ARM: Generalize armv7 as arm.

There are ARM systems which are essentially heterogeneous multicores where
some cores implement a different ARM architecture version than other cores. A
specific example is the tegra124 which boots on an ARMv4 coprocessor while
most code, including most of the firmware, runs on the main ARMv7 core. To
support SOCs like this, the plan is to generalize the ARM architecture so that
all versions are available, and an SOC/CPU can then select what architecture
variant should be used for each component of the firmware; bootblock,
romstage, and ramstage.

Old-Change-Id: I22e048c3bc72bd56371e14200942e436c1e312c2
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: https://chromium-review.googlesource.com/171338
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>
(cherry picked from commit 8423a41529da0ff67fb9873be1e2beb30b09ae2d)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>

ARM: Split out ARMv7 code and make it possible to have other arch versions.

We don't always want to use ARMv7 code when building for ARM, so we should
separate out the ARMv7 code so it can be excluded, and also make it possible
to include code for some other version of the architecture instead, all per
build component for cases where we need more than one architecture version
at a time.

The tegra124 bootblock will ultimately need to be ARMv4, but until we have
some ARMv4 code to switch over to we can leave it set to ARMv7.

Old-Change-Id: Ia982c91057fac9c252397b7c866224f103761cc7
Reviewed-on: https://chromium-review.googlesource.com/171400
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
(cherry picked from commit 799514e6060aa97acdcf081b5c48f965be134483)

Squashed two related patches for splitting ARM support into general
ARM support and ARMv7 specific pieces.

Change-Id: Ic6511507953a2223c87c55f90252c4a4e1dd6010
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6782
Tested-by: build bot (Jenkins)

19 files changed, 1248 insertions, 0 deletions

diff --git a/src/arch/arm/include/arch/boot/boot.h b/src/arch/arm/include/arch/boot/boot.h
new file mode 100644
index 0000000000..08651cd1a8
--- /dev/null
+++ b/src/arch/arm/include/arch/boot/boot.h
@@ -0,0 +1,8 @@
+#ifndef ASM_ARM_BOOT_H
+#define ASM_ARM_BOOT_H
+
+#define ELF_CLASS	ELFCLASS32
+#define ELF_DATA	ELFDATA2LSB
+#define ELF_ARCH	EM_ARM
+
+#endif /* ASM_ARM_BOOT_H */
diff --git a/src/arch/arm/include/arch/byteorder.h b/src/arch/arm/include/arch/byteorder.h
new file mode 100644
index 0000000000..8dc069f486
--- /dev/null
+++ b/src/arch/arm/include/arch/byteorder.h
@@ -0,0 +1,27 @@
+#ifndef _BYTEORDER_H
+#define _BYTEORDER_H
+
+#define __LITTLE_ENDIAN 1234
+
+#include <stdint.h>
+#include <swab.h>
+
+#define cpu_to_le64(x) ((uint64_t)(x))
+#define le64_to_cpu(x) ((uint64_t)(x))
+#define cpu_to_le32(x) ((uint32_t)(x))
+#define le32_to_cpu(x) ((uint32_t)(x))
+#define cpu_to_le16(x) ((uint16_t)(x))
+#define le16_to_cpu(x) ((uint16_t)(x))
+#define cpu_to_be64(x) swab64(x)
+#define be64_to_cpu(x) swab64(x)
+#define cpu_to_be32(x) swab32((x))
+#define be32_to_cpu(x) swab32((x))
+#define cpu_to_be16(x) swab16((x))
+#define be16_to_cpu(x) swab16((x))
+
+#define ntohll(x) be64_to_cpu(x)
+#define htonll(x) cpu_to_be64(x)
+#define ntohl(x)  be32_to_cpu(x)
+#define htonl(x)  cpu_to_be32(x)
+
+#endif /* _BYTEORDER_H */
diff --git a/src/arch/arm/include/arch/early_variables.h b/src/arch/arm/include/arch/early_variables.h
new file mode 100644
index 0000000000..cec0a46239
--- /dev/null
+++ b/src/arch/arm/include/arch/early_variables.h
@@ -0,0 +1,59 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011 The ChromiumOS Authors.  All rights reserved.
+ *
+ * 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 ARCH_EARLY_VARIABLES_H
+#define ARCH_EARLY_VARIABLES_H
+
+#ifdef __PRE_RAM__
+#define CAR_GLOBAL __attribute__((section(".car.global_data")))
+#define CAR_CBMEM __attribute__((section(".car.cbmem_console")))
+#else
+#define CAR_GLOBAL
+#define CAR_CBMEM
+#endif
+
+#if defined(__PRE_RAM__)
+#define CAR_MIGRATE_ATTR __attribute__ ((used,section (".car.migrate")))
+
+/* Call migrate_fn_() when CAR globals are migrated. */
+#define CAR_MIGRATE(migrate_fn_) \
+	static void (* const migrate_fn_ ## _ptr)(void) CAR_MIGRATE_ATTR = \
+	migrate_fn_;
+
+/* Get the correct pointer for the CAR global variable. */
+void *car_get_var_ptr(void *var);
+
+/* Get and set a primitive type global variable. */
+#define car_get_var(var) \
+	*(typeof(var) *)car_get_var_ptr(&(var))
+#define car_set_var(var, val) \
+	do { car_get_var(var) = (val); } while(0)
+
+/* Migrate the CAR variables to memory. */
+void car_migrate_variables(void);
+
+#else
+#define CAR_MIGRATE(migrate_fn_)
+static inline void *car_get_var_ptr(void *var) { return var; }
+#define car_get_var(var) (var)
+#define car_set_var(var, val) do { (var) = (val); } while (0)
+static inline void car_migrate_variables(void) { }
+#endif
+
+#endif
diff --git a/src/arch/arm/include/arch/exception.h b/src/arch/arm/include/arch/exception.h
new file mode 100644
index 0000000000..57076bd57b
--- /dev/null
+++ b/src/arch/arm/include/arch/exception.h
@@ -0,0 +1,38 @@
+/*
+ * This file is part of the libpayload project.
+ *
+ * Copyright 2013 Google Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _ARCH_EXCEPTION_H
+#define _ARCH_EXCEPTION_H
+
+#include <stdint.h>
+
+void exception_init(void);
+void set_vbar(uint32_t vbar);
+
+#endif
diff --git a/src/arch/arm/include/arch/hlt.h b/src/arch/arm/include/arch/hlt.h
new file mode 100644
index 0000000000..285b6f8786
--- /dev/null
+++ b/src/arch/arm/include/arch/hlt.h
@@ -0,0 +1,9 @@
+#ifndef ARCH_HLT_H
+#define ARCH_HLT_H
+
+static inline __attribute__((always_inline)) void hlt(void)
+{
+	for (;;) ;
+}
+
+#endif /* ARCH_HLT_H */
diff --git a/src/arch/arm/include/arch/io.h b/src/arch/arm/include/arch/io.h
new file mode 100644
index 0000000000..e53729708d
--- /dev/null
+++ b/src/arch/arm/include/arch/io.h
@@ -0,0 +1,94 @@
+/*
+ * Originally imported from linux/include/asm-arm/io.h. This file has changed
+ * substantially since then.
+ *
+ *  Copyright 2013 Google Inc.
+ *  Copyright (C) 1996-2000 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Modifications:
+ *  08-Apr-2013	G	Replaced several macros with inlines for type safety.
+ *  16-Sep-1996	RMK	Inlined the inx/outx functions & optimised for both
+ *			constant addresses and variable addresses.
+ *  04-Dec-1997	RMK	Moved a lot of this stuff to the new architecture
+ *			specific IO header files.
+ *  27-Mar-1999	PJB	Second parameter of memcpy_toio is const..
+ *  04-Apr-1999	PJB	Added check_signature.
+ *  12-Dec-1999	RMK	More cleanups
+ *  18-Jun-2000 RMK	Removed virt_to_* and friends definitions
+ */
+#ifndef __ASM_ARM_IO_H
+#define __ASM_ARM_IO_H
+
+#include <arch/byteorder.h>
+#include <arch/arch_io.h>
+#include <stdint.h>
+
+/*
+ * FIXME: These are to avoid breaking existing ARM code. We should eventually
+ * re-factor all code to specify the data length intended.
+  */
+#define readb(a)	read8(a)
+#define writeb(v,a)	write8(v,a)
+#define readl(a)	read32(a)
+#define writel(v,a)	write32(v,a)
+
+/*
+ * Clear and set bits in one shot. These macros can be used to clear and
+ * set multiple bits in a register using a single call. These macros can
+ * also be used to set a multiple-bit bit pattern using a mask, by
+ * specifying the mask in the 'clear' parameter and the new bit pattern
+ * in the 'set' parameter.
+ */
+
+#define out_arch(type,endian,a,v)	write##type(cpu_to_##endian(v),a)
+#define in_arch(type,endian,a)		endian##_to_cpu(read##type(a))
+
+#define out_le32(a,v)	out_arch(l,le32,a,v)
+#define out_le16(a,v)	out_arch(w,le16,a,v)
+
+#define in_le32(a)	in_arch(l,le32,a)
+#define in_le16(a)	in_arch(w,le16,a)
+
+#define out_be32(a,v)	out_arch(l,be32,a,v)
+#define out_be16(a,v)	out_arch(w,be16,a,v)
+
+#define in_be32(a)	in_arch(l,be32,a)
+#define in_be16(a)	in_arch(w,be16,a)
+
+#define out_8(a,v)	writeb(v,a)
+#define in_8(a)		readb(a)
+
+#define clrbits(type, addr, clear) \
+	out_##type((addr), in_##type(addr) & ~(clear))
+
+#define setbits(type, addr, set) \
+	out_##type((addr), in_##type(addr) | (set))
+
+#define clrsetbits(type, addr, clear, set) \
+	out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
+
+#define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
+#define setbits_be32(addr, set) setbits(be32, addr, set)
+#define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
+
+#define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
+#define setbits_le32(addr, set) setbits(le32, addr, set)
+#define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
+
+#define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
+#define setbits_be16(addr, set) setbits(be16, addr, set)
+#define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
+
+#define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
+#define setbits_le16(addr, set) setbits(le16, addr, set)
+#define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
+
+#define clrbits_8(addr, clear) clrbits(8, addr, clear)
+#define setbits_8(addr, set) setbits(8, addr, set)
+#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
+
+#endif	/* __ASM_ARM_IO_H */
diff --git a/src/arch/arm/include/arch/pci_ops.h b/src/arch/arm/include/arch/pci_ops.h
new file mode 100644
index 0000000000..faa77012d3
--- /dev/null
+++ b/src/arch/arm/include/arch/pci_ops.h
@@ -0,0 +1,25 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2013 Google Inc.
+ *
+ * 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 ARCH_ARM_PCI_OPS_H
+#define ARCH_ARM_PCI_OPS_H
+
+/* Empty stub until PCI includes are properly fixed. */
+
+#endif
diff --git a/src/arch/arm/include/arch/stages.h b/src/arch/arm/include/arch/stages.h
new file mode 100644
index 0000000000..39fed990c5
--- /dev/null
+++ b/src/arch/arm/include/arch/stages.h
@@ -0,0 +1,28 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2013 The ChromiumOS 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
+ */
+
+#ifndef __ARCH_STAGES_H
+#define __ARCH_STAGES_H
+
+extern void main(void);
+
+void stage_entry(void) __attribute__((section(".text.stage_entry.arm")));
+void stage_exit(void *);
+
+#endif
diff --git a/src/arch/arm/include/armv7.h b/src/arch/arm/include/armv7.h
new file mode 100644
index 0000000000..147323457a
--- /dev/null
+++ b/src/arch/arm/include/armv7.h
@@ -0,0 +1,76 @@
+/*
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ * Aneesh V <aneesh@ti.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+#ifndef ARMV7_H
+#define ARMV7_H
+#include <types.h>
+
+/* Cortex-A9 revisions */
+#define MIDR_CORTEX_A9_R0P1	0x410FC091
+#define MIDR_CORTEX_A9_R1P2	0x411FC092
+#define MIDR_CORTEX_A9_R1P3	0x411FC093
+#define MIDR_CORTEX_A9_R2P10	0x412FC09A
+
+/* Cortex-A15 revisions */
+#define MIDR_CORTEX_A15_R0P0	0x410FC0F0
+
+/* CCSIDR */
+#define CCSIDR_LINE_SIZE_OFFSET		0
+#define CCSIDR_LINE_SIZE_MASK		0x7
+#define CCSIDR_ASSOCIATIVITY_OFFSET	3
+#define CCSIDR_ASSOCIATIVITY_MASK	(0x3FF << 3)
+#define CCSIDR_NUM_SETS_OFFSET		13
+#define CCSIDR_NUM_SETS_MASK		(0x7FFF << 13)
+
+/*
+ * Values for InD field in CSSELR
+ * Selects the type of cache
+ */
+#define ARMV7_CSSELR_IND_DATA_UNIFIED	0
+#define ARMV7_CSSELR_IND_INSTRUCTION	1
+
+/* Values for Ctype fields in CLIDR */
+#define ARMV7_CLIDR_CTYPE_NO_CACHE		0
+#define ARMV7_CLIDR_CTYPE_INSTRUCTION_ONLY	1
+#define ARMV7_CLIDR_CTYPE_DATA_ONLY		2
+#define ARMV7_CLIDR_CTYPE_INSTRUCTION_DATA	3
+#define ARMV7_CLIDR_CTYPE_UNIFIED		4
+
+/*
+ * CP15 Barrier instructions
+ * Please note that we have separate barrier instructions in ARMv7
+ * However, we use the CP15 based instructions because we use
+ * -march=armv5 in U-Boot
+ */
+#define CP15ISB	asm volatile ("mcr     p15, 0, %0, c7, c5, 4" : : "r" (0))
+#define CP15DSB	asm volatile ("mcr     p15, 0, %0, c7, c10, 4" : : "r" (0))
+#define CP15DMB	asm volatile ("mcr     p15, 0, %0, c7, c10, 5" : : "r" (0))
+
+void v7_outer_cache_enable(void);
+void v7_outer_cache_disable(void);
+void v7_outer_cache_flush_all(void);
+void v7_outer_cache_inval_all(void);
+void v7_outer_cache_flush_range(u32 start, u32 end);
+void v7_outer_cache_inval_range(u32 start, u32 end);
+
+#endif
diff --git a/src/arch/arm/include/armv7/arch/arch_io.h b/src/arch/arm/include/armv7/arch/arch_io.h
new file mode 100644
index 0000000000..360fa6425a
--- /dev/null
+++ b/src/arch/arm/include/armv7/arch/arch_io.h
@@ -0,0 +1,68 @@
+/*
+ * Originally imported from linux/include/asm-arm/io.h. This file has changed
+ * substantially since then.
+ *
+ *  Copyright 2013 Google Inc.
+ *  Copyright (C) 1996-2000 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Modifications:
+ *  08-Apr-2013	G	Replaced several macros with inlines for type safety.
+ *  16-Sep-1996	RMK	Inlined the inx/outx functions & optimised for both
+ *			constant addresses and variable addresses.
+ *  04-Dec-1997	RMK	Moved a lot of this stuff to the new architecture
+ *			specific IO header files.
+ *  27-Mar-1999	PJB	Second parameter of memcpy_toio is const..
+ *  04-Apr-1999	PJB	Added check_signature.
+ *  12-Dec-1999	RMK	More cleanups
+ *  18-Jun-2000 RMK	Removed virt_to_* and friends definitions
+ */
+#ifndef __ASM_ARM_ARCH_IO_H
+#define __ASM_ARM_ARCH_IO_H
+
+#include <arch/cache.h>		/* for dmb() */
+#include <stdint.h>
+
+static inline uint8_t read8(const void *addr)
+{
+	dmb();
+	return *(volatile uint8_t *)addr;
+}
+
+static inline uint16_t read16(const void *addr)
+{
+	dmb();
+	return *(volatile uint16_t *)addr;
+}
+
+static inline uint32_t read32(const void *addr)
+{
+	dmb();
+	return *(volatile uint32_t *)addr;
+}
+
+static inline void write8(uint8_t val, void *addr)
+{
+	dmb();
+	*(volatile uint8_t *)addr = val;
+	dmb();
+}
+
+static inline void write16(uint16_t val, void *addr)
+{
+	dmb();
+	*(volatile uint16_t *)addr = val;
+	dmb();
+}
+
+static inline void write32(uint32_t val, void *addr)
+{
+	dmb();
+	*(volatile uint32_t *)addr = val;
+	dmb();
+}
+
+#endif	/* __ASM_ARM_ARCH_IO_H */
diff --git a/src/arch/arm/include/armv7/arch/cache.h b/src/arch/arm/include/armv7/arch/cache.h
new file mode 100644
index 0000000000..ffdb55a706
--- /dev/null
+++ b/src/arch/arm/include/armv7/arch/cache.h
@@ -0,0 +1,341 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2013 Google Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * cache.h: Cache maintenance API for ARM
+ */
+
+#ifndef ARM_CACHE_H
+#define ARM_CACHE_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+/* SCTLR bits */
+#define SCTLR_M		(1 << 0)	/* MMU enable			*/
+#define SCTLR_A		(1 << 1)	/* Alignment check enable	*/
+#define SCTLR_C		(1 << 2)	/* Data/unified cache enable	*/
+/* Bits 4:3 are reserved */
+#define SCTLR_CP15BEN	(1 << 5)	/* CP15 barrier enable		*/
+/* Bit 6 is reserved */
+#define SCTLR_B		(1 << 7)	/* Endianness			*/
+/* Bits 9:8 */
+#define SCTLR_SW	(1 << 10)	/* SWP and SWPB enable		*/
+#define SCTLR_Z		(1 << 11)	/* Branch prediction enable	*/
+#define SCTLR_I		(1 << 12)	/* Instruction cache enable	*/
+#define SCTLR_V		(1 << 13)	/* Low/high exception vectors 	*/
+#define SCTLR_RR  	(1 << 14)	/* Round Robin select		*/
+/* Bits 16:15 are reserved */
+#define SCTLR_HA	(1 << 17)	/* Hardware Access flag enable	*/
+/* Bit 18 is reserved */
+/* Bits 20:19 reserved virtualization not supported */
+#define SCTLR_WXN	(1 << 19)	/* Write permission implies XN	*/
+#define SCTLR_UWXN	(1 << 20)	/* Unprivileged write permission
+					   implies PL1 XN		*/
+#define SCTLR_FI	(1 << 21)	/* Fast interrupt config enable	*/
+#define SCTLR_U		(1 << 22)	/* Unaligned access behavior	*/
+#define SCTLR_VE	(1 << 24)	/* Interrupt vectors enable	*/
+#define SCTLR_EE	(1 << 25)	/* Exception endianness		*/
+/* Bit 26 is reserved */
+#define SCTLR_NMFI	(1 << 27)	/* Non-maskable FIQ support	*/
+#define SCTLR_TRE	(1 << 28)	/* TEX remap enable		*/
+#define SCTLR_AFE	(1 << 29)	/* Access flag enable		*/
+#define SCTLR_TE	(1 << 30)	/* Thumb exception enable	*/
+/* Bit 31 is reserved */
+
+/*
+ * Sync primitives
+ */
+
+/* data memory barrier */
+static inline void dmb(void)
+{
+	asm volatile ("dmb" : : : "memory");
+}
+
+/* data sync barrier */
+static inline void dsb(void)
+{
+	asm volatile ("dsb" : : : "memory");
+}
+
+/* instruction sync barrier */
+static inline void isb(void)
+{
+	asm volatile ("isb" : : : "memory");
+}
+
+/*
+ * Low-level TLB maintenance operations
+ */
+
+/* invalidate entire data TLB */
+static inline void dtlbiall(void)
+{
+	asm volatile ("mcr p15, 0, %0, c8, c6, 0" : : "r" (0) : "memory");
+}
+
+/* invalidate entire instruction TLB */
+static inline void itlbiall(void)
+{
+	asm volatile ("mcr p15, 0, %0, c8, c5, 0" : : "r" (0));
+}
+
+/* invalidate entire unified TLB */
+static inline void tlbiall(void)
+{
+	asm volatile ("mcr p15, 0, %0, c8, c7, 0" : : "r" (0) : "memory");
+}
+
+/* invalidate unified TLB by MVA, all ASID */
+static inline void tlbimvaa(unsigned long mva)
+{
+	asm volatile ("mcr p15, 0, %0, c8, c7, 3" : : "r" (mva) : "memory");
+}
+
+/* write data access control register (DACR) */
+static inline void write_dacr(uint32_t val)
+{
+	asm volatile ("mcr p15, 0, %0, c3, c0, 0" : : "r" (val));
+}
+
+/* write translation table base register 0 (TTBR0) */
+static inline void write_ttbr0(uint32_t val)
+{
+	asm volatile ("mcr p15, 0, %0, c2, c0, 0" : : "r" (val) : "memory");
+}
+
+/* read translation table base control register (TTBCR) */
+static inline uint32_t read_ttbcr(void)
+{
+	uint32_t val = 0;
+	asm volatile ("mrc p15, 0, %0, c2, c0, 2" : "=r" (val));
+	return val;
+}
+
+/* write translation table base control register (TTBCR) */
+static inline void write_ttbcr(uint32_t val)
+{
+	asm volatile ("mcr p15, 0, %0, c2, c0, 2" : : "r" (val) : "memory");
+}
+
+/*
+ * Low-level cache maintenance operations
+ */
+
+/* branch predictor invalidate all */
+static inline void bpiall(void)
+{
+	asm volatile ("mcr p15, 0, %0, c7, c5, 6" : : "r" (0));
+}
+
+/* data cache clean and invalidate by MVA to PoC */
+static inline void dccimvac(unsigned long mva)
+{
+	asm volatile ("mcr p15, 0, %0, c7, c14, 1" : : "r" (mva) : "memory");
+}
+
+/* data cache invalidate by set/way */
+static inline void dccisw(uint32_t val)
+{
+	asm volatile ("mcr p15, 0, %0, c7, c14, 2" : : "r" (val) : "memory");
+}
+
+/* data cache clean by MVA to PoC */
+static inline void dccmvac(unsigned long mva)
+{
+	asm volatile ("mcr p15, 0, %0, c7, c10, 1" : : "r" (mva) : "memory");
+}
+
+/* data cache clean by set/way */
+static inline void dccsw(uint32_t val)
+{
+	asm volatile ("mcr p15, 0, %0, c7, c10, 2" : : "r" (val) : "memory");
+}
+
+/* data cache invalidate by MVA to PoC */
+static inline void dcimvac(unsigned long mva)
+{
+	asm volatile ("mcr p15, 0, %0, c7, c6, 1" : : "r" (mva) : "memory");
+}
+
+/* data cache invalidate by set/way */
+static inline void dcisw(uint32_t val)
+{
+	asm volatile ("mcr p15, 0, %0, c7, c6, 2" : : "r" (val) : "memory");
+}
+
+/* instruction cache invalidate all by PoU */
+static inline void iciallu(void)
+{
+	asm volatile ("mcr p15, 0, %0, c7, c5, 0" : : "r" (0));
+}
+
+/*
+ * Cache co-processor (CP15) access functions
+ */
+
+/* read cache level ID register (CLIDR) */
+static inline uint32_t read_clidr(void)
+{
+	uint32_t val = 0;
+	asm volatile ("mrc p15, 1, %0, c0, c0, 1" : "=r" (val));
+	return val;
+}
+
+/* read cache size ID register register (CCSIDR) */
+static inline uint32_t read_ccsidr(void)
+{
+	uint32_t val = 0;
+	asm volatile ("mrc p15, 1, %0, c0, c0, 0" : "=r" (val));
+	return val;
+}
+
+/* read cache size selection register (CSSELR) */
+static inline uint32_t read_csselr(void)
+{
+	uint32_t val = 0;
+	asm volatile ("mrc p15, 2, %0, c0, c0, 0" : "=r" (val));
+	return val;
+}
+
+/* write to cache size selection register (CSSELR) */
+static inline void write_csselr(uint32_t val)
+{
+	/*
+	 * Bits [3:1] - Cache level + 1 (0b000 = L1, 0b110 = L7, 0b111 is rsvd)
+	 * Bit 0 - 0 = data or unified cache, 1 = instruction cache
+	 */
+	asm volatile ("mcr p15, 2, %0, c0, c0, 0" : : "r" (val));
+	isb();	/* ISB to sync the change to CCSIDR */
+}
+
+/* read L2 control register (L2CTLR) */
+static inline uint32_t read_l2ctlr(void)
+{
+	uint32_t val = 0;
+	asm volatile ("mrc p15, 1, %0, c9, c0, 2" : "=r" (val));
+	return val;
+}
+
+/* write L2 control register (L2CTLR) */
+static inline void write_l2ctlr(uint32_t val)
+{
+	/*
+	 * Note: L2CTLR can only be written when the L2 memory system
+	 * is idle, ie before the MMU is enabled.
+	 */
+	asm volatile("mcr p15, 1, %0, c9, c0, 2" : : "r" (val) : "memory" );
+	isb();
+}
+
+/* read L2 Auxiliary Control Register (L2ACTLR) */
+static inline uint32_t read_l2actlr(void)
+{
+	uint32_t val = 0;
+	asm volatile ("mrc p15, 1, %0, c15, c0, 0" : "=r" (val));
+	return val;
+}
+
+/* write L2 Auxiliary Control Register (L2ACTLR) */
+static inline void write_l2actlr(uint32_t val)
+{
+	asm volatile ("mcr p15, 1, %0, c15, c0, 0" : : "r" (val) : "memory" );
+	isb();
+}
+
+/* read system control register (SCTLR) */
+static inline uint32_t read_sctlr(void)
+{
+	uint32_t val;
+	asm volatile ("mrc p15, 0, %0, c1, c0, 0" : "=r" (val));
+	return val;
+}
+
+/* write system control register (SCTLR) */
+static inline void write_sctlr(uint32_t val)
+{
+	asm volatile ("mcr p15, 0, %0, c1, c0, 0" : : "r" (val) : "cc");
+	isb();
+}
+
+/*
+ * Cache maintenance API
+ */
+
+/* dcache clean and invalidate all (on current level given by CCSELR) */
+void dcache_clean_invalidate_all(void);
+
+/* dcache clean by modified virtual address to PoC */
+void dcache_clean_by_mva(void const *addr, size_t len);
+
+/* dcache clean and invalidate by modified virtual address to PoC */
+void dcache_clean_invalidate_by_mva(void const *addr, size_t len);
+
+/* dcache invalidate by modified virtual address to PoC */
+void dcache_invalidate_by_mva(void const *addr, size_t len);
+
+void dcache_clean_all(void);
+
+/* dcache invalidate all (on current level given by CCSELR) */
+void dcache_invalidate_all(void);
+
+/* dcache and MMU disable */
+void dcache_mmu_disable(void);
+
+/* dcache and MMU enable */
+void dcache_mmu_enable(void);
+
+/* icache invalidate all (on current level given by CSSELR) */
+void icache_invalidate_all(void);
+
+/* tlb invalidate all */
+void tlb_invalidate_all(void);
+
+/*
+ * Generalized setup/init functions
+ */
+
+/* invalidate all caches on ARM */
+void arm_invalidate_caches(void);
+
+/* mmu initialization (set page table address, set permissions, etc) */
+void mmu_init(void);
+
+enum dcache_policy {
+	DCACHE_OFF,
+	DCACHE_WRITEBACK,
+	DCACHE_WRITETHROUGH,
+};
+
+/* disable the mmu for a range. Primarily useful to lock out address 0. */
+void mmu_disable_range(unsigned long start_mb, unsigned long size_mb);
+/* mmu range configuration (set dcache policy) */
+void mmu_config_range(unsigned long start_mb, unsigned long size_mb,
+						enum dcache_policy policy);
+
+#endif /* ARM_CACHE_H */
diff --git a/src/arch/arm/include/armv7/arch/cpu.h b/src/arch/arm/include/armv7/arch/cpu.h
new file mode 100644
index 0000000000..52cc8a3f50
--- /dev/null
+++ b/src/arch/arm/include/armv7/arch/cpu.h
@@ -0,0 +1,108 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2012 Google Inc.
+ *
+ * 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 __ARCH_CPU_H__
+#define __ARCH_CPU_H__
+
+#define asmlinkage
+
+#if !defined(__PRE_RAM__)
+#include <device/device.h>
+
+struct cpu_driver {
+	struct device_operations *ops;
+	struct cpu_device_id *id_table;
+};
+
+struct thread;
+
+struct cpu_info {
+	device_t cpu;
+	unsigned long index;
+#if CONFIG_COOP_MULTITASKING
+	struct thread *thread;
+#endif
+};
+
+struct cpuinfo_arm {
+        uint8_t    arm;            /* CPU family */
+        uint8_t    arm_vendor;     /* CPU vendor */
+        uint8_t    arm_model;
+};
+
+#endif
+
+/* Primitives for CPU and MP cores. */
+
+/* read Main Id register (MIDR) */
+inline static uint32_t read_midr(void)
+{
+	uint32_t value;
+	asm volatile ("mrc p15, 0, %0, c0, c0, 0" : "=r"(value));
+	return value;
+}
+
+/* read Multiprocessor Affinity Register (MPIDR) */
+inline static uint32_t read_mpidr(void)
+{
+	uint32_t value;
+	asm volatile ("mrc p15, 0, %0, c0, c0, 5" : "=r"(value));
+	return value;
+}
+
+/* read Auxiliary Control Register (ACTLR) */
+inline static uint32_t read_actlr(void)
+{
+	uint32_t val = 0;
+	asm volatile ("mrc p15, 0, %0, c1, c0, 1" : "=r"(val));
+	return val;
+}
+
+/* write Auxiliary Control Register (ACTLR) */
+inline static void write_actlr(uint32_t val)
+{
+	asm volatile ("mcr p15, 0, %0, c1, c0, 1" : : "r" (val));
+}
+
+/* wait for interrupt. */
+inline static void wfi(void)
+{
+	asm volatile ("wfi" : : : "memory");
+}
+
+/* wait for event. */
+inline static void wfe(void)
+{
+	asm volatile ("wfe");
+}
+
+/* set event (to bring up cores in WFE state). */
+inline static void sev(void)
+{
+	asm volatile ("sev");
+}
+
+/* puts CPU into System mode and disable interrupts. */
+inline static void set_system_mode(void)
+{
+	asm volatile("msr cpsr_c, %0" :: "r"(0x1f | 0xc0));
+}
+
+struct cpu_info *cpu_info(void);
+#endif /* __ARCH_CPU_H__ */
diff --git a/src/arch/arm/include/armv7/arch/types.h b/src/arch/arm/include/armv7/arch/types.h
new file mode 100644
index 0000000000..be7e76c5ab
--- /dev/null
+++ b/src/arch/arm/include/armv7/arch/types.h
@@ -0,0 +1,46 @@
+#ifndef __ASM_ARM_TYPES_H
+#define __ASM_ARM_TYPES_H
+
+typedef unsigned short umode_t;
+
+/*
+ * __xx is ok: it doesn't pollute the POSIX namespace. Use these in the
+ * header files exported to user space
+ */
+
+typedef __signed__ char __s8;
+typedef unsigned char __u8;
+
+typedef __signed__ short __s16;
+typedef unsigned short __u16;
+
+typedef __signed__ int __s32;
+typedef unsigned int __u32;
+
+#if defined(__GNUC__)
+__extension__ typedef __signed__ long long __s64;
+__extension__ typedef unsigned long long __u64;
+#endif
+
+typedef signed char s8;
+typedef unsigned char u8;
+
+typedef signed short s16;
+typedef unsigned short u16;
+
+typedef signed int s32;
+typedef unsigned int u32;
+
+typedef signed long long s64;
+typedef unsigned long long u64;
+
+#define BITS_PER_LONG 32
+
+/* Dma addresses are 32-bits wide.  */
+
+typedef u32 dma_addr_t;
+
+typedef unsigned long phys_addr_t;
+typedef unsigned long phys_size_t;
+
+#endif
diff --git a/src/arch/arm/include/assembler.h b/src/arch/arm/include/assembler.h
new file mode 100644
index 0000000000..10363c4e4e
--- /dev/null
+++ b/src/arch/arm/include/assembler.h
@@ -0,0 +1,62 @@
+/*
+ *  arch/arm/include/asm/assembler.h
+ *
+ *  Copyright (C) 1996-2000 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ *  This file contains arm architecture specific defines
+ *  for the different processors.
+ *
+ *  Do not include any C declarations in this file - it is included by
+ *  assembler source.
+ */
+
+/*
+ * Endian independent macros for shifting bytes within registers.
+ */
+#ifndef __ARMEB__
+#define pull		lsr
+#define push		lsl
+#define get_byte_0	lsl #0
+#define get_byte_1	lsr #8
+#define get_byte_2	lsr #16
+#define get_byte_3	lsr #24
+#define put_byte_0	lsl #0
+#define put_byte_1	lsl #8
+#define put_byte_2	lsl #16
+#define put_byte_3	lsl #24
+#else
+#define pull		lsl
+#define push		lsr
+#define get_byte_0	lsr #24
+#define get_byte_1	lsr #16
+#define get_byte_2	lsr #8
+#define get_byte_3      lsl #0
+#define put_byte_0	lsl #24
+#define put_byte_1	lsl #16
+#define put_byte_2	lsl #8
+#define put_byte_3      lsl #0
+#endif
+
+/*
+ * Data preload for architectures that support it
+ */
+#if defined(__ARM_ARCH_5E__) || defined(__ARM_ARCH_5TE__) || \
+	defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || \
+	defined(__ARM_ARCH_6T2__) || defined(__ARM_ARCH_6Z__) || \
+	defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_7A__) || \
+	defined(__ARM_ARCH_7R__)
+#define PLD(code...)	code
+#else
+#define PLD(code...)
+#endif
+
+/*
+ * Cache aligned
+ */
+#define CALGN(code...) code
+
+#define W(instr)	instr
diff --git a/src/arch/arm/include/bootblock_common.h b/src/arch/arm/include/bootblock_common.h
new file mode 100644
index 0000000000..034a12bc36
--- /dev/null
+++ b/src/arch/arm/include/bootblock_common.h
@@ -0,0 +1,15 @@
+#if CONFIG_CPU_HAS_BOOTBLOCK_INIT
+void bootblock_cpu_init(void);
+#else
+static void __attribute__((unused)) bootblock_cpu_init(void)
+{
+}
+#endif
+
+#if CONFIG_MAINBOARD_HAS_BOOTBLOCK_INIT
+void bootblock_mainboard_init(void);
+#else
+static void __attribute__((unused)) bootblock_mainboard_init(void)
+{
+}
+#endif
diff --git a/src/arch/arm/include/clocks.h b/src/arch/arm/include/clocks.h
new file mode 100644
index 0000000000..58cf838621
--- /dev/null
+++ b/src/arch/arm/include/clocks.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/* Standard clock speeds */
+
+/*
+ * We define some commonly-used clock speeds to avoid error since long
+ * numbers are hard to read.
+ *
+ * The format of the label is
+ * CLK_x_yU where:
+ *	x is the integer speed
+ *	y is the fractional part which can be omitted if 0
+ *	U is the units (blank for Hz, K or M for KHz and MHz)
+ *
+ * Please order the items by increasing Hz
+ */
+enum {
+	CLK_32768	= 32768,
+	CLK_20M		= 20000000,
+	CLK_24M		= 24000000,
+	CLK_144M	= 144000000,
+	CLK_216M	= 216000000,
+	CLK_300M	= 300000000,
+};
diff --git a/src/arch/arm/include/smp/spinlock.h b/src/arch/arm/include/smp/spinlock.h
new file mode 100644
index 0000000000..1dc397c19c
--- /dev/null
+++ b/src/arch/arm/include/smp/spinlock.h
@@ -0,0 +1,52 @@
+#ifndef ARCH_SMP_SPINLOCK_H
+#define ARCH_SMP_SPINLOCK_H
+
+/* FIXME: implement this for ARM */
+#error "implement this for ARM"
+#if 0
+/*
+ * Your basic SMP spinlocks, allowing only a single CPU anywhere
+ */
+
+typedef struct {
+	volatile unsigned int lock;
+} spinlock_t;
+
+
+#define SPIN_LOCK_UNLOCKED (spinlock_t) { 1 }
+#define DECLARE_SPIN_LOCK(x) static spinlock_t x = SPIN_LOCK_UNLOCKED;
+
+#define barrier() __asm__ __volatile__("": : :"memory")
+#define spin_is_locked(x)	(*(volatile char *)(&(x)->lock) != 0)
+#define spin_unlock_wait(x)	do { barrier(); } while(spin_is_locked(x))
+
+static inline __attribute__((always_inline)) void spin_lock(spinlock_t *lock)
+{
+	unsigned long tmp;
+	__asm__ __volatile__ (
+		"1:	ldrex	%0, [%1]\n"
+		"	teq	%0, #0\n"
+		"	strexeq	%0, %2, [%1]\n"
+		"	teqeq	%0, #0\n"
+		"	bne	1b\n"
+		: "=&r" (tmp)
+		: "r" (&lock->lock), "r" (1)
+		: "cc"
+	);
+	barrier();
+}
+
+static inline __attribute__((always_inline)) void spin_unlock(spinlock_t *lock)
+{
+	__asm__ __volatile__(
+		"	str	%1, [%0]\n"
+		:
+		: "r" (&lock->lock), "r" (0)
+		: "cc"
+	);
+}
+
+#define cpu_relax() barrier()
+
+#endif
+#endif /* ARCH_SMP_SPINLOCK_H */
diff --git a/src/arch/arm/include/stdint.h b/src/arch/arm/include/stdint.h
new file mode 100644
index 0000000000..9d41e6359a
--- /dev/null
+++ b/src/arch/arm/include/stdint.h
@@ -0,0 +1,93 @@
+#ifndef ARM_STDINT_H
+#define ARM_STDINT_H
+
+#if defined(__GNUC__)
+#define __HAVE_LONG_LONG__ 1
+#else
+#define __HAVE_LONG_LONG__ 0
+#endif
+
+/* Exact integral types */
+typedef unsigned char      uint8_t;
+typedef signed char        int8_t;
+
+typedef unsigned short     uint16_t;
+typedef signed short       int16_t;
+
+typedef unsigned int       uint32_t;
+typedef signed int         int32_t;
+
+#if __HAVE_LONG_LONG__
+typedef unsigned long long uint64_t;
+typedef signed long long   int64_t;
+#endif
+
+/* Small types */
+typedef unsigned char      uint_least8_t;
+typedef signed char        int_least8_t;
+
+typedef unsigned short     uint_least16_t;
+typedef signed short       int_least16_t;
+
+typedef unsigned int       uint_least32_t;
+typedef signed int         int_least32_t;
+
+#if __HAVE_LONG_LONG__
+typedef unsigned long long uint_least64_t;
+typedef signed long long   int_least64_t;
+#endif
+
+/* Fast Types */
+typedef unsigned char      uint_fast8_t;
+typedef signed char        int_fast8_t;
+
+typedef unsigned int       uint_fast16_t;
+typedef signed int         int_fast16_t;
+
+typedef unsigned int       uint_fast32_t;
+typedef signed int         int_fast32_t;
+
+#if __HAVE_LONG_LONG__
+typedef unsigned long long uint_fast64_t;
+typedef signed long long   int_fast64_t;
+#endif
+
+/* Types for `void *' pointers.  */
+typedef int                intptr_t;
+typedef unsigned int       uintptr_t;
+
+/* Largest integral types */
+#if __HAVE_LONG_LONG__
+typedef long long int      intmax_t;
+typedef unsigned long long uintmax_t;
+#else
+typedef long int           intmax_t;
+typedef unsigned long int  uintmax_t;
+#endif
+
+typedef uint8_t u8;
+typedef uint16_t u16;
+typedef uint32_t u32;
+#if __HAVE_LONG_LONG__
+typedef uint64_t u64;
+#endif
+typedef int8_t s8;
+typedef int16_t s16;
+typedef int32_t s32;
+
+#ifndef UINT32_MAX
+#define UINT32_MAX (4294967295U)
+#endif
+#ifndef UINT64_MAX
+# define UINT64_MAX (18446744073709551615ULL)
+#endif
+#ifndef UINT64_C
+#define UINT64_C(c) c ## ULL
+#endif
+#ifndef PRIu64
+#define PRIu64 "llu"
+#endif
+
+#undef __HAVE_LONG_LONG__
+
+#endif /* ARM_STDINT_H */
diff --git a/src/arch/arm/include/utils.h b/src/arch/arm/include/utils.h
new file mode 100644
index 0000000000..828b86cb36
--- /dev/null
+++ b/src/arch/arm/include/utils.h
@@ -0,0 +1,56 @@
+/*
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ * Aneesh V <aneesh@ti.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+#ifndef _UTILS_H_
+#define _UTILS_H_
+
+static inline s32 log_2_n_round_up(u32 n)
+{
+	s32 log2n = -1;
+	u32 temp = n;
+
+	while (temp) {
+		log2n++;
+		temp >>= 1;
+	}
+
+	if (n & (n - 1))
+		return log2n + 1; /* not power of 2 - round up */
+	else
+		return log2n; /* power of 2 */
+}
+
+static inline s32 log_2_n_round_down(u32 n)
+{
+	s32 log2n = -1;
+	u32 temp = n;
+
+	while (temp) {
+		log2n++;
+		temp >>= 1;
+	}
+
+	return log2n;
+}
+
+#endif