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 | 34 ++++++++++++++++++++++++-----
 common/menu.c  | 58 ++++++++++++++++++++++++++++++++++++++++++++++++--
 include/menu.h | 12 +++++++----
 3 files changed, 93 insertions(+), 11 deletions(-)

--- a/cmd/bootmenu.c
+++ b/cmd/bootmenu.c
@@ -88,6 +88,7 @@ static char *bootmenu_choice_entry(void
 	struct bootmenu_data *menu = data;
 	struct bootmenu_entry *iter;
 	enum bootmenu_key key = BKEY_NONE;
+	int choice = -1;
 	int i;
 
 	cli_ch_init(cch);
@@ -95,10 +96,10 @@ static char *bootmenu_choice_entry(void
 	while (1) {
 		if (menu->delay >= 0) {
 			/* Autoboot was not stopped */
-			key = bootmenu_autoboot_loop(menu, cch);
+			key = bootmenu_autoboot_loop(menu, cch, &choice);
 		} else {
 			/* Some key was pressed, so autoboot was stopped */
-			key = bootmenu_loop(menu, cch);
+			key = bootmenu_loop(menu, cch, &choice);
 		}
 
 		switch (key) {
@@ -114,6 +115,12 @@ static char *bootmenu_choice_entry(void
 				++menu->active;
 			/* no menu key selected, regenerate menu */
 			return NULL;
+		case BKEY_CHOICE:
+			menu->active = choice;
+			if (!menu->last_choiced) {
+				menu->last_choiced = true;
+				return NULL;
+			}
 		case BKEY_SELECT:
 			iter = menu->first;
 			for (i = 0; i < menu->active; ++i)
@@ -182,6 +189,9 @@ 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 +206,24 @@ static int prepare_bootmenu_entry(struct
 		if (!entry)
 			return -ENOMEM;
 
-		entry->title = strndup(option, sep - option);
+		/* Add KEY_CHOICE support: '%d. %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) {
@@ -347,6 +370,7 @@ static struct bootmenu_data *bootmenu_cr
 	menu->active = 0;
 	menu->last_active = -1;
 	menu->first = NULL;
+	menu->last_choiced = false;
 
 	default_str = env_get("bootmenu_default");
 	if (default_str)
@@ -382,9 +406,9 @@ 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
@@ -49,6 +49,33 @@ 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
@@ -437,7 +464,7 @@ int menu_destroy(struct menu *m)
 }
 
 enum bootmenu_key bootmenu_autoboot_loop(struct bootmenu_data *menu,
-					 struct cli_ch_state *cch)
+					 struct cli_ch_state *cch, int *choice)
 {
 	enum bootmenu_key key = BKEY_NONE;
 	int i, c;
@@ -472,6 +499,19 @@ enum bootmenu_key bootmenu_autoboot_loop
 				break;
 			default:
 				key = BKEY_NONE;
+				if (cch->esc_len || !choice)
+					break;
+
+				*choice = find_choice(c);
+				if ((*choice >= 0 &&
+				     *choice < menu->count - 1)) {
+					key = BKEY_CHOICE;
+				} else if (c == '0') {
+					*choice = menu->count - 1;
+					key = BKEY_CHOICE;
+				} else {
+					key = BKEY_NONE;
+				}
 				break;
 			}
 			break;
@@ -492,7 +532,8 @@ enum bootmenu_key bootmenu_autoboot_loop
 	return key;
 }
 
-enum bootmenu_key bootmenu_conv_key(int ichar)
+enum bootmenu_key bootmenu_conv_key(struct bootmenu_data *menu, int ichar,
+				    int *choice)
 {
 	enum bootmenu_key key;
 
@@ -524,6 +565,20 @@ enum bootmenu_key bootmenu_conv_key(int
 	case ' ':
 		key = BKEY_SPACE;
 		break;
+	case '0' ... '9':
+	case 'a' ... 'z':
+		if (choice && menu) {
+			*choice = find_choice(ichar);
+			if ((*choice >= 0 && *choice < menu->count - 1)) {
+				key = BKEY_CHOICE;
+				break;
+			} else if (ichar == '0') {
+				*choice = menu->count - 1;
+				key = BKEY_CHOICE;
+				break;
+			}
+		}
+		fallthrough;
 	default:
 		key = BKEY_NONE;
 		break;
@@ -533,11 +588,17 @@ enum bootmenu_key bootmenu_conv_key(int
 }
 
 enum bootmenu_key bootmenu_loop(struct bootmenu_data *menu,
-				struct cli_ch_state *cch)
+				struct cli_ch_state *cch,
+				int *choice)
 {
 	enum bootmenu_key key;
 	int c, errchar = 0;
 
+	if (menu->last_choiced) {
+		menu->last_choiced = false;
+		return BKEY_SELECT;
+	}
+
 	c = cli_ch_process(cch, 0);
 	if (!c) {
 		while (!c && !tstc()) {
@@ -552,7 +613,7 @@ enum bootmenu_key bootmenu_loop(struct b
 		}
 	}
 
-	key = bootmenu_conv_key(c);
+	key = bootmenu_conv_key(menu, c, choice);
 
 	return key;
 }
--- a/include/menu.h
+++ b/include/menu.h
@@ -6,6 +6,8 @@
 #ifndef __MENU_H__
 #define __MENU_H__
 
+#include <linux/ctype.h>
+
 struct cli_ch_state;
 struct menu;
 
@@ -20,6 +22,8 @@ int menu_get_choice(struct menu *m, void
 int menu_item_add(struct menu *m, char *item_key, void *item_data);
 int menu_destroy(struct menu *m);
 int menu_default_choice(struct menu *m, void **choice);
+/* Add KEY_CHOICE support */
+int get_choice_char(int index, char *result);
 
 /**
  * menu_show() Show a boot menu
@@ -43,6 +47,7 @@ struct bootmenu_data {
 	int last_active;		/* last active menu entry */
 	int count;			/* total count of menu entries */
 	struct bootmenu_entry *first;	/* first menu entry */
+	bool last_choiced;
 };
 
 /** enum bootmenu_key - keys that can be returned by the bootmenu */
@@ -53,6 +58,7 @@ enum bootmenu_key {
 	BKEY_SELECT,
 	BKEY_QUIT,
 	BKEY_SAVE,
+	BKEY_CHOICE,
 
 	/* 'extra' keys, which are used by menus but not cedit */
 	BKEY_PLUS,
@@ -83,7 +89,7 @@ enum bootmenu_key {
  *	anything else: KEY_NONE
  */
 enum bootmenu_key bootmenu_autoboot_loop(struct bootmenu_data *menu,
-					 struct cli_ch_state *cch);
+					 struct cli_ch_state *cch, int *choice);
 
 /**
  * bootmenu_loop() - handle waiting for a keypress when autoboot is disabled
@@ -109,7 +115,7 @@ enum bootmenu_key bootmenu_autoboot_loop
  *	Space: BKEY_SPACE
  */
 enum bootmenu_key bootmenu_loop(struct bootmenu_data *menu,
-				struct cli_ch_state *cch);
+				struct cli_ch_state *cch, int *choice);
 
 /**
  * bootmenu_conv_key() - Convert a U-Boot keypress into a menu key
@@ -117,6 +123,7 @@ enum bootmenu_key bootmenu_loop(struct b
  * @ichar: Keypress to convert (ASCII, including control characters)
  * Returns: Menu key that corresponds to @ichar, or BKEY_NONE if none
  */
-enum bootmenu_key bootmenu_conv_key(int ichar);
+enum bootmenu_key bootmenu_conv_key(struct bootmenu_data *menu, int ichar,
+				    int *choice);
 
 #endif /* __MENU_H__ */
--- a/cmd/eficonfig.c
+++ b/cmd/eficonfig.c
@@ -239,7 +239,7 @@ char *eficonfig_choice_entry(void *data)
 	cli_ch_init(cch);
 
 	while (1) {
-		key = bootmenu_loop((struct bootmenu_data *)efi_menu, cch);
+		key = bootmenu_loop((struct bootmenu_data *)efi_menu, cch, NULL);
 
 		switch (key) {
 		case BKEY_UP:
@@ -1881,7 +1881,7 @@ char *eficonfig_choice_change_boot_order
 
 	cli_ch_init(cch);
 	while (1) {
-		key = bootmenu_loop(NULL, cch);
+		key = bootmenu_loop(NULL, cch, NULL);
 
 		switch (key) {
 		case BKEY_PLUS:
--- a/boot/bootflow_menu.c
+++ b/boot/bootflow_menu.c
@@ -240,7 +240,7 @@ int bootflow_menu_run(struct bootstd_pri
 
 		key = 0;
 		if (ichar) {
-			key = bootmenu_conv_key(ichar);
+			key = bootmenu_conv_key(NULL, ichar, NULL);
 			if (key == BKEY_NONE)
 				key = ichar;
 		}
