADDR2 0x02AA #else #define WRITE_ADDR1 0x0AAA #define WRITE_ADDR2 0x0555 #define WRITE_ADDR3 WRITE_ADDR1 #endif #define WRITE_DATA1 (0x00AA00AA & FLASH_DATA_MASK) #define WRITE_DATA2 (0x00550055 & FLASH_DATA_MASK) #define WRITE_DATA3 (0x00A000A0 & FLASH_DATA_MASK) #define WRITE_CONFIRM_DATA ERASE_CONFIRM_DATA /*----------------------------------------------------------------------- * Write a byte to Flash, returns: * 0 - OK * 1 - write timeout * 2 - Flash not erased */ static int write_char (flash_info_t *info, ulong dest, uchar data) { vu_char *addr = (vu_char *)(info->start[0]); ulong start; int flag; /* Check if Flash is (sufficiently) erased */ if ((*((vu_char *)dest) & data) != data) { printf(" *** ERROR: Flash not erased !\n"); return (2); } flag = disable_interrupts(); addr[WRITE_ADDR1] = WRITE_DATA1; addr[WRITE_ADDR2] = WRITE_DATA2; addr[WRITE_ADDR3] = WRITE_DATA3; *((vu_char *)dest) = data; if (flag) enable_interrupts(); /* data polling for D7 */ start = get_timer (0); addr = (vu_char *)dest; while (( (*addr) & WRITE_CONFIRM_DATA) != (data & WRITE_CONFIRM_DATA)) { if (get_timer(start) > CFG_FLASH_WRITE_TOUT) { printf(" *** ERROR: Flash write timeout !"); return (1); } } mvdebug (("-write_byte\n")); return (0); } /*----------------------------------------------------------------------- * 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) { int i, result = 0; mvdebug (("+write_word : 0x%08lx @ 0x%08lx\n", data, dest)); for ( i=0; (i < 4) && (result == 0); i++, dest+=1 ) result = write_char (info, dest, (data >> (8*(3-i))) & 0xff ); mvdebug (("-write_word\n")); return result; } /*---------------------------------------------------------------- */