Greetings All,
I have general question regarding kernel debugging on PowerPC platform. Except
printk what are other ways for kernel / kernel modules debugging on PowerPC
architecture (i.e P1022DS/RDK boards). I am specifically referring to the
option of connecting hardware probe and debug the k
PM
To: Arshad, Farrukh
Cc: Scott Wood; linuxppc-dev@lists.ozlabs.org
Subject: Re: Problem in getting shared memory access on P1022RDK
Arshad, Farrukh wrote:
> Adding more it,
>
> I have removed the shared memory kernel driver dependency just to narrow down
> the problem area and I ha
Greetings All,
I am trying to connect LCD with P1022DS via DVI port, I have also configured
CONFIG_FB_FSL_DIU and using following boot parameters, but I can't see anything
on the LCD not even the Linux Logo (I have configured it as well in the kernel)
instead I only see on the LCD "No Signal fr
Greetings All,
I have a quick question regarding TLB dump for P1022. Please excuse me for
being naïve. I want to dump the TLB entry for a page number. I know my page
frame number. If I read TLB0 dump using tlbre instruction, the instruction
output TLB0 entries in MAS0 - MAS3 registers. After th
Adding more it,
I have removed the shared memory kernel driver dependency just to narrow down
the problem area and I have written a small piece of code in user space. A
writer & a reader application which access the shared memory and I got the same
behavior as with the shared memory kernel dri
>> Does each dtb have the correct CPU number, both from the command line boot
>> cpu flag and in the CPU node?
Yes both CPUs have the correct CPU numbers and also both DTBs are build with
their respective -b flag.
>> Do both device trees have pic-no-reset in the mpic node?
Yes, both have pic-n
Change kernel configuration as per following to fix this warning.
Disable Kernel Options -> Support for enabling/disabling CPUs
Disable Kernel Options -> Distribute interrupts on all CPUs by default
Regards,
Farrukh Arshad
From: Arshad, Farrukh
Sent: Friday, December 23, 2011 11:18
>> Was the kernel option, CONFIG_SMP, enabled for both two kernels?
Yes CONFIG_SMP is enabled for both kernels.
>> Maybe you should make sure if kernel have a appropriate memory attribute by
>> dumping TLB entry.
Thanks for the pointer. I will try this one.
Regards,
Farrukh Arshad
_
both kernels
memory initialization which is causing all these issues. Kernel sources /
configuration of both cores are 100% same except (CONFIG_PHYSICAL_START) param
and kernel version is 2.6.32.13.
Any thoughts.
Regards,
Farrukh Arshad
-Original Message-
From: Arshad, Farrukh
Sent: Wednesday
000 0x0C00, -->
CONFIG_PHYSICAL_START = bootm_low = Base Address
Shared Mem 0x1C00, 0x0400,
Regards,
Farrukh Arshad
-Original Message-
From: Scott Wood [mailto:scottw...@freescale.com]
Sent: Tuesday, January 03, 2012 10:10 PM
To: Arshad, Farr
Adding more to it,
When I write from Core 1 on the shared memory region it is visible at Core 0
and it can read what I have written from Core 1 but when I write from Core 0 on
this shared memory it is not visible on Core 1.
Regards,
Farrukh Arshad
From: Arshad, Farrukh
Sent: Tuesday, January
Greetings All,
Please excuse me for a 'not very precise' question but I just need some clue or
point to look for the trouble.
I am running linux in AMP configuration on P1022RDK dual core. My memory
partitioning is given below
Core Base Address (CONFIG_PHYSICAL_START / bootm_low) Size (bootm_si
c...@windriver.com]
Sent: Wednesday, December 28, 2011 11:19 AM
To: Arshad, Farrukh
Cc: linuxppc-dev@lists.ozlabs.org
Subject: Re: Kernel not booting when supplying boot parameter mem
Arshad, Farrukh wrote:
> Hi Tiejun,
>
> Thanks for your response. Yes, I am running two kernels one on each co
-Original Message-
From: tiejun.chen [mailto:tiejun.c...@windriver.com]
Sent: Tuesday, December 27, 2011 4:08 PM
To: Arshad, Farrukh
Cc: linuxppc-dev@lists.ozlabs.org
Subject: Re: Kernel not booting when supplying boot parameter mem
Arshad, Farrukh wrote:
> Greetings All,
>
>
Greetings All,
I have a basic question. I have 512 MB memory. I want my kernel to use only
last 128 MB of memory starting from address 0x1000. I have configured the
kernel CONFIG_PHYSICAL_START=0x1000 and in kernel boot parameter I have set
mem=128M. In this scenario my kernel is not bo
Greetings All
I am running dual linux on P1022RDK in AMP configuration. My memory
partitioning is as below
-
Core | Base Address |Size |
--|---|--
Greetings All,
I am doing a dual boot on P1022RDK with following configuration
Core 0: Linux RT: Running fine, ethernet@B is working fine.
Core 1: Linux: Crashing at following, ethernet@B1000 is not creating a link
I have allocated ethernet1 to core 1 in its DTS file but when I boot my kerne
-
From: Arshad, Farrukh
Sent: Thursday, December 08, 2011 11:35 AM
To: 'Scott Wood'
Cc: Linuxppc-dev@lists.ozlabs.org
Subject: RE: Multi-OS on P1022RDK Failing
Thanks Scott.
Fixing cpu 1 release address solved my problem. Also thanks for the
CONFIG_LOWMEM_SIZE suggestions.
Regards,
Farr
Thanks Scott.
Fixing cpu 1 release address solved my problem. Also thanks for the
CONFIG_LOWMEM_SIZE suggestions.
Regards,
Farrukh Arshad
-Original Message-
From: Scott Wood [mailto:scottw...@freescale.com]
Sent: Thursday, December 08, 2011 2:24 AM
To: Arshad, Farrukh
Cc: Linuxppc
Greetings All,
I am working on P1022RDK (P1022 Processor). I am trying to bring up LTIB Linux
only on Core1 of the processor. I have configured the "cpus" node in the device
tree file as following way
Cpus {
#address-cells = <1>;
#size-cells = <0>;
PowerPC,P1022@1 {
De
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