53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
/*
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* Copyright (c) 2019 Alexander Wachter
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <drivers/hwinfo.h>
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#include <string.h>
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#include <fsl_sim.h>
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#include <sys/byteorder.h>
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#if defined(SIM_UIDH)
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#define HWINFO_DEVICE_ID_LENGTH_H 1
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#else
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#define HWINFO_DEVICE_ID_LENGTH_H 0
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#endif
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#if (defined(FSL_FEATURE_SIM_HAS_UIDM) && FSL_FEATURE_SIM_HAS_UIDM)
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#define HWINFO_DEVICE_ID_LENGTH_M 1
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#else
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#define HWINFO_DEVICE_ID_LENGTH_M 2
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#endif
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#define HWINFO_DEVICE_ID_LENGTH_L 1
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#define HWINFO_DEVICE_ID_LENGTH_TOTAL (HWINFO_DEVICE_ID_LENGTH_L + \
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HWINFO_DEVICE_ID_LENGTH_M + \
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HWINFO_DEVICE_ID_LENGTH_H)
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ssize_t z_impl_hwinfo_get_device_id(uint8_t *buffer, size_t length)
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{
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uint32_t id[HWINFO_DEVICE_ID_LENGTH_TOTAL];
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uint32_t *idp = id;
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#if defined(SIM_UIDH)
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*idp++ = sys_cpu_to_be32(SIM->UIDH);
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#endif /* SIM_UIDH */
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#if (defined(FSL_FEATURE_SIM_HAS_UIDM) && FSL_FEATURE_SIM_HAS_UIDM)
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*idp++ = sys_cpu_to_be32(SIM->UIDM);
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#else
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*idp++ = sys_cpu_to_be32(SIM->UIDMH);
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*idp++ = sys_cpu_to_be32(SIM->UIDML);
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#endif /* defined(FSL_FEATURE_SIM_HAS_UIDM) && FSL_FEATURE_SIM_HAS_UIDM */
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*idp++ = sys_cpu_to_be32(SIM->UIDL);
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if (length > sizeof(id)) {
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length = sizeof(id);
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}
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memcpy(buffer, id, length);
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return length;
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}
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