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
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 have written a small
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
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
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
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 AM
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
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, January 04, 2012 11:50
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
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
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, Farrukh
Cc: linuxppc
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
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 core in
SAMP configuration on P1022RDK board. Given is my
-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,
I have a basic
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
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
default
Regards,
Farrukh Arshad
-Original Message-
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
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 {
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