blob: ea748482f76d720faced4028be5d3eee92303b0e [file] [log] [blame]
/*
* Copyright (c) 2019 Alexander Wachter
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <soc.h>
#include <zephyr/drivers/hwinfo.h>
#include <string.h>
#include <zephyr/sys/byteorder.h>
struct imxrt_uid {
uint32_t id[2];
};
ssize_t z_impl_hwinfo_get_device_id(uint8_t *buffer, size_t length)
{
struct imxrt_uid dev_id;
#ifdef CONFIG_SOC_SERIES_IMXRT11XX
dev_id.id[0] = sys_cpu_to_be32(OCOTP->FUSEN[17].FUSE);
dev_id.id[1] = sys_cpu_to_be32(OCOTP->FUSEN[16].FUSE);
#else
dev_id.id[0] = sys_cpu_to_be32(OCOTP->CFG2);
dev_id.id[1] = sys_cpu_to_be32(OCOTP->CFG1);
#endif
if (length > sizeof(dev_id.id)) {
length = sizeof(dev_id.id);
}
memcpy(buffer, dev_id.id, length);
return length;
}