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Dependents:   mbed-TFT-example-NCS36510 mbed-Accelerometer-example-NCS36510 mbed-Accelerometer-example-NCS36510

features/mbedtls/src/padlock.c@1:f30bdcd2b33b, 2017-02-27 (annotated)

Committer:
jacobjohnson
Date:
Mon Feb 27 17:45:05 2017 +0000
Revision:
1:f30bdcd2b33b
Parent:
0:098463de4c5d 
changed the inputscale from 1 to 7 in analogin_api.c.  This will need to be changed later, and accessed from the main level, but for now this allows the  adc to read a value from 0 to 3.7V, instead of just up to 1V.;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
group-onsemi 0:098463de4c5d 1 /*
group-onsemi 0:098463de4c5d 2 * VIA PadLock support functions
group-onsemi 0:098463de4c5d 3 *
group-onsemi 0:098463de4c5d 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
group-onsemi 0:098463de4c5d 5 * SPDX-License-Identifier: Apache-2.0
group-onsemi 0:098463de4c5d 6 *
group-onsemi 0:098463de4c5d 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
group-onsemi 0:098463de4c5d 8 * not use this file except in compliance with the License.
group-onsemi 0:098463de4c5d 9 * You may obtain a copy of the License at
group-onsemi 0:098463de4c5d 10 *
group-onsemi 0:098463de4c5d 11 * http://www.apache.org/licenses/LICENSE-2.0
group-onsemi 0:098463de4c5d 12 *
group-onsemi 0:098463de4c5d 13 * Unless required by applicable law or agreed to in writing, software
group-onsemi 0:098463de4c5d 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
group-onsemi 0:098463de4c5d 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
group-onsemi 0:098463de4c5d 16 * See the License for the specific language governing permissions and
group-onsemi 0:098463de4c5d 17 * limitations under the License.
group-onsemi 0:098463de4c5d 18 *
group-onsemi 0:098463de4c5d 19 * This file is part of mbed TLS (https://tls.mbed.org)
group-onsemi 0:098463de4c5d 20 */
group-onsemi 0:098463de4c5d 21 /*
group-onsemi 0:098463de4c5d 22 * This implementation is based on the VIA PadLock Programming Guide:
group-onsemi 0:098463de4c5d 23 *
group-onsemi 0:098463de4c5d 24 * http://www.via.com.tw/en/downloads/whitepapers/initiatives/padlock/
group-onsemi 0:098463de4c5d 25 * programming_guide.pdf
group-onsemi 0:098463de4c5d 26 */
group-onsemi 0:098463de4c5d 27
group-onsemi 0:098463de4c5d 28 #if !defined(MBEDTLS_CONFIG_FILE)
group-onsemi 0:098463de4c5d 29 #include "mbedtls/config.h"
group-onsemi 0:098463de4c5d 30 #else
group-onsemi 0:098463de4c5d 31 #include MBEDTLS_CONFIG_FILE
group-onsemi 0:098463de4c5d 32 #endif
group-onsemi 0:098463de4c5d 33
group-onsemi 0:098463de4c5d 34 #if defined(MBEDTLS_PADLOCK_C)
group-onsemi 0:098463de4c5d 35
group-onsemi 0:098463de4c5d 36 #include "mbedtls/padlock.h"
group-onsemi 0:098463de4c5d 37
group-onsemi 0:098463de4c5d 38 #include <string.h>
group-onsemi 0:098463de4c5d 39
group-onsemi 0:098463de4c5d 40 #ifndef asm
group-onsemi 0:098463de4c5d 41 #define asm __asm
group-onsemi 0:098463de4c5d 42 #endif
group-onsemi 0:098463de4c5d 43
group-onsemi 0:098463de4c5d 44 #if defined(MBEDTLS_HAVE_X86)
group-onsemi 0:098463de4c5d 45
group-onsemi 0:098463de4c5d 46 /*
group-onsemi 0:098463de4c5d 47 * PadLock detection routine
group-onsemi 0:098463de4c5d 48 */
group-onsemi 0:098463de4c5d 49 int mbedtls_padlock_has_support( int feature )
group-onsemi 0:098463de4c5d 50 {
group-onsemi 0:098463de4c5d 51 static int flags = -1;
group-onsemi 0:098463de4c5d 52 int ebx = 0, edx = 0;
group-onsemi 0:098463de4c5d 53
group-onsemi 0:098463de4c5d 54 if( flags == -1 )
group-onsemi 0:098463de4c5d 55 {
group-onsemi 0:098463de4c5d 56 asm( "movl %%ebx, %0 \n\t"
group-onsemi 0:098463de4c5d 57 "movl $0xC0000000, %%eax \n\t"
group-onsemi 0:098463de4c5d 58 "cpuid \n\t"
group-onsemi 0:098463de4c5d 59 "cmpl $0xC0000001, %%eax \n\t"
group-onsemi 0:098463de4c5d 60 "movl $0, %%edx \n\t"
group-onsemi 0:098463de4c5d 61 "jb unsupported \n\t"
group-onsemi 0:098463de4c5d 62 "movl $0xC0000001, %%eax \n\t"
group-onsemi 0:098463de4c5d 63 "cpuid \n\t"
group-onsemi 0:098463de4c5d 64 "unsupported: \n\t"
group-onsemi 0:098463de4c5d 65 "movl %%edx, %1 \n\t"
group-onsemi 0:098463de4c5d 66 "movl %2, %%ebx \n\t"
group-onsemi 0:098463de4c5d 67 : "=m" (ebx), "=m" (edx)
group-onsemi 0:098463de4c5d 68 : "m" (ebx)
group-onsemi 0:098463de4c5d 69 : "eax", "ecx", "edx" );
group-onsemi 0:098463de4c5d 70
group-onsemi 0:098463de4c5d 71 flags = edx;
group-onsemi 0:098463de4c5d 72 }
group-onsemi 0:098463de4c5d 73
group-onsemi 0:098463de4c5d 74 return( flags & feature );
group-onsemi 0:098463de4c5d 75 }
group-onsemi 0:098463de4c5d 76
group-onsemi 0:098463de4c5d 77 /*
group-onsemi 0:098463de4c5d 78 * PadLock AES-ECB block en(de)cryption
group-onsemi 0:098463de4c5d 79 */
group-onsemi 0:098463de4c5d 80 int mbedtls_padlock_xcryptecb( mbedtls_aes_context *ctx,
group-onsemi 0:098463de4c5d 81 int mode,
group-onsemi 0:098463de4c5d 82 const unsigned char input[16],
group-onsemi 0:098463de4c5d 83 unsigned char output[16] )
group-onsemi 0:098463de4c5d 84 {
group-onsemi 0:098463de4c5d 85 int ebx = 0;
group-onsemi 0:098463de4c5d 86 uint32_t *rk;
group-onsemi 0:098463de4c5d 87 uint32_t *blk;
group-onsemi 0:098463de4c5d 88 uint32_t *ctrl;
group-onsemi 0:098463de4c5d 89 unsigned char buf[256];
group-onsemi 0:098463de4c5d 90
group-onsemi 0:098463de4c5d 91 rk = ctx->rk;
group-onsemi 0:098463de4c5d 92 blk = MBEDTLS_PADLOCK_ALIGN16( buf );
group-onsemi 0:098463de4c5d 93 memcpy( blk, input, 16 );
group-onsemi 0:098463de4c5d 94
group-onsemi 0:098463de4c5d 95 ctrl = blk + 4;
group-onsemi 0:098463de4c5d 96 *ctrl = 0x80 | ctx->nr | ( ( ctx->nr + ( mode^1 ) - 10 ) << 9 );
group-onsemi 0:098463de4c5d 97
group-onsemi 0:098463de4c5d 98 asm( "pushfl \n\t"
group-onsemi 0:098463de4c5d 99 "popfl \n\t"
group-onsemi 0:098463de4c5d 100 "movl %%ebx, %0 \n\t"
group-onsemi 0:098463de4c5d 101 "movl $1, %%ecx \n\t"
group-onsemi 0:098463de4c5d 102 "movl %2, %%edx \n\t"
group-onsemi 0:098463de4c5d 103 "movl %3, %%ebx \n\t"
group-onsemi 0:098463de4c5d 104 "movl %4, %%esi \n\t"
group-onsemi 0:098463de4c5d 105 "movl %4, %%edi \n\t"
group-onsemi 0:098463de4c5d 106 ".byte 0xf3,0x0f,0xa7,0xc8 \n\t"
group-onsemi 0:098463de4c5d 107 "movl %1, %%ebx \n\t"
group-onsemi 0:098463de4c5d 108 : "=m" (ebx)
group-onsemi 0:098463de4c5d 109 : "m" (ebx), "m" (ctrl), "m" (rk), "m" (blk)
group-onsemi 0:098463de4c5d 110 : "memory", "ecx", "edx", "esi", "edi" );
group-onsemi 0:098463de4c5d 111
group-onsemi 0:098463de4c5d 112 memcpy( output, blk, 16 );
group-onsemi 0:098463de4c5d 113
group-onsemi 0:098463de4c5d 114 return( 0 );
group-onsemi 0:098463de4c5d 115 }
group-onsemi 0:098463de4c5d 116
group-onsemi 0:098463de4c5d 117 /*
group-onsemi 0:098463de4c5d 118 * PadLock AES-CBC buffer en(de)cryption
group-onsemi 0:098463de4c5d 119 */
group-onsemi 0:098463de4c5d 120 int mbedtls_padlock_xcryptcbc( mbedtls_aes_context *ctx,
group-onsemi 0:098463de4c5d 121 int mode,
group-onsemi 0:098463de4c5d 122 size_t length,
group-onsemi 0:098463de4c5d 123 unsigned char iv[16],
group-onsemi 0:098463de4c5d 124 const unsigned char *input,
group-onsemi 0:098463de4c5d 125 unsigned char *output )
group-onsemi 0:098463de4c5d 126 {
group-onsemi 0:098463de4c5d 127 int ebx = 0;
group-onsemi 0:098463de4c5d 128 size_t count;
group-onsemi 0:098463de4c5d 129 uint32_t *rk;
group-onsemi 0:098463de4c5d 130 uint32_t *iw;
group-onsemi 0:098463de4c5d 131 uint32_t *ctrl;
group-onsemi 0:098463de4c5d 132 unsigned char buf[256];
group-onsemi 0:098463de4c5d 133
group-onsemi 0:098463de4c5d 134 if( ( (long) input & 15 ) != 0 ||
group-onsemi 0:098463de4c5d 135 ( (long) output & 15 ) != 0 )
group-onsemi 0:098463de4c5d 136 return( MBEDTLS_ERR_PADLOCK_DATA_MISALIGNED );
group-onsemi 0:098463de4c5d 137
group-onsemi 0:098463de4c5d 138 rk = ctx->rk;
group-onsemi 0:098463de4c5d 139 iw = MBEDTLS_PADLOCK_ALIGN16( buf );
group-onsemi 0:098463de4c5d 140 memcpy( iw, iv, 16 );
group-onsemi 0:098463de4c5d 141
group-onsemi 0:098463de4c5d 142 ctrl = iw + 4;
group-onsemi 0:098463de4c5d 143 *ctrl = 0x80 | ctx->nr | ( ( ctx->nr + ( mode ^ 1 ) - 10 ) << 9 );
group-onsemi 0:098463de4c5d 144
group-onsemi 0:098463de4c5d 145 count = ( length + 15 ) >> 4;
group-onsemi 0:098463de4c5d 146
group-onsemi 0:098463de4c5d 147 asm( "pushfl \n\t"
group-onsemi 0:098463de4c5d 148 "popfl \n\t"
group-onsemi 0:098463de4c5d 149 "movl %%ebx, %0 \n\t"
group-onsemi 0:098463de4c5d 150 "movl %2, %%ecx \n\t"
group-onsemi 0:098463de4c5d 151 "movl %3, %%edx \n\t"
group-onsemi 0:098463de4c5d 152 "movl %4, %%ebx \n\t"
group-onsemi 0:098463de4c5d 153 "movl %5, %%esi \n\t"
group-onsemi 0:098463de4c5d 154 "movl %6, %%edi \n\t"
group-onsemi 0:098463de4c5d 155 "movl %7, %%eax \n\t"
group-onsemi 0:098463de4c5d 156 ".byte 0xf3,0x0f,0xa7,0xd0 \n\t"
group-onsemi 0:098463de4c5d 157 "movl %1, %%ebx \n\t"
group-onsemi 0:098463de4c5d 158 : "=m" (ebx)
group-onsemi 0:098463de4c5d 159 : "m" (ebx), "m" (count), "m" (ctrl),
group-onsemi 0:098463de4c5d 160 "m" (rk), "m" (input), "m" (output), "m" (iw)
group-onsemi 0:098463de4c5d 161 : "memory", "eax", "ecx", "edx", "esi", "edi" );
group-onsemi 0:098463de4c5d 162
group-onsemi 0:098463de4c5d 163 memcpy( iv, iw, 16 );
group-onsemi 0:098463de4c5d 164
group-onsemi 0:098463de4c5d 165 return( 0 );
group-onsemi 0:098463de4c5d 166 }
group-onsemi 0:098463de4c5d 167
group-onsemi 0:098463de4c5d 168 #endif /* MBEDTLS_HAVE_X86 */
group-onsemi 0:098463de4c5d 169
group-onsemi 0:098463de4c5d 170 #endif /* MBEDTLS_PADLOCK_C */