[U-Boot] [PATCH] rpi4: enable dram bank initialization

[Alexander Graf]

On 06.09.19 13:56, matthias.bgg at kernel.org wrote:
> From: Matthias Brugger <mbrugger at suse.com>
>
> When booting through the efi stub, the memory map get's created by
> reading the dram bank information. Depending on the version of the RPi4
> this information changes. Read the device tree to initialize the dram
> bank data structure. This way the kernel is able to access the whole
> range of available memory.
>
> Signed-off-by: Matthias Brugger <mbrugger at suse.com>
> ---
> This patch is based on basic RPi4 support implemented by series:
> https://www.mail-archive.com/u-boot@lists.denx.de/msg335667.html
>
> To actually work correctly we need the series that fixes the libftd:
> https://patchwork.ozlabs.org/cover/1158304/
>
>   board/raspberrypi/rpi/rpi.c | 8 ++++++++
>   configs/rpi_4_defconfig     | 2 +-
>   2 files changed, 9 insertions(+), 1 deletion(-)
>
> diff --git a/board/raspberrypi/rpi/rpi.c b/board/raspberrypi/rpi/rpi.c
> index fa57d50c95..eea8a69551 100644
> --- a/board/raspberrypi/rpi/rpi.c
> +++ b/board/raspberrypi/rpi/rpi.c
> @@ -312,6 +312,14 @@ int dram_init(void)
>   	return 0;
>   }
>   
> +#ifdef CONFIG_BCM2711
> +int dram_init_banksize(void)
> +{
> +	return fdtdec_decode_ram_size(gd->fdt_blob, NULL, 0, NULL,


This also depends on CONFIG_OF_BOARD, no?

Alex