|Subject:||[Qemu-discuss] Cortex A9 MMU enabling and processor hangs|
|Date:||Sat, 27 Jun 2015 14:19:12 +0200|
|User-agent:||Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0|
It is my first post here, and first question.
I am creating new hw board wirt cortex a-9 CPU.
I have code in my SPL:
asm volatile ("mrc p15, 0, %0, c1, c0, 0" : "=r" (a) : ); // Read SCTLR
a = a | (1 << 2) | (1 << 0);
asm volatile ("mcr p15, 0, %0, c1, c0, 0" : : "r" (a)); // Write SCTLR
After writing to SCTLR cpu seems to hangs. On real hardware this code works.
My question is how can I debug what is wrong in here?
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