mirror of https://github.com/RT-Thread/rt-thread
bsp: k230: add watchdog support
K230 has two watchdog timers. Add unit tests based on utest framework. Watchdog and test are both configuable, disabled by default. Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
This commit is contained in:
Chen Wang
Rbb666
parent
8f8354347e
commit
951bc922bc
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@ -1497,6 +1497,8 @@ CONFIG_BSP_USING_SDIO0=y
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# CONFIG_BSP_SDIO0_1V8 is not set
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# CONFIG_BSP_USING_SDIO1 is not set
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CONFIG_BSP_SD_MNT_DEVNAME="sd0p1"
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# CONFIG_BSP_USING_WDT is not set
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# CONFIG_BSP_UTEST_DRIVERS is not set
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# end of Drivers Configuration
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CONFIG_BOARD_fpgac908=y
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@ -39,4 +39,25 @@ menu "Drivers Configuration"
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default "sd0p1"
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endif
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menuconfig BSP_USING_WDT
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bool "Enable Watchdog Timer"
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select RT_USING_WDT
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default n
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if BSP_USING_WDT
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config BSP_USING_WDT0
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bool "Enable WDT0"
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default n
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config BSP_USING_WDT1
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bool "Enable WDT1"
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default n
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endif
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config BSP_UTEST_DRIVERS
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bool "Enable drivers utest"
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select RT_USING_UTEST
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default n
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endmenu
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@ -0,0 +1,19 @@
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# RT-Thread building script for component
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from building import *
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cwd = GetCurrentDir()
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src = Glob('*.c')
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CPPPATH = [cwd]
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group = DefineGroup('WDT', src, depend = ['BSP_USING_WDT'], CPPPATH = CPPPATH)
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objs = [group]
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list = os.listdir(cwd)
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for item in list:
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if os.path.isfile(os.path.join(cwd, item, 'SConscript')):
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objs = objs + SConscript(os.path.join(item, 'SConscript'))
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Return('objs')
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@ -0,0 +1,274 @@
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/* Copyright (c) 2023, Canaan Bright Sight Co., Ltd
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 2006-2025, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <rtthread.h>
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#include <rtdevice.h>
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#include <riscv_io.h>
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#include "board.h"
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#include "ioremap.h"
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#include "sysctl_clk.h"
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#include "drv_wdt.h"
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#include <rtdbg.h>
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#include <sys/ioctl.h>
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struct k230_wdt_dev
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{
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struct rt_watchdog_device device;
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const char *name;
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rt_ubase_t base;
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size_t size;
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sysctl_clk_node_e clk; /* clock source */
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};
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/* There are sixteen TOPs (timeout periods) that can be set in the watchdog. */
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static const rt_uint32_t *tops;
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static const rt_uint32_t k230_wdt_fix_tops[KD_WDT_NUM_TOPS] = {
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KD_WDT_FIX_TOP(0), KD_WDT_FIX_TOP(1), KD_WDT_FIX_TOP(2),
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KD_WDT_FIX_TOP(3), KD_WDT_FIX_TOP(4), KD_WDT_FIX_TOP(5),
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KD_WDT_FIX_TOP(6), KD_WDT_FIX_TOP(7), KD_WDT_FIX_TOP(8),
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KD_WDT_FIX_TOP(9), KD_WDT_FIX_TOP(10), KD_WDT_FIX_TOP(11),
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KD_WDT_FIX_TOP(12), KD_WDT_FIX_TOP(13), KD_WDT_FIX_TOP(14),
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KD_WDT_FIX_TOP(15)
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};
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static struct k230_wdt_timeout timeouts[KD_WDT_NUM_TOPS];
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static char rmod; /* wdt reset mode, */
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static void k230_wdt_timeouts_init(struct k230_wdt_dev *dev)
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{
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rt_uint32_t wdt_clk;
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rt_uint32_t time_value;
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rt_uint32_t i, t;
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rt_uint64_t msec;
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struct k230_wdt_timeout tout, *dst;
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/* caculate timeout value */
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wdt_clk = sysctl_clk_get_leaf_freq(dev->clk);
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for (i = 0; i < KD_WDT_NUM_TOPS; ++i)
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{
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tout.top_val = i;
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tout.sec = tops[i] / wdt_clk;
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msec = (rt_uint64_t)tops[i] * (rt_uint64_t)1000L;
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msec = msec / wdt_clk;
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tout.msec = msec - (rt_uint64_t)tout.sec * (rt_uint64_t)1000L;
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for (t = 0; t < i; ++t)
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{
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dst = &timeouts[t];
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if (tout.sec > dst->sec || (tout.sec == dst->sec &&
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tout.msec >= dst->msec))
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continue;
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else
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swap(*dst, tout);
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}
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timeouts[i] = tout;
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}
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rt_kprintf("watchdog timeout table init OK!\n");
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}
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static rt_err_t k230_wdt_feed(struct k230_wdt_dev *dev)
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{
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k230_wdt_t *reg = (k230_wdt_t *)dev->base;
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reg->crr = 0x76;
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return RT_EOK;
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}
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static rt_err_t k230_wdt_enable(struct k230_wdt_dev *dev)
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{
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k230_wdt_t *reg = (k230_wdt_t *)dev->base;
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reg->crr = 0x76;
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reg->cr |= 0x1;
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return RT_EOK;
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}
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static rt_err_t k230_wdt_disable(struct k230_wdt_dev *dev)
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{
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k230_wdt_t *reg = (k230_wdt_t *)dev->base;
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reg->crr = 0x76;
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reg->cr &= ~0x1;
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return RT_EOK;
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}
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static rt_err_t k230_wdt_set_timeout(struct k230_wdt_dev *dev, rt_uint64_t timeout)
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{
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k230_wdt_t *reg = (k230_wdt_t *)dev->base;
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rt_uint32_t top_val;
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rt_uint32_t i;
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rt_uint32_t time = (timeout + rmod -1) / rmod;
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for (i = 0; i < KD_WDT_NUM_TOPS; ++i)
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{
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if (timeouts[i].sec >= time)
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break;
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}
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if (i == KD_WDT_NUM_TOPS)
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--i;
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top_val = timeouts[i].top_val;
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reg->torr = (top_val << 4) | (top_val << 0);
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return RT_EOK;
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}
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static rt_err_t k230_wdt_get_timeout(struct k230_wdt_dev *dev, void *timeout)
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{
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rt_uint64_t top_val;
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rt_uint32_t i;
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k230_wdt_t *reg = (k230_wdt_t *)dev->base;
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top_val = ((reg->torr) & 0xf);
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for (i = 0; i < KD_WDT_NUM_TOPS; ++i)
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{
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if (timeouts[i].top_val == top_val)
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break;
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}
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*((rt_uint64_t *)timeout) = timeouts[i].sec * rmod;
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return RT_EOK;
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}
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static rt_err_t k230_wdt_init(rt_watchdog_t *wdt)
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{
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RT_ASSERT(wdt != NULL);
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struct k230_wdt_dev *dev = rt_container_of(wdt, struct k230_wdt_dev, device);
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k230_wdt_t *reg = (k230_wdt_t *)dev->base;
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reg->cr &= ~(0x01 << 1);
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reg->cr |= (0x0 << 1); /* default set wdt reset mode */
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rmod = KD_WDT_RMOD_RESET;
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if (reg->comp_param_1 & (1 << 6))
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{
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tops = k230_wdt_fix_tops;
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}
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k230_wdt_timeouts_init(dev);
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if (!timeouts[KD_WDT_NUM_TOPS - 1].sec)
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{
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rt_kprintf("No any valid Timeout period detected\n");
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return -RT_EINVAL;
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}
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return RT_EOK;
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}
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static rt_err_t k230_wdt_control(rt_watchdog_t *wdt, int cmd, void *args)
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{
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RT_ASSERT(wdt != NULL);
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struct k230_wdt_dev *dev = rt_container_of(wdt, struct k230_wdt_dev, device);
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switch(cmd)
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{
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case KD_DEVICE_CTRL_WDT_GET_TIMEOUT:
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k230_wdt_get_timeout(dev, args);
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break;
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case KD_DEVICE_CTRL_WDT_SET_TIMEOUT:
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k230_wdt_set_timeout(dev, *((rt_uint32_t*)args));
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break;
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case KD_DEVICE_CTRL_WDT_KEEPALIVE:
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k230_wdt_feed(dev);
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break;
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case KD_DEVICE_CTRL_WDT_START:
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k230_wdt_enable(dev);
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break;
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case RT_DEVICE_CTRL_WDT_STOP:
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case KD_DEVICE_CTRL_WDT_STOP:
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k230_wdt_disable(dev);
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break;
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default:
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return -RT_EINVAL;
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}
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return RT_EOK;
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}
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static struct rt_watchdog_ops k230_wdt_ops =
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{
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.init = k230_wdt_init,
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.control = k230_wdt_control,
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};
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static struct k230_wdt_dev wdt_devices[] =
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{
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#ifdef BSP_USING_WDT0
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{
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.name = "wdt0",
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.base = WDT0_BASE_ADDR,
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.size = WDT0_IO_SIZE,
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.clk = SYSCTL_CLK_WDT0,
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},
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#endif /* BSP_USING_WDT0 */
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#ifdef BSP_USING_WDT1
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{
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.name = "wdt1",
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.base = WDT1_BASE_ADDR,
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.size = WDT1_IO_SIZE,
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.clk = SYSCTL_CLK_WDT1,
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},
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#endif /* BSP_USING_WDT1 */
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#if !defined(BSP_USING_WDT0) && !defined(BSP_USING_WDT1)
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#error "No watchdog device defined!"
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#endif
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};
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int rt_hw_wdt_init(void)
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{
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rt_uint8_t i;
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for (i = 0; i < sizeof(wdt_devices) / sizeof(struct k230_wdt_dev); i++)
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{
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wdt_devices[i].device.ops = &k230_wdt_ops;
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wdt_devices[i].base = (rt_ubase_t)rt_ioremap((void *)wdt_devices[i].base, wdt_devices[i].size);
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if (rt_hw_watchdog_register(&wdt_devices[i].device, wdt_devices[i].name, RT_DEVICE_FLAG_RDWR, RT_NULL) != RT_EOK)
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{
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LOG_E("%s register failed!", wdt_devices[i].name);
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return -RT_ERROR;
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}
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LOG_D("%s register OK!", wdt_devices[i].name);
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}
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return RT_EOK;
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}
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INIT_DEVICE_EXPORT(rt_hw_wdt_init);
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@ -0,0 +1,73 @@
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/*
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* Copyright (c) 2006-2025, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef DRV_WDT_H_
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#define DRV_WDT_H_
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#include <drivers/dev_watchdog.h>
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#include <sys/ioctl.h>
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#define DEFUALT_TIMEOUT 30*1000 /* ms */
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#define KD_WDT_NUM_TOPS 16
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#define KD_WDT_FIX_TOP(_idx) (1U << (16 + _idx))
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#define KD_WDT_RMOD_RESET 1
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#define KD_WDT_RMOD_IRQ 2
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#define KD_DEVICE_CTRL_WDT_GET_TIMEOUT _IOW('W', 1, int) /* get timeout(in seconds) */
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#define KD_DEVICE_CTRL_WDT_SET_TIMEOUT _IOW('W', 2, int) /* set timeout(in seconds) */
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#define KD_DEVICE_CTRL_WDT_GET_TIMELEFT _IOW('W', 3, int) /* get the left time before reboot(in seconds) */
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#define KD_DEVICE_CTRL_WDT_KEEPALIVE _IOW('W', 4, int) /* refresh watchdog */
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#define KD_DEVICE_CTRL_WDT_START _IOW('W', 5, int) /* start watchdog */
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#define KD_DEVICE_CTRL_WDT_STOP _IOW('W', 6, int) /* stop watchdog */
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struct k230_wdt_timeout {
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rt_uint32_t top_val;
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rt_uint32_t sec;
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rt_uint32_t msec;
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};
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#define swap(a, b) \
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do { struct k230_wdt_timeout __tmp = (a); (a) = (b); (b) = __tmp; } while (0)
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/* wdt register map */
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typedef struct _wdt
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{
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/* WDT Control Register (0x00) */
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volatile uint32_t cr;
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/* WDT Timeout Range Register (0x04) */
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volatile uint32_t torr;
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/* WDT Current Counter Value Register (0x08) */
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volatile uint32_t ccvr;
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/* WDT Counter Restart Register (0x0c) */
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volatile uint32_t crr;
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/* WDT Interrupt Status Register (0x10) */
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volatile uint32_t stat;
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/* WDT Interrupt Clear Register (0x14) */
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volatile uint32_t eoi;
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/* reserverd (0x18) */
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volatile uint32_t resv1;
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/* WDT Protection level Register (0x1c) */
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volatile uint32_t prot_level;
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/* reserved (0x20-0xe0) */
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volatile uint32_t resv4[49];
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/* WDT Component Parameters Register 5 (0xe4) */
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volatile uint32_t comp_param_5;
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/* WDT Component Parameters Register 4 (0xe8) */
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volatile uint32_t comp_param_4;
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/* WDT Component Parameters Register 3 (0xec) */
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volatile uint32_t comp_param_3;
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/* WDT Component Parameters Register 2 (0xf0) */
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volatile uint32_t comp_param_2;
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/* WDT Component Parameters Register 1 (0xf4) */
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volatile uint32_t comp_param_1;
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/* WDT Component Version Register (0xf8) */
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volatile uint32_t comp_version;
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/* WDT Component Type Register (0xfc) */
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volatile uint32_t comp_type;
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} __attribute__((packed, aligned(4))) k230_wdt_t;
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#endif /* DRV_WDT_H_ */
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@ -0,0 +1,12 @@
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from building import *
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src = []
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if GetDepend('RT_UTEST_USING_ALL_CASES') or GetDepend('BSP_UTEST_DRIVERS'):
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if GetDepend('BSP_USING_WDT'):
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src += ['test_wdt.c']
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group = DefineGroup('utestcases', src, depend = [''])
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Return('group')
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@ -0,0 +1,170 @@
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/*
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* Copyright (c) 2006-2025, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/*
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* Refer to https://www.rt-thread.org/document/api/iwdg_sample_8c-example.html
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* This is a watchdog device test routine, the program searches for the watchdog
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* device by device name, then initializes the device and sets the watchdog
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* device overflow time.
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*
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* "test_wdt_feed" tests that the watchdog timer will not time out when the
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* watchdog is fed and will not cause the system to restart.
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*
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* "test_wdt_nofeed" tests that the watchdog timer will time out when the
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* watchdog is not fed and cause the system to restart.
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*/
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#include <rtthread.h>
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#include <rtdevice.h>
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#include "../interdrv/wdt/drv_wdt.h"
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#include "utest.h"
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/* Default watchdog device name */
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/* If WDT0 and WDT1 both enabled, we use WDT0 */
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#ifdef BSP_USING_WDT0
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#define IWDG_DEVICE_NAME "wdt0"
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#elif defined(BSP_USING_WDT1)
|
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#define IWDG_DEVICE_NAME "wdt1"
|
||||
#else
|
||||
#error "No watchdog device defined!"
|
||||
#endif
|
||||
|
||||
/* Watchdog device handle */
|
||||
static rt_device_t wdg_dev;
|
||||
|
||||
/*
|
||||
* Dog feeding flag, 1 means feeding the dog, 0 means not feeding the dog.
|
||||
* This flag is used in the idle thread callback function.
|
||||
* If the dog is not fed, the system will restart due to watchdog timeout.
|
||||
*/
|
||||
static int flag_feed;
|
||||
|
||||
/* Overflow time, in seconds. */
|
||||
static rt_uint32_t timeout = 3;
|
||||
|
||||
static void idle_hook(void)
|
||||
{
|
||||
/* Feed the dog in the callback function of the idle thread */
|
||||
if (flag_feed)
|
||||
rt_device_control(wdg_dev, KD_DEVICE_CTRL_WDT_KEEPALIVE, NULL);
|
||||
|
||||
/* Do not print, otherwise the screen will display too much. */
|
||||
}
|
||||
|
||||
static void waiting_for_timeout(int seconds)
|
||||
{
|
||||
LOG_I("Waiting for watchdog timer time-out...\n");
|
||||
for (int i = 0; i < seconds; i++)
|
||||
{
|
||||
rt_thread_mdelay(1000);
|
||||
LOG_I(".");
|
||||
}
|
||||
}
|
||||
|
||||
static void test_wdt_feed(void)
|
||||
{
|
||||
rt_err_t ret = RT_EOK;
|
||||
|
||||
/* Find the watchdog device according to the name and obtain the handle */
|
||||
wdg_dev = rt_device_find(IWDG_DEVICE_NAME);
|
||||
if (!wdg_dev)
|
||||
{
|
||||
LOG_E("find %s failed!\n", IWDG_DEVICE_NAME);
|
||||
return;
|
||||
}
|
||||
|
||||
/* Initialize the device */
|
||||
ret = rt_device_init(wdg_dev);
|
||||
if (ret != RT_EOK)
|
||||
{
|
||||
LOG_E("initialize %s failed!\n", IWDG_DEVICE_NAME);
|
||||
return;
|
||||
}
|
||||
|
||||
/* Set the watchdog timeout time */
|
||||
ret = rt_device_control(wdg_dev, KD_DEVICE_CTRL_WDT_SET_TIMEOUT, &timeout);
|
||||
if (ret != RT_EOK)
|
||||
{
|
||||
LOG_E("set %s timeout failed!\n", IWDG_DEVICE_NAME);
|
||||
return;
|
||||
}
|
||||
|
||||
flag_feed = 1; /* Set feed the dog sign */
|
||||
|
||||
/* start watchdog timer */
|
||||
rt_device_control(wdg_dev, KD_DEVICE_CTRL_WDT_START, RT_NULL);
|
||||
LOG_I("Watchdog Timer [%s] is launched!\n", IWDG_DEVICE_NAME);
|
||||
|
||||
/* Delay enough time to see if the system will be restarted by the watchdog */
|
||||
waiting_for_timeout(10);
|
||||
|
||||
LOG_I("Thanks for feeding me, I'm still alive!\n");
|
||||
/* If you feed the dog successfully, you will have a chance to come here and close the gate dog. */
|
||||
rt_device_close(wdg_dev);
|
||||
LOG_I("Watchdog is closed!\n");
|
||||
|
||||
LOG_I("Test Done with Feed!\n");
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
static void test_wdt_nofeed(void)
|
||||
{
|
||||
rt_err_t ret = RT_EOK;
|
||||
|
||||
/* Find the watchdog device according to the name and obtain the handle */
|
||||
wdg_dev = rt_device_find(IWDG_DEVICE_NAME);
|
||||
if (!wdg_dev)
|
||||
{
|
||||
LOG_E("find %s failed!\n", IWDG_DEVICE_NAME);
|
||||
return;
|
||||
}
|
||||
|
||||
/* Initialize the device */
|
||||
ret = rt_device_init(wdg_dev);
|
||||
if (ret != RT_EOK)
|
||||
{
|
||||
LOG_E("initialize %s failed!\n", IWDG_DEVICE_NAME);
|
||||
return;
|
||||
}
|
||||
|
||||
/* Set the watchdog timeout time */
|
||||
ret = rt_device_control(wdg_dev, KD_DEVICE_CTRL_WDT_SET_TIMEOUT, &timeout);
|
||||
if (ret != RT_EOK)
|
||||
{
|
||||
LOG_E("set %s timeout failed!\n", IWDG_DEVICE_NAME);
|
||||
return;
|
||||
}
|
||||
|
||||
flag_feed = 0; /* Do not feed the dog */
|
||||
|
||||
rt_device_control(wdg_dev, KD_DEVICE_CTRL_WDT_START, RT_NULL);
|
||||
LOG_I("Watchdog Timer [%s] is launched!\n", IWDG_DEVICE_NAME);
|
||||
|
||||
/* Delay long enough and the system should reboot due to watchdog timeout. */
|
||||
LOG_I("Oops, I am so hungary and will be killed in seconds!\n");
|
||||
waiting_for_timeout(10);
|
||||
|
||||
LOG_I("SHOULD NOT SEE THIS PRINT!\n");
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
static void test_wdt (void)
|
||||
{
|
||||
UTEST_UNIT_RUN(test_wdt_feed);
|
||||
UTEST_UNIT_RUN(test_wdt_nofeed);
|
||||
}
|
||||
|
||||
static rt_err_t utest_init(void)
|
||||
{
|
||||
flag_feed = 0;
|
||||
rt_thread_idle_sethook(idle_hook);
|
||||
return RT_EOK;
|
||||
}
|
||||
|
||||
UTEST_TC_EXPORT(test_wdt, "wdt", utest_init, NULL, 10);
|
||||
Loading…
Reference in New Issue