[U-Boot] [RFC PATCH 1/1] Add support for pengwyn board

[micro1183 <micro1183@gmail.com>]

This patch adds support for the silica pengwyn board with AM335x SoC

Signed-off-by: Lothar Felten <lothar.felten@gmail.com>
---
 arch/arm/include/asm/arch-am33xx/ddr_defs.h |   16 ++
 board/silica/pengwyn/Makefile               |   13 +
 board/silica/pengwyn/board.c                |  245 +++++++++++++++++++
 board/silica/pengwyn/board.h                |   22 ++
 board/silica/pengwyn/mux.c                  |  109 +++++++++
 boards.cfg                                  |    1 +
 include/configs/pengwyn.h                   |  340
+++++++++++++++++++++++++++
 7 files changed, 746 insertions(+)

diff --git a/arch/arm/include/asm/arch-am33xx/ddr_defs.h
b/arch/arm/include/asm/arch-am33xx/ddr_defs.h
index c1777df..60cb098 100644
--- a/arch/arm/include/asm/arch-am33xx/ddr_defs.h
+++ b/arch/arm/include/asm/arch-am33xx/ddr_defs.h
@@ -58,6 +58,22 @@
 #define MT41J128MJT125_PHY_FIFO_WE		0x100
 #define MT41J128MJT125_IOCTRL_VALUE		0x18B

+/* Micron MT41K128M16JT-187E */
+#define MT41K128MJT187E_EMIF_READ_LATENCY	0x06
+#define MT41K128MJT187E_EMIF_TIM1		0x0888B3DB
+#define MT41K128MJT187E_EMIF_TIM2		0x36337FDA
+#define MT41K128MJT187E_EMIF_TIM3		0x501F830F
+#define MT41K128MJT187E_EMIF_SDCFG		0x61C04AB2
+#define MT41K128MJT187E_EMIF_SDREF		0x0000093B
+#define MT41K128MJT187E_ZQ_CFG			0x50074BE4
+#define MT41K128MJT187E_RATIO			0x40
+#define MT41K128MJT187E_INVERT_CLKOUT		0x1
+#define MT41K128MJT187E_RD_DQS			0x3B
+#define MT41K128MJT187E_WR_DQS			0x85
+#define MT41K128MJT187E_PHY_WR_DATA		0xC1
+#define MT41K128MJT187E_PHY_FIFO_WE		0x100
+#define MT41K128MJT187E_IOCTRL_VALUE		0x18B
+
 /* Micron MT41J64M16JT-125 */
 #define MT41J64MJT125_EMIF_SDCFG		0x61C04A32

diff --git a/board/silica/pengwyn/Makefile b/board/silica/pengwyn/Makefile
new file mode 100644
index 0000000..c8b4f9a
--- /dev/null
+++ b/board/silica/pengwyn/Makefile
@@ -0,0 +1,13 @@
+#
+# Makefile
+#
+# Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+ifeq ($(CONFIG_SPL_BUILD)$(CONFIG_NOR_BOOT),y)
+obj-y	:= mux.o
+endif
+
+obj-y	+= board.o
diff --git a/board/silica/pengwyn/board.c b/board/silica/pengwyn/board.c
new file mode 100644
index 0000000..e6f59d4
--- /dev/null
+++ b/board/silica/pengwyn/board.c
@@ -0,0 +1,245 @@
+/*
+ * board.c
+ *
+ * Copyright (C) 2013 Lothar Felten <lothar.felten@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <common.h>
+#include <errno.h>
+#include <spl.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/omap.h>
+#include <asm/arch/ddr_defs.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/mmc_host_def.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/io.h>
+#include <asm/emif.h>
+#include <asm/gpio.h>
+#include <i2c.h>
+#include <miiphy.h>
+#include <cpsw.h>
+#include <power/tps65217.h>
+#include "board.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
+
+/* MII mode defines */
+#define RMII_RGMII2_MODE_ENABLE 0x49
+
+#if defined(CONFIG_SPL_BUILD) || defined(CONFIG_NOR_BOOT)
+
+/* DDR3 RAM timings */
+static const struct ddr_data ddr3_data = {
+	.datardsratio0 = MT41K128MJT187E_RD_DQS,
+	.datawdsratio0 = MT41K128MJT187E_WR_DQS,
+	.datafwsratio0 = MT41K128MJT187E_PHY_FIFO_WE,
+	.datawrsratio0 = MT41K128MJT187E_PHY_WR_DATA,
+};
+
+static const struct cmd_control ddr3_cmd_ctrl_data = {
+	.cmd0csratio = MT41K128MJT187E_RATIO,
+	.cmd0iclkout = MT41K128MJT187E_INVERT_CLKOUT,
+	.cmd1csratio = MT41K128MJT187E_RATIO,
+	.cmd1iclkout = MT41K128MJT187E_INVERT_CLKOUT,
+	.cmd2csratio = MT41K128MJT187E_RATIO,
+	.cmd2iclkout = MT41K128MJT187E_INVERT_CLKOUT,
+};
+
+static struct emif_regs ddr3_emif_reg_data = {
+	.sdram_config = MT41K128MJT187E_EMIF_SDCFG,
+	.ref_ctrl = MT41K128MJT187E_EMIF_SDREF,
+	.sdram_tim1 = MT41K128MJT187E_EMIF_TIM1,
+	.sdram_tim2 = MT41K128MJT187E_EMIF_TIM2,
+	.sdram_tim3 = MT41K128MJT187E_EMIF_TIM3,
+	.zq_config = MT41K128MJT187E_ZQ_CFG,
+	.emif_ddr_phy_ctlr_1 = MT41K128MJT187E_EMIF_READ_LATENCY |
+				PHY_EN_DYN_PWRDN,
+};
+
+const struct ctrl_ioregs ddr3_ioregs = {
+	.cm0ioctl		= MT41K128MJT187E_IOCTRL_VALUE,
+	.cm1ioctl		= MT41K128MJT187E_IOCTRL_VALUE,
+	.cm2ioctl		= MT41K128MJT187E_IOCTRL_VALUE,
+	.dt0ioctl		= MT41K128MJT187E_IOCTRL_VALUE,
+	.dt1ioctl		= MT41K128MJT187E_IOCTRL_VALUE,
+};
+
+#ifdef CONFIG_SPL_OS_BOOT
+int spl_start_uboot(void)
+{
+	/* break into full u-boot on 'c' */
+	return serial_tstc() && serial_getc() == 'c';
+}
+#endif
+
+#define OSC	(V_OSCK/1000000)
+const struct dpll_params dpll_ddr_266 = {
+		266, OSC-1, 1, -1, -1, -1, -1};
+const struct dpll_params dpll_ddr_303 = {
+		303, OSC-1, 1, -1, -1, -1, -1};
+const struct dpll_params dpll_ddr_400 = {
+		400, OSC-1, 1, -1, -1, -1, -1};
+
+void am33xx_spl_board_init(void)
+{
+	/* the pengwyn board uses the TPS650250 PMIC  without I2C */
+	/* interface and will output the following fixed voltages: */
+	/* DCDC1=3V3 (IO) DCDC2=1V5 (DDR) DCDC3=1V26 (Vmpu) */
+	/* VLDO1=1V8 (IO) VLDO2=1V8(IO) */
+	/* Vcore=1V1 is fixed, generated by TPS62231 */
+
+	/* Get the frequency */
+	dpll_mpu_opp100.m = am335x_get_efuse_mpu_max_freq(cdev);
+
+	/* Set CORE Frequencies to OPP100 */
+	do_setup_dpll(&dpll_core_regs, &dpll_core_opp100);
+
+	/* 720MHz cpu, this might change on newer board revisions */
+	dpll_mpu_opp100.m = MPUPLL_M_720;
+	do_setup_dpll(&dpll_mpu_regs, &dpll_mpu_opp100);
+}
+
+const struct dpll_params *get_dpll_ddr_params(void)
+{
+	/* future configs can return other clock settings */
+	return &dpll_ddr_303;
+}
+
+void set_uart_mux_conf(void)
+{
+	enable_uart0_pin_mux();
+}
+
+void set_mux_conf_regs(void)
+{
+	enable_board_pin_mux();
+}
+
+void sdram_init(void)
+{
+	config_ddr(303, &ddr3_ioregs, &ddr3_data,
+		   &ddr3_cmd_ctrl_data, &ddr3_emif_reg_data, 0);
+}
+#endif /* if CONFIG_SPL_BUILD */
+
+/*
+ * Basic board specific setup.  Pinmux has been handled already.
+ */
+int board_init(void)
+{
+	i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
+	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
+	gpmc_init();
+	return 0;
+}
+
+#ifdef CONFIG_DRIVER_TI_CPSW
+static void cpsw_control(int enabled)
+{
+	/* VTP can be added here */
+	return;
+}
+
+static struct cpsw_slave_data cpsw_slaves[] = {
+	{
+		.slave_reg_ofs	= 0x208,
+		.sliver_reg_ofs	= 0xd80,
+		.phy_id		= 0,
+		.phy_if		= PHY_INTERFACE_MODE_RMII,
+	},
+	{
+		.slave_reg_ofs	= 0x308,
+		.sliver_reg_ofs	= 0xdc0,
+		.phy_id		= 1,
+		.phy_if		= PHY_INTERFACE_MODE_RMII,
+	},
+};
+
+static struct cpsw_platform_data cpsw_data = {
+	.mdio_base		= CPSW_MDIO_BASE,
+	.cpsw_base		= CPSW_BASE,
+	.mdio_div		= 0xff,
+	.channels		= 8,
+	.cpdma_reg_ofs		= 0x800,
+	.slaves			= 1,
+	.slave_data		= cpsw_slaves,
+	.ale_reg_ofs		= 0xd00,
+	.ale_entries		= 1024,
+	.host_port_reg_ofs	= 0x108,
+	.hw_stats_reg_ofs	= 0x900,
+	.bd_ram_ofs		= 0x2000,
+	.mac_control		= (1 << 5),
+	.control		= cpsw_control,
+	.host_port_num		= 0,
+	.version		= CPSW_CTRL_VERSION_2,
+};
+#endif
+
+#if defined(CONFIG_DRIVER_TI_CPSW) || \
+	(defined(CONFIG_USB_ETHER) && defined(CONFIG_MUSB_GADGET))
+int board_eth_init(bd_t *bis)
+{
+	int rv, n = 0;
+#ifdef CONFIG_DRIVER_TI_CPSW
+	uint8_t mac_addr[6];
+	uint32_t mac_hi, mac_lo;
+
+	if (!eth_getenv_enetaddr("ethaddr", mac_addr)) {
+		printf("<ethaddr> not set. Reading from E-fuse\n");
+		/* try reading mac address from efuse */
+		mac_lo = readl(&cdev->macid0l);
+		mac_hi = readl(&cdev->macid0h);
+		mac_addr[0] = mac_hi & 0xFF;
+		mac_addr[1] = (mac_hi & 0xFF00) >> 8;
+		mac_addr[2] = (mac_hi & 0xFF0000) >> 16;
+		mac_addr[3] = (mac_hi & 0xFF000000) >> 24;
+		mac_addr[4] = mac_lo & 0xFF;
+		mac_addr[5] = (mac_lo & 0xFF00) >> 8;
+
+		if (is_valid_ether_addr(mac_addr))
+			eth_setenv_enetaddr("ethaddr", mac_addr);
+		else
+			goto try_usbether;
+	}
+
+	writel(RMII_RGMII2_MODE_ENABLE, &cdev->miisel);
+
+	rv = cpsw_register(&cpsw_data);
+	if (rv < 0)
+		printf("Error %d registering CPSW switch\n", rv);
+	else
+		n += rv;
+try_usbether:
+#endif
+
+#if defined(CONFIG_USB_ETHER) && !defined(CONFIG_SPL_BUILD)
+	rv = usb_eth_initialize(bis);
+	if (rv < 0)
+		printf("Error %d registering USB_ETHER\n", rv);
+	else
+		n += rv;
+#endif
+	return n;
+}
+#endif
+
+#ifdef CONFIG_BOARD_LATE_INIT
+int board_late_init(void)
+{
+	return 0;
+}
+#endif
diff --git a/board/silica/pengwyn/board.h b/board/silica/pengwyn/board.h
new file mode 100644
index 0000000..0a44218
--- /dev/null
+++ b/board/silica/pengwyn/board.h
@@ -0,0 +1,22 @@
+/*
+ * board.h
+ *
+ * Copyright (C) 2013 Lothar Felten <lothar.felten@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _BOARD_H_
+#define _BOARD_H_
+
+void enable_uart0_pin_mux(void);
+void enable_board_pin_mux(void);
+
+#endif
diff --git a/board/silica/pengwyn/mux.c b/board/silica/pengwyn/mux.c
new file mode 100644
index 0000000..8b88795
--- /dev/null
+++ b/board/silica/pengwyn/mux.c
@@ -0,0 +1,109 @@
+/*
+ * mux.c
+ *
+ * Copyright (C) 2013 Lothar Felten <lothar.felten@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <common.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/mux.h>
+#include <asm/io.h>
+#include "board.h"
+
+/* UART0 pins E15(rx),E16(tx) [E17(rts),E18(cts)] */
+static struct module_pin_mux uart0_pin_mux[] = {
+	{OFFSET(uart0_rxd), (MODE(0) | PULLUP_EN | RXACTIVE)},	/* UART0_RXD */
+	{OFFSET(uart0_txd), (MODE(0) | PULLUDEN)},		/* UART0_TXD */
+	{-1},
+};
+
+/* unused: UART1 pins D15(tx),D16(rx),D17(cts),D18(rts) */
+
+/* I2C pins C16(scl)/C17(sda) */
+static struct module_pin_mux i2c0_pin_mux[] = {
+	{OFFSET(i2c0_sda), (MODE(0) | RXACTIVE |
+					PULLUDEN | SLEWCTRL)}, /* I2C0_DATA */
+	{OFFSET(i2c0_scl), (MODE(0) | RXACTIVE |
+					PULLUDEN | SLEWCTRL)}, /* I2C0_SCLK */
+	{-1},
+};
+
+/* MMC0 pins */
+static struct module_pin_mux mmc0_pin_mux[] = {
+	{OFFSET(mmc0_dat3), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT3 */
+	{OFFSET(mmc0_dat2), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT2 */
+	{OFFSET(mmc0_dat1), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT1 */
+	{OFFSET(mmc0_dat0), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT0 */
+	{OFFSET(mmc0_clk), (MODE(0) | RXACTIVE | PULLUP_EN)},  /* MMC0_CLK */
+	{OFFSET(mmc0_cmd), (MODE(0) | RXACTIVE | PULLUP_EN)},  /* MMC0_CMD */
+	{OFFSET(spi0_cs1), (MODE(5) | RXACTIVE | PULLUP_EN)},  /* MMC0_CD */
+	{-1},
+};
+
+/* SPI0 pins A17(sclk),B17(d0),B16(d1),A16(cs0) [C15(cs1)] */
+static struct module_pin_mux spi0_pin_mux[] = {
+	{OFFSET(spi0_sclk), (MODE(0) | RXACTIVE | PULLUDEN)},	/* SPI0_SCLK */
+	{OFFSET(spi0_d0), (MODE(0) | RXACTIVE |
+			PULLUDEN | PULLUP_EN)},			/* SPI0_D0 */
+	{OFFSET(spi0_d1), (MODE(0) | RXACTIVE | PULLUDEN)},	/* SPI0_D1 */
+	{OFFSET(spi0_cs0), (MODE(0) | RXACTIVE |
+			PULLUDEN | PULLUP_EN)},			/* SPI0_CS0 */
+	{-1},
+};
+
+static struct module_pin_mux rmii1_pin_mux[] = {
+	{OFFSET(mii1_crs), MODE(1) | RXACTIVE},     /* RMII1_CRS */
+	{OFFSET(mii1_rxerr), MODE(1) | RXACTIVE},   /* RMII1_RXERR */
+	{OFFSET(mii1_txen), MODE(1)},               /* RMII1_TXEN */
+	{OFFSET(mii1_txd1), MODE(1)},               /* RMII1_TXD1 */
+	{OFFSET(mii1_txd0), MODE(1)},               /* RMII1_TXD0 */
+	{OFFSET(mii1_rxd1), MODE(1) | RXACTIVE},    /* RMII1_RXD1 */
+	{OFFSET(mii1_rxd0), MODE(1) | RXACTIVE},    /* RMII1_RXD0 */
+	{OFFSET(mdio_data), MODE(0) | RXACTIVE | PULLUP_EN}, /* MDIO_DATA */
+	{OFFSET(mdio_clk), MODE(0) | PULLUP_EN},    /* MDIO_CLK */
+	{OFFSET(rmii1_refclk), MODE(0) | RXACTIVE}, /* RMII1_REFCLK */
+	{-1},
+};
+
+static struct module_pin_mux nand_pin_mux[] = {
+	{OFFSET(gpmc_ad0), (MODE(0) | PULLUP_EN | RXACTIVE)},	/* NAND AD0 */
+	{OFFSET(gpmc_ad1), (MODE(0) | PULLUP_EN | RXACTIVE)},	/* NAND AD1 */
+	{OFFSET(gpmc_ad2), (MODE(0) | PULLUP_EN | RXACTIVE)},	/* NAND AD2 */
+	{OFFSET(gpmc_ad3), (MODE(0) | PULLUP_EN | RXACTIVE)},	/* NAND AD3 */
+	{OFFSET(gpmc_ad4), (MODE(0) | PULLUP_EN | RXACTIVE)},	/* NAND AD4 */
+	{OFFSET(gpmc_ad5), (MODE(0) | PULLUP_EN | RXACTIVE)},	/* NAND AD5 */
+	{OFFSET(gpmc_ad6), (MODE(0) | PULLUP_EN | RXACTIVE)},	/* NAND AD6 */
+	{OFFSET(gpmc_ad7), (MODE(0) | PULLUP_EN | RXACTIVE)},	/* NAND AD7 */
+	{OFFSET(gpmc_wait0), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* NAND WAIT */
+	{OFFSET(gpmc_wpn), (MODE(7) | PULLUP_EN | RXACTIVE)},	/* NAND_WPN */
+	{OFFSET(gpmc_csn0), (MODE(0) | PULLUDEN)},	/* NAND_CS0 */
+	{OFFSET(gpmc_advn_ale), (MODE(0) | PULLUDEN)}, /* NAND_ADV_ALE */
+	{OFFSET(gpmc_oen_ren), (MODE(0) | PULLUDEN)},	/* NAND_OE */
+	{OFFSET(gpmc_wen), (MODE(0) | PULLUDEN)},	/* NAND_WEN */
+	{OFFSET(gpmc_be0n_cle), (MODE(0) | PULLUDEN)},	/* NAND_BE_CLE */
+	{-1},
+};
+
+void enable_uart0_pin_mux(void)
+{
+	configure_module_pin_mux(uart0_pin_mux);
+}
+
+void enable_board_pin_mux()
+{
+	configure_module_pin_mux(i2c0_pin_mux);
+	configure_module_pin_mux(uart0_pin_mux);
+	configure_module_pin_mux(rmii1_pin_mux);
+	configure_module_pin_mux(mmc0_pin_mux);
+	configure_module_pin_mux(nand_pin_mux);
+}
diff --git a/boards.cfg b/boards.cfg
index 07ae05b..fc09fe1 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -254,6 +254,7 @@ Active  arm         armv7          am33xx
phytec          pcm051
 Active  arm         armv7          am33xx      siemens         dxr2
            dxr2                                 -

                                   Roger Meier <r.meier@siemens.com>
 Active  arm         armv7          am33xx      siemens         pxm2
            pxm2                                 -

                                   Roger Meier <r.meier@siemens.com>
 Active  arm         armv7          am33xx      siemens         rut
            rut                                  -

                                   Roger Meier <r.meier@siemens.com>
+Active  arm         armv7          am33xx      silica          pengwyn
            pengwyn                              -

                                   Lothar Felten <lothar.felten@gmail.com>
 Active  arm         armv7          am33xx      ti              am335x
            am335x_boneblack
am335x_evm:SERIAL1,CONS_INDEX=1,EMMC_BOOT
                                                          Tom Rini
<trini@ti.com>
 Active  arm         armv7          am33xx      ti              am335x
            am335x_evm
am335x_evm:SERIAL1,CONS_INDEX=1,NAND
                                                          Tom Rini
<trini@ti.com>
 Active  arm         armv7          am33xx      ti              am335x
            am335x_evm_nor
am335x_evm:SERIAL1,CONS_INDEX=1,NAND,NOR
                                                          Tom Rini
<trini@ti.com>
diff --git a/include/configs/pengwyn.h b/include/configs/pengwyn.h
new file mode 100644
index 0000000..65a1453
--- /dev/null
+++ b/include/configs/pengwyn.h
@@ -0,0 +1,340 @@
+/*
+ * pengwyn.h
+ *
+ * Copyright (C) 2013 Lothar Felten <lothar.felten@gmail.com>
+ *
+ * based on am335x_evm.h, Copyright (C) 2011 Texas Instruments Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __CONFIG_PENGWYN_H
+#define __CONFIG_PENGWYN_H
+
+#define CONFIG_NAND
+#define CONFIG_SERIAL1
+#define CONFIG_CONS_INDEX		1
+
+#include <configs/ti_am335x_common.h>
+
+#define MACH_TYPE_PENGWYN		1234
+#define CONFIG_MACH_TYPE		MACH_TYPE_PENGWYN
+
+/* Clock Defines */
+#define V_OSCK				24000000
+#define V_SCLK				(V_OSCK)
+
+/* Always 128 KiB env size */
+#define CONFIG_ENV_SIZE			(128 << 10)
+
+#ifdef CONFIG_NAND
+#define NANDARGS \
+	"mtdids=" MTDIDS_DEFAULT "\0" \
+	"mtdparts=" MTDPARTS_DEFAULT "\0" \
+	"nandargs=setenv bootargs console=${console} " \
+		"${optargs} " \
+		"root=${nandroot} " \
+		"rootfstype=${nandrootfstype}\0" \
+	"dfu_alt_info_nand=" DFU_ALT_INFO_NAND "\0" \
+	"nandroot=ubi0:rootfs rw ubi.mtd=7,2048\0" \
+	"nandrootfstype=ubifs rootwait=1\0" \
+	"nandsrcaddr=0x280000\0" \
+		"nandboot=echo Booting from nand ...; " \
+		"run nandargs; " \
+		"nand read ${loadaddr} ${nandsrcaddr} ${nandimgsize}; " \
+		"bootz ${loadaddr}\0" \
+	"nandimgsize=0x500000\0"
+#else
+#define NANDARGS ""
+#endif
+
+#define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
+
+#ifndef CONFIG_SPL_BUILD
+#define CONFIG_EXTRA_ENV_SETTINGS \
+	"loadaddr=0x80200000\0" \
+	"fdtaddr=0x80F80000\0" \
+	"fdt_high=0xffffffff\0" \
+	"boot_fdt=try\0" \
+	"rdaddr=0x81000000\0" \
+	"bootpart=0:2\0" \
+	"bootdir=/boot\0" \
+	"bootfile=zImage\0" \
+	"fdtfile=undefined\0" \
+	"console=ttyO0,115200n8\0" \
+	"optargs=\0" \
+	"dfu_alt_info_mmc=" DFU_ALT_INFO_MMC "\0" \
+	"dfu_alt_info_emmc=rawemmc mmc 0 3751936\0" \
+	"mmcdev=0\0" \
+	"mmcroot=/dev/mmcblk0p2 ro\0" \
+	"mmcrootfstype=ext4 rootwait\0" \
+	"rootpath=/export/rootfs\0" \
+	"nfsopts=nolock\0" \
+	"static_ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}" \
+		"::off\0" \
+	"ramroot=/dev/ram0 rw ramdisk_size=65536 initrd=${rdaddr},64M\0" \
+	"ramrootfstype=ext2\0" \
+	"mmcargs=setenv bootargs console=${console} " \
+		"${optargs} " \
+		"root=${mmcroot} " \
+		"rootfstype=${mmcrootfstype}\0" \
+	"spiroot=/dev/mtdblock4 rw\0" \
+	"spirootfstype=jffs2\0" \
+	"spisrcaddr=0xe0000\0" \
+	"spiimgsize=0x362000\0" \
+	"spibusno=0\0" \
+	"spiargs=setenv bootargs console=${console} " \
+		"${optargs} " \
+		"root=${spiroot} " \
+		"rootfstype=${spirootfstype}\0" \
+	"netargs=setenv bootargs console=${console} " \
+		"${optargs} " \
+		"root=/dev/nfs " \
+		"nfsroot=${serverip}:${rootpath},${nfsopts} rw " \
+		"ip=dhcp\0" \
+	"bootenv=uEnv.txt\0" \
+	"loadbootenv=load mmc ${mmcdev} ${loadaddr} ${bootenv}\0" \
+	"importbootenv=echo Importing environment from mmc ...; " \
+		"env import -t $loadaddr $filesize\0" \
+	"dfu_alt_info_ram=" DFU_ALT_INFO_RAM "\0" \
+	"ramargs=setenv bootargs console=${console} " \
+		"${optargs} " \
+		"root=${ramroot} " \
+		"rootfstype=${ramrootfstype}\0" \
+	"loadramdisk=load mmc ${mmcdev} ${rdaddr} ramdisk.gz\0" \
+	"loadimage=load mmc ${bootpart} ${loadaddr} ${bootdir}/${bootfile}\0" \
+	"loadfdt=load mmc ${bootpart} ${fdtaddr} ${bootdir}/${fdtfile}\0" \
+	"mmcloados=run mmcargs; " \
+		"if test ${boot_fdt} = yes || test ${boot_fdt} = try; then " \
+			"if run loadfdt; then " \
+				"bootz ${loadaddr} - ${fdtaddr}; " \
+			"else " \
+				"if test ${boot_fdt} = try; then " \
+					"bootz; " \
+				"else " \
+					"echo WARN: Cannot load the DT; " \
+				"fi; " \
+			"fi; " \
+		"else " \
+			"bootz; " \
+		"fi;\0" \
+	"mmcboot=mmc dev ${mmcdev}; " \
+		"if mmc rescan; then " \
+			"echo SD/MMC found on device ${mmcdev};" \
+			"if run loadbootenv; then " \
+				"echo Loaded environment from ${bootenv};" \
+				"run importbootenv;" \
+			"fi;" \
+			"if test -n $uenvcmd; then " \
+				"echo Running uenvcmd ...;" \
+				"run uenvcmd;" \
+			"fi;" \
+			"if run loadimage; then " \
+				"run mmcloados;" \
+			"fi;" \
+		"fi;\0" \
+	"spiboot=echo Booting from spi ...; " \
+		"run spiargs; " \
+		"sf probe ${spibusno}:0; " \
+		"sf read ${loadaddr} ${spisrcaddr} ${spiimgsize}; " \
+		"bootz ${loadaddr}\0" \
+	"netboot=echo Booting from network ...; " \
+		"setenv autoload no; " \
+		"dhcp; " \
+		"tftp ${loadaddr} ${bootfile}; " \
+		"tftp ${fdtaddr} ${fdtfile}; " \
+		"run netargs; " \
+		"bootz ${loadaddr} - ${fdtaddr}\0" \
+	"ramboot=echo Booting from ramdisk ...; " \
+		"run ramargs; " \
+		"bootz ${loadaddr} ${rdaddr} ${fdtaddr}\0" \
+	"findfdt="\
+		"if test $board_name = A335BONE; then " \
+			"setenv fdtfile am335x-bone.dtb; fi; " \
+		"if test $board_name = A335BNLT; then " \
+			"setenv fdtfile am335x-boneblack.dtb; fi; " \
+		"if test $board_name = A33515BB; then " \
+			"setenv fdtfile am335x-evm.dtb; fi; " \
+		"if test $board_name = A335X_SK; then " \
+			"setenv fdtfile am335x-evmsk.dtb; fi; " \
+		"if test $fdtfile = undefined; then " \
+			"echo WARNING: no device tree found; fi; \0" \
+	NANDARGS
+#endif
+
+#define CONFIG_BOOTCOMMAND \
+	"run findfdt; " \
+	"run mmcboot;" \
+	"setenv mmcdev 1; " \
+	"setenv bootpart 1:2; " \
+	"run mmcboot;" \
+	"run nandboot;"
+
+/* NS16550 Configuration */
+#define CONFIG_SYS_NS16550_COM1		0x44e09000	/* Base EVM has UART0 */
+#define CONFIG_SYS_NS16550_COM2		0x48022000	/* UART1 */
+#define CONFIG_SYS_NS16550_COM3		0x48024000	/* UART2 */
+#define CONFIG_SYS_NS16550_COM4		0x481a6000	/* UART3 */
+#define CONFIG_SYS_NS16550_COM5		0x481a8000	/* UART4 */
+#define CONFIG_SYS_NS16550_COM6		0x481aa000	/* UART5 */
+#define CONFIG_BAUDRATE			115200
+
+/* I2C Configuration */
+#define	CONFIG_SYS_I2C_SPEED		100000
+#define CONFIG_CMD_EEPROM
+#define CONFIG_ENV_EEPROM_IS_ON_I2C
+#define CONFIG_SYS_I2C_EEPROM_ADDR	0x50	/* Main EEPROM */
+#define CONFIG_SYS_I2C_EEPROM_ADDR_LEN	2
+#define CONFIG_SYS_I2C_MULTI_EEPROMS
+
+/* SPL */
+#define CONFIG_SPL_POWER_SUPPORT
+#define CONFIG_SPL_YMODEM_SUPPORT
+
+/* USB gadget RNDIS */
+#define CONFIG_SPL_MUSB_NEW_SUPPORT
+
+/* General network SPL, both CPSW and USB gadget RNDIS */
+#define CONFIG_SPL_NET_SUPPORT
+#define CONFIG_SPL_ENV_SUPPORT
+#define CONFIG_SPL_NET_VCI_STRING	"AM335x U-Boot SPL"
+
+/* NAND support */
+#ifdef CONFIG_NAND
+#define CONFIG_CMD_NAND
+#define CONFIG_ENV_IS_IN_NAND
+#define CONFIG_SYS_NAND_5_ADDR_CYCLE
+#define CONFIG_SYS_NAND_PAGE_COUNT	(CONFIG_SYS_NAND_BLOCK_SIZE / \
+					 CONFIG_SYS_NAND_PAGE_SIZE)
+#define CONFIG_SYS_NAND_PAGE_SIZE	2048
+#define CONFIG_SYS_NAND_OOBSIZE		64
+#define CONFIG_SYS_NAND_BLOCK_SIZE	(128*1024)
+#define CONFIG_SYS_NAND_BAD_BLOCK_POS	NAND_LARGE_BADBLOCK_POS
+#define CONFIG_SYS_NAND_ECCPOS		{ 2, 3, 4, 5, 6, 7, 8, 9, \
+					 10, 11, 12, 13, 14, 15, 16, 17, \
+					 18, 19, 20, 21, 22, 23, 24, 25, \
+					 26, 27, 28, 29, 30, 31, 32, 33, \
+					 34, 35, 36, 37, 38, 39, 40, 41, \
+					 42, 43, 44, 45, 46, 47, 48, 49, \
+					 50, 51, 52, 53, 54, 55, 56, 57, }
+
+#define CONFIG_SYS_NAND_ECCSIZE		512
+#define CONFIG_SYS_NAND_ECCBYTES	14
+
+#define CONFIG_SYS_NAND_U_BOOT_START	CONFIG_SYS_TEXT_BASE
+#define CONFIG_SYS_NAND_U_BOOT_OFFS	0x80000
+
+#define GPMC_NAND_ECC_LP_x8_LAYOUT	1
+#define MTDIDS_DEFAULT			"nand0=omap2-nand.0"
+#define MTDPARTS_DEFAULT		"mtdparts=omap2-nand.0:128k(SPL)," \
+					"128k(SPL.backup1)," \
+					"128k(SPL.backup2)," \
+					"128k(SPL.backup3),1792k(u-boot)," \
+					"128k(u-boot-spl-os)," \
+					"128k(u-boot-env),5m(kernel),-(rootfs)"
+#define CONFIG_ENV_OFFSET		0x260000 /* environment starts here */
+#define CONFIG_SYS_ENV_SECT_SIZE	(128 << 10)	/* 128 KiB */
+#else
+#define CONFIG_ENV_IS_NOWHERE
+#endif /* NAND */
+
+
+/*
+ * USB configuration.  We enable MUSB support, both for host and for
+ * gadget.  We set USB0 as peripheral and USB1 as host, based on the
+ * board schematic and physical port wired to each.  Then for host we
+ * add mass storage support and for gadget we add both RNDIS ethernet
+ * and DFU.
+ */
+#define CONFIG_USB_MUSB_DSPS
+#define CONFIG_ARCH_MISC_INIT
+#define CONFIG_MUSB_GADGET
+#define CONFIG_MUSB_PIO_ONLY
+#define CONFIG_MUSB_DISABLE_BULK_COMBINE_SPLIT
+#define CONFIG_USB_GADGET
+#define CONFIG_USBDOWNLOAD_GADGET
+#define CONFIG_USB_GADGET_DUALSPEED
+#define CONFIG_USB_GADGET_VBUS_DRAW	2
+#define CONFIG_MUSB_HOST
+#define CONFIG_AM335X_USB0
+#define CONFIG_AM335X_USB0_MODE	MUSB_PERIPHERAL
+#define CONFIG_AM335X_USB1
+#define CONFIG_AM335X_USB1_MODE MUSB_HOST
+
+#ifdef CONFIG_MUSB_HOST
+#define CONFIG_CMD_USB
+#define CONFIG_USB_STORAGE
+#endif
+
+#ifdef CONFIG_MUSB_GADGET
+#define CONFIG_USB_ETHER
+#define CONFIG_USB_ETH_RNDIS
+#define CONFIG_USBNET_HOST_ADDR	"de:ad:be:af:00:00"
+
+/* USB TI's IDs */
+#define CONFIG_G_DNL_VENDOR_NUM 0x0403
+#define CONFIG_G_DNL_PRODUCT_NUM 0xBD00
+#define CONFIG_G_DNL_MANUFACTURER "Texas Instruments"
+#endif /* CONFIG_MUSB_GADGET */
+
+#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_USBETH_SUPPORT)
+/* disable host part of MUSB in SPL */
+#undef CONFIG_MUSB_HOST
+/* Disable CPSW SPL support so we fit within the 101KiB limit. */
+#undef CONFIG_SPL_ETH_SUPPORT
+#endif
+
+/* USB Device Firmware Update support */
+#define CONFIG_DFU_FUNCTION
+#define CONFIG_DFU_MMC
+#define CONFIG_CMD_DFU
+#define DFU_ALT_INFO_MMC \
+	"boot part 0 1;" \
+	"rootfs part 0 2;" \
+	"MLO fat 0 1;" \
+	"MLO.raw mmc 100 100;" \
+	"u-boot.img.raw mmc 300 400;" \
+	"spl-os-args.raw mmc 80 80;" \
+	"spl-os-image.raw mmc 900 2000;" \
+	"spl-os-args fat 0 1;" \
+	"spl-os-image fat 0 1;" \
+	"u-boot.img fat 0 1;" \
+	"uEnv.txt fat 0 1"
+#ifdef CONFIG_NAND
+#define CONFIG_DFU_NAND
+#define DFU_ALT_INFO_NAND \
+	"SPL part 0 1;" \
+	"SPL.backup1 part 0 2;" \
+	"SPL.backup2 part 0 3;" \
+	"SPL.backup3 part 0 4;" \
+	"u-boot part 0 5;" \
+	"u-boot-spl-os part 0 6;" \
+	"kernel part 0 8;" \
+	"rootfs part 0 9"
+#endif
+#define CONFIG_DFU_RAM
+#define DFU_ALT_INFO_RAM \
+	"kernel ram 0x80200000 0xD80000;" \
+	"fdt ram 0x80F80000 0x80000;" \
+	"ramdisk ram 0x81000000 0x4000000"
+
+/* Network. */
+#define CONFIG_PHYLIB
+#define CONFIG_PHY_ADDR		1
+#define CONFIG_PHY_RESET	1
+#define CONFIG_PHY_NATSEMI
+
+/* CPSW support */
+#define CONFIG_SPL_ETH_SUPPORT
+
+#define CONFIG_SPL_LDSCRIPT		"$(CPUDIR)/am33xx/u-boot-spl.lds"
+
+#endif	/* ! __CONFIG_PENGWYN_H */
+