diff options
| author | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-12-17 02:13:14 +0000 |
|---|---|---|
| committer | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-12-17 02:13:14 +0000 |
| commit | 14430c55c8d0e9a8487c2c74155e63299632ef5e (patch) | |
| tree | 5c687c958e4677faf7353e32b4dc3ee78cb3bf26 /OvmfPkg/AcpiTables | |
| parent | fb8a1b44a8ae6b6fb600b8ab50ccce631d873971 (diff) | |
| download | edk2-platforms-14430c55c8d0e9a8487c2c74155e63299632ef5e.tar.xz | |
OvmfPkg: create \_S3 and \_S4 packages dynamically
Move these states from the DSDT to the SSDT. Override the default
configuration if the host has the following qemu commit:
commit 459ae5ea5ad682c2b3220beb244d4102c1a4e332
Author: Gleb Natapov <gleb@redhat.com>
Date: Mon Jun 4 14:31:55 2012 +0300
Add PIIX4 properties to control PM system states.
This patch adds two things. First it allows QEMU to distinguish
between regular powerdown and S4 powerdown. Later separate QMP
notification will be added for S4 powerdown. Second it allows
S3/S4 states to be disabled from QEMU command line. Some guests
known to be broken with regards to power management, but allow to
use it anyway. Using new properties management will be able to
disable S3/S4 for such guests.
Supported system state are passed to a firmware using new fw_cfg
file. The file contains 6 byte array. Each byte represents one
system state. If byte at offset X has its MSB set it means that
system state X is supported and to enter it guest should use the
value from lowest 3 bits.
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14003 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'OvmfPkg/AcpiTables')
| -rw-r--r-- | OvmfPkg/AcpiTables/Dsdt.asl | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/OvmfPkg/AcpiTables/Dsdt.asl b/OvmfPkg/AcpiTables/Dsdt.asl index 326942dd44..12a4f142af 100644 --- a/OvmfPkg/AcpiTables/Dsdt.asl +++ b/OvmfPkg/AcpiTables/Dsdt.asl @@ -16,9 +16,10 @@ DefinitionBlock ("Dsdt.aml", "DSDT", 1, "INTEL ", "OVMF ", 4) { //
// System Sleep States
//
+ // We build S3 and S4 with GetSuspendStates() in
+ // "OvmfPkg/AcpiPlatformDxe/Qemu.c".
+ //
Name (\_S0, Package () {5, 0, 0, 0}) // Working
- Name (\_S3, Package () {1, 0, 0, 0}) // Suspend to Ram (PIIX4: STR)
- Name (\_S4, Package () {2, 0, 0, 0}) // Suspend to Disk (PIIX4: POSCL)
Name (\_S5, Package () {0, 0, 0, 0}) // Soft Off
//
|