rt-thread-official/bsp/qemu-vexpress-a9/drivers/board.c

/*
 * Copyright (c) 2006-2021, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2012-11-20     Bernard    the first version
 * 2018-11-22     Jesven     add rt_hw_spin_lock
 *                           add rt_hw_spin_unlock
 *                           add smp ipi init
 */

#include <rthw.h>
#include <rtthread.h>

#include "board.h"
#include "drv_timer.h"
#include "mm_aspace.h"

#include <mmu.h>
#ifdef RT_USING_SMART
#include <page.h>
#include <lwp_arch.h>
#endif

#ifdef RT_USING_SMART
struct mem_desc platform_mem_desc[] = {
    {KERNEL_VADDR_START, KERNEL_VADDR_START + 0x10000000, (rt_size_t)ARCH_MAP_FAILED, NORMAL_MEM}
};
#else
struct mem_desc platform_mem_desc[] = {
    {0x10000000, 0x50000000, 0x10000000, DEVICE_MEM},
    {0x60000000, 0x70000000, 0x60000000, NORMAL_MEM}
};
#endif

const rt_uint32_t platform_mem_desc_size = sizeof(platform_mem_desc)/sizeof(platform_mem_desc[0]);

#define SYS_CTRL                        __REG32(REALVIEW_SCTL_BASE)

extern void rt_hw_ipi_handler_install(int ipi_vector, rt_isr_handler_t ipi_isr_handler);

void idle_wfi(void)
{
    asm volatile ("wfi");
}

/**
 * This function will initialize board
 */

extern size_t MMUTable[];

#ifdef RT_USING_SMART
rt_region_t init_page_region = {
    (uint32_t)PAGE_START,
    (uint32_t)PAGE_END,
};
#endif

void rt_hw_board_init(void)
{
#ifdef RT_USING_SMART
    rt_uint32_t mmutable_p = 0;
    rt_hw_mmu_map_init(&rt_kernel_space, (void*)0xf0000000, 0x10000000, MMUTable, PV_OFFSET);
    rt_hw_init_mmu_table(platform_mem_desc,platform_mem_desc_size);
    mmutable_p = (rt_uint32_t)MMUTable + (rt_uint32_t)PV_OFFSET ;
    rt_hw_mmu_switch((void*)mmutable_p);
    rt_page_init(init_page_region);
    rt_hw_mmu_ioremap_init(&rt_kernel_space, (void*)0xf0000000, 0x10000000);
    arch_kuser_init(&rt_kernel_space, (void*)0xffff0000);
#else
    rt_hw_mmu_map_init(&rt_kernel_space, (void*)0x80000000, 0x10000000, MMUTable, 0);
    rt_hw_init_mmu_table(platform_mem_desc,platform_mem_desc_size);
    rt_hw_mmu_init();
    rt_hw_mmu_ioremap_init(&rt_kernel_space, (void*)0x80000000, 0x10000000);
#endif

    /* initialize system heap */
    rt_system_heap_init(HEAP_BEGIN, HEAP_END);

    /* initialize hardware interrupt */
    rt_hw_interrupt_init();

    rt_components_board_init();
    rt_console_set_device(RT_CONSOLE_DEVICE_NAME);

    rt_thread_idle_sethook(idle_wfi);

#ifdef RT_USING_SMP
    /* install IPI handle */
    rt_hw_ipi_handler_install(RT_SCHEDULE_IPI, rt_scheduler_ipi_handler);
#endif
}