mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

targets/TARGET_Cypress/TARGET_PSOC6_FUTURE/TARGET_FUTURE_SEQUANA_M0_PSA/spm_init_api.c@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 189:f392fc9709a3 1 /* Copyright (c) 2017-2018 ARM Limited
AnnaBridge 189:f392fc9709a3 2 *
AnnaBridge 189:f392fc9709a3 3 * SPDX-License-Identifier: Apache-2.0
AnnaBridge 189:f392fc9709a3 4 *
AnnaBridge 189:f392fc9709a3 5 * Licensed under the Apache License, Version 2.0 (the "License");
AnnaBridge 189:f392fc9709a3 6 * you may not use this file except in compliance with the License.
AnnaBridge 189:f392fc9709a3 7 * You may obtain a copy of the License at
AnnaBridge 189:f392fc9709a3 8 *
AnnaBridge 189:f392fc9709a3 9 * http://www.apache.org/licenses/LICENSE-2.0
AnnaBridge 189:f392fc9709a3 10 *
AnnaBridge 189:f392fc9709a3 11 * Unless required by applicable law or agreed to in writing, software
AnnaBridge 189:f392fc9709a3 12 * distributed under the License is distributed on an "AS IS" BASIS,
AnnaBridge 189:f392fc9709a3 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
AnnaBridge 189:f392fc9709a3 14 * See the License for the specific language governing permissions and
AnnaBridge 189:f392fc9709a3 15 * limitations under the License.
AnnaBridge 189:f392fc9709a3 16 */
AnnaBridge 189:f392fc9709a3 17
AnnaBridge 189:f392fc9709a3 18
AnnaBridge 189:f392fc9709a3 19 /* -------------------------------------- Includes ----------------------------------- */
AnnaBridge 189:f392fc9709a3 20
AnnaBridge 189:f392fc9709a3 21 #include "spm_api.h"
AnnaBridge 189:f392fc9709a3 22
AnnaBridge 189:f392fc9709a3 23 #include "cmsis.h"
AnnaBridge 189:f392fc9709a3 24 #include "cyip_ipc.h"
AnnaBridge 189:f392fc9709a3 25 #include "cy_ipc_drv.h"
AnnaBridge 189:f392fc9709a3 26 #include "cy_syslib.h"
AnnaBridge 189:f392fc9709a3 27 #include "cy_sysint.h"
AnnaBridge 189:f392fc9709a3 28
AnnaBridge 189:f392fc9709a3 29
AnnaBridge 189:f392fc9709a3 30
AnnaBridge 189:f392fc9709a3 31 /* ------------------------------------ Definitions ---------------------------------- */
AnnaBridge 189:f392fc9709a3 32
AnnaBridge 189:f392fc9709a3 33 #define SPM_IPC_CHANNEL 8u
AnnaBridge 189:f392fc9709a3 34 #define SPM_IPC_NOTIFY_CM0P_INTR (CY_IPC_INTR_SPARE + 2) // CM4 to CM0+ notify interrupt number
AnnaBridge 189:f392fc9709a3 35 #define SPM_IPC_NOTIFY_CM4_INTR (CY_IPC_INTR_SPARE + 1) // CM0+ to CM4 notify interrupt number
AnnaBridge 189:f392fc9709a3 36
AnnaBridge 189:f392fc9709a3 37
AnnaBridge 189:f392fc9709a3 38
AnnaBridge 189:f392fc9709a3 39 /* ---------------------------------- Static Globals --------------------------------- */
AnnaBridge 189:f392fc9709a3 40
AnnaBridge 189:f392fc9709a3 41 static IPC_STRUCT_Type *ipc_channel_handle;
AnnaBridge 189:f392fc9709a3 42 static IPC_INTR_STRUCT_Type *ipc_interrupt_ptr;
AnnaBridge 189:f392fc9709a3 43
AnnaBridge 189:f392fc9709a3 44
AnnaBridge 189:f392fc9709a3 45
AnnaBridge 189:f392fc9709a3 46 /* ------------------------ Platform's Functions Implementation ---------------------- */
AnnaBridge 189:f392fc9709a3 47
AnnaBridge 189:f392fc9709a3 48 void ipc_interrupt_handler(void)
AnnaBridge 189:f392fc9709a3 49 {
AnnaBridge 189:f392fc9709a3 50 // Call ARM's interrupt handler
AnnaBridge 189:f392fc9709a3 51 spm_mailbox_irq_callback();
AnnaBridge 189:f392fc9709a3 52
AnnaBridge 189:f392fc9709a3 53 // Clear the interrupt and make a dummy read to avoid double interrupt occurrence:
AnnaBridge 189:f392fc9709a3 54 // - The double interrupt’s triggering is caused by buffered write operations on bus
AnnaBridge 189:f392fc9709a3 55 // - The dummy read of the status register is indeed required to make sure previous write completed before leaving ISR
AnnaBridge 189:f392fc9709a3 56 // Note: This is a direct clear using the IPC interrupt register and not clear of an NVIC register
AnnaBridge 189:f392fc9709a3 57 Cy_IPC_Drv_ClearInterrupt(ipc_interrupt_ptr, CY_IPC_NO_NOTIFICATION, (1uL << SPM_IPC_CHANNEL));
AnnaBridge 189:f392fc9709a3 58 }
AnnaBridge 189:f392fc9709a3 59
AnnaBridge 189:f392fc9709a3 60 void mailbox_init(void)
AnnaBridge 189:f392fc9709a3 61 {
AnnaBridge 189:f392fc9709a3 62 // Interrupts configuration for CM0+
AnnaBridge 189:f392fc9709a3 63 // * See ce216795_common.h for occupied interrupts
AnnaBridge 189:f392fc9709a3 64 // -----------------------------------------------
AnnaBridge 189:f392fc9709a3 65
AnnaBridge 189:f392fc9709a3 66 // Configure interrupts ISR / MUX and priority
AnnaBridge 189:f392fc9709a3 67 cy_stc_sysint_t ipc_intr_Config;
AnnaBridge 189:f392fc9709a3 68 ipc_intr_Config.intrSrc = (IRQn_Type)NvicMux3_IRQn; // Can be any Mux we choose
AnnaBridge 189:f392fc9709a3 69 ipc_intr_Config.cm0pSrc = (cy_en_intr_t)cpuss_interrupts_ipc_0_IRQn + SPM_IPC_NOTIFY_CM0P_INTR; // Must match the interrupt we trigger using NOTIFY on CM4
AnnaBridge 189:f392fc9709a3 70 ipc_intr_Config.intrPriority = 1;
AnnaBridge 189:f392fc9709a3 71 (void)Cy_SysInt_Init(&ipc_intr_Config, ipc_interrupt_handler);
AnnaBridge 189:f392fc9709a3 72
AnnaBridge 189:f392fc9709a3 73 // Set specific NOTIFY interrupt mask only.
AnnaBridge 189:f392fc9709a3 74 // Only the interrupt sources with their masks enabled can trigger the interrupt.
AnnaBridge 189:f392fc9709a3 75 ipc_interrupt_ptr = Cy_IPC_Drv_GetIntrBaseAddr(SPM_IPC_NOTIFY_CM0P_INTR);
AnnaBridge 189:f392fc9709a3 76 CY_ASSERT(ipc_interrupt_ptr != NULL);
AnnaBridge 189:f392fc9709a3 77 Cy_IPC_Drv_SetInterruptMask(ipc_interrupt_ptr, 0x0, 1 << SPM_IPC_CHANNEL);
AnnaBridge 189:f392fc9709a3 78
AnnaBridge 189:f392fc9709a3 79 // Enable the interrupt
AnnaBridge 189:f392fc9709a3 80 NVIC_EnableIRQ(ipc_intr_Config.intrSrc);
AnnaBridge 189:f392fc9709a3 81
AnnaBridge 189:f392fc9709a3 82 ipc_channel_handle = Cy_IPC_Drv_GetIpcBaseAddress(SPM_IPC_CHANNEL);
AnnaBridge 189:f392fc9709a3 83 CY_ASSERT(ipc_channel_handle != NULL);
AnnaBridge 189:f392fc9709a3 84 }
AnnaBridge 189:f392fc9709a3 85
AnnaBridge 189:f392fc9709a3 86
AnnaBridge 189:f392fc9709a3 87
AnnaBridge 189:f392fc9709a3 88 /* -------------------------------------- HAL API ------------------------------------ */
AnnaBridge 189:f392fc9709a3 89
AnnaBridge 189:f392fc9709a3 90 void spm_hal_mailbox_notify(void)
AnnaBridge 189:f392fc9709a3 91 {
AnnaBridge 189:f392fc9709a3 92 CY_ASSERT(ipc_channel_handle != NULL);
AnnaBridge 189:f392fc9709a3 93 Cy_IPC_Drv_AcquireNotify(ipc_channel_handle, (1uL << SPM_IPC_NOTIFY_CM4_INTR));
AnnaBridge 189:f392fc9709a3 94 }