ARMV7: Add basic support for TI OMAP4
authorSteve Sakoman <steve@sakoman.com>
Tue, 8 Jun 2010 20:07:46 +0000 (13:07 -0700)
committerSandeep Paulraj <s-paulraj@ti.com>
Tue, 6 Jul 2010 00:00:00 +0000 (20:00 -0400)
This patch adds minimum support for OMAP4. Code which can be shared
between OMAP3 and OMAP4 is placed in arch/arm/cpu/armv7/omap-common

Signed-off-by: Aneesh V <aneesh@ti.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
13 files changed:
Makefile
arch/arm/cpu/armv7/omap-common/Makefile [new file with mode: 0644]
arch/arm/cpu/armv7/omap-common/config.mk [new file with mode: 0644]
arch/arm/cpu/armv7/omap-common/reset.S [moved from arch/arm/cpu/armv7/omap3/reset.S with 100% similarity]
arch/arm/cpu/armv7/omap-common/timer.c [moved from arch/arm/cpu/armv7/omap3/timer.c with 96% similarity]
arch/arm/cpu/armv7/omap3/Makefile
arch/arm/cpu/armv7/omap4/Makefile [new file with mode: 0644]
arch/arm/cpu/armv7/omap4/board.c [new file with mode: 0644]
arch/arm/cpu/armv7/omap4/lowlevel_init.S [new file with mode: 0644]
arch/arm/cpu/armv7/omap4/sys_info.c [new file with mode: 0644]
arch/arm/include/asm/arch-omap4/cpu.h [new file with mode: 0644]
arch/arm/include/asm/arch-omap4/omap4.h [new file with mode: 0644]
arch/arm/include/asm/arch-omap4/sys_proto.h [new file with mode: 0644]

index 1d87f37..5780ee1 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -245,6 +245,13 @@ LIBS += lib/libfdt/libfdt.a
 LIBS += api/libapi.a
 LIBS += post/libpost.a
 
+ifeq ($(SOC),omap3)
+LIBS += $(CPUDIR)/omap-common/libomap-common.a
+endif
+ifeq ($(SOC),omap4)
+LIBS += $(CPUDIR)/omap-common/libomap-common.a
+endif
+
 LIBS := $(addprefix $(obj),$(LIBS))
 .PHONY : $(LIBS) $(TIMESTAMP_FILE) $(VERSION_FILE)
 
diff --git a/arch/arm/cpu/armv7/omap-common/Makefile b/arch/arm/cpu/armv7/omap-common/Makefile
new file mode 100644 (file)
index 0000000..3a4a304
--- /dev/null
@@ -0,0 +1,46 @@
+#
+# (C) Copyright 2000-2003
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# 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
+#
+
+include $(TOPDIR)/config.mk
+
+LIB    = $(obj)libomap-common.a
+
+SOBJS  := reset.o
+COBJS  := timer.o
+
+SRCS   := $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS   := $(addprefix $(obj),$(SOBJS) $(COBJS))
+
+all:   $(obj).depend $(LIB)
+
+$(LIB):        $(OBJS)
+       $(AR) $(ARFLAGS) $@ $(OBJS)
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/arch/arm/cpu/armv7/omap-common/config.mk b/arch/arm/cpu/armv7/omap-common/config.mk
new file mode 100644 (file)
index 0000000..49ac9c7
--- /dev/null
@@ -0,0 +1,33 @@
+#
+# (C) Copyright 2002
+# Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+PLATFORM_RELFLAGS += -fno-common -ffixed-r8 -msoft-float
+
+# Make ARMv5 to allow more compilers to work, even though its v7a.
+PLATFORM_CPPFLAGS += -march=armv5
+# =========================================================================
+#
+# Supply options according to compiler version
+#
+# =========================================================================
+PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,\
+                   $(call cc-option,-malignment-traps,))
similarity index 96%
rename from arch/arm/cpu/armv7/omap3/timer.c
rename to arch/arm/cpu/armv7/omap-common/timer.c
index 401bfe6..69e285f 100644 (file)
@@ -84,6 +84,11 @@ void set_timer(ulong t)
 /* delay x useconds */
 void __udelay(unsigned long usec)
 {
+#if defined(CONFIG_OMAP44XX)
+       /* TODO temporary hack until OMAP4 clock setup routines are present */
+       if (usec > 1000)
+               usec = usec/1000;
+#endif
        long tmo = usec * (TIMER_CLOCK / 1000) / 1000;
        unsigned long now, last = readl(&timer_base->tcrr);
 
index 7d63c6b..79ae267 100644 (file)
@@ -27,7 +27,6 @@ LIB   =  $(obj)lib$(SOC).a
 
 SOBJS  := lowlevel_init.o
 SOBJS  += cache.o
-SOBJS  += reset.o
 
 COBJS  += board.o
 COBJS  += clock.o
@@ -35,7 +34,6 @@ COBJS += gpio.o
 COBJS  += mem.o
 COBJS  += syslib.o
 COBJS  += sys_info.o
-COBJS  += timer.o
 
 COBJS-$(CONFIG_EMIF4)  += emif4.o
 COBJS-$(CONFIG_SDRC)   += sdrc.o
diff --git a/arch/arm/cpu/armv7/omap4/Makefile b/arch/arm/cpu/armv7/omap4/Makefile
new file mode 100644 (file)
index 0000000..ecf64f9
--- /dev/null
@@ -0,0 +1,48 @@
+#
+# (C) Copyright 2000-2010
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# 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
+#
+
+include $(TOPDIR)/config.mk
+
+LIB    =  $(obj)lib$(SOC).a
+
+SOBJS  += lowlevel_init.o
+
+COBJS  += board.o
+COBJS  += sys_info.o
+
+SRCS   := $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS   := $(addprefix $(obj),$(COBJS) $(SOBJS))
+
+all:    $(obj).depend $(LIB)
+
+$(LIB):        $(OBJS)
+       $(AR) $(ARFLAGS) $@ $(OBJS)
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/arch/arm/cpu/armv7/omap4/board.c b/arch/arm/cpu/armv7/omap4/board.c
new file mode 100644 (file)
index 0000000..5bf7173
--- /dev/null
@@ -0,0 +1,90 @@
+/*
+ *
+ * Common functions for OMAP4 based boards
+ *
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ *
+ * Author :
+ *     Aneesh V        <aneesh@ti.com>
+ *     Steve Sakoman   <steve@sakoman.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
+ */
+#include <common.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/sys_proto.h>
+
+/*
+ * Routine: s_init
+ * Description: Does early system init of muxing and clocks.
+ *              - Called path is with SRAM stack.
+ */
+void s_init(void)
+{
+       watchdog_init();
+}
+
+/*
+ * Routine: wait_for_command_complete
+ * Description: Wait for posting to finish on watchdog
+ */
+void wait_for_command_complete(struct watchdog *wd_base)
+{
+       int pending = 1;
+       do {
+               pending = readl(&wd_base->wwps);
+       } while (pending);
+}
+
+/*
+ * Routine: watchdog_init
+ * Description: Shut down watch dogs
+ */
+void watchdog_init(void)
+{
+       struct watchdog *wd2_base = (struct watchdog *)WDT2_BASE;
+
+       writel(WD_UNLOCK1, &wd2_base->wspr);
+       wait_for_command_complete(wd2_base);
+       writel(WD_UNLOCK2, &wd2_base->wspr);
+}
+
+/*
+ * Routine: dram_init
+ * Description: sets uboots idea of sdram size
+ */
+int dram_init(void)
+{
+       DECLARE_GLOBAL_DATA_PTR;
+
+       gd->bd->bi_dram[0].start = 0x80000000;
+       gd->bd->bi_dram[0].size = 512 << 20;
+       return 0;
+}
+
+/*
+ * Print board information
+ */
+int checkboard(void)
+{
+       puts(sysinfo.board_string);
+       return 0;
+}
+
diff --git a/arch/arm/cpu/armv7/omap4/lowlevel_init.S b/arch/arm/cpu/armv7/omap4/lowlevel_init.S
new file mode 100644 (file)
index 0000000..9a181eb
--- /dev/null
@@ -0,0 +1,48 @@
+/*
+ * Board specific setup info
+ *
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ *
+ * Author :
+ *     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
+ */
+
+#include <asm/arch/omap4.h>
+
+.globl lowlevel_init
+lowlevel_init:
+       /*
+        * Setup a temporary stack
+        */
+       ldr     sp, =LOW_LEVEL_SRAM_STACK
+
+       /*
+        * Save the old lr(passed in ip) and the current lr to stack
+        */
+       push    {ip, lr}
+
+       /*
+        * go setup pll, mux, memory
+        */
+       bl      s_init
+       pop     {ip, pc}
+
diff --git a/arch/arm/cpu/armv7/omap4/sys_info.c b/arch/arm/cpu/armv7/omap4/sys_info.c
new file mode 100644 (file)
index 0000000..3b73191
--- /dev/null
@@ -0,0 +1,54 @@
+/*
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ *
+ * Author :
+ *     Aneesh V        <aneesh@ti.com>
+ *     Steve Sakoman   <steve@sakoman.com>
+ *
+ * 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
+ */
+
+#include <common.h>
+#include <asm/arch/sys_proto.h>
+
+/*
+ *  get_device_type(): tell if GP/HS/EMU/TST
+ */
+u32 get_device_type(void)
+{
+       return 0;
+}
+
+/*
+ * get_board_rev() - get board revision
+ */
+u32 get_board_rev(void)
+{
+       return 0x20;
+}
+
+/*
+ * Print CPU information
+ */
+int print_cpuinfo(void)
+{
+
+       puts("CPU  : OMAP4430\n");
+
+       return 0;
+}
+
diff --git a/arch/arm/include/asm/arch-omap4/cpu.h b/arch/arm/include/asm/arch-omap4/cpu.h
new file mode 100644 (file)
index 0000000..7d8aa20
--- /dev/null
@@ -0,0 +1,94 @@
+/*
+ * (C) Copyright 2006-2010
+ * Texas Instruments, <www.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 _CPU_H
+#define _CPU_H
+
+#if !(defined(__KERNEL_STRICT_NAMES) || defined(__ASSEMBLY__))
+#include <asm/types.h>
+#endif /* !(__KERNEL_STRICT_NAMES || __ASSEMBLY__) */
+
+#ifndef __KERNEL_STRICT_NAMES
+#ifndef __ASSEMBLY__
+struct gptimer {
+       u32 tidr;               /* 0x00 r */
+       u8 res[0xc];
+       u32 tiocp_cfg;          /* 0x10 rw */
+       u32 tistat;             /* 0x14 r */
+       u32 tisr;               /* 0x18 rw */
+       u32 tier;               /* 0x1c rw */
+       u32 twer;               /* 0x20 rw */
+       u32 tclr;               /* 0x24 rw */
+       u32 tcrr;               /* 0x28 rw */
+       u32 tldr;               /* 0x2c rw */
+       u32 ttgr;               /* 0x30 rw */
+       u32 twpc;               /* 0x34 r */
+       u32 tmar;               /* 0x38 rw */
+       u32 tcar1;              /* 0x3c r */
+       u32 tcicr;              /* 0x40 rw */
+       u32 tcar2;              /* 0x44 r */
+};
+#endif /* __ASSEMBLY__ */
+#endif /* __KERNEL_STRICT_NAMES */
+
+/* enable sys_clk NO-prescale /1 */
+#define GPT_EN                 ((0x0 << 2) | (0x1 << 1) | (0x1 << 0))
+
+/* Watchdog */
+#ifndef __KERNEL_STRICT_NAMES
+#ifndef __ASSEMBLY__
+struct watchdog {
+       u8 res1[0x34];
+       u32 wwps;               /* 0x34 r */
+       u8 res2[0x10];
+       u32 wspr;               /* 0x48 rw */
+};
+#endif /* __ASSEMBLY__ */
+#endif /* __KERNEL_STRICT_NAMES */
+
+#define WD_UNLOCK1             0xAAAA
+#define WD_UNLOCK2             0x5555
+
+#define SYSCLKDIV_1            (0x1 << 6)
+#define SYSCLKDIV_2            (0x1 << 7)
+
+#define CLKSEL_GPT1            (0x1 << 0)
+
+#define EN_GPT1                        (0x1 << 0)
+#define EN_32KSYNC             (0x1 << 2)
+
+#define ST_WDT2                        (0x1 << 5)
+
+#define RESETDONE              (0x1 << 0)
+
+#define TCLR_ST                        (0x1 << 0)
+#define TCLR_AR                        (0x1 << 1)
+#define TCLR_PRE               (0x1 << 5)
+
+/* I2C base */
+#define I2C_BASE1              (OMAP44XX_L4_PER_BASE + 0x70000)
+#define I2C_BASE2              (OMAP44XX_L4_PER_BASE + 0x72000)
+#define I2C_BASE3              (OMAP44XX_L4_PER_BASE + 0x60000)
+
+#endif /* _CPU_H */
diff --git a/arch/arm/include/asm/arch-omap4/omap4.h b/arch/arm/include/asm/arch-omap4/omap4.h
new file mode 100644 (file)
index 0000000..d123d6a
--- /dev/null
@@ -0,0 +1,118 @@
+/*
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ *
+ * Authors:
+ *     Aneesh V <aneesh@ti.com>
+ *
+ * Derived from OMAP3 work by
+ *     Richard Woodruff <r-woodruff2@ti.com>
+ *     Syed Mohammed Khasim <x0khasim@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 _OMAP4_H_
+#define _OMAP4_H_
+
+#if !(defined(__KERNEL_STRICT_NAMES) || defined(__ASSEMBLY__))
+#include <asm/types.h>
+#endif /* !(__KERNEL_STRICT_NAMES || __ASSEMBLY__) */
+
+/*
+ * L4 Peripherals - L4 Wakeup and L4 Core now
+ */
+#define OMAP44XX_L4_CORE_BASE  0x4A000000
+#define OMAP44XX_L4_WKUP_BASE  0x4A300000
+#define OMAP44XX_L4_PER_BASE   0x48000000
+
+/* CONTROL */
+#define CTRL_BASE              (OMAP44XX_L4_CORE_BASE + 0x2000)
+
+/* UART */
+#define UART1_BASE             (OMAP44XX_L4_PER_BASE + 0x6a000)
+#define UART2_BASE             (OMAP44XX_L4_PER_BASE + 0x6c000)
+#define UART3_BASE             (OMAP44XX_L4_PER_BASE + 0x20000)
+
+/* General Purpose Timers */
+#define GPT1_BASE              (OMAP44XX_L4_WKUP_BASE + 0x18000)
+#define GPT2_BASE              (OMAP44XX_L4_PER_BASE  + 0x32000)
+#define GPT3_BASE              (OMAP44XX_L4_PER_BASE  + 0x34000)
+
+/* Watchdog Timer2 - MPU watchdog */
+#define WDT2_BASE              (OMAP44XX_L4_WKUP_BASE + 0x14000)
+
+/* 32KTIMER */
+#define SYNC_32KTIMER_BASE     (OMAP44XX_L4_WKUP_BASE + 0x4000)
+
+/* GPMC */
+#define GPMC_BASE      0x50000000
+
+/*
+ * Hardware Register Details
+ */
+
+/* Watchdog Timer */
+#define WD_UNLOCK1             0xAAAA
+#define WD_UNLOCK2             0x5555
+
+/* GP Timer */
+#define TCLR_ST                        (0x1 << 0)
+#define TCLR_AR                        (0x1 << 1)
+#define TCLR_PRE               (0x1 << 5)
+
+/*
+ * PRCM
+ */
+
+/* PRM */
+#define PRM_BASE               0x4A306000
+#define PRM_DEVICE_BASE                (PRM_BASE + 0x1B00)
+
+#define PRM_RSTCTRL            PRM_DEVICE_BASE
+
+#ifndef __ASSEMBLY__
+
+struct s32ktimer {
+       unsigned char res[0x10];
+       unsigned int s32k_cr;   /* 0x10 */
+};
+
+#endif /* __ASSEMBLY__ */
+
+/*
+ * Non-secure SRAM Addresses
+ * Non-secure RAM starts at 0x40300000 for GP devices. But we keep SRAM_BASE
+ * at 0x40304000(EMU base) so that our code works for both EMU and GP
+ */
+#define NON_SECURE_SRAM_START  0x40304000
+#define NON_SECURE_SRAM_END    0x4030E000      /* Not inclusive */
+/* base address for indirect vectors (internal boot mode) */
+#define SRAM_ROM_VECT_BASE     0x4030D000
+/* Temporary SRAM stack used while low level init is done */
+#define LOW_LEVEL_SRAM_STACK   NON_SECURE_SRAM_END
+
+/*
+ * OMAP4 real hardware:
+ * TODO: Change this to the IDCODE in the hw regsiter
+ */
+#define CPU_OMAP4430_ES10      1
+#define CPU_OMAP4430_ES20      2
+
+#endif
diff --git a/arch/arm/include/asm/arch-omap4/sys_proto.h b/arch/arm/include/asm/arch-omap4/sys_proto.h
new file mode 100644 (file)
index 0000000..6f4d3d5
--- /dev/null
@@ -0,0 +1,37 @@
+/*
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ *
+ * 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 _SYS_PROTO_H_
+#define _SYS_PROTO_H_
+
+#include <asm/arch/omap4.h>
+#include <asm/io.h>
+
+struct omap_sysinfo {
+       char *board_string;
+};
+
+void watchdog_init(void);
+u32 get_device_type(void);
+void invalidate_dcache(u32);
+
+extern const struct omap_sysinfo sysinfo;
+
+#endif