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author | Iru Cai <mytbk920423@gmail.com> | 2019-10-30 14:21:52 +0800 |
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committer | Iru Cai <mytbk920423@gmail.com> | 2019-10-30 14:48:38 +0800 |
commit | ae51f41d14f548d494ac41e0d21137c5a4c3f59c (patch) | |
tree | 6ddb9d1aaa7bd5bad5bbf8497edc2e08ff208d79 /arch/x86/include/asm/microcode.h | |
download | uext4-ae51f41d14f548d494ac41e0d21137c5a4c3f59c.tar.xz |
import the U-Boot code and make it compile
Diffstat (limited to 'arch/x86/include/asm/microcode.h')
-rw-r--r-- | arch/x86/include/asm/microcode.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/arch/x86/include/asm/microcode.h b/arch/x86/include/asm/microcode.h new file mode 100644 index 0000000..4ab7504 --- /dev/null +++ b/arch/x86/include/asm/microcode.h @@ -0,0 +1,35 @@ +/* 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 |