u-boot v2009.08 sd/mmc support.

Signed-off-by: Terry Lv <r65388@freescale.com>

7 files changed, 1269 insertions, 0 deletions

diff --git a/board/freescale/mx51_bbg/Makefile b/board/freescale/mx51_bbg/Makefile
new file mode 100644
index 0000000..109ca7b
--- /dev/null
+++ b/board/freescale/mx51_bbg/Makefile
@@ -0,0 +1,49 @@
+#
+# Copyright (C) 2007, Guennadi Liakhovetski <lg@denx.de>
+#
+# (C) Copyright 2009 Freescale Semiconductor, 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; 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	= $(obj)lib$(BOARD).a
+
+COBJS	:= mx51_bbg.o
+SOBJS	:= lowlevel_init.o flash_header.o
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+SOBJS	:= $(addprefix $(obj),$(SOBJS))
+
+$(LIB):	$(obj).depend $(OBJS) $(SOBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS)
+
+clean:
+	rm -f $(SOBJS) $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak .depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/freescale/mx51_bbg/board-imx51.h b/board/freescale/mx51_bbg/board-imx51.h
new file mode 100644
index 0000000..7a2cae0
--- /dev/null
+++ b/board/freescale/mx51_bbg/board-imx51.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2009 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+
+/*
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#ifndef __BOARD_FREESCALE_BOARD_IMX51_H__
+#define __BOARD_FREESCALE_BOARD_IMX51_H__
+
+/*!
+ * @defgroup BRDCFG_MX51 Board Configuration Options
+ * @ingroup MSL_MX51
+ */
+
+/*!
+ * @file mx51_3stack/board-imx51.h
+ *
+ * @brief This file contains all the board level configuration options.
+ *
+ * It currently hold the options defined for MX51 3Stack Platform.
+ *
+ * @ingroup BRDCFG_IMX51
+ */
+
+/* CPLD offsets */
+#define PBC_LED_CTRL		(0x20000)
+#define PBC_SB_STAT		(0x20008)
+#define PBC_ID_AAAA		(0x20040)
+#define PBC_ID_5555		(0x20048)
+#define PBC_VERSION		(0x20050)
+#define PBC_ID_CAFE		(0x20058)
+#define PBC_INT_STAT		(0x20010)
+#define PBC_INT_MASK		(0x20038)
+#define PBC_INT_REST		(0x20020)
+#define PBC_SW_RESET		(0x20060)
+
+/* LED switchs */
+#define LED_SWITCH_REG		0x00
+/* buttons */
+#define SWITCH_BUTTONS_REG	0x08
+/* status, interrupt */
+#define INTR_STATUS_REG	0x10
+#define INTR_MASK_REG		0x38
+#define INTR_RESET_REG		0x20
+/* magic word for debug CPLD */
+#define MAGIC_NUMBER1_REG	0x40
+#define MAGIC_NUMBER2_REG	0x48
+/* CPLD code version */
+#define CPLD_CODE_VER_REG	0x50
+/* magic word for debug CPLD */
+#define MAGIC_NUMBER3_REG	0x58
+/* module reset register*/
+#define MODULE_RESET_REG	0x60
+/* CPU ID and Personality ID */
+#define MCU_BOARD_ID_REG	0x68
+
+#endif				/* __BOARD_FREESCALE_BOARD_IMX51_H__ */
diff --git a/board/freescale/mx51_bbg/config.mk b/board/freescale/mx51_bbg/config.mk
new file mode 100644
index 0000000..705aa34
--- /dev/null
+++ b/board/freescale/mx51_bbg/config.mk
@@ -0,0 +1,3 @@
+LDSCRIPT := $(SRCTREE)/board/$(VENDOR)/$(BOARD)/u-boot.lds
+
+TEXT_BASE = 0x97800000
diff --git a/board/freescale/mx51_bbg/flash_header.S b/board/freescale/mx51_bbg/flash_header.S
new file mode 100644
index 0000000..6790679
--- /dev/null
+++ b/board/freescale/mx51_bbg/flash_header.S
@@ -0,0 +1,113 @@
+/*
+ * Copyright 2009 Freescale Semiconductor, 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; 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 <config.h>
+#include <asm/arch/mx51.h>
+#include "board-imx51.h"
+
+#ifdef	CONFIG_FLASH_HEADER
+#ifndef CONFIG_FLASH_HEADER_OFFSET
+# error "Must define the offset of flash header"
+#endif
+#define MXC_DCD_ITEM(i, type, addr, val)	\
+dcd_node_##i:					\
+	.word type			;	\
+	.word addr			;	\
+	.word val			;	\
+
+.section ".text.flasheader", "x"
+	b	_start
+	.org	CONFIG_FLASH_HEADER_OFFSET
+app_code_jump_v:	.word	_start
+app_code_code_barker:	.word	CONFIG_FLASH_HEADER_BARKER
+app_code_csf:		.word	0
+dcd_ptr_ptr:		.word	dcd_ptr
+super_root_key:		.word	0
+dcd_ptr:		.word	dcd_array_start
+app_dest_ptr:		.word	TEXT_BASE
+dcd_array_start:
+magic:			.word	0xB17219E9
+dcd_array_size:		.word	dcd_data_end - dcd_array_start - 8
+/* DCD */
+/* DDR2 IOMUX configuration */
+MXC_DCD_ITEM(1, 4, IOMUXC_BASE_ADDR + 0x8a0, 0x200)
+MXC_DCD_ITEM(2, 4, IOMUXC_BASE_ADDR + 0x50c, 0x20c5)
+MXC_DCD_ITEM(3, 4, IOMUXC_BASE_ADDR + 0x510, 0x20c5)
+MXC_DCD_ITEM(4, 4, IOMUXC_BASE_ADDR + 0x83c, 0x2)
+MXC_DCD_ITEM(5, 4, IOMUXC_BASE_ADDR + 0x848, 0x2)
+MXC_DCD_ITEM(6, 4, IOMUXC_BASE_ADDR + 0x4b8, 0xe7)
+MXC_DCD_ITEM(7, 4, IOMUXC_BASE_ADDR + 0x4bc, 0x45)
+MXC_DCD_ITEM(8, 4, IOMUXC_BASE_ADDR + 0x4c0, 0x45)
+MXC_DCD_ITEM(9, 4, IOMUXC_BASE_ADDR + 0x4c4, 0x45)
+MXC_DCD_ITEM(10, 4, IOMUXC_BASE_ADDR + 0x4c8, 0x45)
+MXC_DCD_ITEM(11, 4, IOMUXC_BASE_ADDR + 0x820, 0x0)
+MXC_DCD_ITEM(12, 4, IOMUXC_BASE_ADDR + 0x4a4, 0x3)
+MXC_DCD_ITEM(13, 4, IOMUXC_BASE_ADDR + 0x4a8, 0x3)
+MXC_DCD_ITEM(14, 4, IOMUXC_BASE_ADDR + 0x4ac, 0xe3)
+MXC_DCD_ITEM(15, 4, IOMUXC_BASE_ADDR + 0x4b0, 0xe3)
+MXC_DCD_ITEM(16, 4, IOMUXC_BASE_ADDR + 0x4b4, 0xe3)
+MXC_DCD_ITEM(17, 4, IOMUXC_BASE_ADDR + 0x4cc, 0xe3)
+MXC_DCD_ITEM(18, 4, IOMUXC_BASE_ADDR + 0x4d0, 0xe2)
+/* Set drive strength to MAX */
+MXC_DCD_ITEM(19, 4, IOMUXC_BASE_ADDR + 0x82c, 0x6)
+MXC_DCD_ITEM(20, 4, IOMUXC_BASE_ADDR + 0x8a4, 0x6)
+MXC_DCD_ITEM(21, 4, IOMUXC_BASE_ADDR + 0x8ac, 0x6)
+MXC_DCD_ITEM(22, 4, IOMUXC_BASE_ADDR + 0x8b8, 0x6)
+/* 13 ROW, 10 COL, 32Bit, SREF=4 Micron Model */
+/* CAS=3,  BL=4 */
+MXC_DCD_ITEM(23, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDCTL0, 0x82a20000)
+MXC_DCD_ITEM(24, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDCTL1, 0x82a20000)
+MXC_DCD_ITEM(25, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDMISC, 0x000ad0d0)
+MXC_DCD_ITEM(26, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDCFG0, 0x333574aa)
+MXC_DCD_ITEM(27, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDCFG1, 0x333574aa)
+/* Init DRAM on CS0 */
+MXC_DCD_ITEM(28, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDSCR, 0x04008008)
+MXC_DCD_ITEM(29, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDSCR, 0x0000801a)
+MXC_DCD_ITEM(30, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDSCR, 0x0000801b)
+MXC_DCD_ITEM(31, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDSCR, 0x00448019)
+MXC_DCD_ITEM(32, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDSCR, 0x07328018)
+MXC_DCD_ITEM(33, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDSCR, 0x04008008)
+MXC_DCD_ITEM(34, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDSCR, 0x00008010)
+MXC_DCD_ITEM(35, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDSCR, 0x00008010)
+MXC_DCD_ITEM(36, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDSCR, 0x06328018)
+MXC_DCD_ITEM(37, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDSCR, 0x03808019)
+MXC_DCD_ITEM(38, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDSCR, 0x00408019)
+MXC_DCD_ITEM(39, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDSCR, 0x00008000)
+/* Init DRAM on CS1 */
+MXC_DCD_ITEM(40, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDSCR, 0x0400800c)
+MXC_DCD_ITEM(41, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDSCR, 0x0000801e)
+MXC_DCD_ITEM(42, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDSCR, 0x0000801f)
+MXC_DCD_ITEM(43, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDSCR, 0x0000801d)
+MXC_DCD_ITEM(44, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDSCR, 0x0732801c)
+MXC_DCD_ITEM(45, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDSCR, 0x0400800c)
+MXC_DCD_ITEM(46, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDSCR, 0x00008014)
+MXC_DCD_ITEM(47, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDSCR, 0x00008014)
+MXC_DCD_ITEM(48, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDSCR, 0x0632801c)
+MXC_DCD_ITEM(49, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDSCR, 0x0380801d)
+MXC_DCD_ITEM(50, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDSCR, 0x0040801d)
+MXC_DCD_ITEM(51, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDSCR, 0x00008004)
+MXC_DCD_ITEM(52, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDCTL0, 0xb2a20000)
+MXC_DCD_ITEM(53, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDCTL1, 0xb2a20000)
+MXC_DCD_ITEM(54, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDMISC, 0x000ad6d0)
+MXC_DCD_ITEM(55, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDCDLYGD, 0x90000000)
+MXC_DCD_ITEM(56, 4, ESDCTL_BASE_ADDR + ESDCTL_ESDSCR, 0x00000000)
+dcd_data_end:
+image_len:		.word	0x100000
+//image_len:		.word	_end - _start
+#endif
diff --git a/board/freescale/mx51_bbg/lowlevel_init.S b/board/freescale/mx51_bbg/lowlevel_init.S
new file mode 100644
index 0000000..e974a5f
--- /dev/null
+++ b/board/freescale/mx51_bbg/lowlevel_init.S
@@ -0,0 +1,287 @@
+/*
+ * Copyright (C) 2007, Guennadi Liakhovetski <lg@denx.de>
+ *
+ * (C) Copyright 2009 Freescale Semiconductor, 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; 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 <config.h>
+#include <asm/arch/mx51.h>
+#include "board-imx51.h"
+
+/*
+ * return soc version
+ * 	0x10:  TO1
+ *	0x20:  TO2
+ *	0x30:  TO3
+ */
+.macro check_soc_version ret, tmp
+.endm
+
+/*
+ * L2CC Cache setup/invalidation/disable
+ */
+.macro init_l2cc
+	/* reconfigure L2 cache aux control reg */
+	ldr r0, =0x03C000C4
+	mcr p15, 1, r0, c9, c0, 2
+.endm /* init_l2cc */
+
+/* AIPS setup - Only setup MPROTx registers.
+ * The PACR default values are good.*/
+.macro init_aips
+	/*
+	 * Set all MPROTx to be non-bufferable, trusted for R/W,
+	 * not forced to user-mode.
+	 */
+	ldr r0, =AIPS1_BASE_ADDR
+	ldr r1, =0x77777777
+	str r1, [r0, #0x0]
+	str r1, [r0, #0x4]
+	ldr r0, =AIPS2_BASE_ADDR
+	str r1, [r0, #0x0]
+	str r1, [r0, #0x4]
+	/*
+	 * Clear the on and off peripheral modules Supervisor Protect bit
+	 * for SDMA to access them. Did not change the AIPS control registers
+	 * (offset 0x20) access type
+	 */
+.endm /* init_aips */
+
+/* MAX (Multi-Layer AHB Crossbar Switch) setup */
+.macro init_max
+.endm /* init_max */
+
+/* M4IF setup */
+.macro init_m4if
+	/* VPU and IPU given higher priority (0x4)
+	 * IPU accesses with ID=0x1 given highest priority (=0xA)
+	 */
+	ldr r0, =M4IF_BASE_ADDR
+
+	ldr r1, =0x00000203
+	str r1, [r0, #0x40]
+
+	ldr r1, =0x0
+	str r1, [r0, #0x44]
+
+	ldr r1, =0x00120125
+	str r1, [r0, #0x9C]
+
+	ldr r1, =0x001901A3
+	str r1, [r0, #0x48]
+
+/*
+	ldr r1, =0x00000a01
+	str r1, [r0, #0x48]
+	ldr r1, =0x00000404
+	str r1, [r0, #0x40]
+*/
+.endm /* init_m4if */
+
+/* To support 133MHz DDR */
+.macro  init_drive_strength
+.endm /* init_drive_strength */
+
+/* CPLD on CS5 setup */
+.macro init_debug_board
+.endm /* init_debug_board */
+
+.macro setup_pll pll, freq
+	ldr r2, =\pll
+	ldr r1, =0x00001232
+	str r1, [r2, #PLL_DP_CTL] /* Set DPLL ON (set UPEN bit): BRMO=1 */
+	mov r1, #0x2
+	str r1, [r2, #PLL_DP_CONFIG] /* Enable auto-restart AREN bit */
+
+	str r3, [r2, #PLL_DP_OP]
+	str r3, [r2, #PLL_DP_HFS_OP]
+
+	str r4, [r2, #PLL_DP_MFD]
+	str r4, [r2, #PLL_DP_HFS_MFD]
+
+	str r5, [r2, #PLL_DP_MFN]
+	str r5, [r2, #PLL_DP_HFS_MFN]
+
+	ldr r1, =0x00001232
+	str r1, [r2, #PLL_DP_CTL]
+1:	ldr r1, [r2, #PLL_DP_CTL]
+	ands r1, r1, #0x1
+	beq 1b
+.endm
+
+.macro init_clock
+	ldr r0, =CCM_BASE_ADDR
+	mov r1, #0x00060000
+	str r1, [r0, #CLKCTL_CCDR]
+
+	/* Switch ARM to step clock */
+	mov r1, #0x4
+	str r1, [r0, #CLKCTL_CCSR]
+
+	mov r3, #DP_OP_800
+	mov r4, #DP_MFD_800
+	mov r5, #DP_MFN_800
+	setup_pll PLL1_BASE_ADDR
+	mov r3, #DP_OP_665
+	mov r4, #DP_MFD_665
+	mov r5, #DP_MFN_665
+	setup_pll PLL3_BASE_ADDR
+
+	/* Switch peripheral to PLL 3 */
+	ldr r1, =0x0000D3C0
+	str r1, [r0, #CLKCTL_CBCMR]
+	ldr r1, =0x033B9145
+	str r1, [r0, #CLKCTL_CBCDR]
+	mov r3, #DP_OP_665
+	mov r4, #DP_MFD_665
+	mov r5, #DP_MFN_665
+	setup_pll PLL2_BASE_ADDR
+
+	/* Switch peripheral to PLL2 */
+	ldr r1, =0x013B9145
+	str r1, [r0, #CLKCTL_CBCDR]
+	ldr r1, =0x0000E3C0
+	str r1, [r0, #CLKCTL_CBCMR]
+
+	mov r3, #DP_OP_216
+	mov r4, #DP_MFD_216
+	mov r5, #DP_MFN_216
+	setup_pll PLL3_BASE_ADDR
+
+	/* Set the platform clock dividers */
+	ldr r2, =ARM_BASE_ADDR
+	ldr r1, =0x00000725
+	str r1, [r2, #0x14]
+
+	/* Switch ARM back to PLL 1 */
+	mov r1, #0
+	str r1, [r0,  #CLKCTL_CCSR]
+	str r1, [r0,  #CLKCTL_CACRR]
+
+	/* Use lp_apm (24MHz) source for perclk */
+	mov r2, #0x48
+	ldr r2, [r0]
+	cmp r2, #0x10
+	ldrhs r1, =0x000020C2
+	ldrlo r1, =0x0000E3C2
+	str r1, [r0, #CLKCTL_CBCMR]
+	/* TO1.x emi = ahb, all perclk dividers are 1 since using 24MHz */
+	/* TO2.x ddr from PLL1, all perclk dividers are 1 since using 24MHz */
+	ldrhs r1, =0x59239100
+	ldrlo r1, =0x013D9100
+	strlo r1, [r0, #CLKCTL_CBCDR]
+
+	/* use PLL2 for UART source, get 66.5MHz */
+	ldr r1, =0xA5A2A020
+	str r1, [r0, #CLKCTL_CSCMR1]
+	ldr r1, =0x00C30321
+	str r1, [r0, #CLKCTL_CSCDR1]
+
+	/* make sure divider effective */
+1:	ldr r1, [r0, #CLKCTL_CDHIPR]
+	cmp r1, #0
+	bne 1b
+
+	mov r1, #0x0
+	str r1, [r0, #CLKCTL_CCDR]
+.endm
+
+.macro setup_wdog
+	ldr r0, =WDOG1_BASE_ADDR
+	mov r1, #0x30
+	strh r1, [r0]
+.endm
+
+.section ".text.init", "x"
+
+.globl lowlevel_init
+lowlevel_init:
+	/* Platform CHIP level init*/
+	ldr r0, =GPIO1_BASE_ADDR
+    ldr r1, [r0, #0x0]
+    orr r1, r1, #(1 << 23)
+    str r1, [r0, #0x0]
+    ldr r1, [r0, #0x4]
+    orr r1, r1, #(1 << 23)
+    str r1, [r0, #0x4]
+
+#ifdef TURN_OFF_IMPRECISE_ABORT
+	mrs r0, cpsr
+	bic r0, r0, #0x100
+	msr cpsr, r0
+#endif
+
+	mrc 15, 0, r1, c1, c0, 0
+
+#ifndef BRANCH_PREDICTION_ENABLE
+    	mrc 15, 0, r0, c1, c0, 1
+    	bic r0, r0, #7
+    	mcr 15, 0, r0, c1, c0, 1
+#else
+    	mrc 15, 0, r0, c1, c0, 1
+    	orr r0, r0, #7
+    	mcr 15, 0, r0, c1, c0, 1
+    	orr r1, r1, #(1<<11)
+#endif
+
+#ifdef UNALIGNED_ACCESS_ENABLE
+    	orr r1, r1, #(1<<22)
+#endif
+
+#ifdef LOW_INT_LATENCY_ENABLE
+    	orr r1, r1, #(1<<21)
+#endif
+    	mcr 15, 0, r1, c1, c0, 0
+
+    	mov r0, #0
+#ifdef BRANCH_PREDICTION_ENABLE
+   	mcr 15, 0, r0, c15, c2, 4
+#endif
+	mcr 15, 0, r0, c7, c10, 4       /* Drain the write buffer */
+
+	init_l2cc
+
+	init_aips
+
+	init_max
+
+	init_m4if
+
+	init_drive_strength
+
+	cmp pc, #PHYS_SDRAM_1
+	blo init_clock_start
+	cmp pc, #(PHYS_SDRAM_1 + PHYS_SDRAM_1_SIZE)
+	blo init_clock_start
+
+init_clock_start:
+	init_clock
+	init_debug_board
+	/*init_sdram*/
+
+	/* return from mxc_nand_load */
+	/* r12 saved upper lr*/
+	b mxc_nand_load
+
+/* Board level setting value */
+DDR_PERCHARGE_CMD:	.word 0x04008008
+DDR_REFRESH_CMD:	.word 0x00008010
+DDR_LMR1_W:		.word 0x00338018
+DDR_LMR_CMD:		.word 0xB2220000
+DDR_TIMING_W:		.word 0xB02567A9
+DDR_MISC_W:		.word 0x000A0104
diff --git a/board/freescale/mx51_bbg/mx51_bbg.c b/board/freescale/mx51_bbg/mx51_bbg.c
new file mode 100644
index 0000000..9e1bb1a
--- /dev/null
+++ b/board/freescale/mx51_bbg/mx51_bbg.c
@@ -0,0 +1,680 @@
+/*
+ * Copyright (C) 2007, Guennadi Liakhovetski <lg@denx.de>
+ *
+ * (C) Copyright 2009 Freescale Semiconductor, Inc.
+ *
+ * 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/io.h>
+#include <asm/arch/mx51.h>
+#include <asm/arch/mx51_pins.h>
+#include <asm/arch/iomux.h>
+#include <asm/errno.h>
+#include <i2c.h>
+#include <mxc_keyb.h>
+#include <asm/arch/keypad.h>
+#include "board-imx51.h"
+#include <asm/arch/imx_spi.h>
+#include <asm/arch/imx_spi_pmic.h>
+#include <fsl_esdhc.h>
+
+#include <part.h>
+#include <ext2fs.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static u32 system_rev;
+u32	mx51_io_base_addr;
+
+u32 get_board_rev(void)
+{
+	return system_rev;
+}
+
+static inline void setup_soc_rev(void)
+{
+	int reg;
+	reg = __REG(ROM_SI_REV);
+	switch (reg) {
+	case 0x02:
+		system_rev = 0x51000 | CHIP_REV_1_1;
+		break;
+	case 0x10:
+		if ((__REG(GPIO1_BASE_ADDR + 0x0) & (0x1 << 22)) == 0) {
+			system_rev = 0x51000 | CHIP_REV_2_5;
+		} else {
+			system_rev = 0x51000 | CHIP_REV_2_0;
+		}
+		break;
+	default:
+		system_rev = 0x51000 | CHIP_REV_1_0;
+	}
+}
+
+static inline void set_board_rev(int rev)
+{
+	system_rev |= (rev & 0xF) << 8;
+}
+
+inline int is_soc_rev(int rev)
+{
+	return (system_rev & 0xFF) - rev;
+}
+
+int dram_init(void)
+{
+	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
+	gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
+	return 0;
+}
+
+static void setup_uart(void)
+{
+	unsigned int pad = PAD_CTL_HYS_ENABLE | PAD_CTL_PKE_ENABLE |
+			 PAD_CTL_PUE_PULL | PAD_CTL_DRV_HIGH;
+	mxc_request_iomux(MX51_PIN_UART1_RXD, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_UART1_RXD, pad | PAD_CTL_SRE_FAST);
+	mxc_request_iomux(MX51_PIN_UART1_TXD, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_UART1_TXD, pad | PAD_CTL_SRE_FAST);
+	mxc_request_iomux(MX51_PIN_UART1_RTS, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_UART1_RTS, pad);
+	mxc_request_iomux(MX51_PIN_UART1_CTS, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_UART1_CTS, pad);
+}
+
+void setup_nfc(void)
+{
+	/* Enable NFC IOMUX */
+	mxc_request_iomux(MX51_PIN_NANDF_CS0, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX51_PIN_NANDF_CS1, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX51_PIN_NANDF_CS2, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX51_PIN_NANDF_CS3, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX51_PIN_NANDF_CS4, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX51_PIN_NANDF_CS5, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX51_PIN_NANDF_CS6, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX51_PIN_NANDF_CS7, IOMUX_CONFIG_ALT0);
+}
+
+static void setup_expio(void)
+{
+	u32 reg;
+	/* CS5 setup */
+	mxc_request_iomux(MX51_PIN_EIM_CS5, IOMUX_CONFIG_ALT0);
+	writel(0x00410089, WEIM_BASE_ADDR + 0x78 + CSGCR1);
+	writel(0x00000002, WEIM_BASE_ADDR + 0x78 + CSGCR2);
+	/* RWSC=50, RADVA=2, RADVN=6, OEA=0, OEN=0, RCSA=0, RCSN=0 */
+	writel(0x32260000, WEIM_BASE_ADDR + 0x78 + CSRCR1);
+	/* APR = 0 */
+	writel(0x00000000, WEIM_BASE_ADDR + 0x78 + CSRCR2);
+	/* WAL=0, WBED=1, WWSC=50, WADVA=2, WADVN=6, WEA=0, WEN=0,
+	 * WCSA=0, WCSN=0
+	 */
+	writel(0x72080F00, WEIM_BASE_ADDR + 0x78 + CSWCR1);
+	if ((readw(CS5_BASE_ADDR + PBC_ID_AAAA) == 0xAAAA) &&
+	    (readw(CS5_BASE_ADDR + PBC_ID_5555) == 0x5555)) {
+		if (is_soc_rev(CHIP_REV_2_0) < 0) {
+			reg = readl(CCM_BASE_ADDR + CLKCTL_CBCDR);
+			reg = (reg & (~0x70000)) | 0x30000;
+			writel(reg, CCM_BASE_ADDR + CLKCTL_CBCDR);
+			/* make sure divider effective */
+			while (readl(CCM_BASE_ADDR + CLKCTL_CDHIPR) != 0)
+				;
+			writel(0x0, CCM_BASE_ADDR + CLKCTL_CCDR);
+		}
+		mx51_io_base_addr = CS5_BASE_ADDR;
+	} else {
+		/* CS1 */
+		writel(0x00410089, WEIM_BASE_ADDR + 0x18 + CSGCR1);
+		writel(0x00000002, WEIM_BASE_ADDR + 0x18 + CSGCR2);
+		/*  RWSC=50, RADVA=2, RADVN=6, OEA=0, OEN=0, RCSA=0, RCSN=0 */
+		writel(0x32260000, WEIM_BASE_ADDR + 0x18 + CSRCR1);
+		/* APR=0 */
+		writel(0x00000000, WEIM_BASE_ADDR + 0x18 + CSRCR2);
+		/* WAL=0, WBED=1, WWSC=50, WADVA=2, WADVN=6, WEA=0,
+		 * WEN=0, WCSA=0, WCSN=0
+		 */
+		writel(0x72080F00, WEIM_BASE_ADDR + 0x18 + CSWCR1);
+		mx51_io_base_addr = CS1_BASE_ADDR;
+	}
+
+	/* Reset interrupt status reg */
+	writew(0x1F, mx51_io_base_addr + PBC_INT_REST);
+	writew(0x00, mx51_io_base_addr + PBC_INT_REST);
+	writew(0xFFFF, mx51_io_base_addr + PBC_INT_MASK);
+
+	/* Reset the XUART and Ethernet controllers */
+	reg = readw(mx51_io_base_addr + PBC_SW_RESET);
+	reg |= 0x9;
+	writew(reg, mx51_io_base_addr + PBC_SW_RESET);
+	reg &= ~0x9;
+	writew(reg, mx51_io_base_addr + PBC_SW_RESET);
+}
+
+void spi_io_init(struct imx_spi_dev_t *dev)
+{
+	switch (dev->base) {
+	case CSPI1_BASE_ADDR:
+		/* 000: Select mux mode: ALT0 mux port: MOSI of instance: ecspi1 */
+		mxc_request_iomux(MX51_PIN_CSPI1_MOSI, IOMUX_CONFIG_ALT0);
+		mxc_iomux_set_pad(MX51_PIN_CSPI1_MOSI, 0x105);
+
+		/* 000: Select mux mode: ALT0 mux port: MISO of instance: ecspi1. */
+		mxc_request_iomux(MX51_PIN_CSPI1_MISO, IOMUX_CONFIG_ALT0);
+		mxc_iomux_set_pad(MX51_PIN_CSPI1_MISO, 0x105);
+
+		if (dev->ss == 0) {
+			/* de-select SS1 of instance: ecspi1. */
+			mxc_request_iomux(MX51_PIN_CSPI1_SS1, IOMUX_CONFIG_ALT3);
+			mxc_iomux_set_pad(MX51_PIN_CSPI1_SS1, 0x85);
+			/* 000: Select mux mode: ALT0 mux port: SS0 of instance: ecspi1. */
+			mxc_request_iomux(MX51_PIN_CSPI1_SS0, IOMUX_CONFIG_ALT0);
+			mxc_iomux_set_pad(MX51_PIN_CSPI1_SS0, 0x185);
+		} else if (dev->ss == 1) {
+			/* de-select SS0 of instance: ecspi1. */
+			mxc_request_iomux(MX51_PIN_CSPI1_SS0, IOMUX_CONFIG_ALT3);
+			mxc_iomux_set_pad(MX51_PIN_CSPI1_SS0, 0x85);
+			/* 000: Select mux mode: ALT0 mux port: SS1 of instance: ecspi1. */
+			mxc_request_iomux(MX51_PIN_CSPI1_SS1, IOMUX_CONFIG_ALT0);
+			mxc_iomux_set_pad(MX51_PIN_CSPI1_SS1, 0x105);
+		}
+
+		/* 000: Select mux mode: ALT0 mux port: RDY of instance: ecspi1. */
+		mxc_request_iomux(MX51_PIN_CSPI1_RDY, IOMUX_CONFIG_ALT0);
+		mxc_iomux_set_pad(MX51_PIN_CSPI1_RDY, 0x180);
+
+		/* 000: Select mux mode: ALT0 mux port: SCLK of instance: ecspi1. */
+		mxc_request_iomux(MX51_PIN_CSPI1_SCLK, IOMUX_CONFIG_ALT0);
+		mxc_iomux_set_pad(MX51_PIN_CSPI1_SCLK, 0x105);
+		break;
+	case CSPI2_BASE_ADDR:
+	default:
+		break;
+	}
+}
+
+static void setup_fec(void)
+{
+	/*FEC_MDIO*/
+	writel(0x3, IOMUXC_BASE_ADDR + 0x0D4);
+	writel(0x1FD, IOMUXC_BASE_ADDR + 0x0468);
+	writel(0x0, IOMUXC_BASE_ADDR + 0x0954);
+
+	/*FEC_MDC*/
+	writel(0x2, IOMUXC_BASE_ADDR + 0x13C);
+	writel(0x2004, IOMUXC_BASE_ADDR + 0x0524);
+
+	/* FEC RDATA[3] */
+	writel(0x3, IOMUXC_BASE_ADDR + 0x0EC);
+	writel(0x180, IOMUXC_BASE_ADDR + 0x0480);
+	writel(0x0, IOMUXC_BASE_ADDR + 0x0964);
+
+	/* FEC RDATA[2] */
+	writel(0x3, IOMUXC_BASE_ADDR + 0x0E8);
+	writel(0x180, IOMUXC_BASE_ADDR + 0x047C);
+	writel(0x0, IOMUXC_BASE_ADDR + 0x0960);
+
+	/* FEC RDATA[1] */
+	writel(0x3, IOMUXC_BASE_ADDR + 0x0d8);
+	writel(0x180, IOMUXC_BASE_ADDR + 0x046C);
+	writel(0x0, IOMUXC_BASE_ADDR + 0x095C);
+
+	/* FEC RDATA[0] */
+	writel(0x2, IOMUXC_BASE_ADDR + 0x016C);
+	writel(0x2180, IOMUXC_BASE_ADDR + 0x0554);
+	writel(0x0, IOMUXC_BASE_ADDR + 0x0958);
+
+	/* FEC TDATA[3] */
+	writel(0x2, IOMUXC_BASE_ADDR + 0x148);
+	writel(0x2004, IOMUXC_BASE_ADDR + 0x0530);
+
+	/* FEC TDATA[2] */
+	writel(0x2, IOMUXC_BASE_ADDR + 0x144);
+	writel(0x2004, IOMUXC_BASE_ADDR + 0x052C);
+
+	/* FEC TDATA[1] */
+	writel(0x2, IOMUXC_BASE_ADDR + 0x140);
+	writel(0x2004, IOMUXC_BASE_ADDR + 0x0528);
+
+	/* FEC TDATA[0] */
+	writel(0x2, IOMUXC_BASE_ADDR + 0x0170);
+	writel(0x2004, IOMUXC_BASE_ADDR + 0x0558);
+
+	/* FEC TX_EN */
+	writel(0x1, IOMUXC_BASE_ADDR + 0x014C);
+	writel(0x2004, IOMUXC_BASE_ADDR + 0x0534);
+
+	/* FEC TX_ER */
+	writel(0x2, IOMUXC_BASE_ADDR + 0x0138);
+	writel(0x2004, IOMUXC_BASE_ADDR + 0x0520);
+
+	/* FEC TX_CLK */
+	writel(0x1, IOMUXC_BASE_ADDR + 0x0150);
+	writel(0x2180, IOMUXC_BASE_ADDR + 0x0538);
+	writel(0x0, IOMUXC_BASE_ADDR + 0x0974);
+
+	/* FEC COL */
+	writel(0x1, IOMUXC_BASE_ADDR + 0x0124);
+	writel(0x2180, IOMUXC_BASE_ADDR + 0x0500);
+	writel(0x0, IOMUXC_BASE_ADDR + 0x094c);
+
+	/* FEC RX_CLK */
+	writel(0x1, IOMUXC_BASE_ADDR + 0x0128);
+	writel(0x2180, IOMUXC_BASE_ADDR + 0x0504);
+	writel(0x0, IOMUXC_BASE_ADDR + 0x0968);
+
+	/* FEC CRS */
+	writel(0x3, IOMUXC_BASE_ADDR + 0x0f4);
+	writel(0x180, IOMUXC_BASE_ADDR + 0x0488);
+	writel(0x0, IOMUXC_BASE_ADDR + 0x0950);
+
+	/* FEC RX_ER */
+	writel(0x3, IOMUXC_BASE_ADDR + 0x0f0);
+	writel(0x180, IOMUXC_BASE_ADDR + 0x0484);
+	writel(0x0, IOMUXC_BASE_ADDR + 0x0970);
+
+	/* FEC RX_DV */
+	writel(0x2, IOMUXC_BASE_ADDR + 0x164);
+	writel(0x2180, IOMUXC_BASE_ADDR + 0x054C);
+	writel(0x0, IOMUXC_BASE_ADDR + 0x096C);
+}
+
+static void power_init(void)
+{
+	struct spi_slave *slave;
+	unsigned int val;
+	unsigned int reg;
+
+	slave = spi_pmic_probe();
+
+	/* power up the system first */
+	pmic_reg(slave, 34, 0x00200000, 1);
+
+	if (mxc_get_clock(MXC_FEC_CLK) > 800000000) {
+		/* Set core voltage to 1.175V */
+		val = pmic_reg(slave, 24, 0, 0);
+		val = (val & (~0x1F)) | 0x17;
+		pmic_reg(slave, 24, val, 1);
+	}
+
+	/* Setup VCC (SW2) to 1.225 */
+	val = pmic_reg(slave, 25, 0, 0);
+	val = (val & (~0x1F)) | 0x19;
+	pmic_reg(slave, 25, val, 1);
+
+	/* Setup 1V2_DIG1 (SW3) to 1.2 */
+	val = pmic_reg(slave, 26, 0, 0);
+	val = (val & (~0x1F)) | 0x18;
+	pmic_reg(slave, 25, val, 1);
+
+	/* Set VDIG to 1.65V, VGEN3 to 1.8V, VCAM to 2.5V */
+	val = pmic_reg(slave, 30, 0, 0);
+	val &= ~0x34030;
+	val |= 0x10020;
+	pmic_reg(slave, 30, val, 1);
+
+	/* Set VVIDEO to 2.775V, VAUDIO to 3V, VSD to 3.15V */
+	val = pmic_reg(slave, 31, 0, 0);
+	val &= ~0x1FC;
+	val |= 0x1F4;
+	pmic_reg(slave, 31, val, 1);
+
+	/* Configure VGEN3 and VCAM regulators to use external PNP */
+	val = 0x208;
+	pmic_reg(slave, 33, val, 1);
+	udelay(200);
+
+	reg = readl(GPIO2_BASE_ADDR + 0x0);
+	reg &= ~0x4000;  /* Lower reset line */
+	writel(reg, GPIO2_BASE_ADDR + 0x0);
+
+	reg = readl(GPIO2_BASE_ADDR + 0x4);
+	reg |= 0x4000;  /* configure GPIO lines as output */
+	writel(reg, GPIO2_BASE_ADDR + 0x4);
+
+	/* Reset the ethernet controller over GPIO */
+	writel(0x1, IOMUXC_BASE_ADDR + 0x0AC);
+
+	/* Enable VGEN3, VCAM, VAUDIO, VVIDEO, VSD regulators */
+	val = 0x49249;
+	pmic_reg(slave, 33, val, 1);
+
+	udelay(500);
+
+	reg = readl(GPIO2_BASE_ADDR + 0x0);
+	reg |= 0x4000;
+	writel(reg, GPIO2_BASE_ADDR + 0x0);
+
+	/* Setup the FEC after enabling the regulators */
+	setup_fec();
+
+	spi_pmic_free(slave);
+}
+
+#ifdef CONFIG_NET_MULTI
+
+int board_eth_init(bd_t *bis)
+{
+	int rc = -ENODEV;
+
+	return rc;
+}
+#endif
+
+#ifdef CONFIG_CMD_MMC
+
+u32 *imx_esdhc_base_addr;
+
+int esdhc_gpio_init(void)
+{
+	u32 interface_esdhc = 0;
+        s32 status = 0;
+        u32 pad = 0;
+
+        interface_esdhc = (readl(SRC_BASE_ADDR + 0x4) & (0x00180000)) >> 19;
+
+	printf("interface_esdhc: %d\n", interface_esdhc);
+
+	switch (interface_esdhc) {
+        case 0:
+		imx_esdhc_base_addr = (u32 *)MMC_SDHC1_BASE_ADDR;
+
+		pad = PAD_CTL_PUE_KEEPER | PAD_CTL_PKE_ENABLE | PAD_CTL_DRV_HIGH |
+		                PAD_CTL_47K_PU | PAD_CTL_SRE_FAST;
+
+		mxc_request_iomux(MX51_PIN_SD1_CMD,
+			  IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+		mxc_request_iomux(MX51_PIN_SD1_CLK,
+			  IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+
+		mxc_request_iomux(MX51_PIN_SD1_DATA0,
+				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+		mxc_request_iomux(MX51_PIN_SD1_DATA1,
+				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+		mxc_request_iomux(MX51_PIN_SD1_DATA2,
+				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+		mxc_request_iomux(MX51_PIN_SD1_DATA3,
+				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+		mxc_iomux_set_pad(MX51_PIN_SD1_CMD, pad);
+		mxc_iomux_set_pad(MX51_PIN_SD1_CLK, pad);
+		mxc_iomux_set_pad(MX51_PIN_SD1_DATA0, pad);
+		mxc_iomux_set_pad(MX51_PIN_SD1_DATA1, pad);
+		mxc_iomux_set_pad(MX51_PIN_SD1_DATA2, pad);
+		mxc_iomux_set_pad(MX51_PIN_SD1_DATA3, pad);
+		break;
+	case 1:
+		imx_esdhc_base_addr = (u32 *)MMC_SDHC2_BASE_ADDR;
+
+		pad = PAD_CTL_DRV_MAX | PAD_CTL_22K_PU | PAD_CTL_SRE_FAST;
+
+		mxc_request_iomux(MX51_PIN_SD2_CMD,
+			  IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+		mxc_request_iomux(MX51_PIN_SD2_CLK,
+			  IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+
+		mxc_request_iomux(MX51_PIN_SD2_DATA0,
+				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+		mxc_request_iomux(MX51_PIN_SD2_DATA1,
+				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+		mxc_request_iomux(MX51_PIN_SD2_DATA2,
+				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+		mxc_request_iomux(MX51_PIN_SD2_DATA3,
+				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+		mxc_iomux_set_pad(MX51_PIN_SD2_CMD, pad);
+		mxc_iomux_set_pad(MX51_PIN_SD2_CLK, pad);
+		mxc_iomux_set_pad(MX51_PIN_SD2_DATA0, pad);
+		mxc_iomux_set_pad(MX51_PIN_SD2_DATA1, pad);
+		mxc_iomux_set_pad(MX51_PIN_SD2_DATA2, pad);
+		mxc_iomux_set_pad(MX51_PIN_SD2_DATA3, pad);
+		break;
+	case 2:
+		status = -1;
+		break;
+	case 3:
+		status = -1;
+		break;
+	default:
+		status = -1;
+		break;
+	}
+
+	return status;
+}
+
+int board_mmc_init(void)
+{
+	if (!esdhc_gpio_init())
+		return fsl_esdhc_mmc_init(gd->bd);
+	else
+		return -1;
+}
+
+#endif
+
+#if defined(CONFIG_MXC_KPD)
+int setup_mxc_kpd()
+{
+	mxc_request_iomux(MX51_PIN_KEY_COL0, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX51_PIN_KEY_COL1, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX51_PIN_KEY_COL2, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX51_PIN_KEY_COL3, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX51_PIN_KEY_COL4, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX51_PIN_KEY_COL5, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX51_PIN_KEY_ROW0, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX51_PIN_KEY_ROW1, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX51_PIN_KEY_ROW2, IOMUX_CONFIG_ALT0);
+	mxc_request_iomux(MX51_PIN_KEY_ROW3, IOMUX_CONFIG_ALT0);
+
+	return 0;
+}
+#endif
+
+int board_init(void)
+{
+	setup_soc_rev();
+
+	gd->bd->bi_arch_number = MACH_TYPE_MX51_BABBAGE;	/* board id for linux */
+	/* address of boot parameters */
+	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
+
+	setup_uart();
+	setup_nfc();
+	setup_expio();
+	return 0;
+}
+
+#ifdef BOARD_LATE_INIT
+int board_late_init(void)
+{
+#if defined(CONFIG_FSL_ANDROID) && defined(CONFIG_MXC_KPD)
+	struct kpp_key_info key_info = {0, 0};
+	int switch_delay = CONFIG_ANDROID_BOOTMOD_DELAY;
+	int state = 0, boot_mode_switch = 0;
+#endif
+
+	power_init();
+
+#if defined(CONFIG_FSL_ANDROID) && defined(CONFIG_MXC_KPD)
+	mxc_kpp_init();
+
+	puts("Press home + power to enter recovery mode ...\n");
+
+	while ((switch_delay > 0) && (!boot_mode_switch)) {
+		int i;
+
+		--switch_delay;
+		/* delay 100 * 10ms */
+		for (i = 0; !boot_mode_switch && i < 100; ++i) {
+			/* A state machine to scan home + power key */
+			/* Check for home + power */
+			if (mxc_kpp_getc(&key_info)) {
+				switch (state) {
+				case 0:
+					/* First press */
+					if (TEST_HOME_KEY_DEPRESS(key_info.val, key_info.evt)) {
+						/* Press Home */
+						state = 1;
+					} else if (TEST_POWER_KEY_DEPRESS(key_info.val, key_info.evt)) {
+						state = 2;
+					} else {
+						state = 0;
+					}
+					break;
+				case 1:
+					/* Home is already pressed, try to detect Power */
+					if (TEST_POWER_KEY_DEPRESS(key_info.val,
+						    key_info.evt)) {
+						boot_mode_switch = 1;
+					} else {
+					    if (TEST_HOME_KEY_DEPRESS(key_info.val,
+							key_info.evt))
+						state = 1;
+					    else
+						state = 0;
+					}
+					break;
+				case 2:
+					/* Power is already pressed, try to detect Home */
+					if (TEST_HOME_KEY_DEPRESS(key_info.val,
+						    key_info.evt)) {
+						boot_mode_switch = 1;
+					} else {
+						if (TEST_POWER_KEY_DEPRESS(key_info.val,
+							    key_info.evt))
+							state = 2;
+						else
+							state = 0;
+					}
+					break;
+				default:
+					break;
+				}
+
+				if (1 == boot_mode_switch) {
+					printf("Boot mode switched to recovery mode!\n");
+					/* Set env to recovery mode */
+					setenv("bootargs_android", CONFIG_ANDROID_RECOVERY_BOOTARGS);
+					setenv("bootcmd_android", CONFIG_ANDROID_RECOVERY_BOOTCMD);
+					setenv("bootcmd", "run bootcmd_android");
+					break;
+				}
+			}
+		}
+		for (i = 0; i < 100; ++i)
+			udelay(10000);
+	}
+
+	/* Check CONFIG_ANDROID_RECOVERY_CMD_FILE to 
+	judge if need to enter recovery mode */
+	{
+		char *cmd_file_patch;
+		block_dev_desc_t *dev_desc = NULL;
+		disk_partition_t info;
+		ulong part_length;
+		int filelen;
+
+		cmd_file_patch = getenv("android_recovery_cmd_file");
+		if (!cmd_file_patch)
+			cmd_file_patch = CONFIG_ANDROID_RECOVERY_CMD_FILE;
+
+		dev_desc = get_dev("mmc", 0);
+
+		if (dev_desc==NULL) {
+			puts("** Block device MMC 0 not supported\n");
+			return 1;
+		}
+
+		if (get_partition_info (dev_desc, 
+				CONFIG_ANDROID_CACHE_PARTITION,
+				&info)) {
+			printf("** Bad partition %d **\n",
+				CONFIG_ANDROID_CACHE_PARTITION);
+			return 1;
+		}
+
+		if ((part_length = \
+			ext2fs_set_blk_dev(dev_desc, 
+				CONFIG_ANDROID_CACHE_PARTITION)) == 0) {
+			printf("** Bad partition - mmc 0:%d **\n",
+				CONFIG_ANDROID_CACHE_PARTITION);
+			ext2fs_close();
+			return 1;
+		}
+
+		if (!ext2fs_mount(part_length)) {
+			printf ("** Bad ext2 partition or disk - mmc 0:%d **\n",
+				CONFIG_ANDROID_CACHE_PARTITION);
+			ext2fs_close();
+			return 1;
+		}
+
+		filelen = ext2fs_open(CONFIG_ANDROID_RECOVERY_CMD_FILE);
+
+		if (filelen > 0) {
+			puts("Recovery command file founded, switch to recovery mode!\n");
+			/* Set env to recovery mode */
+			setenv("bootargs_android", CONFIG_ANDROID_RECOVERY_BOOTARGS);
+			setenv("bootcmd_android", CONFIG_ANDROID_RECOVERY_BOOTCMD);
+			setenv("bootcmd", "run bootcmd_android");
+		} else {
+			puts("Recovery command file not found, normal boot!\n");
+		}
+
+		ext2fs_close();
+	}
+	
+#endif
+
+	return 0;
+}
+#endif
+
+int checkboard(void)
+{
+	printf("Board: MX51 BABBAGE ");
+
+	if (system_rev & CHIP_REV_2_5) {
+		printf("2.5 [");
+	} else if (system_rev & CHIP_REV_2_0) {
+		printf("2.0 [");
+	} else if (system_rev & CHIP_REV_1_1) {
+		printf("1.1 [");
+	} else {
+		printf("1.0 [");
+	}
+
+	switch (__REG(SRC_BASE_ADDR + 0x8)) {
+	case 0x0001:
+		printf("POR");
+		break;
+	case 0x0009:
+		printf("RST");
+		break;
+	case 0x0010:
+	case 0x0011:
+		printf("WDOG");
+		break;
+	default:
+		printf("unknown");
+	}
+	printf("]\n");
+	return 0;
+}
+
diff --git a/board/freescale/mx51_bbg/u-boot.lds b/board/freescale/mx51_bbg/u-boot.lds
new file mode 100644
index 0000000..9ece8af
--- /dev/null
+++ b/board/freescale/mx51_bbg/u-boot.lds
@@ -0,0 +1,73 @@
+/*
+ * January 2004 - Changed to support H4 device
+ * Copyright (c) 2004 Texas Instruments
+ *
+ * (C) Copyright 2002
+ * Gary Jennejohn, DENX Software Engineering, <gj@denx.de>
+ *
+ * (C) Copyright 2009 Freescale Semiconductor, Inc.
+ *
+ * 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
+ */
+
+OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
+OUTPUT_ARCH(arm)
+ENTRY(_start)
+SECTIONS
+{
+	. = 0x00000000;
+
+	. = ALIGN(4);
+	.text	   :
+	{
+	  /* WARNING - the following is hand-optimized to fit within	*/
+	  /* the sector layout of our flash chips!	XXX FIXME XXX	*/
+	  board/freescale/mx51_bbg/flash_header.o	(.text.flasheader)
+	  cpu/arm_cortexa8/start.o
+	  board/freescale/mx51_bbg/libmx51_bbg.a	(.text)
+	  lib_arm/libarm.a		(.text)
+	  net/libnet.a			(.text)
+	  drivers/mtd/libmtd.a		(.text)
+	  drivers/mmc/libmmc.a		(.text)
+
+	  . = DEFINED(env_offset) ? env_offset : .;
+	  common/env_embedded.o(.text)
+
+	  *(.text)
+	}
+
+	. = ALIGN(4);
+	.rodata : { *(.rodata) }
+
+	. = ALIGN(4);
+	.data : { *(.data) }
+
+	. = ALIGN(4);
+	.got : { *(.got) }
+
+	. = .;
+	__u_boot_cmd_start = .;
+	.u_boot_cmd : { *(.u_boot_cmd) }
+	__u_boot_cmd_end = .;
+
+	. = ALIGN(4);
+	__bss_start = .;
+	.bss : { *(.bss) }
+	_end = .;
+}