On Fri, Dec 22, 2023 at 9:32 PM Raymond Mao <raymond....@linaro.org> wrote: > > Save boot arguments x[0-3] into an array for handover of bloblist from > previous boot stage. > > Signed-off-by: Raymond Mao <raymond....@linaro.org> > --- > Changes in v2 > - New patch file created for v2. > > arch/arm/cpu/armv8/start.S | 14 ++++++++++++++ > 1 file changed, 14 insertions(+) >
Reviewed-by: Simon Glass <s...@chromium.org> > diff --git a/arch/arm/cpu/armv8/start.S b/arch/arm/cpu/armv8/start.S > index 6cc1d26e5e..8e704f590e 100644 > --- a/arch/arm/cpu/armv8/start.S > +++ b/arch/arm/cpu/armv8/start.S > @@ -370,5 +370,19 @@ ENTRY(c_runtime_cpu_setup) > ENDPROC(c_runtime_cpu_setup) > > WEAK(save_boot_params) > +#if (IS_ENABLED(CONFIG_OF_BOARD) && IS_ENABLED(CONFIG_BLOBLIST)) > + adr x9, saved_args > + stp x0, x1, [x9] > + /* Increment the address by 16 bytes for the next pair of values */ That seems obvious, but I suppose a comment here is fine. > + stp x2, x3, [x9, #16] > +#endif > b save_boot_params_ret /* back to my caller */ > ENDPROC(save_boot_params) > + > +.section .data > +.global saved_args > +saved_args: > + .rept 4 > + .xword 0 > + .endr > +END(saved_args) > -- > 2.25.1 > Regards, Simon
