Re: [ECOS] -- please someone respond -- S3c2410x (ARM920T) HAL port

["Michael Anburaj" <embeddedeng at hotmail dot com>]

OOPS! I was wrong. The "hal-porting-platform.html" document clearly says 
interrupts are not needed in redboot.

So, I am back to my initial problem. I have this simple issue, which anyone 
familiar with Redboot should know the answer.

1.	After a continue command is issued in the gdb console, $C0a#d4 is sent by 
the GDB host protocol <at least this is true in my case & most others>. The 
GDB stub inside Redboot interprets this & should eventual jump or switch to 
the application that?s being started. It will be great if you could point me 
to a document about this mechanism. Or at least if you could tell me which 
code (end code) is responsible for this; then I can back track the path & 
figure out the faulty code.

Cheers,
-Mike.


> From: "Michael Anburaj" <embeddedeng@hotmail.com>
> To: embeddedeng@hotmail.com, ecos-discuss@sources.redhat.com
> Subject: Re: [ECOS] -- please someone respond -- S3c2410x (ARM920T) HAL 
> port
> Date: Fri, 20 Jun 2003 04:28:07 +0000
>
> No one responded to my previous emails. One way it's good; I getting to 
> know ecos/Reboot underlying code much more elaborately.
>
> The problem I was seeing may be attributed to this (not very sure):
> The timer (RTC or tick) interrupt is not happening at all.
>
> Questions:
> 1.	Is this (ISR) needed for proper operation of Redboot (for example for 
> dispatching the gdb command like, ?continue?)?
> 2.	The reason why the interrupt were not happening was, the I bit in CPSR 
> never got cleared (IRQs enabled). The document 
> ?hal-exception-handling.html? in its very 1st point says about interrupts 
> being disabled before starting anything. But never mentioned when its 
> supposed to be turned ON. Someone familiar with the ARM ports; can you tell 
> me where exactly the I bit in CPSR is cleared; this will defiantly make my 
> job easier.
>
> Thanks & Cheers,
> -Mike.
>
> _________________________________________________________________
> Help STOP SPAM with the new MSN 8 and get 2 months FREE*  
> http://join.msn.com/?page=features/junkmail
>
>
> --
> Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
> and search the list archive: http://sources.redhat.com/ml/ecos-discuss

_________________________________________________________________
The new MSN 8: advanced junk mail protection and 2 months FREE*  
http://join.msn.com/?page=features/junkmail


--
Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
and search the list archive: http://sources.redhat.com/ml/ecos-discuss