[Qemu-devel] [PATCH v4 00/20] Generate ACPI v5.1 tables and expose it to guest over fw_cfg on ARM

[Shannon Zhao]

From: Shannon Zhao <address@hidden>

This patch series generate six ACPI v5.1 tables for machine virt on ARM.
The set of generated tables are:
- RSDP
- RSDT
- MADT
- GTDT
- FADT
- DSDT
- MCFG (For PCIe host bridge)

These tables are created dynamically using the function of aml-build.c,
taking into account the needed information passed from the virt machine model.
When the generation is finalized, it use fw_cfg to expose the tables to guest.

You can fetch this from following repo:
        http://git.linaro.org/people/shannon.zhao/qemu.git  ACPI_ARM_v4

And this patchset refers to Alexander Spyridakis's patches which are sent to
qemu-devel mailing list before.
        http://lists.gnu.org/archive/html/qemu-devel/2014-10/msg03987.html

Thanks to Laszlo's work on UEFI (ArmVirtualizationQemu) supporting downloading
ACPI tables over fw_cfg, we now can use ACPI in VM. I have done following vm
startup test:

xp, windows2008, sles11 on X86
Fedora Linux kernel on ARM64

Note:
As upstream kernel doesn't support ACPI PCI host bridge on ARM64, so I use the
Fedora Linux kernel from following address:
        https://git.fedorahosted.org/cgit/kernel-arm64.git/log/?h=devel
But maybe this has a bug which cause unsuccessfully initializing BAR, therefore
virtio-pci can't work. I apply the following patch and the virtio-pci, e1000
work well.

diff --git a/arch/arm64/kernel/pci.c b/arch/arm64/kernel/pci.c
index 8456e72..32f8869 100644
--- a/arch/arm64/kernel/pci.c
+++ b/arch/arm64/kernel/pci.c
@@ -240,7 +240,7 @@ static acpi_status setup_resource(struct acpi_resource 
*acpi_res, void *data)
                if (pci_remap_iospace(res, start) < 0)
                        return AE_OK;

-               info->res_offset[info->res_num] = port - addr.address.minimum;
+               info->res_offset[info->res_num] = port;
        } else
                info->res_offset[info->res_num] = 
addr.address.translation_offset;

changes since v3:
  * rebase on upstream qemu
  * fix _HID of CPU (Heyi Guo)
  * Add PCIe host bridge
  
changes since v2:
  * rebase on Igor Mammedov's new branch ASL_API_v3
  * use rsdt instead of xsdt according to Igor Mammedov's suggestion

changes since v1:
  * fix bug found by Laszlo
  * move common helpers into dedictated file and change generating
    table order according to Igor's comments
  * fix copyright and function name according to Michael's comments


Shannon Zhao (20):
  hw/i386: Move ACPI header definitions in an arch-independent location
  hw/i386/acpi-build: move generic acpi building helpers into dedictated
    file
  hw/arm/virt-acpi-build: Basic framework for building ACPI tables on
    ARM
  hw/acpi/aml-build: Add aml_memory32_fixed() term
  hw/acpi/aml-build: Add aml_interrupt() term
  hw/arm/virt-acpi-build: Generation of DSDT table for virt devices
  hw/arm/virt-acpi-build: Generate FADT table and update ACPI headers
  hw/arm/virt-acpi-build: Generate MADT table
  hw/arm/virt-acpi-build: Generate GTDT table
  hw/arm/virt-acpi-build: Generate RSDT table
  hw/arm/virt-acpi-build: Generate RSDP table
  hw/arm/virt-acpi-build: Add PCIe info and generate MCFG table
  hw/acpi/aml-build: Add ToUUID macro
  hw/acpi/aml-build: Add aml_or() term
  hw/acpi/aml-build: Add aml_not() term
  hw/acpi/aml-build: Add aml_else() term
  hw/acpi/aml-build: Add aml_create_dword_field() term
  hw/acpi/aml-build: Add aml_dword_io() term
  hw/arm/virt-acpi-build: Add PCIe controller in ACPI DSDT table
  hw/arm/virt: Enable dynamic generation of ACPI v5.1 tables

 default-configs/arm-softmmu.mak      |   1 +
 default-configs/i386-softmmu.mak     |   3 +
 default-configs/mips-softmmu.mak     |   3 +
 default-configs/mips64-softmmu.mak   |   3 +
 default-configs/mips64el-softmmu.mak |   3 +
 default-configs/mipsel-softmmu.mak   |   3 +
 default-configs/x86_64-softmmu.mak   |   3 +
 hw/acpi/Makefile.objs                |   5 +-
 hw/acpi/aml-build.c                  | 189 +++++++++-
 hw/arm/Makefile.objs                 |   1 +
 hw/arm/virt-acpi-build.c             | 678 +++++++++++++++++++++++++++++++++++
 hw/arm/virt.c                        |  78 +++-
 hw/i2c/Makefile.objs                 |   2 +-
 hw/i386/acpi-build.c                 |  81 +----
 hw/i386/acpi-defs.h                  | 368 -------------------
 include/hw/acpi/acpi-defs.h          | 479 +++++++++++++++++++++++++
 include/hw/acpi/aml-build.h          |  45 ++-
 include/hw/arm/virt-acpi-build.h     |  79 ++++
 tests/bios-tables-test.c             |   2 +-
 19 files changed, 1564 insertions(+), 462 deletions(-)
 create mode 100644 hw/arm/virt-acpi-build.c
 delete mode 100644 hw/i386/acpi-defs.h
 create mode 100644 include/hw/acpi/acpi-defs.h
 create mode 100644 include/hw/arm/virt-acpi-build.h

-- 
2.0.4