+// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2000-2010
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Andreas Heppel <aheppel@sysgo.de>
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
return ret_val;
}
-void set_default_env(const char *s)
+void set_default_env(const char *s, int flags)
{
- int flags = 0;
-
if (sizeof(default_environment) > ENV_SIZE) {
puts("*** Error - default environment is too large\n\n");
return;
}
if (s) {
- if (*s == '!') {
+ if ((flags & H_INTERACTIVE) == 0) {
printf("*** Warning - %s, "
- "using default environment\n\n",
- s + 1);
+ "using default environment\n\n", s);
} else {
- flags = H_INTERACTIVE;
puts(s);
}
} else {
- puts("Using default environment\n\n");
+ debug("Using default environment\n");
}
if (himport_r(&env_htab, (char *)default_environment,
sizeof(default_environment), '\0', flags, 0,
0, NULL) == 0)
- pr_err("Environment import failed: errno = %d\n", errno);
+ pr_err("## Error: Environment import failed: errno = %d\n",
+ errno);
gd->flags |= GD_FLG_ENV_READY;
gd->flags |= GD_FLG_ENV_DEFAULT;
/* [re]set individual variables to their value in the default environment */
-int set_default_vars(int nvars, char * const vars[])
+int set_default_vars(int nvars, char * const vars[], int flags)
{
/*
* Special use-case: import from default environment
* (and use \0 as a separator)
*/
+ flags |= H_NOCLEAR;
return himport_r(&env_htab, (const char *)default_environment,
sizeof(default_environment), '\0',
- H_NOCLEAR | H_INTERACTIVE, 0, nvars, vars);
+ flags, 0, nvars, vars);
}
-#ifdef CONFIG_ENV_AES
-#include <uboot_aes.h>
-/**
- * env_aes_cbc_get_key() - Get AES-128-CBC key for the environment
- *
- * This function shall return 16-byte array containing AES-128 key used
- * to encrypt and decrypt the environment. This function must be overridden
- * by the implementer as otherwise the environment encryption will not
- * work.
- */
-__weak uint8_t *env_aes_cbc_get_key(void)
-{
- return NULL;
-}
-
-static int env_aes_cbc_crypt(env_t *env, const int enc)
-{
- unsigned char *data = env->data;
- uint8_t *key;
- uint8_t key_exp[AES_EXPAND_KEY_LENGTH];
- uint32_t aes_blocks;
-
- key = env_aes_cbc_get_key();
- if (!key)
- return -EINVAL;
-
- /* First we expand the key. */
- aes_expand_key(key, key_exp);
-
- /* Calculate the number of AES blocks to encrypt. */
- aes_blocks = ENV_SIZE / AES_KEY_LENGTH;
-
- if (enc)
- aes_cbc_encrypt_blocks(key_exp, data, data, aes_blocks);
- else
- aes_cbc_decrypt_blocks(key_exp, data, data, aes_blocks);
-
- return 0;
-}
-#else
-static inline int env_aes_cbc_crypt(env_t *env, const int enc)
-{
- return 0;
-}
-#endif
-
/*
* Check if CRC is valid and (if yes) import the environment.
* Note that "buf" may or may not be aligned.
int env_import(const char *buf, int check)
{
env_t *ep = (env_t *)buf;
- int ret;
if (check) {
uint32_t crc;
memcpy(&crc, &ep->crc, sizeof(crc));
if (crc32(0, ep->data, ENV_SIZE) != crc) {
- set_default_env("!bad CRC");
- return 0;
+ set_default_env("bad CRC", 0);
+ return -EIO;
}
}
- /* Decrypt the env if desired. */
- ret = env_aes_cbc_crypt(ep, 0);
- if (ret) {
- pr_err("Failed to decrypt env!\n");
- set_default_env("!import failed");
- return ret;
- }
-
if (himport_r(&env_htab, (char *)ep->data, ENV_SIZE, '\0', 0, 0,
0, NULL)) {
gd->flags |= GD_FLG_ENV_READY;
- return 1;
+ return 0;
}
pr_err("Cannot import environment: errno = %d\n", errno);
- set_default_env("!import failed");
+ set_default_env("import failed", 0);
- return 0;
+ return -EIO;
}
#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
static unsigned char env_flags;
-int env_import_redund(const char *buf1, const char *buf2)
+int env_import_redund(const char *buf1, int buf1_read_fail,
+ const char *buf2, int buf2_read_fail)
{
int crc1_ok, crc2_ok;
env_t *ep, *tmp_env1, *tmp_env2;
tmp_env1 = (env_t *)buf1;
tmp_env2 = (env_t *)buf2;
+ if (buf1_read_fail && buf2_read_fail) {
+ puts("*** Error - No Valid Environment Area found\n");
+ } else if (buf1_read_fail || buf2_read_fail) {
+ puts("*** Warning - some problems detected ");
+ puts("reading environment; recovered successfully\n");
+ }
+
+ if (buf1_read_fail && buf2_read_fail) {
+ set_default_env("bad env area", 0);
+ return -EIO;
+ } else if (!buf1_read_fail && buf2_read_fail) {
+ gd->env_valid = ENV_VALID;
+ return env_import((char *)tmp_env1, 1);
+ } else if (buf1_read_fail && !buf2_read_fail) {
+ gd->env_valid = ENV_REDUND;
+ return env_import((char *)tmp_env2, 1);
+ }
+
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) {
- set_default_env("!bad CRC");
- return 0;
+ set_default_env("bad CRC", 0);
+ return -EIO;
} else if (crc1_ok && !crc2_ok) {
gd->env_valid = ENV_VALID;
} else if (!crc1_ok && crc2_ok) {
{
char *res;
ssize_t len;
- int ret;
res = (char *)env_out->data;
len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL);
return 1;
}
- /* Encrypt the env if desired. */
- ret = env_aes_cbc_crypt(env_out, 1);
- if (ret)
- return ret;
-
env_out->crc = crc32(0, env_out->data, ENV_SIZE);
#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
{
#if defined(CONFIG_NEEDS_MANUAL_RELOC)
env_reloc();
+ env_fix_drivers();
env_htab.change_ok += gd->reloc_off;
#endif
if (gd->env_valid == ENV_INVALID) {
#if defined(CONFIG_ENV_IS_NOWHERE) || defined(CONFIG_SPL_BUILD)
/* Environment not changable */
- set_default_env(NULL);
+ set_default_env(NULL, 0);
#else
bootstage_error(BOOTSTAGE_ID_NET_CHECKSUM);
- set_default_env("!bad CRC");
+ set_default_env("bad CRC", 0);
#endif
} else {
env_load();