arm, am335x: add support for 3 siemens boards

add support for the am335x based boards from siemens:

dxr2:
  - DDR3 128MiB
  - NAND 256MiB
  - Ethernet with external Switch SMSC LAN9303
  - no PMIC
  - internal Watchdog
  - DFU support

pxm2:
  - DDR2 512 MiB
  - NAND 1024 MiB
  - PMIC
  - PHY atheros ar803x
  - USB Host
  - internal Watchdog
  - DFU support

rut:
  - DDR3 256 MiB
  - NAND 256 MiB
  - PMIC
  - PHY natsemi dp83630
  - external Watchdog
  - DFU support

Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Roger Meier <r.meier@siemens.com>
Signed-off-by: Samuel Egli <samuel.egli@siemens.com>
Cc: Pascal Bach <pascal.bach@siemens.com>
Cc: Tom Rini <trini@ti.com>

4 files changed, 471 insertions, 0 deletions

diff --git a/board/siemens/dxr2/Makefile b/board/siemens/dxr2/Makefile
new file mode 100644
index 0000000..a09b467
--- /dev/null
+++ b/board/siemens/dxr2/Makefile
@@ -0,0 +1,49 @@
+#
+# Makefile
+#
+# (C) Copyright 2013 Siemens Schweiz AG
+# (C) Heiko Schocher, DENX Software Engineering, hs@denx.de.
+#
+# Based on:
+# u-boot:/board/ti/am335x/Makefile
+# Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+include $(TOPDIR)/config.mk
+ifneq ($(OBJTREE),$(SRCTREE))
+$(shell mkdir -p $(obj)../common)
+endif
+
+LIB	= $(obj)lib$(BOARD).o
+
+ifdef CONFIG_SPL_BUILD
+COBJS	:= mux.o
+endif
+
+COBJS	+= board.o
+ifndef CONFIG_SPL_BUILD
+COBJS += ../common/factoryset.o
+endif
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+SOBJS	:= $(addprefix $(obj),$(SOBJS))
+
+$(LIB):	$(obj).depend $(OBJS) $(SOBJS)
+	$(call cmd_link_o_target, $(OBJS) $(SOBJS))
+
+clean:
+	rm -f $(SOBJS) $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak $(obj).depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/siemens/dxr2/board.c b/board/siemens/dxr2/board.c
new file mode 100644
index 0000000..af9d84f
--- /dev/null
+++ b/board/siemens/dxr2/board.c
@@ -0,0 +1,241 @@
+/*
+ * Board functions for TI AM335X based dxr2 board
+ * (C) Copyright 2013 Siemens Schweiz AG
+ * (C) Heiko Schocher, DENX Software Engineering, hs@denx.de.
+ *
+ * Based on:
+ *
+ * Board functions for TI AM335X based boards
+ * u-boot:/board/ti/am335x/board.c
+ *
+ * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#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 <watchdog.h>
+#include "board.h"
+#include "../common/factoryset.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_SPL_BUILD
+static struct dxr2_baseboard_id __attribute__((section(".data"))) settings;
+
+const struct ddr3_data ddr3_default = {
+	0x33524444, 0x56312e33, 0x0100, 0x0001, 0x003A, 0x008A, 0x010B,
+	0x00C4, 0x0888A39B, 0x26247FDA, 0x501F821F, 0x0006, 0x61C04AB2,
+	0x00000618,
+};
+
+static void set_default_ddr3_timings(void)
+{
+	printf("Set default DDR3 settings\n");
+	settings.ddr3 = ddr3_default;
+}
+
+static void print_ddr3_timings(void)
+{
+	printf("\n\nDDR3 Timing parameters:\n");
+	printf("Diff     Eeprom  Default\n");
+	PRINTARGS(magic);
+	PRINTARGS(version);
+	PRINTARGS(ddr3_sratio);
+	PRINTARGS(iclkout);
+
+	PRINTARGS(dt0rdsratio0);
+	PRINTARGS(dt0wdsratio0);
+	PRINTARGS(dt0fwsratio0);
+	PRINTARGS(dt0wrsratio0);
+
+	PRINTARGS(sdram_tim1);
+	PRINTARGS(sdram_tim2);
+	PRINTARGS(sdram_tim3);
+
+	PRINTARGS(emif_ddr_phy_ctlr_1);
+
+	PRINTARGS(sdram_config);
+	PRINTARGS(ref_ctrl);
+}
+
+static void print_chip_data(void)
+{
+	printf("\n");
+	printf("Device: '%s'\n", settings.chip.sdevname);
+	printf("HW version: '%s'\n", settings.chip.shwver);
+}
+#endif /* CONFIG_SPL_BUILD */
+
+/*
+ * Read header information from EEPROM into global structure.
+ */
+static int read_eeprom(void)
+{
+	/* Check if baseboard eeprom is available */
+	if (i2c_probe(CONFIG_SYS_I2C_EEPROM_ADDR)) {
+		printf("Could not probe the EEPROM; something fundamentally wrong on the I2C bus.\n");
+		return 1;
+	}
+
+#ifdef CONFIG_SPL_BUILD
+	/* Read Siemens eeprom data (DDR3) */
+	if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, EEPROM_ADDR_DDR3, 2,
+		     (uchar *)&settings.ddr3, sizeof(struct ddr3_data))) {
+		printf("Could not read the EEPROM; something fundamentally wrong on the I2C bus.\nUse default DDR3 timings\n");
+		set_default_ddr3_timings();
+	}
+	/* Read Siemens eeprom data (CHIP) */
+	if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, EEPROM_ADDR_CHIP, 2,
+		     (uchar *)&settings.chip, sizeof(settings.chip)))
+		printf("Could not read chip settings\n");
+
+	if (ddr3_default.magic == settings.ddr3.magic &&
+	    ddr3_default.version == settings.ddr3.version) {
+		printf("Using DDR3 settings from EEPROM\n");
+	} else {
+		if (ddr3_default.magic != settings.ddr3.magic)
+			printf("Error: No valid DDR3 data in eeprom.\n");
+		if (ddr3_default.version != settings.ddr3.version)
+			printf("Error: DDR3 data version does not match.\n");
+
+		printf("Using default settings\n");
+		set_default_ddr3_timings();
+	}
+
+	if (MAGIC_CHIP == settings.chip.magic) {
+		printf("Valid chip data in eeprom\n");
+		print_chip_data();
+	} else {
+		printf("Error: No chip data in eeprom\n");
+	}
+
+	print_ddr3_timings();
+#endif
+	return 0;
+}
+
+#ifdef CONFIG_SPL_BUILD
+static void board_init_ddr(void)
+{
+struct emif_regs dxr2_ddr3_emif_reg_data = {
+	.zq_config = 0x50074BE4,
+};
+
+struct ddr_data dxr2_ddr3_data = {
+	.datadldiff0 = PHY_DLL_LOCK_DIFF,
+};
+
+struct cmd_control dxr2_ddr3_cmd_ctrl_data = {
+	.cmd0dldiff = 0,
+	.cmd1dldiff = 0,
+	.cmd2dldiff = 0,
+};
+	/* pass values from eeprom */
+	dxr2_ddr3_emif_reg_data.sdram_tim1 = settings.ddr3.sdram_tim1;
+	dxr2_ddr3_emif_reg_data.sdram_tim2 = settings.ddr3.sdram_tim2;
+	dxr2_ddr3_emif_reg_data.sdram_tim3 = settings.ddr3.sdram_tim3;
+	dxr2_ddr3_emif_reg_data.emif_ddr_phy_ctlr_1 =
+		settings.ddr3.emif_ddr_phy_ctlr_1;
+	dxr2_ddr3_emif_reg_data.sdram_config = settings.ddr3.sdram_config;
+	dxr2_ddr3_emif_reg_data.ref_ctrl = settings.ddr3.ref_ctrl;
+
+	dxr2_ddr3_data.datardsratio0 = settings.ddr3.dt0rdsratio0;
+	dxr2_ddr3_data.datawdsratio0 = settings.ddr3.dt0wdsratio0;
+	dxr2_ddr3_data.datafwsratio0 = settings.ddr3.dt0fwsratio0;
+	dxr2_ddr3_data.datawrsratio0 = settings.ddr3.dt0wrsratio0;
+
+	dxr2_ddr3_cmd_ctrl_data.cmd0csratio = settings.ddr3.ddr3_sratio;
+	dxr2_ddr3_cmd_ctrl_data.cmd0iclkout = settings.ddr3.iclkout;
+	dxr2_ddr3_cmd_ctrl_data.cmd1csratio = settings.ddr3.ddr3_sratio;
+	dxr2_ddr3_cmd_ctrl_data.cmd1iclkout = settings.ddr3.iclkout;
+	dxr2_ddr3_cmd_ctrl_data.cmd2csratio = settings.ddr3.ddr3_sratio;
+	dxr2_ddr3_cmd_ctrl_data.cmd2iclkout = settings.ddr3.iclkout;
+
+	config_ddr(DDR_PLL_FREQ, DXR2_IOCTRL_VAL, &dxr2_ddr3_data,
+		   &dxr2_ddr3_cmd_ctrl_data, &dxr2_ddr3_emif_reg_data, 0);
+}
+
+static void spl_siemens_board_init(void)
+{
+	return;
+}
+#endif /* if def CONFIG_SPL_BUILD */
+
+#if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \
+	(defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD))
+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_MII,
+	},
+};
+
+static struct cpsw_platform_data cpsw_data = {
+	.mdio_base		= CPSW_MDIO_BASE,
+	.cpsw_base		= CPSW_BASE,
+	.mdio_div		= 0xff,
+	.channels		= 4,
+	.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,
+};
+
+#if defined(CONFIG_DRIVER_TI_CPSW) || \
+	(defined(CONFIG_USB_ETHER) && defined(CONFIG_MUSB_GADGET))
+int board_eth_init(bd_t *bis)
+{
+	struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
+	int n = 0;
+	int rv;
+
+	factoryset_setenv();
+
+	/* Set rgmii mode and enable rmii clock to be sourced from chip */
+	writel((RMII_MODE_ENABLE | RMII_CHIPCKL_ENABLE), &cdev->miisel);
+
+	rv = cpsw_register(&cpsw_data);
+	if (rv < 0)
+		printf("Error %d registering CPSW switch\n", rv);
+	else
+		n += rv;
+	return n;
+}
+#endif /* #if defined(CONFIG_DRIVER_TI_CPSW) */
+#endif /* #if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) */
+
+#include "../common/board.c"
diff --git a/board/siemens/dxr2/board.h b/board/siemens/dxr2/board.h
new file mode 100644
index 0000000..2be78fb
--- /dev/null
+++ b/board/siemens/dxr2/board.h
@@ -0,0 +1,69 @@
+/*
+ * board.h
+ *
+ * (C) Copyright 2013 Siemens Schweiz AG
+ * (C) Heiko Schocher, DENX Software Engineering, hs@denx.de.
+ *
+ * Based on:
+ * TI AM335x boards information header
+ * u-boot:/board/ti/am335x/board.h
+ *
+ * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _BOARD_H_
+#define _BOARD_H_
+
+#define PARGS3(x)	settings.ddr3.x-ddr3_default.x, \
+			settings.ddr3.x, ddr3_default.x
+#define PRINTARGS(y)	printf("%x, %8x, %8x : "#y"\n", PARGS3(y))
+#define MAGIC_CHIP	0x50494843
+
+/* Automatic generated definition */
+/* Wed, 19 Jun 2013 10:57:48 +0200 */
+/* From file: draco/ddr3-data-micron.txt */
+struct ddr3_data {
+	unsigned int magic;			/* 0x33524444 */
+	unsigned int version;			/* 0x56312e33 */
+	unsigned short int ddr3_sratio;		/* 0x0100 */
+	unsigned short int iclkout;		/* 0x0001 */
+	unsigned short int dt0rdsratio0;	/* 0x003A */
+	unsigned short int dt0wdsratio0;	/* 0x008A */
+	unsigned short int dt0fwsratio0;	/* 0x010B */
+	unsigned short int dt0wrsratio0;	/* 0x00C4 */
+	unsigned int sdram_tim1;		/* 0x0888A39B */
+	unsigned int sdram_tim2;		/* 0x26247FDA */
+	unsigned int sdram_tim3;		/* 0x501F821F */
+	unsigned short int emif_ddr_phy_ctlr_1;	/* 0x0006 */
+	unsigned int sdram_config;		/* 0x61C04AB2 */
+	unsigned int ref_ctrl;			/* 0x00000618 */
+};
+
+struct chip_data {
+	unsigned int  magic;
+	char sdevname[16];
+	char shwver[7];
+};
+
+struct dxr2_baseboard_id {
+	struct ddr3_data ddr3;
+	struct chip_data chip;
+};
+
+/*
+ * We have three pin mux functions that must exist.  We must be able to enable
+ * uart0, for initial output and i2c0 to read the main EEPROM.  We then have a
+ * main pinmux function that can be overridden to enable all other pinmux that
+ * is required on the board.
+ */
+void enable_uart0_pin_mux(void);
+void enable_uart1_pin_mux(void);
+void enable_uart2_pin_mux(void);
+void enable_uart3_pin_mux(void);
+void enable_uart4_pin_mux(void);
+void enable_uart5_pin_mux(void);
+void enable_i2c0_pin_mux(void);
+void enable_board_pin_mux(void);
+#endif
diff --git a/board/siemens/dxr2/mux.c b/board/siemens/dxr2/mux.c
new file mode 100644
index 0000000..bc80b79
--- /dev/null
+++ b/board/siemens/dxr2/mux.c
@@ -0,0 +1,112 @@
+/*
+ * pinmux setup for siemens dxr2 board
+ *
+ * (C) Copyright 2013 Siemens Schweiz AG
+ * (C) Heiko Schocher, DENX Software Engineering, hs@denx.de.
+ *
+ * Based on:
+ * u-boot:/board/ti/am335x/mux.c
+ * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/mux.h>
+#include <asm/io.h>
+#include <i2c.h>
+#include "board.h"
+
+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},
+};
+
+static struct module_pin_mux uart3_pin_mux[] = {
+	{OFFSET(spi0_cs1), (MODE(1) | PULLUP_EN | RXACTIVE)},	/* UART3_RXD */
+	{OFFSET(ecap0_in_pwm0_out), (MODE(1) | PULLUDEN)},	/* UART3_TXD */
+	{-1},
+};
+
+static struct module_pin_mux i2c0_pin_mux[] = {
+	{OFFSET(i2c0_sda), (MODE(0) | RXACTIVE |
+			PULLUDEN | SLEWCTRL)}, /* I2C_DATA */
+	{OFFSET(i2c0_scl), (MODE(0) | RXACTIVE |
+			PULLUDEN | SLEWCTRL)}, /* I2C_SCLK */
+	{-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},
+};
+
+static struct module_pin_mux gpios_pin_mux[] = {
+	/* DFU button GPIO0_27*/
+	{OFFSET(gpmc_ad11), (MODE(7) | PULLUDEN | RXACTIVE)},
+	{OFFSET(gpmc_csn3), MODE(7) },			/* LED0 GPIO2_0 */
+	{OFFSET(emu0), MODE(7)},			/* LED1 GPIO3_7 */
+	{-1},
+};
+
+static struct module_pin_mux ethernet_pin_mux[] = {
+	{OFFSET(mii1_col), (MODE(3) | RXACTIVE)},
+	{OFFSET(mii1_crs), (MODE(1) | RXACTIVE)},
+	{OFFSET(mii1_rxerr), (MODE(1) | RXACTIVE)},
+	{OFFSET(mii1_txen), (MODE(1))},
+	{OFFSET(mii1_rxdv), (MODE(3) | RXACTIVE)},
+	{OFFSET(mii1_txd3), (MODE(7) | RXACTIVE)},
+	{OFFSET(mii1_txd2), (MODE(7) | RXACTIVE)},
+	{OFFSET(mii1_txd1), (MODE(1))},
+	{OFFSET(mii1_txd0), (MODE(1))},
+	{OFFSET(mii1_txclk), (MODE(1) | RXACTIVE)},
+	{OFFSET(mii1_rxclk), (MODE(1) | RXACTIVE)},
+	{OFFSET(mii1_rxd3), (MODE(1) | RXACTIVE)},
+	{OFFSET(mii1_rxd2), (MODE(1))},
+	{OFFSET(mii1_rxd1), (MODE(1) | RXACTIVE)},
+	{OFFSET(mii1_rxd0), (MODE(1) | RXACTIVE)},
+	{OFFSET(rmii1_refclk), (MODE(0) | RXACTIVE)},
+	{OFFSET(mdio_data), (MODE(0) | RXACTIVE | PULLUP_EN)},
+	{OFFSET(mdio_clk), (MODE(0) | PULLUP_EN)},
+	{-1},
+};
+
+void enable_uart0_pin_mux(void)
+{
+	configure_module_pin_mux(uart0_pin_mux);
+}
+
+void enable_uart3_pin_mux(void)
+{
+	configure_module_pin_mux(uart3_pin_mux);
+}
+
+void enable_i2c0_pin_mux(void)
+{
+	configure_module_pin_mux(i2c0_pin_mux);
+}
+
+void enable_board_pin_mux(void)
+{
+	enable_uart3_pin_mux();
+	configure_module_pin_mux(nand_pin_mux);
+	configure_module_pin_mux(ethernet_pin_mux);
+	configure_module_pin_mux(gpios_pin_mux);
+}