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>

3 files changed, 482 insertions, 0 deletions

diff --git a/board/siemens/common/board.c b/board/siemens/common/board.c
new file mode 100644
index 0000000..6279c32
--- /dev/null
+++ b/board/siemens/common/board.c
@@ -0,0 +1,171 @@
+/*
+ * Common board functions for siemens AM335X based boards
+ * (C) Copyright 2013 Siemens Schweiz AG
+ * (C) Heiko Schocher, DENX Software Engineering, hs@denx.de.
+ *
+ * Based on:
+ * U-Boot file:/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 "../common/factoryset.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_SPL_BUILD
+void set_uart_mux_conf(void)
+{
+	enable_uart0_pin_mux();
+}
+
+void set_mux_conf_regs(void)
+{
+	/* Initalize the board header */
+	enable_i2c0_pin_mux();
+	i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
+	if (read_eeprom() < 0)
+		puts("Could not get board ID.\n");
+
+	enable_board_pin_mux();
+}
+
+void sdram_init(void)
+{
+	spl_siemens_board_init();
+	board_init_ddr();
+
+	return;
+}
+#endif /* #ifdef CONFIG_SPL_BUILD */
+
+#ifndef CONFIG_SPL_BUILD
+/*
+ * Basic board specific setup.  Pinmux has been handled already.
+ */
+int board_init(void)
+{
+#if defined(CONFIG_HW_WATCHDOG)
+	hw_watchdog_init();
+#endif /* defined(CONFIG_HW_WATCHDOG) */
+	i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
+	if (read_eeprom() < 0)
+		puts("Could not get board ID.\n");
+
+	gd->bd->bi_arch_number = CONFIG_MACH_TYPE;
+	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
+
+#ifdef CONFIG_FACTORYSET
+	factoryset_read_eeprom(CONFIG_SYS_I2C_EEPROM_ADDR);
+#endif
+	gpmc_init();
+
+#ifdef CONFIG_VIDEO
+	board_video_init();
+#endif
+
+	return 0;
+}
+#endif /* #ifndef CONFIG_SPL_BUILD */
+
+#define OSC	(V_OSCK/1000000)
+const struct dpll_params dpll_ddr = {
+		DDR_PLL_FREQ, OSC-1, 1, -1, -1, -1, -1};
+
+const struct dpll_params *get_dpll_ddr_params(void)
+{
+	return &dpll_ddr;
+}
+
+#ifdef CONFIG_BOARD_LATE_INIT
+int board_late_init(void)
+{
+	omap_nand_switch_ecc(1, 8);
+
+	return 0;
+}
+#endif
+
+#ifndef CONFIG_SPL_BUILD
+#if defined(BOARD_DFU_BUTTON_GPIO)
+/*
+ * This command returns the status of the user button on
+ * Input - none
+ * Returns -	1 if button is held down
+ *		0 if button is not held down
+ */
+static int
+do_userbutton(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	int button = 0;
+	int gpio;
+
+	gpio = BOARD_DFU_BUTTON_GPIO;
+	gpio_request(gpio, "DFU");
+	gpio_direction_input(gpio);
+	if (gpio_get_value(gpio))
+		button = 1;
+	else
+		button = 0;
+
+	gpio_free(gpio);
+	if (!button) {
+		/* LED0 - RED=1: GPIO2_0 2*32 = 64 */
+		gpio_request(BOARD_DFU_BUTTON_LED, "");
+		gpio_direction_output(BOARD_DFU_BUTTON_LED, 1);
+		gpio_set_value(BOARD_DFU_BUTTON_LED, 1);
+	}
+
+	return button;
+}
+
+U_BOOT_CMD(
+	dfubutton, CONFIG_SYS_MAXARGS, 1, do_userbutton,
+	"Return the status of the DFU button",
+	""
+);
+#endif
+
+static int
+do_usertestwdt(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	printf("\n\n\n Go into infinite loop\n\n\n");
+	while (1)
+		;
+	return 0;
+};
+
+U_BOOT_CMD(
+	testwdt, CONFIG_SYS_MAXARGS, 1,	do_usertestwdt,
+	"Sends U-Boot into infinite loop",
+	""
+);
+
+#ifndef CONFIG_SYS_DCACHE_OFF
+void enable_caches(void)
+{
+	printf("Enable d-cache\n");
+	/* Enable D-cache. I-cache is already enabled in start.S */
+	dcache_enable();
+}
+#endif /* CONFIG_SYS_DCACHE_OFF */
+#endif /* !CONFIG_SPL_BUILD */
diff --git a/board/siemens/common/factoryset.c b/board/siemens/common/factoryset.c
new file mode 100644
index 0000000..eda9141
--- /dev/null
+++ b/board/siemens/common/factoryset.c
@@ -0,0 +1,284 @@
+/*
+ *
+ * Read FactorySet information from EEPROM into global structure.
+ * (C) Copyright 2013 Siemens Schweiz AG
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#if !defined(CONFIG_SPL_BUILD)
+
+#include <common.h>
+#include <i2c.h>
+#include <asm/io.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/unaligned.h>
+#include <net.h>
+#include <usbdescriptors.h>
+#include "factoryset.h"
+
+#define EEPR_PG_SZ		0x80
+#define EEPROM_FATORYSET_OFFSET	0x400
+#define OFF_PG            EEPROM_FATORYSET_OFFSET/EEPR_PG_SZ
+
+/* Global variable that contains necessary information from FactorySet */
+struct factorysetcontainer factory_dat;
+
+#define fact_get_char(i) *((char *)&eeprom_buf[i])
+
+static int fact_match(unsigned char *eeprom_buf, uchar *s1, int i2)
+{
+	if (s1 == NULL)
+		return -1;
+
+	while (*s1 == fact_get_char(i2++))
+		if (*s1++ == '=')
+			return i2;
+
+	if (*s1 == '\0' && fact_get_char(i2-1) == '=')
+		return i2;
+
+	return -1;
+}
+
+static int get_factory_val(unsigned char *eeprom_buf, int size, uchar *name,
+			uchar *buf, int len)
+{
+	int i, nxt = 0;
+
+	for (i = 0; fact_get_char(i) != '\0'; i = nxt + 1) {
+		int val, n;
+
+		for (nxt = i; fact_get_char(nxt) != '\0'; ++nxt) {
+			if (nxt >= size)
+				return -1;
+		}
+
+		val = fact_match(eeprom_buf, (uchar *)name, i);
+		if (val < 0)
+			continue;
+
+		/* found; copy out */
+		for (n = 0; n < len; ++n, ++buf) {
+			*buf = fact_get_char(val++);
+			if (*buf == '\0')
+				return n;
+		}
+
+		if (n)
+			*--buf = '\0';
+
+		printf("env_buf [%d bytes] too small for value of \"%s\"\n",
+		       len, name);
+
+		return n;
+	}
+	return -1;
+}
+
+static
+int get_factory_record_val(unsigned char *eeprom_buf, int size,	uchar *record,
+	uchar *name, uchar *buf, int len)
+{
+	int ret = -1;
+	int i, nxt = 0;
+	int c;
+	unsigned char end = 0xff;
+
+	for (i = 0; fact_get_char(i) != end; i = nxt) {
+		nxt = i + 1;
+		if (fact_get_char(i) == '>') {
+			int pos;
+			int endpos;
+			int z;
+
+			c = strncmp((char *)&eeprom_buf[i + 1], (char *)record,
+				    strlen((char *)record));
+			if (c == 0) {
+				/* record found */
+				pos = i + strlen((char *)record) + 2;
+				nxt = pos;
+				/* search for "<" */
+				c = -1;
+				for (z = pos; fact_get_char(z) != end; z++) {
+					if ((fact_get_char(z) == '<')  ||
+					    (fact_get_char(z) == '>')) {
+						endpos = z;
+						nxt = endpos;
+						c = 0;
+						break;
+					}
+				}
+			}
+			if (c == 0) {
+				/* end found -> call get_factory_val */
+				eeprom_buf[endpos] = end;
+				ret = get_factory_val(&eeprom_buf[pos],
+					size - pos, name, buf, len);
+				/* fix buffer */
+				eeprom_buf[endpos] = '<';
+				debug("%s: %s.%s = %s\n",
+				      __func__, record, name, buf);
+				return ret;
+			}
+		}
+	}
+	return ret;
+}
+
+int factoryset_read_eeprom(int i2c_addr)
+{
+	int i, pages = 0, size = 0;
+	unsigned char eeprom_buf[0x3c00], hdr[4], buf[MAX_STRING_LENGTH];
+	unsigned char *cp, *cp1;
+
+#if defined(CONFIG_DFU_FUNCTION)
+	factory_dat.usb_vendor_id = CONFIG_G_DNL_VENDOR_NUM;
+	factory_dat.usb_product_id = CONFIG_G_DNL_PRODUCT_NUM;
+#endif
+	if (i2c_probe(i2c_addr))
+		goto err;
+
+	if (i2c_read(i2c_addr, EEPROM_FATORYSET_OFFSET, 2, hdr, sizeof(hdr)))
+		goto err;
+
+	if ((hdr[0] != 0x99) || (hdr[1] != 0x80)) {
+		printf("FactorySet is not right in eeprom.\n");
+		return 1;
+	}
+
+	/* get FactorySet size */
+	size = (hdr[2] << 8) + hdr[3] + sizeof(hdr);
+	if (size > 0x3bfa)
+		size = 0x3bfa;
+
+	pages = size / EEPR_PG_SZ;
+
+	/*
+	 * read the eeprom using i2c
+	 * I can not read entire eeprom in once, so separate into several
+	 * times. Furthermore, fetch eeprom take longer time, so we fetch
+	 * data after every time we got a record from eeprom
+	 */
+	debug("Read eeprom page :\n");
+	for (i = 0; i < pages; i++)
+		if (i2c_read(i2c_addr, (OFF_PG + i) * EEPR_PG_SZ, 2,
+			     eeprom_buf + (i * EEPR_PG_SZ), EEPR_PG_SZ))
+			goto err;
+
+	if (size % EEPR_PG_SZ)
+		if (i2c_read(i2c_addr, (OFF_PG + pages) * EEPR_PG_SZ, 2,
+			     eeprom_buf + (pages * EEPR_PG_SZ),
+			     (size % EEPR_PG_SZ)))
+			goto err;
+
+	/* we do below just for eeprom align */
+	for (i = 0; i < size; i++)
+		if (eeprom_buf[i] == '\n')
+			eeprom_buf[i] = 0;
+
+	/* skip header */
+	size -= sizeof(hdr);
+	cp = (uchar *)eeprom_buf + sizeof(hdr);
+
+	/* get mac address */
+	get_factory_record_val(cp, size, (uchar *)"ETH1", (uchar *)"mac",
+			       buf, MAX_STRING_LENGTH);
+	cp1 = buf;
+	for (i = 0; i < 6; i++) {
+		factory_dat.mac[i] = simple_strtoul((char *)cp1, NULL, 16);
+		cp1 += 3;
+	}
+
+#if defined(CONFIG_DFU_FUNCTION)
+	/* read vid and pid for dfu mode */
+	if (0 <= get_factory_record_val(cp, size, (uchar *)"USBD1",
+					(uchar *)"vid", buf,
+					MAX_STRING_LENGTH)) {
+		factory_dat.usb_vendor_id = simple_strtoul((char *)buf,
+							   NULL, 16);
+	}
+
+	if (0 <= get_factory_record_val(cp, size, (uchar *)"USBD1",
+					(uchar *)"pid", buf,
+					MAX_STRING_LENGTH)) {
+		factory_dat.usb_product_id = simple_strtoul((char *)buf,
+							    NULL, 16);
+	}
+	printf("DFU USB: VID = 0x%4x, PID = 0x%4x\n", factory_dat.usb_vendor_id,
+	       factory_dat.usb_product_id);
+#endif
+	if (0 <= get_factory_record_val(cp, size, (uchar *)"DEV",
+					(uchar *)"id", buf,
+					MAX_STRING_LENGTH)) {
+		if (strncmp((const char *)buf, "PXM50", 5) == 0)
+			factory_dat.pxm50 = 1;
+		else
+			factory_dat.pxm50 = 0;
+	}
+	debug("PXM50: %d\n", factory_dat.pxm50);
+#if defined(CONFIG_VIDEO)
+	if (0 <= get_factory_record_val(cp, size, (uchar *)"DISP1",
+					(uchar *)"name", factory_dat.disp_name,
+					MAX_STRING_LENGTH)) {
+		debug("display name: %s\n", factory_dat.disp_name);
+	}
+
+#endif
+	return 0;
+
+err:
+	printf("Could not read the EEPROM; something fundamentally wrong on the I2C bus.\n");
+	return 1;
+}
+
+static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
+
+static int factoryset_mac_setenv(void)
+{
+	uint8_t mac_addr[6];
+
+	debug("FactorySet: Set mac address\n");
+	if (is_valid_ether_addr(factory_dat.mac)) {
+		memcpy(mac_addr, factory_dat.mac, 6);
+	} else {
+		uint32_t mac_hi, mac_lo;
+
+		debug("Warning: FactorySet: <ethaddr> not set. Fallback to E-fuse\n");
+		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)) {
+			printf("Warning: ethaddr not set by FactorySet or E-fuse. Set <ethaddr> variable to overcome this.\n");
+			return -1;
+		}
+	}
+
+	eth_setenv_enetaddr("ethaddr", mac_addr);
+	return 0;
+}
+
+int factoryset_setenv(void)
+{
+	int ret = 0;
+
+	if (factoryset_mac_setenv() < 0)
+		ret = -1;
+
+	return ret;
+}
+
+int g_dnl_bind_fixup(struct usb_device_descriptor *dev)
+{
+	put_unaligned(factory_dat.usb_vendor_id, &dev->idVendor);
+	put_unaligned(factory_dat.usb_product_id, &dev->idProduct);
+	return 0;
+}
+#endif /* defined(CONFIG_SPL_BUILD) */
diff --git a/board/siemens/common/factoryset.h b/board/siemens/common/factoryset.h
new file mode 100644
index 0000000..445f384
--- /dev/null
+++ b/board/siemens/common/factoryset.h
@@ -0,0 +1,27 @@
+/*
+ * Common board functions for siemens AM335X based boards
+ * (C) Copyright 2013 Siemens Schweiz AG
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __FACTORYSET_H
+#define __FACTORYSET_H
+
+#define MAX_STRING_LENGTH	32
+
+struct factorysetcontainer {
+	uchar mac[6];
+	int usb_vendor_id;
+	int usb_product_id;
+	int pxm50;
+#if defined(CONFIG_VIDEO)
+	unsigned char disp_name[MAX_STRING_LENGTH];
+#endif
+};
+
+int factoryset_read_eeprom(int i2c_addr);
+int factoryset_setenv(void);
+extern struct factorysetcontainer factory_dat;
+
+#endif /* __FACTORYSET_H */