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diff --git a/qemu/roms/ipxe/src/tests/cbc_test.c b/qemu/roms/ipxe/src/tests/cbc_test.c
new file mode 100644
index 000000000..cb0f7bdea
--- /dev/null
+++ b/qemu/roms/ipxe/src/tests/cbc_test.c
@@ -0,0 +1,177 @@
+/*
+ * Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * 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 Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+/** @file
+ *
+ * CBC self-tests
+ *
+ */
+
+/* Forcibly enable assertions */
+#undef NDEBUG
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <ipxe/crypto.h>
+#include <ipxe/profile.h>
+#include "cbc_test.h"
+
+/** Number of sample iterations for profiling */
+#define PROFILE_COUNT 16
+
+/**
+ * Test CBC encryption
+ *
+ * @v cipher			Cipher algorithm
+ * @v key			Key
+ * @v key_len			Length of key
+ * @v iv			Initialisation vector
+ * @v plaintext			Plaintext data
+ * @v expected_ciphertext	Expected ciphertext data
+ * @v len			Length of data
+ * @ret ok			Ciphertext is as expected
+ */
+int cbc_test_encrypt ( struct cipher_algorithm *cipher, const void *key,
+		       size_t key_len, const void *iv, const void *plaintext,
+		       const void *expected_ciphertext, size_t len ) {
+	uint8_t ctx[cipher->ctxsize];
+	uint8_t ciphertext[len];
+	int rc;
+
+	/* Initialise cipher */
+	rc = cipher_setkey ( cipher, ctx, key, key_len );
+	assert ( rc == 0 );
+	cipher_setiv ( cipher, ctx, iv );
+
+	/* Perform encryption */
+	cipher_encrypt ( cipher, ctx, plaintext, ciphertext, len );
+
+	/* Verify result */
+	return ( memcmp ( ciphertext, expected_ciphertext, len ) == 0 );
+}
+
+/**
+ * Test CBC decryption
+ *
+ * @v cipher			Cipher algorithm
+ * @v key			Key
+ * @v key_len			Length of key
+ * @v iv			Initialisation vector
+ * @v ciphertext		Ciphertext data
+ * @v expected_plaintext	Expected plaintext data
+ * @v len			Length of data
+ * @ret ok			Plaintext is as expected
+ */
+int cbc_test_decrypt ( struct cipher_algorithm *cipher, const void *key,
+		       size_t key_len, const void *iv, const void *ciphertext,
+		       const void *expected_plaintext, size_t len ) {
+	uint8_t ctx[cipher->ctxsize];
+	uint8_t plaintext[len];
+	int rc;
+
+	/* Initialise cipher */
+	rc = cipher_setkey ( cipher, ctx, key, key_len );
+	assert ( rc == 0 );
+	cipher_setiv ( cipher, ctx, iv );
+
+	/* Perform encryption */
+	cipher_decrypt ( cipher, ctx, ciphertext, plaintext, len );
+
+	/* Verify result */
+	return ( memcmp ( plaintext, expected_plaintext, len ) == 0 );
+}
+
+/**
+ * Calculate CBC encryption or decryption cost
+ *
+ * @v cipher			Cipher algorithm
+ * @v key_len			Length of key
+ * @v op			Encryption or decryption operation
+ * @ret cost			Cost (in cycles per byte)
+ */
+static unsigned long cbc_cost ( struct cipher_algorithm *cipher,
+				size_t key_len,
+				void ( * op ) ( struct cipher_algorithm *cipher,
+						void *ctx, const void *src,
+						void *dst, size_t len ) ) {
+	static uint8_t random[8192]; /* Too large for stack */
+	uint8_t key[key_len];
+	uint8_t iv[cipher->blocksize];
+	uint8_t ctx[cipher->ctxsize];
+	struct profiler profiler;
+	unsigned long cost;
+	unsigned int i;
+	int rc;
+
+	/* Fill buffer with pseudo-random data */
+	srand ( 0x1234568 );
+	for ( i = 0 ; i < sizeof ( random ) ; i++ )
+		random[i] = rand();
+	for ( i = 0 ; i < sizeof ( key ) ; i++ )
+		key[i] = rand();
+	for ( i = 0 ; i < sizeof ( iv ) ; i++ )
+		iv[i] = rand();
+
+	/* Initialise cipher */
+	rc = cipher_setkey ( cipher, ctx, key, key_len );
+	assert ( rc == 0 );
+	cipher_setiv ( cipher, ctx, iv );
+
+	/* Profile cipher operation */
+	memset ( &profiler, 0, sizeof ( profiler ) );
+	for ( i = 0 ; i < PROFILE_COUNT ; i++ ) {
+		profile_start ( &profiler );
+		op ( cipher, ctx, random, random, sizeof ( random ) );
+		profile_stop ( &profiler );
+	}
+
+	/* Round to nearest whole number of cycles per byte */
+	cost = ( ( profile_mean ( &profiler ) + ( sizeof ( random ) / 2 ) ) /
+		 sizeof ( random ) );
+
+	return cost;
+}
+
+/**
+ * Calculate CBC encryption cost
+ *
+ * @v cipher			Cipher algorithm
+ * @v key_len			Length of key
+ * @ret cost			Cost (in cycles per byte)
+ */
+unsigned long cbc_cost_encrypt ( struct cipher_algorithm *cipher,
+				 size_t key_len ) {
+	return cbc_cost ( cipher, key_len, cipher_encrypt );
+}
+
+/**
+ * Calculate CBC decryption cost
+ *
+ * @v cipher			Cipher algorithm
+ * @v key_len			Length of key
+ * @ret cost			Cost (in cycles per byte)
+ */
+unsigned long cbc_cost_decrypt ( struct cipher_algorithm *cipher,
+				 size_t key_len ) {
+	return cbc_cost ( cipher, key_len, cipher_decrypt );
+}