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env: Discern environment coming from external storage

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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
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7
include/env.h
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@@ -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