[edk2-devel] [PATCH v2] MinPlatformPkg/PciHostBridgeLibSimple: Fix Mem.Limit assignment

[Nate DeSimone]

Reviewed-by: Nate DeSimone <nathaniel.l.desimone at intel.com>

> -----Original Message-----
> From: devel at edk2.groups.io <devel at edk2.groups.io> On Behalf Of
> Benjamin Doron
> Sent: Thursday, July 22, 2021 7:27 PM
> To: devel at edk2.groups.io
> Cc: Chiu, Chasel <chasel.chiu at intel.com>; Desimone, Nathaniel L
> <nathaniel.l.desimone at intel.com>; Liming Gao
> <gaoliming at byosoft.com.cn>; Dong, Eric <eric.dong at intel.com>
> Subject: [edk2-devel] [PATCH v2] MinPlatformPkg/PciHostBridgeLibSimple:
> Fix Mem.Limit assignment
> 
> In the case where the root bridge's Mem.Limit is the base address of PCIe
> MMIO, subtract one to make a valid end address.
> 
> This fixes an issue where CpuDxe returns "Length(0x50000001) is not
> aligned!" when PciHostBridgeDxe attempts to make this range uncacheable.
> 
> Cc: Chasel Chiu <chasel.chiu at intel.com>
> Cc: Nate DeSimone <nathaniel.l.desimone at intel.com>
> Cc: Liming Gao <gaoliming at byosoft.com.cn>
> Cc: Eric Dong <eric.dong at intel.com>
> Signed-off-by: Benjamin Doron <benjamin.doron00 at gmail.com>
> ---
> 
> Platform/Intel/MinPlatformPkg/Pci/Library/PciHostBridgeLibSimple/PciHostB
> ridgeLibSimple.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git
> a/Platform/Intel/MinPlatformPkg/Pci/Library/PciHostBridgeLibSimple/PciHos
> tBridgeLibSimple.c
> b/Platform/Intel/MinPlatformPkg/Pci/Library/PciHostBridgeLibSimple/PciHos
> tBridgeLibSimple.c
> index e231f747019e..0e3fee28b5d1 100644
> ---
> a/Platform/Intel/MinPlatformPkg/Pci/Library/PciHostBridgeLibSimple/PciHos
> tBridgeLibSimple.c
> +++ b/Platform/Intel/MinPlatformPkg/Pci/Library/PciHostBridgeLibSimple/P
> +++ ciHostBridgeLibSimple.c
> @@ -90,7 +90,7 @@ PciHostBridgeGetRootBridges (
>    if (PcdGet32(PcdPciReservedMemLimit) != 0) {
> mRootBridgeTemplate.Mem.Limit = PcdGet32 (PcdPciReservedMemLimit);
> } else {-    mRootBridgeTemplate.Mem.Limit = (UINT32) PcdGet64
> (PcdPciExpressBaseAddress);+    mRootBridgeTemplate.Mem.Limit =
> (UINT32) PcdGet64 (PcdPciExpressBaseAddress) - 1;   }
> mRootBridgeTemplate.MemAbove4G.Base = PcdGet64
> (PcdPciReservedMemAbove4GBBase);--
> 2.31.1
> 
> 
> 
> -=-=-=-=-=-=
> Groups.io Links: You receive all messages sent to this group.
> View/Reply Online (#78112): https://edk2.groups.io/g/devel/message/78112
> Mute This Topic: https://groups.io/mt/84393639/1767664
> Group Owner: devel+owner at edk2.groups.io
> Unsubscribe: https://edk2.groups.io/g/devel/unsub
> [nathaniel.l.desimone at intel.com] -=-=-=-=-=-=
> 



-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#78318): https://edk2.groups.io/g/devel/message/78318
Mute This Topic: https://groups.io/mt/84393639/1813853
Group Owner: devel+owner at edk2.groups.io
Unsubscribe: https://edk2.groups.io/g/devel/unsub [edk2-devel-archive at redhat.com]
-=-=-=-=-=-=-=-=-=-=-=-