l4-hackers October 2015

l4-hackers@os.inf.tu-dresden.de

9 participants
11 discussions

Graphical desktop, l4con, mag
by teclis High Elf 02 Jun '17

02 Jun '17

Guten Tag, I've got the Hello app runing with fiasco and l4re in qemu, how do I get the graphical UI and console running that I see on the screen shots page? Do I need to use l4con and mag? I don't see an entry with l4con in modules.list. danke * <http://german.about.com/library/media/Audio/gutentag.wav>*

6 15

libfs/ FUSE on L4Re
by Stark, Josef 31 May '17

31 May '17

Hello, yesterday I came across a very interesting paper titled "Porting FUSE to L4Re", accessible here: http://os.inf.tu-dresden.de/papers_ps/pester-beleg.pdf For porting FUSE, the author uses a library called "libfs" which provides filesystem request forwarding and processing, if I understood correctly. It reads as if libfs is already included in L4Re. However, I couldn't find neither FUSE nor libfs in the current L4Re snapshot. Are they by any chance publicly available somewhere else, or are both not to be published? Cheers, Josef

4 7

Hiring engineers for seL4 work
by Gernot Heiser 12 Jan '16

12 Jan '16

Do you want to be paid for contributing to the seL4 microkernel and its ecosystem, and getting your code used in critical systems on a large scale? As part of a kick-ass team, while living in Sydney, one of the world’s most liveable cities? The seL4 team at DATA61 (formerly NICTA) is hiring OS engineers, see https://ssrg.nicta.com.au/jobs/OS-engineers2015 We’re also hiring: - proof engineers: https://ssrg.nicta.com.au/jobs/proof-engineers2015 - researchers/postdocs: https://ssrg.nicta.com.au/jobs/OS-researchers2015 Gernot

6 25

Question about memory management in L4 Fiasco O.C + L4re
by Mahdi Aichouch 04 Jan '16

04 Jan '16

Hello, I have some questions concerning memory management in Fiasco O.C + L4re. I would like to test two L4Linux instances, and for each L4Linux instance I want to reserve one static fixed physical memory partition. For instance, one 128MB for the first L4Linux and one 128MB for the second. Knowing that Fiasco O.C. uses "on demand paging" to allocate pages for user tasks, is it possible that each partition of L4Linux could be allocated a static physical memory region composed of contiguous physical frames. For instance, one memory region starting from 128MB to 256MB for the first L4Linux, and second memory region from 256MB to 512MB for the second L4Linux. Each memory region is allocated exclusively to one L4Linux instance. I would like to know if it is possible to load all the code + data of a L4Linux instance into its reserved memory partition, so no page fault will be encountered during runtime. Is it possible to tell me if these above operations could be realized in Fiasco O.C and L4re? If the answer is yes, is it possible to tell me what are the objects that should be used or adapted in order to implement these? What are the issues that I should pay attention to? Many thanks in advance for your answer. Best regards, Mahdi

2 37

Microkernel Meetup
by Bjoern Doebel 02 Nov '15

02 Nov '15

Hi all, as the last Dresden Microkernel Meetup took place already more than 6 months ago, we surely need to set up a new one! Please chose a date: http://dudle.inf.tu-dresden.de/mks1115/ I am going to pick a location once we settled on a date. (Most likely: Shamrock Irish Pub, but select something else on Mondays...) Bjoern

1 1

Re: Porting i.MX6 FEC ethernet device driver to L4Linux (l4re-snapshot-2014092821)
by Mahdi Aichouch 30 Oct '15

30 Oct '15

Hello Martin, Thank you very much for your help! Your correction fixed the issue. Best regards, Mahdi >put the l4x_register_platform_device_callback behind the #endif. > l4x_register_platform_device_callback("aaci", aaci_cb); > #endif > l4x_register_platform_device_callback("imx6q-fec.dev", imx6q_device_cb_fec); > } On Thu, Oct 29, 2015 at 3:09 PM, Martin Schröder < martin.schroeder(a)openlimit.com> wrote: > Hi, > > Am 29.10.2015 um 14:42 schrieb Mahdi Aichouch: > >> Hello, >> >> Starting from a previous work [1] , I ported the i.MX6 FEC ethernet >> device driver to L4Linux (l4re-snapshot-2014092821). >> >> There is no compilation error, but when I tested on the Freescale i.MX6 >> Sabre SDB, it seems that L4Linux does not start the device. >> Below are the boot messages of L4 Fiasco + L4Linux. >> >> Does someone have an idea of what might be missing or wrong. >> >> To reproduce the test case using l4re-snapshot-2014092821, all >> configuration files and patches are given below. >> >> Thank you very much in advance. >> > > > > [...] > > > >> static int dev_init_done; >> @@ -238,6 +307,7 @@ >> l4x_register_platform_device_callback("compactflash", >> realview_device_cb_pata); >> l4x_register_platform_device_callback("smsc911x", >> realview_device_cb_smsc); >> l4x_register_platform_device_callback("aaci", aaci_cb); >> +l4x_register_platform_device_callback("imx6q-fec.dev", >> imx6q_device_cb_fec); >> #endif >> } >> > > put the l4x_register_platform_device_callback behind the #endif. > > > l4x_register_platform_device_callback("aaci", aaci_cb); > > #endif > > l4x_register_platform_device_callback("imx6q-fec.dev", > imx6q_device_cb_fec); > > } > > > Martin >

1 0

Porting i.MX6 FEC ethernet device driver to L4Linux (l4re-snapshot-2014092821)
by Mahdi Aichouch 29 Oct '15

29 Oct '15

Hello, Starting from a previous work [1] , I ported the i.MX6 FEC ethernet device driver to L4Linux (l4re-snapshot-2014092821). There is no compilation error, but when I tested on the Freescale i.MX6 Sabre SDB, it seems that L4Linux does not start the device. Below are the boot messages of L4 Fiasco + L4Linux. Does someone have an idea of what might be missing or wrong. To reproduce the test case using l4re-snapshot-2014092821, all configuration files and patches are given below. Thank you very much in advance. Best regards, Mahdi [1] http://os.inf.tu-dresden.de/pipermail/l4-hackers/2014/006462.html L4 Bootstrapper Build: #10 Thu Oct 29 12:00:00 CET 2015, 4.8.3 20140320 (prerelease) Scanning up to 1024 MB RAM, starting at offset 32MB Memory size is 1024MB (10000000 - 4fffffff) RAM: 0000000010000000 - 000000004fffffff: 1048576kB Total RAM: 1024MB Scanning fiasco Scanning sigma0 Scanning moe Moving up to 10 modules behind 11100000 moving module 02 { 11928000-1196163f } -> { 11a18000-11a5163f } [235072] moving module 01 { 1191e000-1192738b } -> { 11a0e000-11a1738b } [37772] moving module 00 { 118b8000-1191d98b } -> { 119a8000-11a0d98b } [416140] moving module 09 { 115b8000-118b7fff } -> { 116a8000-119a7fff } [3145728] moving module 08 { 111d6000-115b7497 } -> { 112c6000-116a7497 } [4068504] moving module 07 { 111d5000-111d517b } -> { 112c5000-112c517b } [380] moving module 06 { 1107e000-111d446f } -> { 1116e000-112c446f } [1401968] moving module 05 { 1107d000-1107d35b } -> { 1116d000-1116d35b } [860] moving module 04 { 1102a000-1107cc1f } -> { 1111a000-1116cc1f } [338976] moving module 03 { 11010000-11029473 } -> { 11100000-11119473 } [103540] Loading fiasco Loading sigma0 Loading moe find kernel info page... found kernel info page at 0x10002000 Regions of list 'regions' [ 10000000, 1000015f] { 160} Root mbi_rt [ 10001000, 10001aff] { b00} Kern fiasco [ 10002000, 10072fff] { 71000} Kern fiasco [ 10090000, 10096edf] { 6ee0} Sigma0 sigma0 [ 10098000, 1009e177] { 6178} Sigma0 sigma0 [ 10140000, 10171d77] { 31d78} Root moe [ 10178000, 101934ab] { 1b4ac} Root moe [ 11000000, 1100f58f] { f590} Boot bootstrap [ 11100000, 119a7fff] { 8a8000} Root Module API Version: (87) experimental Sigma0 config ip:10090100 sp:00000000 Roottask config ip:10140260 sp:00000000 Starting kernel fiasco at 100012c8 Hello from Startup::stage2 Per_cpu_data_alloc: (orig: 0xf0062390-0xf0062d58) Number of IRQs available at this GIC: 160 FPU0: Arch: VFPv3(3), Part: VFPv3(30), r: 4, v: 9, i: 41, t: hard, p: dbl/sngl L2: ID=410000c7 Type=9e340340 Aux=32070000 WMask=ffff S=0 L2: Type L2C-310 Size = 1024kB Ways=16 Waysize=64 GIC: Switching IRQ 9 to secure GIC: Switching IRQ 8 to secure GIC: Switching IRQ 10 to secure GIC: Switching IRQ 11 to secure GIC: Switching IRQ 58 to secure SERIAL ESC: allocated IRQ 58 for serial uart Not using serial hack in slow timer handler. Welcome to Fiasco.OC (arm)! L4/Fiasco.OC arm microkernel (C) 1998-2013 TU Dresden Rev: rexported compiled with gcc 4.8.3 for i.MX6 [] Build: #173 Thu Oct 29 11:16:01 CET 2015 Per_cpu_data_alloc: (orig: 0xf0062390-0xf0062d58) KERNEL: Warning: Buddy::alloc: Size mismatch: 9c8 v 1000 Allocate 2504 bytes (2KB) for CPU[4] local storage (offset=1187c70, 0xf11ea000-0xf11ea9c8) GIC: Switching IRQ 29 to secure Number of CPUs: 4 Calibrating timer loop... Per_cpu_data_alloc: (orig: 0xf0062390-0xf0062d58) done. KERNEL: Warning: Buddy::alloc: Size mismatch: 9c8 v 1000 Allocate 2504 bytes (2KB) for CPU[1] local storage (offset=1189c70, 0xf11ec000-0xf11ec9c8) MDB: use page size: 20 MDB: use page size: 12 SIGMA0: Hello! KIP @ 10002000 allocated 4KB for maintenance structures SIGMA0: Dump of all resource maps RAM:------------------------ [4:10000000;10000fff] [0:10073000;1008ffff] [0:10097000;10097fff] [0:1009f000;1013ffff] [4:10140000;10171fff] [0:10172000;10177fff] [4:10178000;10193fff] [0:10194000;110fffff] [4:11100000;119a7fff] [0:119a8000;4effffff] IOMEM:---------------------- [0:0;fffffff] [0:50000000;ffffffff] MOE: Hello world FPU1: Arch: VFPv3(3), Part: VFPv3(30), r: 4, v: 9, i: 41, t: hard, p: dbl/sngl MGIC: Switching IRQ 29 to secure OCache config: ON EID_PFR[01]: 00001231 00000011: foPer_cpu_data_alloc: (orig: 0xf0062390-0xf0062d58) und ID_[DA]FR0: 00010444 00000000 ID_MMFR[04]: 00100103 20000000 01230000 00102111 1CPU[1]: goes to idle loop 0 KERNEL: Warning: Buddy::alloc: Size mismatch: 9c8 v 1000 2250Allocate 2504 bytes (2KB) for CPU[2] local storage (offset=113fc70, 0xf11a2000-0xf11a29c8) 0 KByte free memory MOE: found RAM from 10000000 to 4f000000 MOE: allocated 1008 KByte for the page array @0x10194000 MOE: virtual user address space [0-bfffffff] MOE: rom name space cap -> [C:501000] BOOTFS: [11100000-11119474] [C:503000] l4re BOOTFS: [1111a000-1116cc20] [C:504000] ned BOOTFS: [1116d000-1116d35c] [C:505000] l4lx.cfg BOOTFS: [1116e000-112c4470] [C:506000] io BOOTFS: [112c5000-112c517c] [C:507000] arm-imx6.io BOOTFS: [112c6000-116a7498] [C:50800FPU2: Arch: VFPv3(3), Part: VFPv3(30), r: 4, v: 9, i: 41, t: hard, p: dbl/sngl 0GIC: Switching IRQ 29 to secure ] vmlinCache config: ON Per_cpu_data_alloc: (orig: 0xf0062390-0xf0062d58) uzID_PFR[01]: 00001231 00000011.ar KERNEL: Warning: Buddy::alloc: Size mismatch: 9c8 v 1000 m ID_[DA]FR0: 00010444 00000000 Allocate 2504 bytes (2KB) for CPU[3] local storage (offset=1149c70, 0xf11ac000-0xf11ac9c8) ID_MMFR[04]: 00100103 20000000 01230000 00102111 CPU[2]: goes to idle loop BOOTFS: [116a8000-119a8000] [C:509000] ramdisk-arm.rd MOE: cmdline: moe rom/l4lx.cfg MOE: Starting: rom/ned rom/l4lx.cfg MOE: loading 'rom/ned' Ned says: Hi World! Ned: loading file: 'rom/l4lx.cfg' IO | Io service IO | Verboseness level: 4 FPU3: Arch: VFPv3(3), Part: VFPv3(30), r: 4, v: 9, i: 41, t: hard, p: dbl/sngl IC: Switching IRQ 29 to secure [Cache config: ON 3ID_PFR[01]: 00001231 000000113mIO ID_[DA]FR0: 00010444 00000000 ID_MMFR[04]: 00100103 20000000 01230000 00102111 CPU[3]: goes to idle loop | unused physical memory space: IO | [00000000000000-0000000fffffff] IO | [00000050000000-000000ffffffff] IO | Loading: config 'rom/arm-imx6.io' IO | l4linux: [N12_GLOBAL__N_112Virtual_sbusE] IO | Resources: ==== start ==== IO | Resources: ===== end ===== IO | L4ICU: [N2Vi6Sw_icuE] IO | Resources: ==== start ==== IO | Resources: ===== end ===== IO | imx6q-fec.dev: [N2Vi9Proxy_devE] IO | Resources: ==== start ==== IO | IOMEM [00000002188000-0000000218bfff 4000] non-pref (32bit) (align=3fff flags=2) IO | IRQ [00000000000096-00000000000096 1] none (32bit) (align=0 flags=1) IO | IRQ [00000000000097-00000000000097 1] none (32bit) (align=0 flags=1) IO | Resources: ===== end ===== IO | dmamem: [N2Vi9Proxy_devE] IO | Resources: ==== start ==== IO | IOMEM [00000010430000-000000104affff 80000] non-pref (32bit) (align=7ffff flags=2) IO | Resources: ===== end ===== IO | Real Hardware ----------------------------------- IO | System Bus: hid= IO | Resources: ==== start ==== IO | Resources: ===== end ===== IO | NIC: hid=imx6q-fec.0 IO | Clients: ===== start ==== IO | imx6q-fec.dev: [N2Vi9Proxy_devE] IO | Clients: ===== end ==== IO | Resources: ==== start ==== IO | IOMEM [00000002188000-0000000218bfff 4000] non-pref (32bit) (align=3fff flags=2) IO | IRQ [00000000000096-00000000000096 1] none (32bit) (align=0 flags=1) IO | IRQ [00000000000097-00000000000097 1] none (32bit) (align=0 flags=1) IO | Resources: ===== end ===== IO | DMAMEM: hid=dmamem IO | Clients: ===== start ==== IO | dmamem: [N2Vi9Proxy_devE] IO | Clients: ===== end ==== IO | Resources: ==== start ==== IO | IOMEM [00000010430000-000000104affff 80000] non-pref (32bit) (align=7ffff flags=2) IO | Resources: ===== end ===== IO | warning: could not register control interface at cap 'platform_ctl' IO | Ready. Waiting for request. l4linux | PH 0 (t: 1) offs=00008000 vaddr=02000000 vend=02486494 l4linux | phys=02000000 ephys=02486494 l4linux | f_sz=003c339c memsz=00486494 flgs=rwx l4linux | L4LINUX: Ma DBG: Virtual Address 02000000 End 02486494 l4linux | Physical Address 02000000 End 02486494 l4linux | PH 1 (t: 4) offs=00373e1c vaddr=0236be1c vend=0236be40 l4linux | phys=0236be1c ephys=0236be40 l4linux | f_sz=00000024 memsz=00000024 flgs=r-x l4linux | L4LINUX: Ma DBG: Virtual Address 0236be1c End 0236be40 l4linux | Physical Address 0236be1c End 0236be40 l4linux | PH 2 (t: 1685382481) offs=00000000 vaddr=00000000 vend=00000000 l4linux | phys=00000000 ephys=00000000 l4linux | f_sz=00000000 memsz=00000000 flgs=rwx l4linux | L4LINUX: Ma DBG: Virtual Address 00000000 End 00000000 l4linux | Physical Address 00000000 End 00000000 l4linux | L4LINUX: Ma DBG: Starting binary at 0x2000360, argc=13 argv=0xafff4f74 *argv=0xb1007ff0 argv0=rom/vmlinuz.arm l4linux | External resolver is at 0xa800075c l4linux | ======> L4Linux starting... <======== l4linux | Linux version 3.16.0-l4 (aichouch@aichouch-ThinkCentre-M90) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-29) ) #41 SMP Thu Oct 29 11:59:28 CET 2015 l4linux | Binary name: rom/vmlinuz.arm l4linux | This is an AEABI build. l4linux | Linux kernel command line (12 args): mem=64M console=ttyLv0 l4x_rd=rom/ramdisk-arm.rd root=1:0 ramdisk_size=4000 rw init=/linuxrc earlyprintk=1 showpfexc=1 showghost=1 print-fatal-signals=1 ip=dhp l4linux | CPU mapping (l:p)[1]: 0:0 l4linux | Image: 020000a0 - 02600000 [6143 KiB]. l4linux | Areas: Text: 020000a0 - 02396000 [3671kB] (a bit longer) l4linux | Data: 02396000 - 023be4a0 [161kB] l4linux | Initdata: 0236c000 - 02395900 [166kB] l4linux | BSS: 023c339c - 02486494 [780kB] l4linux | Device scan: l4linux | Device: L4ICU l4linux | Device: imx6q-fec.dev l4linux | MEM: 02188000 - 0218bfff l4linux | IRQ: 00000096 - 00000096 l4linux | IRQ: 00000097 - 00000097 l4linux | Device: dmamem l4linux | MEM: 10430000 - 104affff l4linux | Device scan done. l4linux | L4LINUX: Ma DBG: l4lx_thread_create: Created thread 415 (cpu0) (u:b3000e00, v:b3000c00, sp:02397fa4) l4linux | main thread will be 415 l4linux | l4x_register_pointer_section: addr = 02000000 size = 4747264 l4linux | section-with-init: Virt: 0x2000000 to 0x2486493 [4633 KiB] l4linux | section-with-init: Phys: 0x104bb000 to 0x10941493, [4633 KiB] l4linux | Main thread running, waiting... l4linux | Main thread running, waiting... l4linux | stext virt 020000a0, phys 104bb0a0 l4linux | etext virt 02396000, phys 10851000 l4linux | L4x: Memory size: 64MB l4linux | L4x: Setting superpages for main memory l4linux | L4x: Adjusted memory start: 02000000 l4linux | Main memory: Virt: 0x2600000 to 0x65fffff [65536 KiB] l4linux | Main memory: Phys: 0x11a00000 to 0x159fffff, [65536 KiB] l4linux | l4x: vmalloc area: 06600000 - 0e600000 l4linux | l4x_register_pointer_section: addr = 02000000 size = 4747264 l4linux | text: Virt: 0x2000000 to 0x2486493 [4633 KiB] l4linux | text: Phys: 0x104bb000 to 0x10941493, [4633 KiB] l4linux | Booting Linux on physicl CPU 0x0 Linux version 3.16.0-l (aichouch@aichouch-ThinCentre-M90) (gcc versionm 4.8.3 20140320 (prerelease) (Sourcery CodeBenc Lite 2014.05-29) ) #41 MP Thu Oct 29 11:59:28 CmET 2015 CPU: Fiasco [412fc09a]revision 10 (ARMv7), cr=0000000 CPU: PIPT / VIPT nonalasing data cache, VIPT nnaliasing instruction camche Machine: L4 Ignoring unrecognised ag 0x00000000 bootconsole [earlykdb0 enabled Forcing write-allocatecache policy for SMP Forcing shared mapping for SMP Memory policy: Data cahe writealloc Page fault: addr = bffff003 pc = 0236fb80 (rw, T) l4linux | Forward PF to our pager l4linux | Loading: rom/ramdisk-arm.rd l4linux | INITRD: Size of RAMdisk is 3072KiB l4linux | INITRD: 00002000 - 0030000 l4x_virt_to_phys: Could not translate virt. address 0x2000 l4linux | v2p: 0: v:00000000-00001000 p:00000000-00001000 sz:00001000 l4linux | v2p: 1: v:02000000-02486494 p:104bb000-10941494 sz:00486494 l4linux | v2p: 2: v:02600000-06600000 p:11a00000-15a00000 sz:04000000 l4linux | v2p: 3: v:02000000-02486494 p:104bb000-10941494 sz:00486494 l4linux | ------------[ cut here ------------ WARNING: CPU: 0 PID: 0at /home/aichouch/dev/l4e-snapshot-2014092821/srmc/l4linux/arch/l4/kernel/main.c:392 l4x_virt_tophys+0x7c/0xac() Modules linked in: CPU: 0 PID: 0 Comm: swpper Not tainted 3.16.0-4 #41 [<020109b4>] (unwind_bcktrace) from [<02007684] (show_stack+0x10/0x14)m [<02007684>] (show_stak) from [<0228f2ec>] (dup_stack+0x84/0x94) [<0228f2ec>] (dump_stak) from [<02020f5c>] (wan_slowpath_common+0x6c/0mx88) [<02020f5c>] (warn_slopath_common) from [<0202014>] (warn_slowpath_nulml+0x1c/0x24) [<02021014>] (warn_slopath_null) from [<0200298>] (l4x_virt_to_phys+0xm7c/0xac) [<02002908>] (l4x_virtto_phys) from [<0236ef4c] (l4x_load_initrd+0x208m/0x240) [<0236ef4c>] (l4x_loadinitrd) from [<02370860> (setup_arch+0x89c/0x8d4m) [<02370860>] (setup_arh) from [<0236c5c8>] (strt_kernel+0x8c/0x370) [<0236c5c8>] (start_kenel) from [<00000000>] ( (null)) ---[ end trace 3406ff2bd97382e ]--- l4x_virt_to_phys: Could not translate virt. address 0x302000 l4linux | v2p: 0: v:00000000-00001000 p:00000000-00001000 sz:00001000 l4linux | v2p: 1: v:02000000-02486494 p:104bb000-10941494 sz:00486494 l4linux | v2p: 2: v:02600000-06600000 p:11a00000-15a00000 sz:04000000 l4linux | v2p: 3: v:02000000-02486494 p:104bb000-10941494 sz:00486494 l4linux | ------------[ cut here ------------ WARNING: CPU: 0 PID: 0at /home/aichouch/dev/l4e-snapshot-2014092821/srmc/l4linux/arch/l4/kernel/main.c:392 l4x_virt_tophys+0x7c/0xac() Modules linked in: CPU: 0 PID: 0 Comm: swpper Tainted: G W 3.16.0-l4 #41 [<020109b4>] (unwind_bcktrace) from [<02007684] (show_stack+0x10/0x14)m [<02007684>] (show_stak) from [<0228f2ec>] (dup_stack+0x84/0x94) [<0228f2ec>] (dump_stak) from [<02020f5c>] (wan_slowpath_common+0x6c/0mx88) [<02020f5c>] (warn_slopath_common) from [<0202014>] (warn_slowpath_nulml+0x1c/0x24) [<02021014>] (warn_slopath_null) from [<0200298>] (l4x_virt_to_phys+0xm7c/0xac) [<02002908>] (l4x_virtto_phys) from [<0236ef58] (l4x_load_initrd+0x214m/0x240) [<0236ef58>] (l4x_loadinitrd) from [<02370860> (setup_arch+0x89c/0x8d4m) [<02370860>] (setup_arh) from [<0236c5c8>] (strt_kernel+0x8c/0x370) [<0236c5c8>] (start_kenel) from [<00000000>] ( (null)) ---[ end trace 3406ff2bd97382f ]--- RAMdisk from 00002000 (00002000) to 00302000 (00302000) [3072KiB] l4linux | PERCPU: Embedded 7 page/cpu @06521000 s6400 r812 d14080 u32768 Built 1 zonelists in Zne order, mobility groupng on. Total pages: 177m16 Kernel command line: mm=64M console=ttyLv0 l4xrd=rom/ramdisk-arm.rd romot=1:0 ramdisk_size=4000 rw init=/linuxrc earlyrintk=1 showpfexc=1 showhost=1 print-fatal-signamls=1 ip=dhcp L4LINUX CEA version PID hash table entries 512 (order: -1, 2048 byes) Dentry cache hash tabl entries: 16384 (order: , 65536 bytes) Inode-cache hash tableentries: 8192 (order: 3,32768 bytes) Memory: 64776K/71680K vailable (2739K kernel cde, 161K rwdata, 764K romdata, 166K init, 780K bss, 6904K reserved) Virtual kernel memory ayout: vector : 0xbffff00 - 0xc0000000 ( 4 k) fixmap : 0xffc0000 - 0xffe00000 (2048 k) vmalloc : 0x0660000 - 0x0e600000 ( 128 M) lowmem : 0x0000000 - 0x06600000 ( 102 M) modules : 0x0101000 - 0x02000000 ( 15 M) .text : 0x0200000 - 0x0236be40 (3504 k) .init : 0x0236c00 - 0x02395900 ( 167 k) .data : 0x0239600 - 0x023be4a0 ( 162 k) .bss : 0x023c33c - 0x02486494 ( 781 k) Hierarchical RCU impleentation. l4linux RCU restricting CPUs rom NR_CPUS=4 to nr_cpu_ds=1. RCU: Adjusting geometr for rcu_fanout_leaf=16,nr_cpu_ids=1 NR_IRQS:220 l4timer: Using IRQ210 L4LINUX: Ma DBG: l4lx_thread_create: Created thread 41b (timer0) (u:b3000a00, v:00000000, sp:0241dfa0) l4linux | sched_clock: 64 bits at1000kHz, resolution 1000s, wraps every 214748364m8000ns Console: colour dummy evice 80x30 console [ttyLv0] enabled console [ttyLv0] enabld bootconsole [earlykdb0] disabled bootconsole [earlykdb0 disabled Calibrating delay loop... 1574.50 BogoMIPS (lpj=7872512) pid_max: default: 32768 minimum: 301 Mount-cache hash table entries: 1024 (order: 0, 4096 bytes) Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes) CPU: Testing write buffer coherency: ok CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 Setting up static identity map for 0x2294850 - 0x2294850 Brought up 1 CPUs SMP: Total of 1 processors activated. CPU: All CPU(s) started in SVC mode. VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4 NET: Registered protocol family 16 DMA: preallocated 256 KiB pool for atomic coherent allocations Added static device 'L4ICU' with 0 resources. Added static device 'imx6q-fec.dev' with 3 resources. DMA mem phys at 10430000 - 104affff DMA mem virt at 00302000 - 00381fff pps_core: LinuxPPS API ver. 1 registered pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti < giometti(a)linux.it> PTP clock support registered Switched to clocksource l4kipclk NET: Registered protocol family 2 TCP established hash table entries: 1024 (order: 0, 4096 bytes) TCP bind hash table entries: 1024 (order: 1, 8192 bytes) TCP: Hash tables configured (established 1024 bind 1024) TCP: reno registered UDP hash table entries: 256 (order: 1, 8192 bytes) UDP-Lite hash table entries: 256 (order: 1, 8192 bytes) NET: Registered protocol family 1 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) futex hash table entries: 256 (order: 2, 16384 bytes) 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 RAMDISK: 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) on device 1:0. Freeing unused kernel memory: 164K (0236c000 - 02395000) mount: mounting proc on /proc failed: Device or resource busy mount: mounting devtmpfs on /dev failed: No such device ifconfig: SIOCSIFADDR: No such device Please press Enter to activate this console. #/ - Modification to L4Linux: ------------------------------------------------------------------------------------------------------------------------------- 1- mach_setup.c patch: ------------------------------------------------------------------------------------------------------------------------------- --- /home/aichouch/l4re-snapshot-2014092821/src/l4linux/arch/l4/kernel/arch-arm/mach_setup.c 2014-09-28 21:51:04.000000000 +0200 +++ l4linux/arch/l4/kernel/arch-arm/mach_setup.c 2015-10-28 14:57:04.831851872 +0100 @@ -5,15 +5,84 @@ #include <linux/platform_device.h> #include <linux/ata_platform.h> #include <linux/smsc911x.h> +#include <linux/fec.h> #include <linux/slab.h> #include <linux/list.h> + #include <asm/generic/devs.h> #ifdef CONFIG_L4_DMAPOOL #include <asm/l4x/dma.h> #endif +#define PHY_ID_AR8031 0x004dd074 + +static struct resource imx6q_fec_resources[] = { + { + .start = 0x02188000, + .end = 0x0218BFFF, + .name = "imx6q-fec mem", + .flags = IORESOURCE_MEM + }, + { + .start = 150, + .end = 151, + .name = "imx6q-fec irq", + .flags = IORESOURCE_IRQ + } +}; + +static struct fec_platform_data imx6q_fec_pd = { + .phy = PHY_INTERFACE_MODE_RGMII +}; + +static struct platform_device imx6q_fec_dev = { + .name = "imx6q-fec", + .id = 0, + .resource = imx6q_fec_resources, + .num_resources = ARRAY_SIZE(imx6q_fec_resources), + .dev = { + .platform_data = &imx6q_fec_pd, + }, +}; + +static int ar8031_phy_fixup(struct phy_device *dev) +{ + u16 val; + + /* to enable AR8031 output a 125Mhz clk from CLK_25M */ + phy_write(dev, 0xd, 0x7); + phy_write(dev, 0xe, 0x8016); + phy_write(dev, 0xd, 0x4007); + + val = phy_read(dev, 0xe); + val &= 0xffe3; + val |= 0x18; + phy_write(dev, 0xe, val); + + /* introduce tx clock delay */ + phy_write(dev, 0x1d, 0x5); + val = phy_read(dev, 0x1e); + val |= 0x0100; + phy_write(dev, 0x1e, val); + + return 0; +} + +static void __init imx6q_enet_phy_init(void) +{ + if (IS_BUILTIN(CONFIG_PHYLIB)) { + phy_register_fixup_for_uid(PHY_ID_AR8031, 0xffffffff, ar8031_phy_fixup); + } +} + +static L4X_DEVICE_CB(imx6q_device_cb_fec) +{ + platform_device_register(&imx6q_fec_dev); + imx6q_enet_phy_init(); +} + static int dev_init_done; @@ -238,6 +307,7 @@ l4x_register_platform_device_callback("compactflash", realview_device_cb_pata); l4x_register_platform_device_callback("smsc911x", realview_device_cb_smsc); l4x_register_platform_device_callback("aaci", aaci_cb); + l4x_register_platform_device_callback("imx6q-fec.dev", imx6q_device_cb_fec); #endif } ------------------------------------------------------------------------------------------------------------------------------- 2- fec.h patch: ------------------------------------------------------------------------------------------------------------------------------- --- /home/aichouch/l4re-snapshot-2014092821/src/l4linux/drivers/net/ethernet/freescale/fec.h 2014-09-28 21:51:04.000000000 +0200 +++ l4linux/drivers/net/ethernet/freescale/fec.h 2015-10-28 15:02:26.943851538 +0100 @@ -19,7 +19,7 @@ #if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \ defined(CONFIG_M520x) || defined(CONFIG_M532x) || \ - defined(CONFIG_ARCH_MXC) || defined(CONFIG_SOC_IMX28) + defined(CONFIG_ARCH_MXC) || defined(CONFIG_SOC_IMX28) || CONFIG_L4 /* * Just figures, Motorola would have to change the offsets for * registers in the same peripheral device on different models @@ -147,7 +147,7 @@ /* * Define the buffer descriptor structure. */ -#if defined(CONFIG_ARCH_MXC) || defined(CONFIG_SOC_IMX28) +#if defined(CONFIG_ARCH_MXC) || defined(CONFIG_SOC_IMX28) || defined(CONFIG_L4) struct bufdesc { unsigned short cbd_datlen; /* Data length */ unsigned short cbd_sc; /* Control and status info */ ------------------------------------------------------------------------------------------------------------------------------- 3- fec_main.c patch: ------------------------------------------------------------------------------------------------------------------------------- --- /home/aichouch/l4re-snapshot-2014092821/src/l4linux/drivers/net/ethernet/freescale/fec_main.c 2014-09-28 21:51:04.000000000 +0200 +++ l4linux/drivers/net/ethernet/freescale/fec_main.c 2015-10-28 15:04:41.011851399 +0100 @@ -61,6 +61,12 @@ #include "fec.h" +#ifdef CONFIG_L4 +//ahb clock +#define clk_get_rate(x) 132000000 + +#endif + static void set_multicast_list(struct net_device *ndev); #if defined(CONFIG_ARM) @@ -2535,12 +2541,22 @@ fep->phy_interface = ret; } +#ifdef CONFIG_L4 + //Do not setup Clocks or regulator + fep->clk_ahb = NULL; + fep->clk_ipg = NULL; + fep->clk_enet_out = NULL; + fep->clk_ptp = NULL; + fep->reg_phy = NULL; +#else + fep->clk_ipg = devm_clk_get(&pdev->dev, "ipg"); if (IS_ERR(fep->clk_ipg)) { ret = PTR_ERR(fep->clk_ipg); goto failed_clk; } + fep->clk_ahb = devm_clk_get(&pdev->dev, "ahb"); if (IS_ERR(fep->clk_ahb)) { ret = PTR_ERR(fep->clk_ahb); @@ -2576,6 +2592,8 @@ fep->reg_phy = NULL; } +#endif + fec_reset_phy(pdev); if (fep->bufdesc_ex) ------------------------------------------------------------------------------------------------------------------------------- 4- fec_ptp.c patch: ------------------------------------------------------------------------------------------------------------------------------- --- /home/aichouch/l4re-snapshot-2014092821/src/l4linux/drivers/net/ethernet/freescale/fec_ptp.c 2014-09-28 21:51:04.000000000 +0200 +++ l4linux/drivers/net/ethernet/freescale/fec_ptp.c 2015-10-28 14:39:23.863852973 +0100 @@ -48,6 +48,9 @@ #include "fec.h" +//ahb clock +#define clk_get_rate(x) 132000000 + /* FEC 1588 register bits */ #define FEC_T_CTRL_SLAVE 0x00002000 #define FEC_T_CTRL_CAPTURE 0x00000800 ------------------------------------------------------------------------------------------------------------------------------- 5- Freescale Kconfig patch: ------------------------------------------------------------------------------------------------------------------------------- --- /home/aichouch/l4re-snapshot-2014092821/src/l4linux/drivers/net/ethernet/freescale/Kconfig 2014-09-28 21:51:04.000000000 +0200 +++ l4linux/drivers/net/ethernet/freescale/Kconfig 2015-10-28 14:34:45.955853261 +0100 @@ -7,7 +7,7 @@ default y depends on FSL_SOC || QUICC_ENGINE || CPM1 || CPM2 || PPC_MPC512x || \ M523x || M527x || M5272 || M528x || M520x || M532x || \ - ARCH_MXC || ARCH_MXS || (PPC_MPC52xx && PPC_BESTCOMM) + ARCH_MXC || ARCH_MXS || (PPC_MPC52xx && PPC_BESTCOMM) || L4 ---help--- If you have a network (Ethernet) card belonging to this class, say Y and read the Ethernet-HOWTO, available from @@ -23,7 +23,7 @@ config FEC tristate "FEC ethernet controller (of ColdFire and some i.MX CPUs)" depends on (M523x || M527x || M5272 || M528x || M520x || M532x || \ - ARCH_MXC || SOC_IMX28) + ARCH_MXC || SOC_IMX28) || L4 default ARCH_MXC || SOC_IMX28 if ARM select PHYLIB select PTP_1588_CLOCK ------------------------------------------------------------------------------------------------------------------------------- 6- L4Linux KConfig patch: ------------------------------------------------------------------------------------------------------------------------------- --- /home/aichouch/l4re-snapshot-2014092821/src/l4linux/arch/l4/Kconfig 2014-09-28 21:51:04.000000000 +0200 +++ l4linux/arch/l4/Kconfig 2015-10-28 14:39:21.515852975 +0100 @@ -63,16 +63,21 @@ config L4_PLATFORM_GENERIC bool "Generic" select CLKDEV_LOOKUP - select L4_CLK_NOOP + select HAVE_CLK_PREPARE + select HAVE_MACH_CLKDEV + select COMMON_CLK config L4_PLATFORM_REALVIEW bool "Realview" select CLKDEV_LOOKUP select OUTER_CACHE - select L4_CLK_NOOP + endchoice +config L4_CLK_NOOP + bool "L4 Clock Noop" + depends on (L4_PLATFORM_GENERIC || L4_PLATFORM_REALVIEW) menu "Features" - Note that the L4_CLK_NOOP option should be disabled otherwise a link error occurs when compiling L4Linux. ------------------------------------------------------------------------------------------------------------------------------- 7- arm-imx6.io file: ------------------------------------------------------------------------------------------------------------------------------- hw-root { NIC => new Device() { .hid = "imx6q-fec.0"; new-res Mmio(0x02188000 .. 0x0218BFFF); new-res Irq(150); new-res Irq(151); } DMAMEM => new Device() { .hid = "dmamem"; new-res Mmio_ram(0x80000, 0); } } l4linux => new System_bus() { #NIC => wrap(hw-root.NIC); "imx6q-fec.dev" => wrap(hw-root.NIC); "dmamem" => wrap(hw-root.DMAMEM); } ------------------------------------------------------------------------------------------------------------------------------- 8- l4lx.cfg file: ------------------------------------------------------------------------------------------------------------------------------- -- vim:set ft=lua: loader = L4.default_loader; vbus_l4linux = loader:new_channel(); local lxname = "vmlinuz"; if L4.Info.arch() == "arm" then lxname = "vmlinuz.arm"; end loader:start( { caps = { sigma0 = L4.cast(L4.Proto.Factory, L4.Env.sigma0):create(L4.Proto.Sigma0); icu = L4.Env.icu; l4linux = vbus_l4linux:svr(); }, log = { "IO", "y" }, l4re_dbg = L4.Dbg.Warn, }, "rom/io -vvv rom/arm-imx6.io"); L4.default_loader:start( { caps = { vbus = vbus_l4linux; log = L4.Env.log:m("rws"), }, l4re_dbg = L4.Dbg.Warn, log = { "l4linux", "yellow" }, }, "rom/" .. lxname .. " mem=64M console=ttyLv0 l4x_rd=rom/ramdisk-" .. L4.Info.arch() .. ".rd root=1:0 ramdisk_size=4000 rw init=/linuxrc earlyprintk=1 showpfexc=1 showghost=1 print-fatal-signals=1 ip=dhc\ p");

2 1

Sharing one ethernet network device between two L4Linux instances
by Mahdi Aichouch 27 Oct '15

27 Oct '15

Hello, I was able to run two L4linux instances on top of L4 Fiasco OC using a Qemu emulator of a versatile express-a9 board . I would like to make these two instances share one ethernet network device. I would like also to switch between the two L4Linux shell, because in Qemu only one shell is accessible. I followed this guide[1] to connect two L4Linux instances using "l4shmnet", and this thread [2] to get access to the shell when testing on Qemu. However, the "l4shmnet" is not working correctly, both L4Linux display this message: shmns: Requesting, Shmsize 1024 Kbytes shmns: Failed to establish communication Could someone help me building such a working configuration. Is it possible to share a working Qemu command with the right option for the network? This is my Qemu command $> qemu-system-arm -cpu cortex-a9 -M vexpress-a9 -smp 1 -no-reboot -m 1024M -kernel bin/arm_armv7a/bootstrap_L4Linux_ARM.elf -nographic -net nic,model=lan9118 -net user Is it also possible to share a working lua configuration file? This is my lua l4lx.cfg file: -- vim:set ft=lua: local lxname = "vmlinuz"; if L4.Info.arch() == "arm" then lxname = "vmlinuz.arm"; end local shmns = L4.default_loader:create_namespace({ shm = "placeholder" }); L4.default_loader:start( { { ldr_flags = L4.Ldr_flags.eager_map }, caps = { log = L4.Env.log:m("rws"), }, l4re_dbg = L4.Dbg.Warn, log = { "l4linux", "yellow" }, shmns = shmns:mode("rw"), }, "rom/" .. lxname .. " earlyprintk=1 showpfexc=1 showghost=1 mem=64M l4shmnet.add=shmns,macpart=1,create console=ttyLv0 l4x_rd=rom/ramdisk-" .. L4.Info.arch() .. ".rd root=1:0 ramdisk_size=32768 init=/li\ nuxrc print-fatal-signals=1"); L4.default_loader:start( { { ldr_flags = L4.Ldr_flags.eager_map }, caps = { log = L4.Env.log:m("rws"), }, l4re_dbg = L4.Dbg.Warn, log = { "l4linux2", "green" }, shmns = shmns:mode("rw"), }, "rom/" .. lxname .. " earlyprintk=1 showpfexc=1 showghost=1 mem=64M l4shmnet.add=shmns,macpart=2 console=ttyLv0 l4x_rd=rom/ramdisk-" .. L4.Info.arch() .. ".rd root=1:0 ramdisk_size=32768 init=/linuxrc p\ rint-fatal-signals=1"); Thank you very much in advance. Best regards, Mahdi [1] http://wiki.tudos.org/L4Linux/shmnet [2] http://os.inf.tu-dresden.de/pipermail/l4-hackers/2013/005775.html

3 5

Application on top of L4re
by Yuxin Ren 27 Oct '15

27 Oct '15

Hi, Are there any relative complex and non-trivial applications on top of Fiasco and l4Re? If so, where can I get the source code? Thanks a lot. Yuxin

3 4

make clean (really!)
by ba_f 12 Oct '15

12 Oct '15

Hello, i try to build the newest snapshot while still having an old one on the disk. Unfortunately, 'make setup' crashes when looking for Cross Tools. Anyway, i don't think it has something to do with the new snapshot, but some hidden setup files storing my old config. Because, when i rename my old snapshot and then try to rebuild it, it crashes as well. So, how do i make the setup really clean? 'make clean' seems not enough, since it still knows some old configs. Where are those hidden files, and how to remove them? Thanks.

2 6

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l4-hackers October 2015