smp.c 文件参考

浏览源代码.

结构体
struct	OsCpuInit

函数
VOID	reset_vector (VOID)
VOID	HalArchCpuOn (UINT32 cpuNum, ArchCpuStartFunc func, struct SmpOps *ops, VOID *arg)
VOID	HalSecondaryCpuStart (VOID)

变量
STATIC struct OsCpuInit	g_cpuInit [CORE_NUM - 1] = {0}

函数说明

HalArchCpuOn()

VOID HalArchCpuOn	(	UINT32	cpuNum,
		ArchCpuStartFunc	func,
		struct SmpOps *	ops,
		VOID *	arg
	)

在文件 smp.c 第 53 行定义.

{
    struct OsCpuInit *cpuInit = &g_cpuInit[cpuNum - 1];
    UINTPTR startEntry = (UINTPTR)&reset_vector - KERNEL_VMM_BASE + SYS_MEM_BASE;
    INT32 ret;
 
    cpuInit->cpuStart = func;
    cpuInit->arg = arg;
    cpuInit->initFlag = 0;
 
    DCacheFlushRange((UINTPTR)cpuInit, (UINTPTR)cpuInit + sizeof(struct OsCpuInit));
 
    LOS_ASSERT(ops != NULL);
 
 
    ret = ops->SmpCpuOn(cpuNum, startEntry);
    if (ret < 0) {
        PRINT_ERR("cpu start failed, cpu num: %u, ret: %d\n", cpuNum, ret);
        return;
    }
 
    while (!LOS_AtomicRead(&cpuInit->initFlag)) {
        WFE;
    }
}

函数调用图:

这是这个函数的调用关系图:

HalSecondaryCpuStart()

VOID HalSecondaryCpuStart

(

VOID

)

在文件 smp.c 第 79 行定义.

{
    UINT32 cpuid = ArchCurrCpuid();
    struct OsCpuInit *cpuInit = &g_cpuInit[cpuid - 1];
 
    OsCurrTaskSet(OsGetMainTask());
 
    LOS_AtomicSet(&cpuInit->initFlag, 1);
    SEV;
 
#ifdef LOSCFG_KERNEL_MMU
    OsArchMmuInitPerCPU();
#endif
 
    /* store each core's hwid */
    CPU_MAP_SET(cpuid, OsHwIDGet());
    HalIrqInitPercpu();
 
    cpuInit->cpuStart(cpuInit->arg);
 
    while (1) {
        WFI;
    }
}

函数调用图:

reset_vector()

VOID reset_vector

(

VOID

)

这是这个函数的调用关系图:

变量说明

g_cpuInit

STATIC struct OsCpuInit g_cpuInit[CORE_NUM - 1] = {0}

在文件 smp.c 第 51 行定义.