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Add entropy functions for STM32F4 and STM32F7 family

pull/2253/head
adustm 2016-07-26 16:42:02 +02:00
parent 0f2566b3ff
commit 4c50ec2734
3 changed files with 170 additions and 1 deletions
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9
hal/targets.json
View File

@ -772,6 +772,7 @@
"supported_toolchains": ["ARM", "uARM", "GCC_ARM", "IAR"],
"inherits": ["Target"],
"progen": {"target": "nucleo-f410rb"},
"macros": ["MBEDTLS_ENTROPY_HARDWARE_ALT"],
"detect_code": ["0740"],
"device_has": ["ANALOGIN", "ANALOGOUT", "ERROR_RED", "I2C", "I2CSLAVE", "INTERRUPTIN", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SERIAL_FC", "SLEEP", "SPI", "SPISLAVE", "STDIO_MESSAGES"],
"release_versions": ["2", "5"]
@ -808,7 +809,8 @@
"extra_labels": ["STM", "STM32F4", "STM32F429", "STM32F429ZI"],
"supported_toolchains": ["ARM", "uARM", "GCC_ARM", "IAR"],
"progen": {"target": "nucleo-f429zi"},
"device_has": ["ANALOGIN", "ANALOGOUT", "CAN", "ERROR_RED", "I2C", "I2CSLAVE", "INTERRUPTIN", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "RTC_LSI", "SERIAL", "SERIAL_ASYNCH", "SERIAL_FC", "SLEEP", "SPI", "SPISLAVE", "STDIO_MESSAGES"],
"macros": ["MBEDTLS_ENTROPY_HARDWARE_ALT"],
"device_has": ["ANALOGIN", "ANALOGOUT", "CAN", "ERROR_RED", "I2C", "I2CSLAVE", "INTERRUPTIN", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "RTC_LSI", "SERIAL", "SLEEP", "SPI", "SPISLAVE", "STDIO_MESSAGES"],
"detect_code": ["0796"],
"release_versions": ["2", "5"]
},
@ -854,6 +856,7 @@
"extra_labels": ["STM", "STM32F7", "STM32F746", "STM32F746ZG"],
"supported_toolchains": ["ARM", "uARM", "GCC_ARM", "IAR"],
"default_toolchain": "ARM",
"macros": ["MBEDTLS_ENTROPY_HARDWARE_ALT"],
"progen": {
"target": "nucleo-f746zg",
"iar": {
@ -872,6 +875,7 @@
"extra_labels": ["STM", "STM32F7", "STM32F767", "STM32F767ZI"],
"supported_toolchains": ["ARM", "uARM", "GCC_ARM", "IAR"],
"default_toolchain": "ARM",
"macros": ["MBEDTLS_ENTROPY_HARDWARE_ALT"],
"progen": {"target": "nucleo-f767zi"},
"detect_code": ["0818"],
"device_has": ["ANALOGIN", "ANALOGOUT", "I2C", "I2CSLAVE", "INTERRUPTIN", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SLEEP", "SPI", "SPISLAVE", "STDIO_MESSAGES"],
@ -1037,6 +1041,7 @@
"core": "Cortex-M4F",
"default_toolchain": "ARM",
"extra_labels": ["STM", "STM32F4", "STM32F429", "STM32F429ZI"],
"macros": ["MBEDTLS_ENTROPY_HARDWARE_ALT"],
"supported_toolchains": ["ARM", "uARM", "GCC_ARM", "IAR"],
"progen": {"target": "disco-f429zi"},
"device_has": ["ANALOGIN", "ANALOGOUT", "CAN", "ERROR_RED", "I2C", "I2CSLAVE", "INTERRUPTIN", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "RTC_LSI", "SERIAL", "SERIAL_ASYNCH", "SERIAL_FC", "SLEEP", "SPI", "SPISLAVE", "STDIO_MESSAGES"],
@ -1049,6 +1054,7 @@
"extra_labels": ["STM", "STM32F4", "STM32F469", "STM32F469NI"],
"supported_toolchains": ["ARM", "uARM", "IAR", "GCC_ARM"],
"inherits": ["Target"],
"macros": ["MBEDTLS_ENTROPY_HARDWARE_ALT"],
"progen": {"target": "disco-f469ni"},
"detect_code": ["0788"],
"device_has": ["ANALOGIN", "ANALOGOUT", "CAN", "ERROR_RED", "I2C", "I2CSLAVE", "INTERRUPTIN", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_FC", "SLEEP", "SPI", "SPISLAVE", "STDIO_MESSAGES"],
@ -1070,6 +1076,7 @@
"extra_labels": ["STM", "STM32F7", "STM32F746", "STM32F746NG"],
"supported_toolchains": ["ARM", "uARM", "GCC_ARM", "IAR"],
"default_toolchain": "ARM",
"macros": ["MBEDTLS_ENTROPY_HARDWARE_ALT"],
"progen": {"target": "disco-f746ng"},
"detect_code": ["0815"],
"device_has": ["ANALOGIN", "ANALOGOUT", "CAN", "I2C", "I2CSLAVE", "INTERRUPTIN", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SLEEP", "SPI", "SPISLAVE", "STDIO_MESSAGES"],

85
hal/targets/hal/TARGET_STM/TARGET_STM32F4/entropy_hardware_poll.c Normal file
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@ -0,0 +1,85 @@
/*
* Hardware entropy collector for the STM32F4 family
*
* Copyright (C) 2006-2016, ARM Limited, All Rights Reserved
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#if defined(STM32F405xx) || defined(STM32F415xx) || defined(STM32F407xx) || defined(STM32F417xx) ||\
defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx) ||\
defined(STM32F410Tx) || defined(STM32F410Cx) || defined(STM32F410Rx) || defined(STM32F469xx) ||\
defined(STM32F479xx)
#include <stdlib.h>
#include "cmsis.h"
/* RNG handler declaration */
RNG_HandleTypeDef RngHandle;
/*
* Get one byte of entropy from the RNG, assuming it is up and running.
*/
static void rng_get_byte( unsigned char *byte )
{
*byte = (unsigned char)HAL_RNG_GetRandomNumber(&RngHandle);
}
/*
* Get len bytes of entropy from the hardware RNG.
*/
int mbedtls_hardware_poll( void *data,
unsigned char *output, size_t len, size_t *olen )
{
size_t i;
int ret;
((void) data);
/* RNG Peripheral clock enable */
__HAL_RCC_RNG_CLK_ENABLE();
/* Initialize RNG instance */
RngHandle.Instance = RNG;
HAL_RNG_Init(&RngHandle);
/* Get Random byte */
for( i = 0; i < len; i++ ){
rng_get_byte( output + i );
printf("output %i: %i\n",i,(int)*(output+i));
}
/* Just be extra sure that we didn't do it wrong */
if( ( __HAL_RNG_GET_FLAG(&RngHandle, (RNG_FLAG_CECS|RNG_FLAG_SECS)) ) != 0 )
{
ret = -1;
goto cleanup;
}
*olen = len;
ret = 0;
cleanup:
/*Disable the RNG peripheral */
HAL_RNG_DeInit(&RngHandle);
/* RNG Peripheral clock disable - assume we're the only users of RNG */
__HAL_RCC_RNG_CLK_DISABLE();
return( ret );
}
#endif /* STM32F405xx || STM32F415xx || STM32F407xx || STM32F417xx || STM32F427xx || STM32F437xx ||\
STM32F429xx || STM32F439xx || STM32F410xx || STM32F469xx || STM32F479xx */

77
hal/targets/hal/TARGET_STM/TARGET_STM32F7/entropy_hardware_poll.c Normal file
View File

@ -0,0 +1,77 @@
/*
* Hardware entropy collector for the STM32F7 family
*
* Copyright (C) 2006-2016, ARM Limited, All Rights Reserved
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include <stdlib.h>
#include "cmsis.h"
/* RNG handler declaration */
RNG_HandleTypeDef RngHandle;
/*
* Get one byte of entropy from the RNG, assuming it is up and running.
*/
static void rng_get_byte( unsigned char *byte )
{
*byte = (unsigned char)HAL_RNG_GetRandomNumber(&RngHandle);
}
/*
* Get len bytes of entropy from the hardware RNG.
*/
int mbedtls_hardware_poll( void *data,
unsigned char *output, size_t len, size_t *olen )
{
size_t i;
int ret;
((void) data);
/* RNG Peripheral clock enable */
__HAL_RCC_RNG_CLK_ENABLE();
/* Initialize RNG instance */
RngHandle.Instance = RNG;
HAL_RNG_Init(&RngHandle);
/* Get Random byte */
for( i = 0; i < len; i++ )
rng_get_byte( output + i );
/* Just be extra sure that we didn't do it wrong */
if( ( __HAL_RNG_GET_FLAG(&RngHandle, (RNG_FLAG_CECS|RNG_FLAG_SECS)) ) != 0 )
{
ret = -1;
goto cleanup;
}
*olen = len;
ret = 0;
cleanup:
/*Disable the RNG peripheral */
HAL_RNG_DeInit(&RngHandle);
/* RNG Peripheral clock disable - assume we're the only users of RNG */
__HAL_RCC_RNG_CLK_DISABLE();
return( ret );
}