We don't support letting the guest do debug, but Linux prods the
monitor debug system control register anyway, so implement a dummy
RAZ/WI version.
Signed-off-by: Peter Maydell <peter.maydell@xxxxxxxxxx>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xxxxxxxxxx>
---
target-arm/helper.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/target-arm/helper.c b/target-arm/helper.c
index 8184c38..9be331b 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -1656,6 +1656,12 @@ static const ARMCPRegInfo v8_cp_reginfo[] = {
.opc0 = 1, .opc2 = 0, .crn = 8, .crm = 7, .opc2 = 7,
.access = PL1_W, .type = ARM_CP_NO_MIGRATE,
.writefn = tlbi_aa64_vaa_write },
+ /* Dummy implementation of monitor debug system control register:
+ * we don't support debug.
+ */
+ { .name = "MDSCR_EL1", .state = ARM_CP_STATE_AA64,
+ .opc0 = 2, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 2,
+ .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
REGINFO_SENTINEL
};
--
1.8.5
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