core/drivers/crypto/caam/hal/common/hal_ctrl.c

// SPDX-License-Identifier: BSD-2-Clause
/*
 * Copyright 2018-2019 NXP
 *
 * Brief   CAAM Controller Hardware Abstration Layer.
 *         Implementation of primitives to access HW.
 */
#include <caam_hal_ctrl.h>
#include <caam_io.h>
#include <registers/ctrl_regs.h>
#include <registers/version_regs.h>

uint8_t caam_hal_ctrl_jrnum(vaddr_t baseaddr)
{
	uint32_t val = 0;

	val = io_caam_read32(baseaddr + CHANUM_MS);

	return GET_CHANUM_MS_JRNUM(val);
}

uint8_t caam_hal_ctrl_hash_limit(vaddr_t baseaddr)
{
	uint32_t val = 0;

	/* Read the number of instance */
	val = io_caam_read32(baseaddr + CHANUM_LS);

	if (GET_CHANUM_LS_MDNUM(val)) {
		/* Hashing is supported */
		val = io_caam_read32(baseaddr + CHAVID_LS);
		val &= BM_CHAVID_LS_MDVID;
		if (val == CHAVID_LS_MDVID_LP256)
			return TEE_MAIN_ALGO_SHA256;

		return TEE_MAIN_ALGO_SHA512;
	}

	return UINT8_MAX;
}