soc/intel/tigerlake: Do initial SoC commit till ramstage

Clone entirely from Icelake

List of changes on top off initial icelake clone
1. Replace "Icelake" with "Tigerlake"
2. Replace "icl" with "tgl"
3. Replace "icp" with "tgp"
4. Rename structure based on Icelake with Tigerlake
5. Remove and clean below files
   5.a Clean up upd override in fsp_params.c,
	will be added once FSP available.
   5.b Remove __weak functions from fsp_params.c
   5.c Remove dGPU over PCIE enable Kconfig option
6. Add CPU/PCH/SA EDS document number and chapter number
7. Remove unnecessary headers from .c files based on review

Tiger Lake specific changes will follow in subsequent patches.
1. Include GPIO controller delta over ICL
2. FSP-S related UPD overrides as applicable

Change-Id: Id95e2fa9b7a7c6b3b9233d2c438b25a6c4904bbb
Signed-off-by: Ravi Sarawadi <ravishankar.sarawadi@intel.com>
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36087
Reviewed-by: Maulik V Vaghela <maulik.v.vaghela@intel.com>
Reviewed-by: Ronak Kanabar <ronak.kanabar@intel.com>
Reviewed-by: Rizwan Qureshi <rizwan.qureshi@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 62 insertions, 0 deletions

diff --git a/src/soc/intel/tigerlake/i2c.c b/src/soc/intel/tigerlake/i2c.c
new file mode 100644
index 0000000000..3d00372d59
--- /dev/null
+++ b/src/soc/intel/tigerlake/i2c.c
@@ -0,0 +1,62 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2019 Intel Corp.
+ *
+ * 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.
+ */
+
+/*
+ * This file is created based on Intel Tiger Lake Processor PCH Datasheet
+ * Document number: 575857
+ * Chapter number: 13
+ */
+
+#include <device/device.h>
+#include <drivers/i2c/designware/dw_i2c.h>
+#include <soc/pci_devs.h>
+
+int dw_i2c_soc_devfn_to_bus(unsigned int devfn)
+{
+	switch (devfn) {
+	case PCH_DEVFN_I2C0:
+		return 0;
+	case PCH_DEVFN_I2C1:
+		return 1;
+	case PCH_DEVFN_I2C2:
+		return 2;
+	case PCH_DEVFN_I2C3:
+		return 3;
+	case PCH_DEVFN_I2C4:
+		return 4;
+	case PCH_DEVFN_I2C5:
+		return 5;
+	}
+	return -1;
+}
+
+int dw_i2c_soc_bus_to_devfn(unsigned int bus)
+{
+	switch (bus) {
+	case 0:
+		return PCH_DEVFN_I2C0;
+	case 1:
+		return PCH_DEVFN_I2C1;
+	case 2:
+		return PCH_DEVFN_I2C2;
+	case 3:
+		return PCH_DEVFN_I2C3;
+	case 4:
+		return PCH_DEVFN_I2C4;
+	case 5:
+		return PCH_DEVFN_I2C5;
+	}
+	return -1;
+}