From c004857da06dd90be9a1ac34bd6efe2bc03fed6a Mon Sep 17 00:00:00 2001
From: Jamie Chen <jamie.chen@intel.com>
Date: Wed, 15 Jan 2020 11:17:21 +0800
Subject: [PATCH] soc/intel/cannonlake: Add chip config for SATA strength

Add config to chip.h for tuning SATA gen3 strength.

BUG=b:147351936
BRANCH=none
TEST=build successful in puff

Change-Id: I4dcd23834fa3c01c1d88697a7bb8cf361709b62e
Signed-off-by: Jamie Chen <jamie.chen@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38432
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
---
 src/soc/intel/cannonlake/chip.h               |  5 +++
 src/soc/intel/cannonlake/include/soc/sata.h   | 32 +++++++++++++++++++
 .../intel/cannonlake/romstage/fsp_params.c    | 22 +++++++++++++
 3 files changed, 59 insertions(+)
 create mode 100644 src/soc/intel/cannonlake/include/soc/sata.h

diff --git a/src/soc/intel/cannonlake/chip.h b/src/soc/intel/cannonlake/chip.h
index 07a67cd630..0712146544 100644
--- a/src/soc/intel/cannonlake/chip.h
+++ b/src/soc/intel/cannonlake/chip.h
@@ -29,6 +29,7 @@
 #include <soc/pci_devs.h>
 #include <soc/pm.h>
 #include <soc/pmc.h>
+#include <soc/sata.h>
 #include <soc/serialio.h>
 #include <soc/usb.h>
 #include <soc/vr_config.h>
@@ -39,6 +40,7 @@
 #endif
 
 #define SOC_INTEL_CML_UART_DEV_MAX 3
+#define SOC_INTEL_CML_SATA_DEV_MAX 8
 
 struct soc_intel_cannonlake_config {
 
@@ -390,6 +392,9 @@ struct soc_intel_cannonlake_config {
 	/* SATA Power Optimizer */
 	uint8_t satapwroptimize;
 
+	/* SATA Gen3 Strength */
+	struct sata_port_config sata_port[SOC_INTEL_CML_SATA_DEV_MAX];
+
 	/* Enable or disable eDP device */
 	uint8_t DdiPortEdp;
 
diff --git a/src/soc/intel/cannonlake/include/soc/sata.h b/src/soc/intel/cannonlake/include/soc/sata.h
new file mode 100644
index 0000000000..17802c3412
--- /dev/null
+++ b/src/soc/intel/cannonlake/include/soc/sata.h
@@ -0,0 +1,32 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2020 Intel Corporation.
+ *
+ * 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.
+ */
+
+
+#ifndef _SOC_SATA_H_
+#define _SOC_SATA_H_
+
+#include <stdint.h>
+
+/* SATA Gen3 strength */
+struct sata_port_config {
+	uint8_t RxGen3EqBoostMagEnable;
+	uint8_t RxGen3EqBoostMag;
+	uint8_t TxGen3DownscaleAmpEnable;
+	uint8_t TxGen3DownscaleAmp;
+	uint8_t TxGen3DeEmphEnable;
+	uint8_t TxGen3DeEmph;
+};
+
+#endif
diff --git a/src/soc/intel/cannonlake/romstage/fsp_params.c b/src/soc/intel/cannonlake/romstage/fsp_params.c
index 5c74d4a1e0..3c5be301b8 100644
--- a/src/soc/intel/cannonlake/romstage/fsp_params.c
+++ b/src/soc/intel/cannonlake/romstage/fsp_params.c
@@ -101,6 +101,28 @@ static void soc_memory_init_params(FSP_M_CONFIG *m_cfg, const config_t *config)
 	dev = pcidev_path_on_root(SA_DEVFN_IPU);
 	if (dev)
 		m_cfg->SaIpuEnable = dev->enabled;
+
+	/* SATA Gen3 strength */
+	for (i = 0; i < SOC_INTEL_CML_SATA_DEV_MAX; i++) {
+		if (config->sata_port[i].RxGen3EqBoostMagEnable) {
+			m_cfg->PchSataHsioRxGen3EqBoostMagEnable[i] =
+				config->sata_port[i].RxGen3EqBoostMagEnable;
+			m_cfg->PchSataHsioRxGen3EqBoostMag[i] =
+				config->sata_port[i].RxGen3EqBoostMag;
+		}
+		if (config->sata_port[i].TxGen3DownscaleAmpEnable) {
+			m_cfg->PchSataHsioTxGen3DownscaleAmpEnable[i] =
+				config->sata_port[i].TxGen3DownscaleAmpEnable;
+			m_cfg->PchSataHsioTxGen3DownscaleAmp[i] =
+				config->sata_port[i].TxGen3DownscaleAmp;
+		}
+		if (config->sata_port[i].TxGen3DeEmphEnable) {
+			m_cfg->PchSataHsioTxGen3DeEmphEnable[i] =
+				config->sata_port[i].TxGen3DeEmphEnable;
+			m_cfg->PchSataHsioTxGen3DeEmph[i] =
+				config->sata_port[i].TxGen3DeEmph;
+		}
+	}
 }
 
 void platform_fsp_memory_init_params_cb(FSPM_UPD *mupd, uint32_t version)