/* * (C) Copyright 2002 * Sysgo Real-Time Solutions, GmbH * Marius Groeger * * 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 #define FLASH_BANK_SIZE 0x800000 #define MAIN_SECT_SIZE 0x20000 #define PARAM_SECT_SIZE 0x4000 flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /*----------------------------------------------------------------------- */ ulong flash_init(void) { int i, j; ulong size = 0; for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) { ulong flashbase = 0; flash_info[i].flash_id = (INTEL_MANUFACT & FLASH_VENDMASK) | (INTEL_ID_28F320B3T & FLASH_TYPEMASK); flash_info[i].size = FLASH_BANK_SIZE; flash_info[i].sector_count = CFG_MAX_FLASH_SECT; memset(flash_info[i].protect, 0, CFG_MAX_FLASH_SECT); if (i == 0) flashbase = PHYS_FLASH_1; else if (i == 1) flashbase = PHYS_FLASH_2; else panic("configured too many flash banks!\n"); for (j = 0; j < flash_info[i].sector_count; j++) { if (j <= 7) { flash_info[i].start[j] = flashbase + j * PARAM_SECT_SIZE; } else { flash_info[i].start[j] = flashbase + (j - 7)*MAIN_SECT_SIZE; } } size += flash_info[i].size; } /* Protect monitor and environment sectors */ flash_protect(FLAG_PROTECT_SET, CFG_FLASH_BASE, CFG_FLASH_BASE + monitor_flash_len - 1, &flash_info[0]); flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR, CFG_ENV_ADDR + CFG_ENV_SIZE - 1, &flash_info[0]); return size; } /*----------------------------------------------------------------------- */ void flash_print_info (flash_info_t *info) { int i; switch (info->flash_id & FLASH_VENDMASK) { case (INTEL_MANUFACT & FLASH_VENDMASK): printf("Intel: "); break; default: printf("Unknown Vendor "); break; } switch (info->flash_id & FLASH_TYPEMASK) { case (INTEL_ID_28F320B3T & FLASH_TYPEMASK): printf("28F320F3B (16Mbit)\n"); break; default: printf("Unknown Chip Type\n"); goto Done; 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"); Done: } /*----------------------------------------------------------------------- */ int flash_erase (flash_info_t *info, int s_first, int s_last) { int flag, prot, sect; int rc = ERR_OK; if (info->flash_id == FLASH_UNKNOWN) return ERR_UNKNOWN_FLASH_TYPE; if ((s_first < 0) || (s_first > s_last)) { return ERR_INVAL; } if ((info->flash_id & FLASH_VENDMASK) != (INTEL_MANUFACT & FLASH_VENDMASK)) { return ERR_UNKNOWN_FLASH_VENDOR; } prot = 0; for (sect=s_first; sect<=s_last; ++sect) { if (info->protect[sect]) { prot++; } } if (prot) return ERR_PROTECTED; /* * Disable interrupts which might cause a timeout * here. Remember that our exception vectors are * at address 0 in the flash, and we don't want a * (ticker) exception to happen while the flash * chip is in programming mode. */ flag = disable_interrupts(); /* Start erase on unprotected sectors */ for (sect = s_first; sect<=s_last && !ctrlc(); sect++) { printf("Erasing sector %2d ... ", sect); /* arm simple, non interrupt dependent timer */ reset_timer_masked(); if (info->protect[sect] == 0) { /* not protected */ vu_long *addr = (vu_long *)(info->start[sect]); *addr = 0x00200020; /* erase setup */ *addr = 0x00D000D0; /* erase confirm */ while ((*addr & 0x00800080) != 0x00800080) { if (get_timer_masked() > CFG_FLASH_ERASE_TOUT) { *addr = 0x00B000B0; /* suspend erase */ *addr = 0x00FF00FF; /* reset to read mode */ rc = ERR_TIMOUT; goto outahere; } } *addr = 0x00FF00FF; /* reset to read mode */ } printf("ok.\n"); } if (ctrlc()) printf("User Interrupt!\n"); outahere: /* allow flash to settle - wait 10 ms */ udelay_masked(10000); if (flag) enable_interrupts(); return rc; } /*----------------------------------------------------------------------- * Copy memory to flash */ static int write_word (flash_info_t *info, ulong dest, ulong data) { vu_long *addr = (vu_long *)dest; ulong barf; int rc = ERR_OK; int flag; /* Check if Flash is (sufficiently) erased */ if ((*addr & data) != data) return ERR_NOT_ERASED; /* * Disable interrupts which might cause a timeout * here. Remember that our exception vectors are * at address 0 in the flash, and we don't want a * (ticker) exception to happen while the flash * chip is in programming mode. */ flag = disable_interrupts(); /* clear status register command */ *addr = 0x00500050; /* program set-up command */ *addr = 0x00400040; /* latch address/data */ *addr = data; /* arm simple, non interrupt dependent timer */ reset_timer_masked(); /* read status register command */ *addr = 0x00700070; /* wait while polling the status register */ while((*addr & 0x00800080) != 0x00800080) { if (get_timer_masked() > CFG_FLASH_WRITE_TOUT) { rc = ERR_TIMOUT; /* suspend program command */ *addr = 0x00B000B0; goto outahere; } if( *addr & 0x003A003A) { /* check for error */ barf = *addr; if( barf & 0x003A0000) { barf >>=16; } else { barf &= 0x0000003A; } printf("\nFlash write error %02lx at address %08lx\n", barf, (unsigned long)dest); if(barf & 0x0002) { printf("Block locked, not erased.\n"); rc = ERR_NOT_ERASED; goto outahere; } if(barf & 0x0010) { printf("Programming error.\n"); rc = ERR_PROG_ERROR; goto outahere; } if(barf & 0x0008) { printf("Vpp Low error.\n"); rc = ERR_PROG_ERROR; goto outahere; } rc = ERR_PROG_ERROR; goto outahere; } } outahere: /* read array command */ *addr = 0x00FF00FF; if (flag) enable_interrupts(); return rc; } /*----------------------------------------------------------------------- * Copy memory to flash. */ int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) { ulong cp, wp, data; int l; int i, 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> 8) | (*(uchar *)cp << 24); } for (; i<4 && cnt>0; ++i) { data = (data >> 8) | (*src++ << 24); --cnt; ++cp; } for (; cnt==0 && i<4; ++i, ++cp) { data = (data >> 8) | (*(uchar *)cp << 24); } if ((rc = write_word(info, wp, data)) != 0) { return (rc); } wp += 4; } /* * handle word aligned part */ while (cnt >= 4) { data = *((vu_long*)src); if ((rc = write_word(info, wp, data)) != 0) { return (rc); } src += 4; wp += 4; cnt -= 4; } if (cnt == 0) { return ERR_OK; } /* * handle unaligned tail bytes */ data = 0; for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { data = (data >> 8) | (*src++ << 24); --cnt; } for (; i<4; ++i, ++cp) { data = (data >> 8) | (*(uchar *)cp << 24); } return write_word(info, wp, data); }