HEADmaster

1 files changed, 104 insertions, 0 deletions

diff --git a/kernel/uefi.h b/kernel/uefi.h
new file mode 100644
index 0000000..722dfac
--- /dev/null
+++ b/kernel/uefi.h
@@ -0,0 +1,104 @@
+#pragma once
+
+#include <stdint.h>
+
+typedef enum
+{
+    ///
+    /// Not used.
+    ///
+    EfiReservedMemoryType,
+    ///
+    /// The code portions of a loaded application.
+    /// (Note that UEFI OS loaders are UEFI applications.)
+    ///
+    EfiLoaderCode,
+    ///
+    /// The data portions of a loaded application and the default data allocation
+    /// type used by an application to allocate pool memory.
+    ///
+    EfiLoaderData,
+    ///
+    /// The code portions of a loaded Boot Services Driver.
+    ///
+    EfiBootServicesCode,
+    ///
+    /// The data portions of a loaded Boot Serves Driver, and the default data
+    /// allocation type used by a Boot Services Driver to allocate pool memory.
+    ///
+    EfiBootServicesData,
+    ///
+    /// The code portions of a loaded Runtime Services Driver.
+    ///
+    EfiRuntimeServicesCode,
+    ///
+    /// The data portions of a loaded Runtime Services Driver and the default
+    /// data allocation type used by a Runtime Services Driver to allocate pool memory.
+    ///
+    EfiRuntimeServicesData,
+    ///
+    /// Free (unallocated) memory.
+    ///
+    EfiConventionalMemory,
+    ///
+    /// Memory in which errors have been detected.
+    ///
+    EfiUnusableMemory,
+    ///
+    /// Memory that holds the ACPI tables.
+    ///
+    EfiACPIReclaimMemory,
+    ///
+    /// Address space reserved for use by the firmware.
+    ///
+    EfiACPIMemoryNVS,
+    ///
+    /// Used by system firmware to request that a memory-mapped IO region
+    /// be mapped by the OS to a virtual address so it can be accessed by EFI runtime services.
+    ///
+    EfiMemoryMappedIO,
+    ///
+    /// System memory-mapped IO region that is used to translate memory
+    /// cycles to IO cycles by the processor.
+    ///
+    EfiMemoryMappedIOPortSpace,
+    ///
+    /// Address space reserved by the firmware for code that is part of the processor.
+    ///
+    EfiPalCode,
+    ///
+    /// A memory region that operates as EfiConventionalMemory,
+    /// however it happens to also support byte-addressable non-volatility.
+    ///
+    EfiPersistentMemory,
+    ///
+    /// A memory region that describes system memory that has not been accepted
+    /// by a corresponding call to the underlying isolation architecture.
+    ///
+    EfiUnacceptedMemoryType,
+    EfiMaxMemoryType,
+    //
+    // +---------------------------------------------------+
+    // | 0..(EfiMaxMemoryType - 1)    - Normal memory type |
+    // +---------------------------------------------------+
+    // | EfiMaxMemoryType..0x6FFFFFFF - Invalid            |
+    // +---------------------------------------------------+
+    // | 0x70000000..0x7FFFFFFF       - OEM reserved       |
+    // +---------------------------------------------------+
+    // | 0x80000000..0xFFFFFFFF       - OS reserved        |
+    // +---------------------------------------------------+
+    //
+    MEMORY_TYPE_OEM_RESERVED_MIN = 0x70000000,
+    MEMORY_TYPE_OEM_RESERVED_MAX = 0x7FFFFFFF,
+    MEMORY_TYPE_OS_RESERVED_MIN  = 0x80000000,
+    MEMORY_TYPE_OS_RESERVED_MAX  = 0xFFFFFFFF
+} EFI_MEMORY_TYPE;
+
+typedef struct __attribute__((packed))
+{
+    uint32_t type;
+    uint64_t physicalStart;
+    uint64_t virtualStart;
+    uint64_t numberOfPages;
+    uint64_t Attribute;
+} EFI_MEMORY_DESCRIPTOR;