[PATCH 01/11] imx: implement get_effective_memsize

[Stefano Babic]

On 31.01.23 12:02, Fabio Estevam wrote:
> 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.


Yes, it is in test - I could let it out for the moment, waiting for 
Peng's answer.

Regards,
Stefano

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