drivers/hwinfo/hwinfo_mspm0.c

/*
 * Copyright (c) 2025 Linumiz GmbH
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <zephyr/device.h>
#include <zephyr/drivers/hwinfo.h>
#include <ti/driverlib/driverlib.h>
#include <string.h>

static uint32_t reset_cause;
ssize_t z_impl_hwinfo_get_device_id(uint8_t *buffer, size_t length)
{
	struct mspm0_device_id {
		uint16_t manufacturer;
		uint16_t partnum;
		uint8_t version;
		uint32_t traceid;
		uint16_t user_partnum;
		uint8_t user_var;
	};

	struct mspm0_device_id info = {0};

	info.manufacturer = DL_FactoryRegion_getManufacturerCode();
	info.partnum = DL_FactoryRegion_getPartNumber();
	info.version = DL_FactoryRegion_getVersion();
	info.traceid = DL_FactoryRegion_getTraceID();
	info.user_partnum = DL_FactoryRegion_getUserIDPart();
	info.user_var = DL_FactoryRegion_getUserIDVariant();

	if (length > sizeof(info)) {
		length = sizeof(info);
	}
	memcpy(buffer, &info, length);

	return length;
}

int z_impl_hwinfo_get_reset_cause(uint32_t *cause)
{
	uint32_t reason;

	if (reset_cause != 0) {
		*cause = reset_cause;
		return 0;
	}

	reason = DL_SYSCTL_getResetCause();
	switch (reason) {
	case DL_SYSCTL_RESET_CAUSE_POR_HW_FAILURE:
		*cause = RESET_POR;
		break;
	case DL_SYSCTL_RESET_CAUSE_POR_EXTERNAL_NRST:
		__fallthrough;
	case DL_SYSCTL_RESET_CAUSE_BOOTRST_EXTERNAL_NRST:
		*cause = RESET_PIN;
		break;
	case DL_SYSCTL_RESET_CAUSE_POR_SW_TRIGGERED:
		__fallthrough;
	case DL_SYSCTL_RESET_CAUSE_BOOTRST_SW_TRIGGERED:
		__fallthrough;
	case DL_SYSCTL_RESET_CAUSE_SYSRST_SW_TRIGGERED:
		__fallthrough;
	case DL_SYSCTL_RESET_CAUSE_CPURST_SW_TRIGGERED:
		*cause = RESET_SOFTWARE;
		break;
	case DL_SYSCTL_RESET_CAUSE_BOR_SUPPLY_FAILURE:
		*cause = RESET_BROWNOUT;
		break;
	case DL_SYSCTL_RESET_CAUSE_BOR_WAKE_FROM_SHUTDOWN:
		*cause = RESET_LOW_POWER_WAKE;
		break;
	case DL_SYSCTL_RESET_CAUSE_BOOTRST_NON_PMU_PARITY_FAULT:
		*cause = RESET_PARITY;
		break;
	case DL_SYSCTL_RESET_CAUSE_BOOTRST_CLOCK_FAULT:
		*cause = RESET_CLOCK;
		break;
	case DL_SYSCTL_RESET_CAUSE_SYSRST_BSL_EXIT:
		__fallthrough;
	case DL_SYSCTL_RESET_CAUSE_SYSRST_BSL_ENTRY:
		*cause = RESET_BOOTLOADER;
		break;
	case DL_SYSCTL_RESET_CAUSE_SYSRST_WWDT0_VIOLATION:
		__fallthrough;
	case DL_SYSCTL_RESET_CAUSE_SYSRST_WWDT1_VIOLATION:
		*cause = RESET_WATCHDOG;
		break;
	case DL_SYSCTL_RESET_CAUSE_SYSRST_FLASH_ECC_ERROR:
		*cause = RESET_FLASH;
		break;
	case DL_SYSCTL_RESET_CAUSE_SYSRST_CPU_LOCKUP_VIOLATION:
		*cause = RESET_CPU_LOCKUP;
		break;
	case DL_SYSCTL_RESET_CAUSE_SYSRST_DEBUG_TRIGGERED:
		__fallthrough;
	case DL_SYSCTL_RESET_CAUSE_CPURST_DEBUG_TRIGGERED:
		*cause = RESET_DEBUG;
		break;
	default:
		break;
	}

	reset_cause = *cause;

	return 0;
}

int z_impl_hwinfo_clear_reset_cause(void)
{
	reset_cause = 0;

	return 0;
}

int z_impl_hwinfo_get_supported_reset_cause(uint32_t *supported)
{
	*supported = RESET_POR
		   | RESET_PIN
		   | RESET_SOFTWARE
		   | RESET_BROWNOUT
		   | RESET_LOW_POWER_WAKE
		   | RESET_PARITY
		   | RESET_CLOCK
		   | RESET_BOOTLOADER
		   | RESET_WATCHDOG
		   | RESET_FLASH
		   | RESET_CPU_LOCKUP
		   | RESET_DEBUG;

	return 0;
}