LK ARM64 arch_init处理

最新推荐文章于 2025-02-20 08:30:00 发布

星空探索

最新推荐文章于 2025-02-20 08:30:00 发布

阅读量591

点赞数

CC 4.0 BY-SA版权

分类专栏： LK 源码研究

本文链接：https://blog.youkuaiyun.com/sunlei0625/article/details/62421297

LK 源码研究专栏收录该内容

26 篇文章

订阅专栏

arch/arm64/arch.c

arch_init

void arch_early_init(void)
{
    arm64_cpu_early_init();
    platform_init_mmu_mappings();
}
void arch_init(void)
{
#if WITH_SMP
    arch_mp_init_percpu();
    LTRACEF("midr_el1 0x%llx\n", ARM64_READ_SYSREG(midr_el1));
    secondaries_to_init = SMP_MAX_CPUS - 1; /* TODO: get count from somewhere else, or add cpus as they boot */
    lk_init_secondary_cpus(secondaries_to_init);
    LTRACEF("releasing %d secondary cpus\n", secondaries_to_init);
    /* release the secondary cpus */
    spin_unlock(&arm_boot_cpu_lock);
    /* flush the release of the lock, since the secondary cpus are running without cache on */
    arch_clean_cache_range((addr_t)&arm_boot_cpu_lock, sizeof(arm_boot_cpu_lock));
#endif
}