os-core/kernel/core/irq.c

/******************************************************************************
 *
 *                Copyright (c) 2017-2019 by Löwenware Ltd
 *             Please, refer LICENSE file for legal information
 *
 ******************************************************************************/

/**
 * @file irq.c
 * @author Ilja Kartašov <ik@lowenware.com>
 * @brief 
 *
 * @see https://lowenware.com/
 */

#include <aarch64/bcm2837.h>
#include "timer.h"
#include "log.h"
#include "irq.h"

static const char *m_types[] = {
	"EL1t_SYNC",
	"EL1t_IRQ",
	"EL1t_FIQ",
	"EL1t_ERROR",
	"EL1h_SYNC",
	"EL1h_IRQ",
	"EL1h_FIQ",
	"EL1h_ERROR",
	"EL0_64_SYNC",
	"EL0_64_IRQ",
	"EL0_64_FIQ",
	"EL0_64_ERROR",
	"EL0_32_SYNC",
	"EL0_32_IRQ",
	"EL0_32_FIQ",
	"EL0_32_ERROR"
};

void
k_irq_enable_controller()
{
	aarch64_set32r(ENABLE_IRQS_1, SYSTEM_TIMER_IRQ_1);
}

void
k_irq_handler(void)
{
	unsigned int irq = aarch64_get32r(IRQ_PENDING_1);
	switch(irq) {
	case SYSTEM_TIMER_IRQ_1:
		k_timer_irq_handler();
		break;

	default:
		k_logs("Unhandled irq: ");
		k_logu(irq, 16);
		k_logs("\n");
	}
}

void
k_irq_fallback(int type, unsigned long esr, unsigned long address)
{
	k_logs(m_types[type]);
	k_logs(" -> ESR: ");
	k_logu(esr, 16);
	k_logs(", address: ");
	k_logu(address, 16);
	k_logs("\r\n");
}