1 files changed, 36 insertions, 2 deletions
diff --git a/arch/x86_64/include/arch/boot/multiboot.hpp b/arch/x86_64/include/arch/boot/multiboot.hpp
index c6fed55..9a0757e 100644
--- a/arch/x86_64/include/arch/boot/multiboot.hpp
+++ b/arch/x86_64/include/arch/boot/multiboot.hpp
@@ -10,5 +10,39 @@ struct multiboot_info
 {
   uint32_t total_size;
   uint32_t reserved;
-  struct multiboot_tag tags[1];  // TODO: Size 0
-};
-\ No newline at end of file
+  /*
+   * field "tags" is an array of multiboot_tags, however the array is never
+   * being accessed by index and using an array definition with size 0 produces a compiler
+   * error.
+   */
+  struct multiboot_tag tags;
+};
+
+/*
+ * Define all multiboot tag types to ther respective values
+ * The gnu boot information format is defined here:
+ * https://www.gnu.org/software/grub/manual/multiboot2/multiboot.html#Boot-information-format
+ */
+#define MULTIBOOT_TAG_ALIGN 8
+#define MULTIBOOT_TAG_TYPE_END 0
+#define MULTIBOOT_TAG_TYPE_CMDLINE 1
+#define MULTIBOOT_TAG_TYPE_BOOT_LOADER_NAME 2
+#define MULTIBOOT_TAG_TYPE_MODULE 3
+#define MULTIBOOT_TAG_TYPE_BASIC_MEMINFO 4
+#define MULTIBOOT_TAG_TYPE_BOOTDEV 5
+#define MULTIBOOT_TAG_TYPE_MMAP 6
+#define MULTIBOOT_TAG_TYPE_VBE 7
+#define MULTIBOOT_TAG_TYPE_FRAMEBUFFER 8
+#define MULTIBOOT_TAG_TYPE_ELF_SECTIONS 9
+#define MULTIBOOT_TAG_TYPE_APM 10
+#define MULTIBOOT_TAG_TYPE_EFI32 11
+#define MULTIBOOT_TAG_TYPE_EFI64 12
+#define MULTIBOOT_TAG_TYPE_SMBIOS 13
+#define MULTIBOOT_TAG_TYPE_ACPI_OLD 14
+#define MULTIBOOT_TAG_TYPE_ACPI_NEW 15
+#define MULTIBOOT_TAG_TYPE_NETWORK 16
+#define MULTIBOOT_TAG_TYPE_EFI_MMAP 17
+#define MULTIBOOT_TAG_TYPE_EFI_BS 18
+#define MULTIBOOT_TAG_TYPE_EFI32_IH 19
+#define MULTIBOOT_TAG_TYPE_EFI64_IH 20
+#define MULTIBOOT_TAG_TYPE_LOAD_BASE_ADDR 21