From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ozlabs.org (ozlabs.org [IPv6:2401:3900:2:1::2]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3v6wc95TXXzDqRB for ; Tue, 24 Jan 2017 15:46:01 +1100 (AEDT) From: Michael Ellerman To: Darren Stevens Cc: linuxppc-dev@lists.ozlabs.org, Pat Wall , rtd@a-eon.com, aperez@alexperez.com, Christian Zigotzky Subject: Re: powerpc/pasemi/nemo: Fix low memory values for boot. In-Reply-To: <497a17344e3.4cea1c9d@auth.smtp.1and1.co.uk> References: <49760dd82b0.759fd78a@auth.smtp.1and1.co.uk> <87h94qb8u2.fsf@concordia.ellerman.id.au> <497a17344e3.4cea1c9d@auth.smtp.1and1.co.uk> Date: Tue, 24 Jan 2017 15:46:01 +1100 Message-ID: <87wpdl9iba.fsf@concordia.ellerman.id.au> MIME-Version: 1.0 Content-Type: text/plain List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Darren Stevens writes: > On 23/01/2017, Michael Ellerman wrote: >>> Clearing the long long at addr 8 has been shown to fix this, so >>> add an initalisation to head_64.S so the system will boot. >> >> I'd really prefer it if someone could tell me why we need to clear it. >> But I assume no one knows? ... > > I took a long look today and traced the problem the 'prom_find_boot_cpu' and a > much better patch will follow. Awesome work, thanks. cheers