<div>hello,all</div> <div>The following program is from MARVELL U-Boot</div> <div> </div> <div> </div> <div>if(mvCtrlModelGet() == MV_5281_DEV_ID) /* Orion 2 */<BR> {</div> <div> __asm__ __volatile__("mrc p15, 0, %0, c14, c0, 0" : "=r" (temp):: "memory");<BR> if (temp & 0x10000000)<BR> {<BR> printf("CPU: Write allocate enabled\n");<BR> }<BR> else<BR> {<BR> printf("CPU: Write allocate Disabled\n");<BR> }<BR> }</div> <div> </div> <div> </div> <div>I don't understand what's the following sentense mean,please detailed explain it,thanks</div> <div> </div> <div>__asm__ __volatile__("mrc p15, 0, %0, c14, c0, 0" : "=r" (temp):: "memory");</div><p> 
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