mirror of
https://xff.cz/git/u-boot/
synced 2025-09-01 16:52:14 +02:00
Initial revision
This commit is contained in:
wdenk
377
common/env_flash.c
Normal file
377
common/env_flash.c
Normal file
@@ -0,0 +1,377 @@
|
||||
/*
|
||||
* (C) Copyright 2000-2002
|
||||
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
||||
*
|
||||
* (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
|
||||
* Andreas Heppel <aheppel@sysgo.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>
|
||||
|
||||
#if defined(CFG_ENV_IS_IN_FLASH) /* Environment is in Flash */
|
||||
|
||||
#include <command.h>
|
||||
#include <environment.h>
|
||||
#include <cmd_nvedit.h>
|
||||
#include <linux/stddef.h>
|
||||
|
||||
#if ((CONFIG_COMMANDS&(CFG_CMD_ENV|CFG_CMD_FLASH)) == (CFG_CMD_ENV|CFG_CMD_FLASH))
|
||||
#define CMD_SAVEENV
|
||||
#elif defined(CFG_ENV_ADDR_REDUND)
|
||||
#error Cannot use CFG_ENV_ADDR_REDUND without CFG_CMD_ENV & CFG_CMD_FLASH
|
||||
#endif
|
||||
|
||||
#if defined(CFG_ENV_SECT_SIZE) && (CFG_ENV_SECT_SIZE > CFG_ENV_SIZE) && \
|
||||
defined(CFG_ENV_ADDR_REDUND)
|
||||
#error CFG_ENV_ADDR_REDUND should not be used when CFG_ENV_SECT_SIZE > CFG_ENV_SIZE
|
||||
#endif
|
||||
|
||||
#if defined(CFG_ENV_SIZE_REDUND) && (CFG_ENV_SIZE_REDUND < CFG_ENV_SIZE)
|
||||
#error CFG_ENV_SIZE_REDUND should not be less then CFG_ENV_SIZE
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_INFERNO
|
||||
# ifdef CFG_ENV_ADDR_REDUND
|
||||
#error CFG_ENV_ADDR_REDUND is not implemented for CONFIG_INFERNO
|
||||
# endif
|
||||
#endif
|
||||
|
||||
char * env_name_spec = "Flash";
|
||||
|
||||
#ifdef ENV_IS_EMBEDDED
|
||||
|
||||
extern uchar environment[];
|
||||
env_t *env_ptr = (env_t *)(&environment[0]);
|
||||
|
||||
#ifdef CMD_SAVEENV
|
||||
/* static env_t *flash_addr = (env_t *)(&environment[0]);-broken on ARM-wd-*/
|
||||
static env_t *flash_addr = (env_t *)CFG_ENV_ADDR;
|
||||
#endif
|
||||
|
||||
#else /* ! ENV_IS_EMBEDDED */
|
||||
|
||||
env_t *env_ptr = (env_t *)CFG_ENV_ADDR;
|
||||
#ifdef CMD_SAVEENV
|
||||
static env_t *flash_addr = (env_t *)CFG_ENV_ADDR;
|
||||
#endif
|
||||
|
||||
#endif /* ENV_IS_EMBEDDED */
|
||||
|
||||
#ifdef CFG_ENV_ADDR_REDUND
|
||||
static env_t *flash_addr_new = (env_t *)CFG_ENV_ADDR_REDUND;
|
||||
|
||||
static ulong end_addr = CFG_ENV_ADDR + CFG_ENV_SIZE - 1;
|
||||
static ulong end_addr_new = CFG_ENV_ADDR_REDUND + CFG_ENV_SIZE_REDUND - 1;
|
||||
|
||||
static uchar active_flag = 1;
|
||||
static uchar obsolete_flag = 0;
|
||||
#endif
|
||||
|
||||
extern uchar default_environment[];
|
||||
extern int default_environment_size;
|
||||
|
||||
|
||||
uchar env_get_char_spec (int index)
|
||||
{
|
||||
DECLARE_GLOBAL_DATA_PTR;
|
||||
|
||||
return ( *((uchar *)(gd->env_addr + index)) );
|
||||
}
|
||||
|
||||
#ifdef CFG_ENV_ADDR_REDUND
|
||||
|
||||
int env_init(void)
|
||||
{
|
||||
DECLARE_GLOBAL_DATA_PTR;
|
||||
|
||||
int crc1_ok =
|
||||
(crc32(0, flash_addr->data, ENV_SIZE) == flash_addr->crc);
|
||||
int crc2_ok =
|
||||
(crc32(0, flash_addr_new->data, ENV_SIZE) == flash_addr_new->crc);
|
||||
|
||||
uchar flag1 = flash_addr->flags;
|
||||
uchar flag2 = flash_addr_new->flags;
|
||||
|
||||
ulong addr_default = (ulong)&default_environment[0];
|
||||
ulong addr1 = (ulong)&(flash_addr->data);
|
||||
ulong addr2 = (ulong)&(flash_addr_new->data);
|
||||
|
||||
if (crc1_ok && ! crc2_ok)
|
||||
{
|
||||
gd->env_addr = addr1;
|
||||
gd->env_valid = 1;
|
||||
}
|
||||
else if (! crc1_ok && crc2_ok)
|
||||
{
|
||||
gd->env_addr = addr2;
|
||||
gd->env_valid = 1;
|
||||
}
|
||||
else if (! crc1_ok && ! crc2_ok)
|
||||
{
|
||||
gd->env_addr = addr_default;
|
||||
gd->env_valid = 0;
|
||||
}
|
||||
else if (flag1 == active_flag && flag2 == obsolete_flag)
|
||||
{
|
||||
gd->env_addr = addr1;
|
||||
gd->env_valid = 1;
|
||||
}
|
||||
else if (flag1 == obsolete_flag && flag2 == active_flag)
|
||||
{
|
||||
gd->env_addr = addr2;
|
||||
gd->env_valid = 1;
|
||||
}
|
||||
else if (flag1 == flag2)
|
||||
{
|
||||
gd->env_addr = addr1;
|
||||
gd->env_valid = 2;
|
||||
}
|
||||
else if (flag1 == 0xFF)
|
||||
{
|
||||
gd->env_addr = addr1;
|
||||
gd->env_valid = 2;
|
||||
}
|
||||
else if (flag2 == 0xFF)
|
||||
{
|
||||
gd->env_addr = addr2;
|
||||
gd->env_valid = 2;
|
||||
}
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
#ifdef CMD_SAVEENV
|
||||
int saveenv(void)
|
||||
{
|
||||
int rc = 1;
|
||||
|
||||
debug ("Protect off %08lX ... %08lX\n",
|
||||
(ulong)flash_addr, end_addr);
|
||||
|
||||
if (flash_sect_protect (0, (ulong)flash_addr, end_addr)) {
|
||||
goto Done;
|
||||
}
|
||||
|
||||
debug ("Protect off %08lX ... %08lX\n",
|
||||
(ulong)flash_addr_new, end_addr_new);
|
||||
|
||||
if (flash_sect_protect (0, (ulong)flash_addr_new, end_addr_new)) {
|
||||
goto Done;
|
||||
}
|
||||
|
||||
puts ("Erasing Flash...");
|
||||
debug (" %08lX ... %08lX ...",
|
||||
(ulong)flash_addr_new, end_addr_new);
|
||||
|
||||
if (flash_sect_erase ((ulong)flash_addr_new, end_addr_new)) {
|
||||
goto Done;
|
||||
}
|
||||
|
||||
puts ("Writing to Flash... ");
|
||||
debug (" %08lX ... %08lX ...",
|
||||
(ulong)&(flash_addr_new->data),
|
||||
sizeof(env_ptr->data)+(ulong)&(flash_addr_new->data));
|
||||
if (flash_write(env_ptr->data,
|
||||
(ulong)&(flash_addr_new->data),
|
||||
sizeof(env_ptr->data)) ||
|
||||
|
||||
flash_write((char *)&(env_ptr->crc),
|
||||
(ulong)&(flash_addr_new->crc),
|
||||
sizeof(env_ptr->crc)) ||
|
||||
|
||||
flash_write((char *)&obsolete_flag,
|
||||
(ulong)&(flash_addr->flags),
|
||||
sizeof(flash_addr->flags)) ||
|
||||
|
||||
flash_write((char *)&active_flag,
|
||||
(ulong)&(flash_addr_new->flags),
|
||||
sizeof(flash_addr_new->flags)))
|
||||
{
|
||||
flash_perror (rc);
|
||||
goto Done;
|
||||
}
|
||||
puts ("done\n");
|
||||
|
||||
{
|
||||
env_t * etmp = flash_addr;
|
||||
ulong ltmp = end_addr;
|
||||
|
||||
flash_addr = flash_addr_new;
|
||||
flash_addr_new = etmp;
|
||||
|
||||
end_addr = end_addr_new;
|
||||
end_addr_new = ltmp;
|
||||
}
|
||||
|
||||
rc = 0;
|
||||
Done:
|
||||
|
||||
/* try to re-protect */
|
||||
(void) flash_sect_protect (1, (ulong)flash_addr, end_addr);
|
||||
(void) flash_sect_protect (1, (ulong)flash_addr_new, end_addr_new);
|
||||
|
||||
return rc;
|
||||
}
|
||||
#endif /* CMD_SAVEENV */
|
||||
|
||||
#else /* ! CFG_ENV_ADDR_REDUND */
|
||||
|
||||
int env_init(void)
|
||||
{
|
||||
DECLARE_GLOBAL_DATA_PTR;
|
||||
|
||||
if (crc32(0, env_ptr->data, ENV_SIZE) == env_ptr->crc) {
|
||||
gd->env_addr = (ulong)&(env_ptr->data);
|
||||
gd->env_valid = 1;
|
||||
} else {
|
||||
gd->env_addr = (ulong)&default_environment[0];
|
||||
gd->env_valid = 0;
|
||||
}
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
#ifdef CMD_SAVEENV
|
||||
|
||||
int saveenv(void)
|
||||
{
|
||||
int len, rc;
|
||||
ulong end_addr;
|
||||
ulong flash_sect_addr;
|
||||
#if defined(CFG_ENV_SECT_SIZE) && (CFG_ENV_SECT_SIZE > CFG_ENV_SIZE)
|
||||
ulong flash_offset;
|
||||
uchar env_buffer[CFG_ENV_SECT_SIZE];
|
||||
#else
|
||||
uchar *env_buffer = (char *)env_ptr;
|
||||
#endif /* CFG_ENV_SECT_SIZE */
|
||||
int rcode = 0;
|
||||
|
||||
#if defined(CFG_ENV_SECT_SIZE) && (CFG_ENV_SECT_SIZE > CFG_ENV_SIZE)
|
||||
|
||||
flash_offset = ((ulong)flash_addr) & (CFG_ENV_SECT_SIZE-1);
|
||||
flash_sect_addr = ((ulong)flash_addr) & ~(CFG_ENV_SECT_SIZE-1);
|
||||
|
||||
debug ( "copy old content: "
|
||||
"sect_addr: %08lX env_addr: %08lX offset: %08lX\n",
|
||||
flash_sect_addr, (ulong)flash_addr, flash_offset);
|
||||
|
||||
/* copy old contents to temporary buffer */
|
||||
memcpy (env_buffer, (void *)flash_sect_addr, CFG_ENV_SECT_SIZE);
|
||||
|
||||
/* copy current environment to temporary buffer */
|
||||
memcpy ((uchar *)((unsigned long)env_buffer + flash_offset),
|
||||
env_ptr,
|
||||
CFG_ENV_SIZE);
|
||||
|
||||
len = CFG_ENV_SECT_SIZE;
|
||||
#else
|
||||
flash_sect_addr = (ulong)flash_addr;
|
||||
len = CFG_ENV_SIZE;
|
||||
#endif /* CFG_ENV_SECT_SIZE */
|
||||
|
||||
#ifndef CONFIG_INFERNO
|
||||
end_addr = flash_sect_addr + len - 1;
|
||||
#else
|
||||
/* this is the last sector, and the size is hardcoded here */
|
||||
/* otherwise we will get stack problems on loading 128 KB environment */
|
||||
end_addr = flash_sect_addr + 0x20000 - 1;
|
||||
#endif
|
||||
|
||||
debug ("Protect off %08lX ... %08lX\n",
|
||||
(ulong)flash_sect_addr, end_addr);
|
||||
|
||||
if (flash_sect_protect (0, flash_sect_addr, end_addr))
|
||||
return 1;
|
||||
|
||||
puts ("Erasing Flash...");
|
||||
if (flash_sect_erase (flash_sect_addr, end_addr))
|
||||
return 1;
|
||||
|
||||
puts ("Writing to Flash... ");
|
||||
rc = flash_write(env_buffer, flash_sect_addr, len);
|
||||
if (rc != 0) {
|
||||
flash_perror (rc);
|
||||
rcode = 1;
|
||||
} else {
|
||||
puts ("done\n");
|
||||
}
|
||||
|
||||
/* try to re-protect */
|
||||
(void) flash_sect_protect (1, flash_sect_addr, end_addr);
|
||||
return rcode;
|
||||
}
|
||||
|
||||
#endif /* CMD_SAVEENV */
|
||||
|
||||
#endif /* CFG_ENV_ADDR_REDUND */
|
||||
|
||||
void env_relocate_spec (void)
|
||||
{
|
||||
#if !defined(ENV_IS_EMBEDDED) || defined(CFG_ENV_ADDR_REDUND)
|
||||
#ifdef CFG_ENV_ADDR_REDUND
|
||||
DECLARE_GLOBAL_DATA_PTR;
|
||||
|
||||
if (gd->env_addr != (ulong)&(flash_addr->data))
|
||||
{
|
||||
env_t * etmp = flash_addr;
|
||||
ulong ltmp = end_addr;
|
||||
|
||||
flash_addr = flash_addr_new;
|
||||
flash_addr_new = etmp;
|
||||
|
||||
end_addr = end_addr_new;
|
||||
end_addr_new = ltmp;
|
||||
}
|
||||
|
||||
if (flash_addr_new->flags != obsolete_flag &&
|
||||
crc32(0, flash_addr_new->data, ENV_SIZE) ==
|
||||
flash_addr_new->crc)
|
||||
{
|
||||
gd->env_valid = 2;
|
||||
flash_sect_protect (0, (ulong)flash_addr_new, end_addr_new);
|
||||
flash_write((char *)&obsolete_flag,
|
||||
(ulong)&(flash_addr_new->flags),
|
||||
sizeof(flash_addr_new->flags));
|
||||
flash_sect_protect (1, (ulong)flash_addr_new, end_addr_new);
|
||||
}
|
||||
|
||||
if (flash_addr->flags != active_flag &&
|
||||
(flash_addr->flags & active_flag) == active_flag)
|
||||
{
|
||||
gd->env_valid = 2;
|
||||
flash_sect_protect (0, (ulong)flash_addr, end_addr);
|
||||
flash_write((char *)&active_flag,
|
||||
(ulong)&(flash_addr->flags),
|
||||
sizeof(flash_addr->flags));
|
||||
flash_sect_protect (1, (ulong)flash_addr, end_addr);
|
||||
}
|
||||
|
||||
if (gd->env_valid == 2)
|
||||
puts ("*** Warning - some problems detected "
|
||||
"reading environment; recovered successfully\n\n");
|
||||
#endif /* CFG_ENV_ADDR_REDUND */
|
||||
memcpy (env_ptr, (void*)flash_addr, CFG_ENV_SIZE);
|
||||
#endif /* ! ENV_IS_EMBEDDED || CFG_ENV_ADDR_REDUND */
|
||||
}
|
||||
|
||||
#endif /* CFG_ENV_IS_IN_FLASH) */
|
||||
Reference in New Issue
Block a user