Hi Alex, thanks for pointing that out - I will double check the device mapping.
- Wladislav Wiebe 2017-01-24 23:24 GMT+01:00 <[email protected]>: > A "Synchronous Data abort" occurs when a virtual memory translation > fails on load/store operations. > A "Prefetch abort" occurs when a virtual memory translation fails when > loading instructions into the CPU pipeline. > An "Asynchronous Data abort" occurs when a physical memory translation > fails (ie, no RAM or peripheral is mapped to the physical address) > > The address of the fault corresponds to a kernel device mapping. My > guess is that you are not mapping kernel devices correctly at boot time: > https://github.com/seL4/seL4/blob/master/include/plat/exynos5/plat/machine/devices.h#L15 > https://github.com/seL4/seL4/blob/master/include/plat/exynos5/plat/machine/hardware.h#L26 > https://github.com/seL4/seL4/blob/master/src/arch/arm/32/machine/hardware.c#L51 > > > - Alex > > On Tue, 2017-01-24 at 17:17 +0100, Wladislav Wiebe wrote: >> could it be an TLB fault? For my understandig, based on >> http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0438g/BABFFDFD.html >> it is the DFSR = 0x7 -> b00111 >> Translation fault, 2nd level. >> >> >> Thanks! >> - Wladislav Wiebe >> >> 2017-01-24 15:42 GMT+01:00 Wladislav Wiebe <[email protected]>: >> > Hello, >> > >> > has somebody experience with running into arm_data_abort_exception >> > after enabling the MMU/paging and jumping to the kernel image: >> > .. >> > ELF-loader started on CPU: ARM Ltd. Cortex-A15 r2p4 >> > paddr=[90000000..904b041f] >> > ELF-loading image 'kernel' >> > paddr=[80000000..80033fff] >> > vaddr=[f0000000..f0033fff] >> > virt_entry=f0000000 >> > ELF-loading image 'sel4test-driver' >> > paddr=[80034000..8042dfff] >> > vaddr=[10000..409fff] >> > virt_entry=1e924 >> > Enabling MMU and paging >> > Jumping to kernel-image entry point... >> > >> > check_data_abort_exception() >> > DFAR = 0xfff01014 >> > DFSR = 0x7 >> > ADFSR = 0x0 >> > abort() called. >> > >> > I've dumped the DFAR/DFSR register -- >> > >> > Relevant config parts about the setup: >> > CONFIG_ARCH_ARM_V7A=y >> > CONFIG_ARCH_ARM=y >> > CONFIG_ARCH_AARCH32=y >> > CONFIG_ARM_CORTEX_A15=y >> > CONFIG_PLAT_KEYSTONE=y >> > >> > >> > Thanks in advance! >> > -- >> > WBR, Wladislav WIebe >> >> >> > -- WBR, Wladislav WIebe _______________________________________________ Devel mailing list [email protected] https://sel4.systems/lists/listinfo/devel
