[edk2-devel] [PATCH 2/2] Platform/RaspberryPi: Increase genet dma window

Samer El-Haj-Mahmoud samer.el-haj-mahmoud at arm.com
Fri Apr 30 18:15:06 UTC 2021


+Jared

Reviewed-By: Samer El-Haj-Mahmoud <Samer.El-Haj-Mahmoud at arm.com>

> -----Original Message-----
> From: Jeremy Linton <jeremy.linton at arm.com>
> Sent: Thursday, April 15, 2021 3:22 PM
> To: devel at edk2.groups.io
> Cc: Ard Biesheuvel <Ard.Biesheuvel at arm.com>; leif at nuviainc.com;
> pete at akeo.ie; Samer El-Haj-Mahmoud <Samer.El-Haj-
> Mahmoud at arm.com>; Andrei Warkentin (awarkentin at vmware.com)
> <awarkentin at vmware.com>; Jeremy Linton <Jeremy.Linton at arm.com>
> Subject: [PATCH 2/2] Platform/RaspberryPi: Increase genet dma window
>
> The genet is capable of addressing the entire memory space on the RPI4.
> Lets allow it to dma into those regions.
> This solves intermittent issues with grub/etc being able to communicate
> when the 3G limit is lifted on 8G boards.
>
> Signed-off-by: Jeremy Linton <jeremy.linton at arm.com>
> ---
>  Platform/RaspberryPi/RPi4/RPi4.dsc | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/Platform/RaspberryPi/RPi4/RPi4.dsc
> b/Platform/RaspberryPi/RPi4/RPi4.dsc
> index ddf4dd6a41..facf34f034 100644
> --- a/Platform/RaspberryPi/RPi4/RPi4.dsc
> +++ b/Platform/RaspberryPi/RPi4/RPi4.dsc
> @@ -698,7 +698,7 @@
>    Silicon/Broadcom/Drivers/Net/BcmGenetDxe/BcmGenetDxe.inf {
>      <PcdsFixedAtBuild>
>        gEmbeddedTokenSpaceGuid.PcdDmaDeviceOffset|0x00000000
> -      gEmbeddedTokenSpaceGuid.PcdDmaDeviceLimit|0xffffffff
> +      gEmbeddedTokenSpaceGuid.PcdDmaDeviceLimit|0xffffffffff
>    }
>
>    #
> --
> 2.13.7

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