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42ce237dc9
1. 去除start_gcc.s中set_secondary_cpu_boot_address代码，这部分提取到qemu-vexpress-a9 bsp中。 2. 移动cpu.c中rt_hw_cpu_id函数到cp15_gcc.s，使用汇编实现，采用wake属性，方便bsp根据cpu特性获取CPU ID（多cpu集群中，不同厂家使用组合不一样）. 3. 整理start_gcc.s 适应多核启动，原来的代码只考虑到双核的情况。
66 lines
1.3 KiB
C
66 lines
1.3 KiB
C
/*
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* Copyright (c) 2006-2018, 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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* 2018-11-22 Jesven first version
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*/
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#include <rthw.h>
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#include <rtthread.h>
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#include <stdint.h>
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#include "board.h"
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#include "gic.h"
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#include "drv_timer.h"
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#ifdef RT_USING_SMP
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#include <interrupt.h>
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static void rt_hw_timer2_isr(int vector, void *param)
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{
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rt_tick_increase();
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/* clear interrupt */
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timer_clear_pending(0);
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}
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void set_secondary_cpu_boot_address(void)
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{
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extern void secondary_cpu_start(void);
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uint32_t *boot_address = (uint32_t *)0x10000030;
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*(boot_address + 1) = ~0ul;
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*boot_address = (uint32_t )&secondary_cpu_start;
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}
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void rt_hw_secondary_cpu_up(void)
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{
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set_secondary_cpu_boot_address();
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__asm__ volatile ("dsb":::"memory");
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rt_hw_ipi_send(0, 1 << 1);
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}
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void secondary_cpu_c_start(void)
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{
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rt_hw_vector_init();
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rt_hw_spin_lock(&_cpus_lock);
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arm_gic_cpu_init(0, REALVIEW_GIC_CPU_BASE);
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arm_gic_set_cpu(0, IRQ_PBA8_TIMER0_1, 0x2);
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timer_init(0, 10000);
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rt_hw_interrupt_install(IRQ_PBA8_TIMER0_1, rt_hw_timer2_isr, RT_NULL, "tick");
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rt_hw_interrupt_umask(IRQ_PBA8_TIMER0_1);
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rt_system_scheduler_start();
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}
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void rt_hw_secondary_cpu_idle_exec(void)
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{
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asm volatile ("wfe":::"memory", "cc");
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}
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#endif
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