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[12/13] target/arm: PMU: Set PMCR.N to 4

Message ID 1492623684-25799-13-git-send-email-alindsay@codeaurora.org (mailing list archive)
State New, archived
Headers show

Commit Message

Aaron Lindsay April 19, 2017, 5:41 p.m. UTC 
This both advertises that we support four counters and adds them to the
implementation because the PMU_NUM_COUNTERS macro reads this value from
the PMCR.

Signed-off-by: Aaron Lindsay <alindsay@codeaurora.org>
---
 target/arm/helper.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/target/arm/helper.c b/target/arm/helper.c
index 5972984..a15b932 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -4936,7 +4936,8 @@  void register_cp_regs_for_features(ARMCPU *cpu)
             .access = PL0_RW, .accessfn = pmreg_access,
             .type = ARM_CP_IO,
             .fieldoffset = offsetof(CPUARMState, cp15.c9_pmcr),
-            .resetvalue = cpu->midr & 0xff000000,
+            /* 4 counters enabled */
+            .resetvalue = (cpu->midr & 0xff000000) | (0x4 << PMCRN_SHIFT),
             .writefn = pmcr_write, .raw_writefn = raw_write,
         };
         define_one_arm_cp_reg(cpu, &pmcr);