Add Intel FSP northbridge support Sandybridge and Ivybridge

Add support for Sandybridge and Ivybridge using the Intel FSP.
The FSP is different enough to warrant its own source files.
This source handle the majority of FSP interaction.

"Intel® Firmware Support Package (Intel® FSP) provides key
programming information for initializing Intel® silicon and can be
easily integrated into a boot loader of the developer’s choice.
It is easy to adopt, scalable to design, reduces time-to-market, and
is economical to build."
http://www.intel.com/content/www/us/en/intelligent-systems/intel-firmware-support-package/intel-fsp-overview.html

Change-Id: Ib879c6b0fbf2eb1cbf929a87f592df29ac48bcc5
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-on: http://review.coreboot.org/4015
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

1 files changed, 202 insertions, 0 deletions

diff --git a/src/northbridge/intel/fsp_sandybridge/acpi.c b/src/northbridge/intel/fsp_sandybridge/acpi.c
new file mode 100644
index 0000000000..3c1561590f
--- /dev/null
+++ b/src/northbridge/intel/fsp_sandybridge/acpi.c
@@ -0,0 +1,202 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2007-2009 coresystems GmbH
+ * Copyright (C) 2012 The Chromium OS Authors
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include <types.h>
+#include <string.h>
+#include <console/console.h>
+#include <arch/io.h>
+#include <arch/acpi.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <build.h>
+#include "northbridge.h"
+
+unsigned long acpi_fill_mcfg(unsigned long current)
+{
+	device_t dev;
+	u32 pciexbar = 0;
+	u32 pciexbar_reg;
+	int max_buses;
+
+	dev = dev_find_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_SB, 0);
+	if (!dev)
+		dev = dev_find_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_IB, 0);
+	if (!dev)
+		return current;
+
+	pciexbar_reg=pci_read_config32(dev, PCIEXBAR);
+
+	// MMCFG not supported or not enabled.
+	if (!(pciexbar_reg & (1 << 0)))
+		return current;
+
+	switch ((pciexbar_reg >> 1) & 3) {
+	case 0: // 256MB
+		pciexbar = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28));
+		max_buses = 256;
+		break;
+	case 1: // 128M
+		pciexbar = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28)|(1 << 27));
+		max_buses = 128;
+		break;
+	case 2: // 64M
+		pciexbar = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28)|(1 << 27)|(1 << 26));
+		max_buses = 64;
+		break;
+	default: // RSVD
+		return current;
+	}
+
+	if (!pciexbar)
+		return current;
+
+	current += acpi_create_mcfg_mmconfig((acpi_mcfg_mmconfig_t *) current,
+			pciexbar, 0x0, 0x0, max_buses - 1);
+
+	return current;
+}
+
+static void *get_intel_vbios(void)
+{
+	/* This should probably be looking at CBFS or we should always
+	 * deploy the VBIOS on Intel systems, even if we don't run it
+	 * in coreboot (e.g. SeaBIOS only scenarios).
+	 */
+	u8 *vbios = (u8 *)0xc0000;
+
+	optionrom_header_t *oprom = (optionrom_header_t *)vbios;
+	optionrom_pcir_t *pcir = (optionrom_pcir_t *)(vbios +
+						oprom->pcir_offset);
+
+
+	printk(BIOS_DEBUG, "GET_VBIOS: %x %x %x %x %x\n",
+		oprom->signature, pcir->vendor, pcir->classcode[0],
+		pcir->classcode[1], pcir->classcode[2]);
+
+
+	if ((oprom->signature == OPROM_SIGNATURE) &&
+		(pcir->vendor == PCI_VENDOR_ID_INTEL) &&
+		(pcir->classcode[0] == 0x00) &&
+		(pcir->classcode[1] == 0x00) &&
+		(pcir->classcode[2] == 0x03))
+		return (void *)vbios;
+
+	return NULL;
+}
+
+static int init_opregion_vbt(igd_opregion_t *opregion)
+{
+	void *vbios;
+	vbios = get_intel_vbios();
+	if (!vbios) {
+		printk(BIOS_DEBUG, "VBIOS not found.\n");
+		return 1;
+	}
+
+	printk(BIOS_DEBUG, " ... VBIOS found at %p\n", vbios);
+	optionrom_header_t *oprom = (optionrom_header_t *)vbios;
+	optionrom_vbt_t *vbt = (optionrom_vbt_t *)(vbios +
+						oprom->vbt_offset);
+
+	if (read32((unsigned long)vbt->hdr_signature) != VBT_SIGNATURE) {
+		printk(BIOS_DEBUG, "VBT not found!\n");
+		return 1;
+	}
+
+	memcpy(opregion->header.vbios_version, vbt->coreblock_biosbuild, 4);
+	memcpy(opregion->vbt.gvd1, vbt, vbt->hdr_vbt_size < 7168 ?
+						vbt->hdr_vbt_size : 7168);
+
+	return 0;
+}
+
+
+/* Initialize IGD OpRegion, called from ACPI code */
+int init_igd_opregion(igd_opregion_t *opregion)
+{
+	device_t igd;
+	u16 reg16;
+
+	memset((void *)opregion, 0, sizeof(igd_opregion_t));
+
+	// FIXME if IGD is disabled, we should exit here.
+
+	memcpy(&opregion->header.signature, IGD_OPREGION_SIGNATURE,
+		sizeof(IGD_OPREGION_SIGNATURE));
+
+	/* 8kb */
+	opregion->header.size = sizeof(igd_opregion_t) / 1024;
+	opregion->header.version = IGD_OPREGION_VERSION;
+
+	// FIXME We just assume we're mobile for now
+	opregion->header.mailboxes = MAILBOXES_MOBILE;
+
+	// TODO Initialize Mailbox 1
+
+	// TODO Initialize Mailbox 3
+	opregion->mailbox3.bclp = IGD_BACKLIGHT_BRIGHTNESS;
+	opregion->mailbox3.pfit = IGD_FIELD_VALID | IGD_PFIT_STRETCH;
+	opregion->mailbox3.pcft = 0; // should be (IMON << 1) & 0x3e
+	opregion->mailbox3.cblv = IGD_FIELD_VALID | IGD_INITIAL_BRIGHTNESS;
+	opregion->mailbox3.bclm[0] = IGD_WORD_FIELD_VALID + 0x0000;
+	opregion->mailbox3.bclm[1] = IGD_WORD_FIELD_VALID + 0x0a19;
+	opregion->mailbox3.bclm[2] = IGD_WORD_FIELD_VALID + 0x1433;
+	opregion->mailbox3.bclm[3] = IGD_WORD_FIELD_VALID + 0x1e4c;
+	opregion->mailbox3.bclm[4] = IGD_WORD_FIELD_VALID + 0x2866;
+	opregion->mailbox3.bclm[5] = IGD_WORD_FIELD_VALID + 0x327f;
+	opregion->mailbox3.bclm[6] = IGD_WORD_FIELD_VALID + 0x3c99;
+	opregion->mailbox3.bclm[7] = IGD_WORD_FIELD_VALID + 0x46b2;
+	opregion->mailbox3.bclm[8] = IGD_WORD_FIELD_VALID + 0x50cc;
+	opregion->mailbox3.bclm[9] = IGD_WORD_FIELD_VALID + 0x5ae5;
+	opregion->mailbox3.bclm[10] = IGD_WORD_FIELD_VALID + 0x64ff;
+
+	init_opregion_vbt(opregion);
+
+	/* TODO This needs to happen in S3 resume, too.
+	 * Maybe it should move to the finalize handler
+	 */
+	igd = dev_find_slot(0, PCI_DEVFN(0x2, 0));
+
+	pci_write_config32(igd, ASLS, (u32)opregion);
+	reg16 = pci_read_config16(igd, SWSCI);
+	reg16 &= ~(1 << 0);
+	reg16 |= (1 << 15);
+	pci_write_config16(igd, SWSCI, reg16);
+
+	/* clear dmisci status */
+	reg16 = inw(DEFAULT_PMBASE + TCO1_STS);
+	reg16 |= DMISCI_STS; // reference code does an &=
+	outw(DEFAULT_PMBASE + TCO1_STS, reg16);
+
+	/* clear acpi tco status */
+	outl(DEFAULT_PMBASE + GPE0_STS, TCOSCI_STS);
+
+	/* enable acpi tco scis */
+	reg16 = inw(DEFAULT_PMBASE + GPE0_EN);
+	reg16 |= TCOSCI_EN;
+	outw(DEFAULT_PMBASE + GPE0_EN, reg16);
+
+	return 0;
+}
+
+