|
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH RFC 00/35] Add ACPI support for arm64 on Xen
From: Parth Dixit <parth.dixit@xxxxxxxxxx> This patch series adds ACPI support for arm64. Xen reads static tables described by ACPI standard (5.1) from uefi and configures timer, gic and uart. ACPI tables are modified to enable PSCI, HVC and xen specific information (grant table and event channel interrupts) and mapped into dom0 address space. A skeleton device tree is created to pass memory (which cannot be passed using ACPI) and rsdp pointer to DOM0. DOM0 parses dynamic ACPI tables and configure other peripherals. - patches 1-19 add ACPI support for xen/uefi interface - patches 20-35 add ACPI support for xen/dom0 interface Last patch "xen: arm64: Add ACPI support" enables the support for ACPI so that individual patches do not affect working xen code base. Instructions for reproducing the setup and working code base can be found in the following repositories wiki : https://wiki.linaro.org/LEG/Engineering/Xen_boot_on_FVP_ACPI_UEFI linux : https://git.linaro.org/people/parth.dixit/xen-acpi-support/leg-kernel.git xen : https://git.linaro.org/people/parth.dixit/xen-acpi-support/xen.git uefi : https://git.linaro.org/people/parth.dixit/xen-acpi-support/linaro-edk2.git Few workarounds have been made to get it working, these are as follows 1. Xen assumes that mmio regions are defined in firmware. It reads this information from uefi tables and map's it to dom0 address space. Right now FVP firmware on which this series has been tested does not contains all the mmio regions defined in ACPI supplied by firmware, to overcome this hard coding of mmio regions is done. 2. Linux is checking if mapped pages belong to ram and when this check fails(incorrectly) it maps RAM using ioremap, to overcome this at present this check is disabled in linux. 3. Device specific interrupt information is defined in DSDT tables in ACPI. Parsing this table is out of scope for xen so it uses dom0 to parse DSDT table and enables the interrupt dynamically when they are enabled by dom0. 4. Grant table region and event channel interrupts are hard coded right now. 5. RSDP ponter is exposed to dom0 by using "rsdp" node, this node is not yet defined in linux and its name may get changed to "linux,acpi-rsdp" or something else. Naresh Bhat (22): xen: acpi: Build numa and pmstate x86 only xen: arm64: ACPI: Support common ACPI drivers xen: arm64: ACPI: Add basic ACPI initialization ACPI / ACPICA: Introduce ARM Boot Architecture Flags in FADT ARM64 / ACPI: Parse FADT table to get PSCI flags ACPI: Add Generic Interrupt and Distributor struct ACPI / ACPICA: Add new features for MADT which introduced by ACPI 5.1 ACPI / table: Print GIC information when MADT is parsed Add cpumask_next_zero set_cpu_present and possible asm / arm: Introduce cputype.h ARM64 / ACPI: Parse MADT to map logical cpu to MPIDR and get cpu_possible/present_map ARM64: Initialization of cpu_logical_map(0) ACPI: Introduce acpi_parse_entries ACPI / ACPICA: Add GTDT support updated by ACPI 5.1 ARM64 / ACPI: Define ACPI_IRQ_MODEL_GIC needed for arm ARM64 / ACPI: Parse GTDT to initialize timer pl011: Initialize serial from ACPI SPCR table ACPI / GICv2: Add GIC specific ACPI boot support xen/arm: Prepare a min DT for DOM0 xen/arm: Create memory node for DOM0 xen/arm: Create chosen node for DOM0 xen: arm64: Add ACPI support Parth Dixit (13): arm : add helper function for setting interrupt type arm: acpi add status override table arm : acpi add xen environment table arm: acpi add helper functions to map memory regions arm : acpi read mmio tables from uefi arm: acpi map mmio regions to dom0 arm: acpi map acpi tables in dom0 arm : acpi enable PSCI and hvc in acpi FADT table arm : acpi map XSDT table to dom0 arm : acpi map status override table to dom0 arm : acpi map xen environment table to dom0 arm : acpi enable efi for acpi arm : acpi workarounds for firmware/linux dependencies config/arm64.mk | 1 + xen/arch/arm/arm64/Makefile | 1 + xen/arch/arm/arm64/acpi/Makefile | 1 + xen/arch/arm/arm64/acpi/arm-core.c | 508 ++++++++++++++++++++++++++++++++++ xen/arch/arm/domain_build.c | 294 +++++++++++++++++++- xen/arch/arm/efi/efi-boot.h | 16 ++ xen/arch/arm/gic-v2.c | 271 ++++++++++++++++++ xen/arch/arm/irq.c | 19 ++ xen/arch/arm/p2m.c | 24 ++ xen/arch/arm/setup.c | 36 ++- xen/arch/arm/time.c | 66 +++++ xen/arch/arm/vgic.c | 16 ++ xen/common/cpu.c | 18 ++ xen/common/efi/runtime.c | 6 + xen/common/sysctl.c | 2 + xen/drivers/acpi/Makefile | 4 +- xen/drivers/acpi/osl.c | 13 +- xen/drivers/acpi/tables.c | 110 +++++++- xen/drivers/acpi/utilities/utglobal.c | 1 + xen/drivers/char/pl011.c | 69 +++++ xen/include/acpi/actbl.h | 12 +- xen/include/acpi/actbl1.h | 61 +++- xen/include/acpi/actbl2.h | 36 +++ xen/include/acpi/actbl3.h | 90 +++++- xen/include/asm-arm/acpi.h | 113 ++++++++ xen/include/asm-arm/arm64/page.h | 2 + xen/include/asm-arm/config.h | 5 + xen/include/asm-arm/cputype.h | 83 ++++++ xen/include/asm-arm/irq.h | 4 + xen/include/asm-arm/p2m.h | 10 + xen/include/asm-arm/setup.h | 1 + xen/include/xen/acpi.h | 20 ++ xen/include/xen/cpumask.h | 40 +++ xen/include/xen/serial.h | 1 + xen/include/xen/time.h | 1 + 35 files changed, 1929 insertions(+), 26 deletions(-) create mode 100644 xen/arch/arm/arm64/acpi/Makefile create mode 100644 xen/arch/arm/arm64/acpi/arm-core.c create mode 100644 xen/include/asm-arm/acpi.h create mode 100644 xen/include/asm-arm/cputype.h -- 1.9.1 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
|
 |
Lists.xenproject.org is hosted with RackSpace, monitoring our |