As reported in Debian bug #1027176 relocation of the initrd may lead to overwriting memory used by the EFI sub-system.
Currently the available memory for images is determined via the lmb library functions. The lmb library has several shortcomings:
* It does not protect against overwriting one image with another. * The same routines to find reserved memory are called again and again.
In the long run we should move to allocating memory for images.
As an intermediate solutions let's add lmb-reservations for all EFI memory areas that are not EFI_CONVENTIONAL_MEMORY.
The variable $loadaddr of at least the vexpress_ca9x4 board collids with memory used by the EFI sub-system. Adjust $loadaddr for the vexpress boards to a sane value.
Heinrich Schuchardt (2): vexpress: adjust loadaddr lmb: consider EFI memory map
include/configs/vexpress_common.h | 1 + lib/lmb.c | 45 +++++++++++++++++++++++++++++++ 2 files changed, 46 insertions(+)