From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 93D71C28CBC for ; Sat, 9 May 2020 08:01:07 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3C2652184D for ; Sat, 9 May 2020 08:01:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="tENHITOp" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3C2652184D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 49K04w2gm1zDqjd for ; Sat, 9 May 2020 18:01:04 +1000 (AEST) Received: from ozlabs.org (bilbo.ozlabs.org [IPv6:2401:3900:2:1::2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 49K02g0L28zDqhT for ; Sat, 9 May 2020 17:59:07 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=tENHITOp; dkim-atps=neutral Received: from ozlabs.org (bilbo.ozlabs.org [IPv6:2401:3900:2:1::2]) by bilbo.ozlabs.org (Postfix) with ESMTP id 49K02f5Vf3z8tGy for ; Sat, 9 May 2020 17:59:06 +1000 (AEST) Received: by ozlabs.org (Postfix) id 49K02f4X6qz9sSt; Sat, 9 May 2020 17:59:06 +1000 (AEST) Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=gmail.com (client-ip=2607:f8b0:4864:20::642; helo=mail-pl1-x642.google.com; envelope-from=npiggin@gmail.com; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=tENHITOp; dkim-atps=neutral Received: from mail-pl1-x642.google.com (mail-pl1-x642.google.com [IPv6:2607:f8b0:4864:20::642]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 49K02f3bNLz9sSc; Sat, 9 May 2020 17:59:06 +1000 (AEST) Received: by mail-pl1-x642.google.com with SMTP id f15so1752699plr.3; Sat, 09 May 2020 00:59:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:subject:to:cc:references:in-reply-to:mime-version :message-id:content-transfer-encoding; bh=gRd36KDB/iRwVs0k/ovAO6MuzA9nrtLsKZZjdOoWw/c=; b=tENHITOpFOah3/6OZ96t37NbAK34SeEdT3DzUkhoW4PnyR8harIDIT10+38Bzz6mnE H1UkkxaM77xo8OlvXg1GufHerAQPc2XQoKTPYv9OX/kRIuqkUGfszuqbKCF5SNbxHjwa 8bISYaNHjIP78/rQrp0jHJpjwWgfGHaB9l9IyCninjgoY42kY8lUk2uXp6EXrGb19w4Y wvCXiBsb42jV1vK8zoxsn8aVvmHjQulXPRxJsXbRq9iZcgc4fMUfYJS3UD4h8y/RGkij K/Q5r5GptXSJ8TxrJYP7QfQVKf6UuwPt8c1Whxt1HCV4eLE9YJksIuEQF1qknPGQQ+iS VzLg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:subject:to:cc:references:in-reply-to :mime-version:message-id:content-transfer-encoding; bh=gRd36KDB/iRwVs0k/ovAO6MuzA9nrtLsKZZjdOoWw/c=; b=Bxj6YLqq8zXktsFeOMnAifkQLP69WXTggF4E2IB5oHh099xWBdx/4z97cdIrFb0Atb xiQT6/6Ks8CoyUtIaxLGGv717e/HRB19cpM+2acKqZoTj6ZUP9JUAtlzECUj9fY/llnq Zt5hB+YEshLyNymeLxdCHDq7ZVTgXbvutVfU7SB5qs0cT9C2j2GpFuHWVCZnEz8733GQ hwAyaDpjc9tSAp5Td5CxC3/oDTvEt69P+Kcmjzj2Bf02EeQ0WX4u+YTht7xptgykNRwS 7y5wLYmUlHcdgIAgOXBznVnjjIdI4+PWiix+XXP8CoLcl2C0aLEDIKmatp/ysxID1JF6 kXAw== X-Gm-Message-State: AGi0PuaT9ZS275FGxavUMHb/VeIPyF9K4dTiIB4NQ6N0uelRKW9/fY3M EBTRyUxNb+neOELiPa2gRpcr3wlY X-Google-Smtp-Source: APiQypLKhYjG6BfA73DPjCWtDwRIFQf4z4YT2MSK6/bo6EwHzYa07ppUz6yNZaSMKj7IUCClbRMf/w== X-Received: by 2002:a17:90b:2385:: with SMTP id mr5mr10733747pjb.172.1589011143316; Sat, 09 May 2020 00:59:03 -0700 (PDT) Received: from localhost (61-68-214-199.tpgi.com.au. [61.68.214.199]) by smtp.gmail.com with ESMTPSA id 128sm3246126pfd.114.2020.05.09.00.59.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 09 May 2020 00:59:02 -0700 (PDT) Date: Sat, 09 May 2020 17:58:57 +1000 From: Nicholas Piggin Subject: Re: [PATCH RFC 2/4] powerpc: Add Microwatt platform To: Anton Blanchard , Benjamin Herrenschmidt , linuxppc-dev@ozlabs.org, Michael Neuling , Paul Mackerras References: <20200509050103.GA1464954@thinks.paulus.ozlabs.org> <20200509050255.GC1464954@thinks.paulus.ozlabs.org> In-Reply-To: <20200509050255.GC1464954@thinks.paulus.ozlabs.org> MIME-Version: 1.0 Message-Id: <1589010752.ygtog0nhjc.astroid@bobo.none> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alistair Popple Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Excerpts from Paul Mackerras's message of May 9, 2020 3:02 pm: > Microwatt is a FPGA-based implementation of the Power ISA. It > currently only implements little-endian 64-bit mode, and does > not (yet) support SMP. >=20 > This adds a new machine type to support FPGA-based SoCs with a > Microwatt core. Very cool! Would there be any point sharing this with the "naked metal" platform=20 Alistair has for booting POWER in L3 without OPAL? Or is it easy enough=20 to have a several different simple 64s platforms? I have an HPT conditional compile patch and a few other diet Kconfig things I'll now be better justified to try get merged :) Thanks, Nick