diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/804-crypto-0021-MLK-19801-1-crypto-caam-add-tag-functionality.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/804-crypto-0021-MLK-19801-1-crypto-caam-add-tag-functionality.patch | 439 |
1 files changed, 439 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/804-crypto-0021-MLK-19801-1-crypto-caam-add-tag-functionality.patch b/target/linux/layerscape/patches-5.4/804-crypto-0021-MLK-19801-1-crypto-caam-add-tag-functionality.patch new file mode 100644 index 0000000000..cb2477c2e5 --- /dev/null +++ b/target/linux/layerscape/patches-5.4/804-crypto-0021-MLK-19801-1-crypto-caam-add-tag-functionality.patch @@ -0,0 +1,439 @@ +From b2fb5441c4613465e0c8f9203cdec4f8083d2fdd Mon Sep 17 00:00:00 2001 +From: Franck LENORMAND <franck.lenormand@nxp.com> +Date: Fri, 5 Oct 2018 16:08:25 +0200 +Subject: [PATCH] MLK-19801-1 crypto: caam - add tag functionality +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Add functions to tag an object with metadata(configuration). + +It is possible to: + - create metadata: + - init_tag_object_header + - init_blackey_conf + - set_tag_object_conf + - retrieve metadata: + - get_tag_object_conf + - get_blackey_conf + +The API expects an object to be a space a memory +with an address and a size. + +The implementation of the tag is currently exposed +but users shouldn't access it directly, they should +use the functions provided. + +Signed-off-by: Franck LENORMAND <franck.lenormand@nxp.com> +(cherry picked from commit ebbb132da8e7f9de7f3d375eff8d87f684feb1eb) +Signed-off-by: Vipul Kumar <vipul_kumar@mentor.com> +(cherry picked from commit 8b6f6b4474be33ee271dfe2cce79f9f6335733aa) + +-make tag functionality depend on JR +-change commit headline prefix + +Signed-off-by: Horia Geantă <horia.geanta@nxp.com> +--- + drivers/crypto/caam/Kconfig | 10 ++ + drivers/crypto/caam/Makefile | 1 + + drivers/crypto/caam/tag_object.c | 260 +++++++++++++++++++++++++++++++++++++++ + drivers/crypto/caam/tag_object.h | 100 +++++++++++++++ + 4 files changed, 371 insertions(+) + create mode 100644 drivers/crypto/caam/tag_object.c + create mode 100644 drivers/crypto/caam/tag_object.h + +--- a/drivers/crypto/caam/Kconfig ++++ b/drivers/crypto/caam/Kconfig +@@ -147,6 +147,16 @@ config CRYPTO_DEV_FSL_CAAM_RNG_API + Selecting this will register the SEC4 hardware rng to + the hw_random API for suppying the kernel entropy pool. + ++config CRYPTO_DEV_FSL_CAAM_TK_API ++ bool "Register tagged key cryptography implementations with Crypto API" ++ depends on CRYPTO_DEV_FSL_CAAM_CRYPTO_API ++ help ++ Selecting this will register algorithms supporting tagged ++ key. ++ ++ Tagged key are keys that contains metadata indicating what ++ they are and how to handle them. ++ + config CRYPTO_DEV_FSL_CAAM_RNG_TEST + bool "Test caam rng" + depends on CRYPTO_DEV_FSL_CAAM_RNG_API +--- a/drivers/crypto/caam/Makefile ++++ b/drivers/crypto/caam/Makefile +@@ -24,6 +24,7 @@ caam_jr-$(CONFIG_CRYPTO_DEV_FSL_CAAM_PKC + caam_jr-$(CONFIG_CRYPTO_DEV_FSL_CAAM_SM) += sm_store.o + caam_jr-$(CONFIG_CRYPTO_DEV_FSL_CAAM_SM_TEST) += sm_test.o + caam_jr-$(CONFIG_CRYPTO_DEV_FSL_CAAM_SECVIO) += secvio.o ++caam-jr-$(CONFIG_CRYPTO_DEV_FSL_CAAM_TK_API) += tag_object.o + + caam-$(CONFIG_CRYPTO_DEV_FSL_CAAM_CRYPTO_API_QI) += qi.o + ifneq ($(CONFIG_CRYPTO_DEV_FSL_CAAM_CRYPTO_API_QI),) +--- /dev/null ++++ b/drivers/crypto/caam/tag_object.c +@@ -0,0 +1,260 @@ ++// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause ++/* ++ * Copyright 2018-2019 NXP ++ */ ++ ++#include <linux/export.h> ++#include <linux/string.h> ++#include <linux/errno.h> ++ ++#include "tag_object.h" ++#include "desc.h" ++ ++/* ++ * Magic number to clearly identify the structure is for us ++ * 0x54 = 'T' ++ * 0x61 = 'a' ++ * 0x67 = 'g' ++ * 0x4f = 'O' ++ */ ++#define TAG_OBJECT_MAGIC 0x5461674f ++ ++/** ++ * struct tagged_object - Structure representing a tagged object ++ * @tag : The configuration of the data ++ * @object : The object ++ */ ++struct tagged_object { ++ struct tag_object_conf tag; ++ char object; ++}; ++ ++/** ++ * is_bk_type() - Determines if black key type. ++ * @type: The type ++ * ++ * Return: True if black key type, False otherwise. ++ */ ++static bool is_bk_type(enum tag_type type) ++{ ++ return (type == TAG_TYPE_BLACK_KEY_ECB) || ++ (type == TAG_TYPE_BLACK_KEY_ECB_TRUSTED) || ++ (type == TAG_TYPE_BLACK_KEY_CCM) || ++ (type == TAG_TYPE_BLACK_KEY_CCM_TRUSTED); ++} ++ ++/** ++ * is_bk_conf() - Determines if black key conf. ++ * @tag_obj_conf : The tag object conf ++ * ++ * Return: True if black key conf, False otherwise. ++ */ ++bool is_bk_conf(const struct tag_object_conf *tag_obj_conf) ++{ ++ return is_bk_type(tag_obj_conf->header.type); ++} ++EXPORT_SYMBOL(is_bk_conf); ++ ++/** ++ * get_bk_conf() - Gets the block conf. ++ * @tag_obj_conf : The tag object conf ++ * ++ * Return: The block conf. ++ */ ++const struct blackey_conf *get_bk_conf(const struct tag_object_conf *tag_obj_conf) ++{ ++ return &tag_obj_conf->conf.bk_conf; ++} ++ ++/** ++ * get_tag_object_overhead() - Gets the tag object overhead. ++ * ++ * Return: The tag object overhead. ++ */ ++size_t get_tag_object_overhead(void) ++{ ++ return TAG_OVERHEAD; ++} ++EXPORT_SYMBOL(get_tag_object_overhead); ++ ++/** ++ * is_valid_type() - Determines if valid type. ++ * @type : The type ++ * ++ * Return: True if valid type, False otherwise. ++ */ ++bool is_valid_type(enum tag_type type) ++{ ++ return (type > TAG_TYPE_NOT_SUPPORTED) && (type < NB_TAG_TYPE); ++} ++EXPORT_SYMBOL(is_valid_type); ++ ++/** ++ * is_valid_header() - Determines if valid header. ++ * @header : The header ++ * ++ * Return: True if valid tag object conf, False otherwise. ++ */ ++static bool is_valid_header(const struct conf_header *header) ++{ ++ bool valid = header->_magic_number == TAG_OBJECT_MAGIC; ++ ++ valid = valid && is_valid_type(header->type); ++ ++ return valid; ++} ++ ++/** ++ * is_valid_tag_object_conf() - Determines if valid tag object conf. ++ * @tag_obj_conf : The tag object conf ++ * ++ * Return: True if valid header, False otherwise. ++ */ ++bool is_valid_tag_object_conf(const struct tag_object_conf *tag_obj_conf) ++{ ++ bool valid = true; ++ ++ valid = is_valid_header(&tag_obj_conf->header); ++ ++ return valid; ++} ++EXPORT_SYMBOL(is_valid_tag_object_conf); ++ ++/** ++ * get_tag_object_conf() - Gets a pointer on the tag object conf. ++ * @tag_obj_conf : The tag object conf ++ * @buffer : The buffer ++ * @size : The size ++ * ++ * Return: 0 if success, else error code ++ */ ++int get_tag_object_conf(void *buffer, size_t size, ++ struct tag_object_conf **tag_obj_conf) ++{ ++ bool is_valid; ++ struct tagged_object *tago = (struct tagged_object *)buffer; ++ size_t conf_size = get_tag_object_overhead(); ++ ++ /* Check we can retrieve the conf */ ++ if (size < conf_size) ++ return -EINVAL; ++ ++ is_valid = is_valid_tag_object_conf(&tago->tag); ++ ++ *tag_obj_conf = &tago->tag; ++ ++ return (is_valid) ? 0 : -EINVAL; ++} ++EXPORT_SYMBOL(get_tag_object_conf); ++ ++/** ++ * init_tag_object_header() - Initialize the tag object header ++ * @conf_header : The configuration header ++ * @type : The type ++ * ++ * It initialize the header structure ++ */ ++void init_tag_object_header(struct conf_header *conf_header, ++ enum tag_type type) ++{ ++ conf_header->_magic_number = TAG_OBJECT_MAGIC; ++ conf_header->type = type; ++} ++EXPORT_SYMBOL(init_tag_object_header); ++ ++/** ++ * set_tag_object_conf() - Sets the tag object conf. ++ * @tag_obj_conf : The tag object conf ++ * @buffer : The buffer ++ * @obj_size : The object size ++ * @to_size : The tagged object size ++ * ++ * Return: 0 if success, else error code ++ */ ++int set_tag_object_conf(const struct tag_object_conf *tag_obj_conf, ++ void *buffer, size_t obj_size, u32 *to_size) ++{ ++ struct tagged_object *tago = buffer; ++ size_t conf_size = get_tag_object_overhead(); ++ size_t req_size = obj_size + conf_size; ++ ++ /* Check we can set the conf */ ++ if (*to_size < req_size) { ++ *to_size = req_size; ++ return -EINVAL; ++ } ++ ++ /* Move the object */ ++ memmove(&tago->object, buffer, obj_size); ++ ++ /* Copy the tag */ ++ memcpy(&tago->tag, tag_obj_conf, conf_size); ++ ++ *to_size = req_size; ++ ++ return 0; ++} ++EXPORT_SYMBOL(set_tag_object_conf); ++ ++/** ++ * init_blackey_conf() - Initialize the black key configuration ++ * @blackey_conf : The blackey conf ++ * @len : The length ++ * @ccm : The ccm ++ * @tk : The trusted key ++ * ++ * It initialize the black key configuration structure ++ */ ++void init_blackey_conf(struct blackey_conf *blackey_conf, ++ size_t len, bool ccm, bool tk) ++{ ++ blackey_conf->real_len = len; ++ blackey_conf->load = KEY_ENC ++ | ((ccm) ? KEY_EKT : 0) ++ | ((tk) ? KEY_TK : 0); ++} ++EXPORT_SYMBOL(init_blackey_conf); ++ ++/** ++ * get_blackey_conf() - Get the black key configuration ++ * @blackey_conf : The blackey conf ++ * @real_len : The real length ++ * @load_param : The load parameter ++ * ++ * It retrieve the black key configuration ++ */ ++void get_blackey_conf(const struct blackey_conf *blackey_conf, ++ u32 *real_len, u32 *load_param) ++{ ++ *real_len = blackey_conf->real_len; ++ *load_param = blackey_conf->load; ++} ++EXPORT_SYMBOL(get_blackey_conf); ++ ++/** ++ * get_tagged_data() - Get a pointer on the data and the size ++ * @tagged_object : Pointer on the tagged object ++ * @tagged_object_size : tagged object size in bytes ++ * @data : Pointer on the data ++ * @data_size : data size in bytes ++ * ++ * Return: 0 if success, else error code ++ */ ++int get_tagged_data(void *tagged_object, size_t tagged_object_size, ++ void **data, u32 *data_size) ++{ ++ struct tagged_object *tago = ++ (struct tagged_object *)tagged_object; ++ size_t conf_size = get_tag_object_overhead(); ++ ++ /* Check we can retrieve the object */ ++ if (tagged_object_size < conf_size) ++ return -EINVAL; ++ ++ /* Retrieve the object */ ++ *data = &tago->object; ++ *data_size = tagged_object_size - conf_size; ++ ++ return 0; ++} ++EXPORT_SYMBOL(get_tagged_data); +--- /dev/null ++++ b/drivers/crypto/caam/tag_object.h +@@ -0,0 +1,100 @@ ++/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ ++/* ++ * Copyright 2018-2019 NXP ++ */ ++ ++#ifndef _TAG_OBJECT_H_ ++#define _TAG_OBJECT_H_ ++ ++#include <linux/types.h> ++ ++#define TAG_MIN_SIZE (2 * sizeof(struct conf_header)) ++#define TAG_OVERHEAD sizeof(struct tag_object_conf) ++ ++/** ++ * enum tag_type - Type of data represented by the tag ++ */ ++enum tag_type { ++ /** @TAG_TYPE_NOT_SUPPORTED: The type is not supported */ ++ TAG_TYPE_NOT_SUPPORTED = 0, ++ ++ /* Type that passes is_tag_type_valid() */ ++ /** @TAG_TYPE_BLACK_KEY_ECB: Black key encrypted with ECB */ ++ TAG_TYPE_BLACK_KEY_ECB, ++ /** ++ * @TAG_TYPE_BLACK_KEY_ECB_TRUSTED: ECB Black key created by trusted ++ * descriptor ++ */ ++ TAG_TYPE_BLACK_KEY_ECB_TRUSTED, ++ /** @TAG_TYPE_BLACK_KEY_CCM: Black key encrypted with CCM */ ++ TAG_TYPE_BLACK_KEY_CCM, ++ /** ++ * @TAG_TYPE_BLACK_KEY_CCM_TRUSTED: CCM Black key created by trusted ++ * descriptor ++ */ ++ TAG_TYPE_BLACK_KEY_CCM_TRUSTED, ++ ++ /** @NB_TAG_TYPE: Number of type of tag */ ++ NB_TAG_TYPE, ++}; ++ ++/** ++ * struct conf_header - Common struture holding the type of data and the magic ++ * number ++ * @_magic_number : A magic number to identify the structure ++ * @type : The type of data contained ++ */ ++struct conf_header { ++ u32 _magic_number; ++ u32 type; ++}; ++ ++/** ++ * struct blackey_conf - Configuration for a black key ++ * @load : Load parameter for CAAM ++ * @real_len : Length of the key before encryption ++ */ ++struct blackey_conf { ++ u32 load; ++ u32 real_len; ++}; ++ ++/** ++ * struct tag_object_conf - Common structure which is the tag applied to data ++ * @header : Part of the data initialized with common function ++ * :c:func:`init_tag_object_header` ++ * @conf : Configuration data about the object tagged, initialized with ++ * specific function ++ */ ++struct tag_object_conf { ++ struct conf_header header; ++ union { ++ struct blackey_conf bk_conf; ++ } conf; ++}; ++ ++bool is_bk_conf(const struct tag_object_conf *tag_obj_conf); ++ ++bool is_valid_tag_object_conf(const struct tag_object_conf *tag_obj_conf); ++ ++void init_tag_object_header(struct conf_header *conf_header, ++ enum tag_type type); ++ ++int get_tag_object_conf(void *buffer, size_t buffer_size, ++ struct tag_object_conf **tag_obj_conf); ++ ++int set_tag_object_conf(const struct tag_object_conf *tag_obj_conf, ++ void *buffer, size_t obj_size, u32 *to_size); ++ ++size_t get_tag_object_overhead(void); ++ ++void get_blackey_conf(const struct blackey_conf *blackey_conf, ++ u32 *real_len, u32 *load_param); ++ ++void init_blackey_conf(struct blackey_conf *blackey_conf, ++ size_t len, bool ccm, bool tk); ++ ++int get_tagged_data(void *buffer, size_t buffer_size, ++ void **data, u32 *data_size); ++ ++#endif /* _TAG_OBJECT_H_ */ |