+++ /dev/null
-/*
- * (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
- */
-
-/* #define DEBUG */
-
-#include <common.h>
-#include <flash.h>
-
-#if !defined(CFG_NO_FLASH)
-
-extern flash_info_t flash_info[]; /* info for FLASH chips */
-
-/*-----------------------------------------------------------------------
- * Functions
- */
-
-/*-----------------------------------------------------------------------
- * Set protection status for monitor sectors
- *
- * The monitor is always located in the _first_ Flash bank.
- * If necessary you have to map the second bank at lower addresses.
- */
-void
-flash_protect (int flag, ulong from, ulong to, flash_info_t *info)
-{
- ulong b_end = info->start[0] + info->size - 1; /* bank end address */
- short s_end = info->sector_count - 1; /* index of last sector */
- int i;
-
- debug ("flash_protect %s: from 0x%08lX to 0x%08lX\n",
- (flag & FLAG_PROTECT_SET) ? "ON" :
- (flag & FLAG_PROTECT_CLEAR) ? "OFF" : "???",
- from, to);
-
- /* Do nothing if input data is bad. */
- if (info->sector_count == 0 || info->size == 0 || to < from) {
- return;
- }
-
- /* There is nothing to do if we have no data about the flash
- * or the protect range and flash range don't overlap.
- */
- if (info->flash_id == FLASH_UNKNOWN ||
- to < info->start[0] || from > b_end) {
- return;
- }
-
- for (i=0; i<info->sector_count; ++i) {
- ulong end; /* last address in current sect */
-
- end = (i == s_end) ? b_end : info->start[i + 1] - 1;
-
- /* Update protection if any part of the sector
- * is in the specified range.
- */
- if (from <= end && to >= info->start[i]) {
- if (flag & FLAG_PROTECT_CLEAR) {
-#if defined(CFG_FLASH_PROTECTION)
- flash_real_protect(info, i, 0);
-#else
- info->protect[i] = 0;
-#endif /* CFG_FLASH_PROTECTION */
- debug ("protect off %d\n", i);
- }
- else if (flag & FLAG_PROTECT_SET) {
-#if defined(CFG_FLASH_PROTECTION)
- flash_real_protect(info, i, 1);
-#else
- info->protect[i] = 1;
-#endif /* CFG_FLASH_PROTECTION */
- debug ("protect on %d\n", i);
- }
- }
- }
-}
-
-/*-----------------------------------------------------------------------
- */
-
-flash_info_t *
-addr2info (ulong addr)
-{
-#ifndef CONFIG_SPD823TS
- flash_info_t *info;
- int i;
-
- for (i=0, info=&flash_info[0]; i<CFG_MAX_FLASH_BANKS; ++i, ++info) {
- if (info->flash_id != FLASH_UNKNOWN &&
- addr >= info->start[0] &&
- /* WARNING - The '- 1' is needed if the flash
- * is at the end of the address space, since
- * info->start[0] + info->size wraps back to 0.
- * Please don't change this unless you understand this.
- */
- addr <= info->start[0] + info->size - 1) {
- return (info);
- }
- }
-#endif /* CONFIG_SPD823TS */
-
- return (NULL);
-}
-
-/*-----------------------------------------------------------------------
- * Copy memory to flash.
- * Make sure all target addresses are within Flash bounds,
- * and no protected sectors are hit.
- * Returns:
- * ERR_OK 0 - OK
- * ERR_TIMOUT 1 - write timeout
- * ERR_NOT_ERASED 2 - Flash not erased
- * ERR_PROTECTED 4 - target range includes protected sectors
- * ERR_INVAL 8 - target address not in Flash memory
- * ERR_ALIGN 16 - target address not aligned on boundary
- * (only some targets require alignment)
- */
-int
-flash_write (char *src, ulong addr, ulong cnt)
-{
-#ifdef CONFIG_SPD823TS
- return (ERR_TIMOUT); /* any other error codes are possible as well */
-#else
- int i;
- ulong end = addr + cnt - 1;
- flash_info_t *info_first = addr2info (addr);
- flash_info_t *info_last = addr2info (end );
- flash_info_t *info;
-
- if (cnt == 0) {
- return (ERR_OK);
- }
-
- if (!info_first || !info_last) {
- return (ERR_INVAL);
- }
-
- for (info = info_first; info <= info_last; ++info) {
- ulong b_end = info->start[0] + info->size; /* bank end addr */
- short s_end = info->sector_count - 1;
- for (i=0; i<info->sector_count; ++i) {
- ulong e_addr = (i == s_end) ? b_end : info->start[i + 1];
-
- if ((end >= info->start[i]) && (addr < e_addr) &&
- (info->protect[i] != 0) ) {
- return (ERR_PROTECTED);
- }
- }
- }
-
- /* finally write data to flash */
- for (info = info_first; info <= info_last && cnt>0; ++info) {
- ulong len;
-
- len = info->start[0] + info->size - addr;
- if (len > cnt)
- len = cnt;
- if ((i = write_buff(info, (uchar *)src, addr, len)) != 0) {
- return (i);
- }
- cnt -= len;
- addr += len;
- src += len;
- }
- return (ERR_OK);
-#endif /* CONFIG_SPD823TS */
-}
-
-/*-----------------------------------------------------------------------
- */
-
-void flash_perror (int err)
-{
- switch (err) {
- case ERR_OK:
- break;
- case ERR_TIMOUT:
- puts ("Timeout writing to Flash\n");
- break;
- case ERR_NOT_ERASED:
- puts ("Flash not Erased\n");
- break;
- case ERR_PROTECTED:
- puts ("Can't write to protected Flash sectors\n");
- break;
- case ERR_INVAL:
- puts ("Outside available Flash\n");
- break;
- case ERR_ALIGN:
- puts ("Start and/or end address not on sector boundary\n");
- break;
- case ERR_UNKNOWN_FLASH_VENDOR:
- puts ("Unknown Vendor of Flash\n");
- break;
- case ERR_UNKNOWN_FLASH_TYPE:
- puts ("Unknown Type of Flash\n");
- break;
- case ERR_PROG_ERROR:
- puts ("General Flash Programming Error\n");
- break;
- default:
- printf ("%s[%d] FIXME: rc=%d\n", __FILE__, __LINE__, err);
- break;
- }
-}
-
-/*-----------------------------------------------------------------------
- */
-#endif /* !CFG_NO_FLASH */
projects / openwrt / svn-archive / archive.git / blobdiff