Add qemu 2.4.0

Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>

26 files changed, 696 insertions, 0 deletions

diff --git a/qemu/roms/ipxe/src/arch/x86_64/Makefile b/qemu/roms/ipxe/src/arch/x86_64/Makefile
new file mode 100644
index 000000000..b687f3407
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86_64/Makefile
@@ -0,0 +1,53 @@
+# Code size reduction.
+#
+CFLAGS		+= -fstrength-reduce -fomit-frame-pointer
+
+# Code size reduction.  gcc3 needs a different syntax to gcc2 if you
+# want to avoid spurious warnings.
+#
+CFLAGS		+= -falign-jumps=1 -falign-loops=1 -falign-functions=1
+
+# Use %rip-relative addressing wherever possible.
+#
+CFLAGS		+= -fpie
+
+# Force 64-bit code
+#
+CFLAGS		+= -m64
+ASFLAGS		+= --64
+LDFLAGS		+= -m elf_x86_64
+
+# EFI requires -fshort-wchar, and nothing else currently uses wchar_t
+#
+CFLAGS		+= -fshort-wchar
+
+# We need to undefine the default macro "i386" when compiling .S
+# files, otherwise ".arch i386" translates to ".arch 1"...
+#
+CFLAGS			+= -Ui386
+
+# Add -maccumulate-outgoing-args if required by this version of gcc
+#
+ifeq ($(CCTYPE),gcc)
+MS_ABI_TEST_CODE := extern void __attribute__ (( ms_abi )) ms_abi(); \
+		    void sysv_abi ( void ) { ms_abi(); }
+MS_ABI_TEST = $(ECHO) '$(MS_ABI_TEST_CODE)' | \
+	      $(CC) -m64 -mno-accumulate-outgoing-args -x c -c - -o /dev/null \
+		    >/dev/null 2>&1
+MS_ABI_FLAGS := $(shell $(MS_ABI_TEST) || $(ECHO) '-maccumulate-outgoing-args')
+WORKAROUND_CFLAGS += $(MS_ABI_FLAGS)
+endif
+
+# x86_64-specific directories containing source files
+#
+SRCDIRS		+= arch/x86_64/prefix
+
+# Include common x86 Makefile
+#
+MAKEDEPS	+= arch/x86/Makefile
+include arch/x86/Makefile
+
+# Include platform-specific Makefile
+#
+MAKEDEPS	+= arch/x86_64/Makefile.$(PLATFORM)
+include arch/x86_64/Makefile.$(PLATFORM)
diff --git a/qemu/roms/ipxe/src/arch/x86_64/Makefile.efi b/qemu/roms/ipxe/src/arch/x86_64/Makefile.efi
new file mode 100644
index 000000000..26b712780
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86_64/Makefile.efi
@@ -0,0 +1,14 @@
+# -*- makefile -*- : Force emacs to use Makefile mode
+
+# EFI probably doesn't guarantee us a red zone, so let's not rely on it.
+#
+CFLAGS		+= -mno-red-zone
+
+# Specify EFI image builder
+#
+ELF2EFI		= $(ELF2EFI64)
+
+# Include generic EFI Makefile
+#
+MAKEDEPS	+= arch/x86/Makefile.efi
+include arch/x86/Makefile.efi
diff --git a/qemu/roms/ipxe/src/arch/x86_64/Makefile.linux b/qemu/roms/ipxe/src/arch/x86_64/Makefile.linux
new file mode 100644
index 000000000..154f9d40d
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86_64/Makefile.linux
@@ -0,0 +1,6 @@
+LDSCRIPT = arch/x86_64/scripts/linux.lds
+
+SRCDIRS += arch/x86_64/core/linux
+
+MAKEDEPS += arch/x86/Makefile.linux
+include arch/x86/Makefile.linux
diff --git a/qemu/roms/ipxe/src/arch/x86_64/core/linux/linux_syscall.S b/qemu/roms/ipxe/src/arch/x86_64/core/linux/linux_syscall.S
new file mode 100644
index 000000000..d2805f94c
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86_64/core/linux/linux_syscall.S
@@ -0,0 +1,33 @@
+
+	.section ".data"
+	.globl linux_errno
+
+linux_errno:	.int 0
+
+	.section ".text"
+	.code64
+	.globl linux_syscall
+	.type  linux_syscall, @function
+
+linux_syscall:
+	movq	%rdi, %rax    // C arg1 -> syscall number
+	movq	%rsi, %rdi    // C arg2 -> syscall arg1
+	movq	%rdx, %rsi    // C arg3 -> syscall arg2
+	movq	%rcx, %rdx    // C arg4 -> syscall arg3
+	movq	%r8, %r10     // C arg5 -> syscall arg4
+	movq	%r9, %r8      // C arg6 -> syscall arg5
+	movq	8(%rsp), %r9  // C arg7 -> syscall arg6
+
+	syscall
+
+	cmpq	$-4095, %rax
+	jae	1f
+	ret
+
+1:
+	negq	%rax
+	movl	%eax, linux_errno
+	movq	$-1, %rax
+	ret
+
+	.size linux_syscall, . - linux_syscall
diff --git a/qemu/roms/ipxe/src/arch/x86_64/core/linux/linuxprefix.S b/qemu/roms/ipxe/src/arch/x86_64/core/linux/linuxprefix.S
new file mode 100644
index 000000000..ec8a9decd
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86_64/core/linux/linuxprefix.S
@@ -0,0 +1,25 @@
+#include <linux/unistd.h>
+
+	.section ".text"
+	.code64
+	.globl _linux_start
+	.type _linux_start, @function
+
+_linux_start:
+	xorq	%rbp, %rbp
+
+	popq	%rdi       // argc -> C arg1
+	movq	%rsp, %rsi // argv -> C arg2
+
+	andq	$~15, %rsp // 16-byte align the stack
+
+	call	save_args
+
+	/* Our main doesn't use any arguments */
+	call	main
+
+	movq	%rax, %rdi // rc -> syscall arg1
+	movq	$__NR_exit, %rax
+	syscall
+
+	.size _linux_start, . - _linux_start
diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/bits/byteswap.h b/qemu/roms/ipxe/src/arch/x86_64/include/bits/byteswap.h
new file mode 100644
index 000000000..2e472d98a
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86_64/include/bits/byteswap.h
@@ -0,0 +1,47 @@
+#ifndef _BITS_BYTESWAP_H
+#define _BITS_BYTESWAP_H
+
+/** @file
+ *
+ * Byte-order swapping functions
+ *
+ */
+
+#include <stdint.h>
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+static inline __attribute__ (( always_inline, const )) uint16_t
+__bswap_variable_16 ( uint16_t x ) {
+	__asm__ ( "xchgb %b0,%h0" : "=Q" ( x ) : "0" ( x ) );
+	return x;
+}
+
+static inline __attribute__ (( always_inline )) void
+__bswap_16s ( uint16_t *x ) {
+	__asm__ ( "rorw $8, %0" : "+m" ( *x ) );
+}
+
+static inline __attribute__ (( always_inline, const )) uint32_t
+__bswap_variable_32 ( uint32_t x ) {
+	__asm__ ( "bswapl %k0" : "=r" ( x ) : "0" ( x ) );
+	return x;
+}
+
+static inline __attribute__ (( always_inline )) void
+__bswap_32s ( uint32_t *x ) {
+	__asm__ ( "bswapl %k0" : "=r" ( *x ) : "0" ( *x ) );
+}
+
+static inline __attribute__ (( always_inline, const )) uint64_t
+__bswap_variable_64 ( uint64_t x ) {
+	__asm__ ( "bswapq %q0" : "=r" ( x ) : "0" ( x ) );
+	return x;
+}
+
+static inline __attribute__ (( always_inline )) void
+__bswap_64s ( uint64_t *x ) {
+	__asm__ ( "bswapq %q0" : "=r" ( *x ) : "0" ( *x ) );
+}
+
+#endif /* _BITS_BYTESWAP_H */
diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/bits/compiler.h b/qemu/roms/ipxe/src/arch/x86_64/include/bits/compiler.h
new file mode 100644
index 000000000..51a7eaae2
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86_64/include/bits/compiler.h
@@ -0,0 +1,14 @@
+#ifndef _BITS_COMPILER_H
+#define _BITS_COMPILER_H
+
+#ifndef ASSEMBLY
+
+/** Declare a function with standard calling conventions */
+#define __asmcall __attribute__ (( regparm(0) ))
+
+/** Declare a function with libgcc implicit linkage */
+#define __libgcc
+
+#endif /* ASSEMBLY */
+
+#endif /* _BITS_COMPILER_H */
diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/bits/endian.h b/qemu/roms/ipxe/src/arch/x86_64/include/bits/endian.h
new file mode 100644
index 000000000..413e702db
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86_64/include/bits/endian.h
@@ -0,0 +1,6 @@
+#ifndef ETHERBOOT_BITS_ENDIAN_H
+#define ETHERBOOT_BITS_ENDIAN_H
+
+#define __BYTE_ORDER __LITTLE_ENDIAN
+
+#endif /* ETHERBOOT_BITS_ENDIAN_H */
diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/bits/entropy.h b/qemu/roms/ipxe/src/arch/x86_64/include/bits/entropy.h
new file mode 100644
index 000000000..9c64c833b
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86_64/include/bits/entropy.h
@@ -0,0 +1,12 @@
+#ifndef _BITS_ENTROPY_H
+#define _BITS_ENTROPY_H
+
+/** @file
+ *
+ * x86_64-specific entropy API implementations
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#endif /* _BITS_ENTROPY_H */
diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/bits/linux_api.h b/qemu/roms/ipxe/src/arch/x86_64/include/bits/linux_api.h
new file mode 100644
index 000000000..589fb5808
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86_64/include/bits/linux_api.h
@@ -0,0 +1,6 @@
+#ifndef _X86_64_LINUX_API_H
+#define _X86_64_LINUX_API_H
+
+#define __SYSCALL_mmap __NR_mmap
+
+#endif /* _X86_64_LINUX_API_H */
diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/bits/nap.h b/qemu/roms/ipxe/src/arch/x86_64/include/bits/nap.h
new file mode 100644
index 000000000..8b42c0a4a
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86_64/include/bits/nap.h
@@ -0,0 +1,12 @@
+#ifndef _BITS_NAP_H
+#define _BITS_NAP_H
+
+/** @file
+ *
+ * x86_64-specific CPU sleeping API implementations
+ *
+ */
+
+#include <ipxe/efi/efix86_nap.h>
+
+#endif /* _BITS_MAP_H */
diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/bits/profile.h b/qemu/roms/ipxe/src/arch/x86_64/include/bits/profile.h
new file mode 100644
index 000000000..6fc16d84b
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86_64/include/bits/profile.h
@@ -0,0 +1,29 @@
+#ifndef _BITS_PROFILE_H
+#define _BITS_PROFILE_H
+
+/** @file
+ *
+ * Profiling
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdint.h>
+
+/**
+ * Get profiling timestamp
+ *
+ * @ret timestamp	Timestamp
+ */
+static inline __attribute__ (( always_inline )) uint64_t
+profile_timestamp ( void ) {
+	uint32_t eax;
+	uint32_t edx;
+
+	/* Read timestamp counter */
+	__asm__ __volatile__ ( "rdtsc" : "=a" ( eax ), "=d" ( edx ) );
+	return ( ( ( ( uint64_t ) edx ) << 32 ) | eax );
+}
+
+#endif /* _BITS_PROFILE_H */
diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/bits/reboot.h b/qemu/roms/ipxe/src/arch/x86_64/include/bits/reboot.h
new file mode 100644
index 000000000..f1bce0540
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86_64/include/bits/reboot.h
@@ -0,0 +1,12 @@
+#ifndef _BITS_REBOOT_H
+#define _BITS_REBOOT_H
+
+/** @file
+ *
+ * x86_64-specific reboot API implementations
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#endif /* _BITS_REBOOT_H */
diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/bits/sanboot.h b/qemu/roms/ipxe/src/arch/x86_64/include/bits/sanboot.h
new file mode 100644
index 000000000..d33d03cbe
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86_64/include/bits/sanboot.h
@@ -0,0 +1,12 @@
+#ifndef _BITS_SANBOOT_H
+#define _BITS_SANBOOT_H
+
+/** @file
+ *
+ * x86_64-specific sanboot API implementations
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#endif /* _BITS_SANBOOT_H */
diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/bits/smbios.h b/qemu/roms/ipxe/src/arch/x86_64/include/bits/smbios.h
new file mode 100644
index 000000000..2f0118d02
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86_64/include/bits/smbios.h
@@ -0,0 +1,10 @@
+#ifndef _BITS_SMBIOS_H
+#define _BITS_SMBIOS_H
+
+/** @file
+ *
+ * i386-specific SMBIOS API implementations
+ *
+ */
+
+#endif /* _BITS_SMBIOS_H */
diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/bits/stdint.h b/qemu/roms/ipxe/src/arch/x86_64/include/bits/stdint.h
new file mode 100644
index 000000000..9eb72e9c4
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86_64/include/bits/stdint.h
@@ -0,0 +1,21 @@
+#ifndef _BITS_STDINT_H
+#define _BITS_STDINT_H
+
+typedef __SIZE_TYPE__		size_t;
+typedef signed long		ssize_t;
+typedef signed long		off_t;
+
+typedef unsigned char		uint8_t;
+typedef unsigned short		uint16_t;
+typedef unsigned int		uint32_t;
+typedef unsigned long long	uint64_t;
+
+typedef signed char		int8_t;
+typedef signed short		int16_t;
+typedef signed int		int32_t;
+typedef signed long long	int64_t;
+
+typedef unsigned long		physaddr_t;
+typedef unsigned long		intptr_t;
+
+#endif /* _BITS_STDINT_H */
diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/bits/strings.h b/qemu/roms/ipxe/src/arch/x86_64/include/bits/strings.h
new file mode 100644
index 000000000..6ee99a500
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86_64/include/bits/strings.h
@@ -0,0 +1,42 @@
+#ifndef _BITS_STRINGS_H
+#define _BITS_STRINGS_H
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+/**
+ * Find last (i.e. most significant) set bit
+ *
+ * @v value		Value
+ * @ret msb		Most significant bit set in value (LSB=1), or zero
+ */
+static inline __attribute__ (( always_inline )) int __flsll ( long long value ){
+	long long msb_minus_one;
+
+	/* If the input value is zero, the BSR instruction returns
+	 * ZF=1 and leaves an undefined value in the output register.
+	 * Perform this check in C rather than asm so that it can be
+	 * omitted in cases where the compiler is able to prove that
+	 * the input is non-zero.
+	 */
+	if ( value ) {
+		__asm__ ( "bsrq %1, %0"
+			  : "=r" ( msb_minus_one )
+			  : "rm" ( value ) );
+		return ( msb_minus_one + 1 );
+	} else {
+		return 0;
+	}
+}
+
+/**
+ * Find last (i.e. most significant) set bit
+ *
+ * @v value		Value
+ * @ret msb		Most significant bit set in value (LSB=1), or zero
+ */
+static inline __attribute__ (( always_inline )) int __flsl ( long value ) {
+
+	return __flsll ( value );
+}
+
+#endif /* _BITS_STRINGS_H */
diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/bits/time.h b/qemu/roms/ipxe/src/arch/x86_64/include/bits/time.h
new file mode 100644
index 000000000..59b355359
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86_64/include/bits/time.h
@@ -0,0 +1,12 @@
+#ifndef _BITS_TIME_H
+#define _BITS_TIME_H
+
+/** @file
+ *
+ * x86_64-specific time API implementations
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#endif /* _BITS_TIME_H */
diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/bits/timer.h b/qemu/roms/ipxe/src/arch/x86_64/include/bits/timer.h
new file mode 100644
index 000000000..dfa6c270c
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86_64/include/bits/timer.h
@@ -0,0 +1,10 @@
+#ifndef _BITS_TIMER_H
+#define _BITS_TIMER_H
+
+/** @file
+ *
+ * x86_64-specific timer API implementations
+ *
+ */
+
+#endif /* _BITS_TIMER_H */
diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/bits/uaccess.h b/qemu/roms/ipxe/src/arch/x86_64/include/bits/uaccess.h
new file mode 100644
index 000000000..455829242
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86_64/include/bits/uaccess.h
@@ -0,0 +1,10 @@
+#ifndef _BITS_UACCESS_H
+#define _BITS_UACCESS_H
+
+/** @file
+ *
+ * x86_64-specific user access API implementations
+ *
+ */
+
+#endif /* _BITS_UACCESS_H */
diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/bits/umalloc.h b/qemu/roms/ipxe/src/arch/x86_64/include/bits/umalloc.h
new file mode 100644
index 000000000..12bf949d1
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86_64/include/bits/umalloc.h
@@ -0,0 +1,10 @@
+#ifndef _BITS_UMALLOC_H
+#define _BITS_UMALLOC_H
+
+/** @file
+ *
+ * x86_64-specific user memory allocation API implementations
+ *
+ */
+
+#endif /* _BITS_UMALLOC_H */
diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/efi/ipxe/dhcp_arch.h b/qemu/roms/ipxe/src/arch/x86_64/include/efi/ipxe/dhcp_arch.h
new file mode 100644
index 000000000..9a4790fdc
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86_64/include/efi/ipxe/dhcp_arch.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2010 VMware, Inc.  All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef _DHCP_ARCH_H
+#define _DHCP_ARCH_H
+
+/** @file
+ *
+ * Architecture-specific DHCP options
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <ipxe/dhcp.h>
+
+#define DHCP_ARCH_VENDOR_CLASS_ID \
+	DHCP_STRING ( 'P', 'X', 'E', 'C', 'l', 'i', 'e', 'n', 't', ':',      \
+		      'A', 'r', 'c', 'h', ':', '0', '0', '0', '0', '9', ':', \
+		      'U', 'N', 'D', 'I', ':', '0', '0', '3', '0', '1', '0' )
+
+#define DHCP_ARCH_CLIENT_ARCHITECTURE \
+	DHCP_WORD ( DHCP_CLIENT_ARCHITECTURE_X86_64 )
+
+#define DHCP_ARCH_CLIENT_NDI DHCP_OPTION ( 1 /* UNDI */ , 3, 10 /* v3.10 */ )
+
+#endif
diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/gdbmach.h b/qemu/roms/ipxe/src/arch/x86_64/include/gdbmach.h
new file mode 100644
index 000000000..6dadbbdd3
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86_64/include/gdbmach.h
@@ -0,0 +1,53 @@
+#ifndef GDBMACH_H
+#define GDBMACH_H
+
+/** @file
+ *
+ * GDB architecture specifics
+ *
+ * This file declares functions for manipulating the machine state and
+ * debugging context.
+ *
+ */
+
+#include <stdint.h>
+
+typedef unsigned long gdbreg_t;
+
+/* The register snapshot, this must be in sync with interrupt handler and the
+ * GDB protocol. */
+enum {
+	// STUB: don't expect this to work!
+	GDBMACH_EIP,
+	GDBMACH_EFLAGS,
+	GDBMACH_NREGS,
+	GDBMACH_SIZEOF_REGS = GDBMACH_NREGS * sizeof ( gdbreg_t )
+};
+
+/* Breakpoint types */
+enum {
+	GDBMACH_BPMEM,
+	GDBMACH_BPHW,
+	GDBMACH_WATCH,
+	GDBMACH_RWATCH,
+	GDBMACH_AWATCH,
+};
+
+static inline void gdbmach_set_pc ( gdbreg_t *regs, gdbreg_t pc ) {
+	regs [ GDBMACH_EIP ] = pc;
+}
+
+static inline void gdbmach_set_single_step ( gdbreg_t *regs, int step ) {
+	regs [ GDBMACH_EFLAGS ] &= ~( 1 << 8 ); /* Trace Flag (TF) */
+	regs [ GDBMACH_EFLAGS ] |= ( step << 8 );
+}
+
+static inline void gdbmach_breakpoint ( void ) {
+	__asm__ __volatile__ ( "int $3\n" );
+}
+
+extern int gdbmach_set_breakpoint ( int type, unsigned long addr, size_t len, int enable );
+
+extern void gdbmach_init ( void );
+
+#endif /* GDBMACH_H */
diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/ipxe/msr.h b/qemu/roms/ipxe/src/arch/x86_64/include/ipxe/msr.h
new file mode 100644
index 000000000..a5816ac35
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86_64/include/ipxe/msr.h
@@ -0,0 +1,43 @@
+#ifndef _IPXE_MSR_H
+#define _IPXE_MSR_H
+
+/** @file
+ *
+ * Model-specific registers
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+/**
+ * Read model-specific register
+ *
+ * @v msr		Model-specific register
+ * @ret value		Value
+ */
+static inline __attribute__ (( always_inline )) uint64_t
+rdmsr ( unsigned int msr ) {
+	uint32_t high;
+	uint32_t low;
+
+	__asm__ __volatile__ ( "rdmsr" :
+			       "=d" ( high ), "=a" ( low ) : "c" ( msr ) );
+	return ( ( ( ( uint64_t ) high ) << 32 ) | low );
+}
+
+/**
+ * Write model-specific register
+ *
+ * @v msr		Model-specific register
+ * @v value		Value
+ */
+static inline __attribute__ (( always_inline )) void
+wrmsr ( unsigned int msr, uint64_t value ) {
+	uint32_t high = ( value >> 32 );
+	uint32_t low = ( value >> 0 );
+
+	__asm__ __volatile__ ( "wrmsr" : :
+			       "c" ( msr ), "d" ( high ), "a" ( low ) );
+}
+
+#endif /* _IPXE_MSR_H */
diff --git a/qemu/roms/ipxe/src/arch/x86_64/include/limits.h b/qemu/roms/ipxe/src/arch/x86_64/include/limits.h
new file mode 100644
index 000000000..8cf87b471
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86_64/include/limits.h
@@ -0,0 +1,59 @@
+#ifndef LIMITS_H
+#define LIMITS_H	1
+
+/* Number of bits in a `char' */
+#define CHAR_BIT	8
+
+/* Minimum and maximum values a `signed char' can hold */
+#define SCHAR_MIN	(-128)
+#define SCHAR_MAX	127
+
+/* Maximum value an `unsigned char' can hold. (Minimum is 0.) */
+#define UCHAR_MAX	255
+
+/* Minimum and maximum values a `char' can hold */
+#define CHAR_MIN	SCHAR_MIN
+#define CHAR_MAX	SCHAR_MAX
+
+/* Minimum and maximum values a `signed short int' can hold */
+#define SHRT_MIN	(-32768)
+#define SHRT_MAX	32767
+
+/* Maximum value an `unsigned short' can hold. (Minimum is 0.) */
+#define USHRT_MAX	65535
+
+
+/* Minimum and maximum values a `signed int' can hold */
+#define INT_MIN		(-INT_MAX - 1)
+#define INT_MAX		2147483647
+
+/* Maximum value an `unsigned int' can hold. (Minimum is 0.) */
+#define UINT_MAX	4294967295U
+
+
+/* Minimum and maximum values a `signed int' can hold */
+#define INT_MAX		2147483647
+#define INT_MIN		(-INT_MAX - 1)
+
+
+/* Maximum value an `unsigned int' can hold. (Minimum is 0.) */
+#define UINT_MAX	4294967295U
+
+
+/* Minimum and maximum values a `signed long' can hold */
+#define LONG_MAX	9223372036854775807L
+#define LONG_MIN	(-LONG_MAX - 1L)
+
+/* Maximum value an `unsigned long' can hold. (Minimum is 0.) */
+#define ULONG_MAX	18446744073709551615UL
+
+/* Minimum and maximum values a `signed long long' can hold */
+#define LLONG_MAX	9223372036854775807LL
+#define LLONG_MIN	(-LONG_MAX - 1LL)
+
+
+/* Maximum value an `unsigned long long' can hold. (Minimum is 0.) */
+#define ULLONG_MAX	18446744073709551615ULL
+
+
+#endif /* LIMITS_H */
diff --git a/qemu/roms/ipxe/src/arch/x86_64/scripts/linux.lds b/qemu/roms/ipxe/src/arch/x86_64/scripts/linux.lds
new file mode 100644
index 000000000..47db21745
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/x86_64/scripts/linux.lds
@@ -0,0 +1,104 @@
+/* -*- sh -*- */
+
+/*
+ * Linker script for x86_64 Linux images
+ *
+ */
+
+OUTPUT_FORMAT ( "elf64-x86-64", "elf64-x86-64", "elf64-x86-64" )
+OUTPUT_ARCH ( i386:x86-64 )
+
+SECTIONS {
+	_max_align = 32;
+
+	. = 0x400000;
+
+	/*
+	 * The text section
+	 *
+	 */
+
+	. = ALIGN ( _max_align );
+	.text : {
+		_text = .;
+		*(.text)
+		*(.text.*)
+		_etext = .;
+	}
+
+	/*
+	 * The rodata section
+	 *
+	 */
+
+	. = ALIGN ( _max_align );
+	.rodata : {
+		_rodata = .;
+		*(.rodata)
+		*(.rodata.*)
+		_erodata = .;
+	}
+
+	/*
+	 * The data section
+	 *
+	 * Adjust the address for the data segment.  We want to adjust up to
+	 * the same address within the page on the next page up.
+	 */
+
+	. = ALIGN (CONSTANT (MAXPAGESIZE)) - ((CONSTANT (MAXPAGESIZE) - .) & (CONSTANT (MAXPAGESIZE) - 1));
+	. = DATA_SEGMENT_ALIGN (CONSTANT (MAXPAGESIZE), CONSTANT (COMMONPAGESIZE));
+	.data : {
+		_data = .;
+		*(.data)
+		*(.data.*)
+		KEEP(*(SORT(.tbl.*)))
+		KEEP(*(.provided))
+		KEEP(*(.provided.*))
+		_edata = .;
+	}
+
+	/*
+	 * The bss section
+	 *
+	 */
+
+	. = ALIGN ( _max_align );
+	.bss : {
+		_bss = .;
+		*(.bss)
+		*(.bss.*)
+		*(COMMON)
+		_ebss = .;
+	}
+
+	/*
+	 * Weak symbols that need zero values if not otherwise defined
+	 *
+	 */
+
+	.weak 0x0 : {
+		_weak = .;
+		*(.weak)
+		*(.weak.*)
+		_eweak = .;
+	}
+	_assert = ASSERT ( ( _weak == _eweak ), ".weak is non-zero length" );
+
+	/*
+	 * Dispose of the comment and note sections to make the link map
+	 * easier to read
+	 *
+	 */
+
+	/DISCARD/ : {
+		*(.comment)
+		*(.comment.*)
+		*(.note)
+		*(.note.*)
+		*(.rel)
+		*(.rel.*)
+		*(.discard)
+		*(.discard.*)
+	}
+}