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Date: Mon, 8 Jan 2018 15:31:05 +0100
From: Christoph Hellwig <hch@lst.de>
Message-ID: <20180108143105.GC10273@lst.de>
References: <1514940265-18093-1-git-send-email-mjc@sifive.com>
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Subject: Re: [Qemu-devel] [PATCH v1 11/21] RISC-V HTIF Console
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To: Michael Clark <mjc@sifive.com>
Cc: qemu-devel@nongnu.org, Bastian Koppelmann <kbastian@mail.uni-paderborn.de>, Sagar Karandikar <sagark@eecs.berkeley.edu>

On Wed, Jan 03, 2018 at 01:44:15PM +1300, Michael Clark wrote:
> HTIF (Host Target Interface) provides console emulation for QEMU. HTIF
> allows identical copies of BBL (Berkeley Boot Loader) and linux to run
> on both Spike and QEMU. BBL provides HTIF console access via the
> SBI (Supervisor Binary Interface) and the linux kernel SBI console.

Do you have a current spec for the SBI?  I haven't been able to find
any current reference since it was removed from the privileged spec.