mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-12 22:33:18 +00:00
b6cba297af
Define env_ptr as static in flash and nand env driver to allow these to compile together. Signed-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com> Reviewed-by: York Sun <york.sun@nxp.com>
393 lines
9 KiB
C
393 lines
9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2000-2010
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
*
|
|
* (C) Copyright 2008
|
|
* Stuart Wood, Lab X Technologies <stuart.wood@labxtechnologies.com>
|
|
*
|
|
* (C) Copyright 2004
|
|
* Jian Zhang, Texas Instruments, jzhang@ti.com.
|
|
*
|
|
* (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
|
|
* Andreas Heppel <aheppel@sysgo.de>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <environment.h>
|
|
#include <linux/stddef.h>
|
|
#include <malloc.h>
|
|
#include <memalign.h>
|
|
#include <nand.h>
|
|
#include <search.h>
|
|
#include <errno.h>
|
|
|
|
#if defined(CONFIG_CMD_SAVEENV) && defined(CONFIG_CMD_NAND) && \
|
|
!defined(CONFIG_SPL_BUILD)
|
|
#define CMD_SAVEENV
|
|
#elif defined(CONFIG_ENV_OFFSET_REDUND)
|
|
#error CONFIG_ENV_OFFSET_REDUND must have CONFIG_CMD_SAVEENV & CONFIG_CMD_NAND
|
|
#endif
|
|
|
|
#if defined(CONFIG_ENV_SIZE_REDUND) && \
|
|
(CONFIG_ENV_SIZE_REDUND != CONFIG_ENV_SIZE)
|
|
#error CONFIG_ENV_SIZE_REDUND should be the same as CONFIG_ENV_SIZE
|
|
#endif
|
|
|
|
#ifndef CONFIG_ENV_RANGE
|
|
#define CONFIG_ENV_RANGE CONFIG_ENV_SIZE
|
|
#endif
|
|
|
|
#if defined(ENV_IS_EMBEDDED)
|
|
static env_t *env_ptr = &environment;
|
|
#elif defined(CONFIG_NAND_ENV_DST)
|
|
static env_t *env_ptr = (env_t *)CONFIG_NAND_ENV_DST;
|
|
#endif /* ENV_IS_EMBEDDED */
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
/*
|
|
* 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 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.
|
|
*/
|
|
static int env_nand_init(void)
|
|
{
|
|
#if defined(ENV_IS_EMBEDDED) || defined(CONFIG_NAND_ENV_DST)
|
|
int crc1_ok = 0, crc2_ok = 0;
|
|
env_t *tmp_env1;
|
|
|
|
#ifdef CONFIG_ENV_OFFSET_REDUND
|
|
env_t *tmp_env2;
|
|
|
|
tmp_env2 = (env_t *)((ulong)env_ptr + CONFIG_ENV_SIZE);
|
|
crc2_ok = crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc;
|
|
#endif
|
|
tmp_env1 = env_ptr;
|
|
crc1_ok = crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc;
|
|
|
|
if (!crc1_ok && !crc2_ok) {
|
|
gd->env_addr = 0;
|
|
gd->env_valid = ENV_INVALID;
|
|
|
|
return 0;
|
|
} else if (crc1_ok && !crc2_ok) {
|
|
gd->env_valid = ENV_VALID;
|
|
}
|
|
#ifdef CONFIG_ENV_OFFSET_REDUND
|
|
else if (!crc1_ok && crc2_ok) {
|
|
gd->env_valid = ENV_REDUND;
|
|
} else {
|
|
/* both ok - check serial */
|
|
if (tmp_env1->flags == 255 && tmp_env2->flags == 0)
|
|
gd->env_valid = ENV_REDUND;
|
|
else if (tmp_env2->flags == 255 && tmp_env1->flags == 0)
|
|
gd->env_valid = ENV_VALID;
|
|
else if (tmp_env1->flags > tmp_env2->flags)
|
|
gd->env_valid = ENV_VALID;
|
|
else if (tmp_env2->flags > tmp_env1->flags)
|
|
gd->env_valid = ENV_REDUND;
|
|
else /* flags are equal - almost impossible */
|
|
gd->env_valid = ENV_VALID;
|
|
}
|
|
|
|
if (gd->env_valid == ENV_REDUND)
|
|
env_ptr = tmp_env2;
|
|
else
|
|
#endif
|
|
if (gd->env_valid == ENV_VALID)
|
|
env_ptr = tmp_env1;
|
|
|
|
gd->env_addr = (ulong)env_ptr->data;
|
|
|
|
#else /* ENV_IS_EMBEDDED || CONFIG_NAND_ENV_DST */
|
|
gd->env_addr = (ulong)&default_environment[0];
|
|
gd->env_valid = ENV_VALID;
|
|
#endif /* ENV_IS_EMBEDDED || CONFIG_NAND_ENV_DST */
|
|
|
|
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.
|
|
*/
|
|
static int writeenv(size_t offset, u_char *buf)
|
|
{
|
|
size_t end = offset + CONFIG_ENV_RANGE;
|
|
size_t amount_saved = 0;
|
|
size_t blocksize, len;
|
|
struct mtd_info *mtd;
|
|
u_char *char_ptr;
|
|
|
|
mtd = get_nand_dev_by_index(0);
|
|
if (!mtd)
|
|
return 1;
|
|
|
|
blocksize = mtd->erasesize;
|
|
len = min(blocksize, (size_t)CONFIG_ENV_SIZE);
|
|
|
|
while (amount_saved < CONFIG_ENV_SIZE && offset < end) {
|
|
if (nand_block_isbad(mtd, offset)) {
|
|
offset += blocksize;
|
|
} else {
|
|
char_ptr = &buf[amount_saved];
|
|
if (nand_write(mtd, offset, &len, char_ptr))
|
|
return 1;
|
|
|
|
offset += blocksize;
|
|
amount_saved += len;
|
|
}
|
|
}
|
|
if (amount_saved != CONFIG_ENV_SIZE)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct nand_env_location {
|
|
const char *name;
|
|
const nand_erase_options_t erase_opts;
|
|
};
|
|
|
|
static int erase_and_write_env(const struct nand_env_location *location,
|
|
u_char *env_new)
|
|
{
|
|
struct mtd_info *mtd;
|
|
int ret = 0;
|
|
|
|
mtd = get_nand_dev_by_index(0);
|
|
if (!mtd)
|
|
return 1;
|
|
|
|
printf("Erasing %s...\n", location->name);
|
|
if (nand_erase_opts(mtd, &location->erase_opts))
|
|
return 1;
|
|
|
|
printf("Writing to %s... ", location->name);
|
|
ret = writeenv(location->erase_opts.offset, env_new);
|
|
puts(ret ? "FAILED!\n" : "OK\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int env_nand_save(void)
|
|
{
|
|
int ret = 0;
|
|
ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
|
|
int env_idx = 0;
|
|
static const struct nand_env_location location[] = {
|
|
{
|
|
.name = "NAND",
|
|
.erase_opts = {
|
|
.length = CONFIG_ENV_RANGE,
|
|
.offset = CONFIG_ENV_OFFSET,
|
|
},
|
|
},
|
|
#ifdef CONFIG_ENV_OFFSET_REDUND
|
|
{
|
|
.name = "redundant NAND",
|
|
.erase_opts = {
|
|
.length = CONFIG_ENV_RANGE,
|
|
.offset = CONFIG_ENV_OFFSET_REDUND,
|
|
},
|
|
},
|
|
#endif
|
|
};
|
|
|
|
|
|
if (CONFIG_ENV_RANGE < CONFIG_ENV_SIZE)
|
|
return 1;
|
|
|
|
ret = env_export(env_new);
|
|
if (ret)
|
|
return ret;
|
|
|
|
#ifdef CONFIG_ENV_OFFSET_REDUND
|
|
env_idx = (gd->env_valid == ENV_VALID);
|
|
#endif
|
|
|
|
ret = erase_and_write_env(&location[env_idx], (u_char *)env_new);
|
|
#ifdef CONFIG_ENV_OFFSET_REDUND
|
|
if (!ret) {
|
|
/* preset other copy for next write */
|
|
gd->env_valid = gd->env_valid == ENV_REDUND ? ENV_VALID :
|
|
ENV_REDUND;
|
|
return ret;
|
|
}
|
|
|
|
env_idx = (env_idx + 1) & 1;
|
|
ret = erase_and_write_env(&location[env_idx], (u_char *)env_new);
|
|
if (!ret)
|
|
printf("Warning: primary env write failed,"
|
|
" redundancy is lost!\n");
|
|
#endif
|
|
|
|
return ret;
|
|
}
|
|
#endif /* CMD_SAVEENV */
|
|
|
|
#if defined(CONFIG_SPL_BUILD)
|
|
static int readenv(size_t offset, u_char *buf)
|
|
{
|
|
return nand_spl_load_image(offset, CONFIG_ENV_SIZE, buf);
|
|
}
|
|
#else
|
|
static int readenv(size_t offset, u_char *buf)
|
|
{
|
|
size_t end = offset + CONFIG_ENV_RANGE;
|
|
size_t amount_loaded = 0;
|
|
size_t blocksize, len;
|
|
struct mtd_info *mtd;
|
|
u_char *char_ptr;
|
|
|
|
mtd = get_nand_dev_by_index(0);
|
|
if (!mtd)
|
|
return 1;
|
|
|
|
blocksize = mtd->erasesize;
|
|
len = min(blocksize, (size_t)CONFIG_ENV_SIZE);
|
|
|
|
while (amount_loaded < CONFIG_ENV_SIZE && offset < end) {
|
|
if (nand_block_isbad(mtd, offset)) {
|
|
offset += blocksize;
|
|
} else {
|
|
char_ptr = &buf[amount_loaded];
|
|
if (nand_read_skip_bad(mtd, offset,
|
|
&len, NULL,
|
|
mtd->size, char_ptr))
|
|
return 1;
|
|
|
|
offset += blocksize;
|
|
amount_loaded += len;
|
|
}
|
|
}
|
|
|
|
if (amount_loaded != CONFIG_ENV_SIZE)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
#endif /* #if defined(CONFIG_SPL_BUILD) */
|
|
|
|
#ifdef CONFIG_ENV_OFFSET_OOB
|
|
int get_nand_env_oob(struct mtd_info *mtd, unsigned long *result)
|
|
{
|
|
struct mtd_oob_ops ops;
|
|
uint32_t oob_buf[ENV_OFFSET_SIZE / sizeof(uint32_t)];
|
|
int ret;
|
|
|
|
ops.datbuf = NULL;
|
|
ops.mode = MTD_OOB_AUTO;
|
|
ops.ooboffs = 0;
|
|
ops.ooblen = ENV_OFFSET_SIZE;
|
|
ops.oobbuf = (void *)oob_buf;
|
|
|
|
ret = mtd->read_oob(mtd, ENV_OFFSET_SIZE, &ops);
|
|
if (ret) {
|
|
printf("error reading OOB block 0\n");
|
|
return ret;
|
|
}
|
|
|
|
if (oob_buf[0] == ENV_OOB_MARKER) {
|
|
*result = ovoid ob_buf[1] * mtd->erasesize;
|
|
} else if (oob_buf[0] == ENV_OOB_MARKER_OLD) {
|
|
*result = oob_buf[1];
|
|
} else {
|
|
printf("No dynamic environment marker in OOB block 0\n");
|
|
return -ENOENT;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_ENV_OFFSET_REDUND
|
|
static int env_nand_load(void)
|
|
{
|
|
#if defined(ENV_IS_EMBEDDED)
|
|
return 0;
|
|
#else
|
|
int read1_fail, read2_fail;
|
|
env_t *tmp_env1, *tmp_env2;
|
|
int ret = 0;
|
|
|
|
tmp_env1 = (env_t *)malloc(CONFIG_ENV_SIZE);
|
|
tmp_env2 = (env_t *)malloc(CONFIG_ENV_SIZE);
|
|
if (tmp_env1 == NULL || tmp_env2 == NULL) {
|
|
puts("Can't allocate buffers for environment\n");
|
|
set_default_env("malloc() failed", 0);
|
|
ret = -EIO;
|
|
goto done;
|
|
}
|
|
|
|
read1_fail = readenv(CONFIG_ENV_OFFSET, (u_char *) tmp_env1);
|
|
read2_fail = readenv(CONFIG_ENV_OFFSET_REDUND, (u_char *) tmp_env2);
|
|
|
|
ret = env_import_redund((char *)tmp_env1, read1_fail, (char *)tmp_env2,
|
|
read2_fail);
|
|
|
|
done:
|
|
free(tmp_env1);
|
|
free(tmp_env2);
|
|
|
|
return ret;
|
|
#endif /* ! ENV_IS_EMBEDDED */
|
|
}
|
|
#else /* ! CONFIG_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.
|
|
*/
|
|
static int env_nand_load(void)
|
|
{
|
|
#if !defined(ENV_IS_EMBEDDED)
|
|
int ret;
|
|
ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
|
|
|
|
#if defined(CONFIG_ENV_OFFSET_OOB)
|
|
struct mtd_info *mtd = get_nand_dev_by_index(0);
|
|
/*
|
|
* If unable to read environment offset from NAND OOB then fall through
|
|
* to the normal environment reading code below
|
|
*/
|
|
if (mtd && !get_nand_env_oob(mtd, &nand_env_oob_offset)) {
|
|
printf("Found Environment offset in OOB..\n");
|
|
} else {
|
|
set_default_env("no env offset in OOB", 0);
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
ret = readenv(CONFIG_ENV_OFFSET, (u_char *)buf);
|
|
if (ret) {
|
|
set_default_env("readenv() failed", 0);
|
|
return -EIO;
|
|
}
|
|
|
|
return env_import(buf, 1);
|
|
#endif /* ! ENV_IS_EMBEDDED */
|
|
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_ENV_OFFSET_REDUND */
|
|
|
|
U_BOOT_ENV_LOCATION(nand) = {
|
|
.location = ENVL_NAND,
|
|
ENV_NAME("NAND")
|
|
.load = env_nand_load,
|
|
#if defined(CMD_SAVEENV)
|
|
.save = env_save_ptr(env_nand_save),
|
|
#endif
|
|
.init = env_nand_init,
|
|
};
|