diff options
Diffstat (limited to 'drivers/staging/ccree/ssi_fips_ext.c')
-rw-r--r-- | drivers/staging/ccree/ssi_fips_ext.c | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/drivers/staging/ccree/ssi_fips_ext.c b/drivers/staging/ccree/ssi_fips_ext.c new file mode 100644 index 0000000..2ac432f --- /dev/null +++ b/drivers/staging/ccree/ssi_fips_ext.c @@ -0,0 +1,96 @@ +/* + * Copyright (C) 2012-2017 ARM Limited or its affiliates. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +/************************************************************** +This file defines the driver FIPS functions that should be +implemented by the driver user. Current implementation is sample code only. +***************************************************************/ + +#include <linux/module.h> +#include "ssi_fips_local.h" +#include "ssi_driver.h" + + +static bool tee_error; +module_param(tee_error, bool, 0644); +MODULE_PARM_DESC(tee_error, "Simulate TEE library failure flag: 0 - no error (default), 1 - TEE error occured "); + +static ssi_fips_state_t fips_state = CC_FIPS_STATE_NOT_SUPPORTED; +static ssi_fips_error_t fips_error = CC_REE_FIPS_ERROR_OK; + +/* +This function returns the FIPS REE state. +The function should be implemented by the driver user, depends on where . +the state value is stored. +The reference code uses global variable. +*/ +int ssi_fips_ext_get_state(ssi_fips_state_t *p_state) +{ + int rc = 0; + + if (p_state == NULL) { + return -EINVAL; + } + + *p_state = fips_state; + + return rc; +} + +/* +This function returns the FIPS REE error. +The function should be implemented by the driver user, depends on where . +the error value is stored. +The reference code uses global variable. +*/ +int ssi_fips_ext_get_error(ssi_fips_error_t *p_err) +{ + int rc = 0; + + if (p_err == NULL) { + return -EINVAL; + } + + *p_err = fips_error; + + return rc; +} + +/* +This function sets the FIPS REE state. +The function should be implemented by the driver user, depends on where . +the state value is stored. +The reference code uses global variable. +*/ +int ssi_fips_ext_set_state(ssi_fips_state_t state) +{ + fips_state = state; + return 0; +} + +/* +This function sets the FIPS REE error. +The function should be implemented by the driver user, depends on where . +the error value is stored. +The reference code uses global variable. +*/ +int ssi_fips_ext_set_error(ssi_fips_error_t err) +{ + fips_error = err; + return 0; +} + + |