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[85.214.62.61]) by mx.google.com with ESMTPS id f2-20020a05651232c200b0048a7843a27bsi8485932lfg.234.2022.08.17.05.46.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 17 Aug 2022 05:46:02 -0700 (PDT) Received-SPF: pass (google.com: domain of u-boot-bounces@lists.denx.de designates 85.214.62.61 as permitted sender) client-ip=85.214.62.61; Authentication-Results: mx.google.com; spf=pass (google.com: domain of u-boot-bounces@lists.denx.de designates 85.214.62.61 as permitted sender) smtp.mailfrom=u-boot-bounces@lists.denx.de; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 40BDE84A43; Wed, 17 Aug 2022 14:44:47 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Received: by phobos.denx.de (Postfix, from userid 109) id D264984A43; Wed, 17 Aug 2022 14:44:44 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-1.2 required=5.0 tests=BAYES_00,SPF_HELO_NONE, SPF_SOFTFAIL,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.2 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by phobos.denx.de (Postfix) with ESMTP id 984B284A3F for ; Wed, 17 Aug 2022 14:44:39 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: phobos.denx.de; spf=fail smtp.mailfrom=sughosh.ganu@linaro.org Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id D91AA1570; Wed, 17 Aug 2022 05:44:39 -0700 (PDT) Received: from a076522.blr.arm.com (a076522.blr.arm.com [10.162.16.44]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 6787D3F67D; Wed, 17 Aug 2022 05:44:35 -0700 (PDT) From: Sughosh Ganu To: u-boot@lists.denx.de Cc: Heinrich Schuchardt , Ilias Apalodimas , Takahiro Akashi , Patrick Delaunay , Patrice Chotard , Simon Glass , Bin Meng , Tom Rini , Etienne Carriere , Michal Simek , Jassi Brar , Sughosh Ganu Subject: [PATCH v8 11/13] mkeficapsule: Add support for generating empty capsules Date: Wed, 17 Aug 2022 18:13:21 +0530 Message-Id: <20220817124323.375968-12-sughosh.ganu@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220817124323.375968-1-sughosh.ganu@linaro.org> References: <20220817124323.375968-1-sughosh.ganu@linaro.org> MIME-Version: 1.0 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 0.103.6 at phobos.denx.de X-Virus-Status: Clean The Dependable Boot specification[1] describes the structure of the firmware accept and revert capsules. These are empty capsules which are used for signalling the acceptance or rejection of the updated firmware by the OS. Add support for generating these empty capsules. [1] - https://git.codelinaro.org/linaro/dependable-boot/mbfw/uploads/6f7ddfe3be24e18d4319e108a758d02e/mbfw.pdf Signed-off-by: Sughosh Ganu --- Changes since V7: * Modify the logic to check the setting of both -A and -R options being passed to the tool, as suggested by Ilias. doc/mkeficapsule.1 | 29 +++++++++---- tools/eficapsule.h | 8 ++++ tools/mkeficapsule.c | 96 ++++++++++++++++++++++++++++++++++++++++---- 3 files changed, 119 insertions(+), 14 deletions(-) diff --git a/doc/mkeficapsule.1 b/doc/mkeficapsule.1 index 09bdc24295..77ca061efd 100644 --- a/doc/mkeficapsule.1 +++ b/doc/mkeficapsule.1 @@ -8,7 +8,7 @@ mkeficapsule \- Generate EFI capsule file for U-Boot .SH SYNOPSIS .B mkeficapsule -.RI [ options "] " image-blob " " capsule-file +.RI [ options ] " " [ image-blob ] " " capsule-file .SH "DESCRIPTION" .B mkeficapsule @@ -23,8 +23,13 @@ Optionally, a capsule file can be signed with a given private key. In this case, the update will be authenticated by verifying the signature before applying. +Additionally, an empty capsule file can be generated for acceptance or +rejection of firmware images by a governing component like an Operating +System. The empty capsules do not require an image-blob input file. + + .B mkeficapsule -takes any type of image files, including: +takes any type of image files when generating non empty capsules, including: .TP .I raw image format is a single binary blob of any type of firmware. @@ -36,18 +41,16 @@ multiple binary blobs in a single capsule file. This type of image file can be generated by .BR mkimage . -.PP -If you want to use other types than above two, you should explicitly -specify a guid for the FMP driver. - .SH "OPTIONS" + .TP .BI "-g\fR,\fB --guid " guid-string Specify guid for image blob type. The format is: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx The first three elements are in little endian, while the rest -is in big endian. +is in big endian. The option must be specified for all non empty and +image acceptance capsules .TP .BI "-i\fR,\fB --index " index @@ -57,6 +60,18 @@ Specify an image index .BI "-I\fR,\fB --instance " instance Specify a hardware instance +.PP +For generation of firmware accept empty capsule +.BR --guid +is mandatory +.TP +.BI "-A\fR,\fB --fw-accept " +Generate a firmware acceptance empty capsule + +.TP +.BI "-R\fR,\fB --fw-revert " +Generate a firmware revert empty capsule + .TP .BR -h ", " --help Print a help message diff --git a/tools/eficapsule.h b/tools/eficapsule.h index d63b831443..072a4b5598 100644 --- a/tools/eficapsule.h +++ b/tools/eficapsule.h @@ -41,6 +41,14 @@ typedef struct { EFI_GUID(0x4aafd29d, 0x68df, 0x49ee, 0x8a, 0xa9, \ 0x34, 0x7d, 0x37, 0x56, 0x65, 0xa7) +#define FW_ACCEPT_OS_GUID \ + EFI_GUID(0x0c996046, 0xbcc0, 0x4d04, 0x85, 0xec, \ + 0xe1, 0xfc, 0xed, 0xf1, 0xc6, 0xf8) + +#define FW_REVERT_OS_GUID \ + EFI_GUID(0xacd58b4b, 0xc0e8, 0x475f, 0x99, 0xb5, \ + 0x6b, 0x3f, 0x7e, 0x07, 0xaa, 0xf0) + /* flags */ #define CAPSULE_FLAGS_PERSIST_ACROSS_RESET 0x00010000 diff --git a/tools/mkeficapsule.c b/tools/mkeficapsule.c index 5f74d23b9e..25bfb39e5b 100644 --- a/tools/mkeficapsule.c +++ b/tools/mkeficapsule.c @@ -29,7 +29,13 @@ static const char *tool_name = "mkeficapsule"; efi_guid_t efi_guid_fm_capsule = EFI_FIRMWARE_MANAGEMENT_CAPSULE_ID_GUID; efi_guid_t efi_guid_cert_type_pkcs7 = EFI_CERT_TYPE_PKCS7_GUID; -static const char *opts_short = "g:i:I:v:p:c:m:dh"; +static const char *opts_short = "g:i:I:v:p:c:m:dhAR"; + +enum { + CAPSULE_NORMAL_BLOB = 0, + CAPSULE_ACCEPT, + CAPSULE_REVERT, +} capsule_type; static struct option options[] = { {"guid", required_argument, NULL, 'g'}, @@ -39,6 +45,8 @@ static struct option options[] = { {"certificate", required_argument, NULL, 'c'}, {"monotonic-count", required_argument, NULL, 'm'}, {"dump-sig", no_argument, NULL, 'd'}, + {"fw-accept", no_argument, NULL, 'A'}, + {"fw-revert", no_argument, NULL, 'R'}, {"help", no_argument, NULL, 'h'}, {NULL, 0, NULL, 0}, }; @@ -55,6 +63,8 @@ static void print_usage(void) "\t-c, --certificate signer's certificate file\n" "\t-m, --monotonic-count monotonic count\n" "\t-d, --dump_sig dump signature (*.p7)\n" + "\t-A, --fw-accept firmware accept capsule, requires GUID, no image blob\n" + "\t-R, --fw-revert firmware revert capsule, takes no GUID, no image blob\n" "\t-h, --help print a help message\n", tool_name); } @@ -564,6 +574,49 @@ void convert_uuid_to_guid(unsigned char *buf) buf[7] = c; } +static int create_empty_capsule(char *path, efi_guid_t *guid, bool fw_accept) +{ + struct efi_capsule_header header = { 0 }; + FILE *f = NULL; + int ret = -1; + efi_guid_t fw_accept_guid = FW_ACCEPT_OS_GUID; + efi_guid_t fw_revert_guid = FW_REVERT_OS_GUID; + efi_guid_t capsule_guid; + + f = fopen(path, "w"); + if (!f) { + fprintf(stderr, "cannot open %s\n", path); + goto err; + } + + capsule_guid = fw_accept ? fw_accept_guid : fw_revert_guid; + + memcpy(&header.capsule_guid, &capsule_guid, sizeof(efi_guid_t)); + header.header_size = sizeof(header); + header.flags = 0; + + header.capsule_image_size = fw_accept ? + sizeof(header) + sizeof(efi_guid_t) : sizeof(header); + + if (write_capsule_file(f, &header, sizeof(header), + "Capsule header")) + goto err; + + if (fw_accept) { + if (write_capsule_file(f, guid, sizeof(*guid), + "FW Accept Capsule Payload")) + goto err; + } + + ret = 0; + +err: + if (f) + fclose(f); + + return ret; +} + /** * main - main entry function of mkeficapsule * @argc: Number of arguments @@ -592,6 +645,7 @@ int main(int argc, char **argv) privkey_file = NULL; cert_file = NULL; dump_sig = 0; + capsule_type = CAPSULE_NORMAL_BLOB; for (;;) { c = getopt_long(argc, argv, opts_short, options, &idx); if (c == -1) @@ -639,22 +693,50 @@ int main(int argc, char **argv) case 'd': dump_sig = 1; break; - case 'h': + case 'A': + if (capsule_type) { + fprintf(stderr, + "Select either of Accept or Revert capsule generation\n"); + exit(1); + } + capsule_type = CAPSULE_ACCEPT; + break; + case 'R': + if (capsule_type) { + fprintf(stderr, + "Select either of Accept or Revert capsule generation\n"); + exit(1); + } + capsule_type = CAPSULE_REVERT; + break; + default: print_usage(); exit(EXIT_SUCCESS); } } /* check necessary parameters */ - if ((argc != optind + 2) || !guid || - ((privkey_file && !cert_file) || - (!privkey_file && cert_file))) { + if ((capsule_type == CAPSULE_NORMAL_BLOB && + ((argc != optind + 2) || !guid || + ((privkey_file && !cert_file) || + (!privkey_file && cert_file)))) || + (capsule_type != CAPSULE_NORMAL_BLOB && + ((argc != optind + 1) || + ((capsule_type == CAPSULE_ACCEPT) && !guid) || + ((capsule_type == CAPSULE_REVERT) && guid)))) { print_usage(); exit(EXIT_FAILURE); } - if (create_fwbin(argv[argc - 1], argv[argc - 2], guid, index, instance, - mcount, privkey_file, cert_file) < 0) { + if (capsule_type != CAPSULE_NORMAL_BLOB) { + if (create_empty_capsule(argv[argc - 1], guid, + capsule_type == CAPSULE_ACCEPT) < 0) { + fprintf(stderr, "Creating empty capsule failed\n"); + exit(EXIT_FAILURE); + } + } else if (create_fwbin(argv[argc - 1], argv[argc - 2], guid, + index, instance, mcount, privkey_file, + cert_file) < 0) { fprintf(stderr, "Creating firmware capsule failed\n"); exit(EXIT_FAILURE); }