mt8173: memlayout: Create DRAM DMA region for NOR flash DMA read.
NOR flash has a hardware limitation that it can't access SRAM region
after 4GB mode is enabled. We add a DRAM DMA region after 0x40000000
for NOR flash driver. So that the NOR flash driver can use this region
after 4GB mode is enabled.
BRANCH=none
BUG=chormoe-os-partner:49229
TEST=Boot to kernel on rev4 w/ 2GB ram and rev3 w/ 4GB ram.
And check /proc/meminfo.
Change-Id: Ifedc9e2dfba5d294297b3a28134997ac1dd38f94
Signed-off-by: Yidi Lin <yidi.lin@mediatek.com>
Reviewed-on: https://chromium-review.googlesource.com/327962
Reviewed-by: Julius Werner <jwerner@chromium.org>
4 files changed
