[PATCH v1] x86: tangier: Find proper memory region for relocation

[Simon Glass]

On Fri, 27 Nov 2020 at 05:40, Andy Shevchenko
<andriy.shevchenko at linux.intel.com> wrote:
>
> It appears that U-Boot works by luck on Intel Edison board because the amount
> of RAM is less than 1 GB and standard way of calculating the top of it work
> for this configuration. However, this won't work if the amount of RAM is
> different and split differently in address space. We have to fine the suitable
> window correctly.
>
> Find proper memory region for relocation by scanning MMAP SFI table in
> board_get_usable_ram_top() callback.
>
> According to the address map documentation the Main Memory is guaranteed to lie
> in the 0..2 GB range, that's why we limit search by this range.
>
> Fixes: e71de54a4943 ("x86: Add Intel Tangier support")
> Signed-off-by: Andy Shevchenko <andriy.shevchenko at linux.intel.com>
> ---
>  arch/x86/cpu/tangier/sdram.c | 43 ++++++++++++++++++++++++++++++++++++
>  1 file changed, 43 insertions(+)

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