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"Das U-Boot" Source Tree
1/* SPDX-License-Identifier: GPL-2.0+ */
2/*
3 * Copyright (c) 2015 Google, Inc
4 */
5
6#ifndef __ASM_ARCH_MICROCODE_H
7#define __ASM_ARCH_MICROCODE_H
8
9#ifndef __ASSEMBLY__
10
11/* This is a declaration for ucode_base in start.S */
12extern u32 ucode_base;
13extern u32 ucode_size;
14
15/**
16 * microcode_update_intel() - Apply microcode updates
17 *
18 * Applies any microcode updates in the device tree.
19 *
20 * Return: 0 if OK, -EEXIST if the updates were already applied, -ENOENT if
21 * not updates were found, -EINVAL if an update was invalid
22 */
23int microcode_update_intel(void);
24
25/**
26 * microcode_read_rev() - Read the microcode version
27 *
28 * This reads the microcode version of the currently running CPU
29 *
30 * Return: microcode version number
31 */
32int microcode_read_rev(void);
33#endif /* __ASSEMBLY__ */
34
35#endif