From: Shannon Zhao <shannon.zhao@xxxxxxxxxx> 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. The corresponding Xen patches can be fetched from [2]. Thanks, Shannon [1] http://lists.xen.org/archives/html/xen-devel/2015-11/msg00488.html [2] http://git.linaro.org/people/shannon.zhao/xen.git ACPI_XEN_ARM_V3 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 (16): 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/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 ARM: XEN: Set EFI_PARAVIRT if Xen supports EFI Xen: EFI: Parse DT parameters for Xen specific UEFI XEN: EFI: Move x86 specific codes to architecture directory ARM64: XEN: Initialize Xen specific UEFI runtime services Documentation/devicetree/bindings/arm/xen.txt | 42 ++++++ arch/arm/xen/enlighten.c | 121 +++++++++++++---- arch/arm64/kernel/acpi.c | 12 +- arch/arm64/kernel/efi.c | 5 + arch/arm64/kernel/setup.c | 2 +- arch/arm64/xen/Makefile | 1 + arch/arm64/xen/efi.c | 36 +++++ arch/x86/xen/efi.c | 112 ++++++++++++++++ arch/x86/xen/grant-table.c | 57 +------- drivers/acpi/bus.c | 30 +++++ drivers/firmware/efi/efi.c | 45 ++++++- drivers/xen/Kconfig | 2 +- drivers/xen/Makefile | 1 + drivers/xen/arm-device.c | 183 ++++++++++++++++++++++++++ drivers/xen/efi.c | 174 +++++------------------- drivers/xen/xlate_mmu.c | 61 +++++++++ include/xen/interface/hvm/params.h | 5 + include/xen/interface/memory.h | 1 + include/xen/xen-ops.h | 33 +++-- 19 files changed, 689 insertions(+), 234 deletions(-) create mode 100644 arch/arm64/xen/efi.c create mode 100644 drivers/xen/arm-device.c -- 2.0.4 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
