From 11e66a15a084cb0820dba13f4ea3b15b0512fd39 Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Wed, 6 May 2015 10:58:30 +0200 Subject: ich9: implement SMI_LOCK Add write mask for the smi enable register, so we can disable write access to certain bits. Open all bits on reset. Disable write access to GBL_SMI_EN when SMI_LOCK (in ich9 lpc pci config space) is set. Write access to SMI_LOCK itself is disabled too. Signed-off-by: Gerd Hoffmann Acked-by: Michael S. Tsirkin Signed-off-by: Paolo Bonzini --- include/hw/acpi/ich9.h | 1 + include/hw/i386/ich9.h | 6 ++++++ 2 files changed, 7 insertions(+) (limited to 'include/hw') diff --git a/include/hw/acpi/ich9.h b/include/hw/acpi/ich9.h index c2d3dba0c7..77cc65cbc2 100644 --- a/include/hw/acpi/ich9.h +++ b/include/hw/acpi/ich9.h @@ -39,6 +39,7 @@ typedef struct ICH9LPCPMRegs { MemoryRegion io_smi; uint32_t smi_en; + uint32_t smi_en_wmask; uint32_t smi_sts; qemu_irq irq; /* SCI */ diff --git a/include/hw/i386/ich9.h b/include/hw/i386/ich9.h index f4e522cc1f..a2cc15c915 100644 --- a/include/hw/i386/ich9.h +++ b/include/hw/i386/ich9.h @@ -152,6 +152,12 @@ Object *ich9_lpc_find(void); #define ICH9_LPC_PIRQ_ROUT_MASK Q35_MASK(8, 3, 0) #define ICH9_LPC_PIRQ_ROUT_DEFAULT 0x80 +#define ICH9_LPC_GEN_PMCON_1 0xa0 +#define ICH9_LPC_GEN_PMCON_1_SMI_LOCK (1 << 4) +#define ICH9_LPC_GEN_PMCON_2 0xa2 +#define ICH9_LPC_GEN_PMCON_3 0xa4 +#define ICH9_LPC_GEN_PMCON_LOCK 0xa6 + #define ICH9_LPC_RCBA 0xf0 #define ICH9_LPC_RCBA_BA_MASK Q35_MASK(32, 31, 14) #define ICH9_LPC_RCBA_EN 0x1 -- cgit v1.2.3