Hi Wladislav, I don't have much experience with this platform, but can RAM be remapped to a lower physical address range by using the MPAX?
Although you might have problems later regarding LPAE, your current issue might be unrelated. It could be memory corruption caused by conflicting/aliasing addresses for the bootloader, elfloader or their associated stacks. You could try changing the address at which the elfloader is loaded and executed: https://github.com/seL4/seL4_tools/blob/master/elfloader-tool/gen_boot_image.sh#L29 - Alex Kroh On Fri, 2017-01-13 at 01:22 +0000, adrian.da...@data61.csiro.au wrote: > Hi Wladislav, > > The short answer is that LPAE is not currently used or supported by > seL4 and so you will not be able to describe physical memory that > resides above 4gb to it. > > Adrian > > On Fri 13-Jan-2017 12:20 AM, Wladislav Wiebe wrote: > > > Hello, > > > > I am trying to integrate TI Keystone 2 platform to seL4. > > What I have done so far is basically an initial port of the > > Kernel/libs/elfloader/Platform components > > and introducing a new keystone defconfig. > > > > 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 > > > > At the end I am able to generate an image which looks like: > > > > $ arm-cortexa15-linux-gnueabihf-readelf -e > > images/sel4test-driver-image-arm-keystone > > ELF Header: > > Class: ELF32 > > .. > > Entry point address: 0xc0008000 > > .. > > (I am using the same entry point as Linux use it) > > > > > > So far, it stops booting in the elfloader -- output log: > > .. > > [ 29.705] ## Starting application at 0xc0008000 ... > > > > ELF-loader started on CPU: ARM Ltd. Cortex-A15 r2p4 > > paddr=[c0008000..c032841f] > > > > -> Stop here <- > > > > Seems it stops loading @ elf_getMemoryBounds(). > > > > I suppose it is related to fact that the physical start address > > starts @ 0x840000000 which is beyond 32 Bit - so, LPAE support is required. > > > > The physical RAM setup looks like: > > bank 0: > > addr: 0x840000000 > > size: 0x17ec5000 (382 MB) > > > > bank 1: > > addr: 0x880000000 > > size: 0x80000000 (2048 MB) > > > > Do you have an idea if this is supposed to be supported on seL4? > > What should be the "physBase" and the "kernelBase" for such a setup? > > How should the "static const p_region_t BOOT_RODATA avail_p_regs" looks > > like? > > > > Thanks in advance! > > _______________________________________________ > Devel mailing list > Devel@sel4.systems > https://sel4.systems/lists/listinfo/devel _______________________________________________ Devel mailing list Devel@sel4.systems https://sel4.systems/lists/listinfo/devel
