141 lines
3.1 KiB
C
141 lines
3.1 KiB
C
/*
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* Copyright (c) 2006-2021, 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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* Change Logs:
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* Date Author Notes
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*2021-06-10 xiaoyu implement rt_hw_us_delay()
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*/
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#include <rthw.h>
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#include <rtthread.h>
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#include "board.h"
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#include "tick.h"
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#include "drv_uart.h"
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#include "encoding.h"
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#include "fpioa.h"
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#include "dmac.h"
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#include "dmalock.h"
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void init_bss(void)
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{
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unsigned int *dst;
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dst = &__bss_start;
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while (dst < &__bss_end)
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{
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*dst++ = 0;
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}
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}
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void primary_cpu_entry(void)
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{
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extern void entry(void);
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/* disable global interrupt */
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init_bss();
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rt_hw_interrupt_disable();
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entry();
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}
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#include <clint.h>
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#include <sysctl.h>
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int freq(void)
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{
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rt_uint64_t value = 0;
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value = sysctl_clock_get_freq(SYSCTL_CLOCK_PLL0);
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rt_kprintf("PLL0: %d\n", value);
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value = sysctl_clock_get_freq(SYSCTL_CLOCK_PLL1);
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rt_kprintf("PLL1: %d\n", value);
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value = sysctl_clock_get_freq(SYSCTL_CLOCK_PLL2);
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rt_kprintf("PLL2: %d\n", value);
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value = sysctl_clock_get_freq(SYSCTL_CLOCK_CPU);
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rt_kprintf("CPU : %d\n", value);
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value = sysctl_clock_get_freq(SYSCTL_CLOCK_APB0);
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rt_kprintf("APB0: %d\n", value);
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value = sysctl_clock_get_freq(SYSCTL_CLOCK_APB1);
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rt_kprintf("APB1: %d\n", value);
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value = sysctl_clock_get_freq(SYSCTL_CLOCK_APB2);
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rt_kprintf("APB2: %d\n", value);
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value = sysctl_clock_get_freq(SYSCTL_CLOCK_HCLK);
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rt_kprintf("HCLK: %d\n", value);
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value = clint_get_time();
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rt_kprintf("mtime: %d\n", value);
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return 0;
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}
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MSH_CMD_EXPORT(freq, show freq info);
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#ifdef RT_USING_SMP
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extern int rt_hw_clint_ipi_enable(void);
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#endif
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void rt_hw_board_init(void)
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{
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sysctl_pll_set_freq(SYSCTL_PLL0, 800000000UL);
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sysctl_pll_set_freq(SYSCTL_PLL1, 400000000UL);
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sysctl_pll_set_freq(SYSCTL_PLL2, 45158400UL);
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sysctl_clock_set_threshold(SYSCTL_THRESHOLD_APB1, 2);
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/* Init FPIOA */
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fpioa_init();
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/* Dmac init */
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dmac_init();
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dmalock_init();
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/* initalize interrupt */
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rt_hw_interrupt_init();
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/* initialize hardware interrupt */
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rt_hw_uart_init();
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rt_hw_tick_init();
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#ifdef RT_USING_SMP
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rt_hw_clint_ipi_enable();
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#endif
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#if defined(RT_USING_CONSOLE) && defined(RT_USING_DEVICE)
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/* set console device */
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rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
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#endif
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#ifdef RT_USING_HEAP
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rt_kprintf("heap: [0x%08x - 0x%08x]\n", (rt_ubase_t) RT_HW_HEAP_BEGIN, (rt_ubase_t) RT_HW_HEAP_END);
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/* initialize memory system */
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rt_system_heap_init(RT_HW_HEAP_BEGIN, RT_HW_HEAP_END);
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#endif
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#ifdef RT_USING_COMPONENTS_INIT
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rt_components_board_init();
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#endif
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}
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void rt_hw_cpu_reset(void)
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{
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sysctl->soft_reset.soft_reset = 1;
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while(1);
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}
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MSH_CMD_EXPORT_ALIAS(rt_hw_cpu_reset, reboot, reset machine);
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/**
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* This function will delay for some us.
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*
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* @param us the delay time of us
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*/
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void rt_hw_us_delay(rt_uint32_t usec)
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{
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rt_uint32_t cycle = read_cycle();
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rt_uint32_t nop_all = usec * sysctl_clock_get_freq(SYSCTL_CLOCK_CPU) / 1000000UL;
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while (1)
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{
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if(read_cycle() - cycle >= nop_all)
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break;
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}
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}
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