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    SubjectRe: [PATCH v9 20/21] Documentation: ACPI for ARM64
    On 2015/2/25 16:40, Hanjun Guo wrote:
    > From: Graeme Gregory <graeme.gregory@linaro.org>
    >
    > Add documentation for the guidelines of how to use ACPI
    > on ARM64.
    >
    > Reviewed-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
    > Reviewed-by: Yi Li <phoenix.liyi@huawei.com>
    > Reviewed-by: Mark Langsdorf <mlangsdo@redhat.com>
    > Reviewed-by: Ashwin Chaugule <ashwinc@codeaurora.org>
    > Acked-by: Robert Richter <rrichter@cavium.com>
    > Signed-off-by: Graeme Gregory <graeme.gregory@linaro.org>
    > Signed-off-by: Al Stone <al.stone@linaro.org>
    > Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
    > ---
    > Documentation/arm64/arm-acpi.txt | 506 +++++++++++++++++++++++++++++++++++++++
    > 1 file changed, 506 insertions(+)
    > create mode 100644 Documentation/arm64/arm-acpi.txt
    >
    > diff --git a/Documentation/arm64/arm-acpi.txt b/Documentation/arm64/arm-acpi.txt
    > new file mode 100644
    > index 0000000..24cf832
    > --- /dev/null
    > +++ b/Documentation/arm64/arm-acpi.txt
    > @@ -0,0 +1,506 @@
    > +ACPI on ARMv8 Servers
    > +---------------------
    > +ACPI can be used for ARMv8 general purpose servers designed to follow
    > +the ARM SBSA (Server Base System Architecture) [0] and SBBR (Server
    > +Base Boot Requirements) [1] specifications. Please note that the SBBR
    > +can be retrieved simply by visiting [1], but the SBSA is currently only
    > +available to those with an ARM login due to ARM IP licensing concerns.
    > +
    > +The ARMv8 kernel implements the reduced hardware model of ACPI version
    > +5.1 or later. Links to the specification and all external documents
    > +it refers to are managed by the UEFI Forum. The specification is
    > +available at http://www.uefi.org/specifications and documents referenced
    > +by the specification can be found via http://www.uefi.org/acpi.
    > +
    > +If an ARMv8 system does not meet the requirements of the SBSA and SBBR,
    > +or cannot be described using the mechanisms defined in the required ACPI
    > +specifications, then ACPI may not be a good fit for the hardware.
    > +
    > +While the documents mentioned above set out the requirements for building
    > +industry-standard ARMv8 servers, they also apply to more than one operating
    > +system. The purpose of this document is to describe the interaction between
    > +ACPI and Linux only, on an ARMv8 system -- that is, what Linux expects of
    > +ACPI and what ACPI can expect of Linux.
    > +
    > +

    Here. Two blank lines.

    > +Why ACPI on ARM?


    --
    Thanks,
    Shannon



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