[REGRESSION] Out of memory error: unable to boot on imx8mp/imx8mm

[Sughosh Ganu]

On Tue, 17 Dec 2024 at 00:59, Francesco Dolcini <francesco at dolcini.it> wrote:
>
> On Tue, Dec 17, 2024 at 12:37:38AM +0530, Sughosh Ganu wrote:
> > On Tue, 17 Dec 2024 at 00:33, Francesco Dolcini <francesco at dolcini.it> wrote:
> > >
> > > Hello,
> > >
> > > On Mon, Dec 16, 2024 at 11:28:42AM -0300, João Paulo Gonçalves wrote:
> > > > Hi Sughosh,
> > > >
> > > > > Can you show the output of bdinfo. And also print the value of ram_top
> > > > > while booting the board.
> > > > >
> > > >
> > > > Below are ram_top and bdinfo:
> > >
> > > We briefly discussed this off list, what is likely happen is that our
> > > heap is after 0xFFFFFFFF, or said in a simpler way in the 64-bit address
> > > space, while ram top is at the 4GB boundary.
> > >
> > > The solution seems to either move the heap down or move ram top up.
> >
> > I am not sure I understand. Isn't the heap memory part of the U-Boot
> > image, meaning it will always be below the ram_top? How do you have
> > this configuration where the heap is above ram_top? Can you point me
> > to the code where the heap is getting set above ram_top.
>
> I just guessed this, I might be plain wrong. I assume some malloc is failing,
> maybe Joao can confirm.

Ah okay. If it is some efi allocation that is failing, then the
allocation is not being done from heap. One thing that can be tried is
to have ram_top at 0x1_0000_0000 instead of 0xFFFF_FFFF.

-sughosh

>
> Francesco
>