[U-Boot-Users] Re: where is the interrupt vectors?

[U-Boot-Users] Re: where is the interrupt vectors?

[terry]

> Subject: Re: [U-Boot-Users] where is the interrupt vectors?
> To: u-boot-users at lists.sourceforge.net
> From: "KokHow Teh" <KokHow.Teh@marconi.com>
> Date: Thu, 24 Nov 2005 11:32:24 +0800
> 
> 
> 
> 
> >I want to support some perpherals which need use the I/O pins of INT.
> >And it need to be allocated the vectors, depending on the INT ports.
> >How does u-boot support this, and where I can find it?
> 
> Depending on your CPU architecture, interrupt/exception vectors are setup
> in start.S
> 


Thank you for your reply ,but I think you misunderstood my question.
What I said is the extern interrupts, and now I have know that U-BOOT is
no support the interrupts, so it doesn't need the vectors.

regards

Terry

[U-Boot-Users] Re: where is the interrupt vectors?

[Wolfgang Denk]

In message <1132812293.2550.20.camel@PC6> you wrote:
> 
> Thank you for your reply ,but I think you misunderstood my question.

No, it is you who does not understand.

> What I said is the extern interrupts, and now I have know that U-BOOT is
> no support the interrupts, so it doesn't need the vectors.

You are wrong. You can use interrupts in U-Boot. There is  even  code
in the examples directory which does so.

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
It seems intuitively obvious to me, which  means  that  it  might  be
wrong.                                                 -- Chris Torek

[U-Boot-Users] Re: where is the interrupt vectors?

[KokHow Teh]

>In message <1132812293.2550.20.camel@PC6> you wrote:
>>
>> Thank you for your reply ,but I think you misunderstood my question.

>No, it is you who does not understand.

>> What I said is the extern interrupts, and now I have know that U-BOOT is
>> no support the interrupts, so it doesn't need the vectors.

>You are wrong. You can use interrupts in U-Boot. There is  even  code
>in the examples directory which does so.

and here are the external interrupts:

./74xx_7xx/interrupts.c:62:external_interrupt(struct pt_regs *regs)
./74xx_7xx/interrupts.c:64:     puts("external_interrupt (oops!)\n");
./74xx_7xx/start.S:122: STD_EXCEPTION(0x500, ExtInterrupt, external_interrupt)
./mpc5xx/interrupts.c:75:void external_interrupt (struct pt_regs *regs)
./mpc5xx/start.S:208:   STD_EXCEPTION(0x500, ExtInterrupt, external_interrupt)
./mpc5xxx/interrupts.c:48:external_interrupt(struct pt_regs *regs)
./mpc5xxx/interrupts.c:50:      puts("external_interrupt (oops!)\n");
./mpc5xxx/start.S:206:  STD_EXCEPTION(0x500, ExtInterrupt, external_interrupt)
./mpc8220/interrupts.c:47:void external_interrupt (struct pt_regs *regs)
./mpc8220/interrupts.c:49:      puts ("external_interrupt (oops!)\n");
./mpc8220/start.S:167:  STD_EXCEPTION(0x500, ExtInterrupt, external_interrupt)
./mpc824x/interrupts.c:56:void external_interrupt (struct pt_regs *regs)
./mpc824x/start.S:218:  STD_EXCEPTION(EXC_OFF_EXTERNAL, ExtInterrupt, external_interrupt)
./mpc8260/interrupts.c:177:void external_interrupt (struct pt_regs *regs)
./mpc8260/start.S:277:  STD_EXCEPTION(0x500, ExtInterrupt, external_interrupt)
./mpc83xx/interrupts.c:54:void external_interrupt (struct pt_regs *regs)
./mpc83xx/start.S:219:  STD_EXCEPTION(0x500, ExtInterrupt, external_interrupt)
./mpc8xx/interrupts.c:68:void external_interrupt (struct pt_regs *regs)
./mpc8xx/start.S:222:   STD_EXCEPTION(0x500, ExtInterrupt, external_interrupt)
./nios/interrupts.c:103:void external_interrupt (struct pt_regs *regs)
./nios/traps.S:318: * The default handler passes control to external_interrupt(). So trap
./nios/traps.S:323: * external_interrupt(). This lets the underflow and overflow handlers
./nios/traps.S:398:     pfx     %hi(external_interrupt at h)
./nios/traps.S:399:     movi    %o1, %lo(external_interrupt at h)
./nios/traps.S:400:     pfx     %xhi(external_interrupt at h)
./nios/traps.S:401:     movhi   %o1, %xlo(external_interrupt at h)
./nios2/exceptions.S:83:        movhi   r3, %hi(external_interrupt)
./nios2/exceptions.S:84:        ori     r3, r3, %lo(external_interrupt)
./nios2/interrupts.c:121:void external_interrupt (struct pt_regs *regs)
./ppc4xx/interrupts.c:199:void external_interrupt(struct pt_regs *regs)
./ppc4xx/interrupts.c:222:} /* external_interrupt CONFIG_440GX */
./ppc4xx/interrupts.c:226:void external_interrupt(struct pt_regs *regs)
./ppc4xx/start.S:783:   STD_EXCEPTION(0x500, ExtInterrupt, external_interrupt)

[U-Boot-Users] Re: where is the interrupt vectors?

[terry]

On Thu, 2005-11-24 at 08:47 +0100, Wolfgang Denk wrote:
> In message <1132812293.2550.20.camel@PC6> you wrote:
> > 
> > Thank you for your reply ,but I think you misunderstood my question.
> 
> No, it is you who does not understand.
> 
> > What I said is the extern interrupts, and now I have know that U-BOOT is
> > no support the interrupts, so it doesn't need the vectors.
> 
> You are wrong. You can use interrupts in U-Boot. There is  even  code
> in the examples directory which does so.
> 
> Best regards,
> 
> Wolfgang Denk
> 

It seems that I make a big mistake. 
I want to support an perpheral which connect with CPU through the INT
I/O port. And I need allocate vector to it, then CPU know where to
execute the interrupt subroutine,is it right? 
And there is many other interrupts happened like this from other device.
I can't find where to allocate vectors for them. May be this job can be
describe "register interrupt in U-Boot".

Thank you 

Terry

 

[U-Boot-Users] Re: where is the interrupt vectors?

[terry]

yes, I make a mistake.
The CPU I used is ARM926ejs.I never look through other files.
May be there is other method I didn't know.

Thank you 

Terry

On Thu, 2005-11-24 at 15:53 +0800, KokHow Teh wrote:
> 
> >In message <1132812293.2550.20.camel@PC6> you wrote:
> >>
> >> Thank you for your reply ,but I think you misunderstood my question.
> 
> >No, it is you who does not understand.
> 
> >> What I said is the extern interrupts, and now I have know that U-BOOT is
> >> no support the interrupts, so it doesn't need the vectors.
> 
> >You are wrong. You can use interrupts in U-Boot. There is  even  code
> >in the examples directory which does so.
> 
> and here are the external interrupts:
> 
> ./74xx_7xx/interrupts.c:62:external_interrupt(struct pt_regs *regs)
> ./74xx_7xx/interrupts.c:64:     puts("external_interrupt (oops!)\n");
> ./74xx_7xx/start.S:122: STD_EXCEPTION(0x500, ExtInterrupt, external_interrupt)
> ./mpc5xx/interrupts.c:75:void external_interrupt (struct pt_regs *regs)
> ./mpc5xx/start.S:208:   STD_EXCEPTION(0x500, ExtInterrupt, external_interrupt)
> ./mpc5xxx/interrupts.c:48:external_interrupt(struct pt_regs *regs)
> ./mpc5xxx/interrupts.c:50:      puts("external_interrupt (oops!)\n");
> ./mpc5xxx/start.S:206:  STD_EXCEPTION(0x500, ExtInterrupt, external_interrupt)
> ./mpc8220/interrupts.c:47:void external_interrupt (struct pt_regs *regs)
> ./mpc8220/interrupts.c:49:      puts ("external_interrupt (oops!)\n");
> ./mpc8220/start.S:167:  STD_EXCEPTION(0x500, ExtInterrupt, external_interrupt)
> ./mpc824x/interrupts.c:56:void external_interrupt (struct pt_regs *regs)
> ./mpc824x/start.S:218:  STD_EXCEPTION(EXC_OFF_EXTERNAL, ExtInterrupt, external_interrupt)
> ./mpc8260/interrupts.c:177:void external_interrupt (struct pt_regs *regs)
> ./mpc8260/start.S:277:  STD_EXCEPTION(0x500, ExtInterrupt, external_interrupt)
> ./mpc83xx/interrupts.c:54:void external_interrupt (struct pt_regs *regs)
> ./mpc83xx/start.S:219:  STD_EXCEPTION(0x500, ExtInterrupt, external_interrupt)
> ./mpc8xx/interrupts.c:68:void external_interrupt (struct pt_regs *regs)
> ./mpc8xx/start.S:222:   STD_EXCEPTION(0x500, ExtInterrupt, external_interrupt)
> ./nios/interrupts.c:103:void external_interrupt (struct pt_regs *regs)
> ./nios/traps.S:318: * The default handler passes control to external_interrupt(). So trap
> ./nios/traps.S:323: * external_interrupt(). This lets the underflow and overflow handlers
> ./nios/traps.S:398:     pfx     %hi(external_interrupt at h)
> ./nios/traps.S:399:     movi    %o1, %lo(external_interrupt at h)
> ./nios/traps.S:400:     pfx     %xhi(external_interrupt at h)
> ./nios/traps.S:401:     movhi   %o1, %xlo(external_interrupt at h)
> ./nios2/exceptions.S:83:        movhi   r3, %hi(external_interrupt)
> ./nios2/exceptions.S:84:        ori     r3, r3, %lo(external_interrupt)
> ./nios2/interrupts.c:121:void external_interrupt (struct pt_regs *regs)
> ./ppc4xx/interrupts.c:199:void external_interrupt(struct pt_regs *regs)
> ./ppc4xx/interrupts.c:222:} /* external_interrupt CONFIG_440GX */
> ./ppc4xx/interrupts.c:226:void external_interrupt(struct pt_regs *regs)
> ./ppc4xx/start.S:783:   STD_EXCEPTION(0x500, ExtInterrupt, external_interrupt)
> 
> 
> 
> 
> 
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