| /* 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 |
