From a5a1c6c55aeb9db352d116806ab01477e6dec344 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Sat, 7 Oct 2023 15:49:43 +0200
Subject: x86_64: add support for bootable image generation

---
 source/kernel/arch/x86_64/CMakeLists.txt      | 29 +++++++++++++++++++++++++++
 source/kernel/arch/x86_64/support/grub.cfg.in |  7 +++++++
 2 files changed, 36 insertions(+)
 create mode 100644 source/kernel/arch/x86_64/support/grub.cfg.in

(limited to 'source/kernel/arch')

diff --git a/source/kernel/arch/x86_64/CMakeLists.txt b/source/kernel/arch/x86_64/CMakeLists.txt
index fe067ef..303ae1f 100644
--- a/source/kernel/arch/x86_64/CMakeLists.txt
+++ b/source/kernel/arch/x86_64/CMakeLists.txt
@@ -26,3 +26,32 @@ target_link_libraries("kernel" PRIVATE
 set_target_properties("kernel" PROPERTIES
   LINK_DEPENDS "${TEACHOS_KERNEL_LINKER_SCRIPT}"
 )
+
+#[============================================================================[
+# Bootable ISO image generation
+#]============================================================================]
+
+find_package("grub-mkrescue")
+
+if(grub-mkrescue_FOUND)
+  set(ISO_FILE "${PROJECT_BINARY_DIR}/teachos-${PROJECT_VERSION}.iso")
+
+  file(GENERATE
+    OUTPUT "isofs/boot/grub/grub.cfg"
+    INPUT "support/grub.cfg.in"
+  )
+
+  add_custom_target("bootable-iso"
+    COMMAND "${GRUB_MKRESCUE_EXE}"
+    "-o"
+    "${ISO_FILE}"
+    "${CMAKE_CURRENT_BINARY_DIR}/isofs"
+    "$<TARGET_FILE:kernel>"
+    "2>/dev/null"
+    SOURCES
+    "$<TARGET_FILE:kernel>"
+    "isofs/boot/grub/grub.cfg"
+    BYPRODUCTS "${ISO_FILE}"
+    COMMENT "Creating bootable ISO image"
+  )
+endif()
\ No newline at end of file
diff --git a/source/kernel/arch/x86_64/support/grub.cfg.in b/source/kernel/arch/x86_64/support/grub.cfg.in
new file mode 100644
index 0000000..49f19ce
--- /dev/null
+++ b/source/kernel/arch/x86_64/support/grub.cfg.in
@@ -0,0 +1,7 @@
+timeout=2
+default=0
+
+menuentry "TeachOS" {
+    multiboot2 /$<TARGET_FILE_NAME:kernel>
+    boot
+}
\ No newline at end of file
-- 
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