core/drivers/crypto/caam/caam_ctrl.c

// SPDX-License-Identifier: BSD-2-Clause
/*
 * Copyright 2017-2019 NXP
 *
 * Brief   CAAM Global Controller.
 */
#include <caam_common.h>
#include <caam_hal_cfg.h>
#include <caam_hal_clk.h>
#include <caam_hal_ctrl.h>
#include <caam_hash.h>
#include <caam_jr.h>
#include <caam_pwr.h>
#include <caam_rng.h>
#include <caam_utils_mem.h>
#include <initcall.h>
#include <kernel/panic.h>
#include <tee_api_types.h>

/* Crypto driver initialization */
static TEE_Result crypto_driver_init(void)
{
	TEE_Result retresult = TEE_ERROR_GENERIC;
	enum caam_status retstatus = CAAM_FAILURE;
	struct caam_jrcfg jrcfg = {};

	/* Enable the CAAM Clock */
	caam_hal_clk_enable(true);

	retstatus = caam_hal_cfg_get_conf(&jrcfg);
	if (retstatus != CAAM_NO_ERROR) {
		retresult = TEE_ERROR_NOT_SUPPORTED;
		goto exit_init;
	}

	/* Initialize the CAAM Controller */
	caam_hal_ctrl_init(jrcfg.base);

	/* Initialize the Job Ring to be used */
	retstatus = caam_jr_init(&jrcfg);
	if (retstatus != CAAM_NO_ERROR) {
		retresult = TEE_ERROR_GENERIC;
		goto exit_init;
	}

	/* Initialize the RNG Module */
	retstatus = caam_rng_init(jrcfg.base);
	if (retstatus != CAAM_NO_ERROR) {
		retresult = TEE_ERROR_GENERIC;
		goto exit_init;
	}

	/* Initialize the Hash Module */
	retstatus = caam_hash_init(jrcfg.base);
	if (retstatus != CAAM_NO_ERROR) {
		retresult = TEE_ERROR_GENERIC;
		goto exit_init;
	}

	/* Everything is OK, register the Power Management handler */
	caam_pwr_init();

	/*
	 * Configure Job Rings to NS World
	 * If the Driver Crypto is not used CFG_NXP_CAAM_RUNTIME_JR is not
	 * enable, hence relax the JR used for the CAAM configuration to
	 * the Non-Secure
	 */
	if (jrcfg.base)
		caam_hal_cfg_setup_nsjobring(&jrcfg);

	retresult = TEE_SUCCESS;
exit_init:
	if (retresult != TEE_SUCCESS) {
		EMSG("CAAM Driver initialization (0x%" PRIx32 ")", retresult);
		panic();
	}

	return retresult;
}

driver_init(crypto_driver_init);

/* Crypto driver late initialization to complete on-going CAAM operations */
static TEE_Result init_caam_late(void)
{
	enum caam_status ret = CAAM_BUSY;

	ret = caam_jr_complete();

	if (ret != CAAM_NO_ERROR) {
		EMSG("CAAM initialization failed");
		panic();
	}

	return TEE_SUCCESS;
}

driver_init_late(init_caam_late);