| /* port/ti/ti_ccm.c |
| * |
| * Copyright (C) 2006-2015 wolfSSL Inc. |
| * |
| * This file is part of wolfSSL. (formerly known as CyaSSL) |
| * |
| * wolfSSL 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 |
| * (at your option) any later version. |
| * |
| * wolfSSL 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 |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| |
| #include <wolfssl/wolfcrypt/settings.h> |
| |
| #if defined(WOLFSSL_TI_CRYPT) || defined(WOLFSSL_TI_HASH) |
| |
| |
| #include <stdbool.h> |
| #include <stdint.h> |
| |
| #include "driverlib/sysctl.h" |
| #include "driverlib/rom_map.h" |
| #include "driverlib/rom.h" |
| |
| #ifndef SINGLE_THREADED |
| #include <wolfssl/wolfcrypt/wc_port.h> |
| static wolfSSL_Mutex TI_CCM_Mutex ; |
| #endif |
| |
| #define TIMEOUT 500000 |
| #define WAIT(stat) { volatile int i ; for(i=0; i<TIMEOUT; i++)if(stat)break ; if(i==TIMEOUT)return(false) ; } |
| |
| static bool ccm_init = false ; |
| bool wolfSSL_TI_CCMInit(void) |
| { |
| if(ccm_init)return true ; |
| ccm_init = true ; |
| |
| SysCtlClockFreqSet((SYSCTL_XTAL_25MHZ | |
| SYSCTL_OSC_MAIN | |
| SYSCTL_USE_PLL | |
| SYSCTL_CFG_VCO_480), 120000000); |
| |
| if(!ROM_SysCtlPeripheralPresent(SYSCTL_PERIPH_CCM0)) |
| return false ; |
| |
| ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_CCM0); |
| WAIT(ROM_SysCtlPeripheralReady(SYSCTL_PERIPH_CCM0)) ; |
| ROM_SysCtlPeripheralReset(SYSCTL_PERIPH_CCM0); |
| WAIT(ROM_SysCtlPeripheralReady(SYSCTL_PERIPH_CCM0)) ; |
| |
| #ifndef SINGLE_THREADED |
| InitMutex(&TI_CCM_Mutex) ; |
| #endif |
| |
| return true ; |
| } |
| |
| #ifndef SINGLE_THREADED |
| void wolfSSL_TI_lockCCM() { |
| LockMutex(&TI_CCM_Mutex) ; |
| } |
| |
| void wolfSSL_TI_unlockCCM() { |
| UnLockMutex(&TI_CCM_Mutex) ; |
| } |
| #endif |
| |
| #endif |