On 11/03/2012 09:20 PM, Robert Berger wrote: > Hi, > > I try to get Xenomai run on a Beagle-XM rev c. > > That's what I use: > > *) xenomai-head commit 9534fff1f0247c4c1a9bd104b0ef65df340ead4f > *) ipipe-core-3.2.21-arm-1.patch > *) ELDK 5.2.1 generic-armv7a > *) linux-stable 3.2.21 > *) rootfs on 2nd partition of SD card (for now) > *) kernel loaded over tftp
What version of the Linux kernel? Is it a vanilla 3.2.21? > > That's what I observed so far: > > 1) default config > *) default kernel boots > *) ipipe patched kernel hangs: > > Filename 'beagle-xm/uImage'. > Load address: 0x80200000 > Loading: ################################################################# > done > Bytes transferred = 3607600 (370c30 hex) > ## Booting kernel from Legacy Image at 80200000 ... > Image Name: Linux-3.2.21-xenomai-student-dir > Image Type: ARM Linux Kernel Image (uncompressed) > Data Size: 3607536 Bytes = 3.4 MiB > Load Address: 80008000 > Entry Point: 80008000 > Verifying Checksum ... OK > Loading Kernel Image ... OK > OK > > Starting kernel ... > > Uncompressing Linux... done, booting the kernel. > > --> hangs here <-- As repeated many times on this list and probably on the linux-arm-kernel mailing list too, in that case, use earlyprintk. > > 1) custom config (able to boot rootfs over nfs) > *) custom kernel boots with network support > *) ipipe patched kernel tells me this: > > ... > [ 0.342254] Division by zero in kernel. > [ 0.342315] [<c00134b8>] (unwind_backtrace+0x0/0xe0) from > [<c03837d4>] (Ldiv0+0x8/0x10) > [ 0.342376] [<c03837d4>] (Ldiv0+0x8/0x10) from [<c04df888>] > (rthal_arch_init+0x94/0xd8) > [ 0.342407] [<c04df888>] (rthal_arch_init+0x94/0xd8) from > [<c00c4564>] (rthal_init+0x7c/0x25c) > [ 0.342437] [<c00c4564>] (rthal_init+0x7c/0x25c) from [<c084f58c>] > (__xeno_sys_init+0x20/0x30c) > [ 0.342468] [<c084f58c>] (__xeno_sys_init+0x20/0x30c) from > [<c000883c>] (do_one_initcall+0x90/0x160) > [ 0.342498] [<c000883c>] (do_one_initcall+0x90/0x160) from > [<c08388a0>] (kernel_init+0xd8/0x180) > [ 0.342529] [<c08388a0>] (kernel_init+0xd8/0x180) from [<c000dfec>] > (kernel_thread_exit+0x0/0x8) > [ 0.342559] Division by zero in kernel. > [ 0.342590] [<c00134b8>] (unwind_backtrace+0x0/0xe0) from > [<c03837d4>] (Ldiv0+0x8/0x10) > [ 0.342620] [<c03837d4>] (Ldiv0+0x8/0x10) from [<c03837a4>] > (__aeabi_uidivmod+0x8/0x18) > [ 0.342620] [<c03837a4>] (__aeabi_uidivmod+0x8/0x18) from > [<c04df898>] (rthal_arch_init+0xa4/0xd8) > [ 0.342651] [<c04df898>] (rthal_arch_init+0xa4/0xd8) from > [<c00c4564>] (rthal_init+0x7c/0x25c) > [ 0.342681] [<c00c4564>] (rthal_init+0x7c/0x25c) from [<c084f58c>] > (__xeno_sys_init+0x20/0x30c) > [ 0.342712] [<c084f58c>] (__xeno_sys_init+0x20/0x30c) from > [<c000883c>] (do_one_initcall+0x90/0x160) > [ 0.342742] [<c000883c>] (do_one_initcall+0x90/0x160) from > [<c08388a0>] (kernel_init+0xd8/0x180) > [ 0.342773] [<c08388a0>] (kernel_init+0xd8/0x180) from [<c000dfec>] > (kernel_thread_exit+0x0/0x8) > [ 0.342895] Division by zero in kernel. > [ 0.342926] [<c00134b8>] (unwind_backtrace+0x0/0xe0) from > [<c0382d2c>] (Ldiv0_64+0x8/0x18) > [ 0.342956] [<c0382d2c>] (Ldiv0_64+0x8/0x18) from [<c04df8a4>] > (rthal_arch_init+0xb0/0xd8) > [ 0.342987] [<c04df8a4>] (rthal_arch_init+0xb0/0xd8) from > [<c00c4564>] (rthal_init+0x7c/0x25c) > [ 0.343017] [<c00c4564>] (rthal_init+0x7c/0x25c) from [<c084f58c>] > (__xeno_sys_init+0x20/0x30c) > [ 0.343048] [<c084f58c>] (__xeno_sys_init+0x20/0x30c) from > [<c000883c>] (do_one_initcall+0x90/0x160) > [ 0.343078] [<c000883c>] (do_one_initcall+0x90/0x160) from > [<c08388a0>] (kernel_init+0xd8/0x180) > [ 0.343109] [<c08388a0>] (kernel_init+0xd8/0x180) from [<c000dfec>] > (kernel_thread_exit+0x0/0x8) > [ 0.343261] Division by zero in kernel. > [ 0.343292] [<c00134b8>] (unwind_backtrace+0x0/0xe0) from > [<c0382d2c>] (Ldiv0_64+0x8/0x18) > [ 0.343322] [<c0382d2c>] (Ldiv0_64+0x8/0x18) from [<c04df8b0>] > (rthal_arch_init+0xbc/0xd8) > [ 0.343353] [<c04df8b0>] (rthal_arch_init+0xbc/0xd8) from > [<c00c4564>] (rthal_init+0x7c/0x25c) > [ 0.343383] [<c00c4564>] (rthal_init+0x7c/0x25c) from [<c084f58c>] > (__xeno_sys_init+0x20/0x30c) > [ 0.343414] [<c084f58c>] (__xeno_sys_init+0x20/0x30c) from > [<c000883c>] (do_one_initcall+0x90/0x160) > [ 0.343444] [<c000883c>] (do_one_initcall+0x90/0x160) from > [<c08388a0>] (kernel_init+0xd8/0x180) > [ 0.343475] [<c08388a0>] (kernel_init+0xd8/0x180) from [<c000dfec>] > (kernel_thread_exit+0x0/0x8) > [ 0.343475] Xenomai: system init failed, code -9. > [ 0.343505] Xenomai: native skin init failed, code -9. > [ 0.343505] Xenomai: starting POSIX services. > [ 0.343536] Xenomai: POSIX skin init failed, code -9. > [ 0.343536] Xenomai: RTDM skin init failed, code -9. > ... > [ 5.234558] drivers/rtc/hctosys.c: unable to open rtc device (rtc0) > [ 5.241973] Waiting 2sec before mounting root device... > ^[^[^[^[[B^[[B^[[B^[[A[ 464.874786] smsc95xx 1-2.1:1.0: eth0: register > 'smsc95xx' at usb-ehci-omap.0-2.1, smsc95xx USB 2.0 Ethernet, > 62:9d:d5:c4:cf:f8 > [ 464.887939] VFS: Cannot open root device "mmcblk0p2" or > unknown-block(0,0) > [ 464.895233] Please append a correct "root=" boot option; here are the > available partitions: > [ 464.904113] Kernel panic - not syncing: VFS: Unable to mount root fs > on unknown-block(0,0) > [ 464.912811] [<c00134b8>] (unwind_backtrace+0x0/0xe0) from > [<c05e5bec>] (panic+0x50/0x188) > [ 464.921447] [<c05e5bec>] (panic+0x50/0x188) from [<c0838ca0>] > (mount_block_root+0x1d0/0x214) > [ 464.930328] [<c0838ca0>] (mount_block_root+0x1d0/0x214) from > [<c0838eb0>] (mount_root+0xe4/0x100) > [ 464.939636] [<c0838eb0>] (mount_root+0xe4/0x100) from [<c0839028>] > (prepare_namespace+0x15c/0x1bc) > [ 464.949188] [<c0839028>] (prepare_namespace+0x15c/0x1bc) from > [<c0838910>] (kernel_init+0x148/0x180) > [ 464.958831] [<c0838910>] (kernel_init+0x148/0x180) from [<c000dfec>] > (kernel_thread_exit+0x0/0x8) > > more detailed info about Linux booting is here: http://pastebin.com/54bBuXQi > > Do you have anything to suggest? As repeated many times on this list, a stack trace is meaningless if you do not provide us with the disassembly of the function which fails. In that case that would be rthal_arch_init. Anyway, something is probably wrong with the registration of the tsc emulation, or with the ipipe_timer. -- Gilles. _______________________________________________ Xenomai mailing list [email protected] http://www.xenomai.org/mailman/listinfo/xenomai
