[U-Boot] Most ARM CPU's have buggy clear_bss?

Wolfgang Denk
2010-10-29T14:44:48Z

Dear Alexander Holler,

In message <4CCADC10.9010205@ahsoftware.de> you wrote:
>
...
> U-Boot code: 00700000 -> 0075A210 BSS: -> 007A0300
> SoC: Kirkwood 88F6281_A0
> monitor len: 000A0300
> ramsize: 08000000

That's 128 MB...

> TLB table at: 07ff0000
> Top of RAM usable for U-Boot at: 07ff0000
> Reserving 640k for U-Boot at: 07f4f000
> Reserving 1152k for malloc() at: 07e2f000
> Reserving 48 Bytes for Board Info at: 07e2efd0
> Reserving 92 Bytes for Global Data at: 07e2ef74
> New Stack Pointer is: 07e2ef70
> RAM Configuration:
> Bank #0: 00000000 128 MiB
> Bank #1: 00000000 0 Bytes

These look OK.

> Bank #2: e7dfe27e 4 GiB
> Bank #3: 7fdbe1ce 2.7 GiB

But this is obviously garbage. And the printed sizes are garbage,
too.

Where is this coming from?

> Bank #0: 00000000 128 MiB
> Bank #1: 00000000 0 Bytes
> Bank #2: 0197f8ff 3.3 GiB
> Bank #3: 0f0c0cab 3.5 GiB

It seems you cannot even print sane numbers.

Did you verify that your inital stack is properly aligned?

Best regards,

Wolfgang Denk

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