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Re: [Qemu-devel] [PATCH v9 5/5] fw_cfg: document ACPI device node inform
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] [PATCH v9 5/5] fw_cfg: document ACPI device node information |
Date: |
Tue, 23 Feb 2016 11:51:43 +0200 |
On Fri, Feb 19, 2016 at 01:20:29PM -0500, Gabriel L. Somlo wrote:
> Signed-off-by: Gabriel Somlo <address@hidden>
> Reviewed-by: Laszlo Ersek <address@hidden>
> Reviewed-by: Marc MarĂ <address@hidden>
Reviewed-by: Michael S. Tsirkin <address@hidden>
> ---
> docs/specs/fw_cfg.txt | 9 +++++++++
> 1 file changed, 9 insertions(+)
>
> diff --git a/docs/specs/fw_cfg.txt b/docs/specs/fw_cfg.txt
> index 2099ad9..5414140 100644
> --- a/docs/specs/fw_cfg.txt
> +++ b/docs/specs/fw_cfg.txt
> @@ -84,6 +84,15 @@ Selector Register address: Base + 8 (2 bytes)
> Data Register address: Base + 0 (8 bytes)
> DMA Address address: Base + 16 (8 bytes)
>
> +== ACPI Interface ==
> +
> +The fw_cfg device is defined with ACPI ID "QEMU0002". Since we expect
> +ACPI tables to be passed into the guest through the fw_cfg device itself,
> +the guest-side firmware can not use ACPI to find fw_cfg. However, once the
> +firmware is finished setting up ACPI tables and hands control over to the
> +guest kernel, the latter can use the fw_cfg ACPI node for a more accurate
> +inventory of in-use IOport or MMIO regions.
> +
> == Firmware Configuration Items ==
>
> === Signature (Key 0x0000, FW_CFG_SIGNATURE) ===
> --
> 2.4.3
- [Qemu-devel] [PATCH v9 0/5] add ACPI node for fw_cfg on pc and arm, Gabriel L. Somlo, 2016/02/19
- [Qemu-devel] [PATCH v9 2/5] pc: fw_cfg: move ioport base constant to pc.h, Gabriel L. Somlo, 2016/02/19
- [Qemu-devel] [PATCH v9 3/5] acpi: pc: add fw_cfg device node to dsdt, Gabriel L. Somlo, 2016/02/19
- [Qemu-devel] [PATCH v9 4/5] acpi: arm: add fw_cfg device node to dsdt, Gabriel L. Somlo, 2016/02/19
- [Qemu-devel] [PATCH v9 5/5] fw_cfg: document ACPI device node information, Gabriel L. Somlo, 2016/02/19
- Re: [Qemu-devel] [PATCH v9 5/5] fw_cfg: document ACPI device node information,
Michael S. Tsirkin <=
- [Qemu-devel] [PATCH v9 1/5] fw_cfg: expose control register size in fw_cfg.h, Gabriel L. Somlo, 2016/02/19
- Re: [Qemu-devel] [PATCH v9 0/5] add ACPI node for fw_cfg on pc and arm, Igor Mammedov, 2016/02/22
- Re: [Qemu-devel] [PATCH v9 0/5] add ACPI node for fw_cfg on pc and arm, Gerd Hoffmann, 2016/02/23
- Re: [Qemu-devel] [PATCH v9 0/5] add ACPI node for fw_cfg on pc and arm, Igor Mammedov, 2016/02/23
- Re: [Qemu-devel] [PATCH v9 0/5] add ACPI node for fw_cfg on pc and arm, Gerd Hoffmann, 2016/02/23
- Re: [Qemu-devel] [PATCH v9 0/5] add ACPI node for fw_cfg on pc and arm, Michael S. Tsirkin, 2016/02/23
- Re: [Qemu-devel] [PATCH v9 0/5] add ACPI node for fw_cfg on pc and arm, Igor Mammedov, 2016/02/23
- Re: [Qemu-devel] [PATCH v9 0/5] add ACPI node for fw_cfg on pc and arm, Michael S. Tsirkin, 2016/02/23
- Re: [Qemu-devel] [PATCH v9 0/5] add ACPI node for fw_cfg on pc and arm, Igor Mammedov, 2016/02/23
- Re: [Qemu-devel] [PATCH v9 0/5] add ACPI node for fw_cfg on pc and arm, Michael S. Tsirkin, 2016/02/23