Hi W dniu 13.10.2016 o 09:12, Huang, Tao pisze: > Hi, Pawe?: > On 2016?10?10? 17:11, Pawe? Jarosz wrote: >> W dniu 10.10.2016 o 09:18, Huang, Tao pisze: >>> Our IC guy need us tell them which master can not access such area, DMA >>> or EMMC Controller or GPU, etc? Could you tell me how to reproduce such >>> issue? >>> And we can confirm CPU core can access this memory through /dev/mem and >>> the test board is 1GB too. Personally, I don't think RK3066 has such >>> limit because when we verify this chip, we don't found such limit at all. >>> >>> Thanks, >>> Huang, Tao >> I'm getting this on Ubuntu 16.04 with mainline kernel. >> My board always freezes when i type: "memtester 800M" >> > We try run memtest 800M with Linux kernel 4.8, which killed by OOM. > But if we run: > # memtester -p 0x9F000000 16K 1 > memtester version 4.3.0 (32-bit) > Copyright (C) 2001-2012 Charles Cazabon. > Licensed under the GNU General Public License version 2 (only). > > pagesize is 4096 > pagesizemask is 0xfffff000 > want 0MB (16384 bytes) > Loop 1/1: > Stuck Address : ok > Random Value : ok > Compare XOR : ok > Compare SUB : ok > Compare MUL : ok > Compare DIV : ok > Compare OR : ok > Compare AND : ok > Sequential Increment: ok > Solid Bits : ok > Block Sequential : ok > Checkerboard : ok > Bit Spread : ok > Bit Flip : ok > Walking Ones : ok > Walking Zeroes : ok > 8-bit Writes : ok > 16-bit Writes : ok > > So these memory should be fine to CPU core. Maybe your system just > freeze because out of memory. > weird ... memtester -p 0x9F000000 16K 1 gave me the same result. Could you try one last command: memtester 400M Values > 200M causing freeze. If this won't do it, than maybe there is something wrong with my board. Thanks for your time.
