From patchwork Mon Sep 23 03:56:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Huber X-Patchwork-Id: 13809269 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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 944C0CF9C6E for ; Mon, 23 Sep 2024 03:57:29 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ssaBp-0006PT-Pc; Sun, 22 Sep 2024 23:56:45 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ssaBo-0006Mo-2R; Sun, 22 Sep 2024 23:56:44 -0400 Received: from dedi548.your-server.de ([85.10.215.148]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ssaBm-00013D-3Y; Sun, 22 Sep 2024 23:56:43 -0400 Received: from sslproxy04.your-server.de ([78.46.152.42]) by dedi548.your-server.de with esmtpsa (TLS1.3) tls TLS_AES_256_GCM_SHA384 (Exim 4.96.2) (envelope-from ) id 1ssaBg-0004WH-2f; Mon, 23 Sep 2024 05:56:37 +0200 Received: from [82.100.198.138] (helo=mail.embedded-brains.de) by sslproxy04.your-server.de with esmtpsa (TLS1.3) tls TLS_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1ssaBh-0002tv-0Y; Mon, 23 Sep 2024 05:56:36 +0200 Received: from localhost (localhost [127.0.0.1]) by mail.embedded-brains.de (Postfix) with ESMTP id 0CB27480199; Mon, 23 Sep 2024 05:56:36 +0200 (CEST) Received: from mail.embedded-brains.de ([127.0.0.1]) by localhost (zimbra.eb.localhost [127.0.0.1]) (amavis, port 10032) with ESMTP id BHj_8TPmRsSL; Mon, 23 Sep 2024 05:56:35 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by mail.embedded-brains.de (Postfix) with ESMTP id B4F6F48006F; Mon, 23 Sep 2024 05:56:35 +0200 (CEST) X-Virus-Scanned: amavis at zimbra.eb.localhost Received: from mail.embedded-brains.de ([127.0.0.1]) by localhost (zimbra.eb.localhost [127.0.0.1]) (amavis, port 10026) with ESMTP id fwJZ0RC4QexY; Mon, 23 Sep 2024 05:56:35 +0200 (CEST) Received: from zimbra.eb.localhost (unknown [192.168.96.242]) by mail.embedded-brains.de (Postfix) with ESMTPSA id 86FED480199; Mon, 23 Sep 2024 05:56:35 +0200 (CEST) From: Sebastian Huber To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org Subject: [PATCH 1/2] hw/arm/boot: Use hooks if PSCI is disabled Date: Mon, 23 Sep 2024 05:56:31 +0200 Message-Id: <20240923035632.81304-2-sebastian.huber@embedded-brains.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20240923035632.81304-1-sebastian.huber@embedded-brains.de> References: <20240923035632.81304-1-sebastian.huber@embedded-brains.de> MIME-Version: 1.0 X-Authenticated-Sender: smtp-embedded@poldi-networks.de X-Virus-Scanned: Clear (ClamAV 1.0.5/27406/Sun Sep 22 10:30:52 2024) Received-SPF: pass client-ip=85.10.215.148; envelope-from=sebastian.huber@embedded-brains.de; helo=dedi548.your-server.de X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org In arm_load_kernel(), use the secondary boot hooks provided by the platform if PSCI is disabled also while booting a non-Linux kernel. While booting Linux with PSCI disabled, provide default hooks if needed. In do_cpu_reset(), use the secondary CPU reset hook provided by the platform for resetting a non-Linux kernel. This change allows a more accurate simulation of the platform reset behaviour. Signed-off-by: Sebastian Huber --- hw/arm/boot.c | 30 +++++++++++++++++++----------- 1 file changed, 19 insertions(+), 11 deletions(-) diff --git a/hw/arm/boot.c b/hw/arm/boot.c index 5301d8d318..cad7f41f46 100644 --- a/hw/arm/boot.c +++ b/hw/arm/boot.c @@ -720,7 +720,11 @@ static void do_cpu_reset(void *opaque) g_assert_not_reached(); } - cpu_set_pc(cs, entry); + if (cs == first_cpu || !info->secondary_cpu_reset_hook) { + cpu_set_pc(cs, entry); + } else { + info->secondary_cpu_reset_hook(cpu, info); + } } else { /* * If we are booting Linux then we might need to do so at: @@ -1299,20 +1303,24 @@ void arm_load_kernel(ARMCPU *cpu, MachineState *ms, struct arm_boot_info *info) } } - if (info->psci_conduit == QEMU_PSCI_CONDUIT_DISABLED && - info->is_linux && nb_cpus > 1) { + if (info->psci_conduit == QEMU_PSCI_CONDUIT_DISABLED && nb_cpus > 1) { /* - * We're booting Linux but not using PSCI, so for SMP we need - * to write a custom secondary CPU boot loader stub, and arrange - * for the secondary CPU reset to make the accompanying initialization. + * We're not using PSCI, so for SMP we may need to write a custom + * secondary CPU boot loader stub, and arrange for the secondary CPU + * reset to make the accompanying initialization. */ - if (!info->secondary_cpu_reset_hook) { - info->secondary_cpu_reset_hook = default_reset_secondary; + if (info->is_linux) { + /* For the Linux boot, use default hooks if needed */ + if (!info->secondary_cpu_reset_hook) { + info->secondary_cpu_reset_hook = default_reset_secondary; + } + if (!info->write_secondary_boot) { + info->write_secondary_boot = default_write_secondary; + } } - if (!info->write_secondary_boot) { - info->write_secondary_boot = default_write_secondary; + if (info->write_secondary_boot) { + info->write_secondary_boot(cpu, info); } - info->write_secondary_boot(cpu, info); } else { /* * No secondary boot stub; don't use the reset hook that would