19e66506dSSimon Glass /* 29e66506dSSimon Glass * Copyright (c) 2015 Google, Inc 39e66506dSSimon Glass * 49e66506dSSimon Glass * SPDX-License-Identifier: GPL-2.0+ 59e66506dSSimon Glass */ 69e66506dSSimon Glass 79e66506dSSimon Glass #ifndef __ASM_ARCH_MICROCODE_H 89e66506dSSimon Glass #define __ASM_ARCH_MICROCODE_H 99e66506dSSimon Glass 109e66506dSSimon Glass #ifndef __ASSEMBLY__ 119e66506dSSimon Glass 12*e77b62e2SSimon Glass /* This is a declaration for ucode_base in start.S */ 13*e77b62e2SSimon Glass extern u32 ucode_base; 14*e77b62e2SSimon Glass 159e66506dSSimon Glass /** 169e66506dSSimon Glass * microcode_update_intel() - Apply microcode updates 179e66506dSSimon Glass * 189e66506dSSimon Glass * Applies any microcode updates in the device tree. 199e66506dSSimon Glass * 209e66506dSSimon Glass * @return 0 if OK, -EEXIST if the updates were already applied, -ENOENT if 219e66506dSSimon Glass * not updates were found, -EINVAL if an update was invalid 229e66506dSSimon Glass */ 239e66506dSSimon Glass int microcode_update_intel(void); 246bcb675bSSimon Glass 256bcb675bSSimon Glass /** 266bcb675bSSimon Glass * microcode_read_rev() - Read the microcode version 276bcb675bSSimon Glass * 286bcb675bSSimon Glass * This reads the microcode version of the currently running CPU 296bcb675bSSimon Glass * 306bcb675bSSimon Glass * @return microcode version number 316bcb675bSSimon Glass */ 326bcb675bSSimon Glass int microcode_read_rev(void); 339e66506dSSimon Glass #endif /* __ASSEMBLY__ */ 349e66506dSSimon Glass 359e66506dSSimon Glass #endif 36