diff options
| author | Gabriel Somlo <somlo@cmu.edu> | 2014-11-14 00:37:16 +0000 |
|---|---|---|
| committer | jljusten <jljusten@Edk2> | 2014-11-14 00:37:16 +0000 |
| commit | 4e48c72c4cbbd24be3ec9835a7a428dce8064567 (patch) | |
| tree | 40e3db4760e9b58d385fefbd2ade26f085760957 /OvmfPkg | |
| parent | 4a50c2728540b9c487c9eccf19548f5322851212 (diff) | |
| download | edk2-platforms-4e48c72c4cbbd24be3ec9835a7a428dce8064567.tar.xz | |
OvmfPkg: Factor out platform detection (q35 vs. piix4)
Introduce macros to detect the underlying platform and access its
ACPI power management registers, based on querying the host bridge
device ID.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Gabriel Somlo <somlo@cmu.edu>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16372 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'OvmfPkg')
| -rw-r--r-- | OvmfPkg/Include/OvmfPlatforms.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/OvmfPkg/Include/OvmfPlatforms.h b/OvmfPkg/Include/OvmfPlatforms.h new file mode 100644 index 0000000000..cf6e62435c --- /dev/null +++ b/OvmfPkg/Include/OvmfPlatforms.h @@ -0,0 +1,49 @@ +/** @file
+ OVMF Platform definitions
+
+ Copyright (c) 2014, Gabriel L. Somlo <somlo@cmu.edu>
+
+ This program and the accompanying materials are licensed and made
+ available under the terms and conditions of the BSD License which
+ accompanies this distribution. The full text of the license may
+ be found at http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+**/
+
+#ifndef __OVMF_PLATFORMS_H__
+#define __OVMF_PLATFORMS_H__
+
+#include <Library/PciLib.h>
+#include <IndustryStandard/Pci22.h>
+
+//
+// Host Bridge Device ID (DID) values for PIIX4 and Q35/MCH
+//
+#define INTEL_82441_DEVICE_ID 0x1237 // PIIX4
+#define INTEL_Q35_MCH_DEVICE_ID 0x29C0 // Q35
+
+//
+// OVMF Host Bridge DID Address
+//
+#define OVMF_HOSTBRIDGE_DID \
+ PCI_LIB_ADDRESS (0, 0, 0, PCI_DEVICE_ID_OFFSET)
+
+//
+// Power Management Device and Function numbers for PIIX4 and Q35/MCH
+//
+#define OVMF_PM_DEVICE_PIIX4 0x01
+#define OVMF_PM_FUNC_PIIX4 0x03
+#define OVMF_PM_DEVICE_Q35 0x1f
+#define OVMF_PM_FUNC_Q35 0x00
+
+//
+// Power Management Register access for PIIX4 and Q35/MCH
+//
+#define POWER_MGMT_REGISTER_PIIX4(Offset) \
+ PCI_LIB_ADDRESS (0, OVMF_PM_DEVICE_PIIX4, OVMF_PM_FUNC_PIIX4, (Offset))
+#define POWER_MGMT_REGISTER_Q35(Offset) \
+ PCI_LIB_ADDRESS (0, OVMF_PM_DEVICE_Q35, OVMF_PM_FUNC_Q35, (Offset))
+
+#endif
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