Hi Bin
Bin Meng bmeng.cn@gmail.com 於 2019年10月29日 週二 下午10:42寫道：
Hi Rick,
On Fri, Oct 25, 2019 at 2:17 PM Andes uboot@andestech.com wrote:
From: Rick Chen rick@andestech.com
To get memory size from device tree instead of get_ram_size(). This can avoid memory access fault
Could you please explain a little more about why get_ram_size() causes PMP access fault?
OpenSBI will configure pmpcfg and pmpaddr for memory protection in specific range. When get_ram_size() try to store or load memory address, it will appear access fault exception.
Thanks Rick
in U-Boot proper after PMP configurations in OpenSbi.
Signed-off-by: Rick Chen rick@andestech.com Cc: KC Lin kclin@andestech.com Cc: Alan Kao alankao@andestech.com
board/AndesTech/ax25-ae350/ax25-ae350.c | 21 ++------------------- 1 file changed, 2 insertions(+), 19 deletions(-)
Regards, Bin