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52 lines
1.2 KiB
52 lines
1.2 KiB
/* |
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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 <zephyr/drivers/hwinfo.h> |
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#include <string.h> |
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#include <fsl_sim.h> |
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#include <zephyr/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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