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env: Discern environment coming from external storage 

Add another custom environment flag which discerns environment coming
from external storage from environment set by U-Boot itself.

Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Marek Vasut 2020-07-07 20:51:35 +02:00 committed by Tom Rini
parent ef9bef2bfe
commit 890feecaab
15 changed files with 29 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
env/common.c vendored
View File

@ -110,7 +110,7 @@ int env_set_default_vars(int nvars, char * const vars[], int flags)
* 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)
int env_import(const char *buf, int check, int flags)
{
env_t *ep = (env_t *)buf;
@ -125,7 +125,7 @@ int env_import(const char *buf, int check)
}
}
if (himport_r(&env_htab, (char *)ep->data, ENV_SIZE, '\0', 0, 0,
if (himport_r(&env_htab, (char *)ep->data, ENV_SIZE, '\0', flags, 0,
0, NULL)) {
gd->flags |= GD_FLG_ENV_READY;
return 0;
@ -142,7 +142,8 @@ int env_import(const char *buf, int check)
static unsigned char env_flags;
int env_import_redund(const char *buf1, int buf1_read_fail,
const char *buf2, int buf2_read_fail)
const char *buf2, int buf2_read_fail,
int flags)
{
int crc1_ok, crc2_ok;
env_t *ep, *tmp_env1, *tmp_env2;
@ -162,10 +163,10 @@ int env_import_redund(const char *buf1, int buf1_read_fail,
return -EIO;
} else if (!buf1_read_fail && buf2_read_fail) {
gd->env_valid = ENV_VALID;
return env_import((char *)tmp_env1, 1);
return env_import((char *)tmp_env1, 1, flags);
} else if (buf1_read_fail && !buf2_read_fail) {
gd->env_valid = ENV_REDUND;
return env_import((char *)tmp_env2, 1);
return env_import((char *)tmp_env2, 1, flags);
}
crc1_ok = crc32(0, tmp_env1->data, ENV_SIZE) ==
@ -200,7 +201,7 @@ int env_import_redund(const char *buf1, int buf1_read_fail,
ep = tmp_env2;
env_flags = ep->flags;
return env_import((char *)ep, 0);
return env_import((char *)ep, 0, flags);
}
#endif /* CONFIG_SYS_REDUNDAND_ENVIRONMENT */

2
env/eeprom.c vendored
View File

@ -188,7 +188,7 @@ static int env_eeprom_load(void)
eeprom_bus_read(CONFIG_SYS_DEF_EEPROM_ADDR,
off, (uchar *)buf_env, CONFIG_ENV_SIZE);
return env_import(buf_env, 1);
return env_import(buf_env, 1, H_EXTERNAL);
}
static int env_eeprom_save(void)

2
env/ext4.c vendored
View File

@ -156,7 +156,7 @@ static int env_ext4_load(void)
goto err_env_relocate;
}
err = env_import(buf, 1);
err = env_import(buf, 1, H_EXTERNAL);
if (!err)
gd->env_valid = ENV_VALID;

2
env/fat.c vendored
View File

@ -144,7 +144,7 @@ static int env_fat_load(void)
goto err_env_relocate;
}
return env_import(buf, 1);
return env_import(buf, 1, H_EXTERNAL);
err_env_relocate:
env_set_default(NULL, 0);

2
env/flash.c vendored
View File

@ -351,7 +351,7 @@ static int env_flash_load(void)
"reading environment; recovered successfully\n\n");
#endif /* CONFIG_ENV_ADDR_REDUND */
return env_import((char *)flash_addr, 1);
return env_import((char *)flash_addr, 1, H_EXTERNAL);
}
#endif /* LOADENV */

4
env/mmc.c vendored
View File

@ -338,7 +338,7 @@ static int env_mmc_load(void)
read2_fail = read_env(mmc, CONFIG_ENV_SIZE, offset2, tmp_env2);
ret = env_import_redund((char *)tmp_env1, read1_fail, (char *)tmp_env2,
read2_fail);
read2_fail, H_EXTERNAL);
fini:
fini_mmc_for_env(mmc);
@ -380,7 +380,7 @@ static int env_mmc_load(void)
goto fini;
}
ret = env_import(buf, 1);
ret = env_import(buf, 1, H_EXTERNAL);
if (!ret) {
ep = (env_t *)buf;
gd->env_addr = (ulong)&ep->data;

4
env/nand.c vendored
View File

@ -331,7 +331,7 @@ static int env_nand_load(void)
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);
read2_fail, H_EXTERNAL);
done:
free(tmp_env1);
@ -372,7 +372,7 @@ static int env_nand_load(void)
return -EIO;
}
return env_import(buf, 1);
return env_import(buf, 1, H_EXTERNAL);
#endif /* ! ENV_IS_EMBEDDED */
return 0;

2
env/nvram.c vendored
View File

@ -64,7 +64,7 @@ static int env_nvram_load(void)
#else
memcpy(buf, (void *)CONFIG_ENV_ADDR, CONFIG_ENV_SIZE);
#endif
return env_import(buf, 1);
return env_import(buf, 1, H_EXTERNAL);
}
static int env_nvram_save(void)

2
env/onenand.c vendored
View File

@ -55,7 +55,7 @@ static int env_onenand_load(void)
mtd->writesize = MAX_ONENAND_PAGESIZE;
#endif /* !ENV_IS_EMBEDDED */
rc = env_import(buf, 1);
rc = env_import(buf, 1, H_EXTERNAL);
if (!rc)
gd->env_valid = ENV_VALID;

2
env/remote.c vendored
View File

@ -45,7 +45,7 @@ static int env_remote_save(void)
static int env_remote_load(void)
{
#ifndef ENV_IS_EMBEDDED
return env_import((char *)env_ptr, 1);
return env_import((char *)env_ptr, 1, H_EXTERNAL);
#endif
return 0;

2
env/sata.c vendored
View File

@ -111,7 +111,7 @@ static void env_sata_load(void)
return -EIO;
}
return env_import(buf, 1);
return env_import(buf, 1, H_EXTERNAL);
}
U_BOOT_ENV_LOCATION(sata) = {

4
env/sf.c vendored
View File

@ -172,7 +172,7 @@ static int env_sf_load(void)
CONFIG_ENV_SIZE, tmp_env2);
ret = env_import_redund((char *)tmp_env1, read1_fail, (char *)tmp_env2,
read2_fail);
read2_fail, H_EXTERNAL);
spi_flash_free(env_flash);
env_flash = NULL;
@ -265,7 +265,7 @@ static int env_sf_load(void)
goto err_read;
}
ret = env_import(buf, 1);
ret = env_import(buf, 1, H_EXTERNAL);
if (!ret)
gd->env_valid = ENV_VALID;

4
env/ubi.c vendored
View File

@ -141,7 +141,7 @@ static int env_ubi_load(void)
CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME_REDUND);
return env_import_redund((char *)tmp_env1, read1_fail, (char *)tmp_env2,
read2_fail);
read2_fail, H_EXTERNAL);
}
#else /* ! CONFIG_SYS_REDUNDAND_ENVIRONMENT */
static int env_ubi_load(void)
@ -172,7 +172,7 @@ static int env_ubi_load(void)
return -EIO;
}
return env_import(buf, 1);
return env_import(buf, 1, H_EXTERNAL);
}
#endif /* CONFIG_SYS_REDUNDAND_ENVIRONMENT */

7
include/env.h
View File

@ -302,10 +302,11 @@ int env_select(const char *name);
* @buf: Buffer containing the environment (struct environemnt_s *)
* @check: non-zero to check the CRC at the start of the environment, 0 to
* ignore it
* @flags: Flags controlling matching (H_... - see search.h)
* @return 0 if imported successfully, -ENOMSG if the CRC was bad, -EIO if
* something else went wrong
*/
int env_import(const char *buf, int check);
int env_import(const char *buf, int check, int flags);
/**
* env_export() - Export the environment to a buffer
@ -324,10 +325,12 @@ int env_export(struct environment_s *env_out);
* @buf1_read_fail: 0 if buf1 is valid, non-zero if invalid
* @buf2: Second environment (struct environemnt_s *)
* @buf2_read_fail: 0 if buf2 is valid, non-zero if invalid
* @flags: Flags controlling matching (H_... - see search.h)
* @return 0 if OK, -EIO if no environment is valid, -ENOMSG if the CRC was bad
*/
int env_import_redund(const char *buf1, int buf1_read_fail,
const char *buf2, int buf2_read_fail);
const char *buf2, int buf2_read_fail,
int flags);
/**
* env_get_default() - Look up a variable from the default environment

1
include/search.h
View File

@ -113,5 +113,6 @@ int hwalk_r(struct hsearch_data *htab,
#define H_PROGRAMMATIC (1 << 9) /* indicate that an import is from env_set() */
#define H_ORIGIN_FLAGS (H_INTERACTIVE | H_PROGRAMMATIC)
#define H_DEFAULT (1 << 10) /* indicate that an import is default env */
#define H_EXTERNAL (1 << 11) /* indicate that an import is external env */
#endif /* _SEARCH_H_ */