Hello Stefan,

I've cloned the genode repository freshly as you have suggested. I've followed the following steps for building the uImage:
When I haven't changed NR_OF_CPUS, it is hanging at "Starting kernel ..." itself. When I've changed NR_OF_CPUS to 1, I'm getting the following output:

MX6Q SABRESD U-Boot > bootm 0x30000000 
## Booting kernel from Legacy Image at 30000000 ...
   Image Name:   
   Image Type:   ARM Linux Kernel Image (gzip compressed)
   Data Size:    608176 Bytes = 593.9 kB
   Load Address: 10001000
   Entry Point:  10001000
   Verifying Checksum ... OK
   Uncompressing Kernel Image ... OK

Starting kernel ...

:virt_alloc: Allocator 0x200c40b8 dump:
 Block: [00001000,10001000) size=256M avail=256M max_avail=256M
 Block: [10585000,20001000) size=256496K avail=256496K max_avail=3144208K
 Block: [2017b000,2017c000) size=4K avail=0 max_avail=0
 Block: [2017c000,e0000000) size=3144208K avail=3144208K max_avail=3144208K
 Block: [f0004000,f0005000) size=4K avail=0 max_avail=3144208K
 Block: [f0007000,f0008000) size=4K avail=0 max_avail=0
 Block: [f0009000,f000a000) size=4K avail=0 max_avail=262036K
 Block: [f000a000,fffef000) size=262036K avail=262036K max_avail=262036K
 => mem_size=4019097600 (3832 MB) / mem_avail=4019081216 (3832 MB)

:phys_alloc: Allocator 0x200c304c dump:
 Block: [10585000,10586000) size=4K avail=0 max_avail=0
 Block: [10586000,10587000) size=4K avail=0 max_avail=1042644K
 Block: [10587000,10588000) size=4K avail=0 max_avail=0
 Block: [105ca000,105cb000) size=4K avail=0 max_avail=1042644K
 Block: [105cb000,50000000) size=1042644K avail=1042644K max_avail=1042644K
 => mem_size=1067683840 (1018 MB) / mem_avail=1067667456 (1018 MB)

:io_mem_alloc: Allocator 0x200c5130 dump:
 Block: [00000000,10585000) size=267796K avail=267796K max_avail=267796K
 Block: [10588000,105ca000) size=264K avail=264K max_avail=2952790015
 Block: [50000000,ffffffff) size=2952790015 avail=2952790015 max_avail=2952790015
 => mem_size=3227283455 (3077 MB) / mem_avail=3227283455 (3077 MB)

:io_port_alloc: Allocator 0x200c619c dump:
 => mem_size=0 (0 MB) / mem_avail=0 (0 MB)

:irq_alloc: Allocator 0x200c7208 dump:
 Block: [00000000,00000001) size=1 avail=1 max_avail=1
 Block: [00000002,0000001d) size=27 avail=27 max_avail=994
 Block: [0000001e,00000400) size=994 avail=994 max_avail=994
 => mem_size=1022 (0 MB) / mem_avail=1022 (0 MB)

:rom_fs: ROM modules:
 ROM: [1017e000,1017e158) config
 ROM: [10154000,1017a900) init
 ROM: [100d6000,10153b64) ld.lib.so
 ROM: [1017b000,1017d598) test-log


kernel initialized
Error: page fault in core thread (core): ip=0x20037b34 fault=0x68c88038

We are unable to detect what the problem is. Am I missing something in the build process itself?

Thanks,
Kranthi

[1] build/wand_quad/etc/build.conf
[2] /build/wand_quad

On Tue, May 2, 2017 at 1:57 PM, Stefan Kalkowski <stefan.kalkowski@...1...> wrote:
Hi Kranthi,

On 05/02/2017 09:43 AM, Kranthi Tej wrote:
> We've already made this change. We are currently using this setting
> itself. Besides, making this change, we've changed the NR_OF_CPUS to 1
> in [1]. If we let the default value of 4 be set, the device hangs at
> "Starting kernel ..." stage itself. We also tried setting the RAM0_SIZE
> to 0x20000000. Our board has a physical RAM of 1 GB.
>
> We have been facing the same pagefault for both the images (demo and
> log). The core isn't being started. Please provide any pointers to
> resolve this problem.

Please, do not test the release version 17.02, but the _current_ master
branch, e.g., by cloning the git repository:

  git@...116...:genodelabs/genode.git

just to ensure whether this works for you. I've used this version
successfully with all 4 cores enabled on the same board.

Regards Stefan

--
Stefan Kalkowski
Genode Labs

https://github.com/skalk · http://genode.org/

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