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-rw-r--r--tools/marvell/doimage/doimage.c1764
1 files changed, 1764 insertions, 0 deletions
diff --git a/tools/marvell/doimage/doimage.c b/tools/marvell/doimage/doimage.c
new file mode 100644
index 0000000..e08b820
--- /dev/null
+++ b/tools/marvell/doimage/doimage.c
@@ -0,0 +1,1764 @@
+/*
+ * Copyright (C) 2018 Marvell International Ltd.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ * https://spdx.org/licenses
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <stddef.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+
+#ifdef CONFIG_MVEBU_SECURE_BOOT
+#include <libconfig.h> /* for parsing config file */
+
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "mbedtls/config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
+/* mbedTLS stuff */
+#if defined(MBEDTLS_BIGNUM_C) && defined(MBEDTLS_ENTROPY_C) && \
+ defined(MBEDTLS_SHA256_C) && \
+ defined(MBEDTLS_PK_PARSE_C) && defined(MBEDTLS_FS_IO) && \
+ defined(MBEDTLS_CTR_DRBG_C)
+#include <mbedtls/error.h>
+#include <mbedtls/entropy.h>
+#include <mbedtls/ctr_drbg.h>
+#include <mbedtls/md.h>
+#include <mbedtls/pk.h>
+#include <mbedtls/sha256.h>
+#include <mbedtls/x509.h>
+#else
+#error "Bad mbedTLS configuration!"
+#endif
+#endif /* CONFIG_MVEBU_SECURE_BOOT */
+
+#define MAX_FILENAME 256
+#define CSK_ARR_SZ 16
+#define CSK_ARR_EMPTY_FILE "*"
+#define AES_KEY_BIT_LEN 256
+#define AES_KEY_BYTE_LEN (AES_KEY_BIT_LEN >> 3)
+#define AES_BLOCK_SZ 16
+#define RSA_SIGN_BYTE_LEN 256
+#define MAX_RSA_DER_BYTE_LEN 524
+/* Number of address pairs in control array */
+#define CP_CTRL_EL_ARRAY_SZ 32
+
+#define VERSION_STRING "Marvell(C) doimage utility version 3.3"
+
+/* A8K definitions */
+
+/* Extension header types */
+#define EXT_TYPE_SECURITY 0x1
+#define EXT_TYPE_BINARY 0x2
+
+#define MAIN_HDR_MAGIC 0xB105B002
+
+/* PROLOG alignment considerations:
+ * 128B: To allow supporting XMODEM protocol.
+ * 8KB: To align the boot image to the largest NAND page size, and simplify
+ * the read operations from NAND.
+ * We choose the largest page size, in order to use a single image for all
+ * NAND page sizes.
+ */
+#define PROLOG_ALIGNMENT (8 << 10)
+
+/* UART argument bitfield */
+#define UART_MODE_UNMODIFIED 0x0
+#define UART_MODE_DISABLE 0x1
+#define UART_MODE_UPDATE 0x2
+
+typedef struct _main_header {
+ uint32_t magic; /* 0-3 */
+ uint32_t prolog_size; /* 4-7 */
+ uint32_t prolog_checksum; /* 8-11 */
+ uint32_t boot_image_size; /* 12-15 */
+ uint32_t boot_image_checksum; /* 16-19 */
+ uint32_t rsrvd0; /* 20-23 */
+ uint32_t load_addr; /* 24-27 */
+ uint32_t exec_addr; /* 28-31 */
+ uint8_t uart_cfg; /* 32 */
+ uint8_t baudrate; /* 33 */
+ uint8_t ext_count; /* 34 */
+ uint8_t aux_flags; /* 35 */
+ uint32_t io_arg_0; /* 36-39 */
+ uint32_t io_arg_1; /* 40-43 */
+ uint32_t io_arg_2; /* 43-47 */
+ uint32_t io_arg_3; /* 48-51 */
+ uint32_t rsrvd1; /* 52-55 */
+ uint32_t rsrvd2; /* 56-59 */
+ uint32_t rsrvd3; /* 60-63 */
+} header_t;
+
+typedef struct _ext_header {
+ uint8_t type;
+ uint8_t offset;
+ uint16_t reserved;
+ uint32_t size;
+} ext_header_t;
+
+typedef struct _sec_entry {
+ uint8_t kak_key[MAX_RSA_DER_BYTE_LEN];
+ uint32_t jtag_delay;
+ uint32_t box_id;
+ uint32_t flash_id;
+ uint32_t jtag_en;
+ uint32_t encrypt_en;
+ uint32_t efuse_dis;
+ uint8_t header_sign[RSA_SIGN_BYTE_LEN];
+ uint8_t image_sign[RSA_SIGN_BYTE_LEN];
+ uint8_t csk_keys[CSK_ARR_SZ][MAX_RSA_DER_BYTE_LEN];
+ uint8_t csk_sign[RSA_SIGN_BYTE_LEN];
+ uint32_t cp_ctrl_arr[CP_CTRL_EL_ARRAY_SZ];
+ uint32_t cp_efuse_arr[CP_CTRL_EL_ARRAY_SZ];
+} sec_entry_t;
+
+/* A8K definitions end */
+
+/* UART argument bitfield */
+#define UART_MODE_UNMODIFIED 0x0
+#define UART_MODE_DISABLE 0x1
+#define UART_MODE_UPDATE 0x2
+
+#define uart_set_mode(arg, mode) (arg |= (mode & 0x3))
+
+typedef struct _sec_options {
+#ifdef CONFIG_MVEBU_SECURE_BOOT
+ char aes_key_file[MAX_FILENAME+1];
+ char kak_key_file[MAX_FILENAME+1];
+ char csk_key_file[CSK_ARR_SZ][MAX_FILENAME+1];
+ uint32_t box_id;
+ uint32_t flash_id;
+ uint32_t jtag_delay;
+ uint8_t csk_index;
+ uint8_t jtag_enable;
+ uint8_t efuse_disable;
+ uint32_t cp_ctrl_arr[CP_CTRL_EL_ARRAY_SZ];
+ uint32_t cp_efuse_arr[CP_CTRL_EL_ARRAY_SZ];
+ mbedtls_pk_context kak_pk;
+ mbedtls_pk_context csk_pk[CSK_ARR_SZ];
+ uint8_t aes_key[AES_KEY_BYTE_LEN];
+ uint8_t *encrypted_image;
+ uint32_t enc_image_sz;
+#endif
+} sec_options;
+
+typedef struct _options {
+ char bin_ext_file[MAX_FILENAME+1];
+ char sec_cfg_file[MAX_FILENAME+1];
+ sec_options *sec_opts;
+ uint32_t load_addr;
+ uint32_t exec_addr;
+ uint32_t baudrate;
+ uint8_t disable_print;
+ int8_t key_index; /* For header signatures verification only */
+ uint32_t nfc_io_args;
+} options_t;
+
+void usage_err(char *msg)
+{
+ fprintf(stderr, "Error: %s\n", msg);
+ fprintf(stderr, "run 'doimage -h' to get usage information\n");
+ exit(-1);
+}
+
+void usage(void)
+{
+ printf("\n\n%s\n\n", VERSION_STRING);
+ printf("Usage: doimage [options] <input_file> [output_file]\n");
+ printf("create bootrom image from u-boot and boot extensions\n\n");
+
+ printf("Arguments\n");
+ printf(" input_file name of boot image file.\n");
+ printf(" if -p is used, name of the bootrom image file");
+ printf(" to parse.\n");
+ printf(" output_file name of output bootrom image file\n");
+
+ printf("\nOptions\n");
+ printf(" -s target SOC name. supports a8020,a7020\n");
+ printf(" different SOCs may have different boot image\n");
+ printf(" format so it's mandatory to know the target SOC\n");
+ printf(" -i boot I/F name. supports nand, spi, nor\n");
+ printf(" This affects certain parameters coded in the\n");
+ printf(" image header\n");
+ printf(" -l boot image load address. default is 0x0\n");
+ printf(" -e boot image entry address. default is 0x0\n");
+ printf(" -b binary extension image file.\n");
+ printf(" This image is executed before the boot image.\n");
+ printf(" This is typically used to initialize the memory ");
+ printf(" controller.\n");
+ printf(" Currently supports only a single file.\n");
+#ifdef CONFIG_MVEBU_SECURE_BOOT
+ printf(" -c Make trusted boot image using parameters\n");
+ printf(" from the configuration file.\n");
+#endif
+ printf(" -p Parse and display a pre-built boot image\n");
+#ifdef CONFIG_MVEBU_SECURE_BOOT
+ printf(" -k Key index for RSA signatures verification\n");
+ printf(" when parsing the boot image\n");
+#endif
+ printf(" -m Disable prints of bootrom and binary extension\n");
+ printf(" -u UART baudrate used for bootrom prints.\n");
+ printf(" Must be multiple of 1200\n");
+ printf(" -h Show this help message\n");
+ printf(" IO-ROM NFC-NAND boot parameters:\n");
+ printf(" -n NAND device block size in KB [Default is 64KB].\n");
+ printf(" -t NAND cell technology (SLC [Default] or MLC)\n");
+
+ exit(-1);
+}
+
+/* globals */
+static options_t opts = {
+ .bin_ext_file = "NA",
+ .sec_cfg_file = "NA",
+ .sec_opts = 0,
+ .load_addr = 0x0,
+ .exec_addr = 0x0,
+ .disable_print = 0,
+ .baudrate = 0,
+ .key_index = -1,
+};
+
+int get_file_size(char *filename)
+{
+ struct stat st;
+
+ if (stat(filename, &st) == 0)
+ return st.st_size;
+
+ return -1;
+}
+
+uint32_t checksum32(uint32_t *start, int len)
+{
+ uint32_t sum = 0;
+ uint32_t *startp = start;
+
+ do {
+ sum += *startp;
+ startp++;
+ len -= 4;
+ } while (len > 0);
+
+ return sum;
+}
+
+/*******************************************************************************
+ * create_rsa_signature (memory buffer content)
+ * Create RSASSA-PSS/SHA-256 signature for memory buffer
+ * using RSA Private Key
+ * INPUT:
+ * pk_ctx Private Key context
+ * input memory buffer
+ * ilen buffer length
+ * pers personalization string for seeding the RNG.
+ * For instance a private key file name.
+ * OUTPUT:
+ * signature RSA-2048 signature
+ * RETURN:
+ * 0 on success
+ */
+#ifdef CONFIG_MVEBU_SECURE_BOOT
+int create_rsa_signature(mbedtls_pk_context *pk_ctx,
+ const unsigned char *input,
+ size_t ilen,
+ const char *pers,
+ uint8_t *signature)
+{
+ mbedtls_entropy_context entropy;
+ mbedtls_ctr_drbg_context ctr_drbg;
+ unsigned char hash[32];
+ unsigned char buf[MBEDTLS_MPI_MAX_SIZE];
+ int rval;
+
+ /* Not sure this is required,
+ * but it's safer to start with empty buffers
+ */
+ memset(hash, 0, sizeof(hash));
+ memset(buf, 0, sizeof(buf));
+
+ mbedtls_ctr_drbg_init(&ctr_drbg);
+ mbedtls_entropy_init(&entropy);
+
+ /* Seed the random number generator */
+ rval = mbedtls_ctr_drbg_seed(&ctr_drbg, mbedtls_entropy_func, &entropy,
+ (const unsigned char *)pers, strlen(pers));
+ if (rval != 0) {
+ fprintf(stderr, " Failed in ctr_drbg_init call (%d)!\n", rval);
+ goto sign_exit;
+ }
+
+ /* The PK context should be already initialized.
+ * Set the padding type for this PK context
+ */
+ mbedtls_rsa_set_padding(mbedtls_pk_rsa(*pk_ctx),
+ MBEDTLS_RSA_PKCS_V21, MBEDTLS_MD_SHA256);
+
+ /* First compute the SHA256 hash for the input blob */
+ mbedtls_sha256_ret(input, ilen, hash, 0);
+
+ /* Then calculate the hash signature */
+ rval = mbedtls_rsa_rsassa_pss_sign(mbedtls_pk_rsa(*pk_ctx),
+ mbedtls_ctr_drbg_random,
+ &ctr_drbg,
+ MBEDTLS_RSA_PRIVATE,
+ MBEDTLS_MD_SHA256, 0, hash, buf);
+ if (rval != 0) {
+ fprintf(stderr,
+ "Failed to create RSA signature for %s. Error %d\n",
+ pers, rval);
+ goto sign_exit;
+ }
+ memcpy(signature, buf, 256);
+
+sign_exit:
+ mbedtls_ctr_drbg_free(&ctr_drbg);
+ mbedtls_entropy_free(&entropy);
+
+ return rval;
+} /* end of create_rsa_signature */
+
+/*******************************************************************************
+ * verify_rsa_signature (memory buffer content)
+ * Verify RSASSA-PSS/SHA-256 signature for memory buffer
+ * using RSA Public Key
+ * INPUT:
+ * pub_key Public Key buffer
+ * ilen Public Key buffer length
+ * input memory buffer
+ * ilen buffer length
+ * pers personalization string for seeding the RNG.
+ * signature RSA-2048 signature
+ * OUTPUT:
+ * none
+ * RETURN:
+ * 0 on success
+ */
+int verify_rsa_signature(const unsigned char *pub_key,
+ size_t klen,
+ const unsigned char *input,
+ size_t ilen,
+ const char *pers,
+ uint8_t *signature)
+{
+ mbedtls_entropy_context entropy;
+ mbedtls_ctr_drbg_context ctr_drbg;
+ mbedtls_pk_context pk_ctx;
+ unsigned char hash[32];
+ int rval;
+ unsigned char *pkey = (unsigned char *)pub_key;
+
+ /* Not sure this is required,
+ * but it's safer to start with empty buffer
+ */
+ memset(hash, 0, sizeof(hash));
+
+ mbedtls_pk_init(&pk_ctx);
+ mbedtls_ctr_drbg_init(&ctr_drbg);
+ mbedtls_entropy_init(&entropy);
+
+ /* Seed the random number generator */
+ rval = mbedtls_ctr_drbg_seed(&ctr_drbg, mbedtls_entropy_func, &entropy,
+ (const unsigned char *)pers, strlen(pers));
+ if (rval != 0) {
+ fprintf(stderr, " Failed in ctr_drbg_init call (%d)!\n", rval);
+ goto verify_exit;
+ }
+
+ /* Check ability to read the public key */
+ rval = mbedtls_pk_parse_subpubkey(&pkey, pub_key + klen, &pk_ctx);
+ if (rval != 0) {
+ fprintf(stderr, " Failed in pk_parse_public_key (%#x)!\n",
+ rval);
+ goto verify_exit;
+ }
+
+ /* Set the padding type for the new PK context */
+ mbedtls_rsa_set_padding(mbedtls_pk_rsa(pk_ctx),
+ MBEDTLS_RSA_PKCS_V21,
+ MBEDTLS_MD_SHA256);
+
+ /* Compute the SHA256 hash for the input buffer */
+ mbedtls_sha256_ret(input, ilen, hash, 0);
+
+ rval = mbedtls_rsa_rsassa_pss_verify(mbedtls_pk_rsa(pk_ctx),
+ mbedtls_ctr_drbg_random,
+ &ctr_drbg,
+ MBEDTLS_RSA_PUBLIC,
+ MBEDTLS_MD_SHA256, 0,
+ hash, signature);
+ if (rval != 0)
+ fprintf(stderr, "Failed to verify signature (%d)!\n", rval);
+
+verify_exit:
+
+ mbedtls_pk_free(&pk_ctx);
+ mbedtls_ctr_drbg_free(&ctr_drbg);
+ mbedtls_entropy_free(&entropy);
+ return rval;
+} /* end of verify_rsa_signature */
+
+/*******************************************************************************
+ * image_encrypt
+ * Encrypt image buffer using AES-256-CBC scheme.
+ * The resulting image is saved into opts.sec_opts->encrypted_image
+ * and the adjusted image size into opts.sec_opts->enc_image_sz
+ * First AES_BLOCK_SZ bytes of the output image contain IV
+ * INPUT:
+ * buf Source buffer to encrypt
+ * blen Source buffer length
+ * OUTPUT:
+ * none
+ * RETURN:
+ * 0 on success
+ */
+int image_encrypt(uint8_t *buf, uint32_t blen)
+{
+ struct timeval tv;
+ char *ptmp = (char *)&tv;
+ unsigned char digest[32];
+ unsigned char IV[AES_BLOCK_SZ];
+ int i, k;
+ mbedtls_aes_context aes_ctx;
+ int rval = -1;
+ uint8_t *test_img = 0;
+
+ if (AES_BLOCK_SZ > 32) {
+ fprintf(stderr, "Unsupported AES block size %d\n",
+ AES_BLOCK_SZ);
+ return rval;
+ }
+
+ mbedtls_aes_init(&aes_ctx);
+ memset(IV, 0, AES_BLOCK_SZ);
+ memset(digest, 0, 32);
+
+ /* Generate initialization vector and init the AES engine
+ * Use file name XOR current time and finally SHA-256
+ * [0...AES_BLOCK_SZ-1]
+ */
+ k = strlen(opts.sec_opts->aes_key_file);
+ if (k > AES_BLOCK_SZ)
+ k = AES_BLOCK_SZ;
+ memcpy(IV, opts.sec_opts->aes_key_file, k);
+ gettimeofday(&tv, 0);
+
+ for (i = 0, k = 0; i < AES_BLOCK_SZ; i++,
+ k = (k+1) % sizeof(struct timeval))
+ IV[i] ^= ptmp[k];
+
+ /* compute SHA-256 digest of the results
+ * and use it as the init vector (IV)
+ */
+ mbedtls_sha256_ret(IV, AES_BLOCK_SZ, digest, 0);
+ memcpy(IV, digest, AES_BLOCK_SZ);
+ mbedtls_aes_setkey_enc(&aes_ctx, opts.sec_opts->aes_key,
+ AES_KEY_BIT_LEN);
+
+ /* The output image has to include extra space for IV
+ * and to be aligned to the AES block size.
+ * The input image buffer has to be already aligned to AES_BLOCK_SZ
+ * and padded with zeroes
+ */
+ opts.sec_opts->enc_image_sz = (blen + 2 * AES_BLOCK_SZ - 1) &
+ ~(AES_BLOCK_SZ - 1);
+ opts.sec_opts->encrypted_image = calloc(opts.sec_opts->enc_image_sz, 1);
+ if (opts.sec_opts->encrypted_image == 0) {
+ fprintf(stderr, "Failed to allocate encrypted image!\n");
+ goto encrypt_exit;
+ }
+
+ /* Put IV into the output buffer next to the encrypted image
+ * Since the IV is modified by the encryption function,
+ * this should be done now
+ */
+ memcpy(opts.sec_opts->encrypted_image +
+ opts.sec_opts->enc_image_sz - AES_BLOCK_SZ,
+ IV, AES_BLOCK_SZ);
+ rval = mbedtls_aes_crypt_cbc(&aes_ctx, MBEDTLS_AES_ENCRYPT,
+ opts.sec_opts->enc_image_sz - AES_BLOCK_SZ,
+ IV, buf, opts.sec_opts->encrypted_image);
+ if (rval != 0) {
+ fprintf(stderr, "Failed to encrypt the image! Error %d\n",
+ rval);
+ goto encrypt_exit;
+ }
+
+ mbedtls_aes_free(&aes_ctx);
+
+ /* Try to decrypt the image and compare it with the original data */
+ mbedtls_aes_init(&aes_ctx);
+ mbedtls_aes_setkey_dec(&aes_ctx, opts.sec_opts->aes_key,
+ AES_KEY_BIT_LEN);
+
+ test_img = calloc(opts.sec_opts->enc_image_sz - AES_BLOCK_SZ, 1);
+ if (test_img == 0) {
+ fprintf(stderr, "Failed to allocate test image!d\n");
+ rval = -1;
+ goto encrypt_exit;
+ }
+
+ memcpy(IV, opts.sec_opts->encrypted_image +
+ opts.sec_opts->enc_image_sz - AES_BLOCK_SZ,
+ AES_BLOCK_SZ);
+ rval = mbedtls_aes_crypt_cbc(&aes_ctx, MBEDTLS_AES_DECRYPT,
+ opts.sec_opts->enc_image_sz - AES_BLOCK_SZ,
+ IV, opts.sec_opts->encrypted_image, test_img);
+ if (rval != 0) {
+ fprintf(stderr, "Failed to decrypt the image! Error %d\n",
+ rval);
+ goto encrypt_exit;
+ }
+
+ for (i = 0; i < blen; i++) {
+ if (buf[i] != test_img[i]) {
+ fprintf(stderr, "Failed to compare the image after");
+ fprintf(stderr, " decryption! Byte count is %d\n", i);
+ rval = -1;
+ goto encrypt_exit;
+ }
+ }
+
+encrypt_exit:
+
+ mbedtls_aes_free(&aes_ctx);
+ if (test_img)
+ free(test_img);
+
+ return rval;
+} /* end of image_encrypt */
+
+/*******************************************************************************
+ * verify_secure_header_signatures
+ * Verify CSK array, header and image signatures and print results
+ * INPUT:
+ * main_hdr Main header
+ * sec_ext Secure extension
+ * OUTPUT:
+ * none
+ * RETURN:
+ * 0 on success
+ */
+int verify_secure_header_signatures(header_t *main_hdr, sec_entry_t *sec_ext)
+{
+ uint8_t *image = (uint8_t *)main_hdr + main_hdr->prolog_size;
+ uint8_t signature[RSA_SIGN_BYTE_LEN];
+ int rval = -1;
+
+ /* Save headers signature and reset it in the secure header */
+ memcpy(signature, sec_ext->header_sign, RSA_SIGN_BYTE_LEN);
+ memset(sec_ext->header_sign, 0, RSA_SIGN_BYTE_LEN);
+
+ fprintf(stdout, "\nCheck RSA Signatures\n");
+ fprintf(stdout, "#########################\n");
+ fprintf(stdout, "CSK Block Signature: ");
+ if (verify_rsa_signature(sec_ext->kak_key,
+ MAX_RSA_DER_BYTE_LEN,
+ &sec_ext->csk_keys[0][0],
+ sizeof(sec_ext->csk_keys),
+ "CSK Block Signature: ",
+ sec_ext->csk_sign) != 0) {
+ fprintf(stdout, "ERROR\n");
+ goto ver_error;
+ }
+ fprintf(stdout, "OK\n");
+
+ if (opts.key_index != -1) {
+ fprintf(stdout, "Image Signature: ");
+ if (verify_rsa_signature(sec_ext->csk_keys[opts.key_index],
+ MAX_RSA_DER_BYTE_LEN,
+ image, main_hdr->boot_image_size,
+ "Image Signature: ",
+ sec_ext->image_sign) != 0) {
+ fprintf(stdout, "ERROR\n");
+ goto ver_error;
+ }
+ fprintf(stdout, "OK\n");
+
+ fprintf(stdout, "Header Signature: ");
+ if (verify_rsa_signature(sec_ext->csk_keys[opts.key_index],
+ MAX_RSA_DER_BYTE_LEN,
+ (uint8_t *)main_hdr,
+ main_hdr->prolog_size,
+ "Header Signature: ",
+ signature) != 0) {
+ fprintf(stdout, "ERROR\n");
+ goto ver_error;
+ }
+ fprintf(stdout, "OK\n");
+ } else {
+ fprintf(stdout, "SKIP Image and Header Signatures");
+ fprintf(stdout, " check (undefined key index)\n");
+ }
+
+ rval = 0;
+
+ver_error:
+ memcpy(sec_ext->header_sign, signature, RSA_SIGN_BYTE_LEN);
+ return rval;
+}
+
+/*******************************************************************************
+ * verify_and_copy_file_name_entry
+ * INPUT:
+ * element_name
+ * element
+ * OUTPUT:
+ * copy_to
+ * RETURN:
+ * 0 on success
+ */
+int verify_and_copy_file_name_entry(const char *element_name,
+ const char *element, char *copy_to)
+{
+ int element_length = strlen(element);
+
+ if (element_length >= MAX_FILENAME) {
+ fprintf(stderr, "The file name %s for %s is too long (%d). ",
+ element, element_name, element_length);
+ fprintf(stderr, "Maximum allowed %d characters!\n",
+ MAX_FILENAME);
+ return -1;
+ } else if (element_length == 0) {
+ fprintf(stderr, "The file name for %s is empty!\n",
+ element_name);
+ return -1;
+ }
+ memcpy(copy_to, element, element_length);
+
+ return 0;
+}
+
+/*******************************************************************************
+ * parse_sec_config_file
+ * Read the secure boot configuration from a file
+ * into internal structures
+ * INPUT:
+ * filename File name
+ * OUTPUT:
+ * none
+ * RETURN:
+ * 0 on success
+ */
+int parse_sec_config_file(char *filename)
+{
+ config_t sec_cfg;
+ int array_sz, element, rval = -1;
+ const char *cfg_string;
+ int32_t cfg_int32;
+ const config_setting_t *csk_array, *control_array;
+ sec_options *sec_opt = 0;
+
+ config_init(&sec_cfg);
+
+ if (config_read_file(&sec_cfg, filename) != CONFIG_TRUE) {
+ fprintf(stderr, "Failed to read data from config file ");
+ fprintf(stderr, "%s\n\t%s at line %d\n",
+ filename, config_error_text(&sec_cfg),
+ config_error_line(&sec_cfg));
+ goto exit_parse;
+ }
+
+ sec_opt = (sec_options *)calloc(sizeof(sec_options), 1);
+ if (sec_opt == 0) {
+ fprintf(stderr,
+ "Cannot allocate memory for secure boot options!\n");
+ goto exit_parse;
+ }
+
+ /* KAK file name */
+ if (config_lookup_string(&sec_cfg, "kak_key_file",
+ &cfg_string) != CONFIG_TRUE) {
+ fprintf(stderr, "The \"kak_key_file\" undefined!\n");
+ goto exit_parse;
+ }
+ if (verify_and_copy_file_name_entry("kak_key_file",
+ cfg_string, sec_opt->kak_key_file))
+ goto exit_parse;
+
+
+ /* AES file name - can be empty/undefined */
+ if (config_lookup_string(&sec_cfg, "aes_key_file",
+ &cfg_string) == CONFIG_TRUE) {
+ if (verify_and_copy_file_name_entry("aes_key_file",
+ cfg_string,
+ sec_opt->aes_key_file))
+ goto exit_parse;
+ }
+
+ /* CSK file names array */
+ csk_array = config_lookup(&sec_cfg, "csk_key_file");
+ if (csk_array == NULL) {
+ fprintf(stderr, "The \"csk_key_file\" undefined!\n");
+ goto exit_parse;
+ }
+ array_sz = config_setting_length(csk_array);
+ if (array_sz > CSK_ARR_SZ) {
+ fprintf(stderr, "The \"csk_key_file\" array is too big! ");
+ fprintf(stderr, "Only first %d elements will be used\n",
+ CSK_ARR_SZ);
+ array_sz = CSK_ARR_SZ;
+ } else if (array_sz == 0) {
+ fprintf(stderr, "The \"csk_key_file\" array is empty!\n");
+ goto exit_parse;
+ }
+
+ for (element = 0; element < array_sz; element++) {
+ cfg_string = config_setting_get_string_elem(csk_array, element);
+ if (verify_and_copy_file_name_entry(
+ "csk_key_file", cfg_string,
+ sec_opt->csk_key_file[element])) {
+ fprintf(stderr, "Bad csk_key_file[%d] entry!\n",
+ element);
+ goto exit_parse;
+ }
+ }
+
+ /* JTAG options */
+ if (config_lookup_bool(&sec_cfg, "jtag.enable",
+ &cfg_int32) != CONFIG_TRUE) {
+ fprintf(stderr, "Error obtaining \"jtag.enable\" element. ");
+ fprintf(stderr, "Using default - FALSE\n");
+ cfg_int32 = 0;
+ }
+ sec_opt->jtag_enable = cfg_int32;
+
+ if (config_lookup_int(&sec_cfg, "jtag.delay",
+ &cfg_int32) != CONFIG_TRUE) {
+ fprintf(stderr, "Error obtaining \"jtag.delay\" element. ");
+ fprintf(stderr, "Using default - 0us\n");
+ cfg_int32 = 0;
+ }
+ sec_opt->jtag_delay = cfg_int32;
+
+ /* eFUSE option */
+ if (config_lookup_bool(&sec_cfg, "efuse_disable",
+ &cfg_int32) != CONFIG_TRUE) {
+ fprintf(stderr, "Error obtaining \"efuse_disable\" element. ");
+ fprintf(stderr, "Using default - TRUE\n");
+ cfg_int32 = 1;
+ }
+ sec_opt->efuse_disable = cfg_int32;
+
+ /* Box ID option */
+ if (config_lookup_int(&sec_cfg, "box_id", &cfg_int32) != CONFIG_TRUE) {
+ fprintf(stderr, "Error obtaining \"box_id\" element. ");
+ fprintf(stderr, "Using default - 0x0\n");
+ cfg_int32 = 0;
+ }
+ sec_opt->box_id = cfg_int32;
+
+ /* Flash ID option */
+ if (config_lookup_int(&sec_cfg, "flash_id",
+ &cfg_int32) != CONFIG_TRUE) {
+ fprintf(stderr, "Error obtaining \"flash_id\" element. ");
+ fprintf(stderr, "Using default - 0x0\n");
+ cfg_int32 = 0;
+ }
+ sec_opt->flash_id = cfg_int32;
+
+ /* CSK index option */
+ if (config_lookup_int(&sec_cfg, "csk_key_index",
+ &cfg_int32) != CONFIG_TRUE) {
+ fprintf(stderr, "Error obtaining \"flash_id\" element. ");
+ fprintf(stderr, "Using default - 0x0\n");
+ cfg_int32 = 0;
+ }
+ sec_opt->csk_index = cfg_int32;
+
+ /* Secure boot control array */
+ control_array = config_lookup(&sec_cfg, "control");
+ if (control_array != NULL) {
+ array_sz = config_setting_length(control_array);
+ if (array_sz == 0)
+ fprintf(stderr, "The \"control\" array is empty!\n");
+ } else {
+ fprintf(stderr, "The \"control\" is undefined!\n");
+ array_sz = 0;
+ }
+
+ for (element = 0; element < CP_CTRL_EL_ARRAY_SZ; element++) {
+ sec_opt->cp_ctrl_arr[element] =
+ config_setting_get_int_elem(control_array, element * 2);
+ sec_opt->cp_efuse_arr[element] =
+ config_setting_get_int_elem(control_array,
+ element * 2 + 1);
+ }
+
+ opts.sec_opts = sec_opt;
+ rval = 0;
+
+exit_parse:
+ config_destroy(&sec_cfg);
+ if (sec_opt && (rval != 0))
+ free(sec_opt);
+ return rval;
+} /* end of parse_sec_config_file */
+
+int format_sec_ext(char *filename, FILE *out_fd)
+{
+ ext_header_t header;
+ sec_entry_t sec_ext;
+ int index;
+ int written;
+
+#define DER_BUF_SZ 1600
+
+ /* First, parse the configuration file */
+ if (parse_sec_config_file(filename)) {
+ fprintf(stderr,
+ "failed parsing configuration file %s\n", filename);
+ return 1;
+ }
+
+ /* Everything except signatures can be created at this stage */
+ header.type = EXT_TYPE_SECURITY;
+ header.offset = 0;
+ header.size = sizeof(sec_entry_t);
+ header.reserved = 0;
+
+ /* Bring up RSA context and read private keys from their files */
+ for (index = 0; index < (CSK_ARR_SZ + 1); index++) {
+ /* for every private key file */
+ mbedtls_pk_context *pk_ctx = (index == CSK_ARR_SZ) ?
+ &opts.sec_opts->kak_pk :
+ &opts.sec_opts->csk_pk[index];
+ char *fname = (index == CSK_ARR_SZ) ?
+ opts.sec_opts->kak_key_file :
+ opts.sec_opts->csk_key_file[index];
+ uint8_t *out_der_key = (index == CSK_ARR_SZ) ?
+ sec_ext.kak_key :
+ sec_ext.csk_keys[index];
+ size_t output_len;
+ unsigned char output_buf[DER_BUF_SZ];
+ unsigned char *der_buf_start;
+
+ /* Handle invalid/reserved file names */
+ if (strncmp(CSK_ARR_EMPTY_FILE, fname,
+ strlen(CSK_ARR_EMPTY_FILE)) == 0) {
+ if (opts.sec_opts->csk_index == index) {
+ fprintf(stderr,
+ "CSK file with index %d cannot be %s\n",
+ index, CSK_ARR_EMPTY_FILE);
+ return 1;
+ } else if (index == CSK_ARR_SZ) {
+ fprintf(stderr, "KAK file name cannot be %s\n",
+ CSK_ARR_EMPTY_FILE);
+ return 1;
+ }
+ /* this key will be empty in CSK array */
+ continue;
+ }
+
+ mbedtls_pk_init(pk_ctx);
+ /* Read the private RSA key into the context
+ * and verify it (no password)
+ */
+ if (mbedtls_pk_parse_keyfile(pk_ctx, fname, "") != 0) {
+ fprintf(stderr,
+ "Cannot read RSA private key file %s\n", fname);
+ return 1;
+ }
+
+ /* Create a public key out of private one
+ * and store it in DER format
+ */
+ output_len = mbedtls_pk_write_pubkey_der(pk_ctx,
+ output_buf,
+ DER_BUF_SZ);
+ if (output_len < 0) {
+ fprintf(stderr,
+ "Failed to create DER coded PUB key (%s)\n",
+ fname);
+ return 1;
+ }
+
+ /* Data in the output buffer is aligned to the buffer end */
+ der_buf_start = output_buf + sizeof(output_buf) - output_len;
+ /* In the header DER data is aligned
+ * to the start of appropriate field
+ */
+ bzero(out_der_key, MAX_RSA_DER_BYTE_LEN);
+ memcpy(out_der_key, der_buf_start, output_len);
+
+ } /* for every private key file */
+
+ /* The CSK block signature can be created here */
+ if (create_rsa_signature(&opts.sec_opts->kak_pk,
+ &sec_ext.csk_keys[0][0],
+ sizeof(sec_ext.csk_keys),
+ opts.sec_opts->csk_key_file[
+ opts.sec_opts->csk_index],
+ sec_ext.csk_sign) != 0) {
+ fprintf(stderr, "Failed to sign CSK keys block!\n");
+ return 1;
+ }
+
+ /* Check that everything is correct */
+ if (verify_rsa_signature(sec_ext.kak_key,
+ MAX_RSA_DER_BYTE_LEN,
+ &sec_ext.csk_keys[0][0],
+ sizeof(sec_ext.csk_keys),
+ opts.sec_opts->kak_key_file,
+ sec_ext.csk_sign) != 0) {
+ fprintf(stderr, "Failed to verify CSK keys block signature!\n");
+ return 1;
+ }
+
+ /* AES encryption stuff */
+ if (strlen(opts.sec_opts->aes_key_file) != 0) {
+ FILE *in_fd;
+
+ in_fd = fopen(opts.sec_opts->aes_key_file, "rb");
+ if (in_fd == NULL) {
+ fprintf(stderr, "Failed to open AES key file %s\n",
+ opts.sec_opts->aes_key_file);
+ return 1;
+ }
+
+ /* Read the AES key in ASCII format byte by byte */
+ for (index = 0; index < AES_KEY_BYTE_LEN; index++) {
+ if (fscanf(in_fd, "%02hhx",
+ opts.sec_opts->aes_key + index) != 1) {
+ fprintf(stderr,
+ "Failed to read AES key byte %d ",
+ index);
+ fprintf(stderr,
+ "from file %s\n",
+ opts.sec_opts->aes_key_file);
+ fclose(in_fd);
+ return 1;
+ }
+ }
+ fclose(in_fd);
+ sec_ext.encrypt_en = 1;
+ } else {
+ sec_ext.encrypt_en = 0;
+ }
+
+ /* Fill the rest of the trusted boot extension fields */
+ sec_ext.box_id = opts.sec_opts->box_id;
+ sec_ext.flash_id = opts.sec_opts->flash_id;
+ sec_ext.efuse_dis = opts.sec_opts->efuse_disable;
+ sec_ext.jtag_delay = opts.sec_opts->jtag_delay;
+ sec_ext.jtag_en = opts.sec_opts->jtag_enable;
+
+ memcpy(sec_ext.cp_ctrl_arr,
+ opts.sec_opts->cp_ctrl_arr,
+ sizeof(uint32_t) * CP_CTRL_EL_ARRAY_SZ);
+ memcpy(sec_ext.cp_efuse_arr,
+ opts.sec_opts->cp_efuse_arr,
+ sizeof(uint32_t) * CP_CTRL_EL_ARRAY_SZ);
+
+ /* Write the resulting extension to file
+ * (image and header signature fields are still empty)
+ */
+
+ /* Write extension header */
+ written = fwrite(&header, sizeof(ext_header_t), 1, out_fd);
+ if (written != 1) {
+ fprintf(stderr,
+ "Failed to write SEC extension header to the file\n");
+ return 1;
+ }
+ /* Write extension body */
+ written = fwrite(&sec_ext, sizeof(sec_entry_t), 1, out_fd);
+ if (written != 1) {
+ fprintf(stderr,
+ "Failed to write SEC extension body to the file\n");
+ return 1;
+ }
+
+ return 0;
+}
+
+/*******************************************************************************
+ * finalize_secure_ext
+ * Make final changes to secure extension - calculate image and header
+ * signatures and encrypt the image if needed.
+ * The main header checksum and image size fields updated accordingly
+ * INPUT:
+ * header Main header
+ * prolog_buf the entire prolog buffer
+ * prolog_size prolog buffer length
+ * image_buf buffer containing the input binary image
+ * image_size image buffer size.
+ * OUTPUT:
+ * none
+ * RETURN:
+ * 0 on success
+ */
+int finalize_secure_ext(header_t *header,
+ uint8_t *prolog_buf, uint32_t prolog_size,
+ uint8_t *image_buf, int image_size)
+{
+ int cur_ext, offset;
+ uint8_t *final_image = image_buf;
+ uint32_t final_image_sz = image_size;
+ uint8_t hdr_sign[RSA_SIGN_BYTE_LEN];
+ sec_entry_t *sec_ext = 0;
+
+ /* Find the Trusted Boot Header between available extensions */
+ for (cur_ext = 0, offset = sizeof(header_t);
+ cur_ext < header->ext_count; cur_ext++) {
+ ext_header_t *ext_hdr = (ext_header_t *)(prolog_buf + offset);
+
+ if (ext_hdr->type == EXT_TYPE_SECURITY) {
+ sec_ext = (sec_entry_t *)(prolog_buf + offset +
+ sizeof(ext_header_t) + ext_hdr->offset);
+ break;
+ }
+
+ offset += sizeof(ext_header_t);
+ /* If offset is Zero, the extension follows its header */
+ if (ext_hdr->offset == 0)
+ offset += ext_hdr->size;
+ }
+
+ if (sec_ext == 0) {
+ fprintf(stderr, "Error: No Trusted Boot extension found!\n");
+ return -1;
+ }
+
+ if (sec_ext->encrypt_en) {
+ /* Encrypt the image if needed */
+ fprintf(stdout, "Encrypting the image...\n");
+
+ if (image_encrypt(image_buf, image_size) != 0) {
+ fprintf(stderr, "Failed to encrypt the image!\n");
+ return -1;
+ }
+
+ /* Image size and checksum should be updated after encryption.
+ * This way the image could be verified by the BootROM
+ * before decryption.
+ */
+ final_image = opts.sec_opts->encrypted_image;
+ final_image_sz = opts.sec_opts->enc_image_sz;
+
+ header->boot_image_size = final_image_sz;
+ header->boot_image_checksum =
+ checksum32((uint32_t *)final_image, final_image_sz);
+ } /* AES encryption */
+
+ /* Create the image signature first, since it will be later
+ * signed along with the header signature
+ */
+ if (create_rsa_signature(&opts.sec_opts->csk_pk[
+ opts.sec_opts->csk_index],
+ final_image, final_image_sz,
+ opts.sec_opts->csk_key_file[
+ opts.sec_opts->csk_index],
+ sec_ext->image_sign) != 0) {
+ fprintf(stderr, "Failed to sign image!\n");
+ return -1;
+ }
+ /* Check that the image signature is correct */
+ if (verify_rsa_signature(sec_ext->csk_keys[opts.sec_opts->csk_index],
+ MAX_RSA_DER_BYTE_LEN,
+ final_image, final_image_sz,
+ opts.sec_opts->csk_key_file[
+ opts.sec_opts->csk_index],
+ sec_ext->image_sign) != 0) {
+ fprintf(stderr, "Failed to verify image signature!\n");
+ return -1;
+ }
+
+ /* Sign the headers and all the extensions block
+ * when the header signature field is empty
+ */
+ if (create_rsa_signature(&opts.sec_opts->csk_pk[
+ opts.sec_opts->csk_index],
+ prolog_buf, prolog_size,
+ opts.sec_opts->csk_key_file[
+ opts.sec_opts->csk_index],
+ hdr_sign) != 0) {
+ fprintf(stderr, "Failed to sign header!\n");
+ return -1;
+ }
+ /* Check that the header signature is correct */
+ if (verify_rsa_signature(sec_ext->csk_keys[opts.sec_opts->csk_index],
+ MAX_RSA_DER_BYTE_LEN,
+ prolog_buf, prolog_size,
+ opts.sec_opts->csk_key_file[
+ opts.sec_opts->csk_index],
+ hdr_sign) != 0) {
+ fprintf(stderr, "Failed to verify header signature!\n");
+ return -1;
+ }
+
+ /* Finally, copy the header signature into the trusted boot extension */
+ memcpy(sec_ext->header_sign, hdr_sign, RSA_SIGN_BYTE_LEN);
+
+ return 0;
+}
+
+#endif /* CONFIG_MVEBU_SECURE_BOOT */
+
+
+#define FMT_HEX 0
+#define FMT_DEC 1
+#define FMT_BIN 2
+#define FMT_NONE 3
+
+void do_print_field(unsigned int value, char *name,
+ int start, int size, int format)
+{
+ fprintf(stdout, "[0x%05x : 0x%05x] %-26s",
+ start, start + size - 1, name);
+
+ switch (format) {
+ case FMT_HEX:
+ printf("0x%x\n", value);
+ break;
+ case FMT_DEC:
+ printf("%d\n", value);
+ break;
+ default:
+ printf("\n");
+ break;
+ }
+}
+
+#define print_field(st, type, field, hex, base) \
+ do_print_field((int)st->field, #field, \
+ base + offsetof(type, field), sizeof(st->field), hex)
+
+int print_header(uint8_t *buf, int base)
+{
+ header_t *main_hdr;
+
+ main_hdr = (header_t *)buf;
+
+ fprintf(stdout, "########### Header ##############\n");
+ print_field(main_hdr, header_t, magic, FMT_HEX, base);
+ print_field(main_hdr, header_t, prolog_size, FMT_DEC, base);
+ print_field(main_hdr, header_t, prolog_checksum, FMT_HEX, base);
+ print_field(main_hdr, header_t, boot_image_size, FMT_DEC, base);
+ print_field(main_hdr, header_t, boot_image_checksum, FMT_HEX, base);
+ print_field(main_hdr, header_t, rsrvd0, FMT_HEX, base);
+ print_field(main_hdr, header_t, load_addr, FMT_HEX, base);
+ print_field(main_hdr, header_t, exec_addr, FMT_HEX, base);
+ print_field(main_hdr, header_t, uart_cfg, FMT_HEX, base);
+ print_field(main_hdr, header_t, baudrate, FMT_HEX, base);
+ print_field(main_hdr, header_t, ext_count, FMT_DEC, base);
+ print_field(main_hdr, header_t, aux_flags, FMT_HEX, base);
+ print_field(main_hdr, header_t, io_arg_0, FMT_HEX, base);
+ print_field(main_hdr, header_t, io_arg_1, FMT_HEX, base);
+ print_field(main_hdr, header_t, io_arg_2, FMT_HEX, base);
+ print_field(main_hdr, header_t, io_arg_3, FMT_HEX, base);
+ print_field(main_hdr, header_t, rsrvd1, FMT_HEX, base);
+ print_field(main_hdr, header_t, rsrvd2, FMT_HEX, base);
+ print_field(main_hdr, header_t, rsrvd3, FMT_HEX, base);
+
+ return sizeof(header_t);
+}
+
+int print_ext_hdr(ext_header_t *ext_hdr, int base)
+{
+ print_field(ext_hdr, ext_header_t, type, FMT_HEX, base);
+ print_field(ext_hdr, ext_header_t, offset, FMT_HEX, base);
+ print_field(ext_hdr, ext_header_t, reserved, FMT_HEX, base);
+ print_field(ext_hdr, ext_header_t, size, FMT_DEC, base);
+
+ return base + sizeof(ext_header_t);
+}
+
+void print_sec_ext(ext_header_t *ext_hdr, int base)
+{
+ sec_entry_t *sec_entry;
+ uint32_t new_base;
+
+ fprintf(stdout, "\n########### Secure extension ###########\n");
+
+ new_base = print_ext_hdr(ext_hdr, base);
+
+ sec_entry = (sec_entry_t *)(ext_hdr + 1);
+
+ do_print_field(0, "KAK key", new_base, MAX_RSA_DER_BYTE_LEN, FMT_NONE);
+ new_base += MAX_RSA_DER_BYTE_LEN;
+ print_field(sec_entry, sec_entry_t, jtag_delay, FMT_DEC, base);
+ print_field(sec_entry, sec_entry_t, box_id, FMT_HEX, base);
+ print_field(sec_entry, sec_entry_t, flash_id, FMT_HEX, base);
+ print_field(sec_entry, sec_entry_t, encrypt_en, FMT_DEC, base);
+ print_field(sec_entry, sec_entry_t, efuse_dis, FMT_DEC, base);
+ new_base += 6 * sizeof(uint32_t);
+ do_print_field(0, "header signature",
+ new_base, RSA_SIGN_BYTE_LEN, FMT_NONE);
+ new_base += RSA_SIGN_BYTE_LEN;
+ do_print_field(0, "image signature",
+ new_base, RSA_SIGN_BYTE_LEN, FMT_NONE);
+ new_base += RSA_SIGN_BYTE_LEN;
+ do_print_field(0, "CSK keys", new_base,
+ CSK_ARR_SZ * MAX_RSA_DER_BYTE_LEN, FMT_NONE);
+ new_base += CSK_ARR_SZ * MAX_RSA_DER_BYTE_LEN;
+ do_print_field(0, "CSK block signature",
+ new_base, RSA_SIGN_BYTE_LEN, FMT_NONE);
+ new_base += RSA_SIGN_BYTE_LEN;
+ do_print_field(0, "control", new_base,
+ CP_CTRL_EL_ARRAY_SZ * 2, FMT_NONE);
+
+}
+
+void print_bin_ext(ext_header_t *ext_hdr, int base)
+{
+ fprintf(stdout, "\n########### Binary extension ###########\n");
+ base = print_ext_hdr(ext_hdr, base);
+ do_print_field(0, "binary image", base, ext_hdr->size, FMT_NONE);
+}
+
+int print_extension(void *buf, int base, int count, int ext_size)
+{
+ ext_header_t *ext_hdr = buf;
+ int pad = ext_size;
+ int curr_size;
+
+ while (count--) {
+ if (ext_hdr->type == EXT_TYPE_BINARY)
+ print_bin_ext(ext_hdr, base);
+ else if (ext_hdr->type == EXT_TYPE_SECURITY)
+ print_sec_ext(ext_hdr, base);
+
+ curr_size = sizeof(ext_header_t) + ext_hdr->size;
+ base += curr_size;
+ pad -= curr_size;
+ ext_hdr = (ext_header_t *)((uintptr_t)ext_hdr + curr_size);
+ }
+
+ if (pad)
+ do_print_field(0, "padding", base, pad, FMT_NONE);
+
+ return ext_size;
+}
+
+int parse_image(uint8_t *buf, int size)
+{
+ int base = 0;
+ int ret = 1;
+ header_t *main_hdr;
+ uint32_t checksum, prolog_checksum;
+
+
+ fprintf(stdout,
+ "################### Prolog Start ######################\n\n");
+ main_hdr = (header_t *)buf;
+ base += print_header(buf, base);
+
+ if (main_hdr->ext_count)
+ base += print_extension(buf + base, base,
+ main_hdr->ext_count,
+ main_hdr->prolog_size -
+ sizeof(header_t));
+
+ if (base < main_hdr->prolog_size) {
+ fprintf(stdout, "\n########### Padding ##############\n");
+ do_print_field(0, "prolog padding",
+ base, main_hdr->prolog_size - base, FMT_HEX);
+ base = main_hdr->prolog_size;
+ }
+ fprintf(stdout,
+ "\n################### Prolog End ######################\n");
+
+ fprintf(stdout,
+ "\n################### Boot image ######################\n");
+
+ do_print_field(0, "boot image", base, size - base - 4, FMT_NONE);
+
+ fprintf(stdout,
+ "################### Image end ########################\n");
+
+ /* Check sanity for certain values */
+ printf("\nChecking values:\n");
+
+ if (main_hdr->magic == MAIN_HDR_MAGIC) {
+ fprintf(stdout, "Headers magic: OK!\n");
+ } else {
+ fprintf(stderr,
+ "\n****** ERROR: HEADER MAGIC 0x%08x != 0x%08x\n",
+ main_hdr->magic, MAIN_HDR_MAGIC);
+ goto error;
+ }
+
+ /* headers checksum */
+ /* clear the checksum field in header to calculate checksum */
+ prolog_checksum = main_hdr->prolog_checksum;
+ main_hdr->prolog_checksum = 0;
+ checksum = checksum32((uint32_t *)buf, main_hdr->prolog_size);
+
+ if (checksum == prolog_checksum) {
+ fprintf(stdout, "Headers checksum: OK!\n");
+ } else {
+ fprintf(stderr,
+ "\n***** ERROR: BAD HEADER CHECKSUM 0x%08x != 0x%08x\n",
+ checksum, prolog_checksum);
+ goto error;
+ }
+
+ /* boot image checksum */
+ checksum = checksum32((uint32_t *)(buf + main_hdr->prolog_size),
+ main_hdr->boot_image_size);
+ if (checksum == main_hdr->boot_image_checksum) {
+ fprintf(stdout, "Image checksum: OK!\n");
+ } else {
+ fprintf(stderr,
+ "\n****** ERROR: BAD IMAGE CHECKSUM 0x%08x != 0x%08x\n",
+ checksum, main_hdr->boot_image_checksum);
+ goto error;
+ }
+
+#ifdef CONFIG_MVEBU_SECURE_BOOT
+ /* RSA signatures */
+ if (main_hdr->ext_count) {
+ uint8_t ext_num = main_hdr->ext_count;
+ ext_header_t *ext_hdr = (ext_header_t *)(main_hdr + 1);
+ unsigned char hash[32];
+ int i;
+
+ while (ext_num--) {
+ if (ext_hdr->type == EXT_TYPE_SECURITY) {
+ sec_entry_t *sec_entry =
+ (sec_entry_t *)(ext_hdr + 1);
+
+ ret = verify_secure_header_signatures(
+ main_hdr, sec_entry);
+ if (ret != 0) {
+ fprintf(stderr,
+ "\n****** FAILED TO VERIFY ");
+ fprintf(stderr,
+ "RSA SIGNATURES ********\n");
+ goto error;
+ }
+
+ mbedtls_sha256_ret(sec_entry->kak_key,
+ MAX_RSA_DER_BYTE_LEN, hash, 0);
+ fprintf(stdout,
+ ">>>>>>>>>> KAK KEY HASH >>>>>>>>>>\n");
+ fprintf(stdout, "SHA256: ");
+ for (i = 0; i < 32; i++)
+ fprintf(stdout, "%02X", hash[i]);
+
+ fprintf(stdout,
+ "\n<<<<<<<<< KAK KEY HASH <<<<<<<<<\n");
+
+ break;
+ }
+ ext_hdr =
+ (ext_header_t *)((uint8_t *)(ext_hdr + 1) +
+ ext_hdr->size);
+ }
+ }
+#endif
+
+ ret = 0;
+error:
+ return ret;
+}
+
+int format_bin_ext(char *filename, FILE *out_fd)
+{
+ ext_header_t header;
+ FILE *in_fd;
+ int size, written;
+ int aligned_size, pad_bytes;
+ char c;
+
+ in_fd = fopen(filename, "rb");
+ if (in_fd == NULL) {
+ fprintf(stderr, "failed to open bin extension file %s\n",
+ filename);
+ return 1;
+ }
+
+ size = get_file_size(filename);
+ if (size <= 0) {
+ fprintf(stderr, "bin extension file size is bad\n");
+ return 1;
+ }
+
+ /* Align extension size to 8 bytes */
+ aligned_size = (size + 7) & (~7);
+ pad_bytes = aligned_size - size;
+
+ header.type = EXT_TYPE_BINARY;
+ header.offset = 0;
+ header.size = aligned_size;
+ header.reserved = 0;
+
+ /* Write header */
+ written = fwrite(&header, sizeof(ext_header_t), 1, out_fd);
+ if (written != 1) {
+ fprintf(stderr, "failed writing header to extension file\n");
+ return 1;
+ }
+
+ /* Write image */
+ while (size--) {
+ c = getc(in_fd);
+ fputc(c, out_fd);
+ }
+
+ while (pad_bytes--)
+ fputc(0, out_fd);
+
+ fclose(in_fd);
+
+ return 0;
+}
+
+/* ****************************************
+ *
+ * Write all extensions (binary, secure
+ * extensions) to file
+ *
+ * ****************************************/
+
+int format_extensions(char *ext_filename)
+{
+ FILE *out_fd;
+ int ret = 0;
+
+ out_fd = fopen(ext_filename, "wb");
+ if (out_fd == NULL) {
+ fprintf(stderr, "failed to open extension output file %s",
+ ext_filename);
+ return 1;
+ }
+
+ if (strncmp(opts.bin_ext_file, "NA", MAX_FILENAME)) {
+ if (format_bin_ext(opts.bin_ext_file, out_fd)) {
+ ret = 1;
+ goto error;
+ }
+ }
+#ifdef CONFIG_MVEBU_SECURE_BOOT
+ if (strncmp(opts.sec_cfg_file, "NA", MAX_FILENAME)) {
+ if (format_sec_ext(opts.sec_cfg_file, out_fd)) {
+ ret = 1;
+ goto error;
+ }
+ }
+#endif
+
+error:
+ fflush(out_fd);
+ fclose(out_fd);
+ return ret;
+}
+
+void update_uart(header_t *header)
+{
+ header->uart_cfg = 0;
+ header->baudrate = 0;
+
+ if (opts.disable_print)
+ uart_set_mode(header->uart_cfg, UART_MODE_DISABLE);
+
+ if (opts.baudrate)
+ header->baudrate = (opts.baudrate / 1200);
+}
+
+/* ****************************************
+ *
+ * Write the image prolog, i.e.
+ * main header and extensions, to file
+ *
+ * ****************************************/
+
+int write_prolog(int ext_cnt, char *ext_filename,
+ uint8_t *image_buf, int image_size, FILE *out_fd)
+{
+ header_t *header;
+ int main_hdr_size = sizeof(header_t);
+ int prolog_size = main_hdr_size;
+ FILE *ext_fd;
+ char *buf;
+ int written, read;
+ int ret = 1;
+
+
+ if (ext_cnt)
+ prolog_size += get_file_size(ext_filename);
+
+ prolog_size = ((prolog_size + PROLOG_ALIGNMENT) &
+ (~(PROLOG_ALIGNMENT-1)));
+
+ /* Allocate a zeroed buffer to zero the padding bytes */
+ buf = calloc(prolog_size, 1);
+ if (buf == NULL) {
+ fprintf(stderr, "Error: failed allocating checksum buffer\n");
+ return 1;
+ }
+
+ header = (header_t *)buf;
+ header->magic = MAIN_HDR_MAGIC;
+ header->prolog_size = prolog_size;
+ header->load_addr = opts.load_addr;
+ header->exec_addr = opts.exec_addr;
+ header->io_arg_0 = opts.nfc_io_args;
+ header->ext_count = ext_cnt;
+ header->aux_flags = 0;
+ header->boot_image_size = (image_size + 3) & (~0x3);
+ header->boot_image_checksum = checksum32((uint32_t *)image_buf,
+ image_size);
+
+ update_uart(header);
+
+ /* Populate buffer with main header and extensions */
+ if (ext_cnt) {
+ ext_fd = fopen(ext_filename, "rb");
+ if (ext_fd == NULL) {
+ fprintf(stderr,
+ "Error: failed to open extensions file\n");
+ goto error;
+ }
+
+ read = fread(&buf[main_hdr_size],
+ get_file_size(ext_filename), 1, ext_fd);
+ if (read != 1) {
+ fprintf(stderr,
+ "Error: failed to open extensions file\n");
+ goto error;
+ }
+
+#ifdef CONFIG_MVEBU_SECURE_BOOT
+ /* Secure boot mode? */
+ if (opts.sec_opts != 0) {
+ ret = finalize_secure_ext(header, (uint8_t *)buf,
+ prolog_size, image_buf,
+ image_size);
+ if (ret != 0) {
+ fprintf(stderr, "Error: failed to handle ");
+ fprintf(stderr, "secure extension!\n");
+ goto error;
+ }
+ } /* secure boot mode */
+#endif
+ }
+
+ /* Update the total prolog checksum */
+ header->prolog_checksum = checksum32((uint32_t *)buf, prolog_size);
+
+ /* Now spill everything to output file */
+ written = fwrite(buf, prolog_size, 1, out_fd);
+ if (written != 1) {
+ fprintf(stderr,
+ "Error: failed to write prolog to output file\n");
+ goto error;
+ }
+
+ ret = 0;
+
+error:
+ free(buf);
+ return ret;
+}
+
+int write_boot_image(uint8_t *buf, uint32_t image_size, FILE *out_fd)
+{
+ int written;
+
+ written = fwrite(buf, image_size, 1, out_fd);
+ if (written != 1) {
+ fprintf(stderr, "Error: Failed to write boot image\n");
+ goto error;
+ }
+
+ return 0;
+error:
+ return 1;
+}
+
+int main(int argc, char *argv[])
+{
+ char in_file[MAX_FILENAME+1] = { 0 };
+ char out_file[MAX_FILENAME+1] = { 0 };
+ char ext_file[MAX_FILENAME+1] = { 0 };
+ FILE *in_fd = NULL;
+ FILE *out_fd = NULL;
+ int parse = 0;
+ int ext_cnt = 0;
+ int opt;
+ int ret = 0;
+ int image_size, file_size;
+ uint8_t *image_buf = NULL;
+ int read;
+ size_t len;
+ uint32_t nand_block_size_kb, mlc_nand;
+
+ /* Create temporary file for building extensions
+ * Use process ID for allowing multiple parallel runs
+ */
+ snprintf(ext_file, MAX_FILENAME, "/tmp/ext_file-%x", getpid());
+
+ while ((opt = getopt(argc, argv, "hpms:i:l:e:a:b:u:n:t:c:k:")) != -1) {
+ switch (opt) {
+ case 'h':
+ usage();
+ break;
+ case 'l':
+ opts.load_addr = strtoul(optarg, NULL, 0);
+ break;
+ case 'e':
+ opts.exec_addr = strtoul(optarg, NULL, 0);
+ break;
+ case 'm':
+ opts.disable_print = 1;
+ break;
+ case 'u':
+ opts.baudrate = strtoul(optarg, NULL, 0);
+ break;
+ case 'b':
+ strncpy(opts.bin_ext_file, optarg, MAX_FILENAME);
+ ext_cnt++;
+ break;
+ case 'p':
+ parse = 1;
+ break;
+ case 'n':
+ nand_block_size_kb = strtoul(optarg, NULL, 0);
+ opts.nfc_io_args |= (nand_block_size_kb / 64);
+ break;
+ case 't':
+ mlc_nand = 0;
+ if (!strncmp("MLC", optarg, 3))
+ mlc_nand = 1;
+ opts.nfc_io_args |= (mlc_nand << 8);
+ break;
+#ifdef CONFIG_MVEBU_SECURE_BOOT
+ case 'c': /* SEC extension */
+ strncpy(opts.sec_cfg_file, optarg, MAX_FILENAME);
+ ext_cnt++;
+ break;
+ case 'k':
+ opts.key_index = strtoul(optarg, NULL, 0);
+ break;
+#endif
+ default: /* '?' */
+ usage_err("Unknown argument");
+ exit(EXIT_FAILURE);
+ }
+ }
+
+ /* Check validity of inputes */
+ if (opts.load_addr % 8)
+ usage_err("Load address must be 8 bytes aligned");
+
+ if (opts.baudrate % 1200)
+ usage_err("Baudrate must be a multiple of 1200");
+
+ /* The remaining arguments are the input
+ * and potentially output file
+ */
+ /* Input file must exist so exit if not */
+ if (optind >= argc)
+ usage_err("missing input file name");
+
+ len = strlen(argv[optind]);
+ if (len > MAX_FILENAME)
+ usage_err("file name too long");
+ memcpy(in_file, argv[optind], len);
+ optind++;
+
+ /* Output file must exist in non parse mode */
+ if (optind < argc) {
+ len = strlen(argv[optind]);
+ if (len > MAX_FILENAME)
+ usage_err("file name too long");
+ memcpy(out_file, argv[optind], len);
+ } else if (!parse)
+ usage_err("missing output file name");
+
+ /* open the input file */
+ in_fd = fopen(in_file, "rb");
+ if (in_fd == NULL) {
+ printf("Error: Failed to open input file %s\n", in_file);
+ goto main_exit;
+ }
+
+ /* Read the input file to buffer
+ * Always align the image to 16 byte boundary
+ */
+ file_size = get_file_size(in_file);
+ image_size = (file_size + AES_BLOCK_SZ - 1) & ~(AES_BLOCK_SZ - 1);
+ image_buf = calloc(image_size, 1);
+ if (image_buf == NULL) {
+ fprintf(stderr, "Error: failed allocating input buffer\n");
+ return 1;
+ }
+
+ read = fread(image_buf, file_size, 1, in_fd);
+ if (read != 1) {
+ fprintf(stderr, "Error: failed to read input file\n");
+ goto main_exit;
+ }
+
+ /* Parse the input image and leave */
+ if (parse) {
+ if (opts.key_index >= CSK_ARR_SZ) {
+ fprintf(stderr,
+ "Wrong key IDX value. Valid values 0 - %d\n",
+ CSK_ARR_SZ - 1);
+ goto main_exit;
+ }
+ ret = parse_image(image_buf, image_size);
+ goto main_exit;
+ }
+
+ /* Create a blob file from all extensions */
+ if (ext_cnt) {
+ ret = format_extensions(ext_file);
+ if (ret)
+ goto main_exit;
+ }
+
+ out_fd = fopen(out_file, "wb");
+ if (out_fd == NULL) {
+ fprintf(stderr,
+ "Error: Failed to open output file %s\n", out_file);
+ goto main_exit;
+ }
+
+ ret = write_prolog(ext_cnt, ext_file, image_buf, image_size, out_fd);
+ if (ret)
+ goto main_exit;
+
+#ifdef CONFIG_MVEBU_SECURE_BOOT
+ if (opts.sec_opts && (opts.sec_opts->encrypted_image != 0) &&
+ (opts.sec_opts->enc_image_sz != 0)) {
+ ret = write_boot_image(opts.sec_opts->encrypted_image,
+ opts.sec_opts->enc_image_sz, out_fd);
+ } else
+#endif
+ ret = write_boot_image(image_buf, image_size, out_fd);
+ if (ret)
+ goto main_exit;
+
+main_exit:
+ if (in_fd)
+ fclose(in_fd);
+
+ if (out_fd)
+ fclose(out_fd);
+
+ if (image_buf)
+ free(image_buf);
+
+ unlink(ext_file);
+
+#ifdef CONFIG_MVEBU_SECURE_BOOT
+ if (opts.sec_opts) {
+ if (opts.sec_opts->encrypted_image)
+ free(opts.sec_opts->encrypted_image);
+ free(opts.sec_opts);
+ }
+#endif
+ exit(ret);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-25 20:06:50 +0000