dfu: Extract common DFU code to handle "dfu_alt_info" environment variable

New dfu_init_env_entities() function has been extracted from cmd_dfu.c and
stored at dfu core.

This is a dfu centric code, so it shall be processed in the core.

Change-Id: I756c5de922fa31399d8804eaadc004ee98844ec2
Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Tested-by: Heiko Schocher <hs@denx.de>

1 files changed, 23 insertions, 0 deletions

diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c
index 2f1e2af..689f5db 100644
--- a/drivers/dfu/dfu.c
+++ b/drivers/dfu/dfu.c
@@ -41,6 +41,29 @@ static int dfu_find_alt_num(const char *s)
 	return ++i;
 }
 
+int dfu_init_env_entities(char *interface, int dev)
+{
+	const char *str_env;
+	char *env_bkp;
+	int ret;
+
+	str_env = getenv("dfu_alt_info");
+	if (!str_env) {
+		error("\"dfu_alt_info\" env variable not defined!\n");
+		return -EINVAL;
+	}
+
+	env_bkp = strdup(str_env);
+	ret = dfu_config_entities(env_bkp, interface, dev);
+	if (ret) {
+		error("DFU entities configuration failed!\n");
+		return ret;
+	}
+
+	free(env_bkp);
+	return 0;
+}
+
 static unsigned char *dfu_buf;
 static unsigned long dfu_buf_size = CONFIG_SYS_DFU_DATA_BUF_SIZE;