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Re: [Qemu-devel] Announcing qboot, a minimal x86 firmware for QEMU

From: Vasiliy Tolstov
Subject: Re: [Qemu-devel] Announcing qboot, a minimal x86 firmware for QEMU
Date: Mon, 25 May 2015 09:21:49 +0300

2015-05-23 6:55 GMT+03:00 Kevin O'Connor <address@hidden>:
> Out of curiosity, I ran some additional timing tests.  With SeaBIOS
> fully stripped down (via Kconfig), it takes ~20ms to get to the boot
> phase on my old AMD system.  Of that 20ms, ~7ms is to enable shadow
> ram, 2ms is to calibrate the cpu timestamp counter, 4ms is for pci
> init, and ~6ms is to make the shadow ram area read-only.  The time in
> the remaining parts of the SeaBIOS code is so small that it's hard to
> measure.

Can you share config for seabios? As i understand i can safety to
remove keybord, ps2, usb, ata/ahci and leave only virtio (in case of
using qemu to boo linux/freebsd/windows systems) ?

Vasiliy Tolstov,
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