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diff --git a/roms/seabios/src/types.h b/roms/seabios/src/types.h
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+// Basic type definitions for X86 cpus.
+//
+// Copyright (C) 2008-2010  Kevin O'Connor <kevin@koconnor.net>
+//
+// This file may be distributed under the terms of the GNU LGPLv3 license.
+#ifndef __TYPES_H
+#define __TYPES_H
+
+typedef unsigned char u8;
+typedef signed char s8;
+typedef unsigned short u16;
+typedef signed short s16;
+typedef unsigned int u32;
+typedef signed int s32;
+typedef unsigned long long u64;
+typedef signed long long s64;
+typedef u32 size_t;
+
+union u64_u32_u {
+    struct { u32 lo, hi; };
+    u64 val;
+};
+
+// Definition for common 16bit segment/offset pointers.
+struct segoff_s {
+    union {
+        struct {
+            u16 offset;
+            u16 seg;
+        };
+        u32 segoff;
+    };
+};
+
+#ifdef MANUAL_NO_JUMP_TABLE
+# define default case 775324556: asm(""); default
+#endif
+
+#ifdef WHOLE_PROGRAM
+# define __VISIBLE __attribute__((externally_visible))
+#else
+# define __VISIBLE
+#endif
+
+#define UNIQSEC __FILE__ "." __stringify(__LINE__)
+
+#define __noreturn __attribute__((noreturn))
+extern void __force_link_error__only_in_32bit_flat(void) __noreturn;
+extern void __force_link_error__only_in_32bit_segmented(void) __noreturn;
+extern void __force_link_error__only_in_16bit(void) __noreturn;
+
+#define __ASM(code) asm(".section .text.asm." UNIQSEC "\n\t" code)
+
+#if MODE16 == 1
+// Notes a function as externally visible in the 16bit code chunk.
+# define VISIBLE16 __VISIBLE
+// Notes a function as externally visible in the 32bit flat code chunk.
+# define VISIBLE32FLAT
+// Notes a 32bit flat function that will only be called during init.
+# define VISIBLE32INIT
+// Notes a function as externally visible in the 32bit segmented code chunk.
+# define VISIBLE32SEG
+// Designate a variable as (only) visible to 16bit code.
+# define VAR16 __section(".data16." UNIQSEC)
+// Designate a variable as (only) visible to 32bit segmented code.
+# define VAR32SEG __section(".discard.var32seg." UNIQSEC)
+// Designate a variable as visible and located in the e-segment.
+# define VARLOW __section(".discard.varlow." UNIQSEC) __VISIBLE __weak
+// Designate a variable as visible and located in the f-segment.
+# define VARFSEG __section(".discard.varfseg." UNIQSEC) __VISIBLE __weak
+// Designate a variable at a specific address in the f-segment.
+# define VARFSEGFIXED(addr) __section(".discard.varfixed." UNIQSEC) __VISIBLE __weak
+// Verify a variable is only accessable via 32bit "init" functions
+# define VARVERIFY32INIT __section(".discard.varinit." UNIQSEC)
+// Designate top-level assembler as 16bit only.
+# define ASM16(code) __ASM(code)
+// Designate top-level assembler as 32bit flat only.
+# define ASM32FLAT(code)
+// Compile time check for a given mode.
+# define ASSERT16() do { } while (0)
+# define ASSERT32SEG() __force_link_error__only_in_32bit_segmented()
+# define ASSERT32FLAT() __force_link_error__only_in_32bit_flat()
+#elif MODESEGMENT == 1
+# define VISIBLE16
+# define VISIBLE32FLAT
+# define VISIBLE32INIT
+# define VISIBLE32SEG __VISIBLE
+# define VAR16 __section(".discard.var16." UNIQSEC)
+# define VAR32SEG __section(".data32seg." UNIQSEC)
+# define VARLOW __section(".discard.varlow." UNIQSEC) __VISIBLE __weak
+# define VARFSEG __section(".discard.varfseg." UNIQSEC) __VISIBLE __weak
+# define VARFSEGFIXED(addr) __section(".discard.varfixed." UNIQSEC) __VISIBLE __weak
+# define VARVERIFY32INIT __section(".discard.varinit." UNIQSEC)
+# define ASM16(code)
+# define ASM32FLAT(code)
+# define ASSERT16() __force_link_error__only_in_16bit()
+# define ASSERT32SEG() do { } while (0)
+# define ASSERT32FLAT() __force_link_error__only_in_32bit_flat()
+#else
+# define VISIBLE16
+# define VISIBLE32FLAT __section(".text.runtime." UNIQSEC) __VISIBLE
+# define VISIBLE32INIT __section(".text.init." UNIQSEC) __VISIBLE
+# define VISIBLE32SEG
+# define VAR16 __section(".discard.var16." UNIQSEC)
+# define VAR32SEG __section(".discard.var32seg." UNIQSEC)
+# define VARLOW __section(".data.varlow." UNIQSEC) __VISIBLE __weak
+# define VARFSEG __section(".data.varfseg." UNIQSEC) __VISIBLE
+# define VARFSEGFIXED(addr) __section(".fixedaddr." __stringify(addr)) __VISIBLE __aligned(1)
+# define VARVERIFY32INIT __section(".data.varinit." UNIQSEC)
+# define ASM16(code)
+# define ASM32FLAT(code) __ASM(code)
+# define ASSERT16() __force_link_error__only_in_16bit()
+# define ASSERT32SEG() __force_link_error__only_in_32bit_segmented()
+# define ASSERT32FLAT() do { } while (0)
+#endif
+
+#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
+#define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
+#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
+#define DIV_ROUND_CLOSEST(x, divisor)({                 \
+            typeof(divisor) __divisor = divisor;        \
+            (((x) + ((__divisor) / 2)) / (__divisor));  \
+        })
+#define ALIGN(x,a)              __ALIGN_MASK(x,(typeof(x))(a)-1)
+#define __ALIGN_MASK(x,mask)    (((x)+(mask))&~(mask))
+#define ALIGN_DOWN(x,a)         ((x) & ~((typeof(x))(a)-1))
+#define container_of(ptr, type, member) ({                      \
+        const typeof( ((type *)0)->member ) *__mptr = (ptr);    \
+        (type *)( (char *)__mptr - offsetof(type,member) );})
+#define container_of_or_null(ptr, type, member) ({              \
+        const typeof( ((type *)0)->member ) *___mptr = (ptr);   \
+        ___mptr ? container_of(___mptr, type, member) : NULL; })
+
+#define likely(x)       __builtin_expect(!!(x), 1)
+#define unlikely(x)     __builtin_expect(!!(x), 0)
+
+#define NULL ((void*)0)
+
+#define __weak __attribute__((weak))
+#define __section(S) __attribute__((section(S)))
+
+#define PACKED __attribute__((packed))
+#define __aligned(x) __attribute__((aligned(x)))
+
+#define barrier() __asm__ __volatile__("": : :"memory")
+
+#define noinline __attribute__((noinline))
+#define __always_inline inline __attribute__((always_inline))
+#define __malloc __attribute__((__malloc__))
+#define __attribute_const __attribute__((__const__))
+
+#define __stringify_1(x)        #x
+#define __stringify(x)          __stringify_1(x)
+
+#endif // types.h