Commit cd5c11b8 authored by Peter Maydell's avatar Peter Maydell
Browse files

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: default avatarPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: default avatarPeter Crosthwaite <peter.crosthwaite@xilinx.com>
parent 0b45451e

target-arm/helper.c

+4 −0
Original line number Diff line number Diff line
@@ -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

};