fsp_model_406dx: use external microcode .h files for rangeley

The microcode for the Rangeley chip is supplied as .h files in the
Rangeley FSP POSTGOLD4 package.

When the rangeley microcode gets put into the blobs directory, this
can be reverted and the binary file put into the makefile.

Change-Id: I30e7436f26a247bc9431f249becfa5fe8c581be7
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/12335
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/cpu/intel/fsp_model_406dx/Kconfig

@@ -33,6 +33,9 @@ config CPU_SPECIFIC_OPTIONS
 	select TSC_SYNC_MFENCE
 	select LAPIC_MONOTONIC_TIMER
 
+	# Microcode header files are delivered in FSP package
+	select USES_MICROCODE_HEADER_FILES if HAVE_FSP_BIN
+
 choice
 	prompt "Rangeley CPU Stepping"
 	default FSP_MODEL_406DX_B0
@@ -53,16 +56,9 @@ config ENABLE_VMX
 	bool "Enable VMX for virtualization"
 	default n
 
-config HAVE_CPU_MICROCODE_FILE
-	bool "Add microcode file"
-	help
-	  The microcode binary
-
-config CPU_MICROCODE_FILE
-	  string "Path and filename of CPU microcode"
-	  default "microcode.bin"
-	  depends on HAVE_CPU_MICROCODE_FILE
-	  help
-	    The path and filename of the file containing the CPU microcode.
+#set up microcode for rangeley POSTGOLD4 release
+config CPU_MICROCODE_HEADER_FILES
+	string
+	default "../intel/cpu/rangeley/microcode/microcode-m01406d000e.h ../intel/cpu/rangeley/microcode/microcode-m01406d8128.h"
 
 endif #CPU_INTEL_FSP_MODEL_406DX

src/cpu/intel/fsp_model_406dx/Makefile.inc

@@ -23,6 +23,3 @@ cpu_microcode_bins += $(call strip_quotes,$(CONFIG_CPU_MICROCODE_FILE))
 endif
 
 CPPFLAGS_romstage += -I$(src)/cpu/intel/fsp_model_406dx
-# We don't have microcode for this CPU
-# Use CONFIG_CPU_MICROCODE_CBFS_EXTERNAL with a binary microcode file
-# cpu_microcode_bins += ???

src/cpu/intel/fsp_model_406dx/model_406dx_init.c

@@ -170,7 +170,8 @@ static void model_406dx_init(struct device *cpu)
 	x86_enable_cache();
 
 	/* Load microcode */
-	intel_update_microcode_from_cbfs();
+	if (IS_ENABLED(CONFIG_SUPPORT_CPU_UCODE_IN_CBFS))
+		intel_update_microcode_from_cbfs();
 
 	/* Clear out pending MCEs */
 	configure_mca();