Define a dummy version of the AArch64 OSLAR_EL1 system register
which just ignores writes. Linux will always write to this (it
is the OS lock used for debugging), but we don't support debug.
Signed-off-by: Peter Maydell <peter.maydell@xxxxxxxxxx>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xxxxxxxxxx>
---
target-arm/helper.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/target-arm/helper.c b/target-arm/helper.c
index 0eb56ae..5c2be64 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -1738,6 +1738,10 @@ static const ARMCPRegInfo v8_cp_reginfo[] = {
{ .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 },
+ /* We define a dummy WI OSLAR_EL1, because Linux writes to it. */
+ { .name = "OSLAR_EL1", .state = ARM_CP_STATE_AA64,
+ .opc0 = 2, .opc1 = 0, .crn = 1, .crm = 0, .opc2 = 4,
+ .access = PL1_W, .type = ARM_CP_NOP },
REGINFO_SENTINEL
};
--
1.8.5
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