soc/intel/cannonlake: Refactor pch_early_init() code

This patch keeps required pch_early_init() function like ABASE programming,
GPE and RTC init into bootblock and moves remaining functions like TCO
configuration and SMBus init into romstage/pch.c in order to maintain only
required chipset programming for bootblock and verstage.

Rename the pch_init function to bootblock_pch_init and romstage_pch_init
according to the stage it is defined in.

TEST=Able to build and boot hatch successfully.

Change-Id: Idf7b04edc3fce147f7857561ce7d5b0cd05f43fe
Signed-off-by: Usha P <usha.p@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37308
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subrata.banik@intel.com>

src/soc/intel/cannonlake/bootblock/bootblock.c

@@ -74,5 +74,5 @@ void bootblock_soc_init(void)
 	 */
 	gpi_clear_int_cfg();
 	report_platform_info();
-	pch_early_init();
+	bootblock_pch_init();
 }

src/soc/intel/cannonlake/bootblock/pch.c

@@ -2,7 +2,7 @@
  * This file is part of the coreboot project.
  *
  * Copyright (C) 2014 Google Inc.
- * Copyright (C) 2017-2018 Intel Corporation.
+ * Copyright (C) 2017-2019 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
@@ -25,8 +25,6 @@
 #include <intelblocks/pcr.h>
 #include <intelblocks/pmclib.h>
 #include <intelblocks/rtc.h>
-#include <intelblocks/smbus.h>
-#include <intelblocks/tco.h>
 #include <soc/bootblock.h>
 #include <soc/gpio.h>
 #include <soc/iomap.h>
@@ -36,7 +34,6 @@
 #include <soc/pci_devs.h>
 #include <soc/pcr_ids.h>
 #include <soc/pm.h>
-#include <soc/smbus.h>
 
 #define PCR_PSF3_TO_SHDW_PMC_REG_BASE_CNP_LP	0x1400
 #define PCR_PSF3_TO_SHDW_PMC_REG_BASE_CNP_H	0x0980
@@ -181,7 +178,7 @@ void pch_early_iorange_init(void)
 	pch_enable_lpc();
 }
 
-void pch_early_init(void)
+void bootblock_pch_init(void)
 {
 	/*
 	 * Enabling ABASE for accessing PM1_STS, PM1_EN, PM1_CNT,
@@ -189,12 +186,6 @@ void pch_early_init(void)
 	 */
 	soc_config_acpibase();
 
-	/* Programming TCO_BASE_ADDRESS and TCO Timer Halt */
-	tco_configure();
-
-	/* Program SMBUS_BASE_ADDRESS and Enable it */
-	smbus_common_init();
-
 	/* Set up GPE configuration */
 	pmc_gpe_init();
 

src/soc/intel/cannonlake/include/soc/bootblock.h

@@ -23,7 +23,7 @@ void bootblock_cpu_init(void);
 void bootblock_pch_early_init(void);
 
 /* Bootblock post console init programming */
-void pch_early_init(void);
+void bootblock_pch_init(void);
 void pch_early_iorange_init(void);
 void report_platform_info(void);
 

src/soc/intel/cannonlake/include/soc/romstage.h

@@ -24,6 +24,7 @@ void mainboard_memory_init_params(FSPM_UPD *mupd);
 /* Provide a callback to allow mainboard to override the DRAM part number. */
 void mainboard_get_dram_part_num(const char **part_num, size_t *len);
 void systemagent_early_init(void);
+void romstage_pch_init(void);
 
 /* Board type */
 enum board_type {

src/soc/intel/cannonlake/romstage/Makefile.inc

@@ -17,3 +17,4 @@ romstage-y += ../../../../cpu/intel/car/romstage.c
 romstage-y += romstage.c
 romstage-y += fsp_params.c
 romstage-y += systemagent.c
+romstage-y += pch.c

src/soc/intel/cannonlake/romstage/pch.c

@@ -0,0 +1,27 @@
+/*
+ * 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.
+ */
+
+#include <intelblocks/smbus.h>
+#include <intelblocks/tco.h>
+#include <soc/romstage.h>
+
+void romstage_pch_init(void)
+{
+	/* Program TCO_BASE_ADDRESS and TCO Timer Halt */
+	tco_configure();
+
+	/* Program SMBUS_BASE_ADDRESS and enable it */
+	smbus_common_init();
+}

src/soc/intel/cannonlake/romstage/romstage.c

@@ -132,6 +132,8 @@ void mainboard_romstage_entry(void)
 
 	/* Program MCHBAR, DMIBAR, GDXBAR and EDRAMBAR */
 	systemagent_early_init();
+	/* Program PCH init */
+	romstage_pch_init();
 	/* initialize Heci interface */
 	heci_init(HECI1_BASE_ADDRESS);