Linux_SDK_V0.9.5

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