From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org
X-Spam-Level: 
X-Spam-Status: No, score=0.2 required=5.0 tests=DKIM_INVALID,DKIM_SIGNED
	autolearn=no autolearn_force=no version=3.4.4
Received: (qmail 15922 invoked from network); 26 Apr 2021 23:50:38 -0000
Received: from 1ess.inri.net (216.126.196.35)
  by inbox.vuxu.org with ESMTPUTF8; 26 Apr 2021 23:50:38 -0000
Received: from mout02.posteo.de ([185.67.36.66]) by 1ess; Mon Apr 26 19:42:41 -0400 2021
Received: from submission (posteo.de [89.146.220.130]) 
	by mout02.posteo.de (Postfix) with ESMTPS id AAD472400E5
	for <9front@9front.org>; Tue, 27 Apr 2021 01:42:27 +0200 (CEST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=posteo.net; s=2017;
	t=1619480547; bh=0o+wUa5TZgBn0eK07zY9azivznIqdPi3/HmsZbYioI4=;
	h=To:Subject:From:Date:From;
	b=L0FH1RefGNKWJ2eYrOa9NbgfwNXTdvNLob1zz73w0NyI6P/bsXTdoy0LPgoLCV8iF
	 fRTgiskpVLgtwWzx1TBPesnaSp1v+S+19+qgPHuw7LSbTURdLLqolgTQdDtWU3gwe/
	 n9H+ujfQ/bzL3nl4Sm09zOyWB2m8BajaSzVVrA1Fj2mO1Sa9VSKtGa4gk+Fiy6QoN3
	 CckGe4/tpYt8pm7PzYNPWNats2xvRbi9IrHsKwaBMQv07aXmILwVMjNHDMT45DirM8
	 xeAZVkawN5OoP3N8pPzvxLicX+PYIu2rILDhrahgcTNEGljTGJ7tHNYnMT8iuVeVwD
	 +ARcv1TYM+qCQ==
Received: from customer (localhost [127.0.0.1])
	by submission (posteo.de) with ESMTPSA id 4FThJf6l9qz9rxK
	for <9front@9front.org>; Tue, 27 Apr 2021 01:42:26 +0200 (CEST)
Message-ID: <5CDC9DCBE75EA2AF8E3C33371D8D76BC@posteo.net>
Content-Type: text/plain; charset="UTF-8"
To: 9front@9front.org
From: "chötrin." <chotrin@posteo.net>
Date: Mon, 26 Apr 2021 23:40:23 +0000
In-Reply-To: <7A5D7DAF-4C1D-42FF-9570-9B8F7F685A8D@me.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
List-ID: <9front.9front.org>
List-Help: <http://lists.9front.org>
X-Glyph: ➈
X-Bullshit: service dependency markup-oriented solution 
Subject: Re: [9front] Getting Started with Kernel Development?
Reply-To: 9front@9front.org
Precedence: bulk

Quoth Daniel Morandini <danielmorandini@me.com>:
> Network boot [2]!
> [...snip...]
> https://www.raspberrypi.org/documentation/hardware/raspberrypi/bootmode=
s/net.md
> http://fqa.9front.org/fqa6.html#6.7

OK, both of these options are AWESOME.  Thank you and hiro so much for
pointing me in this direction.  I'll have to stand up another 9front
box or VM to get my acme feel-goods on while I'm working on this, but
that's so much better than what I thought I'd be doing.

FWIW, I dug up the Raspberry Pi 3B+ schematic [1].  It looks like PWM
is what's tied to the onboard audio output, not I2S.  The PWM register
addresses [2] look like they start at 0x7e20c000 and match the BCM2835
ARM Peripherals spec from earlier.  I've... got my work cut out for
me, but it'll be a learning experience.  :D

Thanks, y'all! I really appreciate it.

ch=C3=B6trin.

[1]: https://www.raspberrypi.org/documentation/hardware/raspberrypi/schem=
atics/rpi_SCH_3bplus_1p0_reduced.pdf
[2]: https://elinux.org/BCM2835_registers