59 lines
1.2 KiB
C
59 lines
1.2 KiB
C
/*
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* Copyright (c) 2019, Intel Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <common/debug.h>
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#include <lib/mmio.h>
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#include <platform_def.h>
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#include "watchdog.h"
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/* Reset watchdog timer */
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void watchdog_sw_rst(void)
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{
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mmio_write_32(WDT_CRR, WDT_SW_RST);
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}
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/* Print component information */
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void watchdog_info(void)
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{
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INFO("Component Type : %x\r\n", mmio_read_32(WDT_COMP_VERSION));
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INFO("Component Version : %x\r\n", mmio_read_32(WDT_COMP_TYPE));
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}
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/* Check watchdog current status */
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void watchdog_status(void)
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{
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if (mmio_read_32(WDT_CR) & 1) {
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INFO("Watchdog Timer in currently enabled\n");
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INFO("Current Counter : 0x%x\r\n", mmio_read_32(WDT_CCVR));
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} else {
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INFO("Watchdog Timer in currently disabled\n");
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}
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}
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/* Initialize & enable watchdog */
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void watchdog_init(int watchdog_clk)
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{
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uint8_t cycles_i = 0;
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uint32_t wdt_cycles = WDT_MIN_CYCLES;
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uint32_t top_init_cycles = WDT_PERIOD * watchdog_clk;
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while ((cycles_i < 15) && (wdt_cycles < top_init_cycles)) {
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wdt_cycles = (wdt_cycles << 1);
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cycles_i++;
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}
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mmio_write_32(WDT_TORR, (cycles_i << 4) | cycles_i);
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watchdog_enable();
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}
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void watchdog_enable(void)
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{
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mmio_write_32(WDT_CR, WDT_CR_RMOD|WDT_CR_EN);
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}
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