[RESEND PATCH 1/2] rpi: Copy properties from firmware dtb to the loaded dtb

[Simon Glass]

Hi Antoine,

On Fri, 19 Aug 2022 at 08:08, Antoine Mazeas <antoine at karthanis.net> wrote:
>
> The RPI firmware adjusts several property values in the dtb it passes
> to u-boot depending on the board/SoC revision. Inherit some of these
> when u-boot loads a dtb itself. Specificaly copy:
>
> * /model: The firmware provides a more specific string
> * /memreserve: The firmware defines a reserved range, better keep it
> * emmc2bus and pcie0 dma-ranges: The C0T revision of the bcm2711 Soc (as
>   present on rpi 400 and some rpi 4B boards) has different values for
>   these then the B0T revision. So these need to be adjusted to boot on
>   these boards
> * blconfig: The firmware defines the memory area where the blconfig
>   stored. Copy those over so it can be enabled.
> * /chosen/kaslr-seed: The firmware generates a kaslr seed, take advantage
>   of that.
>
> Signed-off-by: Sjoerd Simons <sjoerd at collabora.com>
> Signed-off-by: Antoine Mazeas <antoine at karthanis.net>
> ---
>
>  board/raspberrypi/rpi/rpi.c | 48 +++++++++++++++++++++++++++++++++++++
>  1 file changed, 48 insertions(+)

Reviewed-by: Simon Glass <sjg at chromium.org>

I wonder if anyone has tried to drop the private firmware on the boards?

At some point copy_property() should move to fdt_support.c if others use it