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@@ -248,7 +248,9 @@ ENTRY(cpu_v7_do_resume)
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mcr p15, 0, r7, c2, c0, 0 @ TTB 0
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mcr p15, 0, r8, c2, c0, 1 @ TTB 1
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mcr p15, 0, ip, c2, c0, 2 @ TTB control register
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- mcr p15, 0, r10, c1, c0, 1 @ Auxiliary control register
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+ mrc p15, 0, r4, c1, c0, 1 @ Read Auxiliary control register
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+ teq r4, r10 @ Is it already set?
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+ mcrne p15, 0, r10, c1, c0, 1 @ No, so write it
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mcr p15, 0, r11, c1, c0, 2 @ Co-processor access control
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ldr r4, =PRRR @ PRRR
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ldr r5, =NMRR @ NMRR
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