openwrt-cghmn-mt300n/package/boot/uboot-mediatek/patches/100-16-cmd-bootmenu-add-ability-to-select-item-by-shortkey.patch

From 5a15437610e8e8c68dc347845a83d0cbad80ca08 Mon Sep 17 00:00:00 2001
From: Weijie Gao <weijie.gao@mediatek.com>
Date: Tue, 19 Jan 2021 10:58:48 +0800
Subject: [PATCH 51/71] cmd: bootmenu: add ability to select item by shortkey

Add ability to use shortkey to select item for bootmenu command

Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
---
 cmd/bootmenu.c | 28 +++++++++++++++++++++++---
 common/menu.c  | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++
 include/cli.h  |  2 ++
 include/menu.h |  3 +++
 4 files changed, 84 insertions(+), 3 deletions(-)

--- a/cmd/bootmenu.c
+++ b/cmd/bootmenu.c
@@ -114,6 +114,8 @@ static char *bootmenu_choice_entry(void
 				++menu->active;
 			/* no menu key selected, regenerate menu */
 			return NULL;
+		case BKEY_CHOICE:
+			menu->active = cch->choice;
 		case BKEY_SELECT:
 			iter = menu->first;
 			for (i = 0; i < menu->active; ++i)
@@ -182,6 +184,9 @@ static int prepare_bootmenu_entry(struct
 	unsigned short int i = *index;
 	struct bootmenu_entry *entry = NULL;
 	struct bootmenu_entry *iter = *current;
+	char *choice_option;
+	char choice_char;
+	int len;
 
 	while ((option = bootmenu_getoption(i))) {
 
@@ -196,11 +201,28 @@ static int prepare_bootmenu_entry(struct
 		if (!entry)
 			return -ENOMEM;
 
-		entry->title = strndup(option, sep - option);
+		/* Add BKEY_CHOICE support: '%c. %s\0' : len --> len + 4 */
+		len = sep - option + 4;
+
+		choice_option = malloc(len);
+		if (!choice_option) {
+			free(entry->title);
+			free(entry);
+			return -ENOMEM;
+		}
+
+		if (!get_choice_char(i, &choice_char))
+			len = snprintf(choice_option, len, "%c. %s", choice_char, option);
+		else
+			len = snprintf(choice_option, len, "   %s", option);
+
+		entry->title = strndup(choice_option, len);
+
 		if (!entry->title) {
 			free(entry);
 			return -ENOMEM;
 		}
+		free(choice_option);
 
 		entry->command = strdup(sep + 1);
 		if (!entry->command) {
@@ -382,9 +404,9 @@ static struct bootmenu_data *bootmenu_cr
 
 		/* Add Quit entry if exiting bootmenu is disabled */
 		if (!IS_ENABLED(CONFIG_BOOTMENU_DISABLE_UBOOT_CONSOLE))
-			entry->title = strdup("Exit");
+			entry->title = strdup("0. Exit");
 		else
-			entry->title = strdup("Quit");
+			entry->title = strdup("0. Quit");
 
 		if (!entry->title) {
 			free(entry);
--- a/common/menu.c
+++ b/common/menu.c
@@ -8,6 +8,7 @@
 #include <cli.h>
 #include <malloc.h>
 #include <errno.h>
+#include <linux/ctype.h>
 #include <linux/delay.h>
 #include <linux/list.h>
 #include <watchdog.h>
@@ -49,6 +50,33 @@ struct menu {
 	int item_cnt;
 };
 
+const char choice_chars[] = {
+	'1', '2', '3', '4', '5', '6', '7', '8', '9',
+	'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j',
+	'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't',
+	'u', 'v', 'w', 'x', 'y', 'z'
+};
+
+static int find_choice(char choice)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(choice_chars); i++)
+		if (tolower(choice) == choice_chars[i])
+			return i;
+
+	return -1;
+}
+
+int get_choice_char(int index, char *result)
+{
+	if (index < ARRAY_SIZE(choice_chars))
+		*result = choice_chars[index];
+	else
+		return -1;
+	return 0;
+}
+
 /*
  * An iterator function for menu items. callback will be called for each item
  * in m, with m, a pointer to the item, and extra being passed to callback. If
@@ -441,6 +469,7 @@ enum bootmenu_key bootmenu_autoboot_loop
 {
 	enum bootmenu_key key = BKEY_NONE;
 	int i, c;
+	int choice;
 
 	while (menu->delay > 0) {
 		if (ansi)
@@ -458,6 +487,18 @@ enum bootmenu_key bootmenu_autoboot_loop
 			menu->delay = -1;
 			c = getchar();
 
+			choice = find_choice(c);
+			if ((choice >= 0 &&
+			     choice < menu->count - 1)) {
+				cch->choice = choice;
+				key = BKEY_CHOICE;
+				break;
+			} else if (c == '0') {
+				cch->choice = menu->count - 1;
+				key = BKEY_CHOICE;
+				break;
+			}
+
 			ichar = cli_ch_process(cch, c);
 
 			switch (ichar) {
@@ -537,6 +578,7 @@ enum bootmenu_key bootmenu_loop(struct b
 {
 	enum bootmenu_key key;
 	int c, errchar = 0;
+	int choice;
 
 	c = cli_ch_process(cch, 0);
 	if (!c) {
@@ -548,6 +590,18 @@ enum bootmenu_key bootmenu_loop(struct b
 		}
 		if (!c) {
 			c = getchar();
+
+			choice = find_choice(c);
+			if ((choice >= 0 &&
+			     choice < menu->count - 1)) {
+				cch->choice = choice;
+				return BKEY_CHOICE;
+
+			} else if (c == '0') {
+				cch->choice = menu->count - 1;
+				return BKEY_CHOICE;
+			}
+
 			c = cli_ch_process(cch, c);
 		}
 	}
--- a/include/cli.h
+++ b/include/cli.h
@@ -23,6 +23,8 @@ struct cli_ch_state {
 	char esc_save[8];
 	int emit_upto;
 	bool emitting;
+	/* mediatek bootmenu choice feature */
+	char choice;
 };
 
 /**
--- a/include/menu.h
+++ b/include/menu.h
@@ -37,6 +37,8 @@ int menu_default_choice(struct menu *m,
  */
 int menu_show(int bootdelay);
 
+int get_choice_char(int index, char *result);
+
 struct bootmenu_data {
 	int delay;			/* delay for autoboot */
 	int active;			/* active menu entry */
@@ -51,6 +53,7 @@ enum bootmenu_key {
 	BKEY_UP,
 	BKEY_DOWN,
 	BKEY_SELECT,
+	BKEY_CHOICE,
 	BKEY_QUIT,
 	BKEY_SAVE,