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/*
* Copyright (c) 2015, Freescale Corporation
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of Mentor Graphics Corporation nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/**************************************************************************
* FILE NAME
*
* platform.c
*
* DESCRIPTION
*
* This file is the Implementation of IPC hardware layer interface
* for Freescale i.MX7 Dual platform.
*
**************************************************************************/
#include "device_imx.h"
#include "platform.h"
#include "plat_porting.h"
#include "mu_imx.h"
extern void freertos_env_isr(int vector);
// uint32_t channel_id;
/*--------------------------- Globals ---------------------------------- */
struct hil_platform_ops proc_ops = {
.enable_interrupt = _enable_interrupt,
.notify = _notify,
.boot_cpu = _boot_cpu,
.shutdown_cpu = _shutdown_cpu,
};
void rpmsg_handler(void)
{
uint32_t msg, channel;
if (MU_TryReceiveMsg(MU0_B, MU_RPMSG_CHANNEL, &msg) == kStatus_MU_Success) {
channel = msg >> 16;
freertos_env_isr(channel);
}
return;
}
int _enable_interrupt(struct proc_vring *vring_hw) { /*enable_interrupt*/
/* Register ISR*/
env_register_isr(vring_hw->intr_info.vect_id, vring_hw, platform_isr);
/*
* Prepare the MU Hardware, enable channel 1 interrupt
*/
MU_EnableRxFullInt(MU0_B, MU_RPMSG_CHANNEL);
return 0;
}
void _notify(int cpu_id, struct proc_intr *intr_info)
{
/*
* As Linux suggests, use MU->Data Channle 1 as communication channel
*/
uint32_t msg = (intr_info->vect_id) << 16;
MU_SendMsg(MU0_B, MU_RPMSG_CHANNEL, msg);
}
int _boot_cpu(int cpu_id, unsigned int load_addr)
{
return 0;
}
void _shutdown_cpu(int cpu_id)
{
}
void platform_isr(int vect_id, void *data)
{
hil_isr(((struct proc_vring *) data));
}
void platform_interrupt_enable()
{
NVIC_EnableIRQ(MU_INT_M4_IRQn);
}
void platform_interrupt_disable()
{
NVIC_DisableIRQ(MU_INT_M4_IRQn);
}
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