[PATCH 5/6] arm: highbank: Do DRAM init from DT

Tom Rini trini at konsulko.com
Tue Apr 20 16:21:03 CEST 2021

On Mon, Apr 12, 2021 at 01:04:54AM +0100, Andre Przywara wrote:

> So far U-Boot was hard coding a (surely sufficient) memory size of 512
> MB, even though all machines out there have at least 4GB of DRAM.
> Since U-Boot uses its memory knowledge to populate the EFI memory map,
> we are missing out here, at best losing everything beyond 4GB on Midway
> boxes (which typically come with 8GB of DRAM).
> Since the management processor populated the DT memory node already with
> the detected DRAM size and configuration, we use that to populate
> U-Boot's memory bank information, which is the base for the UEFI memory
> map.
> This finally allows us to get rid of the NR_DRAM_BANKS=0 hack, that we
> had in place to avoid U-Boot messing up the DT memory node before
> loading the kernel.
> Also, to cover the whole of memory, we need to enable PHYS_64BIT.
> Signed-off-by: Andre Przywara <andre.przywara at arm.com>

Applied to u-boot/master, thanks!

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