nb/intel/nehalem: Move romstage boilerplate to a common location

Move the mainboard_romstage_entry to a common location and provide
mainboard specific callbacks.

Change-Id: Ia827053617cead5d2cf8e9f06cb68c2cbb668ca9
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35771
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>

src/northbridge/intel/nehalem/Makefile.inc

@@ -26,6 +26,7 @@ romstage-y += memmap.c
 romstage-y += raminit.c
 romstage-y += raminit_tables.c
 romstage-y += early_init.c
+romstage-y += romstage.c
 
 smm-y += finalize.c
 

src/northbridge/intel/nehalem/nehalem.h

@@ -256,6 +256,8 @@ void intel_nehalem_finalize_smm(void);
 int bridge_silicon_revision(void);
 void nehalem_early_initialization(int chipset_type);
 void nehalem_late_initialization(void);
+void mainboard_pre_raminit(void);
+void mainboard_get_spd_map(u8 *spd_addrmap);
 
 #endif /* !__SMM__ */
 

src/northbridge/intel/nehalem/romstage.c

@@ -0,0 +1,126 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2007-2010 coresystems GmbH
+ * Copyright (C) 2011 The ChromiumOS Authors.  All rights reserved.
+ * Copyright (C) 2014 Vladimir Serbinenko
+ *
+ * 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 <stdint.h>
+#include <console/console.h>
+#include <cf9_reset.h>
+#include <device/pci_ops.h>
+#include <cpu/x86/lapic.h>
+#include <timestamp.h>
+#include <romstage_handoff.h>
+#include "nehalem.h"
+#include <arch/romstage.h>
+#include <device/pci_def.h>
+#include <device/device.h>
+#include <northbridge/intel/nehalem/chip.h>
+#include <northbridge/intel/nehalem/raminit.h>
+#include <southbridge/intel/ibexpeak/pch.h>
+#include <southbridge/intel/ibexpeak/me.h>
+#include <southbridge/intel/common/pmclib.h>
+#include <southbridge/intel/common/gpio.h>
+
+/* Platform has no romstage entry point under mainboard directory,
+ * so this one is named with prefix mainboard.
+ */
+void mainboard_romstage_entry(void)
+{
+	u32 reg32;
+	int s3resume = 0;
+	u8 spd_addrmap[4] = {};
+
+	enable_lapic();
+
+	/* TODO, make this configurable */
+	nehalem_early_initialization(NEHALEM_MOBILE);
+
+	/* mainboard_lpc_init */
+	mainboard_lpc_init();
+
+	/* Enable GPIOs */
+	pci_write_config32(PCH_LPC_DEV, GPIO_BASE, DEFAULT_GPIOBASE | 1);
+	pci_write_config8(PCH_LPC_DEV, GPIO_CNTL, 0x10);
+
+	setup_pch_gpios(&mainboard_gpio_map);
+
+	/* TODO, make this configurable */
+	pch_setup_cir(NEHALEM_MOBILE);
+
+	southbridge_configure_default_intmap();
+
+	/* Must set BIT0 (hides performance counters PCI device).
+	   coreboot enables the Rate Matching Hub which makes the UHCI PCI
+	   devices disappear, so BIT5-12 and BIT28 can be set to hide those. */
+	RCBA32(FD) = (1 << 28) | (0xff << 5) | 1;
+
+	/* Set reserved bit to 1 */
+	RCBA32(FD2) = 1;
+
+	early_usb_init(mainboard_usb_ports);
+
+	/* Initialize console device(s) */
+	console_init();
+
+	/* Read PM1_CNT, DON'T CLEAR IT or raminit will fail! */
+	reg32 = inl(DEFAULT_PMBASE + 0x04);
+	printk(BIOS_DEBUG, "PM1_CNT: %08x\n", reg32);
+	if (((reg32 >> 10) & 7) == 5) {
+		u8 reg8;
+		reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa2);
+		printk(BIOS_DEBUG, "a2: %02x\n", reg8);
+		if (!(reg8 & 0x20)) {
+			outl(reg32 & ~(7 << 10), DEFAULT_PMBASE + 0x04);
+			printk(BIOS_DEBUG, "Bad resume from S3 detected.\n");
+		} else {
+			if (acpi_s3_resume_allowed()) {
+				printk(BIOS_DEBUG, "Resume from S3 detected.\n");
+				s3resume = 1;
+			} else {
+				printk(BIOS_DEBUG,
+				       "Resume from S3 detected, but disabled.\n");
+			}
+		}
+	}
+
+	/* Enable SMBUS. */
+	enable_smbus();
+
+	early_thermal_init();
+
+	timestamp_add_now(TS_BEFORE_INITRAM);
+
+	chipset_init(s3resume);
+
+	mainboard_pre_raminit();
+
+	mainboard_get_spd_map(spd_addrmap);
+
+	raminit(s3resume, spd_addrmap);
+
+	timestamp_add_now(TS_AFTER_INITRAM);
+
+	intel_early_me_status();
+
+	if (s3resume) {
+		/* Clear SLP_TYPE. This will break stage2 but
+		 * we care for that when we get there.
+		 */
+		reg32 = inl(DEFAULT_PMBASE + 0x04);
+		outl(reg32 & ~(7 << 10), DEFAULT_PMBASE + 0x04);
+	}
+
+	romstage_handoff_init(s3resume);
+}