From: Shannon Zhao <shannon.z...@linaro.org> This patch set adds ACPI support for Xen Dom0 on ARM64. The relevant Xen ACPI on ARM64 design document could be found from [1].
This patch set adds a new FDT node "uefi" under /hypervisor to pass UEFI information. Introduce a bus notifier of AMBA and Platform bus to map the new added device's MMIO space. Make Xen domain use xlated_setup_gnttab_pages to setup grant table and a new hypercall to get event-channel irq. Regarding the initialization flow of Linux kernel, it needs to move xen_early_init() before efi_init(). Then xen_early_init() will check whether it runs on Xen through the /hypervisor node and efi_init() will call a new function fdt_find_xen_uefi_params(), to parse those xen,uefi-* parameters just like the existing efi_get_fdt_params(). And in arm64_enable_runtime_services() it will check whether it runs on Xen and call another new function xen_efi_runtime_setup() to setup runtime service instead of efi_native_runtime_setup(). The xen_efi_runtime_setup() will assign the runtime function pointers with the functions of driver/xen/efi.c. And since we pass a /hypervisor node and a /chosen node to Dom0, it needs to check whether the DTS only contains a /hypervisor node and a /chosen node in acpi_boot_table_init(). Patches are tested on FVP base model. Thanks, Shannon [1] http://lists.xen.org/archives/html/xen-devel/2015-11/msg00488.html Changes since v8: * rebased on v4.6-rc1 * print UART device address (PATCH 1) * use xen_for_each_gfn (PATCH 3) * reduce indentation by inverting the condition (PATCH 10) * move xen_early_init() before efi_init() as well for ARM (PATCH 11) * sync the document with Xen (PATCH 13) Changes since v7: * add __init prefix for acpi_get_spcr_uart_addr (PATCH 1) Changes since v6: * rebase on linux master * refactor codes as acpi_get_spcr_uart_addr (PATCH 1) * sync with Xen (patch 9) Changes since v5: * rebase on linux master * use acpi_dev_resource_memory to parse the device memory info(patch 1) * sync with Xen (patch 9) Changes since v4: * rebase on linux master * move the check acpi_device_should_be_hidden into acpi_bus_type_and_status (patch 1) * use existing function fdt_subnode_offset (patch 16) Changes since v3: * rebase on linux master * print a warning when there is no SPCR table * rephase the commit message of PATCH 3 * rephase the words of PATCH 13 * use strcmp and factor the function in PATCH 16 * Add several ACKs and RBs, thanks a lot Changes since v2: * Use 0 to check if it should ignore the UART * Fix the use of page_to_xen_pfn * Factor ACPI and DT parts in xen_guest_init * Check "uefi" node by full path * Fix the statement of Documentation/devicetree/bindings/arm/xen.txt Changes since v1: * Rebase on linux mainline and wallclock patch from Stefano * Refactor AMBA and platform device MMIO map to one file * Use EFI_PARAVIRT to check if it supports XEN EFI * Refactor Xen EFI codes * Address other comments Shannon Zhao (17): Xen: ACPI: Hide UART used by Xen xen/grant-table: Move xlated_setup_gnttab_pages to common place Xen: xlate: Use page_to_xen_pfn instead of page_to_pfn arm/xen: Use xen_xlate_map_ballooned_pages to setup grant table xen: memory : Add new XENMAPSPACE type XENMAPSPACE_dev_mmio Xen: ARM: Add support for mapping platform device mmio Xen: ARM: Add support for mapping AMBA device mmio Xen: public/hvm: sync changes of HVM_PARAM_CALLBACK_VIA ABI from Xen xen/hvm/params: Add a new delivery type for event-channel in HVM_PARAM_CALLBACK_IRQ arm/xen: Get event-channel irq through HVM_PARAM when booting with ACPI ARM: XEN: Move xen_early_init() before efi_init() ARM64: ACPI: Check if it runs on Xen to enable or disable ACPI ARM: Xen: Document UEFI support on Xen ARM virtual platforms XEN: EFI: Move x86 specific codes to architecture directory ARM64: XEN: Add a function to initialize Xen specific UEFI runtime services FDT: Add a helper to get the subnode by given name Xen: EFI: Parse DT parameters for Xen specific UEFI Shannon Zhao (17): Xen: ACPI: Hide UART used by Xen xen/grant-table: Move xlated_setup_gnttab_pages to common place Xen: xlate: Use page_to_xen_pfn instead of page_to_pfn arm/xen: Use xen_xlate_map_ballooned_pages to setup grant table xen: memory : Add new XENMAPSPACE type XENMAPSPACE_dev_mmio Xen: ARM: Add support for mapping platform device mmio Xen: ARM: Add support for mapping AMBA device mmio Xen: public/hvm: sync changes of HVM_PARAM_CALLBACK_VIA ABI from Xen xen/hvm/params: Add a new delivery type for event-channel in HVM_PARAM_CALLBACK_IRQ arm/xen: Get event-channel irq through HVM_PARAM when booting with ACPI ARM: XEN: Move xen_early_init() before efi_init() ARM64: ACPI: Check if it runs on Xen to enable or disable ACPI ARM: Xen: Document UEFI support on Xen ARM virtual platforms XEN: EFI: Move x86 specific codes to architecture directory ARM64: XEN: Add a function to initialize Xen specific UEFI runtime services FDT: Add a helper to get the subnode by given name Xen: EFI: Parse DT parameters for Xen specific UEFI Documentation/devicetree/bindings/arm/xen.txt | 35 +++++ arch/arm/include/asm/xen/xen-ops.h | 6 + arch/arm/kernel/setup.c | 2 +- arch/arm/xen/Makefile | 1 + arch/arm/xen/efi.c | 40 ++++++ arch/arm/xen/enlighten.c | 109 +++++++++++---- arch/arm64/include/asm/xen/xen-ops.h | 6 + arch/arm64/kernel/acpi.c | 12 +- arch/arm64/kernel/setup.c | 2 +- arch/arm64/xen/Makefile | 1 + arch/x86/xen/efi.c | 112 ++++++++++++++++ arch/x86/xen/grant-table.c | 57 +------- drivers/acpi/scan.c | 69 ++++++++++ drivers/firmware/efi/arm-runtime.c | 17 ++- drivers/firmware/efi/efi.c | 45 ++++++- drivers/of/fdt.c | 13 ++ drivers/xen/Kconfig | 2 +- drivers/xen/Makefile | 1 + drivers/xen/arm-device.c | 184 ++++++++++++++++++++++++++ drivers/xen/efi.c | 174 +++++------------------- drivers/xen/xlate_mmu.c | 77 +++++++++++ include/linux/of_fdt.h | 2 + include/xen/interface/hvm/params.h | 40 +++++- include/xen/interface/memory.h | 1 + include/xen/xen-ops.h | 32 +++-- 25 files changed, 792 insertions(+), 248 deletions(-) create mode 100644 arch/arm/include/asm/xen/xen-ops.h create mode 100644 arch/arm/xen/efi.c create mode 100644 arch/arm64/include/asm/xen/xen-ops.h create mode 100644 drivers/xen/arm-device.c -- 2.0.4
