Patchwork [U-Boot,V4,1/4] arm: Tegra2: Add basic NVIDIA Tegra2 SoC support

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Submitter Tom Warren
Date Jan. 21, 2011, 12:42 a.m.
Message ID <1295570542-10607-2-git-send-email-twarren@nvidia.com>
Download mbox | patch
Permalink /patch/79781/
State Superseded
Headers show

Comments

Tom Warren - Jan. 21, 2011, 12:42 a.m.
Signed-off-by: Tom Warren <twarren@nvidia.com>
---
Changes for V2:
	- Coding style cleanup
	- Move serial driver changes to separate patch
	- Use board/nvidia instead of board/tegra
	- Remove TRUE/FALSE defines
	- Use standard NS16550 registers/bit defines in UART init

Changes for V3:
	- Use I/O accessors for Tegra2 HW MMIO register access
	- Allow conditional compile of UARTA/UARTD code to save space
		
Changes for V4:
	- Use address of HW structs (&pmc, etc.) in readl/writel
	- Remove empty lines, fix mixed case hex #s & comments in header(s)
	- Move board/nvidia/common/board.c UART code & header to 
		arch/arm/cpu/armv7/tegra2/
	- Declare internal functions as static in UART code

 arch/arm/cpu/armv7/tegra2/Makefile           |   48 ++++++
 arch/arm/cpu/armv7/tegra2/board.c            |   91 +++++++++++
 arch/arm/cpu/armv7/tegra2/board.h            |   58 +++++++
 arch/arm/cpu/armv7/tegra2/config.mk          |   28 ++++
 arch/arm/cpu/armv7/tegra2/lowlevel_init.S    |   65 ++++++++
 arch/arm/cpu/armv7/tegra2/sys_info.c         |   35 ++++
 arch/arm/cpu/armv7/tegra2/timer.c            |  122 +++++++++++++++
 arch/arm/cpu/armv7/tegra2/uart.c             |  216 ++++++++++++++++++++++++++
 arch/arm/include/asm/arch-tegra2/clk_rst.h   |  154 ++++++++++++++++++
 arch/arm/include/asm/arch-tegra2/pinmux.h    |   51 ++++++
 arch/arm/include/asm/arch-tegra2/pmc.h       |  124 +++++++++++++++
 arch/arm/include/asm/arch-tegra2/sys_proto.h |   33 ++++
 arch/arm/include/asm/arch-tegra2/tegra2.h    |   49 ++++++
 arch/arm/include/asm/arch-tegra2/uart.h      |   44 ++++++
 board/nvidia/common/board.c                  |   57 +++++++
 15 files changed, 1175 insertions(+), 0 deletions(-)
 create mode 100644 arch/arm/cpu/armv7/tegra2/Makefile
 create mode 100644 arch/arm/cpu/armv7/tegra2/board.c
 create mode 100644 arch/arm/cpu/armv7/tegra2/board.h
 create mode 100644 arch/arm/cpu/armv7/tegra2/config.mk
 create mode 100644 arch/arm/cpu/armv7/tegra2/lowlevel_init.S
 create mode 100644 arch/arm/cpu/armv7/tegra2/sys_info.c
 create mode 100644 arch/arm/cpu/armv7/tegra2/timer.c
 create mode 100644 arch/arm/cpu/armv7/tegra2/uart.c
 create mode 100644 arch/arm/include/asm/arch-tegra2/clk_rst.h
 create mode 100644 arch/arm/include/asm/arch-tegra2/pinmux.h
 create mode 100644 arch/arm/include/asm/arch-tegra2/pmc.h
 create mode 100644 arch/arm/include/asm/arch-tegra2/sys_proto.h
 create mode 100644 arch/arm/include/asm/arch-tegra2/tegra2.h
 create mode 100644 arch/arm/include/asm/arch-tegra2/uart.h
 create mode 100644 board/nvidia/common/board.c
Minkyu Kang - Jan. 21, 2011, 8:16 a.m.
Dear Tom Warren,

On 21 January 2011 09:42, Tom Warren <twarren.nvidia@gmail.com> wrote:
> diff --git a/arch/arm/cpu/armv7/tegra2/uart.c b/arch/arm/cpu/armv7/tegra2/uart.c
> new file mode 100644
> index 0000000..5e60bd8
> --- /dev/null
> +++ b/arch/arm/cpu/armv7/tegra2/uart.c

How about move it to drivers/serial/ ?
And why don't you use serial multi interface?

Thanks
Minkyu Kang
Tom Warren - Jan. 21, 2011, 4:08 p.m.
Minkyu,

On Fri, Jan 21, 2011 at 1:16 AM, Minkyu Kang <promsoft@gmail.com> wrote:
> Dear Tom Warren,
>
> On 21 January 2011 09:42, Tom Warren <twarren.nvidia@gmail.com> wrote:
>> diff --git a/arch/arm/cpu/armv7/tegra2/uart.c b/arch/arm/cpu/armv7/tegra2/uart.c
>> new file mode 100644
>> index 0000000..5e60bd8
>> --- /dev/null
>> +++ b/arch/arm/cpu/armv7/tegra2/uart.c
>
> How about move it to drivers/serial/ ?
There's Tegra-specific code in there (clocks, PLLs and pinmuxes).

> And why don't you use serial multi interface?
CONFIG_SERIAL_MULTI is enabled in the config files.

>
> Thanks
> Minkyu Kang
Thank you,

Tom
> --
> from. prom.
> www.promsoft.net
>
seedshope - Jan. 21, 2011, 4:19 p.m.
On 01/22/2011 12:08 AM, Tom Warren wrote:
> Minkyu,
>
> On Fri, Jan 21, 2011 at 1:16 AM, Minkyu Kang<promsoft@gmail.com>  wrote:
>> Dear Tom Warren,
>>
>> On 21 January 2011 09:42, Tom Warren<twarren.nvidia@gmail.com>  wrote:
>>> diff --git a/arch/arm/cpu/armv7/tegra2/uart.c b/arch/arm/cpu/armv7/tegra2/uart.c
>>> new file mode 100644
>>> index 0000000..5e60bd8
>>> --- /dev/null
>>> +++ b/arch/arm/cpu/armv7/tegra2/uart.c
>> How about move it to drivers/serial/ ?
Approve, you can use name in the drivers/serial. such as:
serial_tegra2.c

Thanks
seedshope
> There's Tegra-specific code in there (clocks, PLLs and pinmuxes).
>
>> And why don't you use serial multi interface?
> CONFIG_SERIAL_MULTI is enabled in the config files.
>
>> Thanks
>> Minkyu Kang
> Thank you,
>
> Tom
>> --
>> from. prom.
>> www.promsoft.net
>>
> _______________________________________________
> U-Boot mailing list
> U-Boot@lists.denx.de
> http://lists.denx.de/mailman/listinfo/u-boot
seedshope - Jan. 21, 2011, 4:35 p.m.
On 01/21/2011 08:42 AM, Tom Warren wrote:
> +
> +enum {
> +	UART_A = 1,
> +	UART_B,
> +	UART_C,
> +	UART_D,
> +	UART_E
> +};
> +
> +#endif /* _BOARD_H_ */
>
>
> diff --git a/arch/arm/cpu/armv7/tegra2/uart.c b/arch/arm/cpu/armv7/tegra2/uart.c
> new file mode 100644
> index 0000000..5e60bd8
> --- /dev/null
> +++ b/arch/arm/cpu/armv7/tegra2/uart.c
> @@ -0,0 +1,216 @@
> +/*
> + *  (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 "board.h"
> +
> +/*
> + * Routine: uart_clock_init
> + * Description: init the PLL and clock for the UART in uart_num
> + */
> +static void uart_clock_init(int uart_num)
> +{
> +	clk_rst_ctlr *const clkrst = (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 based on uart_num */
> +#if CONFIG_TEGRA2_ENABLE_UARTA
> +	if (uart_num == UART_A) {
> +		/* 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 CONFIG_TEGRA2_ENABLE_UARTD
> +	if (uart_num == UART_D) {
> +		/* 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 UART based on uart_num
> + */
> +static void pin_mux_uart(int uart_num)
> +{
> +	pinmux_tri_ctlr *const pmt = (pinmux_tri_ctlr *)NV_PA_APB_MISC_BASE;
> +	u32 reg;
> +
> +#if CONFIG_TEGRA2_ENABLE_UARTA
> +	if (uart_num  == UART_A) {
Why  you need get the parameters uart_num, I think if you want to use 
CONFIG_TEGRA2_ENABLE_UARTA,
You  only defined CONFIG_TEGRA2_ENABLE_UARTA in 
include/configs/seaboard.h or include/configs/tegra2-common.h.

Here, The code formats may be as following:

#ifdef CONFIG_SERIAL1
......
#elif defined(CONFIG_SERIAL2)
......
#else
......
#endif

> +		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 CONFIG_TEGRA2_ENABLE_UARTD
> +	if (uart_num == UART_D) {
> +		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 */
> +}
> +
> +static void setup_uart(uart_ctlr *u)
> +{
> +	u32 reg;
> +
> +	/* Prepare the divisor value */
> +	reg = NVRM_PLLP_FIXED_FREQ_KHZ * 1000 / NV_DEFAULT_DEBUG_BAUD / 16;
> +
> +	/* Set up UART parameters */
> +	writel(UART_LCR_DLAB,&u->uart_lcr);
> +	writel(reg,&u->uart_thr_dlab_0);
> +	writel(0,&u->uart_ier_dlab_0);
> +	writel(0,&u->uart_lcr);			/* clear DLAB */
> +	writel((UART_FCR_TRIGGER_3 | UART_FCR_FIFO_EN | \
> +		UART_FCR_CLEAR_XMIT | UART_FCR_CLEAR_RCVR),&u->uart_iir_fcr);
> +	writel(0,&u->uart_ier_dlab_0);
> +	writel(UART_LCR_WLS_8,&u->uart_lcr);	/* 8N1 */
> +	writel(UART_MCR_RTS,&u->uart_mcr);
> +	writel(0,&u->uart_msr);
> +	writel(0,&u->uart_spr);
> +	writel(0,&u->uart_irda_csr);
> +	writel(0,&u->uart_asr);
> +	writel((UART_FCR_TRIGGER_3 | UART_FCR_FIFO_EN),&u->uart_iir_fcr);
> +
> +	/* Flush any old characters out of the RX FIFO */
> +	reg = readl(&u->uart_lsr);
> +
> +	while (reg&  UART_LSR_DR) {
> +		reg = readl(&u->uart_thr_dlab_0);
> +		reg = readl(&u->uart_lsr);
> +	}
> +}
> +
> +/*
> + * Routine: init_uart
> + * Description: init the UART clocks, muxes, and baudrate/parity/etc.
> + */
> +static void init_uart(int uart_num)
> +{
> +#if CONFIG_TEGRA2_ENABLE_UARTA
> +	if (uart_num == UART_A) {
above.

Thanks
seedshope
> +		uart_ctlr *const uart = (uart_ctlr *)NV_PA_APB_UARTA_BASE;
> +
> +		uart_clock_init(UART_A);
> +
> +		/* Enable UARTA - uses config 0 */
> +		pin_mux_uart(UART_A);
> +
> +		setup_uart(uart);
> +	}
> +#endif	/* CONFIG_TEGRA2_ENABLE_UARTD */
> +#if CONFIG_TEGRA2_ENABLE_UARTD
> +	if (uart_num == UART_D) {
> +		uart_ctlr *const uart = (uart_ctlr *)NV_PA_APB_UARTD_BASE;
> +
> +		uart_clock_init(UART_D);
> +
> +		/* Enable UARTD - uses config 0 */
> +		pin_mux_uart(UART_D);
> +
> +		setup_uart(uart);
> +	}
> +#endif	/* CONFIG_TEGRA2_ENABLE_UARTD */
> +}
> +
> +void uart_init(void)
> +{
> +#if (CONFIG_TEGRA2_ENABLE_UARTA)
> +	init_uart(UART_A);
> +#endif
> +#if (CONFIG_TEGRA2_ENABLE_UARTD)
> +	init_uart(UART_D);
> +#endif
> +}
>
seedshope - Jan. 21, 2011, 4:49 p.m.
On 01/22/2011 12:35 AM, seedshope wrote:
> On 01/21/2011 08:42 AM, Tom Warren wrote:
>> +
>> +enum {
>> +    UART_A = 1,
>> +    UART_B,
>> +    UART_C,
>> +    UART_D,
>> +    UART_E
>> +};
>> +
>> +#endif /* _BOARD_H_ */
>>
>>
>> diff --git a/arch/arm/cpu/armv7/tegra2/uart.c 
>> b/arch/arm/cpu/armv7/tegra2/uart.c
>> new file mode 100644
>> index 0000000..5e60bd8
>> --- /dev/null
>> +++ b/arch/arm/cpu/armv7/tegra2/uart.c
>> @@ -0,0 +1,216 @@
>> +/*
>> + *  (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 "board.h"
>> +
>> +/*
>> + * Routine: uart_clock_init
>> + * Description: init the PLL and clock for the UART in uart_num
>> + */
>> +static void uart_clock_init(int uart_num)
>> +{
>> +    clk_rst_ctlr *const clkrst = (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 based on uart_num */
>> +#if CONFIG_TEGRA2_ENABLE_UARTA
>> +    if (uart_num == UART_A) {
>> +        /* 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 CONFIG_TEGRA2_ENABLE_UARTD
>> +    if (uart_num == UART_D) {
>> +        /* 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 UART based 
>> on uart_num
>> + */
>> +static void pin_mux_uart(int uart_num)
>> +{
>> +    pinmux_tri_ctlr *const pmt = (pinmux_tri_ctlr 
>> *)NV_PA_APB_MISC_BASE;
>> +    u32 reg;
>> +
>> +#if CONFIG_TEGRA2_ENABLE_UARTA
>> +    if (uart_num  == UART_A) {
> Why  you need get the parameters uart_num, I think if you want to use 
> CONFIG_TEGRA2_ENABLE_UARTA,
> You  only defined CONFIG_TEGRA2_ENABLE_UARTA in 
> include/configs/seaboard.h or include/configs/tegra2-common.h.
>
> Here, The code formats may be as following:
>
> #ifdef CONFIG_SERIAL1
> ......
> #elif defined(CONFIG_SERIAL2)
> ......
> #else
> ......
> #endif
I am sorry, just see the tegra2-common.h file, UARTA is for keypad, 
UARTB for debug.
But I feel the line of "if (uart_num  == UART_A) " is not necessary. 
Because CONFIG_TEGRA2_ENABLE_UARTA
have already represent UART_A.

You only use as following:

#ifdef CONFIG_TEGRA2_ENABLE_UARTA

#endif

Thanks,
seedshope
>
>> +        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 CONFIG_TEGRA2_ENABLE_UARTD
>> +    if (uart_num == UART_D) {
>> +        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 */
>> +}
>> +
>> +static void setup_uart(uart_ctlr *u)
>> +{
>> +    u32 reg;
>> +
>> +    /* Prepare the divisor value */
>> +    reg = NVRM_PLLP_FIXED_FREQ_KHZ * 1000 / NV_DEFAULT_DEBUG_BAUD / 16;
>> +
>> +    /* Set up UART parameters */
>> +    writel(UART_LCR_DLAB,&u->uart_lcr);
>> +    writel(reg,&u->uart_thr_dlab_0);
>> +    writel(0,&u->uart_ier_dlab_0);
>> +    writel(0,&u->uart_lcr);            /* clear DLAB */
>> +    writel((UART_FCR_TRIGGER_3 | UART_FCR_FIFO_EN | \
>> +        UART_FCR_CLEAR_XMIT | UART_FCR_CLEAR_RCVR),&u->uart_iir_fcr);
>> +    writel(0,&u->uart_ier_dlab_0);
>> +    writel(UART_LCR_WLS_8,&u->uart_lcr);    /* 8N1 */
>> +    writel(UART_MCR_RTS,&u->uart_mcr);
>> +    writel(0,&u->uart_msr);
>> +    writel(0,&u->uart_spr);
>> +    writel(0,&u->uart_irda_csr);
>> +    writel(0,&u->uart_asr);
>> +    writel((UART_FCR_TRIGGER_3 | UART_FCR_FIFO_EN),&u->uart_iir_fcr);
>> +
>> +    /* Flush any old characters out of the RX FIFO */
>> +    reg = readl(&u->uart_lsr);
>> +
>> +    while (reg&  UART_LSR_DR) {
>> +        reg = readl(&u->uart_thr_dlab_0);
>> +        reg = readl(&u->uart_lsr);
>> +    }
>> +}
>> +
>> +/*
>> + * Routine: init_uart
>> + * Description: init the UART clocks, muxes, and baudrate/parity/etc.
>> + */
>> +static void init_uart(int uart_num)
>> +{
>> +#if CONFIG_TEGRA2_ENABLE_UARTA
>> +    if (uart_num == UART_A) {
> above.
>
> Thanks
> seedshope
>> +        uart_ctlr *const uart = (uart_ctlr *)NV_PA_APB_UARTA_BASE;
>> +
>> +        uart_clock_init(UART_A);
>> +
>> +        /* Enable UARTA - uses config 0 */
>> +        pin_mux_uart(UART_A);
>> +
>> +        setup_uart(uart);
>> +    }
>> +#endif    /* CONFIG_TEGRA2_ENABLE_UARTD */
>> +#if CONFIG_TEGRA2_ENABLE_UARTD
>> +    if (uart_num == UART_D) {
>> +        uart_ctlr *const uart = (uart_ctlr *)NV_PA_APB_UARTD_BASE;
>> +
>> +        uart_clock_init(UART_D);
>> +
>> +        /* Enable UARTD - uses config 0 */
>> +        pin_mux_uart(UART_D);
>> +
>> +        setup_uart(uart);
>> +    }
>> +#endif    /* CONFIG_TEGRA2_ENABLE_UARTD */
>> +}
>> +
>> +void uart_init(void)
>> +{
>> +#if (CONFIG_TEGRA2_ENABLE_UARTA)
>> +    init_uart(UART_A);
>> +#endif
>> +#if (CONFIG_TEGRA2_ENABLE_UARTD)
>> +    init_uart(UART_D);
>> +#endif
>> +}
>>
>
Tom Warren - Jan. 21, 2011, 6:42 p.m.
seedshope, (?)

On Fri, Jan 21, 2011 at 9:35 AM, seedshope <bocui107@gmail.com> wrote:
> On 01/21/2011 08:42 AM, Tom Warren wrote:
>>
>> +
>> +enum {
>> +       UART_A = 1,
>> +       UART_B,
>> +       UART_C,
>> +       UART_D,
>> +       UART_E
>> +};
>> +
>> +#endif /* _BOARD_H_ */
>>
<snip>

>> +
>> +#if CONFIG_TEGRA2_ENABLE_UARTA
>> +       if (uart_num  == UART_A) {
>
> Why  you need get the parameters uart_num, I think if you want to use
> CONFIG_TEGRA2_ENABLE_UARTA,
> You  only defined CONFIG_TEGRA2_ENABLE_UARTA in include/configs/seaboard.h
> or include/configs/tegra2-common.h.
>
OK, makes sense. I'll move uart.c/board.h to drivers/serial as
serial_tegra2.[ch] and remove
all mention of UART_[A-E] and uart_num. Thanks.

> Here, The code formats may be as following:
>
> #ifdef CONFIG_SERIAL1
> ......
> #elif defined(CONFIG_SERIAL2)
> ......
> #else
> ......
> #endif
>
Some configs / builds can have both UARTs active, so each
#ifdef/#endif pair is needed.

> Thanks
> seedshope
Thanks for the feedback

Tom

Patch

diff --git a/arch/arm/cpu/armv7/tegra2/Makefile b/arch/arm/cpu/armv7/tegra2/Makefile
new file mode 100644
index 0000000..f5b657b
--- /dev/null
+++ 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 uart.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/tegra2/board.c b/arch/arm/cpu/armv7/tegra2/board.c
new file mode 100644
index 0000000..816a8cd
--- /dev/null
+++ b/arch/arm/cpu/armv7/tegra2/board.c
@@ -0,0 +1,91 @@ 
+/*
+ *  (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 "board.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)
+{
+	pmc_ctlr *const pmc = (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
+
+extern tegra2_sysinfo sysinfo;
+
+int checkboard(void)
+{
+	printf("Board: %s\n", sysinfo.board_string);
+	return 0;
+}
+#endif	/* CONFIG_DISPLAY_BOARDINFO */
diff --git a/arch/arm/cpu/armv7/tegra2/board.h b/arch/arm/cpu/armv7/tegra2/board.h
new file mode 100644
index 0000000..f8f09c0
--- /dev/null
+++ b/arch/arm/cpu/armv7/tegra2/board.h
@@ -0,0 +1,58 @@ 
+/*
+ *  (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 _BOARD_H_
+#define _BOARD_H_
+
+#include <asm/arch/clk_rst.h>
+#include <asm/arch/pinmux.h>
+#include <asm/arch/pmc.h>
+#include <asm/arch/uart.h>
+
+#define NVRM_PLLP_FIXED_FREQ_KHZ	216000
+#define NV_DEFAULT_DEBUG_BAUD		115200
+
+#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)
+
+#define Z_GMC			(1 << 29)
+#define Z_IRRX			(1 << 20)
+#define Z_IRTX			(1 << 19)
+
+enum {
+	UART_A = 1,
+	UART_B,
+	UART_C,
+	UART_D,
+	UART_E
+};
+
+#endif /* _BOARD_H_ */
diff --git a/arch/arm/cpu/armv7/tegra2/config.mk b/arch/arm/cpu/armv7/tegra2/config.mk
new file mode 100644
index 0000000..96c0795
--- /dev/null
+++ 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
diff --git a/arch/arm/cpu/armv7/tegra2/lowlevel_init.S b/arch/arm/cpu/armv7/tegra2/lowlevel_init.S
new file mode 100644
index 0000000..7f15746
--- /dev/null
+++ 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
diff --git a/arch/arm/cpu/armv7/tegra2/sys_info.c b/arch/arm/cpu/armv7/tegra2/sys_info.c
new file mode 100644
index 0000000..6d11dc1
--- /dev/null
+++ 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 */
diff --git a/arch/arm/cpu/armv7/tegra2/timer.c b/arch/arm/cpu/armv7/tegra2/timer.c
new file mode 100644
index 0000000..858af0f
--- /dev/null
+++ 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;
+
+static timerus_t *timer_base = (timerus_t *)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;
+}
diff --git a/arch/arm/cpu/armv7/tegra2/uart.c b/arch/arm/cpu/armv7/tegra2/uart.c
new file mode 100644
index 0000000..5e60bd8
--- /dev/null
+++ b/arch/arm/cpu/armv7/tegra2/uart.c
@@ -0,0 +1,216 @@ 
+/*
+ *  (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 "board.h"
+
+/*
+ * Routine: uart_clock_init
+ * Description: init the PLL and clock for the UART in uart_num
+ */
+static void uart_clock_init(int uart_num)
+{
+	clk_rst_ctlr *const clkrst = (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 based on uart_num */
+#if CONFIG_TEGRA2_ENABLE_UARTA
+	if (uart_num == UART_A) {
+		/* 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 CONFIG_TEGRA2_ENABLE_UARTD
+	if (uart_num == UART_D) {
+		/* 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 UART based on uart_num
+ */
+static void pin_mux_uart(int uart_num)
+{
+	pinmux_tri_ctlr *const pmt = (pinmux_tri_ctlr *)NV_PA_APB_MISC_BASE;
+	u32 reg;
+
+#if CONFIG_TEGRA2_ENABLE_UARTA
+	if (uart_num  == UART_A) {
+		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 CONFIG_TEGRA2_ENABLE_UARTD
+	if (uart_num == UART_D) {
+		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 */
+}
+
+static void setup_uart(uart_ctlr *u)
+{
+	u32 reg;
+
+	/* Prepare the divisor value */
+	reg = NVRM_PLLP_FIXED_FREQ_KHZ * 1000 / NV_DEFAULT_DEBUG_BAUD / 16;
+
+	/* Set up UART parameters */
+	writel(UART_LCR_DLAB, &u->uart_lcr);
+	writel(reg, &u->uart_thr_dlab_0);
+	writel(0, &u->uart_ier_dlab_0);
+	writel(0, &u->uart_lcr);			/* clear DLAB */
+	writel((UART_FCR_TRIGGER_3 | UART_FCR_FIFO_EN | \
+		UART_FCR_CLEAR_XMIT | UART_FCR_CLEAR_RCVR), &u->uart_iir_fcr);
+	writel(0, &u->uart_ier_dlab_0);
+	writel(UART_LCR_WLS_8, &u->uart_lcr);	/* 8N1 */
+	writel(UART_MCR_RTS, &u->uart_mcr);
+	writel(0, &u->uart_msr);
+	writel(0, &u->uart_spr);
+	writel(0, &u->uart_irda_csr);
+	writel(0, &u->uart_asr);
+	writel((UART_FCR_TRIGGER_3 | UART_FCR_FIFO_EN), &u->uart_iir_fcr);
+
+	/* Flush any old characters out of the RX FIFO */
+	reg = readl(&u->uart_lsr);
+
+	while (reg & UART_LSR_DR) {
+		reg = readl(&u->uart_thr_dlab_0);
+		reg = readl(&u->uart_lsr);
+	}
+}
+
+/*
+ * Routine: init_uart
+ * Description: init the UART clocks, muxes, and baudrate/parity/etc.
+ */
+static void init_uart(int uart_num)
+{
+#if CONFIG_TEGRA2_ENABLE_UARTA
+	if (uart_num == UART_A) {
+		uart_ctlr *const uart = (uart_ctlr *)NV_PA_APB_UARTA_BASE;
+
+		uart_clock_init(UART_A);
+
+		/* Enable UARTA - uses config 0 */
+		pin_mux_uart(UART_A);
+
+		setup_uart(uart);
+	}
+#endif	/* CONFIG_TEGRA2_ENABLE_UARTD */
+#if CONFIG_TEGRA2_ENABLE_UARTD
+	if (uart_num == UART_D) {
+		uart_ctlr *const uart = (uart_ctlr *)NV_PA_APB_UARTD_BASE;
+
+		uart_clock_init(UART_D);
+
+		/* Enable UARTD - uses config 0 */
+		pin_mux_uart(UART_D);
+
+		setup_uart(uart);
+	}
+#endif	/* CONFIG_TEGRA2_ENABLE_UARTD */
+}
+
+void uart_init(void)
+{
+#if (CONFIG_TEGRA2_ENABLE_UARTA)
+	init_uart(UART_A);
+#endif
+#if (CONFIG_TEGRA2_ENABLE_UARTD)
+	init_uart(UART_D);
+#endif
+}
diff --git a/arch/arm/include/asm/arch-tegra2/clk_rst.h b/arch/arm/include/asm/arch-tegra2/clk_rst.h
new file mode 100644
index 0000000..c5eb5b8
--- /dev/null
+++ b/arch/arm/include/asm/arch-tegra2/clk_rst.h
@@ -0,0 +1,154 @@ 
+/*
+ *  (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 */
+typedef volatile 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 */
+} clk_rst_ctlr;
+
+#endif	/* CLK_RST_H */
diff --git a/arch/arm/include/asm/arch-tegra2/pinmux.h b/arch/arm/include/asm/arch-tegra2/pinmux.h
new file mode 100644
index 0000000..2730be3
--- /dev/null
+++ b/arch/arm/include/asm/arch-tegra2/pinmux.h
@@ -0,0 +1,51 @@ 
+/*
+ *  (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 */
+typedef volatile struct pinmux_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 */
+} pinmux_tri_ctlr;
+
+#endif	/* PINMUX_H */
diff --git a/arch/arm/include/asm/arch-tegra2/pmc.h b/arch/arm/include/asm/arch-tegra2/pmc.h
new file mode 100644
index 0000000..4fbdb3d
--- /dev/null
+++ 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 */
+typedef volatile 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 */
+} pmc_ctlr;
+
+#endif	/* PMC_H */
diff --git a/arch/arm/include/asm/arch-tegra2/sys_proto.h b/arch/arm/include/asm/arch-tegra2/sys_proto.h
new file mode 100644
index 0000000..70e63a8
--- /dev/null
+++ b/arch/arm/include/asm/arch-tegra2/sys_proto.h
@@ -0,0 +1,33 @@ 
+/*
+ * (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_
+
+typedef struct {
+	char *board_string;
+} tegra2_sysinfo;
+
+void invalidate_dcache(void);
+
+#endif
diff --git a/arch/arm/include/asm/arch-tegra2/tegra2.h b/arch/arm/include/asm/arch-tegra2/tegra2.h
new file mode 100644
index 0000000..3bd0212
--- /dev/null
+++ 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__
+typedef volatile struct timerus {
+	unsigned int cntr_1us;
+} timerus_t;
+#else  /* __ASSEMBLY__ */
+#define PRM_RSTCTRL		NV_PA_PMC_BASE
+#endif
+
+#endif	/* TEGRA2_H */
diff --git a/arch/arm/include/asm/arch-tegra2/uart.h b/arch/arm/include/asm/arch-tegra2/uart.h
new file mode 100644
index 0000000..702f9b4
--- /dev/null
+++ b/arch/arm/include/asm/arch-tegra2/uart.h
@@ -0,0 +1,44 @@ 
+/*
+ *  (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 */
+typedef volatile 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 */
+} uart_ctlr;
+
+#define UART_FCR_TRIGGER_3	0x30	/* Mask for trigger set at 3 */
+
+#endif	/* UART_H */
diff --git a/board/nvidia/common/board.c b/board/nvidia/common/board.c
new file mode 100644
index 0000000..defc359
--- /dev/null
+++ b/board/nvidia/common/board.c
@@ -0,0 +1,57 @@ 
+/*
+ *  (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/arch/tegra2.h>
+#include <asm/arch/sys_proto.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+const tegra2_sysinfo sysinfo = {
+	CONFIG_TEGRA2_BOARD_STRING
+};
+
+/*
+ * 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;
+
+	return 0;
+}
+
+/*
+ * Routine: timer_init
+ * Description: init the timestamp and lastinc value
+ */
+int timer_init(void)
+{
+	reset_timer();
+	return 0;
+}