From patchwork Tue Jan 30 11:58:46 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dhruva Gole X-Patchwork-Id: 1892799 X-Patchwork-Delegate: trini@ti.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=ti.com header.i=@ti.com header.a=rsa-sha256 header.s=ti-com-17Q1 header.b=d8fsI1zi; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=patchwork.ozlabs.org) Received: from phobos.denx.de (phobos.denx.de [IPv6:2a01:238:438b:c500:173d:9f52:ddab:ee01]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1) server-digest SHA384) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TPNxm13Dwz23dQ for ; Tue, 30 Jan 2024 22:59:24 +1100 (AEDT) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id F0E0F87D58; Tue, 30 Jan 2024 12:59:07 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=pass (p=quarantine dis=none) header.from=ti.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (1024-bit key; unprotected) header.d=ti.com header.i=@ti.com header.b="d8fsI1zi"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id A125487C0B; Tue, 30 Jan 2024 12:59:06 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-3.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_MSPIKE_H2, SPF_HELO_PASS,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.2 Received: from lelv0143.ext.ti.com (lelv0143.ext.ti.com [198.47.23.248]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 250E18796B for ; Tue, 30 Jan 2024 12:59:04 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=pass (p=quarantine dis=none) header.from=ti.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=d-gole@ti.com Received: from fllv0034.itg.ti.com ([10.64.40.246]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id 40UBx29a091480; Tue, 30 Jan 2024 05:59:02 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1706615942; bh=3mx3S2HOJ6vJLe34L3PPYxCTH/QMepeZ0I88IiuFTUw=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=d8fsI1ziVu3JMZ/xm2Wex3sZFTiIDMvKWUdpwPtoRuLp8k2eTsiH57A3EH/967azQ A/1+gg5mBYqZISQVsRh/kkGRMUgk3gyFrROUXOnQIwElfM+RIVcvi87ksHyT1NatUb IJoD0e2V5C5HikfqWKdq4aqcDar0Hz2Kup7n2x7c= Received: from DLEE105.ent.ti.com (dlee105.ent.ti.com [157.170.170.35]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 40UBx2dI028217 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 30 Jan 2024 05:59:02 -0600 Received: from DLEE112.ent.ti.com (157.170.170.23) by DLEE105.ent.ti.com (157.170.170.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23; Tue, 30 Jan 2024 05:59:01 -0600 Received: from lelvsmtp6.itg.ti.com (10.180.75.249) by DLEE112.ent.ti.com (157.170.170.23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23 via Frontend Transport; Tue, 30 Jan 2024 05:59:02 -0600 Received: from dhruva.dhcp.ti.com (dhruva.dhcp.ti.com [172.24.227.68]) by lelvsmtp6.itg.ti.com (8.15.2/8.15.2) with ESMTP id 40UBwqAN035769; Tue, 30 Jan 2024 05:59:00 -0600 From: Dhruva Gole To: CC: , Dhruva Gole , Nishanth Menon , Andrew Davis , Manorit Chawdhry Subject: [PATCH V4 1/2] firmware: ti_sci: fix the secure_hdr in do_xfer Date: Tue, 30 Jan 2024 17:28:46 +0530 Message-ID: <20240130115847.860345-2-d-gole@ti.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240130115847.860345-1-d-gole@ti.com> References: <20240130115847.860345-1-d-gole@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean The ti_sci driver in U-Boot has support for secure_msg as part of it's do_xfer function. This let's U-boot send secure messages during boot up. The protocol to send such secure messages is described as part of the struct ti_sci_secure_msg_hdr. As part of this, there are 2 fields for checksum and reserved that occupy the first 4 bytes of any secure message. This is called as the secure_hdr. As of now, the secure_hdr needs to be 0 init-ed before sending secure messages. However the existing code was never putting the zero-inited vars into the secure_buf, leading to possibility of the first 4 bytes of secure_buf being possibly garbage. Fix this by initialising the secure_hdr itself to the secure_buf location, thus when we make secure_hdr members 0, it automatically ensures the first 4 bytes of secure_buf are 0. Fixes: 32cd25128bd849 ("firmware: Add basic support for TI System Control Interface (TI SCI)") Cc: Nishanth Menon Cc: Andrew Davis Cc: Manorit Chawdhry Signed-off-by: Dhruva Gole Reviewed-by: Nishanth Menon --- drivers/firmware/ti_sci.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/firmware/ti_sci.c b/drivers/firmware/ti_sci.c index 6e9f93e9a302..49d2696a6d09 100644 --- a/drivers/firmware/ti_sci.c +++ b/drivers/firmware/ti_sci.c @@ -236,21 +236,21 @@ static int ti_sci_do_xfer(struct ti_sci_info *info, { struct k3_sec_proxy_msg *msg = &xfer->tx_message; u8 secure_buf[info->desc->max_msg_size]; - struct ti_sci_secure_msg_hdr secure_hdr; + struct ti_sci_secure_msg_hdr *secure_hdr = (struct ti_sci_secure_msg_hdr *)secure_buf; int ret; if (info->is_secure) { /* ToDo: get checksum of the entire message */ - secure_hdr.checksum = 0; - secure_hdr.reserved = 0; - memcpy(&secure_buf[sizeof(secure_hdr)], xfer->tx_message.buf, + secure_hdr->checksum = 0; + secure_hdr->reserved = 0; + memcpy(&secure_buf[sizeof(struct ti_sci_secure_msg_hdr)], xfer->tx_message.buf, xfer->tx_message.len); xfer->tx_message.buf = (u32 *)secure_buf; - xfer->tx_message.len += sizeof(secure_hdr); + xfer->tx_message.len += sizeof(struct ti_sci_secure_msg_hdr); if (xfer->rx_len) - xfer->rx_len += sizeof(secure_hdr); + xfer->rx_len += sizeof(struct ti_sci_secure_msg_hdr); } /* Send the message */