It seems to be the 'swp' instruction. ARMv7 processors don't support 'swp' instruction but the prebuilt ramdisk contains a 'swp'. If my gusee is right, then you could solve this problem by enabling CONFIG_SWP_EMULATE in linux. Here's the related kernel doc: swp_emulationhttps://www.kernel.org/doc/Documentation/arm/swp_emulation .
On Fri, Feb 7, 2014 at 10:16 PM, Комаров Тимофей happycorsair@yandex.ruwrote:
Hello, guys!
I've successfully built the latest L4RE snapshot for beagleboard. Any apps and even L4Linux work like a charm. It simply rocks!
Right now I'm trying to run the latest snapshot on pandaboard. I've successfully built it. Helloworld example is OK, but L4Linux gets a certain error while booting:
l4linux | libio: Warning: Query of 'vbus' failed! l4linux | PH 0 (t: 1) offs=00008000 vaddr=02000000 vend=02362f1c l4linux | phys=02000000 ephys=02362f1c l4linux | f_sz=002de3b6 memsz=00362f1c flgs=rwx l4linux | PH 1 (t: 4) offs=002a16ec vaddr=022996ec vend=02299710 l4linux | phys=022996ec ephys=02299710 l4linux | f_sz=00000024 memsz=00000024 flgs=r-x 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 | Starting binary at 0x20002a0, argc=7 argv=0x80007f8c *argv=0xb1007ff0m l4linux | External resolver is at 0xa8000798 l4linux | ======> L4Linux starting... <======== l4linux | Linux version 3.12.0-l4 (user1@debian) (gcc version 4.7.3 (Sourcery C4 l4linux | Binary name: rom/vmlinuz.arm l4linux | This is an AEABI build. l4linux | Linux kernel command line (6 args): mem=64M console=ttyLv0 l4x_rd=romh l4linux | CPU mapping (l:p)[1]: 0:0 l4linux | Image: 02000000 - 02400000 [4096 KiB]. l4linux | Areas: Text: 02000000 - 022b8000 [2784kB] (a bit longer) l4linux | Data: 022b8000 - 022d9200 [132kB] l4linux | Initdata: 0229a000 - 022b635c [112kB] l4linux | BSS: 022de3b6 - 02362f1c [530kB] l4linux | Device scan: l4linux | Device scan done. l4linux | l4lx_thread_create: Created thread 413 (cpu0) (u:b3000e00, v:b3000c00) l4linux | main thread will be 413 l4linux | l4x_register_pointer_section: addr = 02000000 size = 3551232 l4linux | section-with-init: Virt: 0x2000000 to 0x2362f1b [3467 KiB] l4linux | section-with-init: Phys: 0x8031e000 to 0x80680f1b, [3467 KiB] l4linux | Main thread running, waiting... l4linux | L4x: Memory size: 64MB l4linux | L4x: Setting superpages for main memory l4linux | L4x: Adjusted memory start: 02000000 l4linux | Main memory: Virt: 0x2400000 to 0x63fffff [65536 KiB] l4linux | Main memory: Phys: 0x81900000 to 0x858fffff, [65536 KiB] l4linux | l4x: vmalloc area: 06400000 - 0e400000 l4linux | l4x_register_pointer_section: addr = 02000000 size = 3551232 l4linux | text: Virt: 0x2000000 to 0x2362f1b [3467 KiB] l4linux | text: Phys: 0x8031e000 to 0x80680f1b, [3467 KiB] l4linux | l4x_rd_path: rom/ramdisk-arm.rd l4linux | Loading: rom/ramdisk-arm.rd l4linux | INITRD: Size of RAMdisk is 3072KiB l4linux | RAMdisk from 00002000 to 00302000 [3072KiB] l4linux | 'swp(b)' instruction at 021ec5a0 and faulting. l4linux | Linux built for the wrong ARM version?
The last 2 lines are going to be repeated forever :-)
I've tried both 4.7 and 4.8 gcc by Linaro and CodeSourcery and always get the same error.
What can be a problem?
Greetings! Looking forward for your help!
l4-hackers mailing list l4-hackers@os.inf.tu-dresden.de http://os.inf.tu-dresden.de/mailman/listinfo/l4-hackers