From cd5c11b84b2539049e0fdc2c4c5f3e86e88a8bff Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Wed, 26 Feb 2014 17:20:05 +0000 Subject: target-arm: Implement AArch64 OSLAR_EL1 sysreg as WI 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 Reviewed-by: Peter Crosthwaite --- target-arm/helper.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/target-arm/helper.c b/target-arm/helper.c index dde389c8af..61303b6ce9 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 }; -- cgit v1.2.3