Image section alignment does not match required alignment

[theoparis]

Hi. I am trying to write a UEFI bootloader with EDK2 and I am building a aarch64 .efi application using the clangdwarf toolchain (through a llvm trunk build on macOS). I received this error and I haven't been able to find any information about it. Any ideas?

ProtectUefiImageCommon - 0xBDCA6940
  - 0x00000000BD3F8000 - 0x0000000000000340
!!!!!!!!  Image Section Alignment(0x20) does not match Required Alignment (0x1000)  !!!!!!!

[os-d]

Looks like you have memory protections enabled but are not aligning your images to 4K (and for aarch64 you need to align your runtime images to 64k): https://github.com/tianocore/edk2/blob/master/MdeModulePkg/Core/Dxe/Misc/MemoryProtection.c#L293.

Either you aren't using the edk2 tools_def.template or it is wrong for CLANGDWARF. You need to ensure that -z common-page-size=0x1000 is the last common-page-size option on the linker flags and for runtime types you can add the below to your DSC:

[BuildOptions.common.DXE_RUNTIME_DRIVER]
 *_CLANGDWARF_AARCH64_DLINK_FLAGS = -z common-page-size=0x10000