soc/nordic/common/soc_secure.h

/*
 * Copyright (c) 2019 Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: Apache-2.0
 */
#include <stdint.h>
#include <nrf.h>
#include <hal/nrf_gpio.h>
#include <hal/nrf_ficr.h>

#if defined(CONFIG_TRUSTED_EXECUTION_NONSECURE)
#if NRF_GPIO_HAS_SEL
void soc_secure_gpio_pin_mcu_select(uint32_t pin_number, nrf_gpio_pin_sel_t mcu);
#endif

int soc_secure_mem_read(void *dst, void *src, size_t len);

#else /* defined(CONFIG_TRUSTED_EXECUTION_NONSECURE) */
#if NRF_GPIO_HAS_SEL
static inline void soc_secure_gpio_pin_mcu_select(uint32_t pin_number, nrf_gpio_pin_sel_t mcu)
{
	nrf_gpio_pin_control_select(pin_number, mcu);
}
#endif /* NRF_GPIO_HAS_SEL */

static inline int soc_secure_mem_read(void *dst, void *src, size_t len)
{
	(void)memcpy(dst, src, len);
	return 0;
}

#endif /* defined CONFIG_TRUSTED_EXECUTION_NONSECURE */

/* Include these soc_secure_* functions only when the FICR is mapped as secure only */
#if defined(NRF_FICR_S)
#if defined(CONFIG_TRUSTED_EXECUTION_NONSECURE)
#if defined(CONFIG_SOC_HFXO_CAP_INTERNAL) || \
	DT_ENUM_HAS_VALUE(DT_NODELABEL(hfxo), load_capacitors, internal)
static inline uint32_t soc_secure_read_xosc32mtrim(void)
{
	uint32_t xosc32mtrim;
	int err;

	err = soc_secure_mem_read(&xosc32mtrim,
				  (void *)&NRF_FICR_S->XOSC32MTRIM,
				  sizeof(xosc32mtrim));
	__ASSERT(err == 0, "Secure read error (%d)", err);

	return xosc32mtrim;
}
#endif /* defined(CONFIG_SOC_HFXO_CAP_INTERNAL) */

static inline void soc_secure_read_deviceid(uint32_t deviceid[2])
{
	int err;

	err = soc_secure_mem_read(deviceid,
				 (void *)&NRF_FICR_S->INFO.DEVICEID,
				 2 * sizeof(uint32_t));
	__ASSERT(err == 0, "Secure read error (%d)", err);
}

#else /* defined(CONFIG_TRUSTED_EXECUTION_NONSECURE) */
#if defined(CONFIG_SOC_HFXO_CAP_INTERNAL) || \
	DT_ENUM_HAS_VALUE(DT_NODELABEL(hfxo), load_capacitors, internal)
static inline uint32_t soc_secure_read_xosc32mtrim(void)
{
	return NRF_FICR_S->XOSC32MTRIM;
}
#endif /* defined(CONFIG_SOC_HFXO_CAP_INTERNAL) */

static inline void soc_secure_read_deviceid(uint32_t deviceid[2])
{
	deviceid[0] = nrf_ficr_deviceid_get(NRF_FICR_S, 0);
	deviceid[1] = nrf_ficr_deviceid_get(NRF_FICR_S, 1);
}

#endif /* defined CONFIG_TRUSTED_EXECUTION_NONSECURE */
#endif /* defined(NRF_FICR_S) */