On Tue, Jul 28, 2015 at 12:24 PM, Sebastian Huber < sebastian.hu...@embedded-brains.de> wrote:
> Hello Rohini, > > please use the devel list. > > On 28/07/15 07:41, Rohini Kulkarni wrote: > >> Hi, >> >> I wish to understand where the interprocessor interrupts are used during >> the boot process. During final initialization of SMP I can see >> >> rtems_interrupt_handler_install( >> ARM_GIC_IRQ_SGI_0, >> "IPI", >> RTEMS_INTERRUPT_UNIQUE, >> bsp_inter_processor_interrupt, >> NULL >> ); >> >> Raspberry Pi 2 does not have the generic interrupt controller. Interrupt >> routing will have to be handled differently. So I wish to understand how/ >> where it is used. I suppose this might be the problem. >> > > Sorry, that the documentation is so scattered. I think we should move > everything into the CPU Architecture Supplement. It would be nice if you > can help to improve the documentation since you have a different view point. > > You must install the IPI during the system initialization. It is raised > via the _CPU_SMP_Send_interrupt() function, for an example see > arm-a9mpcore-smp.c. > I could locate the function in arm-a9mpcore-smp.c. but it would be helpful if I can know where this being called from, a deeper call hierarchy, so that I can ascertain this is a problem. I can see a Send_messgae function call this. But don't know where the send message is being called from. > > > >> Thanks. >> >> On Wed, Jul 22, 2015 at 7:08 PM, Rohini Kulkarni <krohini1...@gmail.com >> <mailto:krohini1...@gmail.com>> wrote: >> >> Ok. Qemu suggestion seems helpful for the cache configuration >> issue though. I am trying with Pi 1. >> >> Thanks. >> >> On 22 Jul 2015 18:59, "Sebastian Huber" >> <sebastian.hu...@embedded-brains.de >> <mailto:sebastian.hu...@embedded-brains.de>> wrote: >> >> Sorry, I cannot help you here since I never worked with a >> Raspberry Pi. >> >> -- Sebastian Huber, embedded brains GmbH >> >> Address : Dornierstr. 4, D-82178 Puchheim, Germany >> Phone : +49 89 189 47 41-16 >> Fax : +49 89 189 47 41-09 >> E-Mail : sebastian.hu...@embedded-brains.de >> <mailto:sebastian.hu...@embedded-brains.de> >> PGP : Public key available on request. >> >> Diese Nachricht ist keine geschäftliche Mitteilung im Sinne >> des EHUG. >> >> >> >> >> -- >> Rohini Kulkarni >> > > -- > Sebastian Huber, embedded brains GmbH > > Address : Dornierstr. 4, D-82178 Puchheim, Germany > Phone : +49 89 189 47 41-16 > Fax : +49 89 189 47 41-09 > E-Mail : sebastian.hu...@embedded-brains.de > PGP : Public key available on request. > > Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG. > > -- Rohini Kulkarni
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