Re: Microblaze image hanging in qemu with 3.15-rc

[Michal Simek]

On 04/25/2014 03:51 PM, Guenter Roeck wrote:
> On 04/25/2014 06:29 AM, Guenter Roeck wrote:
>> On 04/25/2014 12:25 AM, Michal Simek wrote:
>> [ ... ]
>>
>>>
>>> It should be pretty easy to fix it in timer_write function like this.
>>>
>>> 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;
>>>
>>
>> Hi Michal,
>>
>> that fixes endianness detection, but the image is still hanging.
>>
>> Here is the log:
>>
>> NR_IRQS:33
>> /plb@0/interrupt-controller@81800000: num_irq=4, edge=0xa
>> ERROR: CPU CCF input clock not found
>> Reading TCSR0 returned 0x0, expected 0x1
>> Switch to big endian mode
>> /plb@0/timer@83c00000: irq=1
>> ERROR: timer CCF input clock not found
>> ERROR: Using CPU clock frequency
>> xilinx_timer_set_mode: shutdown
>> xilinx_timer_set_mode: periodic
>> sched_clock: 32 bits at 62MHz, resolution 16ns, wraps every 68719476720ns
>> Calibrating delay loop... QEMU: Terminated
>>
>> I added a couple of log messages to make sure that the mode is detected correctly.
>> Any idea what else might be wrong ?
>>
> 
> Never mind, I found it. Same problem with interrupt handler.
> Can you give me the valid bit mask for intc_baseaddr + MER ?

yep :-) MER mask is just 0x3.

Thanks,
Michal

-- 
Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel - Microblaze cpu - http://www.monstr.eu/fdt/
Maintainer of Linux kernel - Xilinx Zynq ARM architecture
Microblaze U-BOOT custodian and responsible for u-boot arm zynq platform

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