arm: Tegra2: Add basic NVIDIA Tegra2 SoC support

Signed-off-by: Tom Warren <twarren@nvidia.com>
14 years ago · 3f82b1d3ab
parent 9b6442f99c
commit 3f82b1d3ab
13 changed files with 1054 additions and 0 deletions
--- a/arch/arm/cpu/armv7/tegra2/Makefile
+++ b/arch/arm/cpu/armv7/tegra2/Makefile
@ -0,0 +1,48 @@
+#
+# (C) Copyright 2010,2011 Nvidia Corporation.
+#
+# (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	=  $(obj)lib$(SOC).o
+
+SOBJS	:= lowlevel_init.o
+COBJS	:= board.o sys_info.o timer.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
+
+#########################################################################
--- a/arch/arm/cpu/armv7/tegra2/board.c
+++ b/arch/arm/cpu/armv7/tegra2/board.c
@ -0,0 +1,88 @@
+/*
+ *  (C) Copyright 2010,2011
+ *  NVIDIA Corporation <www.nvidia.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/io.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/tegra2.h>
+#include <asm/arch/pmc.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * Boot ROM initializes the odmdata in APBDEV_PMC_SCRATCH20_0,
+ * so we are using this value to identify memory size.
+ */
+
+unsigned int query_sdram_size(void)
+{
+	struct pmc_ctlr *const pmc = (struct pmc_ctlr *)NV_PA_PMC_BASE;
+	u32 reg;
+
+	reg = readl(&pmc->pmc_scratch20);
+	debug("pmc->pmc_scratch20 (ODMData) = 0x%08lX\n", reg);
+
+	/* bits 31:28 in OdmData are used for RAM size  */
+	switch ((reg) >> 28) {
+	case 1:
+		return 0x10000000;	/* 256 MB */
+	case 2:
+		return 0x20000000;	/* 512 MB */
+	case 3:
+	default:
+		return 0x40000000;	/* 1GB */
+	}
+}
+
+void s_init(void)
+{
+#ifndef CONFIG_ICACHE_OFF
+	icache_enable();
+#endif
+	invalidate_dcache();
+}
+
+int dram_init(void)
+{
+	unsigned long rs;
+
+	/* We do not initialise DRAM here. We just query the size */
+	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
+	gd->bd->bi_dram[0].size = gd->ram_size = query_sdram_size();
+
+	/* Now check it dynamically */
+	rs = get_ram_size(CONFIG_SYS_SDRAM_BASE, gd->ram_size);
+	if (rs) {
+		printf("dynamic ram_size = %lu\n", rs);
+		gd->bd->bi_dram[0].size = gd->ram_size = rs;
+	}
+	return 0;
+}
+
+#ifdef CONFIG_DISPLAY_BOARDINFO
+int checkboard(void)
+{
+	printf("Board: %s\n", sysinfo.board_string);
+	return 0;
+}
+#endif	/* CONFIG_DISPLAY_BOARDINFO */
--- a/arch/arm/cpu/armv7/tegra2/config.mk
+++ b/arch/arm/cpu/armv7/tegra2/config.mk
@ -0,0 +1,28 @@
+#
+# (C) Copyright 2010,2011
+# NVIDIA Corporation <www.nvidia.com>
+#
+# (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
+#
+
+# Use ARMv4 for Tegra2 - initial code runs on the AVP, which is an ARM7TDI.
+PLATFORM_CPPFLAGS += -march=armv4
--- a/arch/arm/cpu/armv7/tegra2/lowlevel_init.S
+++ b/arch/arm/cpu/armv7/tegra2/lowlevel_init.S
@ -0,0 +1,65 @@
+/*
+ * SoC-specific setup info
+ *
+ * (C) Copyright 2010,2011
+ * NVIDIA Corporation <www.nvidia.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 <config.h>
+#include <version.h>
+
+_TEXT_BASE:
+	.word	CONFIG_SYS_TEXT_BASE	@ sdram load addr from config file
+
+.global invalidate_dcache
+invalidate_dcache:
+	mov pc, lr
+
+	.align	5
+.global reset_cpu
+reset_cpu:
+	ldr	r1, rstctl			@ get addr for global reset
+						@ reg
+	ldr	r3, [r1]
+	orr	r3, r3, #0x10
+	str	r3, [r1]			@ force reset
+	mov	r0, r0
+_loop_forever:
+	b	_loop_forever
+rstctl:
+	.word	PRM_RSTCTRL
+
+.globl lowlevel_init
+lowlevel_init:
+	ldr	sp, SRAM_STACK
+	str	ip, [sp]
+	mov	ip, lr
+	bl	s_init				@ go setup pll, mux & memory
+	ldr	ip, [sp]
+	mov	lr, ip
+
+	mov	pc, lr				@ back to arch calling code
+
+	@ the literal pools origin
+	.ltorg
+
+SRAM_STACK:
+	.word LOW_LEVEL_SRAM_STACK
--- a/arch/arm/cpu/armv7/tegra2/sys_info.c
+++ b/arch/arm/cpu/armv7/tegra2/sys_info.c
@ -0,0 +1,35 @@
+/*
+ * (C) Copyright 2010,2011
+ * NVIDIA Corporation <www.nvidia.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>
+
+#ifdef CONFIG_DISPLAY_CPUINFO
+/* Print CPU information */
+int print_cpuinfo(void)
+{
+	puts("TEGRA2\n");
+
+	/* TBD: Add printf of major/minor rev info, stepping, etc. */
+	return 0;
+}
+#endif	/* CONFIG_DISPLAY_CPUINFO */
--- a/arch/arm/cpu/armv7/tegra2/timer.c
+++ b/arch/arm/cpu/armv7/tegra2/timer.c
@ -0,0 +1,122 @@
+/*
+ * (C) Copyright 2010,2011
+ * NVIDIA Corporation <www.nvidia.com>
+ *
+ * (C) Copyright 2008
+ * Texas Instruments
+ *
+ * Richard Woodruff <r-woodruff2@ti.com>
+ * Syed Moahmmed Khasim <khasim@ti.com>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ * Alex Zuepke <azu@sysgo.de>
+ *
+ * (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
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/tegra2.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct timerus *timer_base = (struct timerus *)NV_PA_TMRUS_BASE;
+
+/* counter runs at 1MHz */
+#define TIMER_CLK	(1000000)
+#define TIMER_LOAD_VAL	0xffffffff
+
+/* timer without interrupts */
+void reset_timer(void)
+{
+	reset_timer_masked();
+}
+
+ulong get_timer(ulong base)
+{
+	return get_timer_masked() - base;
+}
+
+void set_timer(ulong t)
+{
+	gd->tbl = t;
+}
+
+/* delay x useconds */
+void __udelay(unsigned long usec)
+{
+	long tmo = usec * (TIMER_CLK / 1000) / 1000;
+	unsigned long now, last = readl(&timer_base->cntr_1us);
+
+	while (tmo > 0) {
+		now = readl(&timer_base->cntr_1us);
+		if (last > now) /* count up timer overflow */
+			tmo -= TIMER_LOAD_VAL - last + now;
+		else
+			tmo -= now - last;
+		last = now;
+	}
+}
+
+void reset_timer_masked(void)
+{
+	/* reset time, capture current incrementer value time */
+	gd->lastinc = readl(&timer_base->cntr_1us) / (TIMER_CLK/CONFIG_SYS_HZ);
+	gd->tbl = 0;		/* start "advancing" time stamp from 0 */
+}
+
+ulong get_timer_masked(void)
+{
+	ulong now;
+
+	/* current tick value */
+	now = readl(&timer_base->cntr_1us) / (TIMER_CLK / CONFIG_SYS_HZ);
+
+	if (now >= gd->lastinc)	/* normal mode (non roll) */
+		/* move stamp forward with absolute diff ticks */
+		gd->tbl += (now - gd->lastinc);
+	else	/* we have rollover of incrementer */
+		gd->tbl += ((TIMER_LOAD_VAL / (TIMER_CLK / CONFIG_SYS_HZ))
+				- gd->lastinc) + now;
+	gd->lastinc = now;
+	return gd->tbl;
+}
+
+/*
+ * This function is derived from PowerPC code (read timebase as long long).
+ * On ARM it just returns the timer value.
+ */
+unsigned long long get_ticks(void)
+{
+	return get_timer(0);
+}
+
+/*
+ * This function is derived from PowerPC code (timebase clock frequency).
+ * On ARM it returns the number of timer ticks per second.
+ */
+ulong get_tbclk(void)
+{
+	return CONFIG_SYS_HZ;
+}
--- a/arch/arm/include/asm/arch-tegra2/clk_rst.h
+++ b/arch/arm/include/asm/arch-tegra2/clk_rst.h
@ -0,0 +1,165 @@
+/*
+ *  (C) Copyright 2010,2011
+ *  NVIDIA Corporation <www.nvidia.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 _CLK_RST_H_
+#define _CLK_RST_H_
+
+/* Clock/Reset Controller (CLK_RST_CONTROLLER_) regs */
+struct clk_rst_ctlr {
+	uint crc_rst_src;		/* _RST_SOURCE_0,	0x00 */
+	uint crc_rst_dev_l;		/* _RST_DEVICES_L_0,	0x04 */
+	uint crc_rst_dev_h;		/* _RST_DEVICES_H_0,	0x08 */
+	uint crc_rst_dev_u;		/* _RST_DEVICES_U_0,	0x0C */
+	uint crc_clk_out_enb_l;		/* _CLK_OUT_ENB_L_0,	0x10 */
+	uint crc_clk_out_enb_h;		/* _CLK_OUT_ENB_H_0,	0x14 */
+	uint crc_clk_out_enb_u;		/* _CLK_OUT_ENB_U_0,	0x18 */
+	uint crc_reserved0;		/* reserved_0,		0x1C */
+	uint crc_cclk_brst_pol;		/* _CCLK_BURST_POLICY_0,0x20 */
+	uint crc_super_cclk_div;	/* _SUPER_CCLK_DIVIDER_0,0x24 */
+	uint crc_sclk_brst_pol;		/* _SCLK_BURST_POLICY_0, 0x28 */
+	uint crc_super_sclk_div;	/* _SUPER_SCLK_DIVIDER_0,0x2C */
+	uint crc_clk_sys_rate;		/* _CLK_SYSTEM_RATE_0,	0x30 */
+	uint crc_prog_dly_clk;		/* _PROG_DLY_CLK_0,	0x34 */
+	uint crc_aud_sync_clk_rate;	/* _AUDIO_SYNC_CLK_RATE_0,0x38 */
+	uint crc_reserved1;		/* reserved_1,		0x3C */
+	uint crc_cop_clk_skip_plcy;	/* _COP_CLK_SKIP_POLICY_0,0x40 */
+	uint crc_clk_mask_arm;		/* _CLK_MASK_ARM_0,	0x44 */
+	uint crc_misc_clk_enb;		/* _MISC_CLK_ENB_0,	0x48 */
+	uint crc_clk_cpu_cmplx;		/* _CLK_CPU_CMPLX_0,	0x4C */
+	uint crc_osc_ctrl;		/* _OSC_CTRL_0,		0x50 */
+	uint crc_pll_lfsr;		/* _PLL_LFSR_0,		0x54 */
+	uint crc_osc_freq_det;		/* _OSC_FREQ_DET_0,	0x58 */
+	uint crc_osc_freq_det_stat;	/* _OSC_FREQ_DET_STATUS_0,0x5C */
+	uint crc_reserved2[8];		/* reserved_2[8],	0x60-7C */
+
+	uint crc_pllc_base;		/* _PLLC_BASE_0,	0x80 */
+	uint crc_pllc_out;		/* _PLLC_OUT_0,		0x84 */
+	uint crc_reserved3;		/* reserved_3,		0x88 */
+	uint crc_pllc_misc;		/* _PLLC_MISC_0,	0x8C */
+
+	uint crc_pllm_base;		/* _PLLM_BASE_0,	0x90 */
+	uint crc_pllm_out;		/* _PLLM_OUT_0,		0x94 */
+	uint crc_reserved4;		/* reserved_4,		0x98 */
+	uint crc_pllm_misc;		/* _PLLM_MISC_0,	0x9C */
+
+	uint crc_pllp_base;		/* _PLLP_BASE_0,	0xA0 */
+	uint crc_pllp_outa;		/* _PLLP_OUTA_0,	0xA4 */
+	uint crc_pllp_outb;		/* _PLLP_OUTB_0,	0xA8 */
+	uint crc_pllp_misc;		/* _PLLP_MISC_0,	0xAC */
+
+	uint crc_plla_base;		/* _PLLA_BASE_0,	0xB0 */
+	uint crc_plla_out;		/* _PLLA_OUT_0,		0xB4 */
+	uint crc_reserved5;		/* reserved_5,		0xB8 */
+	uint crc_plla_misc;		/* _PLLA_MISC_0,	0xBC */
+
+	uint crc_pllu_base;		/* _PLLU_BASE_0,	0xC0 */
+	uint crc_reserved6;		/* _reserved_6,		0xC4 */
+	uint crc_reserved7;		/* _reserved_7,		0xC8 */
+	uint crc_pllu_misc;		/* _PLLU_MISC_0,	0xCC */
+
+	uint crc_plld_base;		/* _PLLD_BASE_0,	0xD0 */
+	uint crc_reserved8;		/* _reserved_8,		0xD4 */
+	uint crc_reserved9;		/* _reserved_9,		0xD8 */
+	uint crc_plld_misc;		/* _PLLD_MISC_0,	0xDC */
+
+	uint crc_pllx_base;		/* _PLLX_BASE_0,	0xE0 */
+	uint crc_pllx_misc;		/* _PLLX_MISC_0,	0xE4 */
+
+	uint crc_plle_base;		/* _PLLE_BASE_0,	0xE8 */
+	uint crc_plle_misc;		/* _PLLE_MISC_0,	0xEC */
+
+	uint crc_plls_base;		/* _PLLS_BASE_0,	0xF0 */
+	uint crc_plls_misc;		/* _PLLS_MISC_0,	0xF4 */
+	uint crc_reserved10;		/* _reserved_10,	0xF8 */
+	uint crc_reserved11;		/* _reserved_11,	0xFC */
+
+	uint crc_clk_src_i2s1;		/*_I2S1_0,		0x100 */
+	uint crc_clk_src_i2s2;		/*_I2S2_0,		0x104 */
+	uint crc_clk_src_spdif_out;	/*_SPDIF_OUT_0,		0x108 */
+	uint crc_clk_src_spdif_in;	/*_SPDIF_IN_0,		0x10C */
+	uint crc_clk_src_pwm;		/*_PWM_0,		0x110 */
+	uint crc_clk_src_spi1;		/*_SPI1_0,		0x114 */
+	uint crc_clk_src_sbc2;		/*_SBC2_0,		0x118 */
+	uint crc_clk_src_sbc3;		/*_SBC3_0,		0x11C */
+	uint crc_clk_src_xio;		/*_XIO_0,		0x120 */
+	uint crc_clk_src_i2c1;		/*_I2C1_0,		0x124 */
+	uint crc_clk_src_dvc_i2c;	/*_DVC_I2C_0,		0x128 */
+	uint crc_clk_src_twc;		/*_TWC_0,		0x12C */
+	uint crc_reserved12;		/*			0x130 */
+	uint crc_clk_src_sbc1;		/*_SBC1_0,		0x134 */
+	uint crc_clk_src_disp1;		/*_DISP1_0,		0x138 */
+	uint crc_clk_src_disp2;		/*_DISP2_0,		0x13C */
+	uint crc_clk_src_cve;		/*_CVE_0,		0x140 */
+	uint crc_clk_src_ide;		/*_IDE_0,		0x144 */
+	uint crc_clk_src_vi;		/*_VI_0,		0x148 */
+	uint crc_reserved13;		/*			0x14C */
+	uint crc_clk_src_sdmmc1;	/*_SDMMC1_0,		0x150 */
+	uint crc_clk_src_sdmmc2;	/*_SDMMC2_0,		0x154 */
+	uint crc_clk_src_g3d;		/*_G3D_0,		0x158 */
+	uint crc_clk_src_g2d;		/*_G2D_0,		0x15C */
+	uint crc_clk_src_ndflash;	/*_NDFLASH_0,		0x160 */
+	uint crc_clk_src_sdmmc4;	/*_SDMMC4_0,		0x164 */
+	uint crc_clk_src_vfir;		/*_VFIR_0,		0x168 */
+	uint crc_clk_src_epp;		/*_EPP_0,		0x16C */
+	uint crc_clk_src_mp3;		/*_MPE_0,		0x170 */
+	uint crc_clk_src_mipi;		/*_MIPI_0,		0x174 */
+	uint crc_clk_src_uarta;		/*_UARTA_0,		0x178 */
+	uint crc_clk_src_uartb;		/*_UARTB_0,		0x17C */
+	uint crc_clk_src_host1x;	/*_HOST1X_0,		0x180 */
+	uint crc_reserved14;		/*			0x184 */
+	uint crc_clk_src_tvo;		/*_TVO_0,		0x188 */
+	uint crc_clk_src_hdmi;		/*_HDMI_0,		0x18C */
+	uint crc_reserved15;		/*			0x190 */
+	uint crc_clk_src_tvdac;		/*_TVDAC_0,		0x194 */
+	uint crc_clk_src_i2c2;		/*_I2C2_0,		0x198 */
+	uint crc_clk_src_emc;		/*_EMC_0,		0x19C */
+	uint crc_clk_src_uartc;		/*_UARTC_0,		0x1A0 */
+	uint crc_reserved16;		/*			0x1A4 */
+	uint crc_clk_src_vi_sensor;	/*_VI_SENSOR_0,		0x1A8 */
+	uint crc_reserved17;		/*			0x1AC */
+	uint crc_reserved18;		/*			0x1B0 */
+	uint crc_clk_src_sbc4;		/*_SBC4_0,		0x1B4 */
+	uint crc_clk_src_i2c3;		/*_I2C3_0,		0x1B8 */
+	uint crc_clk_src_sdmmc3;	/*_SDMMC3_0,		0x1BC */
+	uint crc_clk_src_uartd;		/*_UARTD_0,		0x1C0 */
+	uint crc_clk_src_uarte;		/*_UARTE_0,		0x1C4 */
+	uint crc_clk_src_vde;		/*_VDE_0,		0x1C8 */
+	uint crc_clk_src_owr;		/*_OWR_0,		0x1CC */
+	uint crc_clk_src_nor;		/*_NOR_0,		0x1D0 */
+	uint crc_clk_src_csite;		/*_CSITE_0,		0x1D4 */
+	uint crc_reserved19[9];		/*			0x1D8-1F8 */
+	uint crc_clk_src_osc;		/*_OSC_0,		0x1FC */
+};
+
+#define PLL_BYPASS		(1 << 31)
+#define PLL_ENABLE		(1 << 30)
+#define PLL_BASE_OVRRIDE	(1 << 28)
+#define PLL_DIVP		(1 << 20)	/* post divider, b22:20 */
+#define PLL_DIVM		0x0C		/* input divider, b4:0 */
+
+#define SWR_UARTD_RST		(1 << 2)
+#define CLK_ENB_UARTD		(1 << 2)
+#define SWR_UARTA_RST		(1 << 6)
+#define CLK_ENB_UARTA		(1 << 6)
+
+#endif	/* CLK_RST_H */
--- a/arch/arm/include/asm/arch-tegra2/pinmux.h
+++ b/arch/arm/include/asm/arch-tegra2/pinmux.h
@ -0,0 +1,55 @@
+/*
+ *  (C) Copyright 2010,2011
+ *  NVIDIA Corporation <www.nvidia.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 _PINMUX_H_
+#define _PINMUX_H_
+
+/* APB MISC Pin Mux and Tristate (APB_MISC_PP_) registers */
+struct pmux_tri_ctlr {
+	uint pmt_reserved0;		/* ABP_MISC_PP_ reserved offset 00 */
+	uint pmt_reserved1;		/* ABP_MISC_PP_ reserved offset 04 */
+	uint pmt_strap_opt_a;		/* _STRAPPING_OPT_A_0, offset 08 */
+	uint pmt_reserved2;		/* ABP_MISC_PP_ reserved offset 0C */
+	uint pmt_reserved3;		/* ABP_MISC_PP_ reserved offset 10 */
+	uint pmt_tri_a;			/* _TRI_STATE_REG_A_0, offset 14 */
+	uint pmt_tri_b;			/* _TRI_STATE_REG_B_0, offset 18 */
+	uint pmt_tri_c;			/* _TRI_STATE_REG_C_0, offset 1C */
+	uint pmt_tri_d;			/* _TRI_STATE_REG_D_0, offset 20 */
+	uint pmt_cfg_ctl;		/* _CONFIG_CTL_0, offset 24 */
+
+	uint pmt_reserved[22];		/* ABP_MISC_PP_ reserved offs 28-7C */
+
+	uint pmt_ctl_a;			/* _PIN_MUX_CTL_A_0, offset 80 */
+	uint pmt_ctl_b;			/* _PIN_MUX_CTL_B_0, offset 84 */
+	uint pmt_ctl_c;			/* _PIN_MUX_CTL_C_0, offset 88 */
+	uint pmt_ctl_d;			/* _PIN_MUX_CTL_D_0, offset 8C */
+	uint pmt_ctl_e;			/* _PIN_MUX_CTL_E_0, offset 90 */
+	uint pmt_ctl_f;			/* _PIN_MUX_CTL_F_0, offset 94 */
+	uint pmt_ctl_g;			/* _PIN_MUX_CTL_G_0, offset 98 */
+};
+
+#define Z_GMC			(1 << 29)
+#define Z_IRRX			(1 << 20)
+#define Z_IRTX			(1 << 19)
+
+#endif	/* PINMUX_H */
--- a/arch/arm/include/asm/arch-tegra2/pmc.h
+++ b/arch/arm/include/asm/arch-tegra2/pmc.h
@ -0,0 +1,124 @@
+/*
+ *  (C) Copyright 2010,2011
+ *  NVIDIA Corporation <www.nvidia.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 _PMC_H_
+#define _PMC_H_
+
+/* Power Management Controller (APBDEV_PMC_) registers */
+struct pmc_ctlr {
+	uint pmc_cntrl;			/* _CNTRL_0, offset 00 */
+	uint pmc_sec_disable;		/* _SEC_DISABLE_0, offset 04 */
+	uint pmc_pmc_swrst;		/* _PMC_SWRST_0, offset 08 */
+	uint pmc_wake_mask;		/* _WAKE_MASK_0, offset 0C */
+	uint pmc_wake_lvl;		/* _WAKE_LVL_0, offset 10 */
+	uint pmc_wake_status;		/* _WAKE_STATUS_0, offset 14 */
+	uint pmc_sw_wake_status;	/* _SW_WAKE_STATUS_0, offset 18 */
+	uint pmc_dpd_pads_oride;	/* _DPD_PADS_ORIDE_0, offset 1C */
+	uint pmc_dpd_sample;		/* _DPD_PADS_SAMPLE_0, offset 20 */
+	uint pmc_dpd_enable;		/* _DPD_PADS_ENABLE_0, offset 24 */
+	uint pmc_pwrgate_timer_off;	/* _PWRGATE_TIMER_OFF_0, offset 28 */
+	uint pmc_pwrgate_timer_on;	/* _PWRGATE_TIMER_ON_0, offset 2C */
+	uint pmc_pwrgate_toggle;	/* _PWRGATE_TOGGLE_0, offset 30 */
+	uint pmc_remove_clamping;	/* _REMOVE_CLAMPING_CMD_0, offset 34 */
+	uint pmc_pwrgate_status;	/* _PWRGATE_STATUS_0, offset 38 */
+	uint pmc_pwrgood_timer;		/* _PWRGOOD_TIMER_0, offset 3C */
+	uint pmc_blink_timer;		/* _BLINK_TIMER_0, offset 40 */
+	uint pmc_no_iopower;		/* _NO_IOPOWER_0, offset 44 */
+	uint pmc_pwr_det;		/* _PWR_DET_0, offset 48 */
+	uint pmc_pwr_det_latch;		/* _PWR_DET_LATCH_0, offset 4C */
+
+	uint pmc_scratch0;		/* _SCRATCH0_0, offset 50 */
+	uint pmc_scratch1;		/* _SCRATCH1_0, offset 54 */
+	uint pmc_scratch2;		/* _SCRATCH2_0, offset 58 */
+	uint pmc_scratch3;		/* _SCRATCH3_0, offset 5C */
+	uint pmc_scratch4;		/* _SCRATCH4_0, offset 60 */
+	uint pmc_scratch5;		/* _SCRATCH5_0, offset 64 */
+	uint pmc_scratch6;		/* _SCRATCH6_0, offset 68 */
+	uint pmc_scratch7;		/* _SCRATCH7_0, offset 6C */
+	uint pmc_scratch8;		/* _SCRATCH8_0, offset 70 */
+	uint pmc_scratch9;		/* _SCRATCH9_0, offset 74 */
+	uint pmc_scratch10;		/* _SCRATCH10_0, offset 78 */
+	uint pmc_scratch11;		/* _SCRATCH11_0, offset 7C */
+	uint pmc_scratch12;		/* _SCRATCH12_0, offset 80 */
+	uint pmc_scratch13;		/* _SCRATCH13_0, offset 84 */
+	uint pmc_scratch14;		/* _SCRATCH14_0, offset 88 */
+	uint pmc_scratch15;		/* _SCRATCH15_0, offset 8C */
+	uint pmc_scratch16;		/* _SCRATCH16_0, offset 90 */
+	uint pmc_scratch17;		/* _SCRATCH17_0, offset 94 */
+	uint pmc_scratch18;		/* _SCRATCH18_0, offset 98 */
+	uint pmc_scratch19;		/* _SCRATCH19_0, offset 9C */
+	uint pmc_scratch20;		/* _SCRATCH20_0, offset A0 */
+	uint pmc_scratch21;		/* _SCRATCH21_0, offset A4 */
+	uint pmc_scratch22;		/* _SCRATCH22_0, offset A8 */
+	uint pmc_scratch23;		/* _SCRATCH23_0, offset AC */
+
+	uint pmc_secure_scratch0;	/* _SECURE_SCRATCH0_0, offset B0 */
+	uint pmc_secure_scratch1;	/* _SECURE_SCRATCH1_0, offset B4 */
+	uint pmc_secure_scratch2;	/* _SECURE_SCRATCH2_0, offset B8 */
+	uint pmc_secure_scratch3;	/* _SECURE_SCRATCH3_0, offset BC */
+	uint pmc_secure_scratch4;	/* _SECURE_SCRATCH4_0, offset C0 */
+	uint pmc_secure_scratch5;	/* _SECURE_SCRATCH5_0, offset C4 */
+
+	uint pmc_cpupwrgood_timer;	/* _CPUPWRGOOD_TIMER_0, offset C8 */
+	uint pmc_cpupwroff_timer;	/* _CPUPWROFF_TIMER_0, offset CC */
+	uint pmc_pg_mask;		/* _PG_MASK_0, offset D0 */
+	uint pmc_pg_mask_1;		/* _PG_MASK_1_0, offset D4 */
+	uint pmc_auto_wake_lvl;		/* _AUTO_WAKE_LVL_0, offset D8 */
+	uint pmc_auto_wake_lvl_mask;	/* _AUTO_WAKE_LVL_MASK_0, offset DC */
+	uint pmc_wake_delay;		/* _WAKE_DELAY_0, offset E0 */
+	uint pmc_pwr_det_val;		/* _PWR_DET_VAL_0, offset E4 */
+	uint pmc_ddr_pwr;		/* _DDR_PWR_0, offset E8 */
+	uint pmc_usb_debounce_del;	/* _USB_DEBOUNCE_DEL_0, offset EC */
+	uint pmc_usb_ao;		/* _USB_AO_0, offset F0 */
+	uint pmc_crypto_op;		/* _CRYPTO_OP__0, offset F4 */
+	uint pmc_pllp_wb0_override;	/* _PLLP_WB0_OVERRIDE_0, offset F8 */
+
+	uint pmc_scratch24;		/* _SCRATCH24_0, offset FC */
+	uint pmc_scratch25;		/* _SCRATCH24_0, offset 100 */
+	uint pmc_scratch26;		/* _SCRATCH24_0, offset 104 */
+	uint pmc_scratch27;		/* _SCRATCH24_0, offset 108 */
+	uint pmc_scratch28;		/* _SCRATCH24_0, offset 10C */
+	uint pmc_scratch29;		/* _SCRATCH24_0, offset 110 */
+	uint pmc_scratch30;		/* _SCRATCH24_0, offset 114 */
+	uint pmc_scratch31;		/* _SCRATCH24_0, offset 118 */
+	uint pmc_scratch32;		/* _SCRATCH24_0, offset 11C */
+	uint pmc_scratch33;		/* _SCRATCH24_0, offset 120 */
+	uint pmc_scratch34;		/* _SCRATCH24_0, offset 124 */
+	uint pmc_scratch35;		/* _SCRATCH24_0, offset 128 */
+	uint pmc_scratch36;		/* _SCRATCH24_0, offset 12C */
+	uint pmc_scratch37;		/* _SCRATCH24_0, offset 130 */
+	uint pmc_scratch38;		/* _SCRATCH24_0, offset 134 */
+	uint pmc_scratch39;		/* _SCRATCH24_0, offset 138 */
+	uint pmc_scratch40;		/* _SCRATCH24_0, offset 13C */
+	uint pmc_scratch41;		/* _SCRATCH24_0, offset 140 */
+	uint pmc_scratch42;		/* _SCRATCH24_0, offset 144 */
+
+	uint pmc_bo_mirror0;		/* _BOUNDOUT_MIRROR0_0, offset 148 */
+	uint pmc_bo_mirror1;		/* _BOUNDOUT_MIRROR1_0, offset 14C */
+	uint pmc_bo_mirror2;		/* _BOUNDOUT_MIRROR2_0, offset 150 */
+	uint pmc_sys_33v_en;		/* _SYS_33V_EN_0, offset 154 */
+	uint pmc_bo_mirror_access;	/* _BOUNDOUT_MIRROR_ACCESS_0, off158 */
+	uint pmc_gate;			/* _GATE_0, offset 15C */
+};
+
+#endif	/* PMC_H */
--- a/arch/arm/include/asm/arch-tegra2/sys_proto.h
+++ b/arch/arm/include/asm/arch-tegra2/sys_proto.h
@ -0,0 +1,35 @@
+/*
+ * (C) Copyright 2010,2011
+ * NVIDIA Corporation <www.nvidia.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 _SYS_PROTO_H_
+#define _SYS_PROTO_H_
+
+struct tegra2_sysinfo {
+	char *board_string;
+};
+
+void invalidate_dcache(void);
+
+extern const struct tegra2_sysinfo sysinfo;
+
+#endif
--- a/arch/arm/include/asm/arch-tegra2/tegra2.h
+++ b/arch/arm/include/asm/arch-tegra2/tegra2.h
@ -0,0 +1,49 @@
+/*
+ * (C) Copyright 2010,2011
+ * NVIDIA Corporation <www.nvidia.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 _TEGRA2_H_
+#define _TEGRA2_H_
+
+#define NV_PA_SDRAM_BASE	0x00000000
+#define NV_PA_TMRUS_BASE	0x60005010
+#define NV_PA_CLK_RST_BASE	0x60006000
+#define NV_PA_APB_MISC_BASE	0x70000000
+#define NV_PA_APB_UARTA_BASE	(NV_PA_APB_MISC_BASE + 0x6000)
+#define NV_PA_APB_UARTB_BASE	(NV_PA_APB_MISC_BASE + 0x6040)
+#define NV_PA_APB_UARTC_BASE	(NV_PA_APB_MISC_BASE + 0x6200)
+#define NV_PA_APB_UARTD_BASE	(NV_PA_APB_MISC_BASE + 0x6300)
+#define NV_PA_APB_UARTE_BASE	(NV_PA_APB_MISC_BASE + 0x6400)
+#define NV_PA_PMC_BASE		0x7000E400
+
+#define TEGRA2_SDRC_CS0		NV_PA_SDRAM_BASE
+#define LOW_LEVEL_SRAM_STACK	0x4000FFFC
+
+#ifndef __ASSEMBLY__
+struct timerus {
+	unsigned int cntr_1us;
+};
+#else  /* __ASSEMBLY__ */
+#define PRM_RSTCTRL		NV_PA_PMC_BASE
+#endif
+
+#endif	/* TEGRA2_H */
--- a/arch/arm/include/asm/arch-tegra2/uart.h
+++ b/arch/arm/include/asm/arch-tegra2/uart.h
@ -0,0 +1,47 @@
+/*
+ *  (C) Copyright 2010,2011
+ *  NVIDIA Corporation <www.nvidia.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 _UART_H_
+#define _UART_H_
+
+/* UART registers */
+struct uart_ctlr {
+	uint uart_thr_dlab_0;		/* UART_THR_DLAB_0_0, offset 00 */
+	uint uart_ier_dlab_0;		/* UART_IER_DLAB_0_0, offset 04 */
+	uint uart_iir_fcr;		/* UART_IIR_FCR_0, offset 08 */
+	uint uart_lcr;			/* UART_LCR_0, offset 0C */
+	uint uart_mcr;			/* UART_MCR_0, offset 10 */
+	uint uart_lsr;			/* UART_LSR_0, offset 14 */
+	uint uart_msr;			/* UART_MSR_0, offset 18 */
+	uint uart_spr;			/* UART_SPR_0, offset 1C */
+	uint uart_irda_csr;		/* UART_IRDA_CSR_0, offset 20 */
+	uint uart_reserved[6];		/* Reserved, unused, offset 24-38*/
+	uint uart_asr;			/* UART_ASR_0, offset 3C */
+};
+
+#define NVRM_PLLP_FIXED_FREQ_KHZ	216000
+#define NV_DEFAULT_DEBUG_BAUD		115200
+
+#define UART_FCR_TRIGGER_3	0x30	/* Mask for trigger set at 3 */
+
+#endif	/* UART_H */
--- a/board/nvidia/common/board.c
+++ b/board/nvidia/common/board.c
@ -0,0 +1,193 @@
+/*
+ *  (C) Copyright 2010,2011
+ *  NVIDIA Corporation <www.nvidia.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 <ns16550.h>
+#include <asm/io.h>
+#include <asm/arch/tegra2.h>
+#include <asm/arch/sys_proto.h>
+
+#include <asm/arch/clk_rst.h>
+#include <asm/arch/pinmux.h>
+#include <asm/arch/uart.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+const struct tegra2_sysinfo sysinfo = {
+	CONFIG_TEGRA2_BOARD_STRING
+};
+
+/*
+ * Routine: timer_init
+ * Description: init the timestamp and lastinc value
+ */
+int timer_init(void)
+{
+	reset_timer();
+	return 0;
+}
+
+/*
+ * Routine: clock_init_uart
+ * Description: init the PLL and clock for the UART(s)
+ */
+static void clock_init_uart(void)
+{
+	struct clk_rst_ctlr *clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
+	static int pllp_init_done;
+	u32 reg;
+
+	if (!pllp_init_done) {
+		/* Override pllp setup for 216MHz operation. */
+		reg = (PLL_BYPASS | PLL_BASE_OVRRIDE | PLL_DIVP);
+		reg |= (((NVRM_PLLP_FIXED_FREQ_KHZ/500) << 8) | PLL_DIVM);
+		writel(reg, &clkrst->crc_pllp_base);
+
+		reg |= PLL_ENABLE;
+		writel(reg, &clkrst->crc_pllp_base);
+
+		reg &= ~PLL_BYPASS;
+		writel(reg, &clkrst->crc_pllp_base);
+
+		pllp_init_done++;
+	}
+
+	/* Now do the UART reset/clock enable */
+#if defined(CONFIG_TEGRA2_ENABLE_UARTA)
+	/* Assert Reset to UART */
+	reg = readl(&clkrst->crc_rst_dev_l);
+	reg |= SWR_UARTA_RST;		/* SWR_UARTA_RST = 1 */
+	writel(reg, &clkrst->crc_rst_dev_l);
+
+	/* Enable clk to UART */
+	reg = readl(&clkrst->crc_clk_out_enb_l);
+	reg |= CLK_ENB_UARTA;		/* CLK_ENB_UARTA = 1 */
+	writel(reg, &clkrst->crc_clk_out_enb_l);
+
+	/* Enable pllp_out0 to UART */
+	reg = readl(&clkrst->crc_clk_src_uarta);
+	reg &= 0x3FFFFFFF;	/* UARTA_CLK_SRC = 00, PLLP_OUT0 */
+	writel(reg, &clkrst->crc_clk_src_uarta);
+
+	/* wait for 2us */
+	udelay(2);
+
+	/* De-assert reset to UART */
+	reg = readl(&clkrst->crc_rst_dev_l);
+	reg &= ~SWR_UARTA_RST;		/* SWR_UARTA_RST = 0 */
+	writel(reg, &clkrst->crc_rst_dev_l);
+#endif	/* CONFIG_TEGRA2_ENABLE_UARTA */
+#if defined(CONFIG_TEGRA2_ENABLE_UARTD)
+	/* Assert Reset to UART */
+	reg = readl(&clkrst->crc_rst_dev_u);
+	reg |= SWR_UARTD_RST;		/* SWR_UARTD_RST = 1 */
+	writel(reg, &clkrst->crc_rst_dev_u);
+
+	/* Enable clk to UART */
+	reg = readl(&clkrst->crc_clk_out_enb_u);
+	reg |= CLK_ENB_UARTD;		/* CLK_ENB_UARTD = 1 */
+	writel(reg, &clkrst->crc_clk_out_enb_u);
+
+	/* Enable pllp_out0 to UART */
+	reg = readl(&clkrst->crc_clk_src_uartd);
+	reg &= 0x3FFFFFFF;	/* UARTD_CLK_SRC = 00, PLLP_OUT0 */
+	writel(reg, &clkrst->crc_clk_src_uartd);
+
+	/* wait for 2us */
+	udelay(2);
+
+	/* De-assert reset to UART */
+	reg = readl(&clkrst->crc_rst_dev_u);
+	reg &= ~SWR_UARTD_RST;		/* SWR_UARTD_RST = 0 */
+	writel(reg, &clkrst->crc_rst_dev_u);
+#endif	/* CONFIG_TEGRA2_ENABLE_UARTD */
+}
+
+/*
+ * Routine: pin_mux_uart
+ * Description: setup the pin muxes/tristate values for the UART(s)
+ */
+static void pin_mux_uart(void)
+{
+	struct pmux_tri_ctlr *pmt = (struct pmux_tri_ctlr *)NV_PA_APB_MISC_BASE;
+	u32 reg;
+
+#if defined(CONFIG_TEGRA2_ENABLE_UARTA)
+	reg = readl(&pmt->pmt_ctl_c);
+	reg &= 0xFFF0FFFF;	/* IRRX_/IRTX_SEL [19:16] = 00 UARTA */
+	writel(reg, &pmt->pmt_ctl_c);
+
+	reg = readl(&pmt->pmt_tri_a);
+	reg &= ~Z_IRRX;		/* Z_IRRX = normal (0) */
+	reg &= ~Z_IRTX;		/* Z_IRTX = normal (0) */
+	writel(reg, &pmt->pmt_tri_a);
+#endif	/* CONFIG_TEGRA2_ENABLE_UARTA */
+#if defined(CONFIG_TEGRA2_ENABLE_UARTD)
+	reg = readl(&pmt->pmt_ctl_b);
+	reg &= 0xFFFFFFF3;	/* GMC_SEL [3:2] = 00, UARTD */
+	writel(reg, &pmt->pmt_ctl_b);
+
+	reg = readl(&pmt->pmt_tri_a);
+	reg &= ~Z_GMC;		/* Z_GMC = normal (0) */
+	writel(reg, &pmt->pmt_tri_a);
+#endif	/* CONFIG_TEGRA2_ENABLE_UARTD */
+}
+
+/*
+ * Routine: clock_init
+ * Description: Do individual peripheral clock reset/enables
+ */
+void clock_init(void)
+{
+	clock_init_uart();
+}
+
+/*
+ * Routine: pinmux_init
+ * Description: Do individual peripheral pinmux configs
+ */
+void pinmux_init(void)
+{
+	pin_mux_uart();
+}
+
+/*
+ * Routine: board_init
+ * Description: Early hardware init.
+ */
+int board_init(void)
+{
+	/* boot param addr */
+	gd->bd->bi_boot_params = (NV_PA_SDRAM_BASE + 0x100);
+	/* board id for Linux */
+	gd->bd->bi_arch_number = CONFIG_MACH_TYPE;
+
+	/* Initialize peripheral clocks */
+	clock_init();
+
+	/* Initialize periph pinmuxes */
+	pinmux_init();
+
+	return 0;
+}
+