I tried booting sel4test in bbb. but i got the following after u-boot. Any idea for this crash ? U-Boot# echo $loadaddr 0x82000000 U-Boot# fatload mmc 0 ${loadaddr} sel4test.bin reading sel4test.bin 4108544 bytes read in 245 ms (16 MiB/s) U-Boot# go ${loadaddr} ## Starting application at 0x82000000 ... ELF-loader started on CPU: ARM Ltd. Cortex-A8 r3p2 paddr=[82000000..823fc81f] ELF-loading image 'kernel' paddr=[80000000..80036fff] vaddr=[f0000000..f0036fff] virt_entry=f0000000 ELF-loading image 'sel4test-driver' paddr=[80037000..80514fff] vaddr=[8000..4e5fff] virt_entry=21c9c Enabling MMU and paging Jumping to kernel-image entry point... Bootstrapping kernel Booting all finished, dropped to user space Caught cap fault in send phase at address 0x0 while trying to handle: unknown syscall 0xf0005 in thread 0xf7fec500 "rootserver" at address 0x18b60 With stack: 0x3d88a0: 0x84ac 0x3d88a4: 0x1711c 0x3d88a8: 0x46c0f 0x3d88ac: 0x0 0x3d88b0: 0x84ac 0x3d88b4: 0x172cc 0x3d88b8: 0x3e5224 0x3d88bc: 0x46c0f 0x3d88c0: 0x84ac 0x3d88c4: 0xecfc 0x3d88c8: 0x31 0x3d88cc: 0x0 0x3d88d0: 0x0 0x3d88d4: 0x0 0x3d88d8: 0x0 0x3d88dc: 0x0 ::DISCLAIMER:: ---------------------------------------------------------------------------------------------------------------------------------------------------- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. E-mail transmission is not guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or may contain viruses in transmission. The e mail and its contents (with or without referred errors) shall therefore not attach any liability on the originator or HCL or its affiliates. Views or opinions, if any, presented in this email are solely those of the author and may not necessarily reflect the views or opinions of HCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of authorized representative of HCL is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. Before opening any email and/or attachments, please check them for viruses and other defects. ----------------------------------------------------------------------------------------------------------------------------------------------------