Re: interrupt mode in eboot?
- From: "mobilevil" <kccheng@xxxxxxxxxxxxxxxxxxxxxx>
- Date: Fri, 27 May 2005 23:54:55 +0800
oh? i thought it will take an interrupt to change mode?
anyway i will test it sooner or later... thx
"voidcoder" <voidcoder@xxxxxxxxx> wrote in message
news:OP$Cv$pYFHA.580@xxxxxxxxxxxxxxxxxxxxxxx
> Thats not a problem at all. Just add the following lines to Your
> startup code:
>
> ldr r0, =(CPSR_Mode_SVC :OR: CPSR_I_Bit :OR: CPSR_F_Bit)
> msr cpsr_c, r0
>
> Now You are supervisor :)
>
>
> "mobilevil" <mobilevil@xxxxxxxxxx> wrote in message
> news:etlilzpYFHA.3616@xxxxxxxxxxxxxxxxxxxxxxx
>>? seems no... mainstone2's eboot is not in supervisor mode I suppose? I
>>couldn't read cpu clock speed settings in eboot's C code.
>> anyway I have fixed the problem and no longer want interrupt in eboot.
>> hehe
>>
>> "voidcoder" <voidcoder@xxxxxxxxx> wrote in message
>> news:edz8ZwpYFHA.3188@xxxxxxxxxxxxxxxxxxxxxxx
>>> You have to implement exception handlers in
>>> EBOOT code and then map them to address
>>> 0x00000000. Hey, You have full control over
>>> MMU in EBOOT since You are running in
>>> supervisor mode, you can do anything You
>>> want at this point.
>>>
>>>
>>> "mobilevil" <mobilevil@xxxxxxxxxx> wrote in message
>>> news:%23sSXajpYFHA.3584@xxxxxxxxxxxxxxxxxxxxxxx
>>>> well I am working with usb rndis image download, and i found that
>>>> EdbgOutputDebugString take more time then the that usbc allows... so
>>>> packet is lost.
>>>> i fixed that, by handling usbc interrupt inside of
>>>> EdbgOutputDebugString(OEMWriteDebugByte that is). that's quite dirty
>>>> and i don't feel like it too much.
>>>>
>>>> "Yannick Chamming's [eMVP]" <ychammings_nospam@xxxxxxxxxx> wrote in
>>>> message news:uRWCdmoYFHA.3488@xxxxxxxxxxxxxxxxxxxxxxx
>>>>> Why would you use interrupt in eboot ? When eboot runs, nobody else is
>>>>> running, so you have all the CPU time you want.
>>>>>
>>>>> --
>>>>> ----------------------------------------------------------------
>>>>> Yannick Chamming's (eMVP)
>>>>> ADENEO (ADESET)
>>>>> Windows Embedded Manager
>>>>> ychammings AT adeset DOT com>
>>>>> http://www.adeset.com
>>>>> Tél : +33 (0)4.72.18.57.77
>>>>> Fax : +33 (0)4.72.18.57.78
>>>>> ----------------------------------------------------------------
>>>>>
>>>>> "mobilevil" <mobilevil@xxxxxxxxxx> a écrit dans le message de news:
>>>>> %23C2pq2nYFHA.2312@xxxxxxxxxxxxxxxxxxxxxxx
>>>>>> did anybody enabled interrupt in eboot? I am using xscale 27x and pb
>>>>>> 5.0
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>
>
.
- References:
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- From: mobilevil
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- Re: interrupt mode in eboot?
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