Currently, the virt machine model generates Device Tree information dynamically based on the existing devices in the system. This patch series extends the same concept but for ACPI information instead. A total of seven tables have been
implemented in this patch series, which is the minimum for a basic ARM support.
The set of generated tables are:
- RSDP
- XSDT
- MADT
- GTDT
- FADT
- FACS
- DSDT
The tables are created in standalone buffers, taking into account the
needed information passed from the virt machine model. When the generation
is finalized, the individual buffers are compacted to a single ACPI binary
blob, where it is injected on the guest memory space in a fixed location.
The guest kernel can find the ACPI tables by providing to it the physical
address of the ACPI blob (e.g. acpi_rsdp=0x47000000 boot argument).
This series has been tested on the Foundation Model 0.8 build 5206 and
the Juno development board. For kernel and driver support it is based
on the "Introduce ACPI for ARM64 based on ACPI 5.1" and
"Drivers for Juno to boot from ACPI" patch series from Hanjun Guo.
Alexander Spyridakis (7):
hw/i386: Move ACPI header definitions in an arch-independent location
hw/arm/virt-acpi: Basic skeleton for dynamic generation of ACPI tables
hw/arm/virt-acpi: Generate RSDP and XSDT, add helper functions
hw/arm/virt-acpi: Generate FACS and FADT, update ACPI headers
hw/arm/virt-acpi: GIC and Arch Timer definitions in MADT and GTDT
hw/arm/virt-acpi: Generation of DSDT including virt devices
hw/arm/virt: Enable dynamic generation of ACPI v5.1 tables
hw/arm/Makefile.objs | 2 +-
hw/arm/boot.c | 26 +++
hw/arm/virt-acpi.c | 555 ++++++++++++++++++++++++++++++++++++++++++++
hw/arm/virt.c | 54 ++++-
hw/i386/acpi-build.c | 2 +-
hw/i386/acpi-defs.h | 368 -----------------------------
include/hw/acpi/acpi-defs.h | 535 ++++++++++++++++++++++++++++++++++++++++++
include/hw/arm/arm.h | 2 +
include/hw/arm/virt-acpi.h | 73 ++++++
tests/bios-tables-test.c | 2 +-
10 files changed, 1244 insertions(+), 375 deletions(-)
create mode 100644 hw/arm/virt-acpi.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.h
--
1.9.1
ACPI 5.1 has some major changes for ARM platform and the following
tables which are essential for ARM platforms:
1) MADT table updates for GIC v2/v3.
2) FADT updates for PSCI
3) GTDT for arch timer
This patch set is the ARM64 ACPI core patches covered MADT, FADT
and GTDT, platform board specific drivers are not covered by this
patch set.
We first introduce acpi.c and its related head file which are needed
by ACPI core, and then get RSDP to extract all the ACPI boot-time tables.
When all the boot-time tables (FADT, MADT, GTDT) are ready, then
parse them to init the sytem when booted. Specifically,
a) we use FADT to init PSCI and use PSCI to boot SMP;
b) Use MADT for GIC init and SMP init;
c) GTDT for arch timer init.
This patch set is based on 3.17-rc4 and was tested by Graeme on Juno
and FVP base model boot with ACPI only OK, if you want to test them,
you can pull from acpi-5.1-v5 branch in leg/acpi repo:
git://git.linaro.org/leg/acpi/acpi.git
Updates since v4:
- ACPI uasge doc for ARM64 was updated a lot by Al
- Collect some ACKs from Grant, Olof, Mark
- address some comments from Olof and Catalin since last version
Updates since v3:
- Compile out sleep.c on ARM64 when ACPI enabled
- refactor the GIC init code to address the comments from Marc and
Arnd
- refactor the SMP init code to fix some logic problem when PSCI is
not present, also address some of Grant and Lorenzo's comments
- reorder the patch series and move ACPI table changes to the front
of patch set
- rebase on top of 3.17-rc4
Updates since v2:
- Refactor the code to make SMP/PSCI init with less sperated init
path by Tomasz
- make ACPI depend on EXPERT
- Address lots of comments from Catalin, Sudeep, Geoff
- Add Juno device ACPI driver patches for review
Updates since v1:
- Set ACPI default off on ARM64 suggested by Olof;
- Rebase the patch set on top of linux-next branch/linux-pm tree which
includes the ACPICA for full ACPI 5.1 support.
- Update the document as suggested;
- Adress lots of comments from Mark, Sudeep, Randy, Naresh, Olof, Geoff
and more...
Al Stone (3):
ARM64 / ACPI: Get RSDP and ACPI boot-time tables
ARM64 / ACPI: Introduce early_param for "acpi" and pass acpi=force to
enable ACPI
ARM64 / ACPI: Select ACPI_REDUCED_HARDWARE_ONLY if ACPI is enabled on
ARM64
Ashwin Chaugule (1):
ACPI / table: Add new function to get table entries
Graeme Gregory (4):
ARM64 / ACPI: Introduce sleep-arm.c
ARM64 / ACPI: If we chose to boot from acpi then disable FDT
ARM64 / ACPI: Enable ARM64 in Kconfig
Documentation: ACPI for ARM64
Hanjun Guo (8):
ARM64: Move the init of cpu_logical_map(0) before
unflatten_device_tree()
ARM64 / ACPI: Make PCI optional for ACPI on ARM64
ARM64 / ACPI: Parse FADT table to get PSCI flags for PSCI init
ACPI / table: Print GIC information when MADT is parsed
ARM64 / ACPI: Parse MADT for SMP initialization
ACPI / processor: Make it possible to get CPU hardware ID via GICC
ARM64 / ACPI: Introduce ACPI_IRQ_MODEL_GIC and register device's gsi
ARM64 / ACPI: Parse GTDT to initialize arch timer
Tomasz Nowicki (2):
ACPI / table: Count matched and successfully parsed entries without
specifying max entries
ARM64 / ACPI: Add GICv2 specific ACPI boot support
Documentation/arm64/arm-acpi.txt | 323 ++++++++++++++++++++++++++++++
Documentation/kernel-parameters.txt | 3 +-
arch/arm64/Kconfig | 3 +
arch/arm64/include/asm/acenv.h | 18 ++
arch/arm64/include/asm/acpi.h | 99 ++++++++++
arch/arm64/include/asm/cpu_ops.h | 1 +
arch/arm64/include/asm/pci.h | 11 ++
arch/arm64/include/asm/psci.h | 3 +-
arch/arm64/include/asm/smp.h | 5 +-
arch/arm64/kernel/Makefile | 1 +
arch/arm64/kernel/acpi.c | 356 ++++++++++++++++++++++++++++++++++
arch/arm64/kernel/cpu_ops.c | 4 +-
arch/arm64/kernel/psci.c | 78 +++++---
arch/arm64/kernel/setup.c | 25 ++-
arch/arm64/kernel/smp.c | 2 +-
arch/arm64/kernel/time.c | 7 +
drivers/acpi/Kconfig | 6 +-
drivers/acpi/Makefile | 6 +-
drivers/acpi/bus.c | 3 +
drivers/acpi/internal.h | 5 +
drivers/acpi/processor_core.c | 37 ++++
drivers/acpi/sleep-arm.c | 28 +++
drivers/acpi/tables.c | 115 +++++++++--
drivers/clocksource/arm_arch_timer.c | 117 +++++++++--
drivers/irqchip/irq-gic.c | 106 ++++++++++
drivers/irqchip/irqchip.c | 3 +
include/linux/acpi.h | 5 +
include/linux/clocksource.h | 6 +
include/linux/irqchip/arm-gic-acpi.h | 31 +++
include/linux/pci.h | 37 +++-
30 files changed, 1353 insertions(+), 91 deletions(-)
create mode 100644 Documentation/arm64/arm-acpi.txt
create mode 100644 arch/arm64/include/asm/acenv.h
create mode 100644 arch/arm64/include/asm/acpi.h
create mode 100644 arch/arm64/include/asm/pci.h
create mode 100644 arch/arm64/kernel/acpi.c
create mode 100644 drivers/acpi/sleep-arm.c
create mode 100644 include/linux/irqchip/arm-gic-acpi.h
--
1.7.9.5
Changes since V8:
- Removed unncessary header files.
- Added kerneldoc comments.
- Added intro about PCC in pcc.c
Changes since V7:
- Added timeout to tx method in case the remote dies.
- Restructured usage of acpi_status. Had inverted logic previously.
Changes since V6:
- Cosmetic changes based on Lv's suggestions
Changes since V5:
- Optimize loop that matches channel request.
- Use platform_create_bundle.
- Replace ioread/writes.
- Remove redundant code and headers.
- Restructure common mailbox macros.
- Reformat PCC cmd parsing.
Changes since V4:
- Folded PCC Mailbox helpers into pcc.c
Changes since V3:
- Added PCC helper functions to work around "struct device" limitations.
- PCC driver changes to work with PCC specific Mailbox helpers.
Changes since V2:
- Rebased on top of git://git.linaro.org/landing-teams/working/fujitsu/integration.git
branch mailbox-for-3.17
- Added PCC API to mailbox framework as per Arnd's suggestion to allow usage without ACPI.
Changes since V1:
- Integration with Mailbox framework - https://lkml.org/lkml/2014/5/15/49
This patchset adds support for the PCC (Platform Communication Channel)
interface as described in the current ACPI 5.0 spec. See Section 14 of the
ACPI spec - http://acpi.info/DOWNLOADS/ACPI_5_Errata%20A.pdf for more details
on how PCC works.
In brief PCC is a generic means for PCC clients, to talk to the firmware. The
PCC register space is typically memory mapped IO and uses a doorbell mechanism
to communicate synchronously from the OS to the firmware. The PCC driver is
completely agnostic to the protocol implemented by the PCC clients. It only
implements the enumeration of PCC channels and the low level transport mechanism
and leaves the rest to the PCC clients.
The PCC is meant to be useable in the future by clients such as CPPC
(Collaborative Processor Performance Control), RAS (Reliability,
Availability and Serviceability) and MPST (Memory Power State Tables) and possibly others.
Ashwin Chaugule (1):
Mailbox: Add support for Platform Communication Channel
drivers/mailbox/Kconfig | 12 ++
drivers/mailbox/Makefile | 2 +
drivers/mailbox/mailbox.c | 4 +-
drivers/mailbox/mailbox.h | 16 ++
drivers/mailbox/pcc.c | 369 ++++++++++++++++++++++++++++++++++++++++++++++
5 files changed, 400 insertions(+), 3 deletions(-)
create mode 100644 drivers/mailbox/mailbox.h
create mode 100644 drivers/mailbox/pcc.c
--
1.9.1