1 files changed, 37 insertions, 3 deletions

diff --git a/arch/x86_64/include/arch/boot/multiboot.hpp b/arch/x86_64/include/arch/boot/multiboot.hpp
index c39081a..dfb289d 100644
--- a/arch/x86_64/include/arch/boot/multiboot.hpp
+++ b/arch/x86_64/include/arch/boot/multiboot.hpp
@@ -11,9 +11,9 @@ struct multiboot_info
   uint32_t total_size;
   uint32_t reserved;
   /*
-   * 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.
+   * field "tags" is an array of multiboot_tag, however the array is never
+   * being accessed by index we don't know the real size at compile-time,
+   * and using an array definition with size 0 produces a compiler error.
    */
   struct multiboot_tag tags;
 };
@@ -22,6 +22,11 @@ struct memory_map_entry
 {
   uint64_t base_addr;
   uint64_t length;
+#define MULTIBOOT_MEMORY_AVAILABLE 1
+#define MULTIBOOT_MEMORY_RESERVED 2
+#define MULTIBOOT_MEMORY_ACPI_RECLAIMABLE 3
+#define MULTIBOOT_MEMORY_NVS 4
+#define MULTIBOOT_MEMORY_BADRAM 5
   uint32_t type;
   uint32_t reserved;
 };
@@ -31,9 +36,38 @@ struct memory_map_info
   multiboot_tag tag;
   uint32_t entry_size;
   uint32_t entry_version;
+  /*
+   * field "entries" is an array of memory_map_entry, however the array is never
+   * being accessed by index, we don't know the real size at compile-time,
+   * and using an array definition with size 0 produces a compiler error.
+   */
   struct memory_map_entry entries;
 };
 
+struct elf64_section_header
+{
+  uint32_t sh_name;
+  uint32_t sh_type;
+  uint64_t sh_flags;
+  uint64_t sh_addr;
+  uint64_t sh_offset;
+  uint64_t sh_size;
+  uint32_t sh_link;
+  uint32_t sh_info;
+  uint64_t sh_addralign;
+  uint64_t sh_entsize;
+};
+
+struct elf_symbols_section
+{
+  multiboot_tag tag;
+  uint16_t num;
+  uint16_t entsize;
+  uint16_t shndx;
+  uint16_t reserved;
+  struct elf64_section_header sections;
+};
+
 /*
  * Define all multiboot tag types to ther respective values
  * The gnu boot information format is defined here: