Are lucky because I actually pushed the PCI Root Complex source code for ARM
Juno development board R1 (Revision 1) yesterday in EDK2.
You should be able to find the code under
ArmPlatformPkg/ArmJunoPkg/Drivers/PciHostBridgeDxe
I am guessing what you name 'ATU' is the logic to translate AXI bus <-> PCI
bus. As far as I have seen so far, this logic is vendor specific.
You can see this initialization of the translation block for this PCI Root
Complex in this file:
ArmPlatformPkg/ArmJunoPkg/Drivers/PciHostBridgeDxe/XPressRich3.c
From: Leekha Shaveta [mailto:shav...@freescale.com]
Sent: 13 May 2015 13:09
To: edk2-devel@lists.sourceforge.net
Subject: [edk2] Query UEFI : PCIE Driver for Armv8 platform
Hi,
I was looking for PCIE driver/Root Bridge implementation for ARMv8 kind of
platforms and have referred some code in files:
* ArmPlatformPkg/ArmVirtualizationPkg/PciHostBridgeDxe/PciRootBridgeIo.c
* ArmPlatformPkg/ArmVirtualizationPkg/PciHostBridgeDxe/PciHostBridge.c
But I couldn't see ATU programming code in this implementation, AFAIK ATU
programming is required for any outbound and inbound transaction of PCI.
How the IO translation is being done in this?
Also what is the context of "aperture" used in this code?
Kindly help in clearing these doubts.
Regards,
Shaveta
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