From ab46f44ebd4835aca619897a4f566ec8ebc412b3 Mon Sep 17 00:00:00 2001
From: Edgar Fouillet <git@edgar.fouillet.eu>
Date: Thu, 13 Oct 2022 13:06:22 +0200
Subject: [PATCH] grub: add generation depending on env variables

 * ELSOS_KBD_LAYOUT can be set to qwerty to set default boot to qwerty
 * ELSOS_BOOT_TIMEOUT can be set to a number of seconds
---
 .gitignore                     |  1 +
 Makefile                       |  7 ++++++-
 grub/{grub.cfg => generate.sh} | 22 +++++++++++++++++++++-
 3 files changed, 28 insertions(+), 2 deletions(-)
 rename grub/{grub.cfg => generate.sh} (53%)

diff --git a/.gitignore b/.gitignore
index 7c13ee9..d1fb689 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@
 *.swp
 build
 target
+grub/grub.cfg
diff --git a/Makefile b/Makefile
index 1cf278f..aca3654 100644
--- a/Makefile
+++ b/Makefile
@@ -50,7 +50,8 @@ rundd: $(ISO)
 
 iso: $(ISO)
 
-$(ISO): $(KERNEL) $(GRUB_CFG)
+$(ISO): $(KERNEL)
+	bash grub/generate.sh
 	mkdir -p build/iso/boot/grub
 	cp $(KERNEL) build/iso/boot/elsos.bin
 	cp $(GRUB_CFG) build/iso/boot/grub
@@ -89,3 +90,7 @@ mrproper: clean
 
 re: mrproper
 	make all
+
+reiso:
+	rm $(ISO)
+	make iso
diff --git a/grub/grub.cfg b/grub/generate.sh
similarity index 53%
rename from grub/grub.cfg
rename to grub/generate.sh
index e780387..b08e470 100644
--- a/grub/grub.cfg
+++ b/grub/generate.sh
@@ -1,4 +1,23 @@
-timeout=2
+#!/bin/bash
+cd "$(dirname "$0")"
+
+GRUB_DEFAULT=0
+GRUB_TIMEOUT=0
+if [ "$ELSOS_KBD_LAYOUT" = "qwerty" ]
+then
+	GRUB_DEFAULT=1
+fi
+
+if [ -z ${ELSOS_BOOT_TIMEOUT+x} ]
+then
+	GRUB_TIMEOUT=0
+else
+	GRUB_TIMEOUT=$ELSOS_BOOT_TIMEOUT
+fi
+
+cat > grub.cfg << EOF
+default=$GRUB_DEFAULT
+timeout=$GRUB_TIMEOUT
 
 menuentry "elsOS with serial, azerty" {
    multiboot2 /boot/elsos.bin serial
@@ -19,3 +38,4 @@ menuentry "elsOS, qwerty ansi" {
    multiboot2 /boot/elsos.bin qwerty
    boot
 }
+EOF