mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-28 20:15:18 +02:00
9a24ac5b8c
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11108 3c298f89-4303-0410-b956-a3cf2f4a3e73
229 lines
6.0 KiB
C
229 lines
6.0 KiB
C
/*
|
|
* (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 */
|