Date: Mon, 08 May 2000 11:12:53 -0400 (EDT) From: John Baldwin <jhb@FreeBSD.org> To: freebsd-hackers@FreeBSD.org Subject: USB Support during Install Message-ID: <200005081512.LAA03279@server.baldwin.cx>
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Hey all, I have been working on adding USB support into our initial install as I've mentioned previously. Currently, the only hold-up is that USB keyboards can't be used in the kernel userconfig. Thus, our install currently requires an AT or PS/2 keyboard for x86 machines until the userconfig utility moves into the loader where it belongs. Alpha machines should be able to work provided they can workaround the fact that SRM currently doesn't support USB. I have not yet tested this stuff on an Alpha however, so no Alpha-specific patches are in the patchset. However, almost all of my patches can be safely applied to enable USB support in the install, with the exception that USB keyboards will not work during the install itself. After the install USB keyboards will work fine. This patchset includes a couple of things: 1) Add USB devices to /dev on the install floppy. 2) Add kbd1 to MAKEDEV's all) target so that we support using kbdcontrol to switch keyboards out of the box. 3) Add usbd and usbdevs to the install floppy in /stand. 4) Add USB support to sysintall. This checks to see if USB was detected during boot-up, and if so it enables usbd in rc.conf and starts up usbd. 5) Turn on USB support in GENERIC. 6) Add KBD_INSTALL_CDEV into GENERIC. 7) Turn on keyboard probing in sc0. The syscons driver will now use a flag documented in ukbd(4) but not in sc(4) that tells syscons to actively search for a keyboard device if none is found. This allows USB keyboards to just be plugged in and instantly start working. 8) Require the atkbd0 driver to actually probe to see if a keyboard is there. This allows USB keyboards to be seen by sc0 if an AT keyboard isn't plugged into the computer. This also means that you will no longer be able to plug an AT keyboard into a machine after it has booted and use it. AT keyboards aren't designed for this anyway. USB keyboards are and they work. Notes: 7) and 8) are done via flags in GENERIC, so you can turn them off in your custom kernel if you like to fry your motherboard by plugging in AT keyboards while the computer is on. Also, if both an AT keyboard and a USB keyboard are plugged into the machine when it is booted, the AT keyboard takes precedence. Finally, the AT keyboard is only probed during boot. So if you unplug your AT keyboard and plug in a USB keyboard, sc0 will still use the AT keyboard as its primary keyboard until you use kbdcontrol to change it. The patchset for all of this is at http://www.FreeBSD.org/~jhb/patches/usb.support.patch. Please review and send comments as I'd like to commit it by the end of the week. -- John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/ PGP Key: http://www.cslab.vt.edu/~jobaldwi/pgpkey.asc "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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