armv7: Allow accessing ACTLR (Auxiliary Control Register)
The ACTLR provides implementation defined configuration and control options for the processor. Change-Id: I74df1ed7887eb3f16a1b8297db998ec2f8b18311 Signed-off-by: Hung-Te Lin <hungte@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/65107 Commit-Queue: Gabe Black <gabeblack@chromium.org> Reviewed-on: http://review.coreboot.org/4447 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
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@ -66,6 +66,20 @@ inline static uint32_t read_mpidr(void)
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return value;
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}
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/* read Auxiliary Control Register (ACTLR) */
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inline static uint32_t read_actlr(void)
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{
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uint32_t val = 0;
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asm volatile ("mrc p15, 0, %0, c1, c0, 1" : "=r"(val));
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return val;
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}
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/* write Auxiliary Control Register (ACTLR) */
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inline static void write_actlr(uint32_t val)
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{
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asm volatile ("mcr p15, 0, %0, c1, c0, 1" : : "r" (val));
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}
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/* wait for interrupt. */
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inline static void wfi(void)
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{
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