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e77b62e290
Each CPU needs to have its microcode loaded. Add support for this so that all CPUs will have the same version. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
36 lines
769 B
C
36 lines
769 B
C
/*
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* Copyright (c) 2015 Google, Inc
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef __ASM_ARCH_MICROCODE_H
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#define __ASM_ARCH_MICROCODE_H
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#ifndef __ASSEMBLY__
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/* This is a declaration for ucode_base in start.S */
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extern u32 ucode_base;
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/**
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* microcode_update_intel() - Apply microcode updates
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*
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* Applies any microcode updates in the device tree.
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*
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* @return 0 if OK, -EEXIST if the updates were already applied, -ENOENT if
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* not updates were found, -EINVAL if an update was invalid
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*/
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int microcode_update_intel(void);
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/**
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* microcode_read_rev() - Read the microcode version
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*
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* This reads the microcode version of the currently running CPU
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*
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* @return microcode version number
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*/
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int microcode_read_rev(void);
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#endif /* __ASSEMBLY__ */
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#endif
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