diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/Makefile | 6 | ||||
| -rw-r--r-- | tools/kwbimage.c | 744 | ||||
| -rw-r--r-- | tools/kwbimage.h | 37 |
3 files changed, 780 insertions, 7 deletions
diff --git a/tools/Makefile b/tools/Makefile index cefcedf..f5ac631 100644 --- a/tools/Makefile +++ b/tools/Makefile @@ -142,8 +142,12 @@ ifdef CONFIG_SYS_U_BOOT_OFFS HOSTCFLAGS_kwbimage.o += -DCONFIG_SYS_U_BOOT_OFFS=$(CONFIG_SYS_U_BOOT_OFFS) endif +ifneq ($(CONFIG_ARMADA_38X)$(CONFIG_ARMADA_39X),) +HOSTCFLAGS_kwbimage.o += -DCONFIG_KWB_SECURE +endif + # MXSImage needs LibSSL -ifneq ($(CONFIG_MX23)$(CONFIG_MX28)$(CONFIG_FIT_SIGNATURE),) +ifneq ($(CONFIG_MX23)$(CONFIG_MX28)$(CONFIG_ARMADA_38X)$(CONFIG_ARMADA_39X)$(CONFIG_FIT_SIGNATURE),) HOSTLOADLIBES_mkimage += \ $(shell pkg-config --libs libssl libcrypto 2> /dev/null || echo "-lssl -lcrypto") diff --git a/tools/kwbimage.c b/tools/kwbimage.c index 9aa9c74..93797c9 100644 --- a/tools/kwbimage.c +++ b/tools/kwbimage.c @@ -1,30 +1,47 @@ /* * Image manipulator for Marvell SoCs - * supports Kirkwood, Dove, Armada 370, and Armada XP + * supports Kirkwood, Dove, Armada 370, Armada XP, and Armada 38x * * (C) Copyright 2013 Thomas Petazzoni * <thomas.petazzoni@free-electrons.com> * * SPDX-License-Identifier: GPL-2.0+ * - * Not implemented: support for the register headers and secure - * headers in v1 images + * Not implemented: support for the register headers in v1 images */ #include "imagetool.h" #include <limits.h> #include <image.h> +#include <stdarg.h> #include <stdint.h> #include "kwbimage.h" +#ifdef CONFIG_KWB_SECURE +#include <openssl/rsa.h> +#include <openssl/pem.h> +#include <openssl/err.h> +#include <openssl/evp.h> +#endif + static struct image_cfg_element *image_cfg; static int cfgn; +#ifdef CONFIG_KWB_SECURE +static int verbose_mode; +#endif struct boot_mode { unsigned int id; const char *name; }; +/* + * SHA2-256 hash + */ +struct hash_v1 { + uint8_t hash[32]; +}; + struct boot_mode boot_modes[] = { { 0x4D, "i2c" }, { 0x5A, "spi" }, @@ -70,6 +87,16 @@ enum image_cfg_type { IMAGE_CFG_DATA, IMAGE_CFG_BAUDRATE, IMAGE_CFG_DEBUG, + IMAGE_CFG_KAK, + IMAGE_CFG_CSK, + IMAGE_CFG_CSK_INDEX, + IMAGE_CFG_JTAG_DELAY, + IMAGE_CFG_BOX_ID, + IMAGE_CFG_FLASH_ID, + IMAGE_CFG_SEC_COMMON_IMG, + IMAGE_CFG_SEC_SPECIALIZED_IMG, + IMAGE_CFG_SEC_BOOT_DEV, + IMAGE_CFG_SEC_FUSE_DUMP, IMAGE_CFG_COUNT } type; @@ -88,6 +115,16 @@ static const char * const id_strs[] = { [IMAGE_CFG_DATA] = "DATA", [IMAGE_CFG_BAUDRATE] = "BAUDRATE", [IMAGE_CFG_DEBUG] = "DEBUG", + [IMAGE_CFG_KAK] = "KAK", + [IMAGE_CFG_CSK] = "CSK", + [IMAGE_CFG_CSK_INDEX] = "CSK_INDEX", + [IMAGE_CFG_JTAG_DELAY] = "JTAG_DELAY", + [IMAGE_CFG_BOX_ID] = "BOX_ID", + [IMAGE_CFG_FLASH_ID] = "FLASH_ID", + [IMAGE_CFG_SEC_COMMON_IMG] = "SEC_COMMON_IMG", + [IMAGE_CFG_SEC_SPECIALIZED_IMG] = "SEC_SPECIALIZED_IMG", + [IMAGE_CFG_SEC_BOOT_DEV] = "SEC_BOOT_DEV", + [IMAGE_CFG_SEC_FUSE_DUMP] = "SEC_FUSE_DUMP" }; struct image_cfg_element { @@ -110,6 +147,14 @@ struct image_cfg_element { struct ext_hdr_v0_reg regdata; unsigned int baudrate; unsigned int debug; + const char *key_name; + int csk_idx; + uint8_t jtag_delay; + uint32_t boxid; + uint32_t flashid; + bool sec_specialized_img; + unsigned int sec_boot_dev; + const char *name; }; }; @@ -178,6 +223,32 @@ image_count_options(unsigned int optiontype) return count; } +#if defined(CONFIG_KWB_SECURE) + +static int image_get_csk_index(void) +{ + struct image_cfg_element *e; + + e = image_find_option(IMAGE_CFG_CSK_INDEX); + if (!e) + return -1; + + return e->csk_idx; +} + +static bool image_get_spezialized_img(void) +{ + struct image_cfg_element *e; + + e = image_find_option(IMAGE_CFG_SEC_SPECIALIZED_IMG); + if (!e) + return false; + + return e->sec_specialized_img; +} + +#endif + /* * Compute a 8-bit checksum of a memory area. This algorithm follows * the requirements of the Marvell SoC BootROM specifications. @@ -245,6 +316,493 @@ static uint8_t baudrate_to_option(unsigned int baudrate) } } +#if defined(CONFIG_KWB_SECURE) +static void kwb_msg(const char *fmt, ...) +{ + if (verbose_mode) { + va_list ap; + + va_start(ap, fmt); + vfprintf(stdout, fmt, ap); + va_end(ap); + } +} + +static int openssl_err(const char *msg) +{ + unsigned long ssl_err = ERR_get_error(); + + fprintf(stderr, "%s", msg); + fprintf(stderr, ": %s\n", + ERR_error_string(ssl_err, 0)); + + return -1; +} + +static int kwb_load_rsa_key(const char *keydir, const char *name, RSA **p_rsa) +{ + char path[PATH_MAX]; + RSA *rsa; + FILE *f; + + if (!keydir) + keydir = "."; + + snprintf(path, sizeof(path), "%s/%s.key", keydir, name); + f = fopen(path, "r"); + if (!f) { + fprintf(stderr, "Couldn't open RSA private key: '%s': %s\n", + path, strerror(errno)); + return -ENOENT; + } + + rsa = PEM_read_RSAPrivateKey(f, 0, NULL, ""); + if (!rsa) { + openssl_err("Failure reading private key"); + fclose(f); + return -EPROTO; + } + fclose(f); + *p_rsa = rsa; + + return 0; +} + +static int kwb_load_cfg_key(struct image_tool_params *params, + unsigned int cfg_option, const char *key_name, + RSA **p_key) +{ + struct image_cfg_element *e_key; + RSA *key; + int res; + + *p_key = NULL; + + e_key = image_find_option(cfg_option); + if (!e_key) { + fprintf(stderr, "%s not configured\n", key_name); + return -ENOENT; + } + + res = kwb_load_rsa_key(params->keydir, e_key->key_name, &key); + if (res < 0) { + fprintf(stderr, "Failed to load %s\n", key_name); + return -ENOENT; + } + + *p_key = key; + + return 0; +} + +static int kwb_load_kak(struct image_tool_params *params, RSA **p_kak) +{ + return kwb_load_cfg_key(params, IMAGE_CFG_KAK, "KAK", p_kak); +} + +static int kwb_load_csk(struct image_tool_params *params, RSA **p_csk) +{ + return kwb_load_cfg_key(params, IMAGE_CFG_CSK, "CSK", p_csk); +} + +static int kwb_compute_pubkey_hash(struct pubkey_der_v1 *pk, + struct hash_v1 *hash) +{ + EVP_MD_CTX *ctx; + unsigned int key_size; + unsigned int hash_size; + int ret = 0; + + if (!pk || !hash || pk->key[0] != 0x30 || pk->key[1] != 0x82) + return -EINVAL; + + key_size = (pk->key[2] << 8) + pk->key[3] + 4; + + ctx = EVP_MD_CTX_create(); + if (!ctx) + return openssl_err("EVP context creation failed"); + + EVP_MD_CTX_init(ctx); + if (!EVP_DigestInit(ctx, EVP_sha256())) { + ret = openssl_err("Digest setup failed"); + goto hash_err_ctx; + } + + if (!EVP_DigestUpdate(ctx, pk->key, key_size)) { + ret = openssl_err("Hashing data failed"); + goto hash_err_ctx; + } + + if (!EVP_DigestFinal(ctx, hash->hash, &hash_size)) { + ret = openssl_err("Could not obtain hash"); + goto hash_err_ctx; + } + + EVP_MD_CTX_cleanup(ctx); + +hash_err_ctx: + EVP_MD_CTX_destroy(ctx); + return ret; +} + +static int kwb_import_pubkey(RSA **key, struct pubkey_der_v1 *src, char *keyname) +{ + RSA *rsa; + const unsigned char *ptr; + + if (!key || !src) + goto fail; + + ptr = src->key; + rsa = d2i_RSAPublicKey(key, &ptr, sizeof(src->key)); + if (!rsa) { + openssl_err("error decoding public key"); + goto fail; + } + + return 0; +fail: + fprintf(stderr, "Failed to decode %s pubkey\n", keyname); + return -EINVAL; +} + +static int kwb_export_pubkey(RSA *key, struct pubkey_der_v1 *dst, FILE *hashf, + char *keyname) +{ + int size_exp, size_mod, size_seq; + uint8_t *cur; + char *errmsg = "Failed to encode %s\n"; + + if (!key || !key->e || !key->n || !dst) { + fprintf(stderr, "export pk failed: (%p, %p, %p, %p)", + key, key->e, key->n, dst); + fprintf(stderr, errmsg, keyname); + return -EINVAL; + } + + /* + * According to the specs, the key should be PKCS#1 DER encoded. + * But unfortunately the really required encoding seems to be different; + * it violates DER...! (But it still conformes to BER.) + * (Length always in long form w/ 2 byte length code; no leading zero + * when MSB of first byte is set...) + * So we cannot use the encoding func provided by OpenSSL and have to + * do the encoding manually. + */ + + size_exp = BN_num_bytes(key->e); + size_mod = BN_num_bytes(key->n); + size_seq = 4 + size_mod + 4 + size_exp; + + if (size_mod > 256) { + fprintf(stderr, "export pk failed: wrong mod size: %d\n", + size_mod); + fprintf(stderr, errmsg, keyname); + return -EINVAL; + } + + if (4 + size_seq > sizeof(dst->key)) { + fprintf(stderr, "export pk failed: seq too large (%d, %lu)\n", + 4 + size_seq, sizeof(dst->key)); + fprintf(stderr, errmsg, keyname); + return -ENOBUFS; + } + + cur = dst->key; + + /* PKCS#1 (RFC3447) RSAPublicKey structure */ + *cur++ = 0x30; /* SEQUENCE */ + *cur++ = 0x82; + *cur++ = (size_seq >> 8) & 0xFF; + *cur++ = size_seq & 0xFF; + /* Modulus */ + *cur++ = 0x02; /* INTEGER */ + *cur++ = 0x82; + *cur++ = (size_mod >> 8) & 0xFF; + *cur++ = size_mod & 0xFF; + BN_bn2bin(key->n, cur); + cur += size_mod; + /* Exponent */ + *cur++ = 0x02; /* INTEGER */ + *cur++ = 0x82; + *cur++ = (size_exp >> 8) & 0xFF; + *cur++ = size_exp & 0xFF; + BN_bn2bin(key->e, cur); + + if (hashf) { + struct hash_v1 pk_hash; + int i; + int ret = 0; + + ret = kwb_compute_pubkey_hash(dst, &pk_hash); + if (ret < 0) { + fprintf(stderr, errmsg, keyname); + return ret; + } + + fprintf(hashf, "SHA256 = "); + for (i = 0 ; i < sizeof(pk_hash.hash); ++i) + fprintf(hashf, "%02X", pk_hash.hash[i]); + fprintf(hashf, "\n"); + } + + return 0; +} + +int kwb_sign(RSA *key, void *data, int datasz, struct sig_v1 *sig, char *signame) +{ + EVP_PKEY *evp_key; + EVP_MD_CTX *ctx; + unsigned int sig_size; + int size; + int ret = 0; + + evp_key = EVP_PKEY_new(); + if (!evp_key) + return openssl_err("EVP_PKEY object creation failed"); + + if (!EVP_PKEY_set1_RSA(evp_key, key)) { + ret = openssl_err("EVP key setup failed"); + goto err_key; + } + + size = EVP_PKEY_size(evp_key); + if (size > sizeof(sig->sig)) { + fprintf(stderr, "Buffer to small for signature (%d bytes)\n", + size); + ret = -ENOBUFS; + goto err_key; + } + + ctx = EVP_MD_CTX_create(); + if (!ctx) { + ret = openssl_err("EVP context creation failed"); + goto err_key; + } + EVP_MD_CTX_init(ctx); + if (!EVP_SignInit(ctx, EVP_sha256())) { + ret = openssl_err("Signer setup failed"); + goto err_ctx; + } + + if (!EVP_SignUpdate(ctx, data, datasz)) { + ret = openssl_err("Signing data failed"); + goto err_ctx; + } + + if (!EVP_SignFinal(ctx, sig->sig, &sig_size, evp_key)) { + ret = openssl_err("Could not obtain signature"); + goto err_ctx; + } + + EVP_MD_CTX_cleanup(ctx); + EVP_MD_CTX_destroy(ctx); + EVP_PKEY_free(evp_key); + + return 0; + +err_ctx: + EVP_MD_CTX_destroy(ctx); +err_key: + EVP_PKEY_free(evp_key); + fprintf(stderr, "Failed to create %s signature\n", signame); + return ret; +} + +int kwb_verify(RSA *key, void *data, int datasz, struct sig_v1 *sig, + char *signame) +{ + EVP_PKEY *evp_key; + EVP_MD_CTX *ctx; + int size; + int ret = 0; + + evp_key = EVP_PKEY_new(); + if (!evp_key) + return openssl_err("EVP_PKEY object creation failed"); + + if (!EVP_PKEY_set1_RSA(evp_key, key)) { + ret = openssl_err("EVP key setup failed"); + goto err_key; + } + + size = EVP_PKEY_size(evp_key); + if (size > sizeof(sig->sig)) { + fprintf(stderr, "Invalid signature size (%d bytes)\n", + size); + ret = -EINVAL; + goto err_key; + } + + ctx = EVP_MD_CTX_create(); + if (!ctx) { + ret = openssl_err("EVP context creation failed"); + goto err_key; + } + EVP_MD_CTX_init(ctx); + if (!EVP_VerifyInit(ctx, EVP_sha256())) { + ret = openssl_err("Verifier setup failed"); + goto err_ctx; + } + + if (!EVP_VerifyUpdate(ctx, data, datasz)) { + ret = openssl_err("Hashing data failed"); + goto err_ctx; + } + + if (!EVP_VerifyFinal(ctx, sig->sig, sizeof(sig->sig), evp_key)) { + ret = openssl_err("Could not verify signature"); + goto err_ctx; + } + + EVP_MD_CTX_cleanup(ctx); + EVP_MD_CTX_destroy(ctx); + EVP_PKEY_free(evp_key); + + return 0; + +err_ctx: + EVP_MD_CTX_destroy(ctx); +err_key: + EVP_PKEY_free(evp_key); + fprintf(stderr, "Failed to verify %s signature\n", signame); + return ret; +} + +int kwb_sign_and_verify(RSA *key, void *data, int datasz, struct sig_v1 *sig, + char *signame) +{ + if (kwb_sign(key, data, datasz, sig, signame) < 0) + return -1; + + if (kwb_verify(key, data, datasz, sig, signame) < 0) + return -1; + + return 0; +} + + +int kwb_dump_fuse_cmds_38x(FILE *out, struct secure_hdr_v1 *sec_hdr) +{ + struct hash_v1 kak_pub_hash; + struct image_cfg_element *e; + unsigned int fuse_line; + int i, idx; + uint8_t *ptr; + uint32_t val; + int ret = 0; + + if (!out || !sec_hdr) + return -EINVAL; + + ret = kwb_compute_pubkey_hash(&sec_hdr->kak, &kak_pub_hash); + if (ret < 0) + goto done; + + fprintf(out, "# burn KAK pub key hash\n"); + ptr = kak_pub_hash.hash; + for (fuse_line = 26; fuse_line <= 30; ++fuse_line) { + fprintf(out, "fuse prog -y %u 0 ", fuse_line); + + for (i = 4; i-- > 0;) + fprintf(out, "%02hx", (ushort)ptr[i]); + ptr += 4; + fprintf(out, " 00"); + + if (fuse_line < 30) { + for (i = 3; i-- > 0;) + fprintf(out, "%02hx", (ushort)ptr[i]); + ptr += 3; + } else { + fprintf(out, "000000"); + } + + fprintf(out, " 1\n"); + } + + fprintf(out, "# burn CSK selection\n"); + + idx = image_get_csk_index(); + if (idx < 0 || idx > 15) { + ret = -EINVAL; + goto done; + } + if (idx > 0) { + for (fuse_line = 31; fuse_line < 31 + idx; ++fuse_line) + fprintf(out, "fuse prog -y %u 0 00000001 00000000 1\n", + fuse_line); + } else { + fprintf(out, "# CSK index is 0; no mods needed\n"); + } + + e = image_find_option(IMAGE_CFG_BOX_ID); + if (e) { + fprintf(out, "# set box ID\n"); + fprintf(out, "fuse prog -y 48 0 %08x 00000000 1\n", e->boxid); + } + + e = image_find_option(IMAGE_CFG_FLASH_ID); + if (e) { + fprintf(out, "# set flash ID\n"); + fprintf(out, "fuse prog -y 47 0 %08x 00000000 1\n", e->flashid); + } + + fprintf(out, "# enable secure mode "); + fprintf(out, "(must be the last fuse line written)\n"); + + val = 1; + e = image_find_option(IMAGE_CFG_SEC_BOOT_DEV); + if (!e) { + fprintf(stderr, "ERROR: secured mode boot device not given\n"); + ret = -EINVAL; + goto done; + } + + if (e->sec_boot_dev > 0xff) { + fprintf(stderr, "ERROR: secured mode boot device invalid\n"); + ret = -EINVAL; + goto done; + } + + val |= (e->sec_boot_dev << 8); + + fprintf(out, "fuse prog -y 24 0 %08x 0103e0a9 1\n", val); + + fprintf(out, "# lock (unused) fuse lines (0-23)s\n"); + for (fuse_line = 0; fuse_line < 24; ++fuse_line) + fprintf(out, "fuse prog -y %u 2 1\n", fuse_line); + + fprintf(out, "# OK, that's all :-)\n"); + +done: + return ret; +} + +static int kwb_dump_fuse_cmds(struct secure_hdr_v1 *sec_hdr) +{ + int ret = 0; + struct image_cfg_element *e; + + e = image_find_option(IMAGE_CFG_SEC_FUSE_DUMP); + if (!e) + return 0; + + if (!strcmp(e->name, "a38x")) { + FILE *out = fopen("kwb_fuses_a38x.txt", "w+"); + + kwb_dump_fuse_cmds_38x(out, sec_hdr); + fclose(out); + goto done; + } + + ret = -ENOSYS; + +done: + return ret; +} + +#endif + static void *image_create_v0(size_t *imagesz, struct image_tool_params *params, int payloadsz) { @@ -381,6 +939,14 @@ static size_t image_headersz_v1(int *hasext) *hasext = 1; } +#if defined(CONFIG_KWB_SECURE) + if (image_get_csk_index() >= 0) { + headersz += sizeof(struct secure_hdr_v1); + if (hasext) + *hasext = 1; + } +#endif + #if defined(CONFIG_SYS_U_BOOT_OFFS) if (headersz > CONFIG_SYS_U_BOOT_OFFS) { fprintf(stderr, @@ -476,14 +1042,129 @@ int add_binary_header_v1(uint8_t *cur) return 0; } +#if defined(CONFIG_KWB_SECURE) + +int export_pub_kak_hash(RSA *kak, struct secure_hdr_v1 *secure_hdr) +{ + FILE *hashf; + int res; + + hashf = fopen("pub_kak_hash.txt", "w"); + + res = kwb_export_pubkey(kak, &secure_hdr->kak, hashf, "KAK"); + + fclose(hashf); + + return res < 0 ? 1 : 0; +} + +int kwb_sign_csk_with_kak(struct image_tool_params *params, + struct secure_hdr_v1 *secure_hdr, RSA *csk) +{ + RSA *kak = NULL; + RSA *kak_pub = NULL; + int csk_idx = image_get_csk_index(); + struct sig_v1 tmp_sig; + + if (csk_idx >= 16) { + fprintf(stderr, "Invalid CSK index %d\n", csk_idx); + return 1; + } + + if (kwb_load_kak(params, &kak) < 0) + return 1; + + if (export_pub_kak_hash(kak, secure_hdr)) + return 1; + + if (kwb_import_pubkey(&kak_pub, &secure_hdr->kak, "KAK") < 0) + return 1; + + if (kwb_export_pubkey(csk, &secure_hdr->csk[csk_idx], NULL, "CSK") < 0) + return 1; + + if (kwb_sign_and_verify(kak, &secure_hdr->csk, + sizeof(secure_hdr->csk) + + sizeof(secure_hdr->csksig), + &tmp_sig, "CSK") < 0) + return 1; + + if (kwb_verify(kak_pub, &secure_hdr->csk, + sizeof(secure_hdr->csk) + + sizeof(secure_hdr->csksig), + &tmp_sig, "CSK (2)") < 0) + return 1; + + secure_hdr->csksig = tmp_sig; + + return 0; +} + +int add_secure_header_v1(struct image_tool_params *params, uint8_t *ptr, + int payloadsz, size_t headersz, uint8_t *image, + struct secure_hdr_v1 *secure_hdr) +{ + struct image_cfg_element *e_jtagdelay; + struct image_cfg_element *e_boxid; + struct image_cfg_element *e_flashid; + RSA *csk = NULL; + unsigned char *image_ptr; + size_t image_size; + struct sig_v1 tmp_sig; + bool specialized_img = image_get_spezialized_img(); + + kwb_msg("Create secure header content\n"); + + e_jtagdelay = image_find_option(IMAGE_CFG_JTAG_DELAY); + e_boxid = image_find_option(IMAGE_CFG_BOX_ID); + e_flashid = image_find_option(IMAGE_CFG_FLASH_ID); + + if (kwb_load_csk(params, &csk) < 0) + return 1; + + secure_hdr->headertype = OPT_HDR_V1_SECURE_TYPE; + secure_hdr->headersz_msb = 0; + secure_hdr->headersz_lsb = cpu_to_le16(sizeof(struct secure_hdr_v1)); + if (e_jtagdelay) + secure_hdr->jtag_delay = e_jtagdelay->jtag_delay; + if (e_boxid && specialized_img) + secure_hdr->boxid = cpu_to_le32(e_boxid->boxid); + if (e_flashid && specialized_img) + secure_hdr->flashid = cpu_to_le32(e_flashid->flashid); + + if (kwb_sign_csk_with_kak(params, secure_hdr, csk)) + return 1; + + image_ptr = ptr + headersz; + image_size = payloadsz - headersz; + + if (kwb_sign_and_verify(csk, image_ptr, image_size, + &secure_hdr->imgsig, "image") < 0) + return 1; + + if (kwb_sign_and_verify(csk, image, headersz, &tmp_sig, "header") < 0) + return 1; + + secure_hdr->hdrsig = tmp_sig; + + kwb_dump_fuse_cmds(secure_hdr); + + return 0; +} +#endif + static void *image_create_v1(size_t *imagesz, struct image_tool_params *params, - int payloadsz) + uint8_t *ptr, int payloadsz) { struct image_cfg_element *e; struct main_hdr_v1 *main_hdr; +#if defined(CONFIG_KWB_SECURE) + struct secure_hdr_v1 *secure_hdr = NULL; +#endif size_t headersz; uint8_t *image, *cur; int hasext = 0; + uint8_t *next_ext = NULL; /* * Calculate the size of the header and the size of the @@ -502,7 +1183,9 @@ static void *image_create_v1(size_t *imagesz, struct image_tool_params *params, memset(image, 0, headersz); main_hdr = (struct main_hdr_v1 *)image; - cur = image + sizeof(struct main_hdr_v1); + cur = image; + cur += sizeof(struct main_hdr_v1); + next_ext = &main_hdr->ext; /* Fill the main header */ main_hdr->blocksize = @@ -531,9 +1214,28 @@ static void *image_create_v1(size_t *imagesz, struct image_tool_params *params, if (e) main_hdr->flags = e->debug ? 0x1 : 0; +#if defined(CONFIG_KWB_SECURE) + if (image_get_csk_index() >= 0) { + /* + * only reserve the space here; we fill the header later since + * we need the header to be complete to compute the signatures + */ + secure_hdr = (struct secure_hdr_v1 *)cur; + cur += sizeof(struct secure_hdr_v1); + next_ext = &secure_hdr->next; + } +#endif + *next_ext = 1; + if (add_binary_header_v1(cur)) return NULL; +#if defined(CONFIG_KWB_SECURE) + if (secure_hdr && add_secure_header_v1(params, ptr, payloadsz, + headersz, image, secure_hdr)) + return NULL; +#endif + /* Calculate and set the header checksum */ main_hdr->checksum = image_checksum8(main_hdr, headersz); @@ -645,6 +1347,36 @@ static int image_create_config_parse_oneline(char *line, case IMAGE_CFG_DEBUG: el->debug = strtoul(value1, NULL, 10); break; + case IMAGE_CFG_KAK: + el->key_name = strdup(value1); + break; + case IMAGE_CFG_CSK: + el->key_name = strdup(value1); + break; + case IMAGE_CFG_CSK_INDEX: + el->csk_idx = strtol(value1, NULL, 0); + break; + case IMAGE_CFG_JTAG_DELAY: + el->jtag_delay = strtoul(value1, NULL, 0); + break; + case IMAGE_CFG_BOX_ID: + el->boxid = strtoul(value1, NULL, 0); + break; + case IMAGE_CFG_FLASH_ID: + el->flashid = strtoul(value1, NULL, 0); + break; + case IMAGE_CFG_SEC_SPECIALIZED_IMG: + el->sec_specialized_img = true; + break; + case IMAGE_CFG_SEC_COMMON_IMG: + el->sec_specialized_img = false; + break; + case IMAGE_CFG_SEC_BOOT_DEV: + el->sec_boot_dev = strtoul(value1, NULL, 0); + break; + case IMAGE_CFG_SEC_FUSE_DUMP: + el->name = strdup(value1); + break; default: fprintf(stderr, unknown_msg, line); } @@ -804,7 +1536,7 @@ static void kwbimage_set_header(void *ptr, struct stat *sbuf, int ifd, break; case 1: - image = image_create_v1(&headersz, params, sbuf->st_size); + image = image_create_v1(&headersz, params, ptr, sbuf->st_size); break; default: diff --git a/tools/kwbimage.h b/tools/kwbimage.h index 01c2f1f..20f4d0d 100644 --- a/tools/kwbimage.h +++ b/tools/kwbimage.h @@ -114,6 +114,43 @@ struct opt_hdr_v1 { }; /* + * Public Key data in DER format + */ +struct pubkey_der_v1 { + uint8_t key[524]; +}; + +/* + * Signature (RSA 2048) + */ +struct sig_v1 { + uint8_t sig[256]; +}; + +/* + * Structure of secure header (Armada 38x) + */ +struct secure_hdr_v1 { + uint8_t headertype; /* 0x0 */ + uint8_t headersz_msb; /* 0x1 */ + uint16_t headersz_lsb; /* 0x2 - 0x3 */ + uint32_t reserved1; /* 0x4 - 0x7 */ + struct pubkey_der_v1 kak; /* 0x8 - 0x213 */ + uint8_t jtag_delay; /* 0x214 */ + uint8_t reserved2; /* 0x215 */ + uint16_t reserved3; /* 0x216 - 0x217 */ + uint32_t boxid; /* 0x218 - 0x21B */ + uint32_t flashid; /* 0x21C - 0x21F */ + struct sig_v1 hdrsig; /* 0x220 - 0x31F */ + struct sig_v1 imgsig; /* 0x320 - 0x41F */ + struct pubkey_der_v1 csk[16]; /* 0x420 - 0x24DF */ + struct sig_v1 csksig; /* 0x24E0 - 0x25DF */ + uint8_t next; /* 0x25E0 */ + uint8_t reserved4; /* 0x25E1 */ + uint16_t reserved5; /* 0x25E2 - 0x25E3 */ +}; + +/* * Various values for the opt_hdr_v1->headertype field, describing the * different types of optional headers. The "secure" header contains * informations related to secure boot (encryption keys, etc.). The |