From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
To: Shannon Zhao <zhaoshenglong@huawei.com>
Cc: <linux-arm-kernel@lists.infradead.org>,
<ard.biesheuvel@linaro.org>, <stefano.stabellini@citrix.com>,
<david.vrabel@citrix.com>, <catalin.marinas@arm.com>,
<will.deacon@arm.com>, <mark.rutland@arm.com>,
<julien.grall@citrix.com>, <xen-devel@lists.xen.org>,
<devicetree@vger.kernel.org>, <linux-efi@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <ian.campbell@citrix.com>,
<shannon.zhao@linaro.org>, <peter.huangpeng@huawei.com>,
Rob Herring <robh@kernel.org>
Subject: Re: [PATCH v4 13/17] ARM: Xen: Document UEFI support on Xen ARM virtual platforms
Date: Mon, 8 Feb 2016 11:31:23 +0000 [thread overview]
Message-ID: <alpine.DEB.2.02.1602081130480.27008@kaball.uk.xensource.com> (raw)
In-Reply-To: <1454641552-12576-14-git-send-email-zhaoshenglong@huawei.com>
On Fri, 5 Feb 2016, Shannon Zhao wrote:
> From: Shannon Zhao <shannon.zhao@linaro.org>
>
> Add a "uefi" node under /hypervisor node in FDT, then Linux kernel could
> scan this to get the UEFI information.
>
> Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
> Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
> CC: Rob Herring <robh@kernel.org>
> ---
> Documentation/devicetree/bindings/arm/xen.txt | 33 +++++++++++++++++++++++++++
> 1 file changed, 33 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/arm/xen.txt b/Documentation/devicetree/bindings/arm/xen.txt
> index 0f7b9c2..6f83f76 100644
> --- a/Documentation/devicetree/bindings/arm/xen.txt
> +++ b/Documentation/devicetree/bindings/arm/xen.txt
> @@ -15,6 +15,26 @@ the following properties:
> - interrupts: the interrupt used by Xen to inject event notifications.
> A GIC node is also required.
>
> +To support UEFI on Xen ARM virtual platforms, Xen populates the FDT "uefi" node
> +under /hypervisor with following parameters:
> +
> +________________________________________________________________________________
> +Name | Size | Description
> +================================================================================
> +xen,uefi-system-table | 64-bit | Guest physical address of the UEFI System
> + | | Table.
> +--------------------------------------------------------------------------------
> +xen,uefi-mmap-start | 64-bit | Guest physical address of the UEFI memory
> + | | map.
> +--------------------------------------------------------------------------------
> +xen,uefi-mmap-size | 32-bit | Size in bytes of the UEFI memory map
> + | | pointed to in previous entry.
> +--------------------------------------------------------------------------------
> +xen,uefi-mmap-desc-size | 32-bit | Size in bytes of each entry in the UEFI
> + | | memory map.
> +--------------------------------------------------------------------------------
> +xen,uefi-mmap-desc-ver | 32-bit | Version of the mmap descriptor format.
> +--------------------------------------------------------------------------------
>
> Example (assuming #address-cells = <2> and #size-cells = <2>):
>
> @@ -22,4 +42,17 @@ hypervisor {
> compatible = "xen,xen-4.3", "xen,xen";
> reg = <0 0xb0000000 0 0x20000>;
> interrupts = <1 15 0xf08>;
> + uefi {
> + xen,uefi-system-table = <0xXXXXXXXX>;
> + xen,uefi-mmap-start = <0xXXXXXXXX>;
> + xen,uefi-mmap-size = <0xXXXXXXXX>;
> + xen,uefi-mmap-desc-size = <0xXXXXXXXX>;
> + xen,uefi-mmap-desc-ver = <0xXXXXXXXX>;
> + };
> };
> +
> +The format and meaning of the "xen,uefi-*" parameters are similar to those in
> +Documentation/arm/uefi.txt, which are provided by the regular UEFI stub. However
> +they differ because they are provided by the Xen hypervisor, together with a set
> +of UEFI runtime services implemented via hypercalls, see
> +http://xenbits.xen.org/docs/unstable/hypercall/x86_64/include,public,platform.h.html.
next prev parent reply other threads:[~2016-02-08 11:32 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-05 3:05 [PATCH v4 00/17] Add ACPI support for Xen Dom0 on ARM64 Shannon Zhao
2016-02-05 3:05 ` [PATCH v4 01/17] Xen: ACPI: Hide UART used by Xen Shannon Zhao
2016-02-06 10:23 ` Rafael J. Wysocki
2016-02-08 10:57 ` Stefano Stabellini
2016-02-08 22:25 ` Rafael J. Wysocki
2016-02-09 11:19 ` Stefano Stabellini
2016-02-10 22:29 ` Rafael J. Wysocki
2016-02-11 16:04 ` Stefano Stabellini
2016-02-11 22:22 ` Rafael J. Wysocki
2016-02-12 11:50 ` Stefano Stabellini
2016-02-12 12:57 ` Rafael J. Wysocki
2016-02-29 2:02 ` Shannon Zhao
2016-02-05 3:05 ` [PATCH v4 02/17] xen/grant-table: Move xlated_setup_gnttab_pages to common place Shannon Zhao
2016-02-05 3:05 ` [PATCH v4 03/17] Xen: xlate: Use page_to_xen_pfn instead of page_to_pfn Shannon Zhao
2016-02-05 3:05 ` [PATCH v4 04/17] arm/xen: Use xen_xlate_map_ballooned_pages to setup grant table Shannon Zhao
2016-02-05 3:05 ` [PATCH v4 05/17] xen: memory : Add new XENMAPSPACE type XENMAPSPACE_dev_mmio Shannon Zhao
2016-02-08 11:43 ` Stefano Stabellini
2016-02-05 3:05 ` [PATCH v4 06/17] Xen: ARM: Add support for mapping platform device mmio Shannon Zhao
2016-02-05 3:05 ` [PATCH v4 07/17] Xen: ARM: Add support for mapping AMBA " Shannon Zhao
2016-02-05 3:05 ` [PATCH v4 08/17] Xen: public/hvm: sync changes of HVM_PARAM_CALLBACK_VIA ABI from Xen Shannon Zhao
2016-02-05 3:05 ` [PATCH v4 09/17] xen/hvm/params: Add a new delivery type for event-channel in HVM_PARAM_CALLBACK_IRQ Shannon Zhao
2016-02-05 3:05 ` [PATCH v4 10/17] arm/xen: Get event-channel irq through HVM_PARAM when booting with ACPI Shannon Zhao
2016-02-05 3:05 ` [PATCH v4 11/17] ARM: XEN: Move xen_early_init() before efi_init() Shannon Zhao
2016-02-05 3:05 ` [PATCH v4 12/17] ARM64: ACPI: Check if it runs on Xen to enable or disable ACPI Shannon Zhao
2016-02-05 3:05 ` [PATCH v4 13/17] ARM: Xen: Document UEFI support on Xen ARM virtual platforms Shannon Zhao
2016-02-08 11:31 ` Stefano Stabellini [this message]
2016-02-05 3:05 ` [PATCH v4 14/17] XEN: EFI: Move x86 specific codes to architecture directory Shannon Zhao
2016-02-05 3:05 ` [PATCH v4 15/17] ARM64: XEN: Add a function to initialize Xen specific UEFI runtime services Shannon Zhao
2016-02-05 3:05 ` [PATCH v4 16/17] FDT: Add a helper to get specified name subnode Shannon Zhao
2016-02-05 14:15 ` Stefano Stabellini
2016-02-09 5:04 ` Rob Herring
2016-02-23 11:13 ` Shannon Zhao
2016-02-24 14:53 ` Rob Herring
2016-02-05 3:05 ` [PATCH v4 17/17] Xen: EFI: Parse DT parameters for Xen specific UEFI Shannon Zhao
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