diff --git a/src/northbridge/intel/gm45/gm45.h b/src/northbridge/intel/gm45/gm45.h
new file mode 100644
index 0000000..2b1026c
--- /dev/null
+++ b/src/northbridge/intel/gm45/gm45.h
@@ -0,0 +1,430 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2007-2008 coresystems GmbH
+ *               2012 secunet Security Networks AG
+ *
+ * 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
+ */
+
+#ifndef __NORTHBRIDGE_INTEL_GM45_GM45_H__
+#define __NORTHBRIDGE_INTEL_GM45_GM45_H__ 1
+
+#include "southbridge/intel/i82801ix/i82801ix.h"
+
+#ifndef __ACPI__
+
+#include <stdint.h>
+
+typedef enum {
+	FSB_CLOCK_1067MHz	= 0,
+	FSB_CLOCK_800MHz	= 1,
+	FSB_CLOCK_667MHz	= 2,
+} fsb_clock_t;
+
+typedef enum { /* Steppings below B1 were pre-production,
+		  conversion stepping A1 is... ?
+		  We'll support B1, B2, B3, and conversion stepping A1. */
+	STEPPING_A0 = 0,
+	STEPPING_A1 = 1,
+	STEPPING_A2 = 2,
+	STEPPING_A3 = 3,
+	STEPPING_B0 = 4,
+	STEPPING_B1 = 5,
+	STEPPING_B2 = 6,
+	STEPPING_B3 = 7,
+	STEPPING_CONVERSION_A1 = 9,
+} stepping_t;
+
+typedef enum {
+	GMCH_GM45 = 0,
+	GMCH_GM47,
+	GMCH_GM49,
+	GMCH_GE45,
+	GMCH_GL40,
+	GMCH_GL43,
+	GMCH_GS40,
+	GMCH_GS45,
+	GMCH_PM45,
+	GMCH_UNKNOWN
+} gmch_gfx_t;
+
+typedef enum {
+	MEM_CLOCK_533MHz  = 0,
+	MEM_CLOCK_400MHz  = 1,
+	MEM_CLOCK_333MHz  = 2,
+	MEM_CLOCK_1067MT  = 0,
+	MEM_CLOCK_800MT   = 1,
+	MEM_CLOCK_667MT   = 2,
+} mem_clock_t;
+
+typedef enum {
+	DDR1 = 1,
+	DDR2 = 2,
+	DDR3 = 3,
+} ddr_t;
+
+typedef enum {
+	CHANNEL_MODE_SINGLE,
+	CHANNEL_MODE_DUAL_ASYNC,
+	CHANNEL_MODE_DUAL_INTERLEAVED,
+} channel_mode_t;
+
+typedef enum { /* as in DDR3 spd */
+	CHIP_WIDTH_x4	= 0,
+	CHIP_WIDTH_x8	= 1,
+	CHIP_WIDTH_x16	= 2,
+	CHIP_WIDTH_x32	= 3,
+} chip_width_t;
+
+typedef enum { /* as in DDR3 spd */
+	CHIP_CAP_256M	= 0,
+	CHIP_CAP_512M	= 1,
+	CHIP_CAP_1G	= 2,
+	CHIP_CAP_2G	= 3,
+	CHIP_CAP_4G	= 4,
+	CHIP_CAP_8G	= 5,
+	CHIP_CAP_16G	= 6,
+} chip_capacity_t;
+
+typedef struct {
+	unsigned int	CAS;
+	fsb_clock_t	fsb_clock;
+	mem_clock_t	mem_clock;
+	channel_mode_t	channel_mode;
+	unsigned int	tRAS;
+	unsigned int	tRP;
+	unsigned int	tRCD;
+	unsigned int	tRFC;
+	unsigned int	tWR;
+	unsigned int	tRD;
+	unsigned int	tRRD;
+	unsigned int	tFAW;
+	unsigned int	tWL;
+} timings_t;
+
+typedef struct {
+	unsigned int	card_type; /* 0x0: unpopulated,
+				      0xa - 0xf: raw card type A - F */
+	chip_width_t	chip_width;
+	chip_capacity_t	chip_capacity;
+	unsigned int	page_size; /* of whole DIMM in Bytes (4096 or 8192) */
+	unsigned int	banks;
+	unsigned int	ranks;
+	unsigned int	rank_capacity_mb; /* per rank in Mega Bytes */
+} dimminfo_t;
+
+/* The setup is one DIMM per channel, so there's no need to find a
+   common timing setup between multiple chips (but chip and controller
+   still need to be coordinated */
+typedef struct {
+	stepping_t	stepping;
+	int		txt_enabled;
+	int		cores;
+	gmch_gfx_t	gfx_type;
+	int		gs45_low_power_mode; /* low power mode of GMCH_GS45 */
+	int		max_ddr2_mhz;
+	int		max_ddr3_mt;
+	fsb_clock_t	max_fsb;
+	int		max_fsb_mhz;
+	int		max_render_mhz;
+
+	int		spd_type;
+	timings_t	selected_timings;
+	dimminfo_t	dimms[2];
+} sysinfo_t;
+#define TOTAL_CHANNELS 2
+#define CHANNEL_IS_POPULATED(dimms, idx) (dimms[idx].card_type != 0)
+#define CHANNEL_IS_CARDF(dimms, idx) (dimms[idx].card_type == 0xf)
+#define IF_CHANNEL_POPULATED(dimms, idx) if (dimms[idx].card_type != 0)
+#define FOR_EACH_CHANNEL(idx) \
+	for (idx = 0; idx < TOTAL_CHANNELS; ++idx)
+#define FOR_EACH_POPULATED_CHANNEL(dimms, idx) \
+	FOR_EACH_CHANNEL(idx) IF_CHANNEL_POPULATED(dimms, idx)
+
+#define RANKS_PER_CHANNEL 4 /* Only two may be populated */
+#define IF_RANK_POPULATED(dimms, ch, r) \
+	if (dimms[ch].card_type && ((r) < dimms[ch].ranks))
+#define FOR_EACH_RANK_IN_CHANNEL(r) \
+	for (r = 0; r < RANKS_PER_CHANNEL; ++r)
+#define FOR_EACH_POPULATED_RANK_IN_CHANNEL(dimms, ch, r) \
+	FOR_EACH_RANK_IN_CHANNEL(r) IF_RANK_POPULATED(dimms, ch, r)
+#define FOR_EACH_RANK(ch, r) \
+	FOR_EACH_CHANNEL(ch) FOR_EACH_RANK_IN_CHANNEL(r)
+#define FOR_EACH_POPULATED_RANK(dimms, ch, r) \
+	FOR_EACH_RANK(ch, r) IF_RANK_POPULATED(dimms, ch, r)
+
+#define DDR3_MAX_CAS 18
+
+enum {
+	VCO_2666 = 4,
+	VCO_3200 = 0,
+	VCO_4000 = 1,
+	VCO_5333 = 2,
+};
+
+#endif
+
+/* Offsets of read/write training results in CMOS.
+   They will be restored upon S3 resumes. */
+#define CMOS_READ_TRAINING	0x80 /* 16 bytes */
+#define CMOS_WRITE_TRAINING	0x90 /* 16 bytes
+					(could be reduced to 10 bytes) */
+
+
+#define DEFAULT_MCHBAR		0xfed14000
+#define DEFAULT_DMIBAR		0xfed18000
+#define DEFAULT_EPBAR		0xfed19000
+#define DEFAULT_HECIBAR		0xfed1a000
+
+				/* 4 KB per PCIe device */
+#define DEFAULT_PCIEXBAR	CONFIG_MMCONF_BASE_ADDRESS
+
+#define IOMMU_BASE1 0xfed90000
+#define IOMMU_BASE2 0xfed91000
+#define IOMMU_BASE3 0xfed92000
+#define IOMMU_BASE4 0xfed93000
+
+/*
+ * D0:F0
+ */
+#define D0F0_EPBAR_LO 0x40
+#define D0F0_EPBAR_HI 0x44
+#define D0F0_MCHBAR_LO 0x48
+#define D0F0_MCHBAR_HI 0x4c
+#define D0F0_GGC 0x52
+#define D0F0_DEVEN 0x54
+#define D0F0_PCIEXBAR_LO 0x60
+#define D0F0_PCIEXBAR_HI 0x64
+#define D0F0_DMIBAR_LO 0x68
+#define D0F0_DMIBAR_HI 0x6c
+#define D0F0_PMBASE 0x78
+#define D0F0_PAM(x) (0x90+(x)) /* 0-6*/
+#define D0F0_REMAPBASE 0x98
+#define D0F0_REMAPLIMIT 0x9a
+#define D0F0_SMRAM 0x9d
+#define D0F0_ESMRAMC 0x9e
+#define D0F0_TOM 0xa0
+#define D0F0_TOUUD 0xa2
+#define D0F0_TOLUD 0xb0
+#define D0F0_SKPD 0xdc /* Scratchpad Data */
+#define D0F0_CAPID0 0xe0
+
+/*
+ * D1:F0 PEG
+ */
+#define PEG_CAP 0xa2
+#define SLOTCAP 0xb4
+#define PEGLC 0xec
+#define D1F0_VCCAP 0x104
+#define D1F0_VC0RCTL 0x114
+
+/*
+ * Graphics frequencies
+ */
+#define GCFGC_PCIDEV		PCI_DEV(0, 2, 0)
+#define GCFGC_OFFSET		0xf0
+#define GCFGC_CR_SHIFT		0
+#define GCFGC_CR_MASK		(0xf << GCFGC_CR_SHIFT)
+#define GCFGC_CS_SHIFT		8
+#define GCFGC_CS_MASK		(0xf << GCFGC_CS_SHIFT)
+#define GCFGC_CD_SHIFT		12
+#define GCFGC_CD_MASK		(0x1 << GCFGC_CD_SHIFT)
+#define GCFGC_UPDATE_SHIFT	5
+#define GCFGC_UPDATE		(0x1 << GCFGC_UPDATE_SHIFT)
+
+/*
+ * MCHBAR
+ */
+
+#define MCHBAR8(x) *((volatile u8 *)(DEFAULT_MCHBAR + x))
+#define MCHBAR16(x) *((volatile u16 *)(DEFAULT_MCHBAR + x))
+#define MCHBAR32(x) *((volatile u32 *)(DEFAULT_MCHBAR + x))
+
+#define PMSTS_MCHBAR		0x0f14	/* Self refresh channel status */
+#define PMSTS_WARM_RESET	(1 << 1)
+#define PMSTS_BOTH_SELFREFRESH	(1 << 0)
+
+#define CLKCFG_MCHBAR		0x0c00
+#define CLKCFG_FSBCLK_SHIFT	0
+#define CLKCFG_FSBCLK_MASK	(7 << CLKCFG_FSBCLK_SHIFT)
+#define CLKCFG_MEMCLK_SHIFT	4
+#define CLKCFG_MEMCLK_MASK	(7 << CLKCFG_MEMCLK_SHIFT)
+#define CLKCFG_UPDATE		(1 << 12)
+
+#define SSKPD_MCHBAR		0x0c1c
+#define SSKPD_CLK_SHIFT		0
+#define SSKPD_CLK_MASK		(7 << SSKPD_CLK_SHIFT)
+
+#define DCC_MCHBAR		0x200
+#define DCC_NO_CHANXOR		(1 << 10)
+#define DCC_INTERLEAVED		(1 <<  1)
+#define DCC_CMD_SHIFT		16
+#define DCC_CMD_MASK		(7 << DCC_CMD_SHIFT)
+#define DCC_CMD_NOP		(1 << DCC_CMD_SHIFT)
+				/* For mode register mr0: */
+#define DCC_SET_MREG		(3 << DCC_CMD_SHIFT)
+				/* For extended mode registers mr1 to mr3: */
+#define DCC_SET_EREG		(4 << DCC_CMD_SHIFT)
+#define DCC_SET_EREG_SHIFT	21
+#define DCC_SET_EREG_MASK	(DCC_CMD_MASK | (3 << DCC_SET_EREG_SHIFT))
+#define DCC_SET_EREGx(x)	((DCC_SET_EREG |			   \
+					((x - 1) << DCC_SET_EREG_SHIFT)) & \
+				 DCC_SET_EREG_MASK)
+
+/* Per channel DRAM Row Attribute registers (32-bit) */
+#define CxDRA_MCHBAR(x)		(0x1208 + (x * 0x0100))
+#define CxDRA_PAGESIZE_SHIFT(r)	(r * 4)		/* Per rank r */
+#define CxDRA_PAGESIZE_MASKr(r)	(0x7 << CxDRA_PAGESIZE_SHIFT(r))
+#define CxDRA_PAGESIZE_MASK	0x0000ffff
+#define CxDRA_PAGESIZE(r, p)	/* for log2(dimm page size in bytes) p */ \
+	(((p - 10) << CxDRA_PAGESIZE_SHIFT(r)) & CxDRA_PAGESIZE_MASKr(r))
+#define CxDRA_BANKS_SHIFT(r)	((r * 3) + 16)
+#define CxDRA_BANKS_MASKr(r)	(0x3 << CxDRA_BANKS_SHIFT(r))
+#define CxDRA_BANKS_MASK	0x07ff0000
+#define CxDRA_BANKS(r, b)	/* for number of banks b */ \
+	((b << (CxDRA_BANKS_SHIFT(r) - 3)) & CxDRA_BANKS_MASKr(r))
+
+/*
+ * Per channel DRAM Row Boundary registers (32-bit)
+ * Every two ranks share one register and must be programmed at the same time.
+ * All registers (4 ranks per channel) have to be set.
+ */
+#define CxDRBy_MCHBAR(x, r)	(0x1200 + (x * 0x0100) + ((r/2) * 4))
+#define CxDRBy_BOUND_SHIFT(r)	((r % 2) * 16)
+#define CxDRBy_BOUND_MASK(r)	(0x1fc << CxDRBy_BOUND_SHIFT(r))
+#define CxDRBy_BOUND_MB(r, b)	/* for boundary in MB b */ \
+	(((b >> 5) << CxDRBy_BOUND_SHIFT(r)) & CxDRBy_BOUND_MASK(r))
+
+#define CxDRC0_MCHBAR(x)	(0x1230 + (x * 0x0100))
+#define CxDRC0_RANKEN0		(1 << 24)	/* Rank Enable */
+#define CxDRC0_RANKEN1		(1 << 25)
+#define CxDRC0_RANKEN2		(1 << 26)
+#define CxDRC0_RANKEN3		(1 << 27)
+#define CxDRC0_RANKEN(r)	(1 << (24 + r))
+#define CxDRC0_RANKEN_MASK	(0xf << 24)
+#define CxDRC0_RMS_SHIFT	8		/* Refresh Mode Select */
+#define CxDRC0_RMS_MASK		(7 << CxDRC0_RMS_SHIFT)
+#define CxDRC0_RMS_78US		(2 << CxDRC0_RMS_SHIFT)
+#define CxDRC0_RMS_39US		(3 << CxDRC0_RMS_SHIFT)
+
+#define CxDRC1_MCHBAR(x)	(0x1234 + (x * 0x0100))
+#define CxDRC1_SSDS_SHIFT	24
+#define CxDRC1_SSDS_MASK	(0xff << CxDRC1_SSDS_SHIFT)
+#define CxDRC1_DS		(0x91 << CxDRC1_SSDS_SHIFT)
+#define CxDRC1_SS		(0xb1 << CxDRC1_SSDS_SHIFT)
+#define CxDRC1_NOTPOP(r)	(1 << (16 + r)) /* Write 1 for Not Populated */
+#define CxDRC1_NOTPOP_MASK	(0xf << 16)
+#define CxDRC1_MUSTWR		(3 << 11)
+
+#define CxDRC2_MCHBAR(x)	(0x1238 + (x * 0x0100))
+#define CxDRC2_NOTPOP(r)	(1 << (24 + r)) /* Write 1 for Not Populated */
+#define CxDRC2_NOTPOP_MASK	(0xf << 24)
+#define CxDRC2_MUSTWR		(1 << 12)
+#define CxDRC2_CLK1067MT	(1 << 0)
+
+/* DRAM Timing registers (32-bit each) */
+#define CxDRT0_MCHBAR(x)	(0x1210 + (x * 0x0100))
+#define CxDRT0_BtB_WtP_SHIFT	26
+#define CxDRT0_BtB_WtP_MASK	(0x1f << CxDRT0_BtB_WtP_SHIFT)
+#define CxDRT0_BtB_WtR_SHIFT	20
+#define CxDRT0_BtB_WtR_MASK	(0x1f << CxDRT0_BtB_WtR_SHIFT)
+#define CxDRT1_MCHBAR(x)	(0x1214 + (x * 0x0100))
+#define CxDRT2_MCHBAR(x)	(0x1218 + (x * 0x0100))
+#define CxDRT3_MCHBAR(x)	(0x121c + (x * 0x0100))
+#define CxDRT4_MCHBAR(x)	(0x1220 + (x * 0x0100))
+#define CxDRT5_MCHBAR(x)	(0x1224 + (x * 0x0100))
+#define CxDRT6_MCHBAR(x)	(0x1228 + (x * 0x0100))
+
+/* Clock disable registers (32-bit each) */
+#define CxDCLKDIS_MCHBAR(x)	(0x120c + (x * 0x0100))
+#define CxDCLKDIS_MASK		3
+#define CxDCLKDIS_ENABLE	3 /* Always enable both clock pairs. */
+
+/* On-Die-Termination registers (2x 32-bit per channel) */
+#define CxODT_HIGH(x)		(0x124c + (x * 0x0100))
+#define CxODT_LOW(x)		(0x1248 + (x * 0x0100))
+
+/* Write Training registers. */
+#define CxWRTy_MCHBAR(ch, s)	(0x1470 + (ch * 0x0100) + ((3 - s) * 4))
+
+#define CxGTEW(x)		(0x1270+(x*0x100))
+#define CxGTC(x)		(0x1274+(x*0x100))
+#define CxDTPEW(x)		(0x1278+(x*0x100))
+#define CxDTAEW(x)		(0x1280+(x*0x100))
+#define CxDTC(x)		(0x1288+(x*0x100))
+
+
+/*
+ * DMIBAR
+ */
+
+#define DMIBAR8(x) *((volatile u8 *)(DEFAULT_DMIBAR + x))
+#define DMIBAR16(x) *((volatile u16 *)(DEFAULT_DMIBAR + x))
+#define DMIBAR32(x) *((volatile u32 *)(DEFAULT_DMIBAR + x))
+
+#define DMIVC0RCTL 0x14
+#define DMIVC1RCTL 0x20
+#define DMIVC1RSTS 0x26
+#define DMIESD  0x44
+#define DMILE1D 0x50
+#define DMILE1A 0x58
+#define DMILE2D 0x60
+#define DMILE2A 0x68
+
+
+/*
+ * EPBAR
+ */
+
+#define EPBAR8(x) *((volatile u8 *)(DEFAULT_EPBAR + x))
+#define EPBAR16(x) *((volatile u16 *)(DEFAULT_EPBAR + x))
+#define EPBAR32(x) *((volatile u32 *)(DEFAULT_EPBAR + x))
+
+#define EPESD 0x44
+#define EPLE1D 0x50
+#define EPLE1A 0x58
+#define EPLE2D 0x60
+
+
+#ifndef __ACPI__
+void gm45_early_init(void);
+void gm45_early_reset(void);
+
+void enter_raminit_or_reset(void);
+void get_gmch_info(sysinfo_t *);
+void raminit(sysinfo_t *, int s3resume);
+void raminit_thermal(const sysinfo_t *);
+void init_igd(const sysinfo_t *, int no_igd, int no_peg);
+void init_pm(const sysinfo_t *);
+
+int raminit_read_vco_index(void);
+u32 raminit_get_rank_addr(unsigned int channel, unsigned int rank);
+
+void raminit_rcomp_calibration(stepping_t stepping);
+void raminit_reset_readwrite_pointers(void);
+void raminit_receive_enable_calibration(const timings_t *, const dimminfo_t *);
+void raminit_write_training(const mem_clock_t, const dimminfo_t *, int s3resume);
+void raminit_read_training(const dimminfo_t *, int s3resume);
+
+void gm45_late_init(stepping_t);
+
+u32 decode_igd_memory_size(u32 gms);
+u32 decode_igd_gtt_size(u32 gsm);
+u32 get_top_of_ram(void);
+
+void init_iommu(void);
+#endif
+
+#endif