[PATCH 01/11] imx: implement get_effective_memsize

[Fabio Estevam]

Hi Peng,

On Mon, Nov 7, 2022 at 4:13 AM Peng Fan (OSS) <peng.fan at oss.nxp.com> wrote:
>
> From: Peng Fan <peng.fan at nxp.com>
>
> To i.MX6/7 which has 2GB memory, the upper 4KB cut off, will cause the
> top 1MB not mapped as normal memory, because ARMV7-A use section
> mapping. So implement i.MX6/7 specific get_effective_memsize to fix the
> issue.
>
> Fixes: 777aaaa706bc("common/memsize.c: Fix get_effective_memsize() to check for overflow")

This commit has been reverted in master for non-Power PC platforms:

commit d1f4b090dd17ee11373859f2c91af94bf254af7a
Author: Pali Rohár <pali at kernel.org>
Date:   Sat Jan 7 22:55:26 2023 +0100

    common/memsize.c: Check for overflow in get_effective_memsize()
only for mpc85xx

    This reverts commit 777aaaa706bc ("common/memsize.c: Fix
    get_effective_memsize() to check for overflow") for non-mpc85xx platforms.

    The changes to this generic function, which is intended to help with
    32bit platforms with large amounts of memory has unintended side effects
    (which in turn lead to boot failures) on other platforms which were
    previously functional.

    For now do overflow check only for powerpc mpc85xx platform. It is needed
    to prevent crashing of P1/P2 boards with 4GB DDR module in 32-bit mode.

    Fixes: 777aaaa706bc ("common/memsize.c: Fix
get_effective_memsize() to check for overflow")
    Signed-off-by: Pali Rohár <pali at kernel.org>

Can this patch be discarded then?

I just noticed that Stefano applied it to u-boot-imx master-next branch.