expo: cedit: Support reading settings from environment vars

Add a command to read cedit settings from environment variables so that
they can be restored as part of the environment.

Signed-off-by: Simon Glass <[email protected]>

1 files changed, 22 insertions, 0 deletions

diff --git a/cmd/cedit.c b/cmd/cedit.c
index 85629f7b83c..b2548f44b57 100644
--- a/cmd/cedit.c
+++ b/cmd/cedit.c
@@ -156,6 +156,26 @@ static int do_cedit_write_env(struct cmd_tbl *cmdtp, int flag, int argc,
 	return 0;
 }
 
+static int do_cedit_read_env(struct cmd_tbl *cmdtp, int flag, int argc,
+			     char *const argv[])
+{
+	bool verbose;
+	int ret;
+
+	if (check_cur_expo())
+		return CMD_RET_FAILURE;
+
+	verbose = argc > 1 && !strcmp(argv[1], "-v");
+
+	ret = cedit_read_settings_env(cur_exp, verbose);
+	if (ret) {
+		printf("Failed to read settings from environment: %dE\n", ret);
+		return CMD_RET_FAILURE;
+	}
+
+	return 0;
+}
+
 static int do_cedit_run(struct cmd_tbl *cmdtp, int flag, int argc,
 			char *const argv[])
 {
@@ -187,6 +207,7 @@ static char cedit_help_text[] =
 	"load <interface> <dev[:part]> <filename>   - load config editor\n"
 	"cedit read_fdt <i/f> <dev[:part]> <filename>     - read settings\n"
 	"cedit write_fdt <i/f> <dev[:part]> <filename>    - write settings\n"
+	"cedit read_env [-v]                              - read settings from env vars\n"
 	"cedit write_env [-v]                             - write settings to env vars\n"
 	"cedit run                                        - run config editor";
 #endif /* CONFIG_SYS_LONGHELP */
@@ -195,6 +216,7 @@ U_BOOT_CMD_WITH_SUBCMDS(cedit, "Configuration editor", cedit_help_text,
 	U_BOOT_SUBCMD_MKENT(load, 5, 1, do_cedit_load),
 	U_BOOT_SUBCMD_MKENT(read_fdt, 5, 1, do_cedit_read_fdt),
 	U_BOOT_SUBCMD_MKENT(write_fdt, 5, 1, do_cedit_write_fdt),
+	U_BOOT_SUBCMD_MKENT(read_env, 2, 1, do_cedit_read_env),
 	U_BOOT_SUBCMD_MKENT(write_env, 2, 1, do_cedit_write_env),
 	U_BOOT_SUBCMD_MKENT(run, 1, 1, do_cedit_run),
 );