/******************************************************************** * * Unless otherwise specified, Copyright (C) 2004-2005 Barco Control Rooms * * $Source: /home/services/cvs/firmware/ppc/u-boot-1.1.2/board/barco/flash.c,v $ * $Revision: 1.3 $ * $Author: mleeman $ * $Date: 2005/02/21 12:48:58 $ * * Last ChangeLog Entry * $Log: flash.c,v $ * Revision 1.3 2005/02/21 12:48:58 mleeman * update of copyright years (feedback wd) * * Revision 1.2 2005/02/21 11:04:04 mleeman * remove dead code and Coding style (feedback wd) * * Revision 1.1 2005/02/14 09:23:46 mleeman * - moved 'barcohydra' directory to a more generic barco; since we will be * supporting and adding multiple boards * * Revision 1.2 2005/02/09 12:56:23 mleeman * add generic header to track changes in sources * * *******************************************************************/ /* * (C) Copyright 2000 * 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 */ #include <common.h> #include <mpc824x.h> #include <asm/processor.h> #include <flash.h> #define ROM_CS0_START 0xFF800000 #define ROM_CS1_START 0xFF000000 flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */ #if defined(CFG_ENV_IS_IN_FLASH) # ifndef CFG_ENV_ADDR # define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET) # endif # ifndef CFG_ENV_SIZE # define CFG_ENV_SIZE CFG_ENV_SECT_SIZE # endif # ifndef CFG_ENV_SECT_SIZE # define CFG_ENV_SECT_SIZE CFG_ENV_SIZE # endif #endif /*----------------------------------------------------------------------- * Functions */ static int write_word (flash_info_t *info, ulong dest, ulong data); /*flash command address offsets*/ #define ADDR0 (0xAAA) #define ADDR1 (0x555) #define ADDR3 (0x001) #define FLASH_WORD_SIZE unsigned char /*----------------------------------------------------------------------- */ static unsigned long flash_id(unsigned char mfct, unsigned char chip) __attribute__ ((const)); typedef struct{ FLASH_WORD_SIZE extval; unsigned short intval; } map_entry; static unsigned long flash_id(unsigned char mfct, unsigned char chip) { static const map_entry mfct_map[] = { {(FLASH_WORD_SIZE) AMD_MANUFACT, (unsigned short) ((unsigned long) FLASH_MAN_AMD >> 16)}, {(FLASH_WORD_SIZE) FUJ_MANUFACT, (unsigned short) ((unsigned long) FLASH_MAN_FUJ >> 16)}, {(FLASH_WORD_SIZE) STM_MANUFACT, (unsigned short) ((unsigned long) FLASH_MAN_STM >> 16)}, {(FLASH_WORD_SIZE) MT_MANUFACT, (unsigned short) ((unsigned long) FLASH_MAN_MT >> 16)}, {(FLASH_WORD_SIZE) INTEL_MANUFACT,(unsigned short) ((unsigned long) FLASH_MAN_INTEL >> 16)}, {(FLASH_WORD_SIZE) INTEL_ALT_MANU,(unsigned short) ((unsigned long) FLASH_MAN_INTEL >> 16)} }; static const map_entry chip_map[] = { {AMD_ID_F040B, FLASH_AM040}, {AMD_ID_F033C, FLASH_AM033}, {AMD_ID_F065D, FLASH_AM065}, {ATM_ID_LV040, FLASH_AT040}, {(FLASH_WORD_SIZE) STM_ID_x800AB, FLASH_STM800AB} }; const map_entry *p; unsigned long result = FLASH_UNKNOWN; /* find chip id */ for(p = &chip_map[0]; p < &chip_map[sizeof chip_map / sizeof chip_map[0]]; p++){ if(p->extval == chip){ result = FLASH_VENDMASK | p->intval; break; } } /* find vendor id */ for(p = &mfct_map[0]; p < &mfct_map[sizeof mfct_map / sizeof mfct_map[0]]; p++){ if(p->extval == mfct){ result &= ~FLASH_VENDMASK; result |= (unsigned long) p->intval << 16; break; } } return result; } unsigned long flash_init(void) { unsigned long i; unsigned char j; static const ulong flash_banks[] = CFG_FLASH_BANKS; /* Init: no FLASHes known */ for (i = 0; i < CFG_MAX_FLASH_BANKS; i++){ flash_info_t * const pflinfo = &flash_info[i]; pflinfo->flash_id = FLASH_UNKNOWN; pflinfo->size = 0; pflinfo->sector_count = 0; } /* Enable writes to Hydra/Argus flash */ { register unsigned int temp; CONFIG_READ_WORD(PICR1,temp); temp |= PICR1_FLASH_WR_EN; CONFIG_WRITE_WORD(PICR1,temp); } for(i = 0; i < sizeof flash_banks / sizeof flash_banks[0]; i++){ flash_info_t * const pflinfo = &flash_info[i]; const unsigned long base_address = flash_banks[i]; volatile FLASH_WORD_SIZE * const flash = (FLASH_WORD_SIZE *) base_address; /* write autoselect sequence */ flash[0x5555] = 0xaa; flash[0x2aaa] = 0x55; flash[0x5555] = 0x90; __asm__ __volatile__("sync"); pflinfo->flash_id = flash_id(flash[0x0], flash[0x1]); switch(pflinfo->flash_id & FLASH_TYPEMASK){ case FLASH_AM033: pflinfo->size = 0x00200000; pflinfo->sector_count = 64; for(j = 0; j < 64; j++){ pflinfo->start[j] = base_address + 0x00010000 * j; pflinfo->protect[j] = flash[(j << 16) | 0x2]; } break; case FLASH_AM065: pflinfo->size = 0x00800000; pflinfo->sector_count =128; for(j = 0; j < 128; j++){ pflinfo->start[j] = base_address + 0x00010000 * j; pflinfo->protect[j] = flash[(j << 16) | 0x2]; } break; case FLASH_AT040: pflinfo->size = 0x00080000; pflinfo->sector_count = 2; pflinfo->start[0] = base_address ; pflinfo->start[1] = base_address + 0x00004000; pflinfo->protect[0] = ((flash[0x02] & 0X01)==0) ? 0X02 : 0X01; pflinfo->protect[1] = 0X02; break; case FLASH_AM040: pflinfo->size = 0x00080000; pflinfo->sector_count = 8; for(j = 0; j < 8; j++){ pflinfo->start[j] = base_address + 0x00010000 * j; pflinfo->protect[j] = flash[(j << 16) | 0x2]; } break; case FLASH_STM800AB: pflinfo->size = 0x00100000; pflinfo->sector_count = 19; pflinfo->start[0] = base_address; pflinfo->start[1] = base_address + 0x4000; pflinfo->start[2] = base_address + 0x6000; pflinfo->start[3] = base_address + 0x8000; for(j = 1; j < 16; j++){ pflinfo->start[j+3] = base_address + 0x00010000 * j; } break; } /* Protect monitor and environment sectors */ #if CFG_MONITOR_BASE >= CFG_FLASH_BASE flash_protect(FLAG_PROTECT_SET, CFG_MONITOR_BASE, CFG_MONITOR_BASE + monitor_flash_len - 1, &flash_info[0]); #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 /* reset device to read mode */ flash[0x0000] = 0xf0; __asm__ __volatile__("sync"); } return flash_info[0].size + flash_info[1].size; } /*----------------------------------------------------------------------- */ void flash_print_info(flash_info_t *info) { static const char unk[] = "Unknown"; const char *mfct = unk, *type = unk; unsigned int i; if(info->flash_id != FLASH_UNKNOWN){ switch(info->flash_id & FLASH_VENDMASK){ case FLASH_MAN_ATM: mfct = "Atmel"; break; case FLASH_MAN_AMD: mfct = "AMD"; break; case FLASH_MAN_FUJ: mfct = "FUJITSU"; break; case FLASH_MAN_STM: mfct = "STM"; break; case FLASH_MAN_SST: mfct = "SST"; break; case FLASH_MAN_BM: mfct = "Bright Microelectonics"; break; case FLASH_MAN_INTEL: mfct = "Intel"; break; } switch(info->flash_id & FLASH_TYPEMASK){ case FLASH_AT040: type = "AT49LV040 (512K * 8, uniform sector size)"; break; case FLASH_AM033: type = "AM29F033C (4 Mbit * 8, uniform sector size)"; break; case FLASH_AM040: type = "AM29F040B (512K * 8, uniform sector size)"; break; case FLASH_AM065: type = "AM29F0465D ( 8 MBit * 8, uniform sector size) or part of AM29F652D( 16 MB)"; break; case FLASH_AM400B: type = "AM29LV400B (4 Mbit, bottom boot sect)"; break; case FLASH_AM400T: type = "AM29LV400T (4 Mbit, top boot sector)"; break; case FLASH_AM800B: type = "AM29LV800B (8 Mbit, bottom boot sect)"; break; case FLASH_AM800T: type = "AM29LV800T (8 Mbit, top boot sector)"; break; case FLASH_AM160T: type = "AM29LV160T (16 Mbit, top boot sector)"; break; case FLASH_AM320B: type = "AM29LV320B (32 Mbit, bottom boot sect)"; break; case FLASH_AM320T: type = "AM29LV320T (32 Mbit, top boot sector)"; break; case FLASH_STM800AB: type = "M29W800AB (8 Mbit, bottom boot sect)"; break; case FLASH_SST800A: type = "SST39LF/VF800 (8 Mbit, uniform sector size)"; break; case FLASH_SST160A: type = "SST39LF/VF160 (16 Mbit, uniform sector size)"; break; } } printf( "\n Brand: %s Type: %s\n" " Size: %lu KB in %d Sectors\n", mfct, type, info->size >> 10, info->sector_count ); printf (" Sector Start Addresses:"); for (i = 0; i < info->sector_count; i++){ unsigned long size; unsigned int erased; unsigned long * flash = (unsigned long *) info->start[i]; /* * Check if whole sector is erased */ size = (i != (info->sector_count - 1)) ? (info->start[i + 1] - info->start[i]) >> 2 : (info->start[0] + info->size - info->start[i]) >> 2; for( flash = (unsigned long *) info->start[i], erased = 1; (flash != (unsigned long *) info->start[i] + size) && erased; flash++ ){ erased = *flash == ~0x0UL; } printf( "%s %08lX %s %s", (i % 5) ? "" : "\n ", info->start[i], erased ? "E" : " ", info->protect[i] ? "RO" : " " ); } puts("\n"); return; } int flash_erase(flash_info_t *info, int s_first, int s_last) { volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *)(info->start[0]); int flag, prot, sect, l_sect; ulong start, now, last; unsigned char sh8b; 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_MAN_STM | FLASH_AMD_COMP))) { 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; /* Check the ROM CS */ if ((info->start[0] >= ROM_CS1_START) && (info->start[0] < ROM_CS0_START)){ sh8b = 3; } else{ sh8b = 0; } /* Disable interrupts which might cause a timeout here */ flag = disable_interrupts(); addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00AA00AA; addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE)0x00550055; addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00800080; addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00AA00AA; addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE)0x00550055; /* Start erase on unprotected sectors */ for (sect = s_first; sect<=s_last; sect++) { if (info->protect[sect] == 0) { /* not protected */ addr = (FLASH_WORD_SIZE *)(info->start[0] + ( (info->start[sect] - info->start[0]) << sh8b)); if (info->flash_id & FLASH_MAN_SST){ addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00AA00AA; addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE)0x00550055; addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00800080; addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00AA00AA; addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE)0x00550055; addr[0] = (FLASH_WORD_SIZE)0x00500050; /* block erase */ udelay(30000); /* wait 30 ms */ } else addr[0] = (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 = (FLASH_WORD_SIZE *)(info->start[0] + ( (info->start[l_sect] - info->start[0]) << sh8b)); while ((addr[0] & (FLASH_WORD_SIZE)0x00800080) != (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 */ serial_putc ('.'); last = now; } } DONE: /* reset to read mode */ addr = (FLASH_WORD_SIZE *)info->start[0]; addr[0] = (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 FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *)info->start[0]; volatile FLASH_WORD_SIZE *dest2; volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *)&data; ulong start; int flag; int i; unsigned char sh8b; /* Check the ROM CS */ if ((info->start[0] >= ROM_CS1_START) && (info->start[0] < ROM_CS0_START)){ sh8b = 3; } else{ sh8b = 0; } dest2 = (FLASH_WORD_SIZE *)(((dest - info->start[0]) << sh8b) + info->start[0]); /* Check if Flash is (sufficiently) erased */ if ((*dest2 & (FLASH_WORD_SIZE)data) != (FLASH_WORD_SIZE)data) { return (2); } /* Disable interrupts which might cause a timeout here */ flag = disable_interrupts(); for (i=0; i<4/sizeof(FLASH_WORD_SIZE); i++){ addr2[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00AA00AA; addr2[ADDR1 << sh8b] = (FLASH_WORD_SIZE)0x00550055; addr2[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00A000A0; dest2[i << sh8b] = data2[i]; /* re-enable interrupts if necessary */ if (flag){ enable_interrupts(); } /* data polling for D7 */ start = get_timer (0); while ((dest2[i << sh8b] & (FLASH_WORD_SIZE)0x00800080) != (data2[i] & (FLASH_WORD_SIZE)0x00800080)) { if (get_timer(start) > CFG_FLASH_WRITE_TOUT) { return (1); } } } return (0); } /*----------------------------------------------------------------------- */