x86: Move common CPU code to its own place

Some of the Intel CPU code is common to several Intel CPUs. Move it into a
common location along with required declarations.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

1 files changed, 35 insertions, 0 deletions

diff --git a/arch/x86/include/asm/cpu_common.h b/arch/x86/include/asm/cpu_common.h
new file mode 100644
index 0000000..562de3e
--- /dev/null
+++ b/arch/x86/include/asm/cpu_common.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2016 Google, Inc
+ *
+ * SPDX-License-Identifier:	GPL-2.0
+ */
+
+#ifndef __ASM_CPU_COMMON_H
+#define __ASM_CPU_COMMON_H
+
+#define IA32_PERF_CTL			0x199
+
+/**
+ * cpu_common_init() - Set up common CPU init
+ *
+ * This reports BIST failure, enables the LAPIC, updates microcode, enables
+ * the upper 128-bytes of CROM RAM, probes the northbridge, PCH, LPC and SATA.
+ *
+ * @return 0 if OK, -ve on error
+ */
+int cpu_common_init(void);
+
+/**
+ * cpu_set_flex_ratio_to_tdp_nominal() - Set up the maximum non-turbo rate
+ *
+ * If a change is needed, this function will do a soft reset so it takes
+ * effect.
+ *
+ * Some details are available here:
+ * http://forum.hwbot.org/showthread.php?t=76092
+ *
+ * @return 0 if OK, -ve on error
+ */
+int cpu_set_flex_ratio_to_tdp_nominal(void);
+
+#endif