/* * (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[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */ #if defined(CONFIG_ENV_IS_IN_FLASH) # ifndef CONFIG_ENV_ADDR # define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET) # endif # ifndef CONFIG_ENV_SIZE # define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE # endif # ifndef CONFIG_ENV_SECT_SIZE # define CONFIG_ENV_SECT_SIZE CONFIG_ENV_SIZE # endif #endif /*----------------------------------------------------------------------- * Functions */ static ulong flash_get_size (vu_long *addr, flash_info_t *info); static int write_data (flash_info_t *info, ulong dest, ulong data); static void flash_get_offsets (ulong base, flash_info_t *info); /*----------------------------------------------------------------------- */ unsigned long flash_init (void) { volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; volatile memctl8xx_t *memctl = &immap->im_memctl; unsigned long size_b0; int i; /* Init: no FLASHes known */ for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) { flash_info[i].flash_id = FLASH_UNKNOWN; } /* Static FLASH Bank configuration here - FIXME XXX */ size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]); if (flash_info[0].flash_id == FLASH_UNKNOWN) { printf ("## Unknown FLASH on Bank 0: " "ID 0x%lx, Size = 0x%08lx = %ld MB\n", flash_info[0].flash_id, size_b0, size_b0<<20); } /* Remap FLASH according to real size */ memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH | (-size_b0 & 0xFFFF8000); memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) | \ BR_MS_GPCM | BR_PS_16 | BR_V; /* Re-do sizing to get full correct info */ size_b0 = flash_get_size((vu_long *)CONFIG_SYS_FLASH_BASE, &flash_info[0]); flash_get_offsets (CONFIG_SYS_FLASH_BASE, &flash_info[0]); flash_info[0].size = size_b0; #if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE /* monitor protection ON by default */ flash_protect(FLAG_PROTECT_SET, CONFIG_SYS_MONITOR_BASE, CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1, &flash_info[0]); #endif #ifdef CONFIG_ENV_IS_IN_FLASH /* ENV protection ON by default */ flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR, CONFIG_ENV_ADDR+CONFIG_ENV_SECT_SIZE-1, &flash_info[0]); #endif return (size_b0); } /*----------------------------------------------------------------------- */ static void flash_get_offsets (ulong base, flash_info_t *info) { int i; if (info->flash_id == FLASH_UNKNOWN) { return; } switch (info->flash_id & FLASH_VENDMASK) { case FLASH_MAN_MT: 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-3) * 0x00020000); } } 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 * 0x00020000; } } return; case FLASH_MAN_SST: for (i = 0; i < info->sector_count; i++) { info->start[i] = base + (i * 0x00002000); } return; case FLASH_MAN_AMD: case FLASH_MAN_FUJ: /* 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; } } return; default: printf ("Don't know sector ofsets for flash type 0x%lx\n", info->flash_id); return; } } /*----------------------------------------------------------------------- */ 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; case FLASH_MAN_STM: printf ("STM "); break; case FLASH_MAN_MT: printf ("MT "); break; case FLASH_MAN_INTEL: printf ("Intel "); 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_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_SST200A: printf ("39xF200A (2M = 128K x 16)\n"); break; case FLASH_SST400A: printf ("39xF400A (4M = 256K x 16)\n"); break; case FLASH_SST800A: printf ("39xF800A (8M = 512K x 16)\n"); break; case FLASH_STM800AB: printf ("M29W800AB (8M = 512K x 16)\n"); break; case FLASH_28F008S5: printf ("28F008S5 (1M = 64K x 16)\n"); break; case FLASH_28F400_T: printf ("28F400B3 (4Mbit, top boot sector)\n"); break; case FLASH_28F400_B: printf ("28F400B3 (4Mbit, bottom boot sector)\n"); break; default: printf ("Unknown Chip Type\n"); break; } if (info->size >= (1 << 20)) { i = 20; } else { i = 10; } printf (" Size: %ld %cB in %d Sectors\n", info->size >> i, (i == 20) ? 'M' : 'k', 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"); return; } /*----------------------------------------------------------------------- */ /*----------------------------------------------------------------------- */ /* * The following code cannot be run from FLASH! */ static ulong flash_get_size (vu_long *addr, flash_info_t *info) { ushort value; vu_short *saddr = (vu_short *)addr; /* Read Manufacturer ID */ saddr[0] = 0x0090; value = saddr[0]; switch (value) { case (AMD_MANUFACT & 0xFFFF): info->flash_id = FLASH_MAN_AMD; break; case (FUJ_MANUFACT & 0xFFFF): info->flash_id = FLASH_MAN_FUJ; break; case (SST_MANUFACT & 0xFFFF): info->flash_id = FLASH_MAN_SST; break; case (STM_MANUFACT & 0xFFFF): info->flash_id = FLASH_MAN_STM; break; case (MT_MANUFACT & 0xFFFF): info->flash_id = FLASH_MAN_MT; break; default: info->flash_id = FLASH_UNKNOWN; info->sector_count = 0; info->size = 0; saddr[0] = 0x00FF; /* restore read mode */ return (0); /* no or unknown flash */ } value = saddr[1]; /* device ID */ switch (value) { case (AMD_ID_LV400T & 0xFFFF): info->flash_id += FLASH_AM400T; info->sector_count = 11; info->size = 0x00100000; break; /* => 1 MB */ case (AMD_ID_LV400B & 0xFFFF): info->flash_id += FLASH_AM400B; info->sector_count = 11; info->size = 0x00100000; break; /* => 1 MB */ case (AMD_ID_LV800T & 0xFFFF): info->flash_id += FLASH_AM800T; info->sector_count = 19; info->size = 0x00200000; break; /* => 2 MB */ case (AMD_ID_LV800B & 0xFFFF): info->flash_id += FLASH_AM800B; info->sector_count = 19; info->size = 0x00200000; break; /* => 2 MB */ case (AMD_ID_LV160T & 0xFFFF): info->flash_id += FLASH_AM160T; info->sector_count = 35; info->size = 0x00400000; break; /* => 4 MB */ case (AMD_ID_LV160B & 0xFFFF): info->flash_id += FLASH_AM160B; info->sector_count = 35; info->size = 0x00400000; break; /* => 4 MB */ #if 0 /* enable when device IDs are available */ case (AMD_ID_LV320T & 0xFFFF): info->flash_id += FLASH_AM320T; info->sector_count = 67; info->size = 0x00800000; break; /* => 8 MB */ case (AMD_ID_LV320B & 0xFFFF): info->flash_id += FLASH_AM320B; info->sector_count = 67; info->size = 0x00800000; break; /* => 8 MB */ #endif case (SST_ID_xF200A & 0xFFFF): info->flash_id += FLASH_SST200A; info->sector_count = 64; /* 39xF200A ID ( 2M = 128K x 16 ) */ info->size = 0x00080000; break; case (SST_ID_xF400A & 0xFFFF): info->flash_id += FLASH_SST400A; info->sector_count = 128; /* 39xF400A ID ( 4M = 256K x 16 ) */ info->size = 0x00100000; break; case (SST_ID_xF800A & 0xFFFF): info->flash_id += FLASH_SST800A; info->sector_count = 256; /* 39xF800A ID ( 8M = 512K x 16 ) */ info->size = 0x00200000; break; /* => 2 MB */ case (STM_ID_x800AB & 0xFFFF): info->flash_id += FLASH_STM800AB; info->sector_count = 19; info->size = 0x00200000; break; /* => 2 MB */ case (MT_ID_28F400_T & 0xFFFF): info->flash_id += FLASH_28F400_T; info->sector_count = 7; info->size = 0x00080000; break; /* => 512 kB */ case (MT_ID_28F400_B & 0xFFFF): info->flash_id += FLASH_28F400_B; info->sector_count = 7; info->size = 0x00080000; break; /* => 512 kB */ default: info->flash_id = FLASH_UNKNOWN; saddr[0] = 0x00FF; /* restore read mode */ return (0); /* => no or unknown flash */ } if (info->sector_count > CONFIG_SYS_MAX_FLASH_SECT) { printf ("** ERROR: sector count %d > max (%d) **\n", info->sector_count, CONFIG_SYS_MAX_FLASH_SECT); info->sector_count = CONFIG_SYS_MAX_FLASH_SECT; } saddr[0] = 0x00FF; /* restore read mode */ return (info->size); } /*----------------------------------------------------------------------- */ int flash_erase (flash_info_t *info, int s_first, int s_last) { 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_VENDMASK) != FLASH_MAN_MT) { printf ("Can erase only MT flash types - 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 */ vu_short *addr = (vu_short *)(info->start[sect]); unsigned short status; /* Disable interrupts which might cause a timeout here */ flag = disable_interrupts(); *addr = 0x0050; /* clear status register */ *addr = 0x0020; /* erase setup */ *addr = 0x00D0; /* erase confirm */ /* re-enable interrupts if necessary */ if (flag) enable_interrupts(); /* wait at least 80us - let's wait 1 ms */ udelay (1000); while (((status = *addr) & 0x0080) != 0x0080) { if ((now=get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { printf ("Timeout\n"); *addr = 0x00FF; /* reset to read mode */ return 1; } /* show that we're waiting */ if ((now - last) > 1000) { /* every second */ putc ('.'); last = now; } } *addr = 0x00FF; /* reset to read mode */ } } printf (" done\n"); return 0; } /*----------------------------------------------------------------------- * Copy memory to flash, returns: * 0 - OK * 1 - write timeout * 2 - Flash not erased * 4 - Flash not identified */ #define FLASH_WIDTH 2 /* flash bus width in bytes */ int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) { ulong cp, wp, data; int i, l, rc; if (info->flash_id == FLASH_UNKNOWN) { return 4; } wp = (addr & ~(FLASH_WIDTH-1)); /* get lower FLASH_WIDTH 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<FLASH_WIDTH && cnt>0; ++i) { data = (data << 8) | *src++; --cnt; ++cp; } for (; cnt==0 && i<FLASH_WIDTH; ++i, ++cp) { data = (data << 8) | (*(uchar *)cp); } if ((rc = write_data(info, wp, data)) != 0) { return (rc); } wp += FLASH_WIDTH; } /* * handle FLASH_WIDTH aligned part */ while (cnt >= FLASH_WIDTH) { data = 0; for (i=0; i<FLASH_WIDTH; ++i) { data = (data << 8) | *src++; } if ((rc = write_data(info, wp, data)) != 0) { return (rc); } wp += FLASH_WIDTH; cnt -= FLASH_WIDTH; } if (cnt == 0) { return (0); } /* * handle unaligned tail bytes */ data = 0; for (i=0, cp=wp; i<FLASH_WIDTH && cnt>0; ++i, ++cp) { data = (data << 8) | *src++; --cnt; } for (; i<FLASH_WIDTH; ++i, ++cp) { data = (data << 8) | (*(uchar *)cp); } return (write_data(info, wp, data)); } /*----------------------------------------------------------------------- * Write a word to Flash, returns: * 0 - OK * 1 - write timeout * 2 - Flash not erased */ static int write_data (flash_info_t *info, ulong dest, ulong data) { vu_short *addr = (vu_short *)dest; ushort sdata = (ushort)data; ushort status; ulong start; int flag; /* Check if Flash is (sufficiently) erased */ if ((*addr & sdata) != sdata) { return (2); } /* Disable interrupts which might cause a timeout here */ flag = disable_interrupts(); *addr = 0x0040; /* write setup */ *addr = sdata; /* re-enable interrupts if necessary */ if (flag) enable_interrupts(); start = get_timer (0); while (((status = *addr) & 0x0080) != 0x0080) { if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { *addr = 0x00FF; /* restore read mode */ return (1); } } *addr = 0x00FF; /* restore read mode */ return (0); } /*----------------------------------------------------------------------- */