Mailing List Archive

# HG changeset patch
# User Paul Durrant <paul.durrant@citrix.com>
# Date 1322482488 0
# Node ID 346b54217c4c3fcdebfde41d636d0ec1c11a7672
# Parent a9c67c2daf4b0181ef2581471ea920eecb495616
Add an ACPI device exposing a package called ADDR, evaluating to two
integers, and with _CID and _DDN set to "VM_Gen_Counter".

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>

diff -r a9c67c2daf4b -r 346b54217c4c tools/firmware/hvmloader/acpi/build.c
--- a/tools/firmware/hvmloader/acpi/build.c Mon Nov 28 11:57:23 2011 +0000
+++ b/tools/firmware/hvmloader/acpi/build.c Mon Nov 28 12:14:48 2011 +0000
@@ -47,6 +47,7 @@ struct acpi_info {
uint32_t pci_min, pci_len; /* 4, 8 - PCI I/O hole boundaries */
uint32_t madt_csum_addr; /* 12 - Address of MADT checksum */
uint32_t madt_lapic0_addr; /* 16 - Address of first MADT LAPIC struct */
+ uint32_t vm_gid_addr; /* 20 - Address of VM generation id buffer */
};

/* Number of processor objects in the chosen DSDT. */
diff -r a9c67c2daf4b -r 346b54217c4c tools/firmware/hvmloader/acpi/dsdt.asl
--- a/tools/firmware/hvmloader/acpi/dsdt.asl Mon Nov 28 11:57:23 2011 +0000
+++ b/tools/firmware/hvmloader/acpi/dsdt.asl Mon Nov 28 12:14:48 2011 +0000
@@ -55,7 +55,8 @@ DefinitionBlock ("DSDT.aml", "DSDT", 2,
PMIN, 32,
PLEN, 32,
MSUA, 32, /* MADT checksum address */
- MAPA, 32 /* MADT LAPIC0 address */
+ MAPA, 32, /* MADT LAPIC0 address */
+ VGIA, 32 /* VM generation id address */
}

/* Fix HCT test for 0x400 pci memory:
@@ -396,6 +397,31 @@ DefinitionBlock ("DSDT.aml", "DSDT", 2,
IRQNoFlags () {7}
})
}
+
+ Device(VGID) {
+ Name(_HID, "ACPI0001")
+ Name(_UID, 0x00)
+ Name(_CID, "VM_Gen_Counter")
+ Name(_DDN, "VM_Gen_Counter")
+ Method(_STA, 0, NotSerialized)
+ {
+ If(LEqual(\_SB.VGIA, 0x00000000)) {
+ Return(0x00)
+ } Else {
+ Return(0x0F)
+ }
+ }
+ Name(PKG, Package ()
+ {
+ 0x00000000,
+ 0x00000000
+ })
+ Method(ADDR, 0, NotSerialized)
+ {
+ Store(\_SB.VGIA, Index(PKG, 0))
+ Return(PKG)
+ }
+ }
}
}
}

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