The existing options, "--fit" and "--raw," are only used to put a proper GUID in a capsule header, where GUID identifies a particular FMP (Firmware Management Protocol) driver which then would handle the firmware binary in a capsule. In fact, mkeficapsule does the exact same job in creating a capsule file whatever the firmware binary type is.
To prepare for the future extension, the command syntax will be a bit modified to allow users to specify arbitrary GUID for their own FMP driver. OLD: [--fit <image> | --raw <image>] <capsule file> NEW: [--fit | --raw | --guid <guid-string>] <image> <capsule file>
Signed-off-by: AKASHI Takahiro takahiro.akashi@linaro.org --- doc/develop/uefi/uefi.rst | 4 +- doc/mkeficapsule.1 | 26 +++++++++---- tools/mkeficapsule.c | 78 ++++++++++++++++++++++++++++++--------- 3 files changed, 81 insertions(+), 27 deletions(-)
diff --git a/doc/develop/uefi/uefi.rst b/doc/develop/uefi/uefi.rst index 864d61734bee..54fefd76f0f5 100644 --- a/doc/develop/uefi/uefi.rst +++ b/doc/develop/uefi/uefi.rst @@ -367,8 +367,8 @@ and used by the steps highlighted below. --private-key CRT.key \ --certificate CRT.crt \ --index 1 --instance 0 \ - [--fit <FIT image> | --raw <raw image>] \ - <capsule_file_name> + [--fit | --raw | --guid <guid-string] \ + <image_blob> <capsule_file_name>
4. Insert the signature list into a device tree in the following format::
diff --git a/doc/mkeficapsule.1 b/doc/mkeficapsule.1 index 837e09ab451e..312e8a8b3188 100644 --- a/doc/mkeficapsule.1 +++ b/doc/mkeficapsule.1 @@ -5,7 +5,7 @@ mkeficapsule - Generate EFI capsule file for U-Boot
.SH SYNOPSIS .B mkeficapsule -.RB [\fIoptions\fP] " \fIcapsule-file\fP" +.RB [\fIoptions\fP] " \fIimage-blob\fP \fIcapsule-file\fP"
.SH "DESCRIPTION" The @@ -21,7 +21,7 @@ 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.
-\fBmkeficapsule\fP supports two different format of image files: +\fBmkeficapsule\fP takes any type of image files, including: .TP .I raw image format is a single binary blob of any type of firmware. @@ -33,16 +33,28 @@ is the same as used in the new \fIuImage\fP format and allows for multiple binary blobs in a single capsule file. This type of image file can be generated by \fBmkimage\fP.
+.PP +If you want to use other types than above two, you should explicitly +specify a guid for the FMP driver. + .SH "OPTIONS" -One of \fB--fit\fP or \fB--raw\fP option must be specified. +One of \fB--fit\fP, \fB--raw\fP or \fB--guid\fP option must be specified.
.TP -.BI "-f, --fit \fIfit-image-file\fP" -Specify a FIT image file +.BI "-f, --fit +Indicate that the blob is a FIT image file
.TP -.BI "-r, --raw \fIraw-image-file\fP" -Specify a raw image file +.BI "-r, --raw +Indicate that the blob is a raw image file + +.TP +.BI "-g, --guid \fIguid-string\fP" +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.
.TP .BI "-i, --index \fIindex\fP" diff --git a/tools/mkeficapsule.c b/tools/mkeficapsule.c index 5541e4bda894..2e61ee196caf 100644 --- a/tools/mkeficapsule.c +++ b/tools/mkeficapsule.c @@ -14,7 +14,7 @@
#include <sys/stat.h> #include <sys/types.h> - +#include <uuid/uuid.h> #include <linux/kconfig.h> #ifdef CONFIG_TOOLS_LIBCRYPTO #include <openssl/asn1.h> @@ -51,14 +51,15 @@ efi_guid_t efi_guid_image_type_uboot_raw = efi_guid_t efi_guid_cert_type_pkcs7 = EFI_CERT_TYPE_PKCS7_GUID;
#ifdef CONFIG_TOOLS_LIBCRYPTO -static const char *opts_short = "f:r:i:I:v:p:c:m:dh"; +static const char *opts_short = "frg:i:I:v:p:c:m:dh"; #else -static const char *opts_short = "f:r:i:I:v:h"; +static const char *opts_short = "frg:i:I:v:h"; #endif
static struct option options[] = { - {"fit", required_argument, NULL, 'f'}, - {"raw", required_argument, NULL, 'r'}, + {"fit", no_argument, NULL, 'f'}, + {"raw", no_argument, NULL, 'r'}, + {"guid", required_argument, NULL, 'g'}, {"index", required_argument, NULL, 'i'}, {"instance", required_argument, NULL, 'I'}, #ifdef CONFIG_TOOLS_LIBCRYPTO @@ -73,11 +74,12 @@ static struct option options[] = {
static void print_usage(void) { - printf("Usage: %s [options] <output file>\n" + printf("Usage: %s [options] <image blob> <output file>\n" "Options:\n"
- "\t-f, --fit <fit image> new FIT image file\n" - "\t-r, --raw <raw image> new raw image file\n" + "\t-f, --fit FIT image type\n" + "\t-r, --raw raw image type\n" + "\t-g, --guid <guid string> guid for image blob type\n" "\t-i, --index <index> update image index\n" "\t-I, --instance <instance> update hardware instance\n" #ifdef CONFIG_TOOLS_LIBCRYPTO @@ -510,6 +512,37 @@ err_1: return -1; }
+/** + * convert_uuid_to_guid() - convert uuid string to guid string + * @buf: String for UUID + * + * UUID and GUID have the same data structure, but their string + * formats are different due to the endianness. See lib/uuid.c. + * Since uuid_parse() can handle only UUID, this function must + * be called to get correct data for GUID when parsing a string. + * + * The correct data will be returned in @buf. + */ +void convert_uuid_to_guid(unsigned char *buf) +{ + unsigned char c; + + c = buf[0]; + buf[0] = buf[3]; + buf[3] = c; + c = buf[1]; + buf[1] = buf[2]; + buf[2] = c; + + c = buf[4]; + buf[4] = buf[5]; + buf[5] = c; + + c = buf[6]; + buf[6] = buf[7]; + buf[7] = c; +} + /** * main - main entry function of mkeficapsule * @argc: Number of arguments @@ -524,14 +557,13 @@ err_1: */ int main(int argc, char **argv) { - char *file; efi_guid_t *guid; + unsigned char uuid_buf[16]; unsigned long index, instance; uint64_t mcount; char *privkey_file, *cert_file; int c, idx;
- file = NULL; guid = NULL; index = 0; instance = 0; @@ -546,21 +578,31 @@ int main(int argc, char **argv)
switch (c) { case 'f': - if (file) { - printf("Image already specified\n"); + if (guid) { + printf("Image type already specified\n"); return -1; } - file = optarg; guid = &efi_guid_image_type_uboot_fit; break; case 'r': - if (file) { - printf("Image already specified\n"); + if (guid) { + printf("Image type already specified\n"); return -1; } - file = optarg; guid = &efi_guid_image_type_uboot_raw; break; + case 'g': + if (guid) { + printf("Image type already specified\n"); + return -1; + } + if (uuid_parse(optarg, uuid_buf)) { + printf("Wrong guid format\n"); + return -1; + } + convert_uuid_to_guid(uuid_buf); + guid = (efi_guid_t *)uuid_buf; + break; case 'i': index = strtoul(optarg, NULL, 0); break; @@ -596,14 +638,14 @@ int main(int argc, char **argv) }
/* check necessary parameters */ - if ((argc != optind + 1) || !file || + if ((argc != optind + 2) || !guid || ((privkey_file && !cert_file) || (!privkey_file && cert_file))) { print_usage(); return -1; }
- if (create_fwbin(argv[optind], file, guid, index, instance, + if (create_fwbin(argv[argc - 1], argv[argc - 2], guid, index, instance, mcount, privkey_file, cert_file) < 0) { printf("Creating firmware capsule failed\n"); return -1;