[thirdparty/u-boot.git] / boot / cedit.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Implementation of configuration editor
 *
 * Copyright 2023 Google LLC
 * Written by Simon Glass <sjg@chromium.org>
 */

#define LOG_CATEGORY LOGC_EXPO

#include <common.h>
#include <abuf.h>
#include <cedit.h>
#include <cli.h>
#include <dm.h>
#include <env.h>
#include <expo.h>
#include <malloc.h>
#include <menu.h>
#include <rtc.h>
#include <video.h>
#include <linux/delay.h>
#include "scene_internal.h"

enum {
	CMOS_MAX_BITS	= 2048,
	CMOS_MAX_BYTES	= CMOS_MAX_BITS / 8,
};

#define CMOS_BYTE(bit)	((bit) / 8)
#define CMOS_BIT(bit)	((bit) % 8)

/**
 * struct cedit_iter_priv - private data for cedit operations
 *
 * @buf: Buffer to use when writing settings to the devicetree
 * @node: Node to read from when reading settings from devicetree
 * @verbose: true to show writing to environment variables
 * @mask: Mask bits for the CMOS RAM. If a bit is set the byte containing it
 * will be written
 * @value: Value bits for CMOS RAM. This is the actual value written
 * @dev: RTC device to write to
 */
struct cedit_iter_priv {
	struct abuf *buf;
	ofnode node;
	bool verbose;
	u8 *mask;
	u8 *value;
	struct udevice *dev;
};

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) {
		switch (obj->type) {
		case SCENEOBJT_NONE:
		case SCENEOBJT_IMAGE:
		case SCENEOBJT_TEXT:
			break;
		case SCENEOBJT_MENU:
			scene_obj_set_pos(scn, obj->id, 50, y);
			scene_menu_arrange(scn, (struct scene_obj_menu *)obj);
			y += 50;
			break;
		case SCENEOBJT_TEXTLINE:
			scene_obj_set_pos(scn, obj->id, 50, y);
			scene_textline_arrange(scn,
					(struct scene_obj_textline *)obj);
			y += 50;
			break;
		}
	}

	return 0;
}

int cedit_prepare(struct expo *exp, struct video_priv **vid_privp,
		  struct scene **scnp)
{
	struct video_priv *vid_priv;
	struct udevice *dev;
	struct scene *scn;
	uint scene_id;
	int ret;

	/* 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);

	*vid_privp = vid_priv;
	*scnp = scn;

	return scene_id;
}

int cedit_run(struct expo *exp)
{
	struct cli_ch_state s_cch, *cch = &s_cch;
	struct video_priv *vid_priv;
	uint scene_id;
	struct scene *scn;
	bool done;
	int ret;

	cli_ch_init(cch);
	ret = cedit_prepare(exp, &vid_priv, &scn);
	if (ret < 0)
		return log_msg_ret("prep", ret);
	scene_id = 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 >= BKEY_FIRST_EXTRA)
				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;
}

static int check_space(int ret, struct abuf *buf)
{
	if (ret == -FDT_ERR_NOSPACE) {
		if (!abuf_realloc_inc(buf, CEDIT_SIZE_INC))
			return log_msg_ret("spc", -ENOMEM);
		ret = fdt_resize(abuf_data(buf), abuf_data(buf),
				 abuf_size(buf));
		if (ret)
			return log_msg_ret("res", -EFAULT);
	}

	return 0;
}

/**
 * get_cur_menuitem_text() - Get the text of the currently selected item
 *
 * Looks up the object for the current item, finds text object for it and looks
 * up the string for that text
 *
 * @menu: Menu to look at
 * @strp: Returns a pointer to the next
 * Return: 0 if OK, -ENOENT if something was not found
 */
static int get_cur_menuitem_text(const struct scene_obj_menu *menu,
				 const char **strp)
{
	struct scene *scn = menu->obj.scene;
	const struct scene_menitem *mi;
	const struct scene_obj_txt *txt;
	const char *str;

	mi = scene_menuitem_find(menu, menu->cur_item_id);
	if (!mi)
		return log_msg_ret("mi", -ENOENT);

	txt = scene_obj_find(scn, mi->label_id, SCENEOBJT_TEXT);
	if (!txt)
		return log_msg_ret("txt", -ENOENT);

	str = expo_get_str(scn->expo, txt->str_id);
	if (!str)
		return log_msg_ret("str", -ENOENT);
	*strp = str;

	return 0;
}

static int write_dt_string(struct abuf *buf, const char *name, const char *str)
{
	int ret, i;

	/* write the text of the current item */
	ret = -EAGAIN;
	for (i = 0; ret && i < 2; i++) {
		ret = fdt_property_string(abuf_data(buf), name, str);
		if (!i) {
			ret = check_space(ret, buf);
			if (ret)
				return log_msg_ret("rs2", -ENOMEM);
		}
	}

	/* this should not happen */
	if (ret)
		return log_msg_ret("str", -EFAULT);

	return 0;
}

static int h_write_settings(struct scene_obj *obj, void *vpriv)
{
	struct cedit_iter_priv *priv = vpriv;
	struct abuf *buf = priv->buf;
	int ret;

	switch (obj->type) {
	case SCENEOBJT_NONE:
	case SCENEOBJT_IMAGE:
	case SCENEOBJT_TEXT:
		break;
	case SCENEOBJT_TEXTLINE: {
		const struct scene_obj_textline *tline;

		tline = (struct scene_obj_textline *)obj;
		ret = write_dt_string(buf, obj->name, abuf_data(&tline->buf));
		if (ret)
			return log_msg_ret("wr2", ret);
		break;
	}
	case SCENEOBJT_MENU: {
		const struct scene_obj_menu *menu;
		const char *str;
		char name[80];
		int i;

		/* write the ID of the current item */
		menu = (struct scene_obj_menu *)obj;
		ret = -EAGAIN;
		for (i = 0; ret && i < 2; i++) {
			ret = fdt_property_u32(abuf_data(buf), obj->name,
					       menu->cur_item_id);
			if (!i) {
				ret = check_space(ret, buf);
				if (ret)
					return log_msg_ret("res", -ENOMEM);
			}
		}
		/* this should not happen */
		if (ret)
			return log_msg_ret("wrt", -EFAULT);

		ret = get_cur_menuitem_text(menu, &str);
		if (ret)
			return log_msg_ret("mis", ret);

		/* write the text of the current item */
		snprintf(name, sizeof(name), "%s-str", obj->name);
		ret = write_dt_string(buf, name, str);
		if (ret)
			return log_msg_ret("wr2", ret);

		break;
	}
	}

	return 0;
}

int cedit_write_settings(struct expo *exp, struct abuf *buf)
{
	struct cedit_iter_priv priv;
	void *fdt;
	int ret;

	abuf_init(buf);
	if (!abuf_realloc(buf, CEDIT_SIZE_INC))
		return log_msg_ret("buf", -ENOMEM);

	fdt = abuf_data(buf);
	ret = fdt_create(fdt, abuf_size(buf));
	if (!ret)
		ret = fdt_finish_reservemap(fdt);
	if (!ret)
		ret = fdt_begin_node(fdt, "");
	if (!ret)
		ret = fdt_begin_node(fdt, CEDIT_NODE_NAME);
	if (ret) {
		log_debug("Failed to start FDT (err=%d)\n", ret);
		return log_msg_ret("sta", -EINVAL);
	}

	/* write out the items */
	priv.buf = buf;
	ret = expo_iter_scene_objs(exp, h_write_settings, &priv);
	if (ret) {
		log_debug("Failed to write settings (err=%d)\n", ret);
		return log_msg_ret("set", ret);
	}

	ret = fdt_end_node(fdt);
	if (!ret)
		ret = fdt_end_node(fdt);
	if (!ret)
		ret = fdt_finish(fdt);
	if (ret) {
		log_debug("Failed to finish FDT (err=%d)\n", ret);
		return log_msg_ret("fin", -EINVAL);
	}

	return 0;
}

static int h_read_settings(struct scene_obj *obj, void *vpriv)
{
	struct cedit_iter_priv *priv = vpriv;
	ofnode node = priv->node;

	switch (obj->type) {
	case SCENEOBJT_NONE:
	case SCENEOBJT_IMAGE:
	case SCENEOBJT_TEXT:
		break;
	case SCENEOBJT_TEXTLINE: {
		const struct scene_obj_textline *tline;
		const char *val;
		int len;

		tline = (struct scene_obj_textline *)obj;

		val = ofnode_read_prop(node, obj->name, &len);
		if (len >= tline->max_chars)
			return log_msg_ret("str", -ENOSPC);
		strcpy(abuf_data(&tline->buf), val);
		break;
	}
	case SCENEOBJT_MENU: {
		struct scene_obj_menu *menu;
		uint val;

		if (ofnode_read_u32(node, obj->name, &val))
			return log_msg_ret("rd", -ENOENT);
		menu = (struct scene_obj_menu *)obj;
		menu->cur_item_id = val;

		break;
	}
	}

	return 0;
}

int cedit_read_settings(struct expo *exp, oftree tree)
{
	struct cedit_iter_priv priv;
	ofnode root, node;
	int ret;

	root = oftree_root(tree);
	if (!ofnode_valid(root))
		return log_msg_ret("roo", -ENOENT);
	node = ofnode_find_subnode(root, CEDIT_NODE_NAME);
	if (!ofnode_valid(node))
		return log_msg_ret("pat", -ENOENT);

	/* read in the items */
	priv.node = node;
	ret = expo_iter_scene_objs(exp, h_read_settings, &priv);
	if (ret) {
		log_debug("Failed to read settings (err=%d)\n", ret);
		return log_msg_ret("set", ret);
	}

	return 0;
}

static int h_write_settings_env(struct scene_obj *obj, void *vpriv)
{
	const struct scene_obj_menu *menu;
	struct cedit_iter_priv *priv = vpriv;
	char name[80], var[60];
	const char *str;
	int val, ret;

	snprintf(var, sizeof(var), "c.%s", obj->name);

	switch (obj->type) {
	case SCENEOBJT_NONE:
	case SCENEOBJT_IMAGE:
	case SCENEOBJT_TEXT:
		break;
	case SCENEOBJT_MENU:
		menu = (struct scene_obj_menu *)obj;
		val = menu->cur_item_id;

		if (priv->verbose)
			printf("%s=%d\n", var, val);

		ret = env_set_ulong(var, val);
		if (ret)
			return log_msg_ret("set", ret);

		ret = get_cur_menuitem_text(menu, &str);
		if (ret)
			return log_msg_ret("mis", ret);

		snprintf(name, sizeof(name), "c.%s-str", obj->name);
		if (priv->verbose)
			printf("%s=%s\n", name, str);

		ret = env_set(name, str);
		if (ret)
			return log_msg_ret("st2", ret);
		break;
	case SCENEOBJT_TEXTLINE: {
		const struct scene_obj_textline *tline;

		tline = (struct scene_obj_textline *)obj;
		str = abuf_data(&tline->buf);
		ret = env_set(var, str);
		if (ret)
			return log_msg_ret("set", ret);

		if (priv->verbose)
			printf("%s=%s\n", var, str);

		break;
	}
	}

	return 0;
}

int cedit_write_settings_env(struct expo *exp, bool verbose)
{
	struct cedit_iter_priv priv;
	int ret;

	/* write out the items */
	priv.verbose = verbose;
	ret = expo_iter_scene_objs(exp, h_write_settings_env, &priv);
	if (ret) {
		log_debug("Failed to write settings to env (err=%d)\n", ret);
		return log_msg_ret("set", ret);
	}

	return 0;
}

static int h_read_settings_env(struct scene_obj *obj, void *vpriv)
{
	struct cedit_iter_priv *priv = vpriv;
	struct scene_obj_menu *menu;
	char var[60];
	int val;

	snprintf(var, sizeof(var), "c.%s", obj->name);

	switch (obj->type) {
	case SCENEOBJT_NONE:
	case SCENEOBJT_IMAGE:
	case SCENEOBJT_TEXT:
		break;
	case SCENEOBJT_MENU:
		menu = (struct scene_obj_menu *)obj;
		val = env_get_ulong(var, 10, 0);
		if (priv->verbose)
			printf("%s=%d\n", var, val);
		if (!val)
			return log_msg_ret("get", -ENOENT);

		/*
		 * note that no validation is done here, to make sure the ID is
		 * valid * and actually points to a menu item
		 */
		menu->cur_item_id = val;
		break;
	case SCENEOBJT_TEXTLINE: {
		const struct scene_obj_textline *tline;
		const char *value;

		tline = (struct scene_obj_textline *)obj;
		value = env_get(var);
		if (value && strlen(value) >= tline->max_chars)
			return log_msg_ret("str", -ENOSPC);
		if (!value)
			value = "";
		if (priv->verbose)
			printf("%s=%s\n", var, value);
		strcpy(abuf_data(&tline->buf), value);
		break;
	}
	}

	return 0;
}

int cedit_read_settings_env(struct expo *exp, bool verbose)
{
	struct cedit_iter_priv priv;
	int ret;

	/* write out the items */
	priv.verbose = verbose;
	ret = expo_iter_scene_objs(exp, h_read_settings_env, &priv);
	if (ret) {
		log_debug("Failed to read settings from env (err=%d)\n", ret);
		return log_msg_ret("set", ret);
	}

	return 0;
}

/**
 * get_cur_menuitem_seq() - Get the sequence number of a menu's current item
 *
 * Enumerates the items of a menu (0, 1, 2) and returns the sequence number of
 * the currently selected item. If the first item is selected, this returns 0;
 * if the second, 1; etc.
 *
 * @menu: Menu to check
 * Return: Sequence number on success, else -ve error value
 */
static int get_cur_menuitem_seq(const struct scene_obj_menu *menu)
{
	const struct scene_menitem *mi;
	int seq, found;

	seq = 0;
	found = -1;
	list_for_each_entry(mi, &menu->item_head, sibling) {
		if (mi->id == menu->cur_item_id) {
			found = seq;
			break;
		}
		seq++;
	}

	if (found == -1)
		return log_msg_ret("nf", -ENOENT);

	return found;
}

static int h_write_settings_cmos(struct scene_obj *obj, void *vpriv)
{
	const struct scene_obj_menu *menu;
	struct cedit_iter_priv *priv = vpriv;
	int val, ret;
	uint i, seq;

	if (obj->type != SCENEOBJT_MENU)
		return 0;

	menu = (struct scene_obj_menu *)obj;
	val = menu->cur_item_id;

	ret = get_cur_menuitem_seq(menu);
	if (ret < 0)
		return log_msg_ret("cur", ret);
	seq = ret;
	log_debug("%s: seq=%d\n", menu->obj.name, seq);

	/* figure out where to place this item */
	if (!obj->bit_length)
		return log_msg_ret("len", -EINVAL);
	if (obj->start_bit + obj->bit_length > CMOS_MAX_BITS)
		return log_msg_ret("bit", -E2BIG);

	for (i = 0; i < obj->bit_length; i++, seq >>= 1) {
		uint bitnum = obj->start_bit + i;

		priv->mask[CMOS_BYTE(bitnum)] |= 1 << CMOS_BIT(bitnum);
		if (seq & 1)
			priv->value[CMOS_BYTE(bitnum)] |= BIT(CMOS_BIT(bitnum));
		log_debug("bit %x %x %x\n", bitnum,
			  priv->mask[CMOS_BYTE(bitnum)],
			  priv->value[CMOS_BYTE(bitnum)]);
	}

	return 0;
}

int cedit_write_settings_cmos(struct expo *exp, struct udevice *dev,
			      bool verbose)
{
	struct cedit_iter_priv priv;
	int ret, i, count, first, last;

	/* write out the items */
	priv.mask = calloc(1, CMOS_MAX_BYTES);
	if (!priv.mask)
		return log_msg_ret("mas", -ENOMEM);
	priv.value = calloc(1, CMOS_MAX_BYTES);
	if (!priv.value) {
		free(priv.mask);
		return log_msg_ret("val", -ENOMEM);
	}

	ret = expo_iter_scene_objs(exp, h_write_settings_cmos, &priv);
	if (ret) {
		log_debug("Failed to write CMOS (err=%d)\n", ret);
		ret = log_msg_ret("set", ret);
		goto done;
	}

	/* write the data to the RTC */
	first = CMOS_MAX_BYTES;
	last = -1;
	for (i = 0, count = 0; i < CMOS_MAX_BYTES; i++) {
		if (priv.mask[i]) {
			log_debug("Write byte %x: %x\n", i, priv.value[i]);
			ret = rtc_write8(dev, i, priv.value[i]);
			if (ret) {
				ret = log_msg_ret("wri", ret);
				goto done;
			}
			count++;
			first = min(first, i);
			last = max(last, i);
		}
	}
	if (verbose) {
		printf("Write %d bytes from offset %x to %x\n", count, first,
		       last);
	}

done:
	free(priv.mask);
	free(priv.value);
	return ret;
}

static int h_read_settings_cmos(struct scene_obj *obj, void *vpriv)
{
	struct cedit_iter_priv *priv = vpriv;
	const struct scene_menitem *mi;
	struct scene_obj_menu *menu;
	int val, ret;
	uint i;

	if (obj->type != SCENEOBJT_MENU)
		return 0;

	menu = (struct scene_obj_menu *)obj;

	/* figure out where to place this item */
	if (!obj->bit_length)
		return log_msg_ret("len", -EINVAL);
	if (obj->start_bit + obj->bit_length > CMOS_MAX_BITS)
		return log_msg_ret("bit", -E2BIG);

	val = 0;
	for (i = 0; i < obj->bit_length; i++) {
		uint bitnum = obj->start_bit + i;
		uint offset = CMOS_BYTE(bitnum);

		/* read the byte if not already read */
		if (!priv->mask[offset]) {
			ret = rtc_read8(priv->dev, offset);
			if (ret < 0)
				return  log_msg_ret("rea", ret);
			priv->value[offset] = ret;

			/* mark it as read */
			priv->mask[offset] = 0xff;
		}

		if (priv->value[offset] & BIT(CMOS_BIT(bitnum)))
			val |= BIT(i);
		log_debug("bit %x %x\n", bitnum, val);
	}

	/* update the current item */
	mi = scene_menuitem_find_seq(menu, val);
	if (!mi)
		return log_msg_ret("seq", -ENOENT);

	menu->cur_item_id = mi->id;
	log_debug("Update menu %d cur_item_id %d\n", menu->obj.id, mi->id);

	return 0;
}

int cedit_read_settings_cmos(struct expo *exp, struct udevice *dev,
			     bool verbose)
{
	struct cedit_iter_priv priv;
	int ret, i, count, first, last;

	/* read in the items */
	priv.mask = calloc(1, CMOS_MAX_BYTES);
	if (!priv.mask)
		return log_msg_ret("mas", -ENOMEM);
	priv.value = calloc(1, CMOS_MAX_BYTES);
	if (!priv.value) {
		free(priv.mask);
		return log_msg_ret("val", -ENOMEM);
	}
	priv.dev = dev;

	ret = expo_iter_scene_objs(exp, h_read_settings_cmos, &priv);
	if (ret) {
		log_debug("Failed to read CMOS (err=%d)\n", ret);
		ret = log_msg_ret("set", ret);
		goto done;
	}

	/* read the data to the RTC */
	first = CMOS_MAX_BYTES;
	last = -1;
	for (i = 0, count = 0; i < CMOS_MAX_BYTES; i++) {
		if (priv.mask[i]) {
			log_debug("Read byte %x: %x\n", i, priv.value[i]);
			count++;
			first = min(first, i);
			last = max(last, i);
		}
	}
	if (verbose) {
		printf("Read %d bytes from offset %x to %x\n", count, first,
		       last);
	}

done:
	free(priv.mask);
	free(priv.value);
	return ret;
}
Commit	Line	Data
a0874dc4 SG	1	// SPDX-License-Identifier: GPL-2.0+
	2	/*
	3	* Implementation of configuration editor
	4	*
	5	* Copyright 2023 Google LLC
	6	* Written by Simon Glass <sjg@chromium.org>
	7	*/
	8
8d0f890a SG	9	#define LOG_CATEGORY LOGC_EXPO
8d0f890a SG	10
d678a59d	11	#include <common.h>
2dee81fe	12	#include <abuf.h>
040b0468	13	#include <cedit.h>
a0874dc4 SG	14	#include <cli.h>
a0874dc4 SG	15	#include <dm.h>
fc9c0e07	16	#include <env.h>
a0874dc4	17	#include <expo.h>
eb6c71b5	18	#include <malloc.h>
a0874dc4	19	#include <menu.h>
eb6c71b5	20	#include <rtc.h>
a0874dc4 SG	21	#include <video.h>
	22	#include <linux/delay.h>
	23	#include "scene_internal.h"
	24
eb6c71b5 SG	25	enum {
	26	CMOS_MAX_BITS = 2048,
	27	CMOS_MAX_BYTES = CMOS_MAX_BITS / 8,
	28	};
	29
	30	#define CMOS_BYTE(bit) ((bit) / 8)
	31	#define CMOS_BIT(bit) ((bit) % 8)
	32
2dee81fe SG	33	/**
	34	* struct cedit_iter_priv - private data for cedit operations
	35	*
	36	* @buf: Buffer to use when writing settings to the devicetree
472317cb	37	* @node: Node to read from when reading settings from devicetree
fc9c0e07	38	* @verbose: true to show writing to environment variables
eb6c71b5 SG	39	* @mask: Mask bits for the CMOS RAM. If a bit is set the byte containing it
	40	* will be written
	41	* @value: Value bits for CMOS RAM. This is the actual value written
cfc402db	42	* @dev: RTC device to write to
2dee81fe SG	43	*/
	44	struct cedit_iter_priv {
	45	struct abuf *buf;
472317cb	46	ofnode node;
fc9c0e07	47	bool verbose;
eb6c71b5 SG	48	u8 *mask;
eb6c71b5 SG	49	u8 *value;
cfc402db	50	struct udevice *dev;
2dee81fe SG	51	};
2dee81fe SG	52
a0874dc4 SG	53	int cedit_arange(struct expo exp, struct video_priv vpriv, uint scene_id)
	54	{
	55	struct scene_obj_txt *txt;
	56	struct scene_obj *obj;
	57	struct scene *scn;
	58	int y;
	59
	60	scn = expo_lookup_scene_id(exp, scene_id);
	61	if (!scn)
	62	return log_msg_ret("scn", -ENOENT);
	63
	64	txt = scene_obj_find_by_name(scn, "prompt");
	65	if (txt)
	66	scene_obj_set_pos(scn, txt->obj.id, 0, vpriv->ysize - 50);
	67
	68	txt = scene_obj_find_by_name(scn, "title");
	69	if (txt)
	70	scene_obj_set_pos(scn, txt->obj.id, 200, 10);
	71
	72	y = 100;
	73	list_for_each_entry(obj, &scn->obj_head, sibling) {
fd6073ac SG	74	switch (obj->type) {
	75	case SCENEOBJT_NONE:
	76	case SCENEOBJT_IMAGE:
	77	case SCENEOBJT_TEXT:
	78	break;
	79	case SCENEOBJT_MENU:
a0874dc4 SG	80	scene_obj_set_pos(scn, obj->id, 50, y);
	81	scene_menu_arrange(scn, (struct scene_obj_menu *)obj);
	82	y += 50;
fd6073ac	83	break;
fe553660 SG	84	case SCENEOBJT_TEXTLINE:
	85	scene_obj_set_pos(scn, obj->id, 50, y);
	86	scene_textline_arrange(scn,
	87	(struct scene_obj_textline *)obj);
	88	y += 50;
	89	break;
a0874dc4 SG	90	}
	91	}
	92
	93	return 0;
	94	}
	95
8d0f890a SG	96	int cedit_prepare(struct expo exp, struct video_priv *vid_privp,
8d0f890a SG	97	struct scene **scnp)
a0874dc4	98	{
a0874dc4	99	struct video_priv *vid_priv;
a0874dc4 SG	100	struct udevice *dev;
a0874dc4 SG	101	struct scene *scn;
8d0f890a	102	uint scene_id;
a0874dc4 SG	103	int ret;
a0874dc4 SG	104
a0874dc4 SG	105	/* For now we only support a video console */
	106	ret = uclass_first_device_err(UCLASS_VIDEO, &dev);
	107	if (ret)
	108	return log_msg_ret("vid", ret);
	109	ret = expo_set_display(exp, dev);
	110	if (ret)
	111	return log_msg_ret("dis", ret);
	112
	113	ret = expo_first_scene_id(exp);
	114	if (ret < 0)
	115	return log_msg_ret("scn", ret);
	116	scene_id = ret;
	117
	118	ret = expo_set_scene_id(exp, scene_id);
	119	if (ret)
	120	return log_msg_ret("sid", ret);
	121
	122	exp->popup = true;
	123
	124	/* This is not supported for now */
	125	if (0)
	126	expo_set_text_mode(exp, true);
	127
	128	vid_priv = dev_get_uclass_priv(dev);
	129
	130	scn = expo_lookup_scene_id(exp, scene_id);
	131	scene_highlight_first(scn);
	132
	133	cedit_arange(exp, vid_priv, scene_id);
	134
	135	ret = expo_calc_dims(exp);
	136	if (ret)
	137	return log_msg_ret("dim", ret);
	138
8d0f890a SG	139	*vid_privp = vid_priv;
	140	*scnp = scn;
	141
	142	return scene_id;
	143	}
	144
	145	int cedit_run(struct expo *exp)
	146	{
	147	struct cli_ch_state s_cch, *cch = &s_cch;
	148	struct video_priv *vid_priv;
	149	uint scene_id;
	150	struct scene *scn;
	151	bool done;
	152	int ret;
	153
	154	cli_ch_init(cch);
	155	ret = cedit_prepare(exp, &vid_priv, &scn);
	156	if (ret < 0)
	157	return log_msg_ret("prep", ret);
	158	scene_id = ret;
	159
a0874dc4 SG	160	done = false;
	161	do {
	162	struct expo_action act;
	163	int ichar, key;
	164
	165	ret = expo_render(exp);
	166	if (ret)
	167	break;
	168
	169	ichar = cli_ch_process(cch, 0);
	170	if (!ichar) {
	171	while (!ichar && !tstc()) {
	172	schedule();
	173	mdelay(2);
	174	ichar = cli_ch_process(cch, -ETIMEDOUT);
	175	}
	176	if (!ichar) {
	177	ichar = getchar();
	178	ichar = cli_ch_process(cch, ichar);
	179	}
	180	}
	181
	182	key = 0;
	183	if (ichar) {
	184	key = bootmenu_conv_key(ichar);
8579cb01	185	if (key == BKEY_NONE \|\| key >= BKEY_FIRST_EXTRA)
a0874dc4 SG	186	key = ichar;
	187	}
	188	if (!key)
	189	continue;
	190
	191	ret = expo_send_key(exp, key);
	192	if (ret)
	193	break;
	194
	195	ret = expo_action_get(exp, &act);
	196	if (!ret) {
	197	switch (act.type) {
	198	case EXPOACT_POINT_OBJ:
	199	scene_set_highlight_id(scn, act.select.id);
	200	cedit_arange(exp, vid_priv, scene_id);
	201	break;
	202	case EXPOACT_OPEN:
	203	scene_set_open(scn, act.select.id, true);
	204	cedit_arange(exp, vid_priv, scene_id);
	205	break;
	206	case EXPOACT_CLOSE:
	207	scene_set_open(scn, act.select.id, false);
	208	cedit_arange(exp, vid_priv, scene_id);
	209	break;
	210	case EXPOACT_SELECT:
	211	scene_set_open(scn, scn->highlight_id, false);
	212	cedit_arange(exp, vid_priv, scene_id);
	213	break;
	214	case EXPOACT_QUIT:
	215	log_debug("quitting\n");
	216	done = true;
	217	break;
	218	default:
	219	break;
	220	}
	221	}
	222	} while (!done);
	223
	224	if (ret)
	225	return log_msg_ret("end", ret);
	226
	227	return 0;
	228	}
2dee81fe SG	229
	230	static int check_space(int ret, struct abuf *buf)
	231	{
	232	if (ret == -FDT_ERR_NOSPACE) {
	233	if (!abuf_realloc_inc(buf, CEDIT_SIZE_INC))
	234	return log_msg_ret("spc", -ENOMEM);
	235	ret = fdt_resize(abuf_data(buf), abuf_data(buf),
	236	abuf_size(buf));
	237	if (ret)
	238	return log_msg_ret("res", -EFAULT);
	239	}
	240
	241	return 0;
	242	}
	243
909c486d SG	244	/**
	245	* get_cur_menuitem_text() - Get the text of the currently selected item
	246	*
	247	* Looks up the object for the current item, finds text object for it and looks
	248	* up the string for that text
	249	*
	250	* @menu: Menu to look at
	251	* @strp: Returns a pointer to the next
	252	* Return: 0 if OK, -ENOENT if something was not found
	253	*/
fc9c0e07 SG	254	static int get_cur_menuitem_text(const struct scene_obj_menu *menu,
	255	const char **strp)
	256	{
	257	struct scene *scn = menu->obj.scene;
	258	const struct scene_menitem *mi;
	259	const struct scene_obj_txt *txt;
	260	const char *str;
	261
	262	mi = scene_menuitem_find(menu, menu->cur_item_id);
	263	if (!mi)
	264	return log_msg_ret("mi", -ENOENT);
	265
	266	txt = scene_obj_find(scn, mi->label_id, SCENEOBJT_TEXT);
	267	if (!txt)
	268	return log_msg_ret("txt", -ENOENT);
	269
	270	str = expo_get_str(scn->expo, txt->str_id);
	271	if (!str)
	272	return log_msg_ret("str", -ENOENT);
	273	*strp = str;
	274
	275	return 0;
	276	}
	277
117617c7 SG	278	static int write_dt_string(struct abuf buf, const char name, const char *str)
	279	{
	280	int ret, i;
	281
	282	/* write the text of the current item */
	283	ret = -EAGAIN;
	284	for (i = 0; ret && i < 2; i++) {
	285	ret = fdt_property_string(abuf_data(buf), name, str);
	286	if (!i) {
	287	ret = check_space(ret, buf);
	288	if (ret)
	289	return log_msg_ret("rs2", -ENOMEM);
	290	}
	291	}
	292
	293	/* this should not happen */
	294	if (ret)
	295	return log_msg_ret("str", -EFAULT);
	296
	297	return 0;
	298	}
	299
2dee81fe SG	300	static int h_write_settings(struct scene_obj obj, void vpriv)
	301	{
	302	struct cedit_iter_priv *priv = vpriv;
	303	struct abuf *buf = priv->buf;
fe553660	304	int ret;
2dee81fe SG	305
	306	switch (obj->type) {
	307	case SCENEOBJT_NONE:
	308	case SCENEOBJT_IMAGE:
	309	case SCENEOBJT_TEXT:
	310	break;
fe553660 SG	311	case SCENEOBJT_TEXTLINE: {
	312	const struct scene_obj_textline *tline;
	313
	314	tline = (struct scene_obj_textline *)obj;
	315	ret = write_dt_string(buf, obj->name, abuf_data(&tline->buf));
	316	if (ret)
	317	return log_msg_ret("wr2", ret);
	318	break;
	319	}
2dee81fe SG	320	case SCENEOBJT_MENU: {
2dee81fe SG	321	const struct scene_obj_menu *menu;
2dee81fe SG	322	const char *str;
2dee81fe SG	323	char name[80];
fe553660	324	int i;
2dee81fe	325
117617c7	326	/* write the ID of the current item */
2dee81fe SG	327	menu = (struct scene_obj_menu *)obj;
	328	ret = -EAGAIN;
	329	for (i = 0; ret && i < 2; i++) {
	330	ret = fdt_property_u32(abuf_data(buf), obj->name,
	331	menu->cur_item_id);
	332	if (!i) {
	333	ret = check_space(ret, buf);
	334	if (ret)
	335	return log_msg_ret("res", -ENOMEM);
	336	}
	337	}
	338	/* this should not happen */
	339	if (ret)
	340	return log_msg_ret("wrt", -EFAULT);
	341
fc9c0e07 SG	342	ret = get_cur_menuitem_text(menu, &str);
	343	if (ret)
	344	return log_msg_ret("mis", ret);
2dee81fe	345
117617c7	346	/* write the text of the current item */
2dee81fe	347	snprintf(name, sizeof(name), "%s-str", obj->name);
117617c7	348	ret = write_dt_string(buf, name, str);
2dee81fe	349	if (ret)
117617c7	350	return log_msg_ret("wr2", ret);
2dee81fe SG	351
	352	break;
	353	}
	354	}
	355
	356	return 0;
	357	}
	358
	359	int cedit_write_settings(struct expo exp, struct abuf buf)
	360	{
	361	struct cedit_iter_priv priv;
	362	void *fdt;
	363	int ret;
	364
	365	abuf_init(buf);
	366	if (!abuf_realloc(buf, CEDIT_SIZE_INC))
	367	return log_msg_ret("buf", -ENOMEM);
	368
	369	fdt = abuf_data(buf);
	370	ret = fdt_create(fdt, abuf_size(buf));
	371	if (!ret)
	372	ret = fdt_finish_reservemap(fdt);
	373	if (!ret)
	374	ret = fdt_begin_node(fdt, "");
	375	if (!ret)
	376	ret = fdt_begin_node(fdt, CEDIT_NODE_NAME);
	377	if (ret) {
	378	log_debug("Failed to start FDT (err=%d)\n", ret);
	379	return log_msg_ret("sta", -EINVAL);
	380	}
	381
	382	/* write out the items */
	383	priv.buf = buf;
	384	ret = expo_iter_scene_objs(exp, h_write_settings, &priv);
	385	if (ret) {
	386	log_debug("Failed to write settings (err=%d)\n", ret);
	387	return log_msg_ret("set", ret);
	388	}
	389
	390	ret = fdt_end_node(fdt);
	391	if (!ret)
	392	ret = fdt_end_node(fdt);
	393	if (!ret)
	394	ret = fdt_finish(fdt);
	395	if (ret) {
	396	log_debug("Failed to finish FDT (err=%d)\n", ret);
	397	return log_msg_ret("fin", -EINVAL);
	398	}
	399
	400	return 0;
	401	}
472317cb SG	402
	403	static int h_read_settings(struct scene_obj obj, void vpriv)
	404	{
	405	struct cedit_iter_priv *priv = vpriv;
	406	ofnode node = priv->node;
	407
	408	switch (obj->type) {
	409	case SCENEOBJT_NONE:
	410	case SCENEOBJT_IMAGE:
	411	case SCENEOBJT_TEXT:
	412	break;
fe553660 SG	413	case SCENEOBJT_TEXTLINE: {
	414	const struct scene_obj_textline *tline;
	415	const char *val;
	416	int len;
	417
	418	tline = (struct scene_obj_textline *)obj;
	419
	420	val = ofnode_read_prop(node, obj->name, &len);
	421	if (len >= tline->max_chars)
	422	return log_msg_ret("str", -ENOSPC);
	423	strcpy(abuf_data(&tline->buf), val);
	424	break;
	425	}
472317cb SG	426	case SCENEOBJT_MENU: {
	427	struct scene_obj_menu *menu;
	428	uint val;
	429
	430	if (ofnode_read_u32(node, obj->name, &val))
	431	return log_msg_ret("rd", -ENOENT);
	432	menu = (struct scene_obj_menu *)obj;
	433	menu->cur_item_id = val;
	434
	435	break;
	436	}
	437	}
	438
	439	return 0;
	440	}
	441
	442	int cedit_read_settings(struct expo *exp, oftree tree)
	443	{
	444	struct cedit_iter_priv priv;
	445	ofnode root, node;
	446	int ret;
	447
	448	root = oftree_root(tree);
	449	if (!ofnode_valid(root))
	450	return log_msg_ret("roo", -ENOENT);
	451	node = ofnode_find_subnode(root, CEDIT_NODE_NAME);
	452	if (!ofnode_valid(node))
	453	return log_msg_ret("pat", -ENOENT);
	454
	455	/* read in the items */
	456	priv.node = node;
	457	ret = expo_iter_scene_objs(exp, h_read_settings, &priv);
	458	if (ret) {
	459	log_debug("Failed to read settings (err=%d)\n", ret);
	460	return log_msg_ret("set", ret);
	461	}
	462
	463	return 0;
	464	}
fc9c0e07 SG	465
	466	static int h_write_settings_env(struct scene_obj obj, void vpriv)
	467	{
	468	const struct scene_obj_menu *menu;
	469	struct cedit_iter_priv *priv = vpriv;
	470	char name[80], var[60];
	471	const char *str;
	472	int val, ret;
	473
fc9c0e07 SG	474	snprintf(var, sizeof(var), "c.%s", obj->name);
fc9c0e07 SG	475
fd6073ac SG	476	switch (obj->type) {
	477	case SCENEOBJT_NONE:
	478	case SCENEOBJT_IMAGE:
	479	case SCENEOBJT_TEXT:
	480	break;
	481	case SCENEOBJT_MENU:
	482	menu = (struct scene_obj_menu *)obj;
	483	val = menu->cur_item_id;
fc9c0e07	484
fd6073ac SG	485	if (priv->verbose)
fd6073ac SG	486	printf("%s=%d\n", var, val);
fc9c0e07	487
fd6073ac SG	488	ret = env_set_ulong(var, val);
	489	if (ret)
	490	return log_msg_ret("set", ret);
fc9c0e07	491
fd6073ac SG	492	ret = get_cur_menuitem_text(menu, &str);
	493	if (ret)
	494	return log_msg_ret("mis", ret);
fc9c0e07	495
fd6073ac SG	496	snprintf(name, sizeof(name), "c.%s-str", obj->name);
	497	if (priv->verbose)
	498	printf("%s=%s\n", name, str);
	499
	500	ret = env_set(name, str);
	501	if (ret)
	502	return log_msg_ret("st2", ret);
	503	break;
fe553660 SG	504	case SCENEOBJT_TEXTLINE: {
	505	const struct scene_obj_textline *tline;
	506
	507	tline = (struct scene_obj_textline *)obj;
	508	str = abuf_data(&tline->buf);
	509	ret = env_set(var, str);
	510	if (ret)
	511	return log_msg_ret("set", ret);
	512
	513	if (priv->verbose)
	514	printf("%s=%s\n", var, str);
	515
	516	break;
	517	}
fd6073ac	518	}
fc9c0e07 SG	519
	520	return 0;
	521	}
	522
	523	int cedit_write_settings_env(struct expo *exp, bool verbose)
	524	{
	525	struct cedit_iter_priv priv;
	526	int ret;
	527
	528	/* write out the items */
	529	priv.verbose = verbose;
	530	ret = expo_iter_scene_objs(exp, h_write_settings_env, &priv);
	531	if (ret) {
	532	log_debug("Failed to write settings to env (err=%d)\n", ret);
	533	return log_msg_ret("set", ret);
	534	}
	535
	536	return 0;
	537	}
bcf2b720 SG	538
	539	static int h_read_settings_env(struct scene_obj obj, void vpriv)
	540	{
	541	struct cedit_iter_priv *priv = vpriv;
	542	struct scene_obj_menu *menu;
	543	char var[60];
eb6c71b5	544	int val;
bcf2b720	545
bcf2b720 SG	546	snprintf(var, sizeof(var), "c.%s", obj->name);
bcf2b720 SG	547
fd6073ac SG	548	switch (obj->type) {
	549	case SCENEOBJT_NONE:
	550	case SCENEOBJT_IMAGE:
	551	case SCENEOBJT_TEXT:
	552	break;
	553	case SCENEOBJT_MENU:
	554	menu = (struct scene_obj_menu *)obj;
	555	val = env_get_ulong(var, 10, 0);
	556	if (priv->verbose)
	557	printf("%s=%d\n", var, val);
	558	if (!val)
	559	return log_msg_ret("get", -ENOENT);
	560
	561	/*
	562	* note that no validation is done here, to make sure the ID is
	563	* valid * and actually points to a menu item
	564	*/
	565	menu->cur_item_id = val;
	566	break;
fe553660 SG	567	case SCENEOBJT_TEXTLINE: {
	568	const struct scene_obj_textline *tline;
	569	const char *value;
	570
	571	tline = (struct scene_obj_textline *)obj;
	572	value = env_get(var);
	573	if (value && strlen(value) >= tline->max_chars)
	574	return log_msg_ret("str", -ENOSPC);
	575	if (!value)
	576	value = "";
	577	if (priv->verbose)
	578	printf("%s=%s\n", var, value);
	579	strcpy(abuf_data(&tline->buf), value);
	580	break;
	581	}
fd6073ac	582	}
bcf2b720 SG	583
	584	return 0;
	585	}
	586
	587	int cedit_read_settings_env(struct expo *exp, bool verbose)
	588	{
	589	struct cedit_iter_priv priv;
	590	int ret;
	591
	592	/* write out the items */
	593	priv.verbose = verbose;
	594	ret = expo_iter_scene_objs(exp, h_read_settings_env, &priv);
	595	if (ret) {
	596	log_debug("Failed to read settings from env (err=%d)\n", ret);
	597	return log_msg_ret("set", ret);
	598	}
	599
	600	return 0;
	601	}
eb6c71b5 SG	602
	603	/**
	604	* get_cur_menuitem_seq() - Get the sequence number of a menu's current item
	605	*
	606	* Enumerates the items of a menu (0, 1, 2) and returns the sequence number of
	607	* the currently selected item. If the first item is selected, this returns 0;
	608	* if the second, 1; etc.
	609	*
	610	* @menu: Menu to check
	611	* Return: Sequence number on success, else -ve error value
	612	*/
	613	static int get_cur_menuitem_seq(const struct scene_obj_menu *menu)
	614	{
	615	const struct scene_menitem *mi;
	616	int seq, found;
	617
	618	seq = 0;
	619	found = -1;
	620	list_for_each_entry(mi, &menu->item_head, sibling) {
	621	if (mi->id == menu->cur_item_id) {
	622	found = seq;
	623	break;
	624	}
	625	seq++;
	626	}
	627
	628	if (found == -1)
	629	return log_msg_ret("nf", -ENOENT);
	630
	631	return found;
	632	}
	633
	634	static int h_write_settings_cmos(struct scene_obj obj, void vpriv)
	635	{
	636	const struct scene_obj_menu *menu;
	637	struct cedit_iter_priv *priv = vpriv;
	638	int val, ret;
	639	uint i, seq;
	640
	641	if (obj->type != SCENEOBJT_MENU)
	642	return 0;
	643
	644	menu = (struct scene_obj_menu *)obj;
	645	val = menu->cur_item_id;
	646
	647	ret = get_cur_menuitem_seq(menu);
	648	if (ret < 0)
	649	return log_msg_ret("cur", ret);
	650	seq = ret;
	651	log_debug("%s: seq=%d\n", menu->obj.name, seq);
	652
	653	/* figure out where to place this item */
	654	if (!obj->bit_length)
	655	return log_msg_ret("len", -EINVAL);
	656	if (obj->start_bit + obj->bit_length > CMOS_MAX_BITS)
	657	return log_msg_ret("bit", -E2BIG);
	658
	659	for (i = 0; i < obj->bit_length; i++, seq >>= 1) {
	660	uint bitnum = obj->start_bit + i;
	661
	662	priv->mask[CMOS_BYTE(bitnum)] \|= 1 << CMOS_BIT(bitnum);
	663	if (seq & 1)
	664	priv->value[CMOS_BYTE(bitnum)] \|= BIT(CMOS_BIT(bitnum));
	665	log_debug("bit %x %x %x\n", bitnum,
666	priv->mask[CMOS_BYTE(bitnum)],
667	priv->value[CMOS_BYTE(bitnum)]);
668	}
669
670	return 0;
671	}
672
673	int cedit_write_settings_cmos(struct expo exp, struct udevice dev,
674	bool verbose)
675	{
676	struct cedit_iter_priv priv;
677	int ret, i, count, first, last;
678
679	/* write out the items */
680	priv.mask = calloc(1, CMOS_MAX_BYTES);
681	if (!priv.mask)
682	return log_msg_ret("mas", -ENOMEM);
683	priv.value = calloc(1, CMOS_MAX_BYTES);
684	if (!priv.value) {
685	free(priv.mask);
686	return log_msg_ret("val", -ENOMEM);
687	}
688
689	ret = expo_iter_scene_objs(exp, h_write_settings_cmos, &priv);
690	if (ret) {
691	log_debug("Failed to write CMOS (err=%d)\n", ret);
692	ret = log_msg_ret("set", ret);
693	goto done;
694	}
695
696	/* write the data to the RTC */
697	first = CMOS_MAX_BYTES;
698	last = -1;
699	for (i = 0, count = 0; i < CMOS_MAX_BYTES; i++) {
700	if (priv.mask[i]) {
701	log_debug("Write byte %x: %x\n", i, priv.value[i]);
702	ret = rtc_write8(dev, i, priv.value[i]);
703	if (ret) {
704	ret = log_msg_ret("wri", ret);
705	goto done;
706	}
707	count++;
708	first = min(first, i);
709	last = max(last, i);
710	}
711	}
712	if (verbose) {
713	printf("Write %d bytes from offset %x to %x\n", count, first,
714	last);
715	}
716
717	done:
718	free(priv.mask);
719	free(priv.value);
720	return ret;
721	}
cfc402db SG	722
	723	static int h_read_settings_cmos(struct scene_obj obj, void vpriv)
	724	{
	725	struct cedit_iter_priv *priv = vpriv;
	726	const struct scene_menitem *mi;
	727	struct scene_obj_menu *menu;
	728	int val, ret;
	729	uint i;
	730
	731	if (obj->type != SCENEOBJT_MENU)
	732	return 0;
	733
	734	menu = (struct scene_obj_menu *)obj;
	735
	736	/* figure out where to place this item */
	737	if (!obj->bit_length)
	738	return log_msg_ret("len", -EINVAL);
	739	if (obj->start_bit + obj->bit_length > CMOS_MAX_BITS)
	740	return log_msg_ret("bit", -E2BIG);
	741
	742	val = 0;
	743	for (i = 0; i < obj->bit_length; i++) {
	744	uint bitnum = obj->start_bit + i;
	745	uint offset = CMOS_BYTE(bitnum);
	746
	747	/* read the byte if not already read */
	748	if (!priv->mask[offset]) {
	749	ret = rtc_read8(priv->dev, offset);
	750	if (ret < 0)
	751	return log_msg_ret("rea", ret);
	752	priv->value[offset] = ret;
	753
	754	/* mark it as read */
	755	priv->mask[offset] = 0xff;
	756	}
	757
	758	if (priv->value[offset] & BIT(CMOS_BIT(bitnum)))
	759	val \|= BIT(i);
	760	log_debug("bit %x %x\n", bitnum, val);
	761	}
	762
	763	/* update the current item */
	764	mi = scene_menuitem_find_seq(menu, val);
	765	if (!mi)
	766	return log_msg_ret("seq", -ENOENT);
	767
	768	menu->cur_item_id = mi->id;
	769	log_debug("Update menu %d cur_item_id %d\n", menu->obj.id, mi->id);
	770
	771	return 0;
	772	}
	773
	774	int cedit_read_settings_cmos(struct expo exp, struct udevice dev,
	775	bool verbose)
	776	{
	777	struct cedit_iter_priv priv;
	778	int ret, i, count, first, last;
	779
	780	/* read in the items */
	781	priv.mask = calloc(1, CMOS_MAX_BYTES);
	782	if (!priv.mask)
	783	return log_msg_ret("mas", -ENOMEM);
	784	priv.value = calloc(1, CMOS_MAX_BYTES);
	785	if (!priv.value) {
786	free(priv.mask);
787	return log_msg_ret("val", -ENOMEM);
788	}
789	priv.dev = dev;
790
791	ret = expo_iter_scene_objs(exp, h_read_settings_cmos, &priv);
792	if (ret) {
793	log_debug("Failed to read CMOS (err=%d)\n", ret);
794	ret = log_msg_ret("set", ret);
795	goto done;
796	}
797
798	/* read the data to the RTC */
799	first = CMOS_MAX_BYTES;
800	last = -1;
801	for (i = 0, count = 0; i < CMOS_MAX_BYTES; i++) {
802	if (priv.mask[i]) {
803	log_debug("Read byte %x: %x\n", i, priv.value[i]);
804	count++;
805	first = min(first, i);
806	last = max(last, i);
807	}
808	}
809	if (verbose) {
810	printf("Read %d bytes from offset %x to %x\n", count, first,
811	last);
812	}
813
814	done:
815	free(priv.mask);
816	free(priv.value);
817	return ret;
818	}