From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Tue, 21 Apr 2026 12:30:08 +0200 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1wF8Mq-00EgV9-0n for lore@lore.pengutronix.de; Tue, 21 Apr 2026 12:30:08 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1wF8Mp-0006hp-A5 for lore@pengutronix.de; Tue, 21 Apr 2026 12:30:08 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References :Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=fnWthE2NbvCx4BG8cJ/DJ2vqRkSXA78ADiY/x6ffiws=; b=vqq+aLBfNvEDXu+eQk9TPwrkFp k//egGAzSg/PLK9pz8QTkDVKVLF3UX1MJyg21+RmEZeq7TNZ/BDGZ1m4erYFTYU34m5NjomnoGOja 0xC/guyH6hCRQ7Hbkum6f3huN/A2kQids1GG/JWDS2SZ8M7giWxtRWXe1ATqNZyVsOiMFLS6C22as UIzs0Tri01Gz/8HUnxQi47VkiljuPOY1I2EPuuMiO61AKkhMyZPiYUpwansM5cZx7SDxYLS6gSA3e kKW08HklWO8ljDWxGKIqD1V9CoeRE2K/aSsYIa5IdlCz619fPcEz74GiUS0gU9mduSko6iE1ZHaHo U5kfEThA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wF8MN-00000008REA-2MeQ; Tue, 21 Apr 2026 10:29:39 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wF8MK-00000008RBd-11jg for barebox@lists.infradead.org; Tue, 21 Apr 2026 10:29:37 +0000 Received: from dude06.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::5c]) by metis.whiteo.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1wF8MI-0006MC-Pl; Tue, 21 Apr 2026 12:29:34 +0200 From: Fabian Pflug Date: Tue, 21 Apr 2026 12:29:36 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260421-v2026-02-0-topic-sconfig_console-v8-7-261cdfc6b0da@pengutronix.de> References: <20260421-v2026-02-0-topic-sconfig_console-v8-0-261cdfc6b0da@pengutronix.de> In-Reply-To: <20260421-v2026-02-0-topic-sconfig_console-v8-0-261cdfc6b0da@pengutronix.de> To: BAREBOX , Sascha Hauer Cc: Fabian Pflug X-Mailer: b4 0.14.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260421_032936_352194_BDED9483 X-CRM114-Status: GOOD ( 15.83 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-3.1 required=4.0 tests=AWL,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH v8 7/7] security: kernel_pinctrl: fixup pinctrl in kernel dts X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) Going through the kernel dts and replacing barebox,policy-- with and with old_ if a policy pinctrl has been found in order to change pinctrl not only for barebox, but also for kernel when booting with security profiles. Signed-off-by: Fabian Pflug --- security/Makefile | 1 + security/kernel_pinctrl.c | 73 +++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 74 insertions(+) diff --git a/security/Makefile b/security/Makefile index 510fe5af65..52d9683d83 100644 --- a/security/Makefile +++ b/security/Makefile @@ -2,6 +2,7 @@ obj-$(CONFIG_SECURITY_POLICY) += policy.o obj-$(CONFIG_SECURITY_POLICY_NAMES) += sconfig_names.o +obj-$(CONFIG_SECURITY_POLICY_PINCTRL) += kernel_pinctrl.o obj-$(CONFIG_CRYPTO_KEYSTORE) += keystore.o obj-$(CONFIG_JWT) += jwt.o obj-pbl-$(CONFIG_HAVE_OPTEE) += optee.o diff --git a/security/kernel_pinctrl.c b/security/kernel_pinctrl.c new file mode 100644 index 0000000000..32ace5c79b --- /dev/null +++ b/security/kernel_pinctrl.c @@ -0,0 +1,73 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include +#include +#include +#include +#include + +/* Maximum number of names to be available in pinctrl-names. Best guess.*/ +#define MAX_NAMES 10 + +/** + * Replace 'default' with 'old_default' and 'barebox,policy--default' + * with 'default', if both are found in pinctrl. + * Same for every other name, that starts with barebox,policy-- and + * has another name without the prefix. + */ +static int kernel_of_fixup_pinctrl(struct device_node *root, void *unused) +{ + char *basename; + int base_len; + struct device_node *node; + const struct security_policy *active_policy = security_policy_get_active(); + + if (!active_policy || !active_policy->name) + return -EINVAL; + basename = basprintf("barebox,policy-%s-", active_policy->name); + base_len = strlen(basename); + + list_for_each_entry(node, &root->list, list) { + const char *names[MAX_NAMES]; + int num_read; + bool changed = false; + + num_read = of_property_read_string_array(node, "pinctrl-names", names, MAX_NAMES); + if (num_read == MAX_NAMES) { + int total = of_property_count_strings(node, "pinctrl-names"); + + if (total > MAX_NAMES) + pr_warn("Node %s has more then %d pinctrl names defined. Skipping last %d\n", + node->full_name, MAX_NAMES, total - MAX_NAMES); + } + + for (int i = 0; i < num_read; i++) { + if (strncmp(basename, names[i], base_len) == 0) { + const char *name = names[i] + base_len; + + for (int ii = 0; ii < num_read; ii++) { + if (strcmp(name, names[ii]) == 0) { + /* this never gets freed, + * but we are starting the kernel, + * so there should be no problem. + */ + names[ii] = basprintf("old_%s", name); + names[i] = name; + changed = true; + break; + } + } + } + } + if (changed) + of_property_write_string_array(node, "pinctrl-names", names, num_read); + } + free(basename); + return 0; +} + +static int policy_kernel_pinctrl_fixup_init(void) +{ + return of_register_fixup(kernel_of_fixup_pinctrl, NULL); +} +late_initcall(policy_kernel_pinctrl_fixup_init); -- 2.47.3