main: Add autodetection prompt instead of doing it automatically

stage23/entry.s3.c

@@ -24,6 +24,7 @@
 #include <pxe/tftp.h>
 #include <drivers/disk.h>
 #include <sys/lapic.h>
+#include <lib/readline.h>
 
 void stage3_common(void);
 
@@ -162,8 +163,11 @@ void stage3_common(void) {
         print("Boot partition: %d\n", boot_volume->partition);
     }
 
+    bool disable_timeout = false;
+
+menu_again:;
     char *cmdline;
-    char *config = menu(&cmdline);
+    char *config = menu(&cmdline, disable_timeout);
 
     char *proto = config_get_value(config, 0, "PROTOCOL");
     if (proto == NULL) {
@@ -199,6 +203,13 @@ autodetect:
         print("WARNING: Incorrect protocol specified for kernel.\n");
     }
 
-    print("         Attempting autodetection.\n");
+    print("         Press A to attempt autodetection or any other key to return to menu.\n");
-    goto autodetect;
+
+    int c = getchar();
+    if (c == 'a' || c == 'A') {
+        goto autodetect;
+    } else {
+        disable_timeout = true;
+        goto menu_again;
+    }
 }

stage23/menu.c

@@ -513,7 +513,7 @@ static size_t print_tree(const char *shift, size_t level, size_t base_index, siz
     return max_entries;
 }
 
-char *menu(char **cmdline) {
+char *menu(char **cmdline, bool disable_timeout) {
     menu_branding = config_get_value(NULL, 0, "MENU_BRANDING");
     if (menu_branding == NULL)
         menu_branding = "Limine " LIMINE_VERSION;
@@ -544,6 +544,10 @@ char *menu(char **cmdline) {
             timeout = strtoui(timeout_config, NULL, 10);
     }
 
+    if (disable_timeout) {
+        skip_timeout = true;
+    }
+
     bool editor_enabled = true;
     char *editor_enabled_config = config_get_value(NULL, 0, "EDITOR_ENABLED");
     if (!strcmp(editor_enabled_config, "no")) editor_enabled = false;

stage23/menu.h

@@ -1,6 +1,8 @@
 #ifndef __MENU_H__
 #define __MENU_H__
 
-char *menu(char **cmdline_ret);
+#include <stdbool.h>
+
+char *menu(char **cmdline_ret, bool disable_timeout);
 
 #endif