diff options
Diffstat (limited to 'board/ssv/common/flash.c')
| -rw-r--r-- | board/ssv/common/flash.c | 207 |
1 files changed, 0 insertions, 207 deletions
diff --git a/board/ssv/common/flash.c b/board/ssv/common/flash.c deleted file mode 100644 index 70bf9d6..0000000 --- a/board/ssv/common/flash.c +++ /dev/null @@ -1,207 +0,0 @@ -/* - * (C) Copyright 2000-2004 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * (C) Copyright 2004, Li-Pro.Net <www.li-pro.net> - * Stephan Linz <linz@li-pro.net> - * - * 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 <watchdog.h> -#include <nios.h> - -flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; - -/*--------------------------------------------------------------------*/ -void flash_print_info (flash_info_t * info) -{ - int i, k; - unsigned long size; - int erased; - volatile unsigned char *flash; - - 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 */ - if (i != (info->sector_count - 1)) - size = info->start[i + 1] - info->start[i]; - else - size = info->start[0] + info->size - info->start[i]; - erased = 1; - flash = (volatile unsigned char *) info->start[i]; - for (k = 0; k < size; k++) { - if (*flash++ != 0xff) { - 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) -{ - volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]); - volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2; - int prot, sect, wait; - unsigned oldpri; - 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"); - } - -#ifdef DEBUG - for (sect = s_first; sect <= s_last; sect++) { - printf("- Erase: Sect: %i @ 0x%08x\n", sect, info->start[sect]); - } -#endif - - /* NOTE: disabling interrupts on Nios can be very bad since it - * also disables the LO_LIMIT exception. It's better here to - * set the interrupt priority to 3 & restore it when we're done. - */ - oldpri = ipri (3); - - /* 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 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]); - *addr = 0xf0; - *(addr+0xAAA/2) = 0xaa; - *(addr+0x554/2) = 0x55; - *(addr+0xAAA/2) = 0x80; - *(addr+0xAAA/2) = 0xaa; - *(addr+0x554/2) = 0x55; - *addr2 = 0x30; - /* Now just wait for 0xffff & provide some user - * feedback while we wait. Here we have to grant - * timer interrupts. Otherwise get_timer() can't - * work right. */ - ipri(oldpri); - start = get_timer (0); - while (*addr2 != 0xffff) { - for (wait = 8; wait; wait--) { - udelay (125 * 1000); - } - putc ('.'); - if (get_timer (start) > CONFIG_SYS_FLASH_ERASE_TOUT) { - printf ("timeout\n"); - return 1; - } - } - oldpri = ipri (3); /* disallow non important irqs again */ - } - } - - printf ("\n"); - *addr = 0xf0; - - /* Restore interrupt priority */ - ipri (oldpri); - - return 0; -} - -/*----------------------------------------------------------------------- - * Copy memory to flash, returns: - * 0 - OK - * 1 - write timeout - * 2 - Flash not erased - */ - -int write_buff (flash_info_t * info, uchar * srcbuffer, ulong addr, ulong cnt) -{ - - volatile CONFIG_SYS_FLASH_WORD_SIZE *cmd = (vu_short *) info->start[0]; - volatile CONFIG_SYS_FLASH_WORD_SIZE *dst = (vu_short *) addr; - CONFIG_SYS_FLASH_WORD_SIZE *src = (void *) srcbuffer; - CONFIG_SYS_FLASH_WORD_SIZE b; - unsigned oldpri; - ulong start; - - cnt /= sizeof(CONFIG_SYS_FLASH_WORD_SIZE); - while (cnt) { - /* Check for sufficient erase */ - b = *src; - if ((*dst & b) != b) { - printf ("%02x : %02x\n", *dst, b); - return (2); - } - - /* Disable interrupts other than window underflow - * (interrupt priority 2) - */ - oldpri = ipri (3); - *(cmd+0xAAA/2) = 0xaa; - *(cmd+0x554/2) = 0x55; - *(cmd+0xAAA/2) = 0xa0; - ipri (oldpri); - *dst = b; - - /* Verify write */ - start = get_timer (0); - while (*dst != b) { - if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) { - *cmd = 0xf0; - return 1; - } - } - dst++; - src++; - cnt--; - } - - *cmd = 0xf0; - return (0); -} |