// SPDX-License-Identifier: BSD-2-Clause
/*
 * Copyright (C) Foundries Ltd. 2020 - All Rights Reserved
 * Author: Jorge Ramirez <jorge@foundries.io>
 */

#include <config.h>
#include <initcall.h>
#include <kernel/panic.h>
#include <se050.h>

sss_se05x_key_store_t *se050_kstore;
sss_se05x_session_t *se050_session;
struct sss_se05x_ctx se050_ctx;

TEE_Result se050_core_early_init(struct se050_scp_key *keys)
{
	sss_status_t status = kStatus_SSS_Success;

	status = se050_session_open(&se050_ctx, keys);
	if (status != kStatus_SSS_Success)
		return TEE_ERROR_GENERIC;

	if (IS_ENABLED(CFG_CORE_SE05X_INIT_NVM)) {
		status = se050_factory_reset(&se050_ctx.session.s_ctx);
		if (status != kStatus_SSS_Success)
			return TEE_ERROR_GENERIC;
	}

	if (se050_ctx.session.subsystem == kType_SSS_SubSystem_NONE)
		return TEE_ERROR_GENERIC;

	status = se050_key_store_and_object_init(&se050_ctx);
	if (status != kStatus_SSS_Success)
		return TEE_ERROR_GENERIC;

	se050_session = (sss_se05x_session_t *)((void *)&se050_ctx.session);
	se050_kstore = (sss_se05x_key_store_t *)((void *)&se050_ctx.ks);

	return TEE_SUCCESS;
}

static TEE_Result update_se_info(void)
{
	sss_status_t status = kStatus_SSS_Success;

	status = se050_get_se_info(se050_session,
				   IS_ENABLED(CFG_CORE_SE05X_DISPLAY_INFO));

	/* the session must be closed after accessing the board information */
	sss_se05x_session_close(se050_session);
	se050_scp03_set_disable();

	if (status != kStatus_SSS_Success)
		return TEE_ERROR_GENERIC;

	if (IS_ENABLED(CFG_CORE_SCP03_ONLY))
		return TEE_SUCCESS;

	return se050_core_early_init(NULL);
}

static TEE_Result enable_scp03(void)
{
	if (se050_enable_scp03(se050_session) != kStatus_SSS_Success)
		return TEE_ERROR_GENERIC;

	return TEE_SUCCESS;
}

static TEE_Result se050_early_init_default(void)
{
	if (se050_core_early_init(NULL)) {
		EMSG("Failed to open the default session");
		panic();
	}

	if (update_se_info()) {
		EMSG("Failed to read the secure element configuration");
		panic();
	}

	if (IS_ENABLED(CFG_CORE_SE05X_SCP03_EARLY)) {
		if (enable_scp03()) {
			EMSG("Failed to open the SCP03 session");
			panic();
		}
	}

	return TEE_SUCCESS;
}

static TEE_Result se050_early_init_scp03(void)
{
	/* Initialize session */
	se050_session = (sss_se05x_session_t *)((void *)&se050_ctx.session);
	se050_kstore = (sss_se05x_key_store_t *)((void *)&se050_ctx.ks);

#ifdef CFG_CORE_SE05X_OEFID
	se050_ctx.se_info.oefid[0] = CFG_CORE_SE05X_OEFID >> 8;
	se050_ctx.se_info.oefid[1] = CFG_CORE_SE05X_OEFID & 0xff;
#endif
	if (enable_scp03()) {
		EMSG("Failed to enable SCP03 session");
		panic();
	}

	if (update_se_info()) {
		EMSG("Failed to read the secure element configuration");
		panic();
	}

	if (enable_scp03()) {
		EMSG("Failed to re-open the SCP03 session");
		panic();
	}

	return TEE_SUCCESS;
}

static TEE_Result se050_session_init(void)
{
	if (IS_ENABLED(CFG_CORE_SCP03_ONLY))
		return se050_early_init_scp03();

	return se050_early_init_default();
}

driver_init(se050_session_init);