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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D8218C433EF for ; Thu, 20 Jan 2022 15:33:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1376697AbiATPdw (ORCPT ); Thu, 20 Jan 2022 10:33:52 -0500 Received: from mail-108-mta11.mxroute.com ([136.175.108.11]:33777 "EHLO mail-108-mta11.mxroute.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1376666AbiATPdr (ORCPT ); Thu, 20 Jan 2022 10:33:47 -0500 Received: from filter004.mxroute.com ([149.28.56.236] filter004.mxroute.com) (Authenticated sender: mN4UYu2MZsgR) by mail-108-mta11.mxroute.com (ZoneMTA) with ESMTPSA id 17e781a9fcb000bdf2.004 for (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES128-GCM-SHA256); Thu, 20 Jan 2022 15:28:37 +0000 X-Zone-Loop: 8b04c47f0568cd3a1f4ee070b5f323d3a2297cbb00ea X-Originating-IP: [149.28.56.236] DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=ds0.me; s=x ; h=Content-Transfer-Encoding:MIME-Version:Message-Id:Date:Subject:Cc:To:From :Sender:Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: References:List-Id:List-Help:List-Unsubscribe:List-Subscribe:List-Post: List-Owner:List-Archive; bh=d4rlcBSsDMSlADxswOGFTDUxcitWqo4M6bUPgSom6w0=; b=Y cBI97RpG7pM4ucvHjBwkZMoxkSbQEsL/zRDaAqKe8oCW+Xjm+WeWmZPxE6+dojhEap9vQkDPhmlug IipZOJ5XutXwm2Y4Plz6ZZHD6oHxwrmva0CqGNz6S/1Yv/X2x9LAR+kDpXoz6KLbEESIP9X090zb/ HZH6cHmNYSnExDT2fi8uv4m/fNYHNij6fNQc06E031lSjSgpPG8S8TvVbiZ7Ny+jDRqzAYYaiPQw0 f//4DRDFnwqx5jII50eEtWrQru4lCrI5PK/4rozq5nk9CsDU71ZBwqiGz2Pb7phd1Y3cTjgvf8ChM Ws/+MZE9TJdI5ecpWoLa8rK/EWAbpcJtQ==; From: Myrtle Shah To: linux-riscv@lists.infradead.org, paul.walmsley@sifive.com, palmer@dabbelt.com Cc: linux-kernel@vger.kernel.org Subject: Date: Thu, 20 Jan 2022 15:28:26 +0000 Message-Id: <20220120152828.4089364-1-gatecat@ds0.me> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-AuthUser: dave@ds0.me X-Spam: Yes X-Zone-Spam-Resolution: add header X-Zone-Spam-Status: Yes, score=11, required=15, tests=[ARC_NA=0, SPAM_FLAG=5, FROM_HAS_DN=0, RCPT_COUNT_THREE=0, R_MISSING_CHARSET=2.5, TO_DN_NONE=0, BROKEN_CONTENT_TYPE=1.5, NEURAL_SPAM=0, MID_CONTAINS_FROM=1, RCVD_COUNT_ZERO=0, FROM_EQ_ENVFROM=0, EMPTY_SUBJECT=1, MIME_TRACE=0] Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org These are some initial patches to bugs I found attempting to get a XIP kernel working on hardware: - 32-bit VexRiscv processor - kernel in SPI flash, at 0x00200000 - 16MB of RAM at 0x10000000 - MMU enabled I still have some more debugging to do, but these at least get the kernel as far as initialising the MMU, and I would appreciate feedback if anyone else is working on RISC-V XIP.