On Tue, Nov 23, 2021 at 7:27 AM <guoren@xxxxxxxxxx> wrote: > > From: Guo Ren <guoren@xxxxxxxxxxxxxxxxx> > > The firmware of riscv (such as opensbi) occupy 2MB(64bit) / > 4MB(32bit) in Linux. It's very wasteful to small memory footprint > soc chip such as Allwinner D1s/F133. The kernel parameter gives a > chance to users to set the proper size of the firmware and get > more than 1.5MB of memory. This kernel parameter is redundant see my comment on other patch. regards, Anup > > Signed-off-by: Guo Ren <guoren@xxxxxxxxxxxxxxxxx> > Cc: Palmer Dabbelt <palmer@xxxxxxxxxxx> > Cc: Anup Patel <anup.patel@xxxxxxx> > Cc: Atish Patra <atishp@xxxxxxxxxxxx> > --- > Documentation/admin-guide/kernel-parameters.txt | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt > index 9725c546a0d4..ee505743c8f4 100644 > --- a/Documentation/admin-guide/kernel-parameters.txt > +++ b/Documentation/admin-guide/kernel-parameters.txt > @@ -4964,6 +4964,9 @@ > [KNL] Disable ring 3 MONITOR/MWAIT feature on supported > CPUs. > > + riscv.fwsz=nn[KMG] > + [RISC-V] Determine firmware size to save memory > + > ro [KNL] Mount root device read-only on boot > > rodata= [KNL] > -- > 2.25.1 >
