arm: mvebu: Implement secure boot
The patch implements secure booting for the mvebu architecture.
This includes:
- The addition of secure headers and all needed signatures and keys in
mkimage
- Commands capable of writing the board's efuses to both write the
needed cryptographic data and enable the secure booting mechanism
- The creation of convenience text files containing the necessary
commands to write the efuses
The KAK and CSK keys are expected to reside in the files kwb_kak.key and
kwb_csk.key (OpenSSL 2048 bit private keys) in the top-level directory.
Signed-off-by: Reinhard Pfau <reinhard.pfau@gdsys.cc>
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/tools/Makefile b/tools/Makefile
index cefcedf..f5ac631 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -142,8 +142,12 @@
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 @@
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 @@
[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 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 @@
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 @@
}
}
+#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 @@
*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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
};
/*
+ * 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