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Altera_Forum
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Honored ContributorProblems with installing Nios2 Linux
I am attempting to install the Nios2 Linux development tools on a Centos 6.3 based system.
I am somewhat confused by the instructions (on alteras wiki: Install_Nios_II_Linux). They indicate that the test-nios2 branch is the current branch of the kernel, but the nios2-linux-20100621.tar doesn't come automatically configured for this branch. The instructions also indicate that the current kernel uses the Devicetree approach to configuring the kernel for hardware, though, if I build with the test-nios2 branch, I have to use the vendor_hwselect mechanism Can someone tell me what the current branch is (test-nios2 or nios2mmu under linux-2.6 and test-nios2 or trunk under uClinux-dist) and what the current hardware customization mechanism is (vendor_hwselect, devicetree or sopc generated header)? Also, assuming that the current hardware customization is something other than vendor_hwselect, how do I configure things to get it? Thanks in advance. I'm trying to get ready to use this in a college class that starts at the end of September. D.W. Lynn For reference, Here is what I did, working from the Install_Nios_II_Linux instructions on the wiki, specifically using nios2-linux-20100621.tar. The tool-chain build step first complained: /home/lynnd/nios2-linux/toolchain-build/u-boot.mk:11: Board not defined! Using EP1S10 as default. and later fails with the following: ... home/lynnd/nios2-linux/uClibc' make[2]: `conf' is up to date. CC libpthread/linuxthreads.old/cancel.o In file included from ./include/sys/syscall.h:34, from libpthread/linuxthreads.old/restart.h:16, from libpthread/linuxthreads.old/cancel.c:23: ./include/bits/syscalls.h:10:23: asm/traps.h: No such file or directory make[1]: *** [libpthread/linuxthreads.old/cancel.o] Error 1 make[1]: Leaving directory `/home/lynnd/nios2-linux/uClibc' make: *** [/home/lynnd/nios2-linux/toolchain-build/../uClibc/lib/libc.a] Error 2 So, I switched to the prebuild binary toolchain, which worked. Then I attempted to make the kernel per the instructions using the make menuconfig process. There were lots of undefaulted options. On the final kernel make, I had to do "make CROSS-COMPILE=nios2-linux- since the default CROSS_COMPILE was nios2-linux-gnu- and that's not how the binary toolchain installed and I couldn't find the CROSS_COMPILE option in make menuconfig kernel customization. However, I still got the following error: /home/lynnd/nios2-linux/linux-2.6/arch/nios2/kernel/entry.S: Assembler messages: /home/lynnd/nios2-linux/linux-2.6/arch/nios2/kernel/entry.S:542: Error: expecting control register /home/lynnd/nios2-linux/linux-2.6/arch/nios2/kernel/entry.S:542: Error: unknown register r6 make[3]: *** [arch/nios2/kernel/entry.o] Error 1 Following some hints elsewhere in the forum, I removed the nios2-linux/ directory completely and untarred nios2-linux-20100621.tar again (to start fresh). Then, before doing the ./checkout step, I did "git checkout test-nios2 -f" in both the uClinux and the linux-2.6 directories. Now the kernel make process succeeds even though it uses the vendor_hwselect mechanism. Note that the documentation for Devicetree (linux-2.6/Documentation/devicetree) does not exist in the test-nios2 branch and make menuconfig in this branch does not give options for using the Device tree approach (that I could find).32 Replies
Altera_Forum--- Quote Start --- Hi, The files which are indicated by the tag ETC_FILES-y
are copied from your /nios2-linux/uClinux-dist/vendors/Altera/common directory ro /etc.# ETC_FILES-y = filesystems group issue mdev.conf mime.types modprobe.conf motd passwd profile rc TZ nsswitch.conf syslog.conf sc.cfg
So you must create the 'syslog.conf' file (which is used for rsyslogd) and 'sc.cfg' (I don't know what's this). And you have 4 errors which are caused by your 'rc' script file. 1) ifconfig: SIOCSIFADDR: No such device ifconfig: SIOCSIFADDR: No such device are caused by the lines 86 and 87.# for f in $(ETC_FILES-y) ; do $(ROMFSINST) ../common/$$f /etc/$$f ; done ;
2) cp: can't stat '/etc/sc.cfg': No such file or directory is caused by the line 93.# Set up eth1 IP address ifconfig eth0 192.168.11.4 up ifconfig eth1 192.168.1.4 up
3) insmod: can't insert '/usr/sbin/fpga.ko': No such file or directory Usage: mknod [-m MODE] NAME TYPE MAJOR MINOR are caused by the lines 96 and 101.# Move SoftClock config file to where it is accessed by application, location is hardcoded in application cp /etc/sc.cfg /var/log
4) sh: can't execute 'rsyslogd': No such file or directory is caused by the line 105.# Set up device driver, insert kernel module insmod /usr/sbin/fpga.ko# create device node using major number /proc/devices table CURRWD=`pwd` cd /dev MAJOR_NUM=$(awk 'BEGIN {FS=" "}; {if ($2 == "fpgasymm") print $1;}' /proc/devices) mknod -m=777 fpgasymm c $MAJOR_NUM 0 cd $CURRWD
If you don't require these, please delete or comment out those lines and recompile the kernel. Kazu --- Quote End --- Now I understsand better. I updated my design in Qsys and added a second timer. Picture https://i.stack.imgur.com/2jywn.png If I try and use that design I get this error msg# start rsyslogd daemon rsyslogd -n -m0 -f /etc/syslog.conf &
What does it mean?Linux version 3.5.0-rc4-01329-ga227997-dirty (developer@1604) (gcLinux version 3.5.0-rc4-01329-ga227997-dirty (developer@1604) (gcc version 4.1.2)# 810 Sat Apr 1 14:23:20 CEST 2017 bootconsole enabled early_console initialized at 0xe8001440 ERROR: Nios II MUL different for kernel and DTS Unable to handle kernel NULL pointer dereference at virtual address 00000000 ea = c0238094, ra = c0238078, cause = 15 Kernel panic - not syncing: Oops- Altera_Forum
Hi,
--- Quote Start --- Now I understsand better. I updated my design in Qsys and added a second timer. Picture https://i.stack.imgur.com/2jywn.png If I try and use that design I get this error msg
What does it mean? --- Quote End --- Maybe, you have the file '/arch/nios2/hernel/cpuinfo.c'. http://lxr.free-electrons.com/source/arch/nios2/kernel/cpuinfo.cLinux version 3.5.0-rc4-01329-ga227997-dirty (developer@1604) (gcLinux version 3.5.0-rc4-01329-ga227997-dirty (developer@1604) (gcc version 4.1.2)# 810 Sat Apr 1 14:23:20 CEST 2017 bootconsole enabled early_console initialized at 0xe8001440 ERROR: Nios II MUL different for kernel and DTS Unable to handle kernel NULL pointer dereference at virtual address 00000000 ea = c0238094, ra = c0238078, cause = 15 Kernel panic - not syncing: Oops
Did you setup 'CONFIG_NIOS2_HW_MUL_SUPPORT'? And also please check the contents of your dst file. Kazu32# define err_cpu(x) 33 pr_err("ERROR: Nios II " x " different for kernel and DTS\n") ....... 75 if (IS_ENABLED(CONFIG_NIOS2_HW_MUL_SUPPORT) && !cpuinfo.has_mul) 76 err_cpu("MUL");
