On the Encore M3 board that has the AU1500 MIPS processor on it, the BogoMIPS value should be 240,000 as per the cpu_syspll register However the loops_per_jiffy variable is defined as an unsigned long in the init/main.c making it impossible to achieve this value of 240K... Assuming that unsigned long means that a total of 4 bytes are allocated to this variable..Am I looking at the wrong value? The value that I get at boot time is lpj=8192. Thanks for your help, Ashlesha. On Mon, 2006-11-13 at 18:03 -0800, Ashlesha Shintre wrote: > On Mon, 2006-11-13 at 23:38 +0000, Ralf Baechle wrote: > > On Mon, Nov 13, 2006 at 10:46:47AM -0800, Ashlesha Shintre wrote: > > > > > > RPC: sendmsg returned error 128. > > > > <4>nfs: RPC call returned error 128 > > > > 128 = ENETUNREACH. > Thank you - > > > > > I m trying to boot the 2.6.14.6 kernel onto the Encore M3 board that has > > > the MIPS AU1500 processor on it. > > > > For more information [1] about 2.6.14 kernels see http://tinyurl.com/hjexx ;-) > > > > > The .config file contains the following line: CONFIG_PORTMAP=y > > > The server from which the NFS is mounted is also running the portmap > > > daemon.. > > > > > > Is there a way to check if the portmap server is functioning properly? > > > > > > > > > Also: > > > > > > - The BogoMIPS value is 7186 which seems too low for the AU1500 -- how > > > can I check that the timer interrupt is being handled correctly? The > > > AU1500 has 2 counters which are used to generate a clock > > > > > > - On the serial console I can only see messages upto this point: > > > > > > > > > > 16.35 BogoMIPS (lpj=8176) > > > > Sounds about right if your CPU clock hapens to be 8MHz so probably not. > > Chances the counter was missprogrammed. Or are you running uncached? > > Uncached will completly devastate performance. > > > > For the AU1500 processor, the CPU Clock is derived from the PLL whose > input is 12MHz.. Upon reading the value of the SYS_CPUPLL register in > the calibrate_delay function, I found out that the multiplying factor is > 40, thus, the CPU Clock frequency is 480MHz.. Thus the lpj should be > approximately 480000 -- right? > > Also I dont know what you mean by "running uncached"? > > > > > calibrate delay done > > > > anon vma init done > > > > Mount-cache hash table entries: 512 > > > > Checking for 'wait' instruction... unavailable. > > > > NET: Registered protocol family 16 > > > > size of au1xxx platform devices is 1 > > > > > > After this, the serial console 'hangs' -- I can see the RPC error from the log buffer, accessed from the JTAG port.. > > > --Please give any suggestions as to where I should start looking to narrow down and figure out the problem.. > > > > At about this point the actual console driver is registered and takes > > over from the early console driver - whatever that may be in your case. > > So seems the early console driver is fine but the actual console driver > > (that is serial driver) is falling over. > > > Thanks a lot, I will check the problem with the serial driver -- i m > using the 8250.c serial driver.. > > There is no early console init funciton: The board has a serial port on > a VIA 686B Southbridge on the PCI bus -- so to get the kernel messages > on the console, before initialising the serial driver I just write a TLB > entry giving the address of the VIA on the PCI bus -- > > So maybe deleting this TLB entry before serial driver initialisation > might work at this point...I will try that next - > > > Ralf > > > > [1] Okay, I'm just trying to convince people to upgrade :-) > I will convey your message to my boss :-) > > Thanks again, > Ashlesha. > > >
