1 files changed, 53 insertions, 13 deletions

diff --git a/pc-bios/s390-ccw/netmain.c b/pc-bios/s390-ccw/netmain.c
index 719a547..a9521df 100644
--- a/pc-bios/s390-ccw/netmain.c
+++ b/pc-bios/s390-ccw/netmain.c
@@ -332,22 +332,64 @@ static int load_kernel_with_initrd(filename_ip_t *fn_ip,
     return rc;
 }
 
-#define MAX_PXELINUX_ENTRIES 16
+static int net_boot_menu(int num_ent, int def_ent,
+                         struct pl_cfg_entry *entries)
+{
+    bool valid_entries[MAX_BOOT_ENTRIES] = { false };
+    int idx;
+
+    puts("\ns390-ccw pxelinux.cfg boot menu:\n");
+    printf(" [0] default (%d)\n", def_ent + 1);
+    valid_entries[0] = true;
+
+    for (idx = 1; idx <= num_ent; idx++) {
+        printf(" [%d] %s\n", idx, entries[idx - 1].label);
+        valid_entries[idx] = true;
+    }
+    putchar('\n');
+
+    idx = menu_get_boot_index(valid_entries);
+    putchar('\n');
+
+    return idx;
+}
+
+static int net_select_and_load_kernel(filename_ip_t *fn_ip,
+                                      int num_ent, int selected,
+                                      struct pl_cfg_entry *entries)
+{
+    unsigned int loadparm = get_loadparm_index();
+
+    if (num_ent <= 0) {
+        return -1;
+    }
+
+    if (menu_is_enabled_enum() && num_ent > 1) {
+        loadparm = net_boot_menu(num_ent, selected, entries);
+    }
+
+    IPL_assert(loadparm <= num_ent,
+               "loadparm is set to an entry that is not available in the "
+               "pxelinux.cfg file!");
+
+    if (loadparm > 0) {
+        selected = loadparm - 1;
+    }
+
+    return load_kernel_with_initrd(fn_ip, &entries[selected]);
+}
 
 static int net_try_pxelinux_cfg(filename_ip_t *fn_ip)
 {
-    struct pl_cfg_entry entries[MAX_PXELINUX_ENTRIES];
+    struct pl_cfg_entry entries[MAX_BOOT_ENTRIES];
     int num_ent, def_ent = 0;
 
     num_ent = pxelinux_load_parse_cfg(fn_ip, mac, get_uuid(),
                                       DEFAULT_TFTP_RETRIES,
                                       cfgbuf, sizeof(cfgbuf),
-                                      entries, MAX_PXELINUX_ENTRIES, &def_ent);
-    if (num_ent > 0) {
-        return load_kernel_with_initrd(fn_ip, &entries[def_ent]);
-    }
+                                      entries, MAX_BOOT_ENTRIES, &def_ent);
 
-    return -1;
+    return net_select_and_load_kernel(fn_ip, num_ent, def_ent, entries);
 }
 
 /**
@@ -428,15 +470,13 @@ static int net_try_direct_tftp_load(filename_ip_t *fn_ip)
          * a magic comment string.
          */
         if (!strncasecmp("# pxelinux", cfgbuf, 10)) {
-            struct pl_cfg_entry entries[MAX_PXELINUX_ENTRIES];
+            struct pl_cfg_entry entries[MAX_BOOT_ENTRIES];
             int num_ent, def_ent = 0;
 
             num_ent = pxelinux_parse_cfg(cfgbuf, sizeof(cfgbuf), entries,
-                                         MAX_PXELINUX_ENTRIES, &def_ent);
-            if (num_ent <= 0) {
-                return -1;
-            }
-            return load_kernel_with_initrd(fn_ip, &entries[def_ent]);
+                                         MAX_BOOT_ENTRIES, &def_ent);
+            return net_select_and_load_kernel(fn_ip, num_ent, def_ent,
+                                              entries);
         }
     }