tree 79c287a08ac20f98c01133bf0df1e6f4b4178780
parent e3be890941d4388e8604d9fc3c093f6158b9d16a
author Bin Meng <bmeng.cn@gmail.com> 1523509328 -0700
committer Bin Meng <bmeng.cn@gmail.com> 1523868891 +0800

bootvx: x86: Explicitly clear the bootloader image size

VxWorks bootloader stores its size at a pre-defined offset @ 0x5004.
Later when VxWorks kernel boots up and system memory information is
retrieved from the E820 table, the bootloader size will be subtracted
from the total system memory size to calculate the size of available
memory for the OS.

Explicitly clear the bootloader image size otherwise if memory
at this offset happens to contain some garbage data, the final
available memory size for the kernel is insane.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>