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TCM 不能使用



我使用DM355,系统是linux-2.6.10. 在实现deep sleep时发现只要关闭ddr,系统就会死掉。deep sleep的功能是从3.1.2版本上抄过来的,睡眠的函数会拷贝到DTCM里去。在启动的时候,我使用如下语句使能了DTCM.

tmp = 0x10019;

asm volatile ("mcr p15, 0, %0, c9, c1, 0" : : "r" (tmp));

现在只要disable PSC 的 module 13, 系统就挂住了。

请问该如何处理?