Exynos has FMP(Flash Memory Protector) H/W to protect data stored
on storage device.
FMP interworks with the storage controller to encrypt a data before writing
to the storage device and decrypt the data after reading from storage
device.
FMP driver is registered with a cipher algorithm of diskcipher.
FMP driver writes crypto information in the descriptor of the storage
controller.
And then, FMP H/W encrypts plan-text with every write I/O
and decrypts cipher-text with every read I/O.
FMP is divided into three blocks.
The first is fmp driver to control FMP H/W.
The second is the fmp-crypt that is responsible for the interface with
the diskcipher and storage driver.
The third is the fmp-test to test the fmp driver through testmgr of
crypto API.
Cc: Herbert Xu <herb...@gondor.apana.org.au>
Cc: "David S. Miller" <da...@davemloft.net>
Signed-off-by: Boojin Kim <boojin....@samsung.com>
---
drivers/crypto/Kconfig | 2 +
drivers/crypto/Makefile | 1 +
drivers/crypto/fmp/Kconfig | 13 +
drivers/crypto/fmp/Makefile | 1 +
drivers/crypto/fmp/fmp.c | 595
+++++++++++++++++++++++++++++++++++++++++
drivers/crypto/fmp/fmp_crypt.c | 243 +++++++++++++++++
drivers/crypto/fmp/fmp_test.c | 310 +++++++++++++++++++++
drivers/crypto/fmp/fmp_test.h | 30 +++
include/crypto/fmp.h | 324 ++++++++++++++++++++++
9 files changed, 1519 insertions(+)
create mode 100644 drivers/crypto/fmp/Kconfig
create mode 100644 drivers/crypto/fmp/Makefile
create mode 100644 drivers/crypto/fmp/fmp.c
create mode 100644 drivers/crypto/fmp/fmp_crypt.c
create mode 100644 drivers/crypto/fmp/fmp_test.c
create mode 100644 drivers/crypto/fmp/fmp_test.h
create mode 100644 include/crypto/fmp.h
diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig
index b8c5087..43b8cc4 100644
--- a/drivers/crypto/Kconfig
+++ b/drivers/crypto/Kconfig
@@ -785,4 +785,6 @@ config CRYPTO_DEV_CCREE
source "drivers/crypto/hisilicon/Kconfig"
+source "drivers/crypto/fmp/Kconfig"
+
endif # CRYPTO_HW
diff --git a/drivers/crypto/Makefile b/drivers/crypto/Makefile
index afc4753..d43cf7a 100644
--- a/drivers/crypto/Makefile
+++ b/drivers/crypto/Makefile
@@ -48,3 +48,4 @@ obj-$(CONFIG_CRYPTO_DEV_BCM_SPU) += bcm/
obj-$(CONFIG_CRYPTO_DEV_SAFEXCEL) += inside-secure/
obj-$(CONFIG_CRYPTO_DEV_ARTPEC6) += axis/
obj-y += hisilicon/
+obj-$(CONFIG_EXYNOS_FMP) += fmp/
diff --git a/drivers/crypto/fmp/Kconfig b/drivers/crypto/fmp/Kconfig
new file mode 100644
index 0000000..69cdb53
--- /dev/null
+++ b/drivers/crypto/fmp/Kconfig
@@ -0,0 +1,13 @@
+#
+# SMU/FMP controller drivers
+#
+
+config EXYNOS_FMP
+ tristate "Samsung EXYNOS FMP driver"
+ depends on CRYPTO_DISKCIPHER && MMC_DW_EXYNOS_FMP
+ help
+ Say yes here to build support for FMP (Flash Memory Protector)
+ to encrypt and decrypt userdata using inline H/W crypto module.
+ If unsure, say N.
+
+ To compile this driver as a module, choose M here
diff --git a/drivers/crypto/fmp/Makefile b/drivers/crypto/fmp/Makefile
new file mode 100644
index 0000000..5328947
--- /dev/null
+++ b/drivers/crypto/fmp/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_EXYNOS_FMP) += fmp_crypt.o fmp.o fmp_test.o
diff --git a/drivers/crypto/fmp/fmp.c b/drivers/crypto/fmp/fmp.c
new file mode 100644
index 0000000..475d471
--- /dev/null
+++ b/drivers/crypto/fmp/fmp.c
@@ -0,0 +1,595 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Exynos FMP driver
+ *
+ * Copyright (C) 2015 Samsung Electronics Co., Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/fs.h>
+#include <linux/slab.h>
+#include <linux/smc.h>
+#include <asm/cacheflush.h>
+#include <linux/crypto.h>
+#include <linux/scatterlist.h>
+#include <crypto/fmp.h>
+
+#include "fmp_test.h"
+
+#define WORD_SIZE 4
+#define FMP_IV_MAX_IDX (FMP_IV_SIZE_16 / WORD_SIZE)
+
+#ifndef __SMC_H__
+#define exynos_smc(a, b, c, d) (-EINVAL)
+#endif
+
+#define byte2word(b0, b1, b2, b3) \
+ (((unsigned int)(b0) << 24) | \
+ ((unsigned int)(b1) << 16) | \
+ ((unsigned int)(b2) << 8) | (b3))
+#define get_word(x, c) byte2word(((unsigned char *)(x) + 4 * (c))[0], \
+ ((unsigned char *)(x) + 4 * (c))[1], \
+ ((unsigned char *)(x) + 4 * (c))[2], \
+ ((unsigned char *)(x) + 4 * (c))[3])
+
+static inline void dump_ci(struct fmp_crypto_info *c)
+{
+ if (c) {
+ pr_info
+ ("%s: crypto:%p algo:%d enc:%d key_size:%d key:%p\n",
+ __func__, c, c->algo_mode, c->enc_mode,
+ c->key_size, c->key);
+ if (c->enc_mode == EXYNOS_FMP_FILE_ENC)
+ print_hex_dump(KERN_CONT, "key:",
+ DUMP_PREFIX_OFFSET, 16, 1, c->key,
+ sizeof(c->key), false);
+ }
+}
+
+static inline void dump_table(struct fmp_table_setting *table)
+{
+ print_hex_dump(KERN_CONT, "dump:", DUMP_PREFIX_OFFSET, 16, 1,
+ table, sizeof(struct fmp_table_setting), false);
+}
+
+static inline int is_set_fmp_disk_key(struct exynos_fmp *fmp)
+{
+ return (fmp->status_disk_key == KEY_SET) ? TRUE : FALSE;
+}
+
+static inline int is_stored_fmp_disk_key(struct exynos_fmp *fmp)
+{
+ return (fmp->status_disk_key == KEY_STORED) ? TRUE : FALSE;
+}
+
+static inline int is_supported_ivsize(u32 ivlen)
+{
+ if (ivlen && (ivlen <= FMP_IV_SIZE_16))
+ return TRUE;
+ else
+ return FALSE;
+}
+
+static inline int check_aes_xts_size(struct fmp_table_setting *table,
+ bool cmdq_enabled)
+{
+ int size;
+
+ if (cmdq_enabled)
+ size = GET_CMDQ_LENGTH(table);
+ else
+ size = GET_LENGTH(table);
+ return (size > MAX_AES_XTS_TRANSFER_SIZE) ? size : 0;
+}
+
+static inline int check_aes_xts_key(char *key,
+ enum fmp_crypto_key_size key_size)
+{
+ char *enckey, *twkey;
+
+ enckey = key;
+ twkey = key + key_size;
+ return (memcmp(enckey, twkey, key_size)) ? 0 : -1;
+}
+
+int fmplib_set_algo_mode(struct fmp_table_setting *table,
+ struct fmp_crypto_info *crypto, bool cmdq_enabled)
+{
+ int ret;
+ enum fmp_crypto_algo_mode algo_mode = crypto->algo_mode;
+
+ if (algo_mode == EXYNOS_FMP_ALGO_MODE_AES_XTS) {
+ ret = check_aes_xts_size(table, cmdq_enabled);
+ if (ret) {
+ pr_err("%s: Fail FMP XTS due to invalid size(%d)\n",
+ __func__, ret);
+ return -EINVAL;
+ }
+ }
+
+ switch (crypto->enc_mode) {
+ case EXYNOS_FMP_FILE_ENC:
+ if (cmdq_enabled)
+ SET_CMDQ_FAS(table, algo_mode);
+ else
+ SET_FAS(table, algo_mode);
+ break;
+ case EXYNOS_FMP_DISK_ENC:
+ if (cmdq_enabled)
+ SET_CMDQ_DAS(table, algo_mode);
+ else
+ SET_DAS(table, algo_mode);
+ break;
+ default:
+ pr_err("%s: Invalid fmp enc mode %d\n", __func__,
+ crypto->enc_mode);
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int fmplib_set_file_key(struct fmp_table_setting *table,
+ struct fmp_crypto_info *crypto)
+{
+ enum fmp_crypto_algo_mode algo_mode = crypto->algo_mode;
+ enum fmp_crypto_key_size key_size = crypto->fmp_key_size;
+ char *key = crypto->key;
+ int idx, max;
+
+ if (!key || (crypto->enc_mode != EXYNOS_FMP_FILE_ENC) ||
+ ((key_size != EXYNOS_FMP_KEY_SIZE_16) &&
+ (key_size != EXYNOS_FMP_KEY_SIZE_32))) {
+ pr_err("%s: Invalid crypto:%p key:%p key_size:%d
enc_mode:%d\n",
+ __func__, crypto, key, key_size, crypto->enc_mode);
+ return -EINVAL;
+ }
+
+ if ((algo_mode == EXYNOS_FMP_ALGO_MODE_AES_XTS)
+ && check_aes_xts_key(key, key_size)) {
+ pr_err("%s: Fail FMP XTS due to the same enc and twkey\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ if (algo_mode == EXYNOS_FMP_ALGO_MODE_AES_CBC) {
+ max = key_size / WORD_SIZE;
+ for (idx = 0; idx < max; idx++)
+ *(&table->file_enckey0 + idx) =
+ get_word(key, max - (idx + 1));
+ } else if (algo_mode == EXYNOS_FMP_ALGO_MODE_AES_XTS) {
+ key_size *= 2;
+ max = key_size / WORD_SIZE;
+ for (idx = 0; idx < (max / 2); idx++)
+ *(&table->file_enckey0 + idx) =
+ get_word(key, (max / 2) - (idx + 1));
+ for (idx = 0; idx < (max / 2); idx++)
+ *(&table->file_twkey0 + idx) =
+ get_word(key, max - (idx + 1));
+ }
+ return 0;
+}
+
+static int fmplib_set_key_size(struct fmp_table_setting *table,
+ struct fmp_crypto_info *crypto, bool cmdq_enabled)
+{
+ enum fmp_crypto_key_size key_size;
+
+ key_size = crypto->fmp_key_size;
+
+ if ((key_size != EXYNOS_FMP_KEY_SIZE_16) &&
+ (key_size != EXYNOS_FMP_KEY_SIZE_32)) {
+ pr_err("%s: Invalid keysize %d\n", __func__, key_size);
+ return -EINVAL;
+ }
+
+ switch (crypto->enc_mode) {
+ case EXYNOS_FMP_FILE_ENC:
+ if (cmdq_enabled)
+ SET_CMDQ_KEYLEN(table,
+ (key_size ==
+ FMP_KEY_SIZE_32) ? FKL_CMDQ : 0);
+ else
+ SET_KEYLEN(table,
+ (key_size == FMP_KEY_SIZE_32) ? FKL : 0);
+ break;
+ case EXYNOS_FMP_DISK_ENC:
+ if (cmdq_enabled)
+ SET_CMDQ_KEYLEN(table,
+ (key_size ==
+ FMP_KEY_SIZE_32) ? DKL_CMDQ : 0);
+ else
+ SET_KEYLEN(table,
+ (key_size == FMP_KEY_SIZE_32) ? DKL : 0);
+ break;
+ default:
+ pr_err("%s: Invalid fmp enc mode %d\n", __func__,
+ crypto->enc_mode);
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int fmplib_set_disk_key(struct exynos_fmp *fmp, u8 *key, u32
key_size)
+{
+ int ret;
+
+ /* TODO: only set for host0 */
+ __flush_dcache_area(key, (size_t) FMP_MAX_KEY_SIZE);
+ ret =
+ exynos_smc(SMC_CMD_FMP_DISK_KEY_STORED, 0, virt_to_phys(key),
+ key_size);
+ if (ret) {
+ pr_err("%s: Fail to set FMP disk key. ret = %d\n", __func__,
+ ret);
+ fmp->status_disk_key = KEY_ERROR;
+ return -EINVAL;
+ }
+ fmp->status_disk_key = KEY_STORED;
+ return 0;
+}
+
+static int fmplib_clear_disk_key(struct exynos_fmp *fmp)
+{
+ int ret;
+
+ ret = exynos_smc(SMC_CMD_FMP_DISK_KEY_CLEAR, 0, 0, 0);
+ if (ret) {
+ pr_err("%s: Fail to clear FMP disk key. ret = %d\n",
+ __func__, ret);
+ fmp->status_disk_key = KEY_ERROR;
+ return -EPERM;
+ }
+
+ fmp->status_disk_key = KEY_CLEAR;
+ return 0;
+}
+
+static int fmplib_set_iv(struct fmp_table_setting *table,
+ struct fmp_crypto_info *crypto, u8 *iv)
+{
+ int idx;
+
+ switch (crypto->enc_mode) {
+ case EXYNOS_FMP_FILE_ENC:
+ for (idx = 0; idx < FMP_IV_MAX_IDX; idx++)
+ *(&table->file_iv0 + idx) =
+ get_word(iv, FMP_IV_MAX_IDX - (idx + 1));
+ break;
+ case EXYNOS_FMP_DISK_ENC:
+ for (idx = 0; idx < FMP_IV_MAX_IDX; idx++)
+ *(&table->disk_iv0 + idx) =
+ get_word(iv, FMP_IV_MAX_IDX - (idx + 1));
+ break;
+ default:
+ pr_err("%s: Invalid fmp enc mode %d\n", __func__,
+ crypto->enc_mode);
+ return -EINVAL;
+ }
+ return 0;
+}
+
+int exynos_fmp_crypt(struct fmp_crypto_info *ci, void *priv)
+{
+ struct exynos_fmp *fmp = ci->ctx;
+ struct fmp_request *r = priv;
+ int ret = 0;
+ u8 iv[FMP_IV_SIZE_16];
+
+ if (!r || !fmp) {
+ pr_err("%s: invalid req:%p, fmp:%p\n", __func__, r, fmp);
+ return -EINVAL;
+ }
+
+ /* check test mode */
+ if (ci->algo_mode & EXYNOS_FMP_ALGO_MODE_TEST) {
+ ci->algo_mode &= EXYNOS_FMP_ALGO_MODE_MASK;
+ if (!ci->algo_mode)
+ return 0;
+
+ if (!fmp->test_data) {
+ pr_err("%s: no test_data for test mode\n",
__func__);
+ goto out;
+ }
+ /* use test manager's iv instead of host driver's iv */
+ r->iv = fmp->test_data->iv;
+ r->ivsize = sizeof(fmp->test_data->iv);
+ }
+
+ /* check crypto info & input param */
+ if (!ci->algo_mode || !is_supported_ivsize(r->ivsize) ||
+ !r->table || !r->iv) {
+ dev_err(fmp->dev,
+ "%s: invalid mode:%d iv:%p ivsize:%d table:%p\n",
+ __func__, ci->algo_mode, r->iv, r->ivsize,
r->table);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /* set algo & enc mode into table */
+ ret = fmplib_set_algo_mode(r->table, ci, r->cmdq_enabled);
+ if (ret) {
+ dev_err(fmp->dev, "%s: Fail to set FMP encryption mode\n",
+ __func__);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /* set key size into table */
+ switch (ci->enc_mode) {
+ case EXYNOS_FMP_FILE_ENC:
+ ret = fmplib_set_file_key(r->table, ci);
+ if (ret) {
+ dev_err(fmp->dev, "%s: Fail to set FMP key\n",
+ __func__);
+ ret = -EINVAL;
+ goto out;
+ }
+ break;
+ case EXYNOS_FMP_DISK_ENC:
+ if (is_stored_fmp_disk_key(fmp)) {
+ ret = exynos_smc(SMC_CMD_FMP_DISK_KEY_SET, 0, 0, 0);
+ if (ret) {
+ dev_err(fmp->dev,
+ "%s: Fail to set disk key\n",
__func__);
+ goto out;
+ }
+ fmp->status_disk_key = KEY_SET;
+ } else if (!is_set_fmp_disk_key(fmp)) {
+ dev_err(fmp->dev,
+ "%s: Fail because disk key is clear\n",
+ __func__);
+ ret = -EINVAL;
+ goto out;
+ }
+ break;
+ default:
+ dev_err(fmp->dev, "%s: Invalid fmp enc mode %d\n", __func__,
+ ci->enc_mode);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /* set key size into table */
+ ret = fmplib_set_key_size(r->table, ci, r->cmdq_enabled);
+ if (ret) {
+ dev_err(fmp->dev, "%s: Fail to set FMP key size\n",
__func__);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /* set iv */
+ memset(iv, 0, FMP_IV_SIZE_16);
+ memcpy(iv, r->iv, r->ivsize);
+ ret = fmplib_set_iv(r->table, ci, iv);
+ if (ret) {
+ dev_err(fmp->dev, "%s: Fail to set FMP IV\n", __func__);
+ ret = -EINVAL;
+ goto out;
+ }
+out:
+ if (ret) {
+ dump_ci(ci);
+ if (r && r->table)
+ dump_table(r->table);
+ }
+ return ret;
+}
+
+static inline void fmplib_clear_file_key(struct fmp_table_setting *table)
+{
+ memset(&table->file_iv0, 0, sizeof(__le32) * 24);
+}
+
+int exynos_fmp_clear(struct fmp_crypto_info *ci, void *priv)
+{
+ struct fmp_request *r = priv;
+
+ if (!r) {
+ pr_err("%s: Invalid input\n", __func__);
+ return -EINVAL;
+ }
+
+ if (!r->table) {
+ pr_err("%s: Invalid input table\n", __func__);
+ return -EINVAL;
+ }
+
+ fmplib_clear_file_key(r->table);
+ return 0;
+}
+
+int exynos_fmp_setkey(struct fmp_crypto_info *ci, u8 *in_key, u32 keylen,
+ bool persistent)
+{
+ struct exynos_fmp *fmp = ci->ctx;
+ int ret = 0;
+ int keylen_org = keylen;
+
+ if (!fmp || !in_key) {
+ pr_err("%s: invalid input param\n", __func__);
+ return -EINVAL;
+ }
+
+ /* set key_size & fmp_key_size */
+ if (ci->algo_mode == EXYNOS_FMP_ALGO_MODE_AES_XTS)
+ keylen = keylen >> 1;
+ switch (keylen) {
+ case FMP_KEY_SIZE_16:
+ ci->fmp_key_size = EXYNOS_FMP_KEY_SIZE_16;
+ break;
+ case FMP_KEY_SIZE_32:
+ ci->fmp_key_size = EXYNOS_FMP_KEY_SIZE_32;
+ break;
+ default:
+ pr_err("%s: FMP doesn't support key size %d\n", __func__,
+ keylen);
+ return -ENOKEY;
+ }
+ ci->key_size = keylen_org;
+
+ /* set key */
+ if (persistent) {
+ ci->enc_mode = EXYNOS_FMP_DISK_ENC;
+ ret = fmplib_set_disk_key(fmp, in_key, ci->key_size);
+ if (ret)
+ pr_err("%s: Fail to set FMP disk key\n", __func__);
+ } else {
+ ci->enc_mode = EXYNOS_FMP_FILE_ENC;
+ memset(ci->key, 0, sizeof(ci->key));
+ memcpy(ci->key, in_key, ci->key_size);
+ }
+ return ret;
+}
+
+int exynos_fmp_clearkey(struct fmp_crypto_info *ci)
+{
+ struct exynos_fmp *fmp = ci->ctx;
+ int ret = 0;
+
+ if (!fmp) {
+ pr_err("%s: invalid input param\n", __func__);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (ci->enc_mode == EXYNOS_FMP_DISK_ENC) {
+ ret = fmplib_clear_disk_key(fmp);
+ if (ret)
+ pr_err("%s: fail to clear FMP disk key\n",
__func__);
+ } else if (ci->enc_mode == EXYNOS_FMP_FILE_ENC) {
+ memset(ci->key, 0, sizeof(ci->key));
+ ci->key_size = 0;
+ } else {
+ pr_err("%s: invalid algo mode:%d\n", __func__,
ci->enc_mode);
+ ret = -EINVAL;
+ }
+out:
+ return ret;
+}
+
+int exynos_fmp_test_crypt(struct fmp_crypto_info *ci,
+ const uint8_t *iv, uint32_t ivlen, uint8_t *src,
+ uint8_t *dst, uint32_t len, bool enc, void *priv)
+{
+ struct exynos_fmp *fmp = ci->ctx;
+ int ret = 0;
+
+ if (!fmp || !iv || !src || !dst) {
+ pr_err("%s: invalid input: fmp:%p, iv:%p, s:%p, d:%p\n",
+ __func__, fmp, iv, src, dst);
+ return -EINVAL;
+ }
+
+ /* init fmp test to get test block */
+ fmp->test_data = fmp_test_init(fmp);
+ if (!fmp->test_data) {
+ dev_err(fmp->dev, "%s: fail to initialize fmp test.",
+ __func__);
+ goto err;
+ }
+
+ /* setiv */
+ if (iv && (ivlen <= FMP_IV_SIZE_16)) {
+ memset(fmp->test_data->iv, 0, FMP_IV_SIZE_16);
+ memcpy(fmp->test_data->iv, iv, ivlen);
+ } else {
+ dev_err(fmp->dev, "%s: fail to set fmp iv. ret(%d)",
+ __func__, ret);
+ goto err;
+ }
+
+ /* do crypt: priv: struct crypto_diskcipher */
+ ret = fmp_test_crypt(fmp, fmp->test_data,
+ src, dst, len, enc ? ENCRYPT : DECRYPT, priv, ci);
+ if (ret)
+ dev_err(fmp->dev, "%s: fail to run fmp test. ret(%d)",
+ __func__, ret);
+
+err:
+ if (fmp->test_data)
+ fmp_test_exit(fmp->test_data);
+ return ret;
+}
+
+int exynos_fmp_smu_abort(int id)
+{
+ int ret = 0;
+
+ if (id == SMU_ID_MAX)
+ return 0;
+
+ ret = exynos_smc(SMC_CMD_SMU, SMU_ABORT, id, 0);
+ if (ret)
+ pr_err("%s: Fail smc call. ret(%d)\n", __func__, ret);
+
+ return ret;
+}
+
+#define CFG_DESCTYPE_3 0x3
+int exynos_fmp_sec_cfg(int fmp_id, int smu_id, bool init)
+{
+ int ret = 0;
+
+ if (fmp_id != SMU_ID_MAX) {
+ ret = exynos_smc(SMC_CMD_FMP_SECURITY, 0,
+ fmp_id, CFG_DESCTYPE_3);
+ if (ret)
+ pr_err("%s: Fail smc call for FMP_SECURITY.
ret(%d)\n",
+ __func__, ret);
+ }
+
+ if (smu_id != SMU_ID_MAX) {
+ if (init)
+ ret = exynos_smc(SMC_CMD_SMU, SMU_INIT, smu_id, 0);
+ else
+ ret = exynos_smc(SMC_CMD_FMP_SMU_RESUME, 0, smu_id,
0);
+ if (ret)
+ pr_err("%s: Fail smc call cmd:%d. ret(%d)\n",
+ __func__, init, ret);
+ }
+
+ return ret;
+}
+
+void *exynos_fmp_init(struct platform_device *pdev)
+{
+ struct exynos_fmp *fmp;
+
+ if (!pdev) {
+ pr_err("%s: Invalid platform_device.\n", __func__);
+ return NULL;
+ }
+
+ fmp = devm_kzalloc(&pdev->dev, sizeof(struct exynos_fmp),
GFP_KERNEL);
+ if (!fmp)
+ return NULL;
+
+ fmp->dev = &pdev->dev;
+ if (!fmp->dev) {
+ pr_err("%s: Invalid device.\n", __func__);
+ goto err_dev;
+ }
+
+ /* init disk key status */
+ fmp->status_disk_key = KEY_CLEAR;
+
+ dev_info(fmp->dev, "Exynos FMP Version: %s\n", FMP_DRV_VERSION);
+ return fmp;
+
+err_dev:
+ kzfree(fmp);
+ return NULL;
+}
+
+void exynos_fmp_exit(struct exynos_fmp *fmp)
+{
+ kzfree(fmp);
+}
diff --git a/drivers/crypto/fmp/fmp_crypt.c b/drivers/crypto/fmp/fmp_crypt.c
new file mode 100644
index 0000000..78becb5
--- /dev/null
+++ b/drivers/crypto/fmp/fmp_crypt.c
@@ -0,0 +1,243 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Exynos FMP crypt interface
+ *
+ * Copyright (C) 2018 Samsung Electronics Co., Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/slab.h>
+#include <linux/bio.h>
+#include <linux/crypto.h>
+#include <linux/scatterlist.h>
+#include <crypto/fmp.h>
+#include <crypto/diskcipher.h>
+
+int exynos_fmp_crypt_clear(struct bio *bio, void *table_addr)
+{
+ struct crypto_diskcipher *dtfm = crypto_diskcipher_get(bio);
+ struct fmp_crypto_info *ci;
+ struct fmp_request req;
+ int ret = 0;
+
+ if (unlikely(IS_ERR(dtfm))) {
+ pr_warn("%s: fails to get crypt\n", __func__);
+ return -EINVAL;
+ } else if (dtfm) {
+ ci = crypto_tfm_ctx(crypto_diskcipher_tfm(dtfm));
+ if (ci)
+ if (ci->enc_mode == EXYNOS_FMP_FILE_ENC) {
+ req.table = table_addr;
+ ret = crypto_diskcipher_clear_crypt(dtfm,
&req);
+ }
+ }
+ if (ret)
+ pr_err("%s: fail to config desc (bio:%p, tfm:%p, ci:%p
ret:%d)\n",
+ __func__, bio, dtfm, ci, ret);
+ return ret;
+}
+
+int exynos_fmp_crypt_cfg(struct bio *bio, void *table_addr,
+ u32 page_idx, u32 sector_unit)
+{
+ struct crypto_diskcipher *dtfm = crypto_diskcipher_get(bio);
+ u64 iv;
+ struct fmp_request req;
+ int ret = 0;
+
+ if (unlikely(IS_ERR(dtfm))) {
+ pr_warn("%s: fails to get crypt\n", __func__);
+ return -EINVAL;
+ } else if (dtfm) {
+ req.table = table_addr;
+ req.cmdq_enabled = 0;
+ req.iv = &iv;
+ req.ivsize = sizeof(iv);
+ iv = (dtfm->ivmode == IV_MODE_DUN) ? (bio_dun(bio) +
page_idx) :
+ (bio->bi_iter.bi_sector + (sector_t)sector_unit);
+ ret = crypto_diskcipher_set_crypt(dtfm, &req);
+ if (ret)
+ pr_err("%s: fail to config desc (bio:%p, tfm:%p,
ret:%d)\n",
+ __func__, bio, dtfm, ret);
+ return ret;
+ }
+
+ exynos_fmp_bypass(table_addr, 0);
+ return 0;
+}
+
+static int fmp_crypt(struct crypto_diskcipher *tfm, void *priv)
+{
+ struct fmp_crypto_info *ci =
crypto_tfm_ctx(crypto_diskcipher_tfm(tfm));
+
+ return exynos_fmp_crypt(ci, priv);
+}
+
+static int fmp_clear(struct crypto_diskcipher *tfm, void *priv)
+{
+ struct fmp_crypto_info *ci =
crypto_tfm_ctx(crypto_diskcipher_tfm(tfm));
+
+ return exynos_fmp_clear(ci, priv);
+}
+
+static int fmp_setkey(struct crypto_diskcipher *tfm, const char *in_key,
+ u32 keylen, bool persistent)
+{
+ struct fmp_crypto_info *ci =
crypto_tfm_ctx(crypto_diskcipher_tfm(tfm));
+
+ return exynos_fmp_setkey(ci, (char *)in_key, keylen, persistent);
+}
+
+static int fmp_clearkey(struct crypto_diskcipher *tfm)
+{
+ struct fmp_crypto_info *ci =
crypto_tfm_ctx(crypto_diskcipher_tfm(tfm));
+
+ return exynos_fmp_clearkey(ci);
+}
+
+/* support crypto manager test without CRYPTO_MANAGER_DISABLE_TESTS */
+static int fmp_do_test_crypt(struct crypto_diskcipher *tfm,
+ struct diskcipher_test_request *req)
+{
+ if (!req) {
+ pr_err("%s: invalid parameter\n", __func__);
+ return -EINVAL;
+ }
+
+ return
exynos_fmp_test_crypt(crypto_tfm_ctx(crypto_diskcipher_tfm(tfm)),
+ req->iv, tfm->ivsize,
+ sg_virt(req->src), sg_virt(req->dst),
+ req->cryptlen, req->enc ? 1 : 0, tfm);
+}
+
+
+static inline void fmp_algo_init(struct crypto_tfm *tfm,
+ enum fmp_crypto_algo_mode algo)
+{
+ struct fmp_crypto_info *ci = crypto_tfm_ctx(tfm);
+ struct crypto_diskcipher *diskc = __crypto_diskcipher_cast(tfm);
+ struct diskcipher_alg *alg = crypto_diskcipher_alg(diskc);
+
+ /* This field's stongly aligned 'fmp_crypto_info->use_diskc' */
+ diskc->algo = (u32)algo;
+ diskc->ivsize = FMP_IV_SIZE_16;
+ ci->ctx = dev_get_drvdata(alg->dev);
+ ci->algo_mode = algo;
+}
+
+static int fmp_aes_xts_init(struct crypto_tfm *tfm)
+{
+ fmp_algo_init(tfm, EXYNOS_FMP_ALGO_MODE_AES_XTS);
+ return 0;
+}
+
+static int fmp_cbc_aes_init(struct crypto_tfm *tfm)
+{
+ fmp_algo_init(tfm, EXYNOS_FMP_ALGO_MODE_AES_CBC);
+ return 0;
+}
+
+static struct diskcipher_alg fmp_algs[] = {{
+ .base = {
+ .cra_name = "xts(aes)-disk",
+ .cra_driver_name = "xts(aes)-disk(fmp)",
+ .cra_priority = 200,
+ .cra_module = THIS_MODULE,
+ .cra_ctxsize = sizeof(struct fmp_crypto_info),
+ .cra_init = fmp_aes_xts_init,
+ }
+}, {
+ .base = {
+ .cra_name = "cbc(aes)-disk",
+ .cra_driver_name = "cbc(aes)-disk(fmp)",
+ .cra_priority = 200,
+ .cra_module = THIS_MODULE,
+ .cra_ctxsize = sizeof(struct fmp_crypto_info),
+ .cra_init = fmp_cbc_aes_init,
+ }
+} };
+
+static int exynos_fmp_probe(struct platform_device *pdev)
+{
+ struct diskcipher_alg *alg;
+ void *fmp_ctx = exynos_fmp_init(pdev);
+ int ret;
+ int i;
+
+ if (!fmp_ctx) {
+ dev_err(&pdev->dev,
+ "%s: Fail to register diskciphero\n", __func__);
+ return -EINVAL;
+ }
+ dev_set_drvdata(&pdev->dev, fmp_ctx);
+
+ for (i = 0; i < ARRAY_SIZE(fmp_algs); i++) {
+ alg = &fmp_algs[i];
+ alg->dev = &pdev->dev;
+ alg->init = NULL;
+ alg->setkey = fmp_setkey;
+ alg->clearkey = fmp_clearkey;
+ alg->crypt = fmp_crypt;
+ alg->clear = fmp_clear;
+ alg->do_crypt = fmp_do_test_crypt;
+ }
+ ret = crypto_register_diskciphers(fmp_algs, ARRAY_SIZE(fmp_algs));
+ if (ret) {
+ dev_err(&pdev->dev,
+ "%s: Fail to register diskciphero. ret = %d\n",
+ __func__, ret);
+ return -EINVAL;
+ }
+ dev_info(&pdev->dev, "Exynos FMP driver is registered to
diskcipher\n");
+ return 0;
+}
+
+static int exynos_fmp_remove(struct platform_device *pdev)
+{
+ void *drv_data = dev_get_drvdata(&pdev->dev);
+
+ if (!drv_data) {
+ pr_err("%s: Fail to get drvdata\n", __func__);
+ return 0;
+ }
+ crypto_unregister_diskciphers(fmp_algs, ARRAY_SIZE(fmp_algs));
+ exynos_fmp_exit(drv_data);
+ return 0;
+}
+
+static const struct of_device_id exynos_fmp_match[] = {
+ { .compatible = "samsung,exynos-fmp" },
+ {},
+};
+
+static struct platform_driver exynos_fmp_driver = {
+ .driver = {
+ .name = "exynos-fmp",
+ .owner = THIS_MODULE,
+ .pm = NULL,
+ .of_match_table = exynos_fmp_match,
+ },
+ .probe = exynos_fmp_probe,
+ .remove = exynos_fmp_remove,
+};
+
+static int __init fmp_init(void)
+{
+ return platform_driver_register(&exynos_fmp_driver);
+}
+late_initcall(fmp_init);
+
+static void __exit fmp_exit(void)
+{
+ platform_driver_unregister(&exynos_fmp_driver);
+}
+module_exit(fmp_exit);
+MODULE_DESCRIPTION("Exynos Spedific crypto algo driver");
diff --git a/drivers/crypto/fmp/fmp_test.c b/drivers/crypto/fmp/fmp_test.c
new file mode 100644
index 0000000..fb47bbd
--- /dev/null
+++ b/drivers/crypto/fmp/fmp_test.c
@@ -0,0 +1,310 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Exynos FMP cipher driver
+ *
+ * Copyright (C) 2016 Samsung Electronics Co., Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/crypto.h>
+#include <linux/buffer_head.h>
+#include <linux/genhd.h>
+#include <linux/delay.h>
+#include <linux/fs.h>
+#include <linux/blk_types.h>
+#include <crypto/fmp.h>
+
+#include "fmp_test.h"
+
+#define MAX_SCAN_PART (50)
+#define MAX_RETRY_COUNT (0x100000)
+
+static dev_t find_devt_for_test(struct exynos_fmp *fmp,
+ struct fmp_test_data *data)
+{
+ int i, idx = 0;
+ uint32_t count = 0;
+ uint64_t size;
+ uint64_t size_list[MAX_SCAN_PART];
+ dev_t devt_list[MAX_SCAN_PART];
+ dev_t devt_scan = 0;
+ dev_t devt = 0;
+ struct block_device *bdev = NULL;
+ struct device *dev = fmp->dev;
+ fmode_t fmode = FMODE_WRITE | FMODE_READ;
+
+ memset(size_list, 0, sizeof(size_list));
+ memset(devt_list, 0, sizeof(devt_list));
+ do {
+ for (i = 1; i < MAX_SCAN_PART; i++) {
+ devt_scan = blk_lookup_devt(data->block_type, i);
+ bdev = blkdev_get_by_dev(devt_scan, fmode, NULL);
+ if (IS_ERR(bdev))
+ continue;
+ else {
+ size_list[idx] =
+ (uint64_t) i_size_read(bdev->bd_inode);
+ devt_list[idx++] = devt_scan;
+ blkdev_put(bdev, fmode);
+ }
+ }
+ if (!idx) {
+ mdelay(100);
+ count++;
+ continue;
+ }
+ for (i = 0; i < idx; i++) {
+ if (i == 0) {
+ size = size_list[i];
+ devt = devt_list[i];
+ } else {
+ if (size < size_list[i])
+ devt = devt_list[i];
+ }
+ }
+ bdev = blkdev_get_by_dev(devt, fmode, NULL);
+ dev_dbg(dev, "Found partno %d for FMP test\n",
+ bdev->bd_part->partno);
+ blkdev_put(bdev, fmode);
+ return devt;
+ } while (count < MAX_RETRY_COUNT);
+ dev_err(dev, "Block device isn't initialized yet for FMP test\n");
+ return (dev_t) 0;
+}
+
+static int get_fmp_host_type(struct device *dev,
+ struct fmp_test_data *data)
+{
+ int ret;
+ struct device_node *node = dev->of_node;
+ const char *type;
+
+ ret =
+ of_property_read_string_index(node, "exynos,block-type", 0,
&type);
+ if (ret) {
+ pr_err("%s: Could not get block type\n", __func__);
+ return ret;
+ }
+ strscpy(data->block_type, type, FMP_BLOCK_TYPE_NAME_LEN);
+ return 0;
+}
+
+static int get_fmp_test_block_offset(struct device *dev,
+ struct fmp_test_data *data)
+{
+ int ret = 0;
+ struct device_node *node = dev->of_node;
+ uint32_t offset;
+
+ ret = of_property_read_u32(node, "exynos,fips-block_offset",
&offset);
+ if (ret) {
+ pr_err("%s: Could not get fips test block offset\n",
__func__);
+ ret = -EINVAL;
+ goto err;
+ }
+ data->test_block_offset = offset;
+err:
+ return ret;
+}
+
+/* test block device init for fmp test */
+struct fmp_test_data *fmp_test_init(struct exynos_fmp *fmp)
+{
+ int ret = 0;
+ struct fmp_test_data *data;
+ struct device *dev;
+ struct inode *inode;
+ struct super_block *sb;
+ unsigned long blocksize;
+ unsigned char blocksize_bits;
+ fmode_t fmode = FMODE_WRITE | FMODE_READ;
+
+ if (!fmp) {
+ pr_err("%s: Invalid exynos fmp struct\n", __func__);
+ return NULL;
+ }
+
+ dev = fmp->dev;
+ data = kmalloc(sizeof(struct fmp_test_data), GFP_KERNEL);
+ if (!data)
+ return NULL;
+
+ ret = get_fmp_host_type(dev, data);
+ if (ret) {
+ dev_err(dev, "%s: Fail to get host type. ret(%d)", __func__,
+ ret);
+ goto err;
+ }
+ data->devt = find_devt_for_test(fmp, data);
+ if (!data->devt) {
+ dev_err(dev, "%s: Fail to find devt for self test\n",
__func__);
+ goto err;
+ }
+ data->bdev = blkdev_get_by_dev(data->devt, fmode, NULL);
+ if (IS_ERR(data->bdev)) {
+ dev_err(dev, "%s: Fail to open block device\n", __func__);
+ goto err;
+ }
+ ret = get_fmp_test_block_offset(dev, data);
+ if (ret) {
+ dev_err(dev, "%s: Fail to get fips offset. ret(%d)\n",
+ __func__, ret);
+ goto err;
+ }
+ inode = data->bdev->bd_inode;
+ sb = inode->i_sb;
+ blocksize = sb->s_blocksize;
+ blocksize_bits = sb->s_blocksize_bits;
+ data->sector =
+ (i_size_read(inode) -
+ (blocksize * data->test_block_offset)) >> blocksize_bits;
+
+ return data;
+err:
+ kzfree(data);
+ return NULL;
+}
+
+int fmp_cipher_run(struct exynos_fmp *fmp, struct fmp_test_data *fdata,
+ uint8_t *data, uint32_t len, bool bypass, uint32_t write,
+ void *priv, struct fmp_crypto_info *ci)
+{
+ int ret = 0;
+ struct device *dev;
+ static struct buffer_head *bh;
+ u32 org_algo_mode;
+ int op_flags;
+
+ if (!fmp || !fdata || !ci) {
+ pr_err("%s: Invalid fmp struct: %p, %p, %p\n",
+ __func__, fmp, fdata, ci);
+ return -EINVAL;
+ }
+ dev = fmp->dev;
+
+ bh = __getblk(fdata->bdev, fdata->sector, FMP_BLK_SIZE);
+ if (!bh) {
+ dev_err(dev, "%s: Fail to get block from bdev\n", __func__);
+ return -ENODEV;
+ }
+
+ /* set algo_mode for test */
+ org_algo_mode = ci->algo_mode;
+ if (bypass)
+ ci->algo_mode = EXYNOS_FMP_BYPASS_MODE;
+ ci->algo_mode |= EXYNOS_FMP_ALGO_MODE_TEST;
+
+ get_bh(bh);
+ /* priv is diskc for crypto test. */
+ if (!priv) {
+ /* ci is fmp_test_data->ci */
+ fmp->test_data = fdata;
+ ci->ctx = fmp;
+ ci->use_diskc = 0;
+ ci->enc_mode = EXYNOS_FMP_FILE_ENC;
+ bh->b_private = ci;
+ } else {
+ /* ci is crypto_tfm_ctx(tfm) */
+ bh->b_private = priv;
+ }
+ op_flags = REQ_CRYPT;
+
+ if (write == WRITE_MODE) {
+ memcpy(bh->b_data, data, len);
+ set_buffer_dirty(bh);
+ ret = __sync_dirty_buffer(bh, op_flags | REQ_SYNC);
+ if (ret) {
+ dev_err(dev, "%s: IO error syncing for write
mode\n",
+ __func__);
+ ret = -EIO;
+ goto out;
+ }
+ memset(bh->b_data, 0, FMP_BLK_SIZE);
+ } else {
+ lock_buffer(bh);
+ bh->b_end_io = end_buffer_read_sync;
+ submit_bh(REQ_OP_READ, REQ_SYNC | REQ_PRIO | op_flags, bh);
+ wait_on_buffer(bh);
+ if (unlikely(!buffer_uptodate(bh))) {
+ ret = -EIO;
+ goto out;
+ }
+ memcpy(data, bh->b_data, len);
+ }
+out:
+ if (ci)
+ ci->algo_mode = org_algo_mode;
+ put_bh(bh);
+ return ret;
+}
+
+int fmp_test_crypt(struct exynos_fmp *fmp, struct fmp_test_data *fdata,
+ uint8_t *src, uint8_t *dst, uint32_t len, uint32_t enc,
+ void *priv, struct fmp_crypto_info *ci)
+{
+ int ret = 0;
+
+ if (!fdata) {
+ pr_err("%s: Invalid exynos fmp struct\n", __func__);
+ return -1;
+ }
+
+ if (enc == ENCRYPT) {
+ ret = fmp_cipher_run(fmp, fdata, src, len, 0,
+ WRITE_MODE, priv, ci);
+ if (ret) {
+ pr_err("Fail to run fmp cipher ret(%d)\n",
+ ret);
+ goto err;
+ }
+ ret = fmp_cipher_run(fmp, fdata, dst, len, 1,
+ READ_MODE, priv, ci);
+ if (ret) {
+ pr_err("Fail to run fmp cipher ret(%d)\n",
+ ret);
+ goto err;
+ }
+ } else if (enc == DECRYPT) {
+ ret = fmp_cipher_run(fmp, fdata, src, len, 1,
+ WRITE_MODE, priv, ci);
+ if (ret) {
+ pr_err("Fail to run fmp cipher ret(%d)\n",
+ ret);
+ goto err;
+ }
+ ret = fmp_cipher_run(fmp, fdata, dst, len, 0,
+ READ_MODE, priv, ci);
+ if (ret) {
+ pr_err("Fail to run fmp cipher ret(%d)\n",
+ ret);
+ goto err;
+ }
+ } else {
+ pr_err("%s: Invalid enc %d mode\n", __func__, enc);
+ goto err;
+ }
+
+ return 0;
+err:
+ return -EINVAL;
+}
+
+/* test block device release for fmp test */
+void fmp_test_exit(struct fmp_test_data *fdata)
+{
+ fmode_t fmode = FMODE_WRITE | FMODE_READ;
+
+ if (!fdata) {
+ pr_err("%s: Invalid exynos fmp struct\n", __func__);
+ return;
+ }
+ if (fdata->bdev)
+ blkdev_put(fdata->bdev, fmode);
+ kzfree(fdata);
+}
diff --git a/drivers/crypto/fmp/fmp_test.h b/drivers/crypto/fmp/fmp_test.h
new file mode 100644
index 0000000..42af22a
--- /dev/null
+++ b/drivers/crypto/fmp/fmp_test.h
@@ -0,0 +1,30 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2016 Samsung Electronics Co., Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef _FMP_TEST_H_
+#define _FMP_TEST_H_
+
+#define FMP_BLK_SIZE (4096)
+
+#define WRITE_MODE 1
+#define READ_MODE 2
+
+#define ENCRYPT 1
+#define DECRYPT 2
+
+struct fmp_test_data *fmp_test_init(struct exynos_fmp *fmp);
+int fmp_cipher_run(struct exynos_fmp *fmp, struct fmp_test_data *fdata,
+ uint8_t *data, uint32_t len, bool bypass, uint32_t write,
+ void *priv, struct fmp_crypto_info *ci);
+int fmp_test_crypt(struct exynos_fmp *fmp, struct fmp_test_data *fdata,
+ uint8_t *src, uint8_t *dst, uint32_t len, uint32_t enc,
+ void *priv, struct fmp_crypto_info *ci);
+void fmp_test_exit(struct fmp_test_data *fdata);
+#endif /* _FMP_TEST_H_ */
diff --git a/include/crypto/fmp.h b/include/crypto/fmp.h
new file mode 100644
index 0000000..b0ac483
--- /dev/null
+++ b/include/crypto/fmp.h
@@ -0,0 +1,324 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2016 Samsung Electronics Co., Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef _EXYNOS_FMP_H_
+#define _EXYNOS_FMP_H_
+
+#include <linux/platform_device.h>
+#include <linux/miscdevice.h>
+
+#define FMP_DRV_VERSION "1.5.0"
+
+#define FMP_KEY_SIZE_16 16
+#define FMP_KEY_SIZE_32 32
+#define FMP_IV_SIZE_16 16
+
+#define FMP_CBC_MAX_KEY_SIZE FMP_KEY_SIZE_16
+#define FMP_XTS_MAX_KEY_SIZE ((FMP_KEY_SIZE_32) * (2))
+#define FMP_MAX_KEY_SIZE FMP_XTS_MAX_KEY_SIZE
+
+#define FMP_HOST_TYPE_NAME_LEN 8
+#define FMP_BLOCK_TYPE_NAME_LEN 8
+
+#define FMP_SECTOR_SIZE 0x1000
+#define FMP_MIN_SECTOR_SIZE 0x200
+#define NUM_SECTOR_UNIT ((FMP_SECTOR_SIZE)/(FMP_MIN_SECTOR_SIZE))
+
+#define MAX_AES_XTS_TRANSFER_SIZE 0x1000
+
+#ifndef TRUE
+#define TRUE 1
+#endif
+
+#ifndef FALSE
+#define FALSE 0
+#endif
+
+enum fmp_crypto_algo_mode {
+ EXYNOS_FMP_BYPASS_MODE = 0,
+ EXYNOS_FMP_ALGO_MODE_AES_CBC = 1,
+ EXYNOS_FMP_ALGO_MODE_AES_XTS = 2,
+};
+
+enum fmp_crypto_key_size {
+ EXYNOS_FMP_KEY_SIZE_16 = 16,
+ EXYNOS_FMP_KEY_SIZE_32 = 32,
+};
+
+enum fmp_crypto_enc_mode {
+ EXYNOS_FMP_FILE_ENC = 0,
+ EXYNOS_FMP_DISK_ENC = 1, /* use persistent key */
+ EXYNOS_FMP_ENC_MAX
+};
+
+enum fmp_disk_key_status {
+ KEY_STORED = 0,
+ KEY_SET = 1,
+ KEY_CLEAR = 2,
+ KEY_ERROR = -1,
+};
+
+struct fmp_crypto_info {
+ /* This field's stongly aligned 'crypto_diskcipher->algo' */
+ u32 use_diskc;
+ u8 key[FMP_MAX_KEY_SIZE];
+ u32 key_size;
+ enum fmp_crypto_key_size fmp_key_size;
+ enum fmp_crypto_enc_mode enc_mode;
+ enum fmp_crypto_algo_mode algo_mode;
+ void *ctx;
+};
+
+#if defined(CONFIG_MMC_DW_EXYNOS_FMP) &&
defined(CONFIG_SCSI_UFS_EXYNOS_FMP)
+#error "FMP doesn't support muti-host"
+#elif defined(CONFIG_MMC_DW_EXYNOS_FMP)
+struct fmp_table_setting {
+ __le32 des0; /* des0 */
+#define GET_CMDQ_LENGTH(d) \
+ (((d)->des0 & 0xffff0000) >> 16)
+ __le32 des1; /* des1 */
+ __le32 des2; /* des2 */
+#define FKL BIT(26)
+#define DKL BIT(27)
+#define SET_KEYLEN(d, v) ((d)->des2 |= (uint32_t)v)
+#define SET_FAS(d, v) \
+ ((d)->des2 = ((d)->des2 & 0xcfffffff) | v << 28)
+#define SET_DAS(d, v) \
+ ((d)->des2 = ((d)->des2 & 0x3fffffff) | v << 30)
+#define GET_FAS(d) ((d)->des2 & 0x30000000)
+#define GET_DAS(d) ((d)->des2 & 0xc0000000)
+#define GET_LENGTH(d) \
+ ((d)->des2 & 0x3ffffff)
+ __le32 des3; /* des3 */
+ /* CMDQ Operation */
+#define FKL_CMDQ BIT(0)
+#define DKL_CMDQ BIT(1)
+#define SET_CMDQ_KEYLEN(d, v) ((d)->des2 |= (uint32_t)v)
+#define SET_CMDQ_FAS(d, v) \
+ ((d)->des3 = ((d)->des3 & 0xfffffff3) | v << 2)
+#define SET_CMDQ_DAS(d, v) \
+ ((d)->des3 = ((d)->des3 & 0xffffffcf) | v << 4)
+#define GET_CMDQ_FAS(d) ((d)->des3 & 0x0000000c)
+#define GET_CMDQ_DAS(d) ((d)->des3 & 0x00000030)
+ __le32 reserved0; /* des4 */
+ __le32 reserved1;
+ __le32 reserved2;
+ __le32 reserved3;
+ __le32 file_iv0; /* des8 */
+ __le32 file_iv1;
+ __le32 file_iv2;
+ __le32 file_iv3;
+ __le32 file_enckey0; /* des12 */
+ __le32 file_enckey1;
+ __le32 file_enckey2;
+ __le32 file_enckey3;
+ __le32 file_enckey4;
+ __le32 file_enckey5;
+ __le32 file_enckey6;
+ __le32 file_enckey7;
+ __le32 file_twkey0; /* des20 */
+ __le32 file_twkey1;
+ __le32 file_twkey2;
+ __le32 file_twkey3;
+ __le32 file_twkey4;
+ __le32 file_twkey5;
+ __le32 file_twkey6;
+ __le32 file_twkey7;
+ __le32 disk_iv0; /* des28 */
+ __le32 disk_iv1;
+ __le32 disk_iv2;
+ __le32 disk_iv3;
+};
+#elif defined(CONFIG_SCSI_UFS_EXYNOS_FMP)
+struct fmp_table_setting {
+ __le32 des0; /* des0 */
+#define GET_CMDQ_LENGTH(d) \
+ (((d)->des0 & 0xffff0000) >> 16)
+ __le32 des1; /* des1 */
+ __le32 des2; /* des2 */
+ __le32 des3; /* des3 */
+/* Legacy Operation */
+#define FKL BIT(26)
+#define DKL BIT(27)
+#define SET_KEYLEN(d, v) ((d)->des3 |= (uint32_t)v)
+#define SET_FAS(d, v) \
+ ((d)->des3 = ((d)->des3 & 0xcfffffff) | v << 28)
+#define SET_DAS(d, v) \
+ ((d)->des3 = ((d)->des3 & 0x3fffffff) | v << 30)
+#define GET_FAS(d) ((d)->des3 & 0x30000000)
+#define GET_DAS(d) ((d)->des3 & 0xc0000000)
+#define GET_LENGTH(d) \
+ ((d)->des3 & 0x3ffffff)
+/* CMDQ Operation */
+#define FKL_CMDQ BIT(0)
+#define DKL_CMDQ BIT(1)
+#define SET_CMDQ_KEYLEN(d, v) ((d)->des3 |= (uint32_t)v)
+#define SET_CMDQ_FAS(d, v) \
+ ((d)->des3 = ((d)->des3 & 0xfffffff3) | v << 2)
+#define SET_CMDQ_DAS(d, v) \
+ ((d)->des3 = ((d)->des3 & 0xffffffcf) | v << 4)
+#define GET_CMDQ_FAS(d) ((d)->des3 & 0x0000000c)
+#define GET_CMDQ_DAS(d) ((d)->des3 & 0x00000030)
+ __le32 file_iv0; /* des4 */
+ __le32 file_iv1; /* des5 */
+ __le32 file_iv2; /* des6 */
+ __le32 file_iv3; /* des7 */
+ __le32 file_enckey0; /* des8 */
+ __le32 file_enckey1; /* des9 */
+ __le32 file_enckey2; /* des10 */
+ __le32 file_enckey3; /* des11 */
+ __le32 file_enckey4; /* des12 */
+ __le32 file_enckey5; /* des13 */
+ __le32 file_enckey6; /* des14 */
+ __le32 file_enckey7; /* des15 */
+ __le32 file_twkey0; /* des16 */
+ __le32 file_twkey1; /* des17 */
+ __le32 file_twkey2; /* des18 */
+ __le32 file_twkey3; /* des19 */
+ __le32 file_twkey4; /* des20 */
+ __le32 file_twkey5; /* des21 */
+ __le32 file_twkey6; /* des22 */
+ __le32 file_twkey7; /* des23 */
+ __le32 disk_iv0; /* des24 */
+ __le32 disk_iv1; /* des25 */
+ __le32 disk_iv2; /* des26 */
+ __le32 disk_iv3; /* des27 */
+ __le32 reserved0; /* des28 */
+ __le32 reserved1; /* des29 */
+ __le32 reserved2; /* des30 */
+ __le32 reserved3; /* des31 */
+};
+#endif
+
+struct fmp_data_setting {
+ struct fmp_crypto_info crypt[EXYNOS_FMP_ENC_MAX];
+ struct fmp_table_setting *table;
+ bool cmdq_enabled;
+};
+
+#define EXYNOS_FMP_ALGO_MODE_MASK (0x3)
+#define EXYNOS_FMP_ALGO_MODE_TEST_OFFSET (0xf)
+#define EXYNOS_FMP_ALGO_MODE_TEST (1 << EXYNOS_FMP_ALGO_MODE_TEST_OFFSET)
+
+struct fmp_test_data {
+ char block_type[FMP_BLOCK_TYPE_NAME_LEN];
+ struct block_device *bdev;
+ sector_t sector;
+ dev_t devt;
+ uint32_t test_block_offset;
+ /* iv to submitted */
+ u8 iv[FMP_IV_SIZE_16];
+ /* diskcipher for test */
+ struct fmp_crypto_info ci;
+};
+
+struct exynos_fmp {
+ struct device *dev;
+ enum fmp_disk_key_status status_disk_key;
+ struct fmp_test_data *test_data;
+};
+
+struct fmp_request {
+ void *table;
+ bool cmdq_enabled;
+ void *iv;
+ u32 ivsize;
+};
+
+static inline void exynos_fmp_bypass(void *desc, bool cmdq_enabled)
+{
+#if defined(CONFIG_MMC_DW_EXYNOS_FMP) ||
defined(CONFIG_SCSI_UFS_EXYNOS_FMP)
+ if (cmdq_enabled) {
+ SET_CMDQ_FAS((struct fmp_table_setting *)desc, 0);
+ SET_CMDQ_DAS((struct fmp_table_setting *)desc, 0);
+ } else {
+ SET_FAS((struct fmp_table_setting *)desc, 0);
+ SET_DAS((struct fmp_table_setting *)desc, 0);
+ }
+#endif
+}
+
+#define ACCESS_CONTROL_ABORT 0x14
+
+#ifndef SMC_CMD_FMP_SECURITY
+/* For FMP/SMU Ctrl */
+#define SMC_CMD_FMP_SECURITY (0xC2001810)
+#define SMC_CMD_FMP_DISK_KEY_STORED (0xC2001820)
+#define SMC_CMD_FMP_DISK_KEY_SET (0xC2001830)
+#define SMC_CMD_FMP_DISK_KEY_CLEAR (0xC2001840)
+#define SMC_CMD_SMU (0xC2001850)
+#define SMC_CMD_FMP_SMU_RESUME (0xC2001860)
+#define SMC_CMD_FMP_SMU_DUMP (0xC2001870)
+#define SMC_CMD_UFS_LOG (0xC2001880)
+
+/* For FMP/SMU Ctrl */
+#define SMC_CMD_FMP_SECURITY (0xC2001810)
+#define SMC_CMD_FMP_DISK_KEY_STORED (0xC2001820)
+#define SMC_CMD_FMP_DISK_KEY_SET (0xC2001830)
+#define SMC_CMD_FMP_DISK_KEY_CLEAR (0xC2001840)
+#define SMC_CMD_SMU (0xC2001850)
+#define SMC_CMD_FMP_SMU_RESUME (0xC2001860)
+#define SMC_CMD_FMP_SMU_DUMP (0xC2001870)
+#define SMC_CMD_UFS_LOG (0xC2001880)
+#endif
+
+enum smu_id {
+ SMU_EMBEDDED = 0,
+ SMU_UFSCARD = 1,
+ SMU_SDCARD = 2,
+ SMU_ID_MAX,
+};
+
+enum smu_command {
+ SMU_INIT = 0,
+ SMU_SET = 1,
+ SMU_ABORT = 2,
+};
+
+/* fmp functions */
+#ifdef CONFIG_EXYNOS_FMP
+int exynos_fmp_sec_cfg(int fmp_id, int smu_id, bool init);
+int exynos_fmp_smu_abort(int id);
+int exynos_fmp_crypt_cfg(struct bio *bio, void *table_base,
+ u32 page_idx, u32 sector_unit);
+int exynos_fmp_crypt_clear(struct bio *bio, void *table_addr);
+#else
+int exynos_fmp_sec_cfg(int fmp_id, int smu_id, bool init)
+{
+ return 0;
+}
+
+int exynos_fmp_smu_abort(int id)
+{
+ return 0;
+}
+
+int exynos_fmp_crypt_cfg(struct bio *bio, void *table_base,
+ u32 page_idx, u32 sector_unit)
+{
+ return 0;
+}
+
+int exynos_fmp_crypt_clear(struct bio *bio, void *table_addr)
+{
+ return 0;
+}
+#endif
+int exynos_fmp_crypt(struct fmp_crypto_info *ci, void *priv);
+int exynos_fmp_clear(struct fmp_crypto_info *ci, void *priv);
+int exynos_fmp_setkey(struct fmp_crypto_info *ci,
+ u8 *in_key, u32 keylen, bool persistent);
+int exynos_fmp_clearkey(struct fmp_crypto_info *ci);
+void *exynos_fmp_init(struct platform_device *pdev);
+void exynos_fmp_exit(struct exynos_fmp *fmp);
+int exynos_fmp_test_crypt(struct fmp_crypto_info *ci,
+ const uint8_t *iv, uint32_t ivlen, uint8_t *src,
+ uint8_t *dst, uint32_t len, bool enc, void *priv);
+#endif /* _EXYNOS_FMP_H_ */
--
2.7.4
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