lpc32xx: devkit3250: update of board configuration

This change adds more peripherals to Timll DevKit3250 board, namely
MAC and SMSC phy, SLC NAND, GPIO, SPI and I2C.

Also the default serial console is changed to UART5, added an option
to pass device tree blob by means of bootm, predefined environment
variables are slightly extended and reserved space on NAND to store
user defined U-boot environment.

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>

board/timll/devkit3250/devkit3250.c

@@ -1,23 +1,52 @@
 /*
  * Embest/Timll DevKit3250 board support
  *
- * Copyright (C) 2011 Vladimir Zapolskiy <vz@mleia.com>
+ * Copyright (C) 2011-2015 Vladimir Zapolskiy <vz@mleia.com>
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
 #include <asm/arch/sys_proto.h>
+#include <asm/arch/clk.h>
 #include <asm/arch/cpu.h>
 #include <asm/arch/emc.h>
+#include <asm/arch/wdt.h>
+#include <asm/io.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
 static struct emc_regs *emc = (struct emc_regs *)EMC_BASE;
+static struct clk_pm_regs *clk = (struct clk_pm_regs *)CLK_PM_BASE;
+static struct wdt_regs *wdt = (struct wdt_regs *)WDT_BASE;
+
+void reset_periph(void)
+{
+	/* This function resets peripherals by triggering RESOUT_N */
+	setbits_le32(&clk->timclk_ctrl, CLK_TIMCLK_WATCHDOG);
+	writel(WDTIM_MCTRL_RESFRC1, &wdt->mctrl);
+	udelay(300);
+
+	writel(0, &wdt->mctrl);
+	clrbits_le32(&clk->timclk_ctrl, CLK_TIMCLK_WATCHDOG);
+
+	/* Such a long delay is needed to initialize SMSC phy */
+	udelay(10000);
+}
 
 int board_early_init_f(void)
 {
 	lpc32xx_uart_init(CONFIG_SYS_LPC32XX_UART);
+	lpc32xx_i2c_init(1);
+	lpc32xx_i2c_init(2);
+	lpc32xx_ssp_init();
+	lpc32xx_mac_init();
+
+	/*
+	 * nWP may be controlled by GPO19, but unpopulated by default R23
+	 * makes no sense to configure this GPIO level, nWP is always high
+	 */
+	lpc32xx_slc_nand_init();
 
 	return 0;
 }

configs/devkit3250_defconfig

@@ -1,3 +1,6 @@
 CONFIG_ARM=y
 CONFIG_TARGET_DEVKIT3250=y
+# CONFIG_CMD_FPGA is not set
 # CONFIG_CMD_SETEXPR is not set
+CONFIG_DM=y
+CONFIG_DM_GPIO=y

include/configs/devkit3250.h

@@ -1,7 +1,7 @@
 /*
  * Embest/Timll DevKit3250 board configuration file
  *
- * Copyright (C) 2011 Vladimir Zapolskiy <vz@mleia.com>
+ * Copyright (C) 2011-2015 Vladimir Zapolskiy <vz@mleia.com>
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */
@@ -43,9 +43,43 @@
 /*
  * Serial Driver
  */
-#define CONFIG_SYS_LPC32XX_UART		2   /* UART2 */
+#define CONFIG_SYS_LPC32XX_UART		5   /* UART5 */
 #define CONFIG_BAUDRATE			115200
 
+/*
+ * I2C
+ */
+#define CONFIG_SYS_I2C
+#define CONFIG_SYS_I2C_LPC32XX
+#define CONFIG_SYS_I2C_SPEED		100000
+#define CONFIG_CMD_I2C
+
+/*
+ * GPIO
+ */
+#define CONFIG_LPC32XX_GPIO
+#define CONFIG_CMD_GPIO
+
+/*
+ * SSP/SPI
+ */
+#define CONFIG_LPC32XX_SSP
+#define CONFIG_LPC32XX_SSP_TIMEOUT	100000
+#define CONFIG_CMD_SPI
+
+/*
+ * Ethernet
+ */
+#define CONFIG_RMII
+#define CONFIG_PHY_SMSC
+#define CONFIG_LPC32XX_ETH
+#define CONFIG_PHYLIB
+#define CONFIG_PHY_ADDR			0x1F
+#define CONFIG_SYS_FAULT_ECHO_LINK_DOWN
+#define CONFIG_CMD_MII
+#define CONFIG_CMD_PING
+#define CONFIG_CMD_DHCP
+
 /*
  * NOR Flash
  */
@@ -55,6 +89,29 @@
 #define CONFIG_SYS_FLASH_SIZE		SZ_4M
 #define CONFIG_SYS_FLASH_CFI
 
+/*
+ * NAND controller
+ */
+#define CONFIG_NAND_LPC32XX_SLC
+#define CONFIG_SYS_NAND_BASE		SLC_NAND_BASE
+#define CONFIG_SYS_MAX_NAND_DEVICE	1
+#define CONFIG_SYS_NAND_BASE_LIST	{ CONFIG_SYS_NAND_BASE }
+
+/*
+ * NAND chip timings
+ */
+#define CONFIG_LPC32XX_NAND_SLC_WDR_CLKS	14
+#define CONFIG_LPC32XX_NAND_SLC_WWIDTH		66666666
+#define CONFIG_LPC32XX_NAND_SLC_WHOLD		200000000
+#define CONFIG_LPC32XX_NAND_SLC_WSETUP		50000000
+#define CONFIG_LPC32XX_NAND_SLC_RDR_CLKS	14
+#define CONFIG_LPC32XX_NAND_SLC_RWIDTH		66666666
+#define CONFIG_LPC32XX_NAND_SLC_RHOLD		200000000
+#define CONFIG_LPC32XX_NAND_SLC_RSETUP		50000000
+
+#define CONFIG_SYS_NAND_USE_FLASH_BBT
+#define CONFIG_CMD_NAND
+
 /*
  * U-Boot General Configurations
  */
@@ -71,8 +128,33 @@
 #define CONFIG_DISPLAY_CPUINFO
 #define CONFIG_DOS_PARTITION
 
-#define CONFIG_ENV_IS_NOWHERE
+/*
+ * Pass open firmware flat tree
+ */
+#define CONFIG_OF_LIBFDT
+
+/*
+ * Environment
+ */
+#define CONFIG_ENV_IS_IN_NAND		1
 #define CONFIG_ENV_SIZE			SZ_128K
+#define CONFIG_ENV_OFFSET		0x000A0000
+
+#define CONFIG_BOOTCOMMAND			\
+	"dhcp; "				\
+	"tftp ${loadaddr} ${serverip}:${tftpdir}/${bootfile}; "		\
+	"tftp ${dtbaddr} ${serverip}:${tftpdir}/devkit3250.dtb; "	\
+	"setenv nfsargs ip=dhcp root=/dev/nfs nfsroot=${serverip}:${nfsroot},tcp; "	\
+	"setenv bootargs ${bootargs} ${nfsargs} ${userargs}; "			\
+	"bootm ${loadaddr} - ${dtbaddr}"
+
+#define CONFIG_EXTRA_ENV_SETTINGS		\
+	"autoload=no\0"				\
+	"ethaddr=00:01:90:00:C0:81\0"		\
+	"dtbaddr=0x81000000\0"			\
+	"nfsroot=/opt/projects/images/vladimir/oe/devkit3250/rootfs\0"	\
+	"tftpdir=vladimir/oe/devkit3250\0"	\
+	"userargs=oops=panic\0"
 
 /*
  * U-Boot Commands
@@ -85,10 +167,10 @@
 #define CONFIG_CMDLINE_TAG
 #define CONFIG_SETUP_MEMORY_TAGS
 #define CONFIG_ZERO_BOOTDELAY_CHECK
-#define CONFIG_BOOTDELAY		3
+#define CONFIG_BOOTDELAY		1
 
 #define CONFIG_BOOTFILE			"uImage"
-#define CONFIG_BOOTARGS			"console=ttyS2,115200n8"
+#define CONFIG_BOOTARGS			"console=ttyS0,115200n8"
 #define CONFIG_LOADADDR			0x80008000
 
 /*