It's neccessary to allocate a Graphics Stolen Memory area to enable
GPU-Passthrough for integrated Intel GPUs. Therefore, use a new
memory layout with a static Pci32Baseaddress.
Old layout:
[... , lowmemlimit] RAM
[lowmemlimit, 0xE000 0000] PCI Space
New layout:
[... , lowmemlimit] RAM
[lowmemlimit, gsmbase ] Memory hole (may be absent)
[gsmbase , 0xC000 0000] GSM (may be absent)
[0xC000 0000, 0xE000 0000] PCI Space
Reviewed-by: Peter Grehan <gre...@freebsd.org>
Acked-by: Rebecca Cran <rebe...@bsdio.com>
Signed-off-by: Corvin Köhne <c.koe...@beckhoff.com>
---
OvmfPkg/Bhyve/BhyveX64.dsc | 4 ++--
OvmfPkg/Bhyve/PlatformPei/Platform.c | 4 +++-
2 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/OvmfPkg/Bhyve/BhyveX64.dsc b/OvmfPkg/Bhyve/BhyveX64.dsc
index a0a2071b86..c435dadc0a 100644
--- a/OvmfPkg/Bhyve/BhyveX64.dsc
+++ b/OvmfPkg/Bhyve/BhyveX64.dsc
@@ -537,8 +537,8 @@
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfHostBridgePciDevId|0
gUefiOvmfPkgTokenSpaceGuid.PcdPciIoBase|0x0
gUefiOvmfPkgTokenSpaceGuid.PcdPciIoSize|0x0
- gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio32Base|0x0
- gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio32Size|0x0
+ gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio32Base|0xC0000000
+ gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio32Size|0x20000000
gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio64Base|0x0
gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio64Size|0x800000000
diff --git a/OvmfPkg/Bhyve/PlatformPei/Platform.c
b/OvmfPkg/Bhyve/PlatformPei/Platform.c
index 3a414ffcb7..d980e3fcb0 100644
--- a/OvmfPkg/Bhyve/PlatformPei/Platform.c
+++ b/OvmfPkg/Bhyve/PlatformPei/Platform.c
@@ -191,7 +191,9 @@ MemMapInitialization (
ASSERT (PciExBarBase <= MAX_UINT32 - SIZE_256MB);
PciBase = (UINT32)(PciExBarBase + SIZE_256MB);
} else {
- PciBase = (TopOfLowRam < BASE_2GB) ? BASE_2GB : TopOfLowRam;
+ PciBase = PcdGet64 (PcdPciMmio32Base);
+ if (PciBase == 0)
+ PciBase = (TopOfLowRam < BASE_2GB) ? BASE_2GB : TopOfLowRam;
}
//
--
2.11.0
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