Date: Sun, 28 Apr 2013 00:13:59 -0700 From: Tim Kientzle <tim@kientzle.com> To: Tim Kientzle <kientzle@freebsd.org> Cc: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org> Subject: Re: BeagleBone Black Message-ID: <77E91A57-7880-4908-8999-6115333F5002@kientzle.com> In-Reply-To: <F01F0BC9-8464-469C-B1FE-D0E6AC217164@freebsd.org> References: <CANuCnH9XP3Jn30EWCuZ0AmQF6MA4q4U9GUB7LU=XXZEdp7ZJ8g@mail.gmail.com> <D74DF146-7E72-4A2A-B74B-A20758010166@kientzle.com> <26A08C89-95EA-463D-98C5-A471F8D15C90@freebsd.org> <BCB14F16-203D-4C9A-8318-4E7DF1F88E17@kientzle.com> <54A0884D-31D0-4FC6-BBB5-58E3D11050E6@freebsd.org> <F01F0BC9-8464-469C-B1FE-D0E6AC217164@freebsd.org>
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On Apr 27, 2013, at 11:47 PM, Tim Kientzle wrote: >> I have mine now but I think that the USB drivers need an update. = It's not recognized when >> I plug it in. The last update to uftdi on my box is April 15th. = I'll go check if there's a newer one >> and/or if I need to add a value for the new board. >=20 > Just got mine a few minutes ago=85 >=20 > Apparently, the BeagleBone Black lacks the built-in serial to USB = adapter that the original BeagleBone had. Serial is available on a = 6-pin header that should work with common 3.3v serial-to-USB adapters. = I'll try it in the morning. The 4-pin adapter I got from Adafruit for use with Raspberry Pi seems to work just fine, though the CircuitCo documentation has the = instructions wrong. It should be: Black =3D> Pin 1 Green =3D> Pin 4 White =3D> Pin 5 > It looks like the 2GB Flash takes the form of an eMMC connected to the = second MMC interface. So it should be straightforward to add support = for it. With 8-bit support, it should be a lot faster than a uSD card. = We'll see. Harumph. Looks like it always boots initially from the eMMC and U-Boot then looks at the boot switch to decide whether to continue from eMMC or uSD. This sucks: the U-Boot on the eMMC doesn't have ELF support nor API support so can't load and boot ubldr. Short version: The existing FreeBSD images for BeagleBone won't work as-is. At a minimum, we'll have to replace the U-Boot on the eMMC with one that has ELF and API enabled. I guess I'll be spending more quality time with U-Boot. :-/ Tim
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