expo: Add a configuration editor

Add a new 'cedit' command which allows editing configuration using an
expo. The configuration items appear as menus on the display.

This is extremely basic, only supporting menus and not providing any way
to load or save the configuration.

Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 163 insertions, 0 deletions

diff --git a/boot/cedit.c b/boot/cedit.c
new file mode 100644
index 0000000000..ee24658917
--- /dev/null
+++ b/boot/cedit.c
@@ -0,0 +1,163 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Implementation of configuration editor
+ *
+ * Copyright 2023 Google LLC
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#include <common.h>
+#include <cli.h>
+#include <dm.h>
+#include <expo.h>
+#include <menu.h>
+#include <video.h>
+#include <linux/delay.h>
+#include "scene_internal.h"
+
+int cedit_arange(struct expo *exp, struct video_priv *vpriv, uint scene_id)
+{
+	struct scene_obj_txt *txt;
+	struct scene_obj *obj;
+	struct scene *scn;
+	int y;
+
+	scn = expo_lookup_scene_id(exp, scene_id);
+	if (!scn)
+		return log_msg_ret("scn", -ENOENT);
+
+	txt = scene_obj_find_by_name(scn, "prompt");
+	if (txt)
+		scene_obj_set_pos(scn, txt->obj.id, 0, vpriv->ysize - 50);
+
+	txt = scene_obj_find_by_name(scn, "title");
+	if (txt)
+		scene_obj_set_pos(scn, txt->obj.id, 200, 10);
+
+	y = 100;
+	list_for_each_entry(obj, &scn->obj_head, sibling) {
+		if (obj->type == SCENEOBJT_MENU) {
+			scene_obj_set_pos(scn, obj->id, 50, y);
+			scene_menu_arrange(scn, (struct scene_obj_menu *)obj);
+			y += 50;
+		}
+	}
+
+	return 0;
+}
+
+int cedit_run(struct expo *exp)
+{
+	struct cli_ch_state s_cch, *cch = &s_cch;
+	struct video_priv *vid_priv;
+	uint scene_id;
+	struct udevice *dev;
+	struct scene *scn;
+	bool done;
+	int ret;
+
+	cli_ch_init(cch);
+
+	/* For now we only support a video console */
+	ret = uclass_first_device_err(UCLASS_VIDEO, &dev);
+	if (ret)
+		return log_msg_ret("vid", ret);
+	ret = expo_set_display(exp, dev);
+	if (ret)
+		return log_msg_ret("dis", ret);
+
+	ret = expo_first_scene_id(exp);
+	if (ret < 0)
+		return log_msg_ret("scn", ret);
+	scene_id = ret;
+
+	ret = expo_set_scene_id(exp, scene_id);
+	if (ret)
+		return log_msg_ret("sid", ret);
+
+	exp->popup = true;
+
+	/* This is not supported for now */
+	if (0)
+		expo_set_text_mode(exp, true);
+
+	vid_priv = dev_get_uclass_priv(dev);
+
+	scn = expo_lookup_scene_id(exp, scene_id);
+	scene_highlight_first(scn);
+
+	cedit_arange(exp, vid_priv, scene_id);
+
+	ret = expo_calc_dims(exp);
+	if (ret)
+		return log_msg_ret("dim", ret);
+
+	done = false;
+	do {
+		struct expo_action act;
+		int ichar, key;
+
+		ret = expo_render(exp);
+		if (ret)
+			break;
+
+		ichar = cli_ch_process(cch, 0);
+		if (!ichar) {
+			while (!ichar && !tstc()) {
+				schedule();
+				mdelay(2);
+				ichar = cli_ch_process(cch, -ETIMEDOUT);
+			}
+			if (!ichar) {
+				ichar = getchar();
+				ichar = cli_ch_process(cch, ichar);
+			}
+		}
+
+		key = 0;
+		if (ichar) {
+			key = bootmenu_conv_key(ichar);
+			if (key == BKEY_NONE)
+				key = ichar;
+		}
+		if (!key)
+			continue;
+
+		ret = expo_send_key(exp, key);
+		if (ret)
+			break;
+
+		ret = expo_action_get(exp, &act);
+		if (!ret) {
+			switch (act.type) {
+			case EXPOACT_POINT_OBJ:
+				scene_set_highlight_id(scn, act.select.id);
+				cedit_arange(exp, vid_priv, scene_id);
+				break;
+			case EXPOACT_OPEN:
+				scene_set_open(scn, act.select.id, true);
+				cedit_arange(exp, vid_priv, scene_id);
+				break;
+			case EXPOACT_CLOSE:
+				scene_set_open(scn, act.select.id, false);
+				cedit_arange(exp, vid_priv, scene_id);
+				break;
+			case EXPOACT_SELECT:
+				scene_set_open(scn, scn->highlight_id, false);
+				cedit_arange(exp, vid_priv, scene_id);
+				break;
+			case EXPOACT_QUIT:
+				log_debug("quitting\n");
+				done = true;
+				break;
+			default:
+				break;
+			}
+		}
+	} while (!done);
+
+	if (ret)
+		return log_msg_ret("end", ret);
+
+	return 0;
+}