U-Boot fails to load read-only variables from storage after a reset. It happens because the environment hash table prevents creating read-only variables unless the H_FORCE flag is passed.
In the following example, the variable "test" is set to read-only in the board header file (#define CONFIG_ENV_FLAGS_LIST_DEFAULT "test:sr"):
U-Boot> printenv .flags .flags=test:sr U-Boot> setenv -f test 1 U-Boot> printenv test test=1 U-Boot> savee Saving Environment to SPI Flash ... OK U-Boot> reset ... Loading Environment from SPI Flash... ## Error: Can't create "test" himport_r: can't insert "test=1" into hash table ... U-Boot> printenv test ## Error: "test" not defined
Pass the H_FORCE flag when importing the environment from storage.
Signed-off-by: Yaniv Levinsky yaniv.levinsky@compulab.co.il --- env/common.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/env/common.c b/env/common.c index 3317cef355..de8dd47e9b 100644 --- a/env/common.c +++ b/env/common.c @@ -119,7 +119,7 @@ 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', H_FORCE, 0, 0, NULL)) { gd->flags |= GD_FLG_ENV_READY; return 0;