/* * (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 <mpc8xx.h> 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 #define QUAD_ID(id) ((((ulong)(id) & 0xFF) << 24) | \ (((ulong)(id) & 0xFF) << 16) | \ (((ulong)(id) & 0xFF) << 8) | \ (((ulong)(id) & 0xFF) << 0) \ ) /*----------------------------------------------------------------------- * 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); /*----------------------------------------------------------------------- */ unsigned long flash_init (void) { volatile immap_t *immap = (immap_t *) CFG_IMMR; volatile memctl8xx_t *memctl = &immap->im_memctl; vu_long *bcsr = (vu_long *)BCSR_ADDR; unsigned long pd_size, total_size, bsize, or_am; 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; flash_info[i].sector_count = 0; flash_info[i].start[0] = 0xFFFFFFFF; /* For TFTP */ } switch ((bcsr[2] & BCSR2_FLASH_PD_MASK) >> BCSR2_FLASH_PD_SHIFT) { case 2: case 4: case 6: pd_size = 0x800000; or_am = 0xFF800000; break; case 5: case 7: pd_size = 0x400000; or_am = 0xFFC00000; break; case 8: pd_size = 0x200000; or_am = 0xFFE00000; break; default: pd_size = 0; or_am = 0xFFE00000; printf("## Unsupported flash detected by BCSR: 0x%08X\n", bcsr[2]); } total_size = 0; for (i = 0; i < CFG_MAX_FLASH_BANKS && total_size < pd_size; ++i) { bsize = flash_get_size((vu_long *)(CFG_FLASH_BASE + total_size), &flash_info[i]); if (flash_info[i].flash_id == FLASH_UNKNOWN) { printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n", i, bsize, bsize >> 20); } total_size += bsize; } if (total_size != pd_size) { printf("## Detected flash size %lu conflicts with PD data %lu\n", total_size, pd_size); } /* Remap FLASH according to real size */ memctl->memc_or0 = or_am | CFG_OR_TIMING_FLASH; for (i = 0; i < CFG_MAX_FLASH_BANKS && flash_info[i].size != 0; ++i) { #if CFG_MONITOR_BASE >= CFG_FLASH_BASE /* monitor protection ON by default */ if (CFG_MONITOR_BASE >= flash_info[i].start[0]) flash_protect (FLAG_PROTECT_SET, CFG_MONITOR_BASE, CFG_MONITOR_BASE + monitor_flash_len - 1, &flash_info[i]); #endif #ifdef CFG_ENV_IS_IN_FLASH /* ENV protection ON by default */ if (CFG_ENV_ADDR >= flash_info[i].start[0]) flash_protect (FLAG_PROTECT_SET, CFG_ENV_ADDR, CFG_ENV_ADDR + CFG_ENV_SIZE - 1, &flash_info[i]); #endif } return total_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_BM: printf ("BRIGHT MICRO "); break; default: printf ("Unknown Vendor "); break; } switch (info->flash_id & FLASH_TYPEMASK) { case FLASH_AM040: printf ("29F040 or 29LV040 (4 Mbit, uniform sectors)\n"); break; case FLASH_AM080: printf ("29F080 or 29LV080 (8 Mbit, uniform sectors)\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; 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 can not run from flash! */ static ulong flash_get_size (vu_long * addr, flash_info_t * info) { short i; /* Write auto select command: read Manufacturer ID */ addr[0x0555] = 0xAAAAAAAA; addr[0x02AA] = 0x55555555; addr[0x0555] = 0x90909090; switch (addr[0]) { case QUAD_ID(AMD_MANUFACT): info->flash_id = FLASH_MAN_AMD; break; case QUAD_ID(FUJ_MANUFACT): info->flash_id = FLASH_MAN_FUJ; break; default: info->flash_id = FLASH_UNKNOWN; info->sector_count = 0; info->size = 0; break; } switch (addr[1]) { /* device ID */ case QUAD_ID(AMD_ID_F040B): case QUAD_ID(AMD_ID_LV040B): info->flash_id += FLASH_AM040; info->sector_count = 8; info->size = 0x00200000; break; /* => 2 MB */ case QUAD_ID(AMD_ID_F080B): info->flash_id += FLASH_AM080; info->sector_count = 16; info->size = 0x00400000; break; /* => 4 MB */ #if 0 case AMD_ID_LV400T: info->flash_id += FLASH_AM400T; info->sector_count = 11; info->size = 0x00100000; break; /* => 1 MB */ case AMD_ID_LV400B: info->flash_id += FLASH_AM400B; info->sector_count = 11; info->size = 0x00100000; break; /* => 1 MB */ case AMD_ID_LV800T: info->flash_id += FLASH_AM800T; info->sector_count = 19; info->size = 0x00200000; break; /* => 2 MB */ case AMD_ID_LV800B: info->flash_id += FLASH_AM800B; info->sector_count = 19; info->size = 0x00200000; break; /* => 2 MB */ case AMD_ID_LV160T: info->flash_id += FLASH_AM160T; info->sector_count = 35; info->size = 0x00400000; break; /* => 4 MB */ case AMD_ID_LV160B: info->flash_id += FLASH_AM160B; info->sector_count = 35; info->size = 0x00400000; break; /* => 4 MB */ case AMD_ID_LV320T: info->flash_id += FLASH_AM320T; info->sector_count = 67; info->size = 0x00800000; break; /* => 8 MB */ case AMD_ID_LV320B: info->flash_id += FLASH_AM320B; info->sector_count = 67; info->size = 0x00800000; break; /* => 8 MB */ #endif /* 0 */ default: info->flash_id = FLASH_UNKNOWN; return (0); /* => no or unknown flash */ } #if 0 /* set up sector start address table */ if (info->flash_id & FLASH_BTYPE) { /* set sector offsets for bottom boot block type */ info->start[0] = base + 0x00000000; info->start[1] = base + 0x00008000; info->start[2] = base + 0x0000C000; info->start[3] = base + 0x00010000; for (i = 4; i < info->sector_count; i++) { info->start[i] = base + (i * 0x00020000) - 0x00060000; } } else { /* set sector offsets for top boot block type */ i = info->sector_count - 1; info->start[i--] = base + info->size - 0x00008000; info->start[i--] = base + info->size - 0x0000C000; info->start[i--] = base + info->size - 0x00010000; for (; i >= 0; i--) { info->start[i] = base + i * 0x00020000; } } #else /* set sector offsets for uniform sector type */ for (i = 0; i < info->sector_count; i++) info->start[i] = (ulong)addr + (i * 0x00040000); #endif /* 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 = (volatile unsigned long *) (info->start[i]); info->protect[i] = addr[2] & 1; } if (info->flash_id != FLASH_UNKNOWN) { addr = (volatile unsigned long *) info->start[0]; *addr = 0xF0F0F0F0; /* reset bank */ } return (info->size); } /*----------------------------------------------------------------------- */ int flash_erase (flash_info_t * info, int s_first, int s_last) { vu_long *addr = (vu_long *) (info->start[0]); 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 ERR_INVAL; } if ((info->flash_id == FLASH_UNKNOWN) || (info->flash_id > FLASH_AMD_COMP)) { printf ("Can't erase unknown flash type - aborted\n"); return ERR_UNKNOWN_FLASH_TYPE; } 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[0x0555] = 0xAAAAAAAA; addr[0x02AA] = 0x55555555; addr[0x0555] = 0x80808080; addr[0x0555] = 0xAAAAAAAA; addr[0x02AA] = 0x55555555; /* Start erase on unprotected sectors */ for (sect = s_first; sect <= s_last; sect++) { if (info->protect[sect] == 0) { /* not protected */ addr = (vu_long *) (info->start[sect]); addr[0] = 0x30303030; 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 = (vu_long *) (info->start[l_sect]); while ((addr[0] & 0xFFFFFFFF) != 0xFFFFFFFF) { if ((now = get_timer (start)) > CFG_FLASH_ERASE_TOUT) { printf ("Timeout\n"); return ERR_TIMOUT; } /* show that we're waiting */ if ((now - last) > 1000) { /* every second */ putc ('.'); last = now; } } DONE: /* reset to read mode */ addr = (volatile unsigned long *) info->start[0]; addr[0] = 0xF0F0F0F0; /* 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) { vu_long *addr = (vu_long *) (info->start[0]); ulong start; int flag; /* Check if Flash is (sufficiently) erased */ if ((*((vu_long *) dest) & data) != data) { return ERR_NOT_ERASED; } /* Disable interrupts which might cause a timeout here */ flag = disable_interrupts (); addr[0x0555] = 0xAAAAAAAA; addr[0x02AA] = 0x55555555; addr[0x0555] = 0xA0A0A0A0; *((vu_long *) dest) = data; /* re-enable interrupts if necessary */ if (flag) enable_interrupts (); /* data polling for D7 */ start = get_timer (0); while ((*((vu_long *) dest) & 0x80808080) != (data & 0x80808080)) { if (get_timer (start) > CFG_FLASH_WRITE_TOUT) { return ERR_TIMOUT; } } return (0); }