Re: [PATCH 2/2] Platform/RaspberryPi: Increase genet dma window


Samer El-Haj-Mahmoud
 

+Jared

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

-----Original Message-----
From: Jeremy Linton <jeremy.linton@arm.com>
Sent: Thursday, April 15, 2021 3:22 PM
To: devel@edk2.groups.io
Cc: Ard Biesheuvel <Ard.Biesheuvel@arm.com>; leif@nuviainc.com;
pete@akeo.ie; Samer El-Haj-Mahmoud <Samer.El-Haj-
Mahmoud@arm.com>; Andrei Warkentin (awarkentin@vmware.com)
<awarkentin@vmware.com>; Jeremy Linton <Jeremy.Linton@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@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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