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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (c) 2015 Google, Inc
*/
#ifndef __ASM_ARCH_MICROCODE_H
#define __ASM_ARCH_MICROCODE_H
#ifndef __ASSEMBLY__
/* This is a declaration for ucode_base in start.S */
extern u32 ucode_base;
extern u32 ucode_size;
/**
* microcode_update_intel() - Apply microcode updates
*
* Applies any microcode updates in the device tree.
*
* @return 0 if OK, -EEXIST if the updates were already applied, -ENOENT if
* not updates were found, -EINVAL if an update was invalid
*/
int microcode_update_intel(void);
/**
* microcode_read_rev() - Read the microcode version
*
* This reads the microcode version of the currently running CPU
*
* @return microcode version number
*/
int microcode_read_rev(void);
#endif /* __ASSEMBLY__ */
#endif
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