Re: [PATCH] RISC-V: Place DTB at 3GB boundary instead of 4GB

[Alistair Francis]

On Mon, Jan 4, 2021 at 7:11 PM Bin Meng <bmeng.cn@gmail.com> wrote:
>
> On Fri, Dec 18, 2020 at 5:48 AM Atish Patra <atish.patra@wdc.com> wrote:
> >
> > Currently, we place the DTB at 2MB from 4GB or end of DRAM which ever is
> > lesser. However, Linux kernel can address only 1GB of memory for RV32.
> > Thus, it can not map anything beyond 3GB (assuming 2GB is the starting 
> > address).
> > As a result, it can not process DT and panic if opensbi dynamic firmware
> > is used.
> >
> > Fix this by placing the DTB at 2MB from 3GB or end of DRAM whichever is 
> > lower.
> >
>
> Fixes: 66b1205bc5ab ("RISC-V: Copy the fdt in dram instead of ROM")
>
> > Signed-off-by: Atish Patra <atish.patra@wdc.com>
> > ---
> >  hw/riscv/boot.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> >
>
> Reviewed-by: Bin Meng <bin.meng@windriver.com>
> Tested-by: Bin Meng <bin.meng@windriver.com>

Thanks!

Applied to riscv-to-apply.next

Alistair

>