mirror of https://github.com/ARMmbed/mbed-os.git
138 lines
3.8 KiB
C
138 lines
3.8 KiB
C
/*
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* Copyright (c) 2017-2018, Nuvoton Technology Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <arm_cmse.h>
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#include "mbed_assert.h"
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#include "pinmap.h"
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#include "PortNames.h"
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#include "PeripheralNames.h"
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#include "mbed_error.h"
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#include "partition_M2351.h"
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#include "hal_secure.h"
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#if defined(DOMAIN_NS) && (DOMAIN_NS == 1L) && (TFM_LVL > 0)
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#include "tfm_ns_lock.h"
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#endif
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/**
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* Configure pin multi-function
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*/
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void pin_function(PinName pin, int data)
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{
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pin_function_s(pin, data);
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}
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/**
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* Configure pin pull-up/pull-down
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*/
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void pin_mode(PinName pin, PinMode mode)
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{
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MBED_ASSERT(pin != (PinName)NC);
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uint32_t pin_index = NU_PINNAME_TO_PIN(pin);
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uint32_t port_index = NU_PINNAME_TO_PORT(pin);
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GPIO_T *gpio_base = NU_PORT_BASE(port_index);
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uint32_t mode_intern = GPIO_MODE_INPUT;
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switch (mode) {
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case InputOnly:
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mode_intern = GPIO_MODE_INPUT;
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break;
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case PushPullOutput:
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mode_intern = GPIO_MODE_OUTPUT;
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break;
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case OpenDrain:
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mode_intern = GPIO_MODE_OPEN_DRAIN;
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break;
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case QuasiBidirectional:
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mode_intern = GPIO_MODE_QUASI;
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break;
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default:
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/* H/W doesn't support separate configuration for input pull mode/direction.
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* We expect upper layer would have translated input pull mode/direction
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* to I/O mode */
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return;
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}
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GPIO_SetMode(gpio_base, 1 << pin_index, mode_intern);
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/* Invalid combinations of PinMode/PinDirection
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*
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* We assume developer would avoid the following combinations of PinMode/PinDirection
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* which are invalid:
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* 1. InputOnly/PIN_OUTPUT
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* 2. PushPullOutput/PIN_INPUT
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*/
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}
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#if defined(__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
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static void pin_function_impl(int32_t pin, int32_t data, bool nonsecure_caller)
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{
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MBED_ASSERT(pin != (PinName)NC);
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uint32_t pin_index = NU_PINNAME_TO_PIN(pin);
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uint32_t port_index = NU_PINNAME_TO_PORT(pin);
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/* Guard access to secure GPIO from non-secure domain */
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if (nonsecure_caller &&
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(! (SCU_INIT_IONSSET_VAL & (1 << (port_index + 0))))) {
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error("Non-secure domain tries to control secure or undefined GPIO.");
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}
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__IO uint32_t *GPx_MFPx = ((__IO uint32_t *) &SYS->GPA_MFPL) + port_index * 2 + (pin_index / 8);
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uint32_t MFP_Msk = NU_MFP_MSK(pin_index);
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// E.g.: SYS->GPA_MFPL = (SYS->GPA_MFPL & (~SYS_GPA_MFPL_PA0MFP_Msk) ) | SYS_GPA_MFPL_PA0MFP_SC0_CD ;
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*GPx_MFPx = (*GPx_MFPx & (~MFP_Msk)) | data;
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}
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#if (TFM_LVL > 0)
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__NONSECURE_ENTRY
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int32_t pin_function_veneer(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint32_t arg3)
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{
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int32_t pin = (int32_t) arg0;
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int32_t data = (int32_t) arg1;
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pin_function_impl(pin, data, cmse_nonsecure_caller());
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return 0;
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}
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#endif
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#endif
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#if defined(DOMAIN_NS) && (DOMAIN_NS == 1) && (TFM_LVL > 0)
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void pin_function_s(int32_t pin, int32_t data)
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{
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tfm_ns_lock_dispatch(pin_function_veneer, pin, data, 0, 0);
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}
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#elif defined(__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
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#if (TFM_LVL == 0)
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__NONSECURE_ENTRY
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#endif
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void pin_function_s(int32_t pin, int32_t data)
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{
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pin_function_impl(pin, data, cmse_nonsecure_caller());
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}
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#endif
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