/* * (C) Copyright 2001 * 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> #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 /*---------------------------------------------------------------------*/ #undef DEBUG_FLASH #ifdef DEBUG_FLASH #define DEBUGF(fmt,args...) printf(fmt ,##args) #else #define DEBUGF(fmt,args...) #endif /*---------------------------------------------------------------------*/ flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */ /*----------------------------------------------------------------------- * 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); /*----------------------------------------------------------------------- * * The PCU E uses an address map where flash banks are aligned top * down, so that the "first" flash bank ends at top of memory, and * the monitor entry point is at address (0xFFF00100). The second * flash bank is mapped immediately below bank 0. * * This is NOT in conformance to the "official" memory map! * */ #define PCU_MONITOR_BASE ( (flash_info[0].start[0] + flash_info[0].size - 1) \ - (0xFFFFFFFF - CFG_MONITOR_BASE) ) /*----------------------------------------------------------------------- */ unsigned long flash_init (void) { volatile immap_t *immap = (immap_t *)CFG_IMMR; volatile memctl8xx_t *memctl = &immap->im_memctl; unsigned long base, size_b0, size_b1; int i; /* 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 */ /* * Warning: * * Since the PCU E memory map assigns flash banks top down, * we swap the numbering later if both banks are equipped, * so they look like a contiguous area of memory. */ DEBUGF("\n## Get flash bank 1 size @ 0x%08x\n",FLASH_BASE0_PRELIM); 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 - Size = 0x%08lx = %ld MB\n", size_b0, size_b0<<20); } DEBUGF("## Get flash bank 2 size @ 0x%08x\n",FLASH_BASE6_PRELIM); size_b1 = flash_get_size((vu_long *)FLASH_BASE6_PRELIM, &flash_info[1]); DEBUGF("## Prelim. Flash bank sizes: %08lx + 0x%08lx\n", size_b0, size_b1); if (size_b1 > size_b0) { printf ("## ERROR: " "Bank 1 (0x%08lx = %ld MB) > Bank 0 (0x%08lx = %ld MB)\n", size_b1, size_b1<<20, size_b0, size_b0<<20 ); flash_info[0].flash_id = FLASH_UNKNOWN; flash_info[1].flash_id = FLASH_UNKNOWN; flash_info[0].sector_count = -1; flash_info[1].sector_count = -1; flash_info[0].size = 0; flash_info[1].size = 0; return (0); } DEBUGF ("## Before remap: " "BR0: 0x%08x OR0: 0x%08x " "BR6: 0x%08x OR6: 0x%08x\n", memctl->memc_br0, memctl->memc_or0, memctl->memc_br6, memctl->memc_or6); /* Remap FLASH according to real size */ base = 0 - size_b0; memctl->memc_or0 = CFG_OR_TIMING_FLASH | (-size_b0 & 0xFFFF8000); memctl->memc_br0 = (base & BR_BA_MSK) | BR_PS_16 | BR_MS_GPCM | BR_V; DEBUGF("## BR0: 0x%08x OR0: 0x%08x\n", memctl->memc_br0, memctl->memc_or0); /* Re-do sizing to get full correct info */ size_b0 = flash_get_size((vu_long *)base, &flash_info[0]); base = 0 - size_b0; flash_info[0].size = size_b0; flash_get_offsets (base, &flash_info[0]); /* monitor protection ON by default */ flash_protect(FLAG_PROTECT_SET, PCU_MONITOR_BASE, PCU_MONITOR_BASE+monitor_flash_len-1, &flash_info[0]); #ifdef CFG_ENV_IS_IN_FLASH /* ENV protection ON by default */ flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR, CFG_ENV_ADDR+CFG_ENV_SECT_SIZE-1, &flash_info[0]); #endif if (size_b1) { flash_info_t tmp_info; memctl->memc_or6 = CFG_OR_TIMING_FLASH | (-size_b1 & 0xFFFF8000); memctl->memc_br6 = ((base - size_b1) & BR_BA_MSK) | BR_PS_16 | BR_MS_GPCM | BR_V; DEBUGF("## New BR6: 0x%08x OR6: 0x%08x\n", memctl->memc_br6, memctl->memc_or6); /* Re-do sizing to get full correct info */ size_b1 = flash_get_size((vu_long *)(base - size_b1), &flash_info[1]); base -= size_b1; flash_get_offsets (base, &flash_info[1]); flash_info[1].size = size_b1; #ifdef CFG_ENV_IS_IN_FLASH /* ENV protection ON by default */ flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR, CFG_ENV_ADDR+CFG_ENV_SECT_SIZE-1, &flash_info[1]); #endif /* * Swap bank numbers so that addresses are in ascending order */ tmp_info = flash_info[0]; flash_info[0] = flash_info[1]; flash_info[1] = tmp_info; } else { memctl->memc_br1 = 0; /* invalidate bank */ flash_info[1].flash_id = FLASH_UNKNOWN; flash_info[1].sector_count = -1; } DEBUGF("## Final Flash bank sizes: %08lx + 0x%08lx\n",size_b0,size_b1); return (size_b0 + size_b1); } /*----------------------------------------------------------------------- */ static void flash_get_offsets (ulong base, flash_info_t *info) { int i; short n; if (info->flash_id == FLASH_UNKNOWN) { return; } if ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_AMD) { return; } switch (info->flash_id & FLASH_TYPEMASK) { case FLASH_AMDL322T: case FLASH_AMDL323T: case 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; } return; case FLASH_AMDL322B: case FLASH_AMDL323B: case 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 (base < info->size) { /* 64k regular sectors */ info->start[i] = base; base += 64 << 10; ++i; } return; case FLASH_AMDL640: /* set sector offsets for dual boot block type */ for (i=0; i<8; ++i) { /* 8 x 8k boot sectors */ info->start[i] = base; base += 8 << 10; } n = info->sector_count - 8; while (i < n) { /* 64k regular sectors */ info->start[i] = base; base += 64 << 10; ++i; } while (i < info->sector_count) { /* 8 x 8k boot sectors */ info->start[i] = base; base += 8 << 10; ++i; } return; default: return; } /* NOTREACHED */ } /*----------------------------------------------------------------------- */ 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; default: printf ("Unknown Vendor "); break; } switch (info->flash_id & FLASH_TYPEMASK) { case FLASH_AMDL322B: printf ("AM29DL322B (32 Mbit, bottom boot sect)\n"); break; case FLASH_AMDL322T: printf ("AM29DL322T (32 Mbit, top boot sector)\n"); break; case FLASH_AMDL323B: printf ("AM29DL323B (32 Mbit, bottom boot sect)\n"); break; case FLASH_AMDL323T: printf ("AM29DL323T (32 Mbit, top boot sector)\n"); break; case FLASH_AMDL324B: printf ("AM29DL324B (32 Mbit, bottom boot sect)\n"); break; case FLASH_AMDL324T: printf ("AM29DL324T (32 Mbit, top boot sector)\n"); break; case FLASH_AMDL640: printf ("AM29DL640D (64 Mbit, dual boot sector)\n"); break; default: printf ("Unknown Chip Type 0x%lX\n", info->flash_id); 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"); return; } /*----------------------------------------------------------------------- */ /*----------------------------------------------------------------------- */ /* * The following code cannot be run from FLASH! */ static ulong flash_get_size (vu_long *addr, flash_info_t *info) { short i; ushort value; vu_short *saddr = (vu_short *)addr; /* Write auto select command: read Manufacturer ID */ saddr[0x0555] = 0x00AA; saddr[0x02AA] = 0x0055; saddr[0x0555] = 0x0090; value = saddr[0]; DEBUGF("Manuf. ID @ 0x%08lx: 0x%04x\n", (ulong)addr, value); switch (value) { case (AMD_MANUFACT & 0xFFFF): info->flash_id = FLASH_MAN_AMD; break; case (FUJ_MANUFACT & 0xFFFF): info->flash_id = FLASH_MAN_FUJ; break; default: DEBUGF("Unknown Manufacturer ID\n"); info->flash_id = FLASH_UNKNOWN; info->sector_count = 0; info->size = 0; return (0); /* no or unknown flash */ } value = saddr[1]; /* device ID */ DEBUGF("Device ID @ 0x%08lx: 0x%04x\n", (ulong)(&addr[1]), value); switch (value) { case (AMD_ID_DL322T & 0xFFFF): info->flash_id += FLASH_AMDL322T; info->sector_count = 71; info->size = 0x00400000; break; /* => 8 MB */ case (AMD_ID_DL322B & 0xFFFF): info->flash_id += FLASH_AMDL322B; info->sector_count = 71; info->size = 0x00400000; break; /* => 8 MB */ case (AMD_ID_DL323T & 0xFFFF): info->flash_id += FLASH_AMDL323T; info->sector_count = 71; info->size = 0x00400000; break; /* => 8 MB */ case (AMD_ID_DL323B & 0xFFFF): info->flash_id += FLASH_AMDL323B; info->sector_count = 71; info->size = 0x00400000; break; /* => 8 MB */ case (AMD_ID_DL324T & 0xFFFF): info->flash_id += FLASH_AMDL324T; info->sector_count = 71; info->size = 0x00400000; break; /* => 8 MB */ case (AMD_ID_DL324B & 0xFFFF): info->flash_id += FLASH_AMDL324B; info->sector_count = 71; info->size = 0x00400000; break; /* => 8 MB */ case (AMD_ID_DL640 & 0xFFFF): info->flash_id += FLASH_AMDL640; info->sector_count = 142; info->size = 0x00800000; break; default: DEBUGF("Unknown Device ID\n"); info->flash_id = FLASH_UNKNOWN; return (0); /* => no or unknown flash */ } flash_get_offsets ((ulong)addr, info); /* check for protected sectors */ for (i = 0; i < info->sector_count; i++) { #if 0 /* read sector protection at sector address, (A7 .. A0) = 0x02 */ /* D0 = 1 if protected */ saddr = (vu_short *)(info->start[i]); info->protect[i] = saddr[2] & 1; #else info->protect[i] =0; #endif } if (info->sector_count > CFG_MAX_FLASH_SECT) { printf ("** ERROR: sector count %d > max (%d) **\n", info->sector_count, CFG_MAX_FLASH_SECT); info->sector_count = CFG_MAX_FLASH_SECT; } saddr = (vu_short *)info->start[0]; *saddr = 0x00F0; /* restore read mode */ return (info->size); } /*----------------------------------------------------------------------- */ int flash_erase (flash_info_t *info, int s_first, int s_last) { vu_short *addr = (vu_short*)(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 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[0x0555] = 0x00AA; addr[0x02AA] = 0x0055; addr[0x0555] = 0x0080; addr[0x0555] = 0x00AA; addr[0x02AA] = 0x0055; /* Start erase on unprotected sectors */ for (sect = s_first; sect<=s_last; sect++) { if (info->protect[sect] == 0) { /* not protected */ addr = (vu_short*)(info->start[sect]); addr[0] = 0x0030; 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_short*)(info->start[l_sect]); while ((addr[0] & 0x0080) != 0x0080) { 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 = (vu_short *)info->start[0]; addr[0] = 0x00F0; /* reset bank */ printf (" done\n"); return 0; } /*----------------------------------------------------------------------- * Copy memory to flash, returns: * 0 - OK * 1 - write timeout * 2 - Flash not erased */ #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; 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*)(info->start[0]); vu_short *sdest = (vu_short *)dest; ushort sdata = (ushort)data; ushort sval; ulong start, passed; int flag, rc; /* Check if Flash is (sufficiently) erased */ if ((*sdest & sdata) != sdata) { return (2); } /* Disable interrupts which might cause a timeout here */ flag = disable_interrupts(); addr[0x0555] = 0x00AA; addr[0x02AA] = 0x0055; addr[0x0555] = 0x00A0; #ifdef WORKAROUND_FOR_BROKEN_HARDWARE /* work around the timeout bugs */ udelay(20); #endif *sdest = sdata; /* re-enable interrupts if necessary */ if (flag) enable_interrupts(); rc = 0; /* data polling for D7 */ start = get_timer (0); for (passed=0; passed < CFG_FLASH_WRITE_TOUT; passed=get_timer(start)) { sval = *sdest; if ((sval & 0x0080) == (sdata & 0x0080)) break; if ((sval & 0x0020) == 0) /* DQ5: Timeout? */ continue; sval = *sdest; if ((sval & 0x0080) != (sdata & 0x0080)) rc = 1; break; } if (rc) { DEBUGF ("Program cycle failed @ addr 0x%08lX: val %04X data %04X\n", dest, sval, sdata); } if (passed >= CFG_FLASH_WRITE_TOUT) { DEBUGF ("Timeout @ addr 0x%08lX: val %04X data %04X\n", dest, sval, sdata); rc = 1; } /* reset to read mode */ addr = (vu_short *)info->start[0]; addr[0] = 0x00F0; /* reset bank */ return (rc); } /*----------------------------------------------------------------------- */