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@@ -1,6 +1,10 @@
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2011 Calxeda, Inc.
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+ * Copyright 2022-2023 Arm Limited and/or its affiliates <open-source-office@arm.com>
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+ *
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+ * Authors:
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+ * Abdellatif El Khlifi <abdellatif.elkhlifi@arm.com>
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*/
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#include <common.h>
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@@ -354,6 +358,50 @@ int uuid_str_to_bin(const char *uuid_str, unsigned char *uuid_bin,
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return 0;
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}
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+/**
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+ * uuid_str_to_le_bin() - Convert string UUID to little endian binary data.
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+ * @uuid_str: pointer to UUID string
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+ * @uuid_bin: pointer to allocated array for little endian output [16B]
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+ *
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+ * UUID string is 36 characters (36 bytes):
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+ *
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+ * xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
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+ *
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+ * where x is a hexadecimal character. Fields are separated by '-'s.
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+ * When converting to a little endian binary UUID, the string fields are reversed.
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+ *
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+ * Return:
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+ *
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+ * uuid_bin filled with little endian UUID data
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+ * On success 0 is returned. Otherwise, failure code.
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+ */
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+int uuid_str_to_le_bin(const char *uuid_str, unsigned char *uuid_bin)
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+{
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+ u16 tmp16;
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+ u32 tmp32;
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+ u64 tmp64;
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+
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+ if (!uuid_str_valid(uuid_str) || !uuid_bin)
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+ return -EINVAL;
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+
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+ tmp32 = cpu_to_le32(hextoul(uuid_str, NULL));
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+ memcpy(uuid_bin, &tmp32, 4);
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+
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+ tmp16 = cpu_to_le16(hextoul(uuid_str + 9, NULL));
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+ memcpy(uuid_bin + 4, &tmp16, 2);
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+
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+ tmp16 = cpu_to_le16(hextoul(uuid_str + 14, NULL));
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+ memcpy(uuid_bin + 6, &tmp16, 2);
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+
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+ tmp16 = cpu_to_le16(hextoul(uuid_str + 19, NULL));
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+ memcpy(uuid_bin + 8, &tmp16, 2);
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+
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+ tmp64 = cpu_to_le64(simple_strtoull(uuid_str + 24, NULL, 16));
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+ memcpy(uuid_bin + 10, &tmp64, 6);
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+
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+ return 0;
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+}
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+
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/*
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* uuid_bin_to_str() - convert big endian binary data to string UUID or GUID.
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*
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