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author | 2015-08-28 09:58:54 +0800 | |
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committer | 2015-09-01 12:44:00 +0800 | |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/ipxe/src/tests/entropy_sample.c | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/ipxe/src/tests/entropy_sample.c')
-rw-r--r-- | qemu/roms/ipxe/src/tests/entropy_sample.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/qemu/roms/ipxe/src/tests/entropy_sample.c b/qemu/roms/ipxe/src/tests/entropy_sample.c new file mode 100644 index 000000000..95a662e3e --- /dev/null +++ b/qemu/roms/ipxe/src/tests/entropy_sample.c @@ -0,0 +1,72 @@ +/* + * 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 + * + * Entropy sampling + * + */ + +#include <stdio.h> +#include <ipxe/entropy.h> +#include <ipxe/test.h> + +/** Total number of test samples */ +#define SAMPLE_COUNT 65536 + +/** Number of samples per block */ +#define SAMPLE_BLOCKSIZE 256 + +/** + * Generate entropy samples for external testing + * + */ +static void entropy_sample_test_exec ( void ) { + static noise_sample_t samples[SAMPLE_BLOCKSIZE]; + unsigned int i; + unsigned int j; + int rc; + + /* Collect and print blocks of samples */ + for ( i = 0 ; i < ( SAMPLE_COUNT / SAMPLE_BLOCKSIZE ) ; i++ ) { + + /* Collect one block of samples */ + rc = entropy_enable(); + ok ( rc == 0 ); + for ( j = 0 ; j < SAMPLE_BLOCKSIZE ; j++ ) { + rc = get_noise ( &samples[j] ); + ok ( rc == 0 ); + } + entropy_disable(); + + /* Print out sample values */ + for ( j = 0 ; j < SAMPLE_BLOCKSIZE ; j++ ) { + printf ( "SAMPLE %d %d\n", ( i * SAMPLE_BLOCKSIZE + j ), + samples[j] ); + } + } +} + +/** Entropy sampling self-test */ +struct self_test entropy_sample_test __self_test = { + .name = "entropy_sample", + .exec = entropy_sample_test_exec, +}; |