motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-07 17:53:56 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

Add PIIX4 properties to control PM system states.

Browse source 
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>
This commit is contained in:
Gleb Natapov 2012-06-04 14:31:55 +03:00 • committed by Anthony Liguori
parent dcff25f2cd
commit 459ae5ea5a
8 changed files with 32 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

4
hw/pc.h
View file

@ -106,7 +106,7 @@ void pc_register_ferr_irq(qemu_irq irq);
void pc_acpi_smi_interrupt(void *opaque, int irq, int level);
void pc_cpus_init(const char *cpu_model);
void pc_memory_init(MemoryRegion *system_memory,
void *pc_memory_init(MemoryRegion *system_memory,
const char *kernel_filename,
const char *kernel_cmdline,
const char *initrd_filename,
@ -142,7 +142,7 @@ int acpi_table_add(const char *table_desc);
i2c_bus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
qemu_irq sci_irq, qemu_irq smi_irq,
int kvm_enabled);
int kvm_enabled, void *fw_cfg);
void piix4_smbus_register_device(SMBusDevice *dev, uint8_t addr);
/* hpet.c */