diff options
Diffstat (limited to 'hw/acpi.c')
| -rw-r--r-- | hw/acpi.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/hw/acpi.c b/hw/acpi.c index 66a5faa0fd..dd9100aa4b 100644 --- a/hw/acpi.c +++ b/hw/acpi.c @@ -53,6 +53,8 @@ typedef struct PIIX4PMState { qemu_irq irq; } PIIX4PMState; +#define RSM_STS (1 << 15) +#define PWRBTN_STS (1 << 8) #define RTC_EN (1 << 10) #define PWRBTN_EN (1 << 8) #define GBL_EN (1 << 5) @@ -151,6 +153,14 @@ static void pm_ioport_writew(void *opaque, uint32_t addr, uint32_t val) case 0: /* soft power off */ qemu_system_shutdown_request(); break; + case 1: + /* RSM_STS should be set on resume. Pretend that resume + was caused by power button */ + s->pmsts |= (RSM_STS | PWRBTN_STS); + qemu_system_reset_request(); +#if defined(TARGET_I386) + cmos_set_s3_resume(); +#endif default: break; } @@ -471,6 +481,17 @@ static int pm_load(QEMUFile* f,void* opaque,int version_id) return 0; } +static void piix4_reset(void *opaque) +{ + PIIX4PMState *s = opaque; + uint8_t *pci_conf = s->dev.config; + + pci_conf[0x58] = 0; + pci_conf[0x59] = 0; + pci_conf[0x5a] = 0; + pci_conf[0x5b] = 0; +} + i2c_bus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base, qemu_irq sci_irq) { @@ -527,6 +548,8 @@ i2c_bus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base, s->smbus = i2c_init_bus(); s->irq = sci_irq; + qemu_register_reset(piix4_reset, s); + return s->smbus; } |