/* * (C) Copyright 2000-2004 * 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> #if defined(CONFIG_NIOS) #include <nios.h> #else #include <asm/io.h> #endif #define SECTSZ (64 * 1024) flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /*----------------------------------------------------------------------*/ unsigned long flash_init (void) { int i; unsigned long addr; flash_info_t *fli = &flash_info[0]; fli->size = CFG_FLASH_SIZE; fli->sector_count = CFG_MAX_FLASH_SECT; fli->flash_id = FLASH_MAN_AMD + FLASH_AMDLV065D; addr = CFG_FLASH_BASE; for (i = 0; i < fli->sector_count; ++i) { fli->start[i] = addr; addr += SECTSZ; fli->protect[i] = 1; } return (CFG_FLASH_SIZE); } /*--------------------------------------------------------------------*/ void flash_print_info (flash_info_t * info) { int i, k; int erased; unsigned long *addr; printf (" Size: %ld KB in %d Sectors\n", info->size >> 10, info->sector_count); printf (" Sector Start Addresses:"); for (i = 0; i < info->sector_count; ++i) { /* Check if whole sector is erased */ erased = 1; addr = (unsigned long *) info->start[i]; for (k = 0; k < SECTSZ/sizeof(unsigned long); k++) { if ( readl(addr++) != (unsigned long)-1) { erased = 0; break; } } /* Print the info */ if ((i % 5) == 0) printf ("\n "); printf (" %08lX%s%s", info->start[i], erased ? " E" : " ", info->protect[i] ? "RO " : " "); } printf ("\n"); } /*-------------------------------------------------------------------*/ int flash_erase (flash_info_t * info, int s_first, int s_last) { unsigned char *addr = (unsigned char *) info->start[0]; unsigned char *addr2; int prot, sect; ulong start; /* Some sanity checking */ if ((s_first < 0) || (s_first > s_last)) { printf ("- no sectors to erase\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"); } /* It's ok to erase multiple sectors provided we don't delay more * than 50 usec between cmds ... at which point the erase time-out * occurs. So don't go and put printf() calls in the loop ... it * won't be very helpful ;-) */ for (sect = s_first; sect <= s_last; sect++) { if (info->protect[sect] == 0) { /* not protected */ addr2 = (unsigned char *) info->start[sect]; writeb (addr, 0xaa); writeb (addr, 0x55); writeb (addr, 0x80); writeb (addr, 0xaa); writeb (addr, 0x55); writeb (addr2, 0x30); /* Now just wait for 0xff & provide some user * feedback while we wait. */ start = get_timer (0); while ( readb (addr2) != 0xff) { udelay (1000 * 1000); putc ('.'); if (get_timer (start) > CFG_FLASH_ERASE_TOUT) { printf ("timeout\n"); return 1; } } } } printf ("\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) { vu_char *cmd = (vu_char *) info->start[0]; vu_char *dst = (vu_char *) addr; unsigned char b; ulong start; while (cnt) { /* Check for sufficient erase */ b = *src; if ((readb (dst) & b) != b) { printf ("%02x : %02x\n", readb (dst), b); return (2); } writeb (cmd, 0xaa); writeb (cmd, 0x55); writeb (cmd, 0xa0); writeb (dst, b); /* Verify write */ start = get_timer (0); while (readb (dst) != b) { if (get_timer (start) > CFG_FLASH_WRITE_TOUT) { return 1; } } dst++; src++; cnt--; } return (0); }