env: Add env_export() wrapper
Implement env_export() wrapper, so that all implementers of saveenv() don't
have to call hexport_r(), crc32() etc. sequence . This trims down a bit of
code duplication.
Signed-off-by: Marek Vasut <marex@denx.de>
diff --git a/common/env_common.c b/common/env_common.c
index c0bfc2f..fe35ff4 100644
--- a/common/env_common.c
+++ b/common/env_common.c
@@ -172,6 +172,23 @@
return 0;
}
+/* Emport the environment and generate CRC for it. */
+int env_export(env_t *env_out)
+{
+ char *res;
+ ssize_t len;
+
+ res = (char *)env_out->data;
+ len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL);
+ if (len < 0) {
+ error("Cannot export environment: errno = %d\n", errno);
+ return 1;
+ }
+ env_out->crc = crc32(0, env_out->data, ENV_SIZE);
+
+ return 0;
+}
+
void env_relocate(void)
{
#if defined(CONFIG_NEEDS_MANUAL_RELOC)