Create new configuration keywords:
RsaKeyModulusFile: pubkey modulus
RsaPssSigBlFile: bootloader rsa pss signature
RsaPssSigBctFile: bct rsa pss signature
Sample Configuration file update_bl_sig.cfg
RsaKeyModulusFile = pubkey.mod;
RsaPssSigBlFile = bl.sig;
where pubkey.mod and bl.sig are files that contain the public key
modulus and bootloader's rsa-pss signature respectively.
public key modulus and signature are created through utilities
outside cbootimage.
Command line example:
$ cbootimage -s tegra210 -u update_bl_sig.cfg image.bin image.bin-bl-signed
Above three new keywords added in this CL are only implemented support
for T210.
Signed-off-by: Jimmy Zhang <jimmzhang@xxxxxxxxxx>
---
src/cbootimage.h | 1 +
src/crypto.c | 20 ++++++++++++++++++
src/crypto.h | 5 +++++
src/parse.c | 35 +++++++++++++++++++++++++++++++
src/parse.h | 15 ++++++++++++++
src/set.c | 49 +++++++++++++++++++++++++++++++++++++++++++
src/set.h | 5 +++++
src/t210/nvbctlib_t210.c | 54 +++++++++++++++++++++++++++++++++++++++++++++++-
8 files changed, 183 insertions(+), 1 deletion(-)
diff --git a/src/cbootimage.h b/src/cbootimage.h
index 9706b2c1edb8..63f0ee97e12e 100644
--- a/src/cbootimage.h
+++ b/src/cbootimage.h
@@ -60,6 +60,7 @@ typedef enum
file_type_bl = 0,
file_type_bct,
file_type_mts,
+ file_type_bin,
} file_type;
/*
diff --git a/src/crypto.c b/src/crypto.c
index 99e9f085763c..f1710e521c77 100644
--- a/src/crypto.c
+++ b/src/crypto.c
@@ -297,3 +297,23 @@ sign_bct(build_image_context *context,
free(hash_buffer);
return e;
}
+
+void
+swap_endianness(
+ u_int8_t *out,
+ u_int8_t *in,
+ const u_int32_t size)
+{
+ u_int32_t i;
+
+ for (i = 0; i < size / 2; i++) {
+ u_int8_t b1 = in[i];
+ u_int8_t b2 = in[size - 1 - i];
+ out[i] = b2;
+ out[size - 1 - i] = b1;
+ }
+
+ /* In case odd number of bytes */
+ if (size % 2)
+ out[size / 2] = in[size / 2];
+}
diff --git a/src/crypto.h b/src/crypto.h
index d7151e0cd191..e9d578e8fa7e 100644
--- a/src/crypto.h
+++ b/src/crypto.h
@@ -44,4 +44,9 @@ sign_data_block(u_int8_t *source,
u_int32_t length,
u_int8_t *signature);
+void
+swap_endianness(
+ u_int8_t *out,
+ u_int8_t *in,
+ const u_int32_t size);
#endif /* #ifndef INCLUDED_CRYPTO_H */
diff --git a/src/parse.c b/src/parse.c
index 8c9824437393..d2f4016effd8 100644
--- a/src/parse.c
+++ b/src/parse.c
@@ -65,6 +65,8 @@ parse_bootloader(build_image_context *context, parse_token token, char *rest);
static int
parse_mts_image(build_image_context *context, parse_token token, char *rest);
static int
+parse_rsa_param(build_image_context *context, parse_token token, char *rest);
+static int
parse_value_u32(build_image_context *context, parse_token token, char *rest);
static int
parse_value_chipuid(build_image_context *context,
@@ -116,6 +118,9 @@ static parse_item s_top_level_items[] = {
{ "ChipUid=", token_unique_chip_id, parse_value_chipuid },
{ "JtagCtrl=", token_secure_jtag_control, parse_value_u32 },
{ "DebugCtrl=", token_secure_debug_control, parse_value_u32 },
+ { "RsaKeyModulusFile=", token_rsa_key_modulus, parse_rsa_param },
+ { "RsaPssSigBlFile=", token_rsa_pss_sig_bl, parse_rsa_param },
+ { "RsaPssSigBctFile=", token_rsa_pss_sig_bct, parse_rsa_param },
{ NULL, 0, NULL } /* Must be last */
};
@@ -480,6 +485,36 @@ static int parse_mts_image(build_image_context *context,
}
/*
+ * Parse the given rsa modulus/key/signature file name
+ * then call set_rsa_settings to set proper rsa field.
+ *
+ * @param context The main context pointer
+ * @param token The parse token value
+ * @param rest String to parse
+ * @return 0 and 1 for success and failure
+ */
+static int parse_rsa_param(build_image_context *context,
+ parse_token token,
+ char *rest)
+{
+ char filename[MAX_BUFFER];
+
+ assert(context != NULL);
+ assert(rest != NULL);
+
+ if (context->generate_bct != 0)
+ return 0;
+
+ /* Parse the file name. */
+ rest = parse_filename(rest, filename, MAX_BUFFER);
+ if (rest == NULL)
+ return 1;
+
+ /* Parsing has finished - set the bootloader */
+ return set_rsa_param(context, token, filename);
+}
+
+/*
* Parse the given string and find the array items in config file.
*
* @param context The main context pointer
diff --git a/src/parse.h b/src/parse.h
index ce3f21fb8a31..f6411648f883 100644
--- a/src/parse.h
+++ b/src/parse.h
@@ -114,6 +114,10 @@ typedef enum
token_secure_jtag_control,
token_secure_debug_control,
+ token_rsa_key_modulus,
+ token_rsa_pss_sig_bl,
+ token_rsa_pss_sig_bct,
+
token_nand_clock_divider,
token_nand_nand_timing,
token_nand_nand_timing2,
@@ -1109,6 +1113,17 @@ typedef struct cbootimage_soc_config_rec {
void *data,
u_int8_t *bct);
/*
+ * Get the size of specified bct field
+ *
+ * @param id The parse token
+ * @param data Return size from bct field
+ * @param bct Bct pointer
+ * @return 0 and -ENODATA for success and failure
+ */
+ int (*get_value_size)(parse_token id,
+ void *data,
+ u_int8_t *bct);
+ /*
* Set the bct crypto hash data.
*
* @param id The parse token value
diff --git a/src/set.c b/src/set.c
index 73af52111360..b6d33189b875 100644
--- a/src/set.c
+++ b/src/set.c
@@ -147,6 +147,55 @@ set_mts_image(build_image_context *context,
context->mts_entry_point = entry_point;
return update_mts_image(context);
}
+
+int
+set_rsa_param(build_image_context *context, parse_token token,
+ char *filename)
+{
+ int result;
+ u_int8_t *rsa_storage; /* Holds the rsa param after reading */
+ u_int32_t size; /* Bytes to read */
+ u_int32_t actual_size; /* In bytes */
+
+ if (g_soc_config->get_value_size == NULL) {
+ printf("Error: get_value_size() is not supported.\n");
+ exit(1);
+ }
+
+ if (g_soc_config->get_value_size(token, &size, context->bct)) {
+ printf("Error: Unsupported token %d for value size.\n", token);
+ exit(1);
+ }
+
+ /* Read the image into memory. */
+ result = read_from_image(filename,
+ 0,
+ size,
+ &rsa_storage,
+ &actual_size,
+ file_type_bin);
+
+ if (result) {
+ printf("Error reading file %s.\n", filename);
+ exit(1);
+ }
+
+ if (actual_size != size) {
+ printf("Error: invalid size, file %s.\n", filename);
+ exit(1);
+ }
+
+ if (enable_debug)
+ printf("Updating token %d with file %s\n", (int)token, filename);
+
+ /* set to appropriate bct field */
+ result = g_soc_config->set_value(token,
+ rsa_storage, context->bct);
+
+ free(rsa_storage);
+ return result;
+}
+
#define DEFAULT() \
default: \
printf("Unexpected token %d at line %d\n", \
diff --git a/src/set.h b/src/set.h
index 8b9a69b2a950..b38d4cefcb4f 100644
--- a/src/set.h
+++ b/src/set.h
@@ -42,6 +42,11 @@ set_mts_image(build_image_context *context,
u_int32_t entry_point);
int
+set_rsa_param(build_image_context *context,
+ parse_token token,
+ char *filename);
+
+int
context_set_value(build_image_context *context,
parse_token token,
void *value);
diff --git a/src/t210/nvbctlib_t210.c b/src/t210/nvbctlib_t210.c
index 9921bbbe0d2d..97985db9db7c 100644
--- a/src/t210/nvbctlib_t210.c
+++ b/src/t210/nvbctlib_t210.c
@@ -113,7 +113,10 @@ parse_token t210_root_token_list[] = {
token_crypto_length,
token_max_bct_search_blks,
token_unique_chip_id,
- token_secure_debug_control
+ token_secure_debug_control,
+ token_rsa_key_modulus,
+ token_rsa_pss_sig_bl,
+ token_rsa_pss_sig_bct
};
int
@@ -2174,6 +2177,36 @@ t210_bct_get_value(parse_token id, void *data, u_int8_t *bct)
}
int
+t210_bct_get_value_size(parse_token id, void *data, u_int8_t *bct)
+{
+ nvboot_config_table *bct_ptr = (nvboot_config_table *)bct;
+
+ if (data == NULL)
+ return -ENODATA;
+
+ switch (id) {
+ case token_rsa_key_modulus:
+ *(u_int32_t *)data = sizeof(nvboot_rsa_key_modulus);
+ break;
+
+ case token_rsa_pss_sig_bl:
+ *(u_int32_t *)data = sizeof(nvboot_rsa_pss_sig);
+ break;
+
+ case token_rsa_pss_sig_bct:
+ *(u_int32_t *)data = sizeof(nvboot_rsa_pss_sig);
+ break;
+
+ /*
+ * Other bct fields can be added in when needed
+ */
+ default:
+ return -ENODATA;
+ }
+ return 0;
+}
+
+int
t210_bct_set_value(parse_token id, void *data, u_int8_t *bct)
{
nvboot_config_table *bct_ptr = (nvboot_config_table *)bct;
@@ -2198,6 +2231,24 @@ t210_bct_set_value(parse_token id, void *data, u_int8_t *bct)
memcpy(&bct_ptr->unique_chip_id, data, sizeof(nvboot_ecid));
break;
+ case token_rsa_key_modulus:
+ swap_endianness(&bct_ptr->key, data, sizeof(nvboot_rsa_key_modulus));
+ break;
+
+ case token_rsa_pss_sig_bl:
+ /*
+ * Update bootloader 0 since there is only one copy
+ * of bootloader being built in.
+ */
+ swap_endianness(&bct_ptr->bootloader[0].signature.rsa_pss_sig,
+ data, sizeof(nvboot_rsa_pss_sig));
+ break;
+
+ case token_rsa_pss_sig_bct:
+ swap_endianness(&bct_ptr->signature.rsa_pss_sig,
+ data, sizeof(nvboot_rsa_pss_sig));
+ break;
+
default:
return -ENODATA;
}
@@ -2279,6 +2330,7 @@ cbootimage_soc_config tegra210_config = {
.getbl_param = t210_getbl_param,
.set_value = t210_bct_set_value,
.get_value = t210_bct_get_value,
+ .get_value_size = t210_bct_get_value_size,
.set_data = t210_bct_set_data,
.get_bct_size = t210_get_bct_size,
.token_supported = t210_bct_token_supported,
--
1.8.1.5
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