Hardware

Hardware 的协作图:

函数
VOID	FlushICache (VOID)
	Invalidate instruction cache. 更多...
VOID	DCacheFlushRange (UINTPTR start, UINTPTR end)
	Flush data cache. 更多...
VOID	DCacheInvRange (UINTPTR start, UINTPTR end)
	Invalidate data cache. 更多...
STATIC INLINE const CHAR *	LOS_CpuInfo (VOID)
	Get cpu core name. 更多...

详细描述

函数说明

DCacheFlushRange()

VOID DCacheFlushRange	(	UINTPTR	start,
		UINTPTR	end
	)

Flush data cache.

Description:

• This API is used to flush the data cache to the memory.

注意

• The input end address must be greater than the input start address.

参数

start	[IN] Type int Flush start address.
end	[IN] Type int Flush end address.

返回值

#None.

Dependency:

los_hw.h: the header file that contains the API declaration.

参见

None.

DCacheInvRange()

VOID DCacheInvRange	(	UINTPTR	start,
		UINTPTR	end
	)

Invalidate data cache.

Description:

• This API is used to Invalidate the data in cache.

注意

• The input end address must be greater than the input start address.

参数

start	[IN] Type int Invalidate start address.
end	[IN] Type int Invalidate end address .

返回值

#None.

Dependency:

los_hw.h: the header file that contains the API declaration.

参见

None.

FlushICache()

VOID FlushICache

(

VOID

)

Invalidate instruction cache.

Description:

• This API is used to invalidate the instruction cache.

注意

None.

参数

None.

返回值

#None.

Dependency:

los_hw.h: the header file that contains the API declaration.

参见

None.

在文件 los_hw.c 第 161 行定义.

{
    /*
     * Use ICIALLUIS instead of ICIALLU. ICIALLUIS operates on all processors in the Inner
     * shareable domain of the processor that performs the operation.
     */
    __asm__ __volatile__ ("mcr p15, 0, %0, c7, c1, 0" : : "r" (0) : "memory");
}

LOS_CpuInfo()

STATIC INLINE const CHAR * LOS_CpuInfo

(

VOID

)

Get cpu core name.

Description:

• This API is used to get cpu core name.

注意

• None.

参数

retval CHAR * cpu core name.

Dependency:

los_hw.h: the header file that contains the API declaration.

参见

None.

在文件 los_hw.h 第 168 行定义.

{
    INT32 i;
    UINT32 midr = OsMainIDGet();
    /* [15:4] is the primary part number */
    UINT32 partNo = (midr & 0xFFF0) >> 0x4;
 
    for (i = 0; g_cpuTable[i].partNo != 0; i++) {
        if (partNo == g_cpuTable[i].partNo) {
            return g_cpuTable[i].cpuName;
        }
    }
 
    return "unknown";
}

函数调用图:

这是这个函数的调用关系图: