initial

1 files changed, 38 insertions, 0 deletions

diff --git a/kernel/src/boot/tag.h b/kernel/src/boot/tag.h
new file mode 100644
index 0000000..f9853e5
--- /dev/null
+++ b/kernel/src/boot/tag.h
@@ -0,0 +1,38 @@
+#pragma once 
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "acpi/acpi.h"
+#include "graphics/framebuffer.h"
+#include "memory/memory.h"
+
+#define CMDLINE_MAX 32
+
+struct BootTag {
+    uint8_t valid;
+    uint32_t type;
+    uint32_t size;
+    union {
+        char cmdline[CMDLINE_MAX];
+        struct Framebuffer *framebuffer;
+        struct MemoryMap *memory_map;
+        struct RootSystemDescriptionPointer *rsdp;
+    } data;
+};
+
+struct BootInfo {
+    uint32_t total_size;
+    uint32_t reserved;
+    struct BootTag tags[21];
+};
+
+enum BootTagID {
+    ID_CMDLINE = 0,
+    iD_MEMORYMAP = 6,
+    ID_FRAMEBUFFER = 8,
+    ID_RSDP = 14
+};
+
+void load_boot_info(void* boot_info);
+bool get_boot_tag(enum BootTagID id, struct BootTag **tag);