public inbox for devel@edk2.groups.io
 help / color / mirror / Atom feed
* [PATCH edk2-platforms fix bug] Hisilicon/D03/D05: Add AddressTranslationOffset support
@ 2017-09-29  3:20 Heyi Guo
  0 siblings, 0 replies; only message in thread
From: Heyi Guo @ 2017-09-29  3:20 UTC (permalink / raw)
  To: leif.lindholm, linaro-uefi, edk2-devel, graeme.gregory
  Cc: ard.biesheuvel, guoheyi, wanghuiqiang, huangming23, zhangjinsong2,
	mengfanrong, waip23, Yan Zhang, Heyi Guo

From: Yan Zhang <zhangyan81@huawei.com>

Assign valid value to AddressTranslationOffset to support
address translation between domains of CPU and PCIe, which
is need by GOP to enable frame buffer.

This patch fix the bug:
Kernel (4.12, without the vga driver) boot hang with kernel panic
while kernel accesses UEFI GOP frame buffer.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Yan Zhang <zhangyan81@huawei.com>
Signed-off-by: Ming Huang <huangming23@huawei.com>
Signed-off-by: Heyi Guo <heyi.guo@linaro.org>
---
 Silicon/Hisilicon/Drivers/PciHostBridgeDxe/PciRootBridgeIo.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Silicon/Hisilicon/Drivers/PciHostBridgeDxe/PciRootBridgeIo.c b/Silicon/Hisilicon/Drivers/PciHostBridgeDxe/PciRootBridgeIo.c
index b57bd51..55b80aa 100644
--- a/Silicon/Hisilicon/Drivers/PciHostBridgeDxe/PciRootBridgeIo.c
+++ b/Silicon/Hisilicon/Drivers/PciHostBridgeDxe/PciRootBridgeIo.c
@@ -2316,6 +2316,7 @@ RootBridgeIoConfiguration (
       }
       Configuration.SpaceDesp[Index].AddrRangeMax = Configuration.SpaceDesp[Index].AddrRangeMin + PrivateData->ResAllocNode[Index].Length - 1;
       Configuration.SpaceDesp[Index].AddrLen      = PrivateData->ResAllocNode[Index].Length;
+      Configuration.SpaceDesp[Index].AddrTranslationOffset = PrivateData->MemBase - PrivateData->PciRegionBase;
     }
   }
 
-- 
1.9.1



^ permalink raw reply related	[flat|nested] only message in thread

only message in thread, other threads:[~2017-09-29  3:24 UTC | newest]

Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2017-09-29  3:20 [PATCH edk2-platforms fix bug] Hisilicon/D03/D05: Add AddressTranslationOffset support Heyi Guo

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox