3 files changed, 142 insertions, 25 deletions
diff --git a/include/abuf.h b/include/abuf.h
index 9badda64e4f..be98ec78c86 100644
--- a/include/abuf.h
+++ b/include/abuf.h
@@ -91,6 +91,15 @@ void abuf_map_sysmem(struct abuf *abuf, ulong addr, size_t size);
 bool abuf_realloc(struct abuf *abuf, size_t new_size);
 
 /**
+ * abuf_realloc_inc() - Increment abuf size by a given amount
+ *
+ * @abuf: abuf to adjust
+ * @inc: Size incrmement to use (the buffer size will be increased by this much)
+ * Return: true if OK, false if out of memory
+ */
+bool abuf_realloc_inc(struct abuf *abuf, size_t inc);
+
+/**
  * abuf_uninit_move() - Return the allocated contents and uninit the abuf
  *
  * This returns the abuf data to the caller, allocating it if necessary, so that
diff --git a/include/cedit.h b/include/cedit.h
new file mode 100644
index 00000000000..f43cafa5aa2
--- /dev/null
+++ b/include/cedit.h
@@ -0,0 +1,125 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2023 Google LLC
+ * Written by Simon Glass <[email protected]>
+ */
+
+#ifndef __CEDIT_H
+#define __CEDIT_H
+
+#include <dm/ofnode_decl.h>
+
+struct abuf;
+struct expo;
+struct scene;
+struct video_priv;
+
+enum {
+	/* size increment for writing FDT */
+	CEDIT_SIZE_INC	= 1024,
+};
+
+/* Name of the cedit node in the devicetree */
+#define CEDIT_NODE_NAME		"cedit-values"
+
+extern struct expo *cur_exp;
+
+/**
+ * cedit_arange() - Arrange objects in a configuration-editor scene
+ *
+ * @exp: Expo to update
+ * @vid_priv: Private info of the video device
+ * @scene_id: scene ID to arrange
+ * Returns: 0 if OK, -ve on error
+ */
+int cedit_arange(struct expo *exp, struct video_priv *vid_priv, uint scene_id);
+
+/**
+ * cedit_run() - Run a configuration editor
+ *
+ * This accepts input until the user quits with Escape
+ *
+ * @exp: Expo to use
+ * Returns: 0 if OK, -ve on error
+ */
+int cedit_run(struct expo *exp);
+
+/**
+ * cedit_prepare() - Prepare to run a cedit
+ *
+ * Set up the video device, select the first scene and highlight the first item.
+ * This ensures that all menus have a selected item.
+ *
+ * @exp: Expo to use
+ * @vid_privp: Set to private data for the video device
+ * @scnp: Set to the first scene
+ * Return: scene ID of first scene if OK, -ve on error
+ */
+int cedit_prepare(struct expo *exp, struct video_priv **vid_privp,
+		  struct scene **scnp);
+
+/**
+ * cedit_write_settings() - Write settings in FDT format
+ *
+ * Sets up an FDT with the settings
+ *
+ * @exp: Expo to write settings from
+ * @buf: Returns abuf containing the settings FDT (inited by this function)
+ * Return: 0 if OK, -ve on error
+ */
+int cedit_write_settings(struct expo *exp, struct abuf *buf);
+
+/**
+ * cedit_read_settings() - Read settings in FDT format
+ *
+ * Read an FDT with the settings
+ *
+ * @exp: Expo to read settings into
+ * @tree: Tree to read from
+ * Return: 0 if OK, -ve on error
+ */
+int cedit_read_settings(struct expo *exp, oftree tree);
+
+/**
+ * cedit_write_settings_env() - Write settings to envrionment variables
+ *
+ * @exp: Expo to write settings from
+ * @verbose: true to print each var as it is set
+ * Return: 0 if OK, -ve on error
+ */
+int cedit_write_settings_env(struct expo *exp, bool verbose);
+
+/*
+ * cedit_read_settings_env() - Read settings from the environment
+ *
+ * @exp: Expo to read settings into
+ * @verbose: true to print each var before it is read
+ */
+int cedit_read_settings_env(struct expo *exp, bool verbose);
+
+/**
+ * cedit_write_settings_cmos() - Write settings to CMOS RAM
+ *
+ * Write settings to the defined places in CMOS RAM
+ *
+ * @exp: Expo to write settings from
+ * @dev: UCLASS_RTC device containing space for this information
+ * Returns 0 if OK, -ve on error
+ * @verbose: true to print a summary at the end
+ */
+int cedit_write_settings_cmos(struct expo *exp, struct udevice *dev,
+			      bool verbose);
+
+/**
+ * cedit_read_settings_cmos() - Read settings from CMOS RAM
+ *
+ * Read settings from the defined places in CMO RAM
+ *
+ * @exp: Expo to read settings into
+ * @dev: RTC device to read settings from
+ * @verbose: true to print a summary at the end
+ */
+int cedit_read_settings_cmos(struct expo *exp, struct udevice *dev,
+			     bool verbose);
+
+#endif /* __CEDIT_H */
diff --git a/include/expo.h b/include/expo.h
index 0b1d944a169..a2b3a71c159 100644
--- a/include/expo.h
+++ b/include/expo.h
@@ -4,14 +4,13 @@
  * Written by Simon Glass <[email protected]>
  */
 
-#ifndef __SCENE_H
-#define __SCENE_H
+#ifndef __EXPO_H
+#define __EXPO_H
 
 #include <dm/ofnode_decl.h>
 #include <linux/list.h>
 
 struct udevice;
-struct video_priv;
 
 /**
  * enum expoact_type - types of actions reported by the expo
@@ -188,6 +187,8 @@ enum scene_obj_flags_t {
  * @type: Type of this object
  * @dim: Dimensions for this object
  * @flags: Flags for this object
+ * @bit_length: Number of bits used for this object in CMOS RAM
+ * @start_bit: Start bit to use for this object in CMOS RAM
  * @sibling: Node to link this object to its siblings
  */
 struct scene_obj {
@@ -196,7 +197,9 @@ struct scene_obj {
 	uint id;
 	enum scene_obj_t type;
 	struct scene_dim dim;
-	int flags;
+	u8 flags;
+	u8 bit_length;
+	u16 start_bit;
 	struct list_head sibling;
 };
 
@@ -676,24 +679,4 @@ int expo_apply_theme(struct expo *exp, ofnode node);
  */
 int expo_build(ofnode root, struct expo **expp);
 
-/**
- * cedit_arange() - Arrange objects in a configuration-editor scene
- *
- * @exp: Expo to update
- * @vid_priv: Private info of the video device
- * @scene_id: scene ID to arrange
- * Returns: 0 if OK, -ve on error
- */
-int cedit_arange(struct expo *exp, struct video_priv *vid_priv, uint scene_id);
-
-/**
- * cedit_run() - Run a configuration editor
- *
- * This accepts input until the user quits with Escape
- *
- * @exp: Expo to use
- * Returns: 0 if OK, -ve on error
- */
-int cedit_run(struct expo *exp);
-
-#endif /*__SCENE_H */
+#endif /*__EXPO_H */