--- /dev/null
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Implementation of a menu in a scene
+ *
+ * Copyright 2022 Google LLC
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#define LOG_CATEGORY LOGC_BOOT
+
+#include <common.h>
+#include <dm.h>
+#include <expo.h>
+#include <malloc.h>
+#include <mapmem.h>
+#include <menu.h>
+#include <video.h>
+#include <video_console.h>
+#include <linux/input.h>
+#include "scene_internal.h"
+
+static void scene_menuitem_destroy(struct scene_menitem *item)
+{
+ free(item->name);
+ free(item);
+}
+
+void scene_menu_destroy(struct scene_obj_menu *menu)
+{
+ struct scene_menitem *item, *next;
+
+ list_for_each_entry_safe(item, next, &menu->item_head, sibling)
+ scene_menuitem_destroy(item);
+}
+
+/**
+ * menu_point_to_item() - Point to a particular menu item
+ *
+ * Sets the currently pointed-to / highlighted menu item
+ */
+static void menu_point_to_item(struct scene_obj_menu *menu, uint item_id)
+{
+ menu->cur_item_id = item_id;
+}
+
+int scene_menu_arrange(struct scene *scn, struct scene_obj_menu *menu)
+{
+ struct scene_menitem *item;
+ int y, cur_y;
+ int ret;
+
+ y = menu->obj.y;
+ if (menu->title_id) {
+ ret = scene_obj_set_pos(scn, menu->title_id, menu->obj.x, y);
+ if (ret < 0)
+ return log_msg_ret("tit", ret);
+
+ ret = scene_obj_get_hw(scn, menu->title_id, NULL);
+ if (ret < 0)
+ return log_msg_ret("hei", ret);
+
+ y += ret * 2;
+ }
+
+ /*
+ * Currently everything is hard-coded to particular columns so this
+ * won't work on small displays and looks strange if the font size is
+ * small. This can be updated once text measuring is supported in
+ * vidconsole
+ */
+ cur_y = -1;
+ list_for_each_entry(item, &menu->item_head, sibling) {
+ int height;
+
+ ret = scene_obj_get_hw(scn, item->desc_id, NULL);
+ if (ret < 0)
+ return log_msg_ret("get", ret);
+ height = ret;
+
+ if (item->flags & SCENEMIF_GAP_BEFORE)
+ y += height;
+
+ /* select an item if not done already */
+ if (!menu->cur_item_id)
+ menu_point_to_item(menu, item->id);
+
+ /*
+ * Put the label on the left, then leave a space for the
+ * pointer, then the key and the description
+ */
+ if (item->label_id) {
+ ret = scene_obj_set_pos(scn, item->label_id, menu->obj.x,
+ y);
+ if (ret < 0)
+ return log_msg_ret("nam", ret);
+ }
+
+ ret = scene_obj_set_pos(scn, item->key_id, menu->obj.x + 230,
+ y);
+ if (ret < 0)
+ return log_msg_ret("key", ret);
+
+ ret = scene_obj_set_pos(scn, item->desc_id, menu->obj.x + 280,
+ y);
+ if (ret < 0)
+ return log_msg_ret("des", ret);
+
+ if (menu->cur_item_id == item->id)
+ cur_y = y;
+
+ if (item->preview_id) {
+ bool hide;
+
+ /*
+ * put all previews on top of each other, on the right
+ * size of the display
+ */
+ ret = scene_obj_set_pos(scn, item->preview_id, -4, y);
+ if (ret < 0)
+ return log_msg_ret("prev", ret);
+
+ hide = menu->cur_item_id != item->id;
+ ret = scene_obj_set_hide(scn, item->preview_id, hide);
+ if (ret < 0)
+ return log_msg_ret("hid", ret);
+ }
+
+ y += height;
+ }
+
+ if (menu->pointer_id && cur_y != -1) {
+ /*
+ * put the pointer to the right of and level with the item it
+ * points to
+ */
+ ret = scene_obj_set_pos(scn, menu->pointer_id,
+ menu->obj.x + 200, cur_y);
+ if (ret < 0)
+ return log_msg_ret("ptr", ret);
+ }
+
+ return 0;
+}
+
+int scene_menu(struct scene *scn, const char *name, uint id,
+ struct scene_obj_menu **menup)
+{
+ struct scene_obj_menu *menu;
+ int ret;
+
+ ret = scene_obj_add(scn, name, id, SCENEOBJT_MENU,
+ sizeof(struct scene_obj_menu),
+ (struct scene_obj **)&menu);
+ if (ret < 0)
+ return log_msg_ret("obj", -ENOMEM);
+
+ if (menup)
+ *menup = menu;
+ INIT_LIST_HEAD(&menu->item_head);
+
+ ret = scene_menu_arrange(scn, menu);
+ if (ret)
+ return log_msg_ret("pos", ret);
+
+ return menu->obj.id;
+}
+
+static struct scene_menitem *scene_menu_find_key(struct scene *scn,
+ struct scene_obj_menu *menu,
+ int key)
+{
+ struct scene_menitem *item;
+
+ list_for_each_entry(item, &menu->item_head, sibling) {
+ if (item->key_id) {
+ struct scene_obj_txt *txt;
+ const char *str;
+
+ txt = scene_obj_find(scn, item->key_id, SCENEOBJT_TEXT);
+ if (txt) {
+ str = expo_get_str(scn->expo, txt->str_id);
+ if (str && *str == key)
+ return item;
+ }
+ }
+ }
+
+ return NULL;
+}
+
+int scene_menu_send_key(struct scene *scn, struct scene_obj_menu *menu, int key,
+ struct expo_action *event)
+{
+ struct scene_menitem *item, *cur, *key_item;
+
+ cur = NULL;
+ key_item = NULL;
+
+ if (!list_empty(&menu->item_head)) {
+ list_for_each_entry(item, &menu->item_head, sibling) {
+ /* select an item if not done already */
+ if (menu->cur_item_id == item->id) {
+ cur = item;
+ break;
+ }
+ }
+ }
+
+ if (!cur)
+ return -ENOTTY;
+
+ switch (key) {
+ case BKEY_UP:
+ if (item != list_first_entry(&menu->item_head,
+ struct scene_menitem, sibling)) {
+ item = list_entry(item->sibling.prev,
+ struct scene_menitem, sibling);
+ event->type = EXPOACT_POINT;
+ event->select.id = item->id;
+ log_debug("up to item %d\n", event->select.id);
+ }
+ break;
+ case BKEY_DOWN:
+ if (!list_is_last(&item->sibling, &menu->item_head)) {
+ item = list_entry(item->sibling.next,
+ struct scene_menitem, sibling);
+ event->type = EXPOACT_POINT;
+ event->select.id = item->id;
+ log_debug("down to item %d\n", event->select.id);
+ }
+ break;
+ case BKEY_SELECT:
+ event->type = EXPOACT_SELECT;
+ event->select.id = item->id;
+ log_debug("select item %d\n", event->select.id);
+ break;
+ case BKEY_QUIT:
+ event->type = EXPOACT_QUIT;
+ log_debug("quit\n");
+ break;
+ case '0'...'9':
+ key_item = scene_menu_find_key(scn, menu, key);
+ if (key_item) {
+ event->type = EXPOACT_SELECT;
+ event->select.id = key_item->id;
+ }
+ break;
+ }
+
+ menu_point_to_item(menu, item->id);
+
+ return 0;
+}
+
+int scene_menuitem(struct scene *scn, uint menu_id, const char *name, uint id,
+ uint key_id, uint label_id, uint desc_id, uint preview_id,
+ uint flags, struct scene_menitem **itemp)
+{
+ struct scene_obj_menu *menu;
+ struct scene_menitem *item;
+ int ret;
+
+ menu = scene_obj_find(scn, menu_id, SCENEOBJT_MENU);
+ if (!menu)
+ return log_msg_ret("find", -ENOENT);
+
+ /* Check that the text ID is valid */
+ if (!scene_obj_find(scn, desc_id, SCENEOBJT_TEXT))
+ return log_msg_ret("txt", -EINVAL);
+
+ item = calloc(1, sizeof(struct scene_obj_menu));
+ if (!item)
+ return log_msg_ret("item", -ENOMEM);
+ item->name = strdup(name);
+ if (!item->name) {
+ free(item);
+ return log_msg_ret("name", -ENOMEM);
+ }
+
+ item->id = resolve_id(scn->expo, id);
+ item->key_id = key_id;
+ item->label_id = label_id;
+ item->desc_id = desc_id;
+ item->preview_id = preview_id;
+ item->flags = flags;
+ list_add_tail(&item->sibling, &menu->item_head);
+
+ ret = scene_menu_arrange(scn, menu);
+ if (ret)
+ return log_msg_ret("pos", ret);
+
+ if (itemp)
+ *itemp = item;
+
+ return item->id;
+}
+
+int scene_menu_set_title(struct scene *scn, uint id, uint title_id)
+{
+ struct scene_obj_menu *menu;
+ struct scene_obj_txt *txt;
+
+ menu = scene_obj_find(scn, id, SCENEOBJT_MENU);
+ if (!menu)
+ return log_msg_ret("menu", -ENOENT);
+
+ /* Check that the ID is valid */
+ if (title_id) {
+ txt = scene_obj_find(scn, title_id, SCENEOBJT_TEXT);
+ if (!txt)
+ return log_msg_ret("txt", -EINVAL);
+ }
+
+ menu->title_id = title_id;
+
+ return 0;
+}
+
+int scene_menu_set_pointer(struct scene *scn, uint id, uint pointer_id)
+{
+ struct scene_obj_menu *menu;
+ struct scene_obj *obj;
+
+ menu = scene_obj_find(scn, id, SCENEOBJT_MENU);
+ if (!menu)
+ return log_msg_ret("menu", -ENOENT);
+
+ /* Check that the ID is valid */
+ if (pointer_id) {
+ obj = scene_obj_find(scn, pointer_id, SCENEOBJT_NONE);
+ if (!obj)
+ return log_msg_ret("obj", -EINVAL);
+ }
+
+ menu->pointer_id = pointer_id;
+
+ return 0;
+}
+
+int scene_menu_display(struct scene_obj_menu *menu)
+{
+ struct scene *scn = menu->obj.scene;
+ struct scene_obj_txt *pointer;
+ struct expo *exp = scn->expo;
+ struct scene_menitem *item;
+ const char *pstr;
+
+ printf("U-Boot : Boot Menu\n\n");
+ if (menu->title_id) {
+ struct scene_obj_txt *txt;
+ const char *str;
+
+ txt = scene_obj_find(scn, menu->title_id, SCENEOBJT_TEXT);
+ if (!txt)
+ return log_msg_ret("txt", -EINVAL);
+
+ str = expo_get_str(exp, txt->str_id);
+ printf("%s\n\n", str);
+ }
+
+ if (list_empty(&menu->item_head))
+ return 0;
+
+ pointer = scene_obj_find(scn, menu->pointer_id, SCENEOBJT_TEXT);
+ pstr = expo_get_str(scn->expo, pointer->str_id);
+
+ list_for_each_entry(item, &menu->item_head, sibling) {
+ struct scene_obj_txt *key = NULL, *label = NULL;
+ struct scene_obj_txt *desc = NULL;
+ const char *kstr = NULL, *lstr = NULL, *dstr = NULL;
+
+ key = scene_obj_find(scn, item->key_id, SCENEOBJT_TEXT);
+ if (key)
+ kstr = expo_get_str(exp, key->str_id);
+
+ label = scene_obj_find(scn, item->label_id, SCENEOBJT_TEXT);
+ if (label)
+ lstr = expo_get_str(exp, label->str_id);
+
+ desc = scene_obj_find(scn, item->desc_id, SCENEOBJT_TEXT);
+ if (desc)
+ dstr = expo_get_str(exp, desc->str_id);
+
+ printf("%3s %3s %-10s %s\n",
+ pointer && menu->cur_item_id == item->id ? pstr : "",
+ kstr, lstr, dstr);
+ }
+
+ return -ENOTSUPP;
+}
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