From 2dee81fe5f4a6427ba48fe17ff017930ddf3b4e4 Mon Sep 17 00:00:00 2001
From: Simon Glass <sjg@chromium.org>
Date: Mon, 14 Aug 2023 16:40:33 -0600
Subject: expo: cedit: Support writing settings to a file

Support writing settings from an expo into a file in FDT format. It
consists of a single node with a two properties for each sceneitem,
one with tag ID chosen by the user and another for its text value.

Signed-off-by: Simon Glass <sjg@chromium.org>
---
 cmd/cedit.c | 51 ++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 48 insertions(+), 3 deletions(-)

(limited to 'cmd')

diff --git a/cmd/cedit.c b/cmd/cedit.c
index e98121b067b..18cc8ba191b 100644
--- a/cmd/cedit.c
+++ b/cmd/cedit.c
@@ -7,15 +7,28 @@
  */
 
 #include <common.h>
+#include <abuf.h>
 #include <cedit.h>
 #include <command.h>
 #include <expo.h>
 #include <fs.h>
+#include <malloc.h>
+#include <mapmem.h>
 #include <dm/ofnode.h>
 #include <linux/sizes.h>
 
 struct expo *cur_exp;
 
+static int check_cur_expo(void)
+{
+	if (!cur_exp) {
+		printf("No expo loaded\n");
+		return -ENOENT;
+	}
+
+	return 0;
+}
+
 static int do_cedit_load(struct cmd_tbl *cmdtp, int flag, int argc,
 			 char *const argv[])
 {
@@ -54,16 +67,46 @@ static int do_cedit_load(struct cmd_tbl *cmdtp, int flag, int argc,
 	return 0;
 }
 
+static int do_cedit_write_fdt(struct cmd_tbl *cmdtp, int flag, int argc,
+			      char *const argv[])
+{
+	const char *fname;
+	struct abuf buf;
+	loff_t bytes;
+	int ret;
+
+	if (argc < 4)
+		return CMD_RET_USAGE;
+	fname = argv[3];
+
+	if (check_cur_expo())
+		return CMD_RET_FAILURE;
+
+	ret = cedit_write_settings(cur_exp, &buf);
+	if (ret) {
+		printf("Failed to write settings: %dE\n", ret);
+		return CMD_RET_FAILURE;
+	}
+
+	if (fs_set_blk_dev(argv[1], argv[2], FS_TYPE_ANY))
+		return CMD_RET_FAILURE;
+
+	ret = fs_write(fname, map_to_sysmem(abuf_data(&buf)), 0,
+		       abuf_size(&buf), &bytes);
+	if (ret)
+		return CMD_RET_FAILURE;
+
+	return 0;
+}
+
 static int do_cedit_run(struct cmd_tbl *cmdtp, int flag, int argc,
 			char *const argv[])
 {
 	ofnode node;
 	int ret;
 
-	if (!cur_exp) {
-		printf("No expo loaded\n");
+	if (check_cur_expo())
 		return CMD_RET_FAILURE;
-	}
 
 	node = ofnode_path("/bootstd/cedit-theme");
 	if (ofnode_valid(node)) {
@@ -85,10 +128,12 @@ static int do_cedit_run(struct cmd_tbl *cmdtp, int flag, int argc,
 #ifdef CONFIG_SYS_LONGHELP
 static char cedit_help_text[] =
 	"load <interface> <dev[:part]> <filename>   - load config editor\n"
+	"cedit write_fdt <i/f> <dev[:part]> <filename>    - write settings\n"
 	"cedit run                                        - run config editor";
 #endif /* CONFIG_SYS_LONGHELP */
 
 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(write_fdt, 5, 1, do_cedit_write_fdt),
 	U_BOOT_SUBCMD_MKENT(run, 1, 1, do_cedit_run),
 );
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