From: Paolo Bonzini <bonzini@gnu.org>
To: u-boot@lists.denx.de
Subject: [U-Boot] U-boot qemu-x86 :load acpi tables from fw_cfg.
Date: Mon, 25 May 2015 19:09:09 +0200 [thread overview]
Message-ID: <55635735.3060003@gnu.org> (raw)
In-Reply-To: <CAK25hWNObqNEW7Qg++wJBRXVmyAcxfczrUjcMsAoh2d694VAAQ@mail.gmail.com>
On 22/05/2015 18:54, Saket Sinha wrote:
> Hi Simon,
>
>>>
>>> Is it possible for us to add support to qemu to provide acpi tables
>>> via fw_cfg in u-boot ?
>>>
>>> If we find acpi tables in fw_cfg try loading them, otherwise fallback
>>> to the builtin acpi tables.
>>>
>>> Coreboot does it in the following way -
>>> http://review.coreboot.org/#/c/4040/
>>
>> It seems like it might be useful to implement this in U-Boot. Perhaps
>> look at this after you have the built-in support running?
>>
>
> I guess it would be extremely useful for u-boot.
>
> It is being used by q-boot, a new minimal x86 firmware for QEMU.
> http://lwn.net/Articles/645455/
> https://github.com/bonzini/qboot
>
> q-boot is able to give a minimal booting time, with the help of
> fw_cfg, by reading both the kernel and initrd image
> from fw_cfg.
> I guess ACPI support for both q-boot and qemu-x86 in u-boot can be
> implemented on similar lines.
ACPI support is now included in qboot.
Paolo
prev parent reply other threads:[~2015-05-25 17:09 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAK25hWPNL=w0jWjVscf50XxFDTyo2Yfxk+E9V4JKWZZ4_iuujw@mail.gmail.com>
[not found] ` <CAPnjgZ2SMo0iJfeUB1JASVMPxzpiHcmjVLDEB-j-PaAbXjYtnQ@mail.gmail.com>
2015-05-22 16:54 ` [U-Boot] U-boot qemu-x86 :load acpi tables from fw_cfg Saket Sinha
2015-05-22 17:19 ` Simon Glass
2015-05-25 17:09 ` Paolo Bonzini [this message]
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