HV: elf_loader: introduce the multiboot_header data structure

Define the multiboot_header data structure and
MULTIBOOT_MEMORY related definitions.

Tracked-On: projectacrn#8642

Signed-off-by: Zhang Chen <[email protected]>
Signed-off-by: Victor Sun <[email protected]>
Reviewed-by: Junjie Mao <[email protected]>

hypervisor/boot/include/multiboot_std.h

@@ -48,6 +48,36 @@
 #define	MULTIBOOT_INFO_HAS_LOADER_NAME			0x00000200U
 
 #ifndef ASSEMBLER
+
+struct multiboot_header {
+	/* Must be MULTIBOOT_MAGIC - see above. */
+	uint32_t magic;
+
+	/* Feature flags. */
+	uint32_t flags;
+
+	/* The above fields plus this one must equal 0 mod 2^32. */
+	uint32_t checksum;
+
+	/* These are only valid if MULTIBOOT_AOUT_KLUDGE is set. */
+	uint32_t header_addr;
+	uint32_t load_addr;
+	uint32_t load_end_addr;
+	uint32_t bss_end_addr;
+	uint32_t entry_addr;
+
+	/* These are only valid if MULTIBOOT_VIDEO_MODE is set. */
+	uint32_t mode_type;
+	uint32_t width;
+	uint32_t height;
+	uint32_t depth;
+} __packed;
+
+#define MULTIBOOT_MEMORY_AVAILABLE			1U
+#define MULTIBOOT_MEMORY_RESERVED			2U
+#define MULTIBOOT_MEMORY_ACPI_RECLAIMABLE		3U
+#define MULTIBOOT_MEMORY_NVS				4U
+#define MULTIBOOT_MEMORY_BADRAM				5U
 struct multiboot_mmap {
 	uint32_t	size;
 	uint64_t	baseaddr;