Re: [PATCH] ARM: boot: Fix ATAGs with appended DTB

Hi Russell,

On Wed, Feb 26, 2020 at 6:49 PM Russell King - ARM Linux admin
[off-list ref] wrote:

On Wed, Feb 26, 2020 at 07:35:14AM +0100, Marek Szyprowski wrote:

quoted

On 25.02.2020 15:47, Geert Uytterhoeven wrote:

quoted

At early boot, register r8 may contain an ATAGs or DTB pointer.
When an appended DTB is found, its address is stored in r8, for
extraction of the RAM base address later.

However, if r8 contained an ATAGs pointer before, that pointer will be
lost, and the provided ATAGs is no longer folded into the provided DTB.

Fix this by leaving r8 untouched.

Fixes: 137e522593918be2 ("ARM: 8960/1: boot: Obtain start of physical memory from DTB")
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

The original commit hasn't been submitted, so it can be fixed before it
hits mainline if you want.  Let me know what you want to do.  Thanks.

Fixing the original is fine for me, of course.
Thanks!

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

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