upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
305 lines
7.7 KiB
305 lines
7.7 KiB
/*
|
|
* (C) Copyright 2004
|
|
* Jian Zhang, Texas Instruments, jzhang@ti.com.
|
|
|
|
* (C) Copyright 2000-2006
|
|
* 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_NAND) /* Environment is in Nand Flash */
|
|
|
|
#include <command.h>
|
|
#include <environment.h>
|
|
#include <linux/stddef.h>
|
|
#include <malloc.h>
|
|
#include <nand.h>
|
|
|
|
#if defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_NAND)
|
|
#define CMD_SAVEENV
|
|
#elif defined(CFG_ENV_OFFSET_REDUND)
|
|
#error Cannot use CFG_ENV_OFFSET_REDUND without CONFIG_CMD_ENV & CONFIG_CMD_NAND
|
|
#endif
|
|
|
|
#if defined(CFG_ENV_SIZE_REDUND) && (CFG_ENV_SIZE_REDUND != CFG_ENV_SIZE)
|
|
#error CFG_ENV_SIZE_REDUND should be the same as CFG_ENV_SIZE
|
|
#endif
|
|
|
|
#ifdef CONFIG_INFERNO
|
|
#error CONFIG_INFERNO not supported yet
|
|
#endif
|
|
|
|
int nand_legacy_rw (struct nand_chip* nand, int cmd,
|
|
size_t start, size_t len,
|
|
size_t * retlen, u_char * buf);
|
|
|
|
/* info for NAND chips, defined in drivers/mtd/nand/nand.c */
|
|
extern nand_info_t nand_info[];
|
|
|
|
/* references to names in env_common.c */
|
|
extern uchar default_environment[];
|
|
extern int default_environment_size;
|
|
|
|
char * env_name_spec = "NAND";
|
|
|
|
|
|
#ifdef ENV_IS_EMBEDDED
|
|
extern uchar environment[];
|
|
env_t *env_ptr = (env_t *)(&environment[0]);
|
|
#else /* ! ENV_IS_EMBEDDED */
|
|
env_t *env_ptr = 0;
|
|
#endif /* ENV_IS_EMBEDDED */
|
|
|
|
|
|
/* local functions */
|
|
#if !defined(ENV_IS_EMBEDDED)
|
|
static void use_default(void);
|
|
#endif
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
uchar env_get_char_spec (int index)
|
|
{
|
|
return ( *((uchar *)(gd->env_addr + index)) );
|
|
}
|
|
|
|
|
|
/* this is called before nand_init()
|
|
* so we can't read Nand to validate env data.
|
|
* Mark it OK for now. env_relocate() in env_common.c
|
|
* will call our relocate function which will does
|
|
* the real validation.
|
|
*
|
|
* When using a NAND boot image (like sequoia_nand), the environment
|
|
* can be embedded or attached to the U-Boot image in NAND flash. This way
|
|
* the SPL loads not only the U-Boot image from NAND but also the
|
|
* environment.
|
|
*/
|
|
int env_init(void)
|
|
{
|
|
#if defined(ENV_IS_EMBEDDED)
|
|
ulong total;
|
|
int crc1_ok = 0, crc2_ok = 0;
|
|
env_t *tmp_env1, *tmp_env2;
|
|
|
|
total = CFG_ENV_SIZE;
|
|
|
|
tmp_env1 = env_ptr;
|
|
tmp_env2 = (env_t *)((ulong)env_ptr + CFG_ENV_SIZE);
|
|
|
|
crc1_ok = (crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc);
|
|
crc2_ok = (crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc);
|
|
|
|
if (!crc1_ok && !crc2_ok)
|
|
gd->env_valid = 0;
|
|
else if(crc1_ok && !crc2_ok)
|
|
gd->env_valid = 1;
|
|
else if(!crc1_ok && crc2_ok)
|
|
gd->env_valid = 2;
|
|
else {
|
|
/* both ok - check serial */
|
|
if(tmp_env1->flags == 255 && tmp_env2->flags == 0)
|
|
gd->env_valid = 2;
|
|
else if(tmp_env2->flags == 255 && tmp_env1->flags == 0)
|
|
gd->env_valid = 1;
|
|
else if(tmp_env1->flags > tmp_env2->flags)
|
|
gd->env_valid = 1;
|
|
else if(tmp_env2->flags > tmp_env1->flags)
|
|
gd->env_valid = 2;
|
|
else /* flags are equal - almost impossible */
|
|
gd->env_valid = 1;
|
|
}
|
|
|
|
if (gd->env_valid == 1)
|
|
env_ptr = tmp_env1;
|
|
else if (gd->env_valid == 2)
|
|
env_ptr = tmp_env2;
|
|
#else /* ENV_IS_EMBEDDED */
|
|
gd->env_addr = (ulong)&default_environment[0];
|
|
gd->env_valid = 1;
|
|
#endif /* ENV_IS_EMBEDDED */
|
|
|
|
return (0);
|
|
}
|
|
|
|
#ifdef CMD_SAVEENV
|
|
/*
|
|
* The legacy NAND code saved the environment in the first NAND device i.e.,
|
|
* nand_dev_desc + 0. This is also the behaviour using the new NAND code.
|
|
*/
|
|
#ifdef CFG_ENV_OFFSET_REDUND
|
|
int saveenv(void)
|
|
{
|
|
ulong total;
|
|
int ret = 0;
|
|
|
|
env_ptr->flags++;
|
|
total = CFG_ENV_SIZE;
|
|
|
|
if(gd->env_valid == 1) {
|
|
puts ("Erasing redundant Nand...");
|
|
if (nand_erase(&nand_info[0],
|
|
CFG_ENV_OFFSET_REDUND, CFG_ENV_SIZE))
|
|
return 1;
|
|
puts ("Writing to redundant Nand... ");
|
|
ret = nand_write(&nand_info[0], CFG_ENV_OFFSET_REDUND, &total,
|
|
(u_char*) env_ptr);
|
|
} else {
|
|
puts ("Erasing Nand...");
|
|
if (nand_erase(&nand_info[0],
|
|
CFG_ENV_OFFSET, CFG_ENV_SIZE))
|
|
return 1;
|
|
|
|
puts ("Writing to Nand... ");
|
|
ret = nand_write(&nand_info[0], CFG_ENV_OFFSET, &total,
|
|
(u_char*) env_ptr);
|
|
}
|
|
if (ret || total != CFG_ENV_SIZE)
|
|
return 1;
|
|
|
|
puts ("done\n");
|
|
gd->env_valid = (gd->env_valid == 2 ? 1 : 2);
|
|
return ret;
|
|
}
|
|
#else /* ! CFG_ENV_OFFSET_REDUND */
|
|
int saveenv(void)
|
|
{
|
|
ulong total;
|
|
int ret = 0;
|
|
|
|
puts ("Erasing Nand...");
|
|
if (nand_erase(&nand_info[0], CFG_ENV_OFFSET, CFG_ENV_SIZE))
|
|
return 1;
|
|
|
|
puts ("Writing to Nand... ");
|
|
total = CFG_ENV_SIZE;
|
|
ret = nand_write(&nand_info[0], CFG_ENV_OFFSET, &total, (u_char*)env_ptr);
|
|
if (ret || total != CFG_ENV_SIZE)
|
|
return 1;
|
|
|
|
puts ("done\n");
|
|
return ret;
|
|
}
|
|
#endif /* CFG_ENV_OFFSET_REDUND */
|
|
#endif /* CMD_SAVEENV */
|
|
|
|
#ifdef CFG_ENV_OFFSET_REDUND
|
|
void env_relocate_spec (void)
|
|
{
|
|
#if !defined(ENV_IS_EMBEDDED)
|
|
ulong total;
|
|
int crc1_ok = 0, crc2_ok = 0;
|
|
env_t *tmp_env1, *tmp_env2;
|
|
|
|
total = CFG_ENV_SIZE;
|
|
|
|
tmp_env1 = (env_t *) malloc(CFG_ENV_SIZE);
|
|
tmp_env2 = (env_t *) malloc(CFG_ENV_SIZE);
|
|
|
|
nand_read(&nand_info[0], CFG_ENV_OFFSET, &total,
|
|
(u_char*) tmp_env1);
|
|
nand_read(&nand_info[0], CFG_ENV_OFFSET_REDUND, &total,
|
|
(u_char*) tmp_env2);
|
|
|
|
crc1_ok = (crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc);
|
|
crc2_ok = (crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc);
|
|
|
|
if(!crc1_ok && !crc2_ok)
|
|
return use_default();
|
|
else if(crc1_ok && !crc2_ok)
|
|
gd->env_valid = 1;
|
|
else if(!crc1_ok && crc2_ok)
|
|
gd->env_valid = 2;
|
|
else {
|
|
/* both ok - check serial */
|
|
if(tmp_env1->flags == 255 && tmp_env2->flags == 0)
|
|
gd->env_valid = 2;
|
|
else if(tmp_env2->flags == 255 && tmp_env1->flags == 0)
|
|
gd->env_valid = 1;
|
|
else if(tmp_env1->flags > tmp_env2->flags)
|
|
gd->env_valid = 1;
|
|
else if(tmp_env2->flags > tmp_env1->flags)
|
|
gd->env_valid = 2;
|
|
else /* flags are equal - almost impossible */
|
|
gd->env_valid = 1;
|
|
|
|
}
|
|
|
|
free(env_ptr);
|
|
if(gd->env_valid == 1) {
|
|
env_ptr = tmp_env1;
|
|
free(tmp_env2);
|
|
} else {
|
|
env_ptr = tmp_env2;
|
|
free(tmp_env1);
|
|
}
|
|
|
|
#endif /* ! ENV_IS_EMBEDDED */
|
|
}
|
|
#else /* ! CFG_ENV_OFFSET_REDUND */
|
|
/*
|
|
* The legacy NAND code saved the environment in the first NAND device i.e.,
|
|
* nand_dev_desc + 0. This is also the behaviour using the new NAND code.
|
|
*/
|
|
void env_relocate_spec (void)
|
|
{
|
|
#if !defined(ENV_IS_EMBEDDED)
|
|
ulong total;
|
|
int ret;
|
|
|
|
total = CFG_ENV_SIZE;
|
|
ret = nand_read(&nand_info[0], CFG_ENV_OFFSET, &total, (u_char*)env_ptr);
|
|
if (ret || total != CFG_ENV_SIZE)
|
|
return use_default();
|
|
|
|
if (crc32(0, env_ptr->data, ENV_SIZE) != env_ptr->crc)
|
|
return use_default();
|
|
#endif /* ! ENV_IS_EMBEDDED */
|
|
}
|
|
#endif /* CFG_ENV_OFFSET_REDUND */
|
|
|
|
#if !defined(ENV_IS_EMBEDDED)
|
|
static void use_default()
|
|
{
|
|
puts ("*** Warning - bad CRC or NAND, using default environment\n\n");
|
|
|
|
if (default_environment_size > CFG_ENV_SIZE){
|
|
puts ("*** Error - default environment is too large\n\n");
|
|
return;
|
|
}
|
|
|
|
memset (env_ptr, 0, sizeof(env_t));
|
|
memcpy (env_ptr->data,
|
|
default_environment,
|
|
default_environment_size);
|
|
env_ptr->crc = crc32(0, env_ptr->data, ENV_SIZE);
|
|
gd->env_valid = 1;
|
|
|
|
}
|
|
#endif
|
|
|
|
#endif /* CFG_ENV_IS_IN_NAND */
|
|
|