Devices don't work in SE mode. In the future they might, but for now
they don't for reasons like what you're seeing.
Gabe
On 09/30/11 16:31, Min Kyu Jeong wrote:
> Hi,
>
> I am trying to get a device working in SE mode. I hacked SConscripts
> here and there, and successed compiling a device that inherits DmaDevice.
>
> The intertance chain looks like
> MyDevice:DmaDevice:PioDevice:MemObject:SimObject
>
> The problem is, the PioDevice.sys (a pointer to the system) is not
> initialized properly (holds 0).
>
> It should be initilazed in the Ctor of PioDevice as:
>
> dev/io_device.cc
>
> PioDevice::PioDevice(const Params *p)
> : MemObject(p),
> #if FULL_SYSTEM
> platform(p->platform),
> #endif
> sys(p->system), pioPort(NULL)
> {}
>
> I gdbed and p->system holds 0 when the Ctor is executed. I guess
> p->system should have been initialized in the following
>
> dev/Device.py
>
> class PioDevice(MemObject):
> type = 'PioDevice'
> abstract = True
> pio = Port("Programmed I/O port")
> if buildEnv['FULL_SYSTEM']:
> platform = Param.Platform(Parent.any, "Platform this device is
> part of")
> system = Param.System(Parent.any, "System this device is part of")
>
>
> Now it is the where python-SWIG magic occurs, so I would appreciate
> any advice how should I proceed debugging from here.
>
> Thanks,
>
> Min
>
>
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