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7d111d99c6
NOTE: Breaking change to the way UUIDs are stored in the DT Currently, UUIDs are stored in the device tree as sequences of 4 integers. There is a mismatch in endianness between the way UUIDs are represented in memory and the way they are parsed from the device tree. As a result, we must either store the UUIDs in little-endian format in the DT (which means that they do not match up with their string representations) or perform endianness conversion after parsing them. Currently, TF-A chooses the second option, with unwieldy endianness-conversion taking place after reading a UUID. To fix this problem, and to make it convenient to copy and paste UUIDs from other tools, change to store UUIDs in string format, using a new wrapper function to parse them from the device tree. Change-Id: I38bd63c907be14e412f03ef0aab9dcabfba0eaa0 Signed-off-by: David Horstmann <david.horstmann@arm.com>
74 lines
2.3 KiB
C
74 lines
2.3 KiB
C
/*-
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* Copyright (c) 2002 Marcel Moolenaar
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* Portions copyright (c) 2014-2020, ARM Limited and Contributors.
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* All rights reserved.
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*/
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#ifndef UUID_H
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#define UUID_H
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/* Length of a node address (an IEEE 802 address). */
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#define _UUID_NODE_LEN 6
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/* Length of UUID string including dashes. */
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#define _UUID_STR_LEN 36
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/*
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* See also:
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* http://www.opengroup.org/dce/info/draft-leach-uuids-guids-01.txt
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* http://www.opengroup.org/onlinepubs/009629399/apdxa.htm
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*
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* A DCE 1.1 compatible source representation of UUIDs.
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*/
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struct uuid {
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uint8_t time_low[4];
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uint8_t time_mid[2];
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uint8_t time_hi_and_version[2];
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uint8_t clock_seq_hi_and_reserved;
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uint8_t clock_seq_low;
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uint8_t node[_UUID_NODE_LEN];
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};
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struct efi_guid {
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uint32_t time_low;
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uint16_t time_mid;
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uint16_t time_hi_and_version;
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uint8_t clock_seq_and_node[8];
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};
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union uuid_helper_t {
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struct uuid uuid_struct;
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struct efi_guid efi_guid;
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};
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/* XXX namespace pollution? */
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typedef struct uuid uuid_t;
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#endif /* UUID_H */
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