From: Gerd Hoffmann <kraxel@redhat.com>
To: Anthony Liguori <anthony@codemonkey.ws>
Cc: Kevin Wolf <kwolf@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
seabios@seabios.org, QEMU Developers <qemu-devel@nongnu.org>,
Markus Armbruster <armbru@redhat.com>
Subject: Re: [Qemu-devel] [PATCH 1/2] pci: Automatically patch PCI device id in PCI ROM
Date: Mon, 18 Oct 2010 12:09:23 +0200 [thread overview]
Message-ID: <4CBC1CD3.1040904@redhat.com> (raw)
In-Reply-To: <4CB8C20A.70706@codemonkey.ws>
On 10/15/10 23:05, Anthony Liguori wrote:
> On 10/15/2010 03:51 PM, Stefan Weil wrote:
>> PCI device with different device ids sometimes share
>> the same rom code. Only the device id and the checksum
>> differ in a boot rom for such devices.
>
> BTW, SeaBIOS doesn't reject ROMs when they're loaded via rombar, only
> when they're loaded via romfile.
SeaBIOS rejects them when loaded from the rom bar and doesn't reject
them when loaded via fw_cfg.
Using the rom bar is the prefered way though, fw_cfg is only there for
compatibility with older versions.
> Maybe it's better to use fw_cfg to explicitly tell SeaBIOS to ignore the
> PCI device id in the rom header for a certain device?
Patching the rom is fine IMHO. Why create + use a separate
communication path when we can use a much simpler approach?
cheers,
Gerd
next prev parent reply other threads:[~2010-10-18 10:09 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-12 12:41 [Qemu-devel] Where's gpxe-eepro100-80862449.rom ? Markus Armbruster
2010-10-12 16:18 ` [Qemu-devel] " Stefan Weil
2010-10-13 7:13 ` Markus Armbruster
2010-10-15 20:51 ` [Qemu-devel] [PATCH 1/2] pci: Automatically patch PCI device id in PCI ROM Stefan Weil
2010-10-15 21:05 ` Anthony Liguori
2010-10-18 10:09 ` Gerd Hoffmann [this message]
2010-10-18 18:39 ` Anthony Liguori
2010-10-21 10:09 ` [SeaBIOS] " Avi Kivity
2010-10-21 13:14 ` Anthony Liguori
2010-10-21 15:34 ` Avi Kivity
2010-10-18 10:04 ` Gerd Hoffmann
2010-10-18 11:16 ` Stefan Weil
2010-10-18 11:54 ` Gerd Hoffmann
2010-10-18 13:16 ` Stefan Weil
2010-10-18 13:30 ` Gerd Hoffmann
2010-10-18 15:50 ` Gerd Hoffmann
2010-10-18 17:54 ` Stefan Weil
2010-10-18 17:55 ` [Qemu-devel] [PATCH 1/2] pci: Automatically patch PCI vendor id and " Stefan Weil
2010-10-18 17:58 ` [Qemu-devel] " Michael S. Tsirkin
2010-10-18 18:42 ` Anthony Liguori
2010-10-18 19:03 ` Michael S. Tsirkin
2010-10-18 19:36 ` Stefan Weil
2010-10-18 19:59 ` Anthony Liguori
2010-10-19 6:40 ` Gerd Hoffmann
2010-10-18 19:56 ` Anthony Liguori
2010-10-18 18:44 ` [Qemu-devel] " Anthony Liguori
2010-10-18 18:53 ` Anthony Liguori
2010-10-18 19:11 ` Stefan Weil
2010-10-19 8:37 ` Michael S. Tsirkin
2010-10-19 21:15 ` Stefan Weil
2010-10-19 21:22 ` Anthony Liguori
2010-10-19 21:25 ` Michael S. Tsirkin
2010-10-19 21:08 ` Stefan Weil
2010-10-20 7:19 ` [Qemu-devel] " Gerd Hoffmann
2010-10-20 20:30 ` Stefan Weil
2010-11-22 6:29 ` Michael S. Tsirkin
2010-10-15 20:51 ` [Qemu-devel] [PATCH 2/2] eepro100: Use a single rom file for all i825xx devices Stefan Weil
2010-11-22 6:29 ` [Qemu-devel] " Michael S. Tsirkin
2010-10-15 21:03 ` [Qemu-devel] Re: Where's gpxe-eepro100-80862449.rom ? Stefan Weil
2010-10-25 12:11 ` Markus Armbruster
2010-10-25 16:23 ` Stefan Weil
2010-10-25 16:54 ` Michael S. Tsirkin
2010-11-15 17:06 ` Stefan Weil
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