Add the Intel FSP 206ax CPU core support

Add support for 206ax using the Intel FSP.
The FSP is different enough to warrant its own source files
for now. It has different CAR code, micorcode, and FSP inclusion.
It may be possible to combine this code with the mrc based
solution used by the chromebooks in the future.

Change-Id: I5105631af34e9c3a804ace908c4205f073abb9b4
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-on: http://review.coreboot.org/4016
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

1 files changed, 72 insertions, 0 deletions

diff --git a/src/cpu/intel/fsp_model_206ax/finalize.c b/src/cpu/intel/fsp_model_206ax/finalize.c
new file mode 100644
index 0000000000..4ed5d1e5f8
--- /dev/null
+++ b/src/cpu/intel/fsp_model_206ax/finalize.c
@@ -0,0 +1,72 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 The Chromium OS Authors. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; version 2 of
+ * the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <cpu/cpu.h>
+#include <cpu/x86/msr.h>
+#include "model_206ax.h"
+
+static void msr_set_bit(unsigned reg, unsigned bit)
+{
+	msr_t msr = rdmsr(reg);
+
+	if (bit < 32) {
+		if (msr.lo & (1 << bit))
+			return;
+		msr.lo |= 1 << bit;
+	} else {
+		if (msr.hi & (1 << (bit - 32)))
+			return;
+		msr.hi |= 1 << (bit - 32);
+	}
+
+	wrmsr(reg, msr);
+}
+
+void intel_model_206ax_finalize_smm(void)
+{
+	msr_set_bit(MSR_PMG_CST_CONFIG_CONTROL, 15);
+
+	/* Lock AES-NI only if supported */
+	if (cpuid_ecx(1) & (1 << 25))
+		msr_set_bit(MSR_FEATURE_CONFIG, 0);
+
+#ifdef LOCK_POWER_CONTROL_REGISTERS
+	/*
+	 * Lock the power control registers.
+	 *
+	 * These registers can be left unlocked if modifying power
+	 * limits from the OS is desirable. Modifying power limits
+	 * from the OS can be especially useful for experimentation
+	 * during  early phases of system bringup while the thermal
+	 * power envelope is being proven.
+	 */
+
+	msr_set_bit(MSR_PP0_CURRENT_CONFIG, 31);
+	msr_set_bit(MSR_PP1_CURRENT_CONFIG, 31);
+	msr_set_bit(MSR_PKG_POWER_LIMIT, 63);
+	msr_set_bit(MSR_PP0_POWER_LIMIT, 31);
+	msr_set_bit(MSR_PP1_POWER_LIMIT, 31);
+#endif
+
+	msr_set_bit(MSR_MISC_PWR_MGMT, 22);
+	msr_set_bit(MSR_LT_LOCK_MEMORY, 0);
+}