From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Fri, 19 Dec 2025 10:07:51 +0100 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 1vWWSl-00D98h-2Q for lore@lore.pengutronix.de; Fri, 19 Dec 2025 10:07:51 +0100 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 1vWWSl-0002yB-32 for lore@pengutronix.de; Fri, 19 Dec 2025 10:07:51 +0100 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=s+hfNp5kkPM4QuTMQ96CIUQqnkghiSvEs7IwhbbdYqQ=; b=SYSF5gzPO+js+uMDGm8jzp+78R OO/PISXb6YCr536eW2GL6XE5vNNLmQq8NeBYbeXrCA1TwRR6lkjnLbfCQiafTdJcyg4DCNig8vqEQ Laeno4tKc5n94qI1KbhgIC5v3V0CHJiIoypZuw6SKRTOzM9wUZQTBqxqqj9FGgC8Cs8SqGkb9cAZd nI1Csl9MLznFj87lXV+EG1N2VExI0vn6hlkYP+bIrauscALL6PaU1fXuslFfN+uPSjyi6Cf6soN5Y uSqcqNmhb1H4S93I0sFc1NoAPQt+JU0qCtuIAginTnsZStluFVbLr1PYgL+AsPPs/slxqVGxqTbE9 EXAw/47w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vWWS9-00000009uJZ-3bOy; Fri, 19 Dec 2025 09:07:13 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vWWS6-00000009uIX-1qjS for barebox@bombadil.infradead.org; Fri, 19 Dec 2025 09:07:10 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Cc:To:In-Reply-To:References: Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Sender:Reply-To:Content-ID:Content-Description; bh=s+hfNp5kkPM4QuTMQ96CIUQqnkghiSvEs7IwhbbdYqQ=; b=QGgaMiJ490xd8kQd6ElLTDTh5b VzPRn6wSt1jD64eWhtdkIIIIxrdIWiWG3rF1YX5IP9uwP6IU/U1kxd0ejxsx1hfnaVrGF7QsJyhTd bkjS/eHvAff1gmyBJJtf4bgDosNgvHjaGMcNN2t4ovbuvPNHuKxRGIzEqJTTSp+5P+mmXj2gHkssq URFtiOnpegMNdjO5eNiyCv+u8FCNFxqhR2DeAtVA93mU3cJqw9asPPmQ29h0AvXA9/UAbK8AkIXPI HCiVRlUf4ZJ1fWhag0ZRaM08bsBnoN6JDXHgZaeTR0UKOptlKN+b5ModiqzHF8g/1T5okFym2J916 TXpdP7Lg==; Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by desiato.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vWVaa-0000000AS4m-2wQr for barebox@lists.infradead.org; Fri, 19 Dec 2025 08:11:54 +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 1vWWS1-0002hO-Df; Fri, 19 Dec 2025 10:07:05 +0100 From: Fabian Pflug Date: Fri, 19 Dec 2025 10:06:58 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20251219-v2025-11-0-topic-imx6-field-return-v2-4-2696ac61ae2d@pengutronix.de> References: <20251219-v2025-11-0-topic-imx6-field-return-v2-0-2696ac61ae2d@pengutronix.de> In-Reply-To: <20251219-v2025-11-0-topic-imx6-field-return-v2-0-2696ac61ae2d@pengutronix.de> To: Marco Felsch , BAREBOX 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-20251219_081153_172043_52BB9F3A X-CRM114-Status: GOOD ( 16.16 ) 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=-3.0 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH v2 4/4] commands: hab: extend by field_return fuse burn 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) Extend hab command with an additional parameter to burn the field return fuse. Since there is now a convenient way to burn the field return fuse, give a hint at the Kconfig option about this, as it already describes what to do in order to burn the fuse to make it complete. Signed-off-by: Fabian Pflug --- arch/arm/mach-imx/Kconfig | 6 +++++- commands/hab.c | 24 ++++++++++++++++++++---- 2 files changed, 25 insertions(+), 5 deletions(-) diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig index 5f50d1a823..5fea0bbbca 100644 --- a/arch/arm/mach-imx/Kconfig +++ b/arch/arm/mach-imx/Kconfig @@ -926,13 +926,17 @@ config HABV4_CSF_UNLOCK_UID feature. This value must match the per device UNIQUE_ID fuses. The below example shows the expected format. The UNIQUE_ID is - queried by Linux via: + printed during boot by barebox: + i.MX___ unique ID: 7766554433221100 + or it can be queried by Linux via: - cat /sys/devices/soc0/serial_number 7766554433221100 So this value have to be set: - 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77 + Afterwards, the `hab -p -r` command can be used to burn the fuse. + config HABV4_IMG_CRT_PEM string "Path to IMG certificate" default "../crts/IMG1_1_sha256_4096_65537_v3_usr_crt.pem" diff --git a/commands/hab.c b/commands/hab.c index 8ae943a4c8..1e168af4b9 100644 --- a/commands/hab.c +++ b/commands/hab.c @@ -16,9 +16,9 @@ static int do_hab(int argc, char *argv[]) char *srkhashfile = NULL, *srkhash = NULL; unsigned flags = 0; u8 srk[SRK_HASH_SIZE]; - int lockdown = 0, info = 0; + int lockdown = 0, info = 0, field_return = 0; - while ((opt = getopt(argc, argv, "s:fpx:li")) > 0) { + while ((opt = getopt(argc, argv, "s:fpx:lir")) > 0) { switch (opt) { case 's': srkhashfile = optarg; @@ -38,12 +38,15 @@ static int do_hab(int argc, char *argv[]) case 'i': info = 1; break; + case 'r': + field_return = 1; + break; default: return COMMAND_ERROR_USAGE; } } - if (!info && !lockdown && !srkhashfile && !srkhash) { + if (!info && !lockdown && !srkhashfile && !srkhash && !field_return) { printf("Nothing to do\n"); return COMMAND_ERROR_USAGE; } @@ -94,7 +97,19 @@ static int do_hab(int argc, char *argv[]) printf("Device successfully locked down\n"); } - return 0; + if (field_return) { + ret = imx_hab_field_return(flags & IMX_SRK_HASH_WRITE_PERMANENT); + if (ret == -EINVAL && IS_ENABLED(CONFIG_HABV4_CSF_UNLOCK_FIELD_RETURN)) + printf("Field-return burn failed, check HABV4_CSF_UNLOCK_UID!\n"); + else if (ret == -EINVAL && !IS_ENABLED(CONFIG_HABV4_CSF_UNLOCK_FIELD_RETURN)) + printf("Field-return burn failed because CONFIG_HABV4_CSF_UNLOCK_FIELD_RETURN=n\n"); + else if (ret) + printf("Field-return burn failed\n"); + else + printf("Field return fuse successfully burnt\n"); + } + + return ret; } BAREBOX_CMD_HELP_START(hab) @@ -105,6 +120,7 @@ BAREBOX_CMD_HELP_OPT ("-x ", "Burn Super Root Key hash from hex string" BAREBOX_CMD_HELP_OPT ("-i", "Print HAB info") BAREBOX_CMD_HELP_OPT ("-f", "Force. Write even when a key is already written") BAREBOX_CMD_HELP_OPT ("-l", "Lockdown device. Dangerous! After executing only signed images can be booted") +BAREBOX_CMD_HELP_OPT ("-r", "Field Return. Dangerous! After executing signed images are disabled forever.") BAREBOX_CMD_HELP_OPT ("-p", "Permanent. Really burn fuses. Be careful!") BAREBOX_CMD_HELP_END -- 2.47.3