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Commit b2225a04 authored by Santosh Dronamraju's avatar Santosh Dronamraju
Browse files

soc: qcom: Add support for EMMC storage type 



Add support for parsing EMMC specific crypto engine type
in crypto qti tz driver.

Test:
Device booted upto UI with File Based Encryption enabled.

Change-Id: Id6354e69dc32a2c68ba81450e8a9c0e015779f4f
Signed-off-by: default avatarSantosh Dronamraju <sdronamr@codeaurora.org>
parent 32339e54

drivers/soc/qcom/crypto-qti-tz.c

+33 −5
Original line number Diff line number Diff line
@@ -2,7 +2,7 @@ 
/*

 * Crypto TZ library for storage encryption.

 *

 * Copyright (c) 2020, Linux Foundation. All rights reserved.

 * Copyright (c) 2020-2021, Linux Foundation. All rights reserved.

 */



#include <asm/cacheflush.h>
@@ -10,6 +10,7 @@ 
#include <linux/qtee_shmbridge.h>

#include <linux/crypto-qti-common.h>

#include <linux/module.h>

#include <linux/of.h>

#include "crypto-qti-platform.h"



#define ICE_CIPHER_MODE_XTS_256 3
@@ -17,6 +18,24 @@ 
#define SDCC_CE 20

#define UFS_CARD_CE 30



static bool is_boot_dev_type_emmc(void)

{

	struct device_node *np;

	const char *bootparams;



	np = of_find_node_by_path("/chosen");

	of_property_read_string(np, "bootargs", &bootparams);

	if (!bootparams)

		pr_err("%s: failed to get bootargs property\n", __func__);

	else if (strnstr(bootparams, "androidboot.bootdevice",

			strlen(bootparams)) &&

			strnstr(bootparams, "sdhci", strlen(bootparams)))

		return true;



	return false;



}



int crypto_qti_program_key(struct crypto_vops_qti_entry *ice_entry,

			   const struct blk_crypto_key *key, unsigned int slot,

			   unsigned int data_unit_mask, int capid)
@@ -31,6 +50,11 @@ int crypto_qti_program_key(struct crypto_vops_qti_entry *ice_entry, 
	memcpy(shm.vaddr, key->raw, key->size);

	qtee_shmbridge_flush_shm_buf(&shm);



	if (is_boot_dev_type_emmc())

		err = qcom_scm_config_set_ice_key(slot, shm.paddr, key->size,

						ICE_CIPHER_MODE_XTS_256,

						data_unit_mask, SDCC_CE);

	else

		err = qcom_scm_config_set_ice_key(slot, shm.paddr, key->size,

						ICE_CIPHER_MODE_XTS_256,

						data_unit_mask, UFS_CE);
@@ -50,7 +74,11 @@ int crypto_qti_invalidate_key(struct crypto_vops_qti_entry *ice_entry, 
{

	int err = 0;



	if (is_boot_dev_type_emmc())

		err = qcom_scm_clear_ice_key(slot, SDCC_CE);

	else

		err = qcom_scm_clear_ice_key(slot, UFS_CE);



	if (err)

		pr_err("%s:SCM call Error: 0x%x\n", __func__, err);