From: Masami Hiramatsu masami.hiramatsu@linaro.org
Add 'mkfwumdata' tool to generate FWU metadata image for the meta-data partition to be used in A/B Update imeplementation.
Signed-off-by: Masami Hiramatsu masami.hiramatsu@linaro.org Signed-off-by: Sughosh Ganu sughosh.ganu@linaro.org Signed-off-by: Jassi Brar jaswinder.singh@linaro.org --- tools/Kconfig | 9 ++ tools/Makefile | 4 + tools/mkfwumdata.c | 323 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 336 insertions(+) create mode 100644 tools/mkfwumdata.c
diff --git a/tools/Kconfig b/tools/Kconfig index 539708f277..6e23f44d55 100644 --- a/tools/Kconfig +++ b/tools/Kconfig @@ -157,4 +157,13 @@ config LUT_SEQUENCE help Look Up Table Sequence
+config TOOLS_MKFWUMDATA + bool "Build mkfwumdata command" + default y if FWU_MULTI_BANK_UPDATE + help + This command allows users to create a raw image of the FWU + metadata for initial installation of the FWU multi bank + update on the board. The installation method depends on + the platform. + endmenu diff --git a/tools/Makefile b/tools/Makefile index c479d3cb4c..2fe2910fa4 100644 --- a/tools/Makefile +++ b/tools/Makefile @@ -254,6 +254,10 @@ HOSTLDLIBS_mkeficapsule += \ $(shell pkg-config --libs uuid 2> /dev/null || echo "-luuid") hostprogs-$(CONFIG_TOOLS_MKEFICAPSULE) += mkeficapsule
+mkfwumdata-objs := mkfwumdata.o lib/crc32.o +HOSTLDLIBS_mkfwumdata += -luuid +hostprogs-$(CONFIG_TOOLS_MKFWUMDATA) += mkfwumdata + # We build some files with extra pedantic flags to try to minimize things # that won't build on some weird host compiler -- though there are lots of # exceptions for files that aren't complaint. diff --git a/tools/mkfwumdata.c b/tools/mkfwumdata.c new file mode 100644 index 0000000000..35ee540cde --- /dev/null +++ b/tools/mkfwumdata.c @@ -0,0 +1,323 @@ +// SPDX-License-Identifier: GPL-2.0+ + +#include <errno.h> +#include <getopt.h> +#include <limits.h> +#include <stdio.h> +#include <stdint.h> +#include <stdlib.h> +#include <string.h> +#include <u-boot/crc.h> +#include <unistd.h> +#include <uuid/uuid.h> + +/* This will dynamically allocate the fwu_mdata */ +#define CONFIG_FWU_NUM_BANKS 0 +#define CONFIG_FWU_NUM_IMAGES_PER_BANK 0 + +/* Since we can not include fwu.h, redefine version here. */ +#define FWU_MDATA_VERSION 1 + +typedef uint8_t u8; +typedef int16_t s16; +typedef uint16_t u16; +typedef uint32_t u32; +typedef uint64_t u64; + +#include <fwu_mdata.h> + +/* TODO: Endianess conversion may be required for some arch. */ + +static const char *opts_short = "b:i:a:p:gh"; + +static struct option options[] = { + {"banks", required_argument, NULL, 'b'}, + {"images", required_argument, NULL, 'i'}, + {"guid", required_argument, NULL, 'g'}, + {"active-bank", required_argument, NULL, 'a'}, + {"previous-bank", required_argument, NULL, 'p'}, + {"help", no_argument, NULL, 'h'}, + {NULL, 0, NULL, 0}, +}; + +static void print_usage(void) +{ + fprintf(stderr, "Usage: mkfwumdata [options] <UUIDs list> <output file>\n"); + fprintf(stderr, "Options:\n" + "\t-i, --images <num> Number of images\n" + "\t-b, --banks <num> Number of banks\n" + "\t-a, --active-bank <num> Active bank\n" + "\t-p, --previous-bank <num> Previous active bank\n" + "\t-g, --guid Use GUID instead of UUID\n" + "\t-h, --help print a help message\n" + ); + fprintf(stderr, " UUIDs list syntax:\n" + "\t <location uuid>,<image type uuid>,<images uuid list>\n" + "\t images uuid list syntax:\n" + "\t\t img_uuid_00,img_uuid_01...img_uuid_0b,\n" + "\t\t img_uuid_10,img_uuid_11...img_uuid_1b,\n" + "\t\t ...,\n" + "\t\t img_uuid_i0,img_uuid_i1...img_uuid_ib,\n" + "\t\t where 'b' and 'i' are number of banks and numbder of images in a bank respectively.\n" + ); +} + +static int active_bank = 0; +static int previous_bank = INT_MAX; /* unset */ +static bool __use_guid = false; + +struct fwu_mdata_object { + size_t images; + size_t banks; + size_t size; + struct fwu_mdata *mdata; +}; + +struct fwu_mdata_object *fwu_alloc_mdata(size_t images, size_t banks) +{ + struct fwu_mdata_object *mobj; + + mobj = calloc(1, sizeof(*mobj)); + if (!mobj) + return NULL; + + mobj->size = sizeof(struct fwu_mdata) + + (sizeof(struct fwu_image_entry) + + sizeof(struct fwu_image_bank_info) * banks) * images; + mobj->images = images; + mobj->banks = banks; + + mobj->mdata = calloc(1, mobj->size); + if (!mobj->mdata) { + free(mobj); + return NULL; + } + + return mobj; +} + +struct fwu_image_entry *fwu_get_image(struct fwu_mdata_object *mobj, size_t idx) +{ + size_t offset; + + offset = sizeof(struct fwu_mdata) + + (sizeof(struct fwu_image_entry) + + sizeof(struct fwu_image_bank_info) * mobj->banks) * idx; + + return (struct fwu_image_entry *)((char *)mobj->mdata + offset); +} + +struct fwu_image_bank_info *fwu_get_bank(struct fwu_mdata_object *mobj, + size_t img_idx, size_t bnk_idx) +{ + size_t offset; + + offset = sizeof(struct fwu_mdata) + + (sizeof(struct fwu_image_entry) + + sizeof(struct fwu_image_bank_info) * mobj->banks) * img_idx + + sizeof(struct fwu_image_entry) + + sizeof(struct fwu_image_bank_info) * bnk_idx; + + return (struct fwu_image_bank_info *)((char *)mobj->mdata + offset); +} + +/** + * convert_uuid_to_guid() - convert UUID to GUID + * @buf: UUID binary + * + * UUID and GUID have the same data structure, but their binary + * 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; +} + +int uuid_guid_parse(char *uuidstr, unsigned char *uuid) +{ + int ret; + + ret = uuid_parse(uuidstr, uuid); + if (ret < 0) + return ret; + + if (__use_guid) + convert_uuid_to_guid(uuid); + + return ret; +} + +int fwu_parse_fill_image_uuid(struct fwu_mdata_object *mobj, + size_t idx, char *uuids) +{ + struct fwu_image_entry *image = fwu_get_image(mobj, idx); + struct fwu_image_bank_info *bank; + char *p = uuids, *uuid; + int i; + + if (!image) + return -ENOENT; + + /* Image location UUID */ + uuid = strsep(&p, ","); + if (!uuid) + return -EINVAL; + + if (strcmp(uuid, "0") && + uuid_guid_parse(uuid, (unsigned char *)&image->location_uuid) < 0) + return -EINVAL; + + /* Image type UUID */ + uuid = strsep(&p, ","); + if (!uuid) + return -EINVAL; + + if (uuid_guid_parse(uuid, (unsigned char *)&image->image_type_uuid) < 0) + return -EINVAL; + + /* Fill bank image-UUID */ + for (i = 0; i < mobj->banks; i++) { + bank = fwu_get_bank(mobj, idx, i); + if (!bank) + return -ENOENT; + bank->accepted = 1; + uuid = strsep(&p, ","); + if (!uuid) + return -EINVAL; + + if (strcmp(uuid, "0") && + uuid_guid_parse(uuid, (unsigned char *)&bank->image_uuid) < 0) + return -EINVAL; + } + return 0; +} + +/* Caller must ensure that @uuids[] has @mobj->images entries. */ +int fwu_parse_fill_uuids(struct fwu_mdata_object *mobj, char *uuids[]) +{ + struct fwu_mdata *mdata = mobj->mdata; + int i, ret; + + mdata->version = FWU_MDATA_VERSION; + mdata->active_index = active_bank; + mdata->previous_active_index = previous_bank; + + for (i = 0; i < mobj->images; i++) { + ret = fwu_parse_fill_image_uuid(mobj, i, uuids[i]); + if (ret < 0) + return ret; + } + + mdata->crc32 = crc32(0, (const unsigned char *)&mdata->version, + mobj->size - sizeof(uint32_t)); + + return 0; +} + +int fwu_make_mdata(size_t images, size_t banks, char *uuids[], char *output) +{ + struct fwu_mdata_object *mobj; + FILE *file; + int ret; + + mobj = fwu_alloc_mdata(images, banks); + if (!mobj) + return -ENOMEM; + + ret = fwu_parse_fill_uuids(mobj, uuids); + if (ret < 0) + goto done_make; + + file = fopen(output, "w"); + if (!file) { + ret = -errno; + goto done_make; + } + + ret = fwrite(mobj->mdata, mobj->size, 1, file); + if (ret != mobj->size) + ret = -errno; + else + ret = 0; + + fclose(file); + +done_make: + free(mobj->mdata); + free(mobj); + + return ret; +} + +int main(int argc, char *argv[]) +{ + unsigned long banks = 0, images = 0; + int c, ret; + + do { + c = getopt_long(argc, argv, opts_short, options, NULL); + switch (c) { + case 'h': + print_usage(); + return 0; + case 'b': + banks = strtoul(optarg, NULL, 0); + break; + case 'i': + images = strtoul(optarg, NULL, 0); + break; + case 'g': + __use_guid = true; + break; + case 'p': + previous_bank = strtoul(optarg, NULL, 0); + break; + case 'a': + active_bank = strtoul(optarg, NULL, 0); + break; + } + } while (c != -1); + + if (!banks || !images) { + fprintf(stderr, "Error: The number of banks and images must not be 0.\n"); + return -EINVAL; + } + + /* This command takes UUIDs * images and output file. */ + if (optind + images + 1 != argc) { + fprintf(stderr, "Error: UUID list or output file is not specified or too much.\n"); + print_usage(); + return -ERANGE; + } + + if (previous_bank == INT_MAX) { + /* set to the earlier bank in round-robin scheme */ + previous_bank = active_bank > 0 ? active_bank - 1 : banks - 1; + } + + ret = fwu_make_mdata(images, banks, argv + optind, argv[argc - 1]); + if (ret < 0) + fprintf(stderr, "Error: Failed to parse and write image: %s\n", + strerror(-ret)); + + return ret; +}