Commit fa96d614 authored by Peter Crosthwaite's avatar Peter Crosthwaite Committed by Edgar E. Iglesias
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intc/xilinx_intc: Inhibit write to ISR when HIE 



When the Hardware Interrupt Enable (HIE) bit is set, software cannot
change ISR. Add write guard accordingly.

Signed-off-by: default avatarPeter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: default avatarEdgar E. Iglesias <edgar.iglesias@gmail.com>
parent 45fdd3bf

hw/intc/xilinx_intc.c

+5 −0
Original line number Diff line number Diff line
@@ -116,6 +116,11 @@ pic_write(void *opaque, hwaddr addr, 
        case R_CIE:

            p->regs[R_IER] &= ~value; /* Atomic clear ie.  */

            break;

        case R_ISR:

            if ((p->regs[R_MER] & 2)) {

                break;

            }

            /* fallthrough */

        default:

            if (addr < ARRAY_SIZE(p->regs))

                p->regs[addr] = value;