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Have you modified L4 Kernel command line ?
by Taeung 27 Mar '14

27 Mar '14

Hello, L4 hackers :-) May I ask you a question about L4 linux ? Have you modified ' l4x_rd=rom/ramdisk-arm.rd root=1:0 ramdisk_size=4000 init=/bin/sh' in L4 kernel command ? I want to change it , as if the part of original linux's kernel command line is "root=/dev/mmcblk1p1 rootwait rw" Because I want to assign 'root' to '/dev/mmcblk1p1' or '/dev/mtdblock0' instead of 'rom/ramdisk-arm.rd'. To what I want is achieved, how to modify L4 linux kernel command line ?

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Compiling L4Linux for Pandaboard ARM Error
by Erry Pradana Darajati 25 Mar '14

25 Mar '14

Hello L4 Hackers, i am doing a project that involve L4 and Pandaboard Rev.B1 So far, i am successful to boot Fiasco with L4Re in it. And now, i'm moving on to boot the L4Linux to Pandaboard I'm following the tuts from wiki tudos quickstart. But when i'm try to *make* the L4Linux, it gave me an error like this : =============================================== GEN /media/chiqiVstorage/l4resnap/src/l4linux/TArev2/Makefile CHK include/generated/uapi/linux/version.h CC scripts/mod/empty.o HOSTCC scripts/mod/mk_elfconfig gcc: error: unrecognized argument in option '-mabi=aapcs-linux' gcc: note: valid arguments to '-mabi=' are: ms sysv CC scripts/mod/devicetable-offsets.s gcc: error: unrecognized command line option '-mno-thumb-interwork' make[3]: *** [scripts/mod/empty.o] Error 1 make[3]: *** Waiting for unfinished jobs.... gcc: error: unrecognized argument in option '-mabi=aapcs-linux' gcc: note: valid arguments to '-mabi=' are: ms sysv gcc: error: unrecognized command line option '-mno-thumb-interwork' make[3]: *** [scripts/mod/devicetable-offsets.s] Error 1 make[2]: *** [scripts/mod] Error 2 make[1]: *** [scripts] Error 2 make[1]: *** Waiting for unfinished jobs.... make: *** [sub-make] Error 2 ================================================================ Is this error caused by my GCC ? i am using GCC from the default repository of ubuntu 13.10 And also, when i'm try to *make mrproper *it gave me error : ERROR: Cannot determine L4 source directory Please properly set the path to your L4 build directory in the configuration menu. But i'm sure i set in the wrong path Is there any solution about my problems above, I am appreciating any help and answer Thank you L4 Hackers -- *Regards,* *Erry Pradana Darajati | Student of Computer Engineering* *Politeknik Elektronika Negeri Surabaya / EEPIS, Indonesia*

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Can use other root file system instead of ramdisk(ramdisk-arm.rd) ?
by Taeung 25 Mar '14

25 Mar '14

Hello , L4 hackers !!:-) Would you mind if I ask you other questions ? I've done booting "L4 linux + L4/Fiasco" on Freescale imx6q_sabre_sd. I'm using ramdisk of which name is 'ramdisk-arm.rd'. I've got the file from URL (os.inf.tu-dresden.de/download/ramdisk-arm.rd). But it is not enough to install and run X-window. There is not enough package. I really want to use 'apt-get' on L4 Linux. 1. Can is what I want possible on L4 linux ? 2. Can use other root file system instead of ramdisk(ramdisk-arm.rd) ? 3. Whatever packages which is put in a ramdisk, is it no matter ? If I put ubuntu packages in a ramdisk, is it fine? - Taeung -

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Is wrong my kernel command line, on this situation ? (Booting L4 linux)
by Taeung 24 Mar '14

24 Mar '14

Hello, every l4-hacker. I've succeeded booting "Hello world + L4/Fiasco" on Freescale i.MX6q_sabre_sd because big help of Admed, Tim, Matthias. And then, I'm trying to boot "L4 Linux + L4/Fiasco" on my board. I've configured for L4 linux build. Such as.. |System type -> ARM system type (L4 Linux) Build type (Use ARMv7) | And then, I've successfully build it. I've did "make uimage E='L4Linux ARM' ..." ,so I've got uimage. And I try to boot it ,using 'uImage' and 'u-boot.bin'. But I did not boot it on my board. It was stoped at "l4linux | panic: going to sleep forever, bye" ==================== ... (eclipsis) Trying to unpack rootfs image as initramfs... rootfs image is not initramfs (junk in compressed archive); looks like an initrd INITRD: Freeing memory. l4x: Checks passed. NetWinder Floating Point Emulator V0.97 (double precision) msgmni has been set to 126 io scheduler noop registered io scheduler deadline registered io scheduler cfq registered (default) L4 serial driver ttyLv0 at MMIO 0x1 (irq = 211, base_baud = 230400) is a L4 l4ser_shm: L4 shared mem serial driver l4cdds: No name given, not starting. brd: module loaded l4bdds: No name given, not starting. mousedev: PS/2 mouse device common for all mice TCP: cubic registered NET: Registered protocol family 17 Minicom2.6.2RAMDISK: ext2 filesystem found at block 0 RAMDISK: Loading 3072KiB [1 disk] into ram disk... done. EXT4-fs (ram0): couldn't mount as ext3 due to feature incompatibilities EXT4-fs (ram0): mounting ext2 file system using the ext4 subsystem EXT4-fs (ram0): mounted filesystem without journal. Opts: (null) VFS: Mounted root (ext2 filesystem) readonly on device 1:0. Freeing unused kernel memory: 112K (022ea000 - 02306000) Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000004 CPU: 0 PID: 1 Comm: sh Not tainted 3.13.0-l4-svn46 #1 [<0200b6ec>] (unwind_backtrace+0x0/0xf8) from [<02005308>] (show_stack+0x10/0x14) [<02005308>] (show_stack+0x10/0x14) from [<0222a17c>] (panic+0x78/0x1c0) [<0222a17c>] (panic+0x78/0x1c0) from [<02017d28>] (do_exit+0x724/0x7cc) [<02017d28>] (do_exit+0x724/0x7cc) from [<02017ea0>] (do_group_exit+0x40/0xa0) [<02017ea0>] (do_group_exit+0x40/0xa0) from [<02021754>] (get_signal_to_deliver+0x1a4/0x474) [<02021754>] (get_signal_to_deliver+0x1a4/0x474) from [<02006738>] (do_signal+0x78/0x3d4) [<02006738>] (do_signal+0x78/0x3d4) from [<02006b08>] (do_work_pending+0x74/0xcc) [<02006b08>] (do_work_pending+0x74/0xcc) from [<02009cf4>] (l4x_vcpu_entry_c+0x18ec/0x1e3c) [<02009cf4>] (l4x_vcpu_entry_c+0x18ec/0x1e3c) from [<00094e9c>] (0x94e9c) panic: going to sleep forever, bye l4linux | panic: going to sleep forever, bye ==================== I guess that the problem is somthing about ramdisk(root file system) and kernel command line might be wrong. Referentially I've used ramdisk file(ramdisk-arm.rd) and my kernel command line "setenv bootargs_mmc 'setenv bootargs ${bootargs} root=/dev/mmcblk1p1 rootwait rw video=mxcfb1:dev=ldb,LDB-XGA,if=RGB666 video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24'". How do you think about that? Is wrong my kernel command line,on this situation ? - Taeung -

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Re: l4linux
by Taeung 24 Mar '14

24 Mar '14

Hello, Tim I'm glad. Tim Your help save me !!! Thank you very much !!!! :-) I've succeed booting "L4 Linux + L4/Fiasco" on my board(Freescale i.MX6 Quad SABRE SD). After I readjustmy thread for booting, I will write document for booting it on my board. The document might help L4/Fiasco beginner or not, I'll share the document for their. Thank you again !! - Taeung - On 03/24/2014 07:33 PM, Tim Komarov wrote: > Hello, TaeWoong! > I've returned after the weekend. So, my congratulations! I guess that yo don't need my environment anymore :-) > > I suppose that your configuration of L4Linux is wrong. > > Try to build L4Linux like that (arm_defconfig, not your manual configuration): > > $mkdir builddir > > $ make O=pathtobuilddir L4ARCH=arm CROSS_COMPILER=arm-linux- arm_defconfig > > Change path to l4re-tree: > $ make O=pathtobuilddir L4ARCH=arm CROSS_COMPILER=arm-linux- menuconfig > > Build: > $ make O=pathtobuilddir L4ARCH=arm CROSS_COMPILER=arm-linux- -j5 > > It may help you!

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Can you tell me function name that means 'Entry Point: 0x11000000' ?
by Taeung 24 Mar '14

24 Mar '14

Hello, l4 hacker. I'm trying to boot "Hello world / L4/ Fiasco" on Freescale i.MX6 Quad SABRE SD board(Cortex-A9, ARMv7). I'm using 'u-boot' and 'uImage'. So, i build uimage by "make uimage E=hello ~...". And i've try to booting it on Freescale i.MX6q_sabre_sd board. But i did not it because stoped at "Starting kernel ..." !! MMC read: dev # 2, block # 2048, count 8192 ... 8192 blocks read: OK ## Booting kernel from Legacy Image at 10800000 ... Image Name: L4 Image #2 Image Type: ARM Linux Kernel Image (uncompressed) Data Size: 868352 Bytes = 848 kB Load Address: 11000000 Entry Point: 11000000 Loading Kernel Image ... OK OK Starting kernel ... uimage's file name is "bootstrap_hello.uimage". "bootstrap_hello.uimage" has information such as "bootstrap_hello.uimage: u-boot legacy uImage, L4 Image #2, Linux/ARM, OS Kernel Image (Not compressed), 868352 bytes, Thu Mar 20 13:14:42 2014, Load Address: 0x11000000, Entry Point: 0x11000000, Header CRC: 0xBEA251F3, Data CRC: 0xA0217B7D" I have a question. Can you tell me function name that means 'Entry Point: 0x11000000' ?

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Fwd: Can you tell me function name that means 'Entry Point: 0x11000000' ?
by TaeWoong Song 23 Mar '14

23 Mar '14

Begin forwarded message: > From: Taeung <treeze.taeung(a)gmail.com> > Subject: Re: Can you tell me function name that means 'Entry Point: 0x11000000' ? > Date: March 23, 2014 12:07:38 PM GMT+09:00 > To: Matthias Lange <matthias.lange(a)kernkonzept.com> > > Thank you , Matthias :-) > > Fortunately , Ahmed in L4 hackers give me a patch about UART on Freescale imx6q sabre_sd. > > But i question , again. > > I have known that entry point mean the address of the execution of the image. > But i really want to know that.. > > What is concreate function name mapping the address in L4 re source code ? > > - Taeung - > > On 03/22/2014 07:02 AM, Matthias Lange wrote: >> Hi, >> >>> On 21 Mar 2014, at 11:33, Taeung <treeze.taeung(a)gmail.com> wrote: >>> >>> Hello, l4 hacker. >>> >>> >>> I'm trying to boot "Hello world / L4/ Fiasco" on Freescale i.MX6 Quad SABRE SD board(Cortex-A9, ARMv7). >>> >>> I'm using 'u-boot' and 'uImage'. >>> So, i build uimage by "make uimage E=hello ~...". >>> And i've try to booting it on Freescale i.MX6q_sabre_sd board. >>> But i did not it because stoped at "Starting kernel ..." !! >> Probably you selected the wrong UART, so the system is not printing something on the serial line. Make sure you have the right UART driver for your platform and make sure you have selected the right one. Usually there are more than one UARTs and only one is connected to you serial line. You can also check Linux to see which UART it uses. >> >>> MMC read: dev # 2, block # 2048, count 8192 ... 8192 blocks read: OK >>> ## Booting kernel from Legacy Image at 10800000 ... >>> Image Name: L4 Image #2 >>> Image Type: ARM Linux Kernel Image (uncompressed) >>> Data Size: 868352 Bytes = 848 kB >>> Load Address: 11000000 >>> Entry Point: 11000000 >>> Loading Kernel Image ... OK >>> OK >>> >>> Starting kernel ... >>> >>> >>> uimage's file name is "bootstrap_hello.uimage". >>> "bootstrap_hello.uimage" has information such as >>> "bootstrap_hello.uimage: u-boot legacy uImage, L4 Image #2, Linux/ARM, OS Kernel Image (Not compressed), 868352 bytes, >>> Thu Mar 20 13:14:42 2014, Load Address: 0x11000000, Entry Point: 0x11000000, Header CRC: 0xBEA251F3, Data CRC: 0xA0217B7D" >>> >>> I have a question. >>> >>> Can you tell me function name that means 'Entry Point: 0x11000000' ? >> In the uimage format the entry point is defined as the address where uboot should start, as the name implies, the execution of the image. >> >> >> Matthias. >

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compile l4re for arm
by Waldo 21 Mar '14

21 Mar '14

Hi, i am running the hello world example for the arm realview (exynos4412), and i don't how create a elfimage to run the example, i compile the fiasco and l4re for arm, but the elfimage is not generated.

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Google Summer of Code - DEADLINE IS TODAY!
by Crypto Stick 21 Mar '14

21 Mar '14

Hi! Crypto Stick is an open source secure USB device for data encryption and authentication. OpenCoin is an open source system for anonymous cash. We (both projects) are aiming to collaborate on building a L4-based server system which would act as an eCash issuer server. Now, we got accepted at the upcoming Google Summer of Code 2014, which means that Google will sponsor a student working on this project during the summer with $5500. If this sounds interesting for you, please get in touch with us! Also, please share the word with fellow students. THE APPLICATION DEADLINE IS TODAY 19:00 UTC! Sorry for this last minute announcement. More details are available at: https://www.assembla.com/spaces/cryptostick/wiki/Ideas Best regards, Jan

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L4 Fiasco's scheduling in Multi-Core
by Ganis Zulfa Santoso 20 Mar '14

20 Mar '14

Hi l4-hackers, Suppose we have 2 cores (core 0 and core 1) and we have 2 tasks (task A and task B). And I assign all threads of task A to run in core 0 and all threads of task B to run in core 1. How L4 Fiasco's scheduler manages this? Will the tasks run together or they have to switch from one to another? >From what I understand, the tasks don't run together regardless which core they are located, is it correct? Thank you. Best regards, Ganis

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