The TCSR register has only 11 valid bits. This is now used by the linux kernel to auto-detect endianness, and causes Linux 3.15-rc1 and later to hang when run under qemu-microblaze. Mask valid bits before writing the register to solve the problem.
Signed-off-by: Guenter Roeck <[email protected]> --- hw/timer/xilinx_timer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/timer/xilinx_timer.c b/hw/timer/xilinx_timer.c index 6113b97..3ff1da9 100644 --- a/hw/timer/xilinx_timer.c +++ b/hw/timer/xilinx_timer.c @@ -169,7 +169,7 @@ timer_write(void *opaque, hwaddr addr, if (value & TCSR_TINT) value &= ~TCSR_TINT; - xt->regs[addr] = value; + xt->regs[addr] = value & 0x7ff; if (value & TCSR_ENT) timer_enable(xt); break; -- 1.7.9.7
