Hi,
Per Avi's request, here's a patch which moves the current _PR section
from the DSDT table into a new SSDT table.
The long term idea is to be able to have multiple different SSDTs for
different sized systems, and in particular allow to keep the legacy one
for supporting legacy operating systems which cannot handle more then 15
vcpus.
Cheers,
Jes
Move _PR block from the DSDT to a new SSDT in the KVM BIOS.
This will make it possible to plug in different SSDTs with different
processor counts in the future.
Signed-off-by: Jes Sorensen <jes@xxxxxxx>
---
kvm/bios/Makefile | 10 ++-
kvm/bios/acpi-dsdt.dsl | 115 ----------------------------------------
kvm/bios/acpi-ssdt.dsl | 140 +++++++++++++++++++++++++++++++++++++++++++++++++
kvm/bios/rombios32.c | 16 ++++-
4 files changed, 162 insertions(+), 119 deletions(-)
Index: qemu-kvm/kvm/bios/Makefile
===================================================================
--- qemu-kvm.orig/kvm/bios/Makefile
+++ qemu-kvm/kvm/bios/Makefile
@@ -108,13 +108,19 @@ rombios32.bin: rombios32.out rombios.h
rombios32.out: rombios32start.o rombios32.o vapic.o rombios32.ld
ld -o $@ -T rombios32.ld rombios32start.o vapic.o rombios32.o
-rombios32.o: rombios32.c acpi-dsdt.hex
+rombios32.o: rombios32.c acpi-dsdt.hex acpi-ssdt.hex
$(GCC) -m32 -O2 -Wall -c -o $@ $<
acpi-dsdt.hex: acpi-dsdt.dsl
cpp -P $< $<.i
iasl -tc -p $@ $<.i
- sed -i -e's/^unsigned/const unsigned/' $@
+ sed -i -e's/^unsigned char AmlCode/const unsigned char DSDTCode/' $@
+ rm $<.i
+
+acpi-ssdt.hex: acpi-ssdt.dsl
+ cpp -P $< $<.i
+ iasl -tc -p $@ $<.i
+ sed -i -e's/^unsigned char AmlCode/const unsigned char SSDTCode/' $@
rm $<.i
rombios32start.o: rombios32start.S
Index: qemu-kvm/kvm/bios/acpi-dsdt.dsl
===================================================================
--- qemu-kvm.orig/kvm/bios/acpi-dsdt.dsl
+++ qemu-kvm/kvm/bios/acpi-dsdt.dsl
@@ -25,119 +25,6 @@ DefinitionBlock (
0x1 // OEM Revision
)
{
- Scope (\_PR)
- {
- /* pointer to first element of MADT APIC structures */
- OperationRegion(ATPR, SystemMemory, 0x0514, 4)
- Field (ATPR, DwordAcc, NoLock, Preserve)
- {
- ATP, 32
- }
-
-#define madt_addr(nr) Add (ATP, Multiply(nr, 8))
-
-#define gen_processor(nr, name) \
- Processor (CPU##name, nr, 0x0000b010, 0x06) { \
- OperationRegion (MATR, SystemMemory, madt_addr(nr), 8) \
- Field (MATR, ByteAcc, NoLock, Preserve) \
- { \
- MAT, 64 \
- } \
- Field (MATR, ByteAcc, NoLock, Preserve) \
- { \
- Offset(4), \
- FLG, 1 \
- } \
- Method(_MAT, 0) { \
- Return(MAT) \
- } \
- Method (_STA) { \
- If (FLG) { Return(0xF) } Else { Return(0x9) } \
- } \
- } \
-
-
- gen_processor(0, 0)
- gen_processor(1, 1)
- gen_processor(2, 2)
- gen_processor(3, 3)
- gen_processor(4, 4)
- gen_processor(5, 5)
- gen_processor(6, 6)
- gen_processor(7, 7)
- gen_processor(8, 8)
- gen_processor(9, 9)
- gen_processor(10, A)
- gen_processor(11, B)
- gen_processor(12, C)
- gen_processor(13, D)
- gen_processor(14, E)
-
- Method (NTFY, 2) {
-#define gen_ntfy(nr) \
- If (LEqual(Arg0, 0x##nr)) { \
- If (LNotEqual(Arg1, \_PR.CPU##nr.FLG)) { \
- Store (Arg1, \_PR.CPU##nr.FLG) \
- If (LEqual(Arg1, 1)) { \
- Notify(CPU##nr, 1) \
- } Else { \
- Notify(CPU##nr, 3) \
- } \
- } \
- }
- gen_ntfy(0)
- gen_ntfy(1)
- gen_ntfy(2)
- gen_ntfy(3)
- gen_ntfy(4)
- gen_ntfy(5)
- gen_ntfy(6)
- gen_ntfy(7)
- gen_ntfy(8)
- gen_ntfy(9)
- gen_ntfy(A)
- gen_ntfy(B)
- gen_ntfy(C)
- gen_ntfy(D)
- gen_ntfy(E)
- Return(One)
- }
-
- OperationRegion(PRST, SystemIO, 0xaf00, 32)
- Field (PRST, ByteAcc, NoLock, Preserve)
- {
- PRS, 256
- }
-
- Method(PRSC, 0) {
- Store(PRS, Local3)
- Store(Zero, Local0)
- While(LLess(Local0, 32)) {
- Store(Zero, Local1)
- Store(DerefOf(Index(Local3, Local0)), Local2)
- While(LLess(Local1, 8)) {
- NTFY(Add(Multiply(Local0, 8), Local1),
- And(Local2, 1))
- ShiftRight(Local2, 1, Local2)
- Increment(Local1)
- }
- Increment(Local0)
- }
- Return(One)
- }
- }
-
- Scope (\)
- {
- /* Debug Output */
- OperationRegion (DBG, SystemIO, 0xb044, 0x04)
- Field (DBG, DWordAcc, NoLock, Preserve)
- {
- DBGL, 32,
- }
- }
-
-
/* PCI Bus definition */
Scope(\_SB) {
Device(PCI0) {
@@ -803,6 +690,8 @@ DefinitionBlock (
Return(0x01)
}
+ External(\_PR.PRSC, MethodObj, IntObj)
+
Method(_L02) {
Return(\_PR.PRSC())
}
Index: qemu-kvm/kvm/bios/acpi-ssdt.dsl
===================================================================
--- /dev/null
+++ qemu-kvm/kvm/bios/acpi-ssdt.dsl
@@ -0,0 +1,140 @@
+/*
+ * Bochs/QEMU ACPI SSDT ASL definition
+ *
+ * Copyright (c) 2006 Fabrice Bellard
+ * Copyright (c) 2009 SGI, Jes Sorensen <jes@xxxxxxx>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2 as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+DefinitionBlock (
+ "acpi-ssdt.aml", // Output Filename
+ "SSDT", // Signature
+ 0x01, // DSDT Compliance Revision
+ "BXPC", // OEMID
+ "BXSSDT", // TABLE ID
+ 0x1 // OEM Revision
+ )
+{
+ Scope (\_PR)
+ {
+ /* pointer to first element of MADT APIC structures */
+ OperationRegion(ATPR, SystemMemory, 0x0514, 4)
+ Field (ATPR, DwordAcc, NoLock, Preserve)
+ {
+ ATP, 32
+ }
+
+#define madt_addr(nr) Add (ATP, Multiply(nr, 8))
+
+#define gen_processor(nr, name) \
+ Processor (C##name, nr, 0x0000b010, 0x06) { \
+ OperationRegion (MATR, SystemMemory, madt_addr(nr), 8) \
+ Field (MATR, ByteAcc, NoLock, Preserve) \
+ { \
+ MAT, 64 \
+ } \
+ Field (MATR, ByteAcc, NoLock, Preserve) \
+ { \
+ Offset(4), \
+ FLG, 1 \
+ } \
+ Method(_MAT, 0) { \
+ Return(MAT) \
+ } \
+ Method (_STA) { \
+ If (FLG) { Return(0xF) } Else { Return(0x9) } \
+ } \
+ } \
+
+
+ gen_processor(0, 0)
+ gen_processor(1, 1)
+ gen_processor(2, 2)
+ gen_processor(3, 3)
+ gen_processor(4, 4)
+ gen_processor(5, 5)
+ gen_processor(6, 6)
+ gen_processor(7, 7)
+ gen_processor(8, 8)
+ gen_processor(9, 9)
+ gen_processor(10, A)
+ gen_processor(11, B)
+ gen_processor(12, C)
+ gen_processor(13, D)
+ gen_processor(14, E)
+
+ Method (NTFY, 2) {
+#define gen_ntfy(nr) \
+ If (LEqual(Arg0, 0x##nr)) { \
+ If (LNotEqual(Arg1, \_PR.C##nr.FLG)) { \
+ Store (Arg1, \_PR.C##nr.FLG) \
+ If (LEqual(Arg1, 1)) { \
+ Notify(C##nr, 1) \
+ } Else { \
+ Notify(C##nr, 3) \
+ } \
+ } \
+ }
+ gen_ntfy(0)
+ gen_ntfy(1)
+ gen_ntfy(2)
+ gen_ntfy(3)
+ gen_ntfy(4)
+ gen_ntfy(5)
+ gen_ntfy(6)
+ gen_ntfy(7)
+ gen_ntfy(8)
+ gen_ntfy(9)
+ gen_ntfy(A)
+ gen_ntfy(B)
+ gen_ntfy(C)
+ gen_ntfy(D)
+ gen_ntfy(E)
+ Return(One)
+ }
+
+ OperationRegion(PRST, SystemIO, 0xaf00, 32)
+ Field (PRST, ByteAcc, NoLock, Preserve)
+ {
+ PRS, 256
+ }
+
+ Method(PRSC, 0) {
+ Store(PRS, Local3)
+ Store(Zero, Local0)
+ While(LLess(Local0, 32)) {
+ Store(Zero, Local1)
+ Store(DerefOf(Index(Local3, Local0)), Local2)
+ While(LLess(Local1, 8)) {
+ NTFY(Add(Multiply(Local0, 8), Local1),
+ And(Local2, 1))
+ ShiftRight(Local2, 1, Local2)
+ Increment(Local1)
+ }
+ Increment(Local0)
+ }
+ Return(One)
+ }
+ }
+
+ Scope (\)
+ {
+ /* Debug Output */
+ OperationRegion (DBG, SystemIO, 0xb044, 0x04)
+ Field (DBG, DWordAcc, NoLock, Preserve)
+ {
+ DBGL, 32,
+ }
+ }
+}
Index: qemu-kvm/kvm/bios/rombios32.c
===================================================================
--- qemu-kvm.orig/kvm/bios/rombios32.c
+++ qemu-kvm/kvm/bios/rombios32.c
@@ -1526,6 +1526,7 @@ struct madt_int_override
#endif
#include "acpi-dsdt.hex"
+#include "acpi-ssdt.hex"
static inline uint16_t cpu_to_le16(uint16_t x)
{
@@ -1641,7 +1642,12 @@ void acpi_bios_init(void)
dsdt_addr = addr;
dsdt = (void *)(addr);
- addr += sizeof(AmlCode);
+ addr += sizeof(DSDTCode);
+
+ addr = (addr + 7) & ~7;
+ ssdt_addr = addr;
+ ssdt = (void *)(addr);
+ addr += sizeof(SSDTCode);
#ifdef BX_QEMU
qemu_cfg_select(QEMU_CFG_NUMA);
@@ -1727,7 +1733,10 @@ void acpi_bios_init(void)
BX_INFO("Firmware waking vector %p\n", &facs->firmware_waking_vector);
/* DSDT */
- memcpy(dsdt, AmlCode, sizeof(AmlCode));
+ memcpy(dsdt, DSDTCode, sizeof(DSDTCode));
+
+ /* SSDT */
+ memcpy(ssdt, SSDTCode, sizeof(SSDTCode));
/* MADT */
{
@@ -1884,8 +1893,7 @@ void acpi_bios_init(void)
/* RSDT */
rsdt->table_offset_entry[nb_rsdt_entries++] = cpu_to_le32(fadt_addr);
rsdt->table_offset_entry[nb_rsdt_entries++] = cpu_to_le32(madt_addr);
- /* kvm has no ssdt (processors are in dsdt) */
-// rsdt->table_offset_entry[nb_rsdt_entries++] = cpu_to_le32(ssdt_addr);
+ rsdt->table_offset_entry[nb_rsdt_entries++] = cpu_to_le32(ssdt_addr);
#ifdef BX_QEMU
/* No HPET (yet) */
// rsdt->table_offset_entry[nb_rsdt_entries++] = cpu_to_le32(hpet_addr);
