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-rw-r--r--arch/x86/include/asm/fsp/fsp_types.h62
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diff --git a/arch/x86/include/asm/fsp/fsp_types.h b/arch/x86/include/asm/fsp/fsp_types.h
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+/* SPDX-License-Identifier: Intel */
+/*
+ * Copyright (C) 2013, Intel Corporation
+ * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
+ */
+
+#ifndef __FSP_TYPES_H__
+#define __FSP_TYPES_H__
+
+/**
+ * Returns a 16-bit signature built from 2 ASCII characters.
+ *
+ * This macro returns a 16-bit value built from the two ASCII characters
+ * specified by A and B.
+ *
+ * @A: The first ASCII character.
+ * @B: The second ASCII character.
+ *
+ * @return: A 16-bit value built from the two ASCII characters specified by
+ * A and B.
+ */
+#define SIGNATURE_16(A, B) ((A) | (B << 8))
+
+/**
+ * Returns a 32-bit signature built from 4 ASCII characters.
+ *
+ * This macro returns a 32-bit value built from the four ASCII characters
+ * specified by A, B, C, and D.
+ *
+ * @A: The first ASCII character.
+ * @B: The second ASCII character.
+ * @C: The third ASCII character.
+ * @D: The fourth ASCII character.
+ *
+ * @return: A 32-bit value built from the two ASCII characters specified by
+ * A, B, C and D.
+ */
+#define SIGNATURE_32(A, B, C, D) \
+ (SIGNATURE_16(A, B) | (SIGNATURE_16(C, D) << 16))
+
+/**
+ * Returns a 64-bit signature built from 8 ASCII characters.
+ *
+ * This macro returns a 64-bit value built from the eight ASCII characters
+ * specified by A, B, C, D, E, F, G,and H.
+ *
+ * @A: The first ASCII character.
+ * @B: The second ASCII character.
+ * @C: The third ASCII character.
+ * @D: The fourth ASCII character.
+ * @E: The fifth ASCII character.
+ * @F: The sixth ASCII character.
+ * @G: The seventh ASCII character.
+ * @H: The eighth ASCII character.
+ *
+ * @return: A 64-bit value built from the two ASCII characters specified by
+ * A, B, C, D, E, F, G and H.
+ */
+#define SIGNATURE_64(A, B, C, D, E, F, G, H) \
+ (SIGNATURE_32(A, B, C, D) | ((u64)(SIGNATURE_32(E, F, G, H)) << 32))
+
+#endif