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-rw-r--r--boot/cedit.c817
1 files changed, 817 insertions, 0 deletions
diff --git a/boot/cedit.c b/boot/cedit.c
new file mode 100644
index 00000000000..c29a2be14ce
--- /dev/null
+++ b/boot/cedit.c
@@ -0,0 +1,817 @@
+// 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 <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;
+}
generated by cgit v1.2.3 (git 2.0.4) at 2025-07-20 14:34:15 +0000