[SeaBIOS] How much RAM is required?

Fred . eldmannen at gmail.com
Thu Aug 9 11:09:45 CEST 2012


But QEMU may use other firmware/payload than SeaBIOS which might
require less than 1 MB of RAM.

On Thu, Aug 9, 2012 at 10:15 AM, Markus Armbruster <armbru at redhat.com> wrote:
> "Kevin O'Connor" <kevin at koconnor.net> writes:
>
>> On Wed, Aug 08, 2012 at 01:50:13PM +0200, Markus Armbruster wrote:
>>> Watch this:
>>>
>>>     $ qemu-system-x86_64 -nodefaults -vnc :0 -monitor stdio -m 16k
>>>     QEMU 1.1.50 monitor - type 'help' for more information
>>>     (qemu) qemu: fatal: Trying to execute code outside RAM or ROM at
>>> 0x0000000000004000
>>>
>>> Admittedly a silly thing to try.  I don't really expect SeaBIOS to work
>>> with 16KiB of RAM.  But I'm curious: how much does it require?
>>
>> SeaBIOS requires a minimum of 1Meg of ram.  I didn't even know one
>> could request less than 1meg of ram from QEMU.
>
> I'll cook up a QEMU patch to give it at least that much.
>
> Thanks!
>
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