[v17,23/23] selftests/x86: Add a selftest for SGX
diff mbox series

Message ID 20181116010412.23967-24-jarkko.sakkinen@linux.intel.com
State New
Headers show
Series
  • [v17,01/23] x86/sgx: Update MAINTAINERS
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Commit Message

Jarkko Sakkinen Nov. 16, 2018, 1:01 a.m. UTC
Add a selftest for SGX. It is a trivial test where a simple enclave
copies one 64-bit word of memory between two memory locations given to
the enclave as arguments.

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
---
 tools/testing/selftests/x86/Makefile          |  10 +
 tools/testing/selftests/x86/sgx/Makefile      |  47 ++
 tools/testing/selftests/x86/sgx/encl.c        |  20 +
 tools/testing/selftests/x86/sgx/encl.lds      |  33 ++
 .../selftests/x86/sgx/encl_bootstrap.S        |  94 ++++
 tools/testing/selftests/x86/sgx/encl_piggy.S  |  16 +
 tools/testing/selftests/x86/sgx/encl_piggy.h  |  13 +
 .../testing/selftests/x86/sgx/sgx-selftest.c  | 149 ++++++
 tools/testing/selftests/x86/sgx/sgx_arch.h    | 109 ++++
 tools/testing/selftests/x86/sgx/sgx_call.S    |  20 +
 tools/testing/selftests/x86/sgx/sgx_uapi.h    | 100 ++++
 tools/testing/selftests/x86/sgx/sgxsign.c     | 503 ++++++++++++++++++
 .../testing/selftests/x86/sgx/signing_key.pem |  39 ++
 13 files changed, 1153 insertions(+)
 create mode 100644 tools/testing/selftests/x86/sgx/Makefile
 create mode 100644 tools/testing/selftests/x86/sgx/encl.c
 create mode 100644 tools/testing/selftests/x86/sgx/encl.lds
 create mode 100644 tools/testing/selftests/x86/sgx/encl_bootstrap.S
 create mode 100644 tools/testing/selftests/x86/sgx/encl_piggy.S
 create mode 100644 tools/testing/selftests/x86/sgx/encl_piggy.h
 create mode 100644 tools/testing/selftests/x86/sgx/sgx-selftest.c
 create mode 100644 tools/testing/selftests/x86/sgx/sgx_arch.h
 create mode 100644 tools/testing/selftests/x86/sgx/sgx_call.S
 create mode 100644 tools/testing/selftests/x86/sgx/sgx_uapi.h
 create mode 100644 tools/testing/selftests/x86/sgx/sgxsign.c
 create mode 100644 tools/testing/selftests/x86/sgx/signing_key.pem

Patch
diff mbox series

diff --git a/tools/testing/selftests/x86/Makefile b/tools/testing/selftests/x86/Makefile
index 186520198de7..4fc9a42f56ea 100644
--- a/tools/testing/selftests/x86/Makefile
+++ b/tools/testing/selftests/x86/Makefile
@@ -1,4 +1,7 @@ 
 # SPDX-License-Identifier: GPL-2.0
+
+SUBDIRS_64 := sgx
+
 all:
 
 include ../lib.mk
@@ -67,6 +70,13 @@  all_32: $(BINARIES_32)
 
 all_64: $(BINARIES_64)
 
+all_64: $(SUBDIRS_64)
+	@for DIR in $(SUBDIRS_64); do			\
+		BUILD_TARGET=$(OUTPUT)/$$DIR;		\
+		mkdir $$BUILD_TARGET  -p;		\
+		make OUTPUT=$$BUILD_TARGET -C $$DIR $@;	\
+	done
+
 EXTRA_CLEAN := $(BINARIES_32) $(BINARIES_64)
 
 $(BINARIES_32): $(OUTPUT)/%_32: %.c
diff --git a/tools/testing/selftests/x86/sgx/Makefile b/tools/testing/selftests/x86/sgx/Makefile
new file mode 100644
index 000000000000..04004d244de4
--- /dev/null
+++ b/tools/testing/selftests/x86/sgx/Makefile
@@ -0,0 +1,47 @@ 
+top_srcdir = ../../../../..
+
+include ../../lib.mk
+
+HOST_CFLAGS := -Wall -Werror -g
+ENCL_CFLAGS := -Wall -Werror -static -nostdlib -nostartfiles -fPIC \
+	       -fno-stack-protector -mrdrnd
+
+TEST_CUSTOM_PROGS := $(OUTPUT)/sgx-selftest
+all_64: $(TEST_CUSTOM_PROGS)
+
+$(TEST_CUSTOM_PROGS): $(OUTPUT)/sgx-selftest.o $(OUTPUT)/sgx_call.o \
+		      $(OUTPUT)/encl_piggy.o
+	$(CC) $(HOST_CFLAGS) -o $@ $^
+
+$(OUTPUT)/sgx-selftest.o: sgx-selftest.c
+	$(CC) $(HOST_CFLAGS) -c $< -o $@
+
+$(OUTPUT)/sgx_call.o: sgx_call.S
+	$(CC) $(HOST_CFLAGS) -c $< -o $@
+
+$(OUTPUT)/encl_piggy.o: $(OUTPUT)/encl.bin $(OUTPUT)/encl.ss
+
+$(OUTPUT)/encl.bin: $(OUTPUT)/encl.elf $(OUTPUT)/sgxsign
+	objcopy --remove-section=.got.plt -O binary $< $@
+
+$(OUTPUT)/encl.elf: $(OUTPUT)/encl.o $(OUTPUT)/encl_bootstrap.o
+	$(CC) $(ENCL_CFLAGS) -T encl.lds -o $@ $^
+
+$(OUTPUT)/encl.o: encl.c
+	$(CC) $(ENCL_CFLAGS) -c $< -o $@
+
+$(OUTPUT)/encl_bootstrap.o: encl_bootstrap.S
+	$(CC) $(ENCL_CFLAGS) -c $< -o $@
+
+$(OUTPUT)/encl.ss: $(OUTPUT)/encl.bin  $(OUTPUT)/sgxsign
+	$(OUTPUT)/sgxsign signing_key.pem $(OUTPUT)/encl.bin $(OUTPUT)/encl.ss
+
+$(OUTPUT)/sgxsign: sgxsign.c
+	$(CC) -o $@ $< -lcrypto
+
+EXTRA_CLEAN := $(OUTPUT)/sgx-selftest $(OUTPUT)/sgx-selftest.o \
+	       $(OUTPUT)/sgx_call.o $(OUTPUT)/encl.bin $(OUTPUT)/encl.ss \
+	       $(OUTPUT)/encl.elf $(OUTPUT)/encl.o $(OUTPUT)/encl_bootstrap.o \
+	       $(OUTPUT)/sgxsign
+
+.PHONY: clean
diff --git a/tools/testing/selftests/x86/sgx/encl.c b/tools/testing/selftests/x86/sgx/encl.c
new file mode 100644
index 000000000000..eb6aa318d3f1
--- /dev/null
+++ b/tools/testing/selftests/x86/sgx/encl.c
@@ -0,0 +1,20 @@ 
+// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
+// Copyright(c) 2016-18 Intel Corporation.
+
+#include <stddef.h>
+#include "sgx_arch.h"
+
+static void *memcpy(void *dest, const void *src, size_t n)
+{
+	size_t i;
+
+	for (i = 0; i < n; i++)
+		((char *)dest)[i] = ((char *)src)[i];
+
+	return dest;
+}
+
+void encl_body(void *rdi, void *rsi)
+{
+	memcpy(rsi, rdi, 8);
+}
diff --git a/tools/testing/selftests/x86/sgx/encl.lds b/tools/testing/selftests/x86/sgx/encl.lds
new file mode 100644
index 000000000000..2ee01ac3ec79
--- /dev/null
+++ b/tools/testing/selftests/x86/sgx/encl.lds
@@ -0,0 +1,33 @@ 
+OUTPUT_FORMAT(elf64-x86-64)
+
+SECTIONS
+{
+	. = 0;
+	.tcs : {
+		*(.tcs*)
+	}
+
+	. = ALIGN(4096);
+	.text : {
+		*(.text*)
+		*(.rodata*)
+	}
+
+	. = ALIGN(4096);
+	.data : {
+		*(.data*)
+	}
+
+	/DISCARD/ : {
+		*(.data*)
+		*(.comment*)
+		*(.note*)
+		*(.debug*)
+		*(.eh_frame*)
+	}
+}
+
+ASSERT(!DEFINED(.altinstructions), "ALTERNATIVES are not supported in enclaves")
+ASSERT(!DEFINED(.altinstr_replacement), "ALTERNATIVES are not supported in enclaves")
+ASSERT(!DEFINED(.discard.retpoline_safe), "RETPOLINE ALTERNATIVES are not supported in enclaves")
+ASSERT(!DEFINED(.discard.nospec), "RETPOLINE ALTERNATIVES are not supported in enclaves")
diff --git a/tools/testing/selftests/x86/sgx/encl_bootstrap.S b/tools/testing/selftests/x86/sgx/encl_bootstrap.S
new file mode 100644
index 000000000000..d07f970ccdf9
--- /dev/null
+++ b/tools/testing/selftests/x86/sgx/encl_bootstrap.S
@@ -0,0 +1,94 @@ 
+/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
+/*
+ * Copyright(c) 2016-18 Intel Corporation.
+ */
+
+	.macro ENCLU
+	.byte 0x0f, 0x01, 0xd7
+	.endm
+
+	.section ".tcs", "a"
+	.balign	4096
+
+	.fill	1, 8, 0			# STATE (set by CPU)
+	.fill	1, 8, 0			# FLAGS
+	.quad	encl_ssa		# OSSA
+	.fill	1, 4, 0			# CSSA (set by CPU)
+	.fill	1, 4, 1			# NSSA
+	.quad	encl_entry		# OENTRY
+	.fill	1, 8, 0			# AEP (set by EENTER and ERESUME)
+	.fill	1, 8, 0			# OFSBASE
+	.fill	1, 8, 0			# OGSBASE
+	.fill	1, 4, 0xFFFFFFFF 	# FSLIMIT
+	.fill	1, 4, 0xFFFFFFFF	# GSLIMIT
+	.fill	4024, 1, 0		# Reserved
+
+	.text
+
+encl_entry:
+	# RBX contains the base address for TCS, which is also the first address
+	# inside the enclave. By adding the value of le_stack_end to it, we get
+	# the absolute address for the stack.
+	lea	(encl_stack)(%rbx), %rax
+	xchg	%rsp, %rax
+	push	%rax
+
+	push	%rcx # push the address after EENTER
+	push	%rbx # push the enclave base address
+
+	call	encl_body
+
+	pop	%rbx # pop the enclave base address
+
+	# Restore XSAVE registers to a synthetic state.
+	mov     $0xFFFFFFFF, %rax
+	mov     $0xFFFFFFFF, %rdx
+	lea	(xsave_area)(%rbx), %rdi
+	fxrstor	(%rdi)
+
+	# Clear GPRs.
+	xor     %rcx, %rcx
+	xor     %rdx, %rdx
+	xor     %rdi, %rdi
+	xor     %rsi, %rsi
+	xor     %r8, %r8
+	xor     %r9, %r9
+	xor     %r10, %r10
+	xor     %r11, %r11
+	xor     %r12, %r12
+	xor     %r13, %r13
+	xor     %r14, %r14
+	xor     %r15, %r15
+
+	# Reset status flags.
+	add     %rdx, %rdx # OF = SF = AF = CF = 0; ZF = PF = 1
+
+	# Prepare EEXIT target by popping the address of the instruction after
+	# EENTER to RBX.
+	pop	%rbx
+
+	# Restore the caller stack.
+	pop	%rax
+	mov	%rax, %rsp
+
+	# EEXIT
+	mov	$4, %rax
+	enclu
+
+	.section ".data", "aw"
+
+encl_ssa:
+	.space 4096
+
+xsave_area:
+	.fill	1, 4, 0x037F		# FCW
+	.fill	5, 4, 0
+	.fill	1, 4, 0x1F80		# MXCSR
+	.fill	1, 4, 0xFFFF		# MXCSR_MASK
+	.fill	123, 4, 0
+	.fill	1, 4, 0x80000000	# XCOMP_BV[63] = 1, compaction mode
+	.fill	12, 4, 0
+
+	.balign 4096
+	.space 8192
+encl_stack:
diff --git a/tools/testing/selftests/x86/sgx/encl_piggy.S b/tools/testing/selftests/x86/sgx/encl_piggy.S
new file mode 100644
index 000000000000..c5d5787a7c89
--- /dev/null
+++ b/tools/testing/selftests/x86/sgx/encl_piggy.S
@@ -0,0 +1,16 @@ 
+/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
+/*
+ * Copyright(c) 2016-18 Intel Corporation.
+ */
+
+	.section ".rodata", "a"
+
+encl_bin:
+	.globl encl_bin
+	.incbin	"encl.bin"
+encl_bin_end:
+	.globl encl_bin_end
+
+encl_ss:
+	.globl encl_ss
+	.incbin	"encl.ss"
diff --git a/tools/testing/selftests/x86/sgx/encl_piggy.h b/tools/testing/selftests/x86/sgx/encl_piggy.h
new file mode 100644
index 000000000000..6692d3a8cee0
--- /dev/null
+++ b/tools/testing/selftests/x86/sgx/encl_piggy.h
@@ -0,0 +1,13 @@ 
+/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
+/*
+ * Copyright(c) 2016-18 Intel Corporation.
+ */
+
+#ifndef ENCL_PIGGY_H
+#define ENCL_PIGGY_H
+
+extern unsigned char encl_bin[];
+extern unsigned char encl_bin_end[];
+extern unsigned char encl_ss[];
+
+#endif /* ENCL_PIGGY_H */
diff --git a/tools/testing/selftests/x86/sgx/sgx-selftest.c b/tools/testing/selftests/x86/sgx/sgx-selftest.c
new file mode 100644
index 000000000000..dec649584752
--- /dev/null
+++ b/tools/testing/selftests/x86/sgx/sgx-selftest.c
@@ -0,0 +1,149 @@ 
+// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
+// Copyright(c) 2016-18 Intel Corporation.
+
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include "encl_piggy.h"
+#include "sgx_arch.h"
+#include "sgx_uapi.h"
+
+static const uint64_t MAGIC = 0x1122334455667788ULL;
+
+static bool encl_create(int dev_fd, unsigned long bin_size,
+			struct sgx_secs *secs)
+{
+	struct sgx_enclave_create ioc;
+	void *base;
+	int rc;
+
+	memset(secs, 0, sizeof(*secs));
+	secs->ssaframesize = 1;
+#ifndef CONFIG_EINITTOKENKEY
+	secs->attributes = SGX_ATTR_MODE64BIT;
+#else
+	secs->attributes = SGX_ATTR_MODE64BIT | SGX_ATTR_EINITTOKENKEY;
+#endif
+	secs->xfrm = 3;
+
+	for (secs->size = 4096; secs->size < bin_size; )
+		secs->size <<= 1;
+
+	base = mmap(NULL, secs->size, PROT_READ | PROT_WRITE | PROT_EXEC,
+		    MAP_SHARED, dev_fd, 0);
+	if (base == MAP_FAILED) {
+		perror("mmap");
+		return false;
+	}
+
+	secs->base = (uint64_t)base;
+
+	ioc.src = (unsigned long)secs;
+	rc = ioctl(dev_fd, SGX_IOC_ENCLAVE_CREATE, &ioc);
+	if (rc) {
+		fprintf(stderr, "ECREATE failed rc=%d.\n", rc);
+		munmap(base, secs->size);
+		return false;
+	}
+
+	return true;
+}
+
+static bool encl_add_page(int dev_fd, unsigned long addr, void *data,
+			  uint64_t flags)
+{
+	struct sgx_enclave_add_page ioc;
+	struct sgx_secinfo secinfo;
+	int rc;
+
+	memset(&secinfo, 0, sizeof(secinfo));
+	secinfo.flags = flags;
+
+	ioc.secinfo = (unsigned long)&secinfo;
+	ioc.mrmask = 0xFFFF;
+	ioc.addr = addr;
+	ioc.src = (uint64_t)data;
+
+	rc = ioctl(dev_fd, SGX_IOC_ENCLAVE_ADD_PAGE, &ioc);
+	if (rc) {
+		fprintf(stderr, "EADD failed rc=%d.\n", rc);
+		return false;
+	}
+
+	return true;
+}
+
+static bool encl_load(struct sgx_secs *secs, unsigned long bin_size)
+{
+	struct sgx_enclave_init ioc;
+	uint64_t offset;
+	uint64_t flags;
+	int dev_fd;
+	int rc;
+
+	dev_fd = open("/dev/sgx", O_RDWR);
+	if (dev_fd < 0) {
+		fprintf(stderr, "Unable to open /dev/sgx\n");
+		return false;
+	}
+
+	if (!encl_create(dev_fd, bin_size, secs))
+		goto out_dev_fd;
+
+	for (offset = 0; offset < bin_size; offset += 0x1000) {
+		if (!offset)
+			flags = SGX_SECINFO_TCS;
+		else
+			flags = SGX_SECINFO_REG | SGX_SECINFO_R |
+				SGX_SECINFO_W | SGX_SECINFO_X;
+
+		if (!encl_add_page(dev_fd, secs->base + offset,
+				   encl_bin + offset, flags))
+			goto out_map;
+	}
+
+	ioc.addr = secs->base;
+	ioc.sigstruct = (uint64_t)encl_ss;
+	rc = ioctl(dev_fd, SGX_IOC_ENCLAVE_INIT, &ioc);
+	if (rc)
+		goto out_map;
+
+	close(dev_fd);
+	return true;
+out_map:
+	munmap((void *)secs->base, secs->size);
+out_dev_fd:
+	close(dev_fd);
+	return false;
+}
+
+void sgx_call(void *rdi, void *rsi, void *entry);
+
+int main(int argc, char **argv)
+{
+	unsigned long bin_size = (unsigned long)&encl_bin_end -
+				 (unsigned long)&encl_bin;
+	struct sgx_secs secs;
+	uint64_t result = 0;
+
+	printf("Loading the enclave.\n");
+	if (!encl_load(&secs, bin_size))
+		exit(1);
+
+	printf("Input: 0x%lx\n", MAGIC);
+	sgx_call((void *)&MAGIC, &result, (void *)secs.base);
+	if (result != MAGIC) {
+		fprintf(stderr, "0x%lx != 0x%lx\n", result, MAGIC);
+		exit(1);
+	}
+
+	printf("Output: 0x%lx\n", result);
+	exit(0);
+}
diff --git a/tools/testing/selftests/x86/sgx/sgx_arch.h b/tools/testing/selftests/x86/sgx/sgx_arch.h
new file mode 100644
index 000000000000..7711a1be8ad4
--- /dev/null
+++ b/tools/testing/selftests/x86/sgx/sgx_arch.h
@@ -0,0 +1,109 @@ 
+/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
+/*
+ * Copyright(c) 2016-18 Intel Corporation.
+ */
+
+#ifndef SGX_ARCH_H
+#define SGX_ARCH_H
+
+#include <stdint.h>
+
+enum sgx_attribute {
+	SGX_ATTR_DEBUG		= 0x02,
+	SGX_ATTR_MODE64BIT	= 0x04,
+	SGX_ATTR_PROVISIONKEY	= 0x10,
+	SGX_ATTR_EINITTOKENKEY	= 0x20,
+};
+
+#define SGX_ATTR_RESERVED_MASK 0xFFFFFFFFFFFFFFC9L
+
+#define SGX_SECS_RESERVED1_SIZE 24
+#define SGX_SECS_RESERVED2_SIZE 32
+#define SGX_SECS_RESERVED3_SIZE 96
+#define SGX_SECS_RESERVED4_SIZE 3836
+
+struct sgx_secs {
+	uint64_t size;
+	uint64_t base;
+	uint32_t ssaframesize;
+	uint32_t miscselect;
+	uint8_t reserved1[SGX_SECS_RESERVED1_SIZE];
+	uint64_t attributes;
+	uint64_t xfrm;
+	uint32_t mrenclave[8];
+	uint8_t reserved2[SGX_SECS_RESERVED2_SIZE];
+	uint32_t mrsigner[8];
+	uint8_t	reserved3[SGX_SECS_RESERVED3_SIZE];
+	uint16_t isvvprodid;
+	uint16_t isvsvn;
+	uint8_t reserved4[SGX_SECS_RESERVED4_SIZE];
+};
+
+#define SGX_SECINFO_PERMISSION_MASK	0x0000000000000007L
+#define SGX_SECINFO_PAGE_TYPE_MASK	0x000000000000FF00L
+#define SGX_SECINFO_RESERVED_MASK	0xFFFFFFFFFFFF00F8L
+
+enum sgx_page_type {
+	SGX_PAGE_TYPE_SECS	= 0x00,
+	SGX_PAGE_TYPE_TCS	= 0x01,
+	SGX_PAGE_TYPE_REG	= 0x02,
+	SGX_PAGE_TYPE_VA	= 0x03,
+	SGX_PAGE_TYPE_TRIM	= 0x04,
+};
+
+enum sgx_secinfo_flags {
+	SGX_SECINFO_R		= 0x01,
+	SGX_SECINFO_W		= 0x02,
+	SGX_SECINFO_X		= 0x04,
+	SGX_SECINFO_SECS	= (SGX_PAGE_TYPE_SECS << 8),
+	SGX_SECINFO_TCS		= (SGX_PAGE_TYPE_TCS << 8),
+	SGX_SECINFO_REG		= (SGX_PAGE_TYPE_REG << 8),
+	SGX_SECINFO_TRIM	= (SGX_PAGE_TYPE_TRIM << 8),
+};
+
+struct sgx_secinfo {
+	uint64_t flags;
+	uint64_t reserved[7];
+} __attribute__((aligned(64)));
+
+#define SGX_MODULUS_SIZE 384
+
+struct sgx_sigstruct_header {
+	uint64_t header1[2];
+	uint32_t vendor;
+	uint32_t date;
+	uint64_t header2[2];
+	uint32_t swdefined;
+	uint8_t reserved1[84];
+};
+
+struct sgx_sigstruct_body {
+	uint32_t miscselect;
+	uint32_t miscmask;
+	uint8_t reserved2[20];
+	uint64_t attributes;
+	uint64_t xfrm;
+	uint8_t attributemask[16];
+	uint8_t mrenclave[32];
+	uint8_t reserved3[32];
+	uint16_t isvprodid;
+	uint16_t isvsvn;
+} __attribute__((__packed__));
+
+struct sgx_sigstruct {
+	struct sgx_sigstruct_header header;
+	uint8_t modulus[SGX_MODULUS_SIZE];
+	uint32_t exponent;
+	uint8_t signature[SGX_MODULUS_SIZE];
+	struct sgx_sigstruct_body body;
+	uint8_t reserved4[12];
+	uint8_t q1[SGX_MODULUS_SIZE];
+	uint8_t q2[SGX_MODULUS_SIZE];
+};
+
+struct sgx_sigstruct_payload {
+	struct sgx_sigstruct_header header;
+	struct sgx_sigstruct_body body;
+};
+
+#endif /* SGX_ARCH_H */
diff --git a/tools/testing/selftests/x86/sgx/sgx_call.S b/tools/testing/selftests/x86/sgx/sgx_call.S
new file mode 100644
index 000000000000..b841d7345533
--- /dev/null
+++ b/tools/testing/selftests/x86/sgx/sgx_call.S
@@ -0,0 +1,20 @@ 
+/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
+/**
+* Copyright(c) 2016-18 Intel Corporation.
+*/
+.macro ENCLU
+.byte 0x0f, 0x01, 0xd7
+.endm
+
+	.text
+
+	.global sgx_call
+sgx_call:
+	push	%rbx
+	mov	$0x02, %rax
+	mov	%rdx, %rbx
+	lea	sgx_async_exit(%rip), %rcx
+sgx_async_exit:
+	ENCLU
+	pop	%rbx
+	ret
diff --git a/tools/testing/selftests/x86/sgx/sgx_uapi.h b/tools/testing/selftests/x86/sgx/sgx_uapi.h
new file mode 100644
index 000000000000..ef19f1c013d1
--- /dev/null
+++ b/tools/testing/selftests/x86/sgx/sgx_uapi.h
@@ -0,0 +1,100 @@ 
+/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
+/*
+ * Copyright(c) 2016-18 Intel Corporation.
+ */
+
+#ifndef _UAPI_ASM_X86_SGX_H
+#define _UAPI_ASM_X86_SGX_H
+
+#include <linux/types.h>
+#include <linux/ioctl.h>
+
+#define SGX_MAGIC 0xA4
+
+#define SGX_IOC_ENCLAVE_CREATE \
+	_IOW(SGX_MAGIC, 0x00, struct sgx_enclave_create)
+#define SGX_IOC_ENCLAVE_ADD_PAGE \
+	_IOW(SGX_MAGIC, 0x01, struct sgx_enclave_add_page)
+#define SGX_IOC_ENCLAVE_INIT \
+	_IOW(SGX_MAGIC, 0x02, struct sgx_enclave_init)
+#define SGX_IOC_ENCLAVE_REMOVE_PAGES \
+	_IOW(SGX_MAGIC, 0x03, struct sgx_enclave_remove_pages)
+#define SGX_IOC_ENCLAVE_MODIFY_PAGES \
+	_IOW(SGX_MAGIC, 0x04, struct sgx_enclave_modify_pages)
+
+/* IOCTL return values */
+#define SGX_POWER_LOST_ENCLAVE		0x40000000
+
+/**
+ * struct sgx_enclave_create - parameter structure for the
+ *                             %SGX_IOC_ENCLAVE_CREATE ioctl
+ * @src:	address for the SECS page data
+ */
+struct sgx_enclave_create  {
+	__u64	src;
+};
+
+/**
+ * struct sgx_enclave_add_page - parameter structure for the
+ *                               %SGX_IOC_ENCLAVE_ADD_PAGE ioctl
+ * @addr:	address within the ELRANGE
+ * @src:	address for the page data
+ * @secinfo:	address for the SECINFO data
+ * @mrmask:	bitmask for the measured 256 byte chunks
+ */
+struct sgx_enclave_add_page {
+	__u64	addr;
+	__u64	src;
+	__u64	secinfo;
+	__u16	mrmask;
+} __attribute__((__packed__));
+
+
+/**
+ * struct sgx_enclave_init - parameter structure for the
+ *                           %SGX_IOC_ENCLAVE_INIT ioctl
+ * @addr:	address within the ELRANGE
+ * @sigstruct:	address for the SIGSTRUCT data
+ */
+struct sgx_enclave_init {
+	__u64	addr;
+	__u64	sigstruct;
+};
+
+/**
+ * struct sgx_enclave_remove_pages - parameter structure for the
+ *                                   %SGX_IOC_ENCLAVE_REMOVE_PAGES ioctl
+ * @addr:	address in the ELRANGE for the first page
+ * @length:	length of the address range (must be multiple of the page size)
+ */
+struct sgx_enclave_remove_pages {
+	__u64	addr;
+	__u64	length;
+} __packed;
+
+/**
+ * enum sgx_enclave_modify_ops - page modification operations
+ * @SGX_ENCLAVE_MODIFY_PERMISSIONS:	change page permissions
+ * @SGX_ENCLAVE_MODIFY_TYPES:		change page type
+ */
+enum sgx_enclave_modify_ops {
+	SGX_ENCLAVE_MODIFY_PERMISSIONS	= 0,
+	SGX_ENCLAVE_MODIFY_TYPES	= 1,
+};
+
+/**
+ * struct sgx_enclave_modify_pages - parameter structure for the
+ *                                   %SGX_IOC_ENCLAVE_MOD_PAGES ioctl
+ * @addr:	address in the ELRANGE for the first page
+ * @length:	length of the address range (must be multiple of the page size)
+ * @secinfo:	address of the new SECINFO data
+ * @op:		a value of &sgx_enclave_modify_ops
+ */
+struct sgx_enclave_modify_pages {
+	__u64	addr;
+	__u64	length;
+	__u64	secinfo;
+	__u8	op;
+} __attribute__((__packed__));
+
+#endif /* _UAPI_ASM_X86_SGX_H */
diff --git a/tools/testing/selftests/x86/sgx/sgxsign.c b/tools/testing/selftests/x86/sgx/sgxsign.c
new file mode 100644
index 000000000000..a670aa186dba
--- /dev/null
+++ b/tools/testing/selftests/x86/sgx/sgxsign.c
@@ -0,0 +1,503 @@ 
+// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
+// Copyright(c) 2016-18 Intel Corporation.
+
+#define _GNU_SOURCE
+#include <getopt.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <openssl/err.h>
+#include <openssl/pem.h>
+#include "sgx_arch.h"
+
+static const char *sign_key_pass;
+
+static bool check_crypto_errors(void)
+{
+	int err;
+	bool had_errors = false;
+	const char *filename;
+	int line;
+	char str[256];
+
+	for ( ; ; ) {
+		if (ERR_peek_error() == 0)
+			break;
+
+		had_errors = true;
+		err = ERR_get_error_line(&filename, &line);
+		ERR_error_string_n(err, str, sizeof(str));
+		fprintf(stderr, "crypto: %s: %s:%d\n", str, filename, line);
+	}
+
+	return had_errors;
+}
+
+static void exit_usage(const char *program)
+{
+	fprintf(stderr,
+		"Usage: %s/sign-le <key> <enclave> <sigstruct>\n", program);
+	exit(1);
+}
+
+static int pem_passwd_cb(char *buf, int size, int rwflag, void *u)
+{
+	if (!sign_key_pass)
+		return -1;
+
+	strncpy(buf, sign_key_pass, size);
+	/* no retry */
+	sign_key_pass = NULL;
+
+	return strlen(buf) >= size ? size - 1 : strlen(buf);
+}
+
+static inline const BIGNUM *get_modulus(RSA *key)
+{
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
+	return key->n;
+#else
+	const BIGNUM *n;
+
+	RSA_get0_key(key, &n, NULL, NULL);
+	return n;
+#endif
+}
+
+static RSA *load_sign_key(const char *path)
+{
+	FILE *f;
+	RSA *key;
+
+	f = fopen(path, "rb");
+	if (!f) {
+		fprintf(stderr, "Unable to open %s\n", path);
+		return NULL;
+	}
+	key = RSA_new();
+	if (!PEM_read_RSAPrivateKey(f, &key, pem_passwd_cb, NULL))
+		return NULL;
+	fclose(f);
+
+	if (BN_num_bytes(get_modulus(key)) != SGX_MODULUS_SIZE) {
+		fprintf(stderr, "Invalid key size %d\n",
+			BN_num_bytes(get_modulus(key)));
+		RSA_free(key);
+		return NULL;
+	}
+
+	return key;
+}
+
+static void reverse_bytes(void *data, int length)
+{
+	int i = 0;
+	int j = length - 1;
+	uint8_t temp;
+	uint8_t *ptr = data;
+
+	while (i < j) {
+		temp = ptr[i];
+		ptr[i] = ptr[j];
+		ptr[j] = temp;
+		i++;
+		j--;
+	}
+}
+
+enum mrtags {
+	MRECREATE = 0x0045544145524345,
+	MREADD = 0x0000000044444145,
+	MREEXTEND = 0x00444E4554584545,
+};
+
+static bool mrenclave_update(EVP_MD_CTX *ctx, const void *data)
+{
+	if (!EVP_DigestUpdate(ctx, data, 64)) {
+		fprintf(stderr, "digest update failed\n");
+		return false;
+	}
+
+	return true;
+}
+
+static bool mrenclave_commit(EVP_MD_CTX *ctx, uint8_t *mrenclave)
+{
+	unsigned int size;
+
+	if (!EVP_DigestFinal_ex(ctx, (unsigned char *)mrenclave, &size)) {
+		fprintf(stderr, "digest commit failed\n");
+		return false;
+	}
+
+	if (size != 32) {
+		fprintf(stderr, "invalid digest size = %u\n", size);
+		return false;
+	}
+
+	return true;
+}
+
+struct mrecreate {
+	uint64_t tag;
+	uint32_t ssaframesize;
+	uint64_t size;
+	uint8_t reserved[44];
+} __attribute__((__packed__));
+
+
+static bool mrenclave_ecreate(EVP_MD_CTX *ctx, uint64_t blob_size)
+{
+	struct mrecreate mrecreate;
+	uint64_t encl_size;
+
+	for (encl_size = 0x1000; encl_size < blob_size; )
+		encl_size <<= 1;
+
+	memset(&mrecreate, 0, sizeof(mrecreate));
+	mrecreate.tag = MRECREATE;
+	mrecreate.ssaframesize = 1;
+	mrecreate.size = encl_size;
+
+	if (!EVP_DigestInit_ex(ctx, EVP_sha256(), NULL))
+		return false;
+
+	return mrenclave_update(ctx, &mrecreate);
+}
+
+struct mreadd {
+	uint64_t tag;
+	uint64_t offset;
+	uint64_t flags; /* SECINFO flags */
+	uint8_t reserved[40];
+} __attribute__((__packed__));
+
+static bool mrenclave_eadd(EVP_MD_CTX *ctx, uint64_t offset, uint64_t flags)
+{
+	struct mreadd mreadd;
+
+	memset(&mreadd, 0, sizeof(mreadd));
+	mreadd.tag = MREADD;
+	mreadd.offset = offset;
+	mreadd.flags = flags;
+
+	return mrenclave_update(ctx, &mreadd);
+}
+
+struct mreextend {
+	uint64_t tag;
+	uint64_t offset;
+	uint8_t reserved[48];
+} __attribute__((__packed__));
+
+static bool mrenclave_eextend(EVP_MD_CTX *ctx, uint64_t offset, uint8_t *data)
+{
+	struct mreextend mreextend;
+	int i;
+
+	for (i = 0; i < 0x1000; i += 0x100) {
+		memset(&mreextend, 0, sizeof(mreextend));
+		mreextend.tag = MREEXTEND;
+		mreextend.offset = offset + i;
+
+		if (!mrenclave_update(ctx, &mreextend))
+			return false;
+
+		if (!mrenclave_update(ctx, &data[i + 0x00]))
+			return false;
+
+		if (!mrenclave_update(ctx, &data[i + 0x40]))
+			return false;
+
+		if (!mrenclave_update(ctx, &data[i + 0x80]))
+			return false;
+
+		if (!mrenclave_update(ctx, &data[i + 0xC0]))
+			return false;
+	}
+
+	return true;
+}
+
+/**
+ * measure_encl - measure enclave
+ * @path: path to the enclave
+ * @mrenclave: measurement
+ *
+ * Calculates MRENCLAVE. Assumes that the very first page is a TCS page and
+ * following pages are regular pages. Does not measure the contents of the
+ * enclave as the signing tool is used at the moment only for the launch
+ * enclave, which is pass-through (everything gets a token).
+ */
+static bool measure_encl(const char *path, uint8_t *mrenclave)
+{
+	FILE *file;
+	struct stat sb;
+	EVP_MD_CTX *ctx;
+	uint64_t flags;
+	uint64_t offset;
+	uint8_t data[0x1000];
+	int rc;
+
+	ctx = EVP_MD_CTX_create();
+	if (!ctx)
+		return false;
+
+	file = fopen(path, "rb");
+	if (!file) {
+		perror("fopen");
+		EVP_MD_CTX_destroy(ctx);
+		return false;
+	}
+
+	rc = stat(path, &sb);
+	if (rc) {
+		perror("stat");
+		goto out;
+	}
+
+	if (!sb.st_size || sb.st_size & 0xfff) {
+		fprintf(stderr, "Invalid blob size %lu\n", sb.st_size);
+		goto out;
+	}
+
+	if (!mrenclave_ecreate(ctx, sb.st_size))
+		goto out;
+
+	for (offset = 0; offset < sb.st_size; offset += 0x1000) {
+		if (!offset)
+			flags = SGX_SECINFO_TCS;
+		else
+			flags = SGX_SECINFO_REG | SGX_SECINFO_R |
+				SGX_SECINFO_W | SGX_SECINFO_X;
+
+		if (!mrenclave_eadd(ctx, offset, flags))
+			goto out;
+
+		rc = fread(data, 1, 0x1000, file);
+		if (!rc)
+			break;
+		if (rc < 0x1000)
+			goto out;
+
+		if (!mrenclave_eextend(ctx, offset, data))
+			goto out;
+	}
+
+	if (!mrenclave_commit(ctx, mrenclave))
+		goto out;
+
+	fclose(file);
+	EVP_MD_CTX_destroy(ctx);
+	return true;
+out:
+	fclose(file);
+	EVP_MD_CTX_destroy(ctx);
+	return false;
+}
+
+/**
+ * sign_encl - sign enclave
+ * @sigstruct: pointer to SIGSTRUCT
+ * @key: 3072-bit RSA key
+ * @signature: byte array for the signature
+ *
+ * Calculates EMSA-PKCSv1.5 signature for the given SIGSTRUCT. The result is
+ * stored in big-endian format so that it can be further passed to OpenSSL
+ * libcrypto functions.
+ */
+static bool sign_encl(const struct sgx_sigstruct *sigstruct, RSA *key,
+		      uint8_t *signature)
+{
+	struct sgx_sigstruct_payload payload;
+	unsigned int siglen;
+	uint8_t digest[SHA256_DIGEST_LENGTH];
+	bool ret;
+
+	memcpy(&payload.header, &sigstruct->header, sizeof(sigstruct->header));
+	memcpy(&payload.body, &sigstruct->body, sizeof(sigstruct->body));
+
+	SHA256((unsigned char *)&payload, sizeof(payload), digest);
+
+	ret = RSA_sign(NID_sha256, digest, SHA256_DIGEST_LENGTH, signature,
+		       &siglen, key);
+
+	return ret;
+}
+
+struct q1q2_ctx {
+	BN_CTX *bn_ctx;
+	BIGNUM *m;
+	BIGNUM *s;
+	BIGNUM *q1;
+	BIGNUM *qr;
+	BIGNUM *q2;
+};
+
+static void free_q1q2_ctx(struct q1q2_ctx *ctx)
+{
+	BN_CTX_free(ctx->bn_ctx);
+	BN_free(ctx->m);
+	BN_free(ctx->s);
+	BN_free(ctx->q1);
+	BN_free(ctx->qr);
+	BN_free(ctx->q2);
+}
+
+static bool alloc_q1q2_ctx(const uint8_t *s, const uint8_t *m,
+			   struct q1q2_ctx *ctx)
+{
+	ctx->bn_ctx = BN_CTX_new();
+	ctx->s = BN_bin2bn(s, SGX_MODULUS_SIZE, NULL);
+	ctx->m = BN_bin2bn(m, SGX_MODULUS_SIZE, NULL);
+	ctx->q1 = BN_new();
+	ctx->qr = BN_new();
+	ctx->q2 = BN_new();
+
+	if (!ctx->bn_ctx || !ctx->s || !ctx->m || !ctx->q1 || !ctx->qr ||
+	    !ctx->q2) {
+		free_q1q2_ctx(ctx);
+		return false;
+	}
+
+	return true;
+}
+
+static bool calc_q1q2(const uint8_t *s, const uint8_t *m, uint8_t *q1,
+		      uint8_t *q2)
+{
+	struct q1q2_ctx ctx;
+
+	if (!alloc_q1q2_ctx(s, m, &ctx)) {
+		fprintf(stderr, "Not enough memory for Q1Q2 calculation\n");
+		return false;
+	}
+
+	if (!BN_mul(ctx.q1, ctx.s, ctx.s, ctx.bn_ctx))
+		goto out;
+
+	if (!BN_div(ctx.q1, ctx.qr, ctx.q1, ctx.m, ctx.bn_ctx))
+		goto out;
+
+	if (BN_num_bytes(ctx.q1) > SGX_MODULUS_SIZE) {
+		fprintf(stderr, "Too large Q1 %d bytes\n",
+			BN_num_bytes(ctx.q1));
+		goto out;
+	}
+
+	if (!BN_mul(ctx.q2, ctx.s, ctx.qr, ctx.bn_ctx))
+		goto out;
+
+	if (!BN_div(ctx.q2, NULL, ctx.q2, ctx.m, ctx.bn_ctx))
+		goto out;
+
+	if (BN_num_bytes(ctx.q2) > SGX_MODULUS_SIZE) {
+		fprintf(stderr, "Too large Q2 %d bytes\n",
+			BN_num_bytes(ctx.q2));
+		goto out;
+	}
+
+	BN_bn2bin(ctx.q1, q1);
+	BN_bn2bin(ctx.q2, q2);
+
+	free_q1q2_ctx(&ctx);
+	return true;
+out:
+	free_q1q2_ctx(&ctx);
+	return false;
+}
+
+static bool save_sigstruct(const struct sgx_sigstruct *sigstruct,
+			   const char *path)
+{
+	FILE *f = fopen(path, "wb");
+
+	if (!f) {
+		fprintf(stderr, "Unable to open %s\n", path);
+		return false;
+	}
+
+	fwrite(sigstruct, sizeof(*sigstruct), 1, f);
+	fclose(f);
+	return true;
+}
+
+int main(int argc, char **argv)
+{
+	uint64_t header1[2] = {0x000000E100000006, 0x0000000000010000};
+	uint64_t header2[2] = {0x0000006000000101, 0x0000000100000060};
+	struct sgx_sigstruct ss;
+	const char *program;
+	int opt;
+	RSA *sign_key;
+
+	memset(&ss, 0, sizeof(ss));
+	ss.header.header1[0] = header1[0];
+	ss.header.header1[1] = header1[1];
+	ss.header.header2[0] = header2[0];
+	ss.header.header2[1] = header2[1];
+	ss.exponent = 3;
+
+#ifndef CONFIG_EINITTOKENKEY
+	ss.body.attributes = SGX_ATTR_MODE64BIT;
+#else
+	ss.body.attributes = SGX_ATTR_MODE64BIT | SGX_ATTR_EINITTOKENKEY;
+#endif
+	ss.body.xfrm = 3,
+
+	sign_key_pass = getenv("KBUILD_SGX_SIGN_PIN");
+	program = argv[0];
+
+	do {
+		opt = getopt(argc, argv, "");
+		switch (opt) {
+		case -1:
+			break;
+		default:
+			exit_usage(program);
+		}
+	} while (opt != -1);
+
+	argc -= optind;
+	argv += optind;
+
+	if (argc < 3)
+		exit_usage(program);
+
+	/* sanity check only */
+	if (check_crypto_errors())
+		exit(1);
+
+	sign_key = load_sign_key(argv[0]);
+	if (!sign_key)
+		goto out;
+
+	BN_bn2bin(get_modulus(sign_key), ss.modulus);
+
+	if (!measure_encl(argv[1], ss.body.mrenclave))
+		goto out;
+
+	if (!sign_encl(&ss, sign_key, ss.signature))
+		goto out;
+
+	if (!calc_q1q2(ss.signature, ss.modulus, ss.q1, ss.q2))
+		goto out;
+
+	/* convert to little endian */
+	reverse_bytes(ss.signature, SGX_MODULUS_SIZE);
+	reverse_bytes(ss.modulus, SGX_MODULUS_SIZE);
+	reverse_bytes(ss.q1, SGX_MODULUS_SIZE);
+	reverse_bytes(ss.q2, SGX_MODULUS_SIZE);
+
+	if (!save_sigstruct(&ss, argv[2]))
+		goto out;
+	exit(0);
+out:
+	check_crypto_errors();
+	exit(1);
+}
diff --git a/tools/testing/selftests/x86/sgx/signing_key.pem b/tools/testing/selftests/x86/sgx/signing_key.pem
new file mode 100644
index 000000000000..d76f21f19187
--- /dev/null
+++ b/tools/testing/selftests/x86/sgx/signing_key.pem
@@ -0,0 +1,39 @@ 
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----