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https://github.com/ARM-software/arm-trusted-firmware.git
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a1cedadf73
Added support for HW computed CRC using Arm ACLE intrinsics. These are built-in intrinsics available for ARMv8.1-A, and onwards. These intrinsics are enabled via '-march=armv8-a+crc' compile switch for ARMv8-A (supports CRC instructions optionally). HW CRC support is enabled unconditionally in BL2 for all Arm platforms. HW CRC calculation is verified offline to ensure a similar result as its respective ZLib utility function. HW CRC calculation support will be used in the upcoming firmware update patches. Change-Id: Ia2ae801f62d2003e89a9c3e6d77469b5312614b3 Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
24 lines
624 B
C
24 lines
624 B
C
/*
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* Copyright (c) 2021 ARM Limited
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* The definitions below are a subset of what we would normally get by using
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* the compiler's version of arm_acle.h. We can't use that directly because
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* we specify -nostdinc in the Makefiles.
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*
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* We just define the functions we need so far.
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*/
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#ifndef ARM_ACLE_H
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#define ARM_ACLE_H
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#if !defined(__aarch64__) || defined(__clang__)
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# define __crc32b __builtin_arm_crc32b
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# define __crc32w __builtin_arm_crc32w
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#else
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# define __crc32b __builtin_aarch64_crc32b
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# define __crc32w __builtin_aarch64_crc32w
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#endif
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#endif /* ARM_ACLE_H */
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