1 files changed, 107 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/vr_config.c b/src/soc/intel/skylake/vr_config.c
new file mode 100644
index 0000000000..40223e32cd
--- /dev/null
+++ b/src/soc/intel/skylake/vr_config.c
@@ -0,0 +1,107 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2015 Google Inc.
+ *
+ * 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.
+ *
+ */
+
+#include <soc/vr_config.h>
+
+/* Default values for domain configuration. PSI3 and PSI4 are disabled. */
+static const struct vr_config default_configs[NUM_VR_DOMAINS] = {
+	[VR_SYSTEM_AGENT] = {
+		.vr_config_enable = 1,
+		.psi1threshold = VR_CFG_AMP(20),
+		.psi2threshold = VR_CFG_AMP(4),
+		.psi3threshold = VR_CFG_AMP(1),
+		.psi3enable = 0,
+		.psi4enable = 0,
+		.imon_slope = 0x0,
+		.imon_offset = 0x0,
+		.icc_max = VR_CFG_AMP(7),
+		.voltage_limit = 1520,
+	},
+	[VR_IA_CORE] = {
+		.vr_config_enable = 1,
+		.psi1threshold = VR_CFG_AMP(20),
+		.psi2threshold = VR_CFG_AMP(5),
+		.psi3threshold = VR_CFG_AMP(1),
+		.psi3enable = 0,
+		.psi4enable = 0,
+		.imon_slope = 0x0,
+		.imon_offset = 0x0,
+		.icc_max = VR_CFG_AMP(34),
+		.voltage_limit = 1520,
+	},
+	[VR_RING] = {
+		.vr_config_enable = 1,
+		.psi1threshold = VR_CFG_AMP(20),
+		.psi2threshold = VR_CFG_AMP(5),
+		.psi3threshold = VR_CFG_AMP(1),
+		.psi3enable = 0,
+		.psi4enable = 0,
+		.imon_slope = 0x0,
+		.imon_offset = 0x0,
+		.icc_max = VR_CFG_AMP(34),
+		.voltage_limit = 1520,
+	},
+	[VR_GT_UNSLICED] = {
+		.vr_config_enable = 1,
+		.psi1threshold = VR_CFG_AMP(20),
+		.psi2threshold = VR_CFG_AMP(5),
+		.psi3threshold = VR_CFG_AMP(1),
+		.psi3enable = 0,
+		.psi4enable = 0,
+		.imon_slope = 0x0,
+		.imon_offset = 0x0,
+		.icc_max = VR_CFG_AMP(35),
+		.voltage_limit = 1520,
+	},
+	[VR_GT_SLICED] = {
+		.vr_config_enable = 1,
+		.psi1threshold = VR_CFG_AMP(20),
+		.psi2threshold = VR_CFG_AMP(5),
+		.psi3threshold = VR_CFG_AMP(1),
+		.psi3enable = 0,
+		.psi4enable = 0,
+		.imon_slope = 0x0,
+		.imon_offset = 0x0,
+		.icc_max = VR_CFG_AMP(35),
+		.voltage_limit = 1520,
+	},
+};
+
+void fill_vr_domain_config(SILICON_INIT_UPD *params, int domain,
+				const struct vr_config *chip_cfg)
+{
+	const struct vr_config *cfg;
+
+	if (domain < 0 || domain >= NUM_VR_DOMAINS)
+		return;
+
+	/* Use device tree override if requested. */
+	if (chip_cfg->vr_config_enable)
+		cfg = chip_cfg;
+	else
+		cfg = &default_configs[domain];
+
+	params->VrConfigEnable[domain] = cfg->vr_config_enable;
+	params->Psi1Threshold[domain] = cfg->psi1threshold;
+	params->Psi2Threshold[domain] = cfg->psi2threshold;
+	params->Psi3Threshold[domain] = cfg->psi3threshold;
+	params->Psi3Enable[domain] = cfg->psi3enable;
+	params->Psi4Enable[domain] = cfg->psi4enable;
+	params->ImonSlope[domain] = cfg->imon_slope;
+	params->ImonOffset[domain] = cfg->imon_offset;
+	params->IccMax[domain] = cfg->icc_max;
+	params->VrVoltageLimit[domain] = cfg->voltage_limit;
+}