am33xx: move ti i2c baseboard header handling to board/ti/am335x/

The i2c header is specific to ti(-derived) boards, and not generic for all
am335x boards.

Signed-off-by: Peter Korsgaard <peter.korsgaard@barco.com>
[trini: Make re-apply with rtc32k_enable() applied]
Signed-off-by: Tom Rini <trini@ti.com>

6 files changed, 350 insertions, 288 deletions

diff --git a/arch/arm/cpu/armv7/am33xx/board.c b/arch/arm/cpu/armv7/am33xx/board.c
index 0b8b76d1f..8280b3550 100644
--- a/arch/arm/cpu/armv7/am33xx/board.c
+++ b/arch/arm/cpu/armv7/am33xx/board.c
@@ -36,11 +36,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-static struct wd_timer *wdtimer = (struct wd_timer *)WDT_BASE;
-#ifdef CONFIG_SPL_BUILD
-static struct uart_sys *uart_base = (struct uart_sys *)DEFAULT_UART_BASE;
-#endif
-
 static const struct gpio_bank gpio_bank_am33xx[4] = {
 	{ (void *)AM33XX_GPIO0_BASE, METHOD_GPIO_24XX },
 	{ (void *)AM33XX_GPIO1_BASE, METHOD_GPIO_24XX },
@@ -50,172 +45,6 @@ static const struct gpio_bank gpio_bank_am33xx[4] = {
 
 const struct gpio_bank *const omap_gpio_bank = gpio_bank_am33xx;
 
-/* MII mode defines */
-#define MII_MODE_ENABLE		0x0
-#define RGMII_MODE_ENABLE	0xA
-
-/* GPIO that controls power to DDR on EVM-SK */
-#define GPIO_DDR_VTT_EN		7
-
-static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
-
-static struct am335x_baseboard_id __attribute__((section (".data"))) header;
-
-static inline int board_is_bone(void)
-{
-	return !strncmp(header.name, "A335BONE", HDR_NAME_LEN);
-}
-
-static inline int board_is_bone_lt(void)
-{
-	return !strncmp(header.name, "A335BNLT", HDR_NAME_LEN);
-}
-
-static inline int board_is_evm_sk(void)
-{
-	return !strncmp("A335X_SK", header.name, HDR_NAME_LEN);
-}
-
-/*
- * 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)) {
-		puts("Could not probe the EEPROM; something fundamentally "
-			"wrong on the I2C bus.\n");
-		return -ENODEV;
-	}
-
-	/* read the eeprom using i2c */
-	if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, 2, (uchar *)&header,
-							sizeof(header))) {
-		puts("Could not read the EEPROM; something fundamentally"
-			" wrong on the I2C bus.\n");
-		return -EIO;
-	}
-
-	if (header.magic != 0xEE3355AA) {
-		/*
-		 * read the eeprom using i2c again,
-		 * but use only a 1 byte address
-		 */
-		if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, 1,
-					(uchar *)&header, sizeof(header))) {
-			puts("Could not read the EEPROM; something "
-				"fundamentally wrong on the I2C bus.\n");
-			return -EIO;
-		}
-
-		if (header.magic != 0xEE3355AA) {
-			printf("Incorrect magic number (0x%x) in EEPROM\n",
-					header.magic);
-			return -EINVAL;
-		}
-	}
-
-	return 0;
-}
-
-#ifdef CONFIG_SPL_BUILD
-/* UART Defines */
-#define UART_RESET		(0x1 << 1)
-#define UART_CLK_RUNNING_MASK	0x1
-#define UART_SMART_IDLE_EN	(0x1 << 0x3)
-
-static void rtc32k_enable(void)
-{
-	struct rtc_regs *rtc = (struct rtc_regs *)AM335X_RTC_BASE;
-
-	/*
-	 * Unlock the RTC's registers.  For more details please see the
-	 * RTC_SS section of the TRM.  In order to unlock we need to
-	 * write these specific values (keys) in this order.
-	 */
-	writel(0x83e70b13, &rtc->kick0r);
-	writel(0x95a4f1e0, &rtc->kick1r);
-
-	/* Enable the RTC 32K OSC by setting bits 3 and 6. */
-	writel((1 << 3) | (1 << 6), &rtc->osc);
-}
-#endif
-
-/*
- * Determine what type of DDR we have.
- */
-static short inline board_memory_type(void)
-{
-	/* The following boards are known to use DDR3. */
-	if (board_is_evm_sk() || board_is_bone_lt())
-		return EMIF_REG_SDRAM_TYPE_DDR3;
-
-	return EMIF_REG_SDRAM_TYPE_DDR2;
-}
-
-/*
- * early system init of muxing and clocks.
- */
-void s_init(void)
-{
-	/* WDT1 is already running when the bootloader gets control
-	 * Disable it to avoid "random" resets
-	 */
-	writel(0xAAAA, &wdtimer->wdtwspr);
-	while (readl(&wdtimer->wdtwwps) != 0x0)
-		;
-	writel(0x5555, &wdtimer->wdtwspr);
-	while (readl(&wdtimer->wdtwwps) != 0x0)
-		;
-
-#ifdef CONFIG_SPL_BUILD
-	/* Setup the PLLs and the clocks for the peripherals */
-	pll_init();
-
-	/* Enable RTC32K clock */
-	rtc32k_enable();
-
-	/* UART softreset */
-	u32 regVal;
-
-	enable_uart0_pin_mux();
-
-	regVal = readl(&uart_base->uartsyscfg);
-	regVal |= UART_RESET;
-	writel(regVal, &uart_base->uartsyscfg);
-	while ((readl(&uart_base->uartsyssts) &
-		UART_CLK_RUNNING_MASK) != UART_CLK_RUNNING_MASK)
-		;
-
-	/* Disable smart idle */
-	regVal = readl(&uart_base->uartsyscfg);
-	regVal |= UART_SMART_IDLE_EN;
-	writel(regVal, &uart_base->uartsyscfg);
-
-	gd = &gdata;
-
-	preloader_console_init();
-
-	/* 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(&header);
-	if (board_is_evm_sk()) {
-		/*
-		 * EVM SK 1.2A and later use gpio0_7 to enable DDR3.
-		 * This is safe enough to do on older revs.
-		 */
-		gpio_request(GPIO_DDR_VTT_EN, "ddr_vtt_en");
-		gpio_direction_output(GPIO_DDR_VTT_EN, 1);
-	}
-
-	config_ddr(board_memory_type());
-#endif
-}
-
 #if defined(CONFIG_OMAP_HSMMC) && !defined(CONFIG_SPL_BUILD)
 int board_mmc_init(bd_t *bis)
 {
@@ -234,93 +63,3 @@ void setup_clocks_for_console(void)
 	/* Not yet implemented */
 	return;
 }
-
-/*
- * Basic board specific setup.  Pinmux has been handled already.
- */
-int board_init(void)
-{
-	i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
-	if (read_eeprom() < 0)
-		puts("Could not get board ID.\n");
-
-	gd->bd->bi_boot_params = PHYS_DRAM_1 + 0x100;
-
-	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,
-	},
-	{
-		.slave_reg_ofs	= 0x308,
-		.sliver_reg_ofs	= 0xdc0,
-		.phy_id		= 1,
-	},
-};
-
-static struct cpsw_platform_data cpsw_data = {
-	.mdio_base		= AM335X_CPSW_MDIO_BASE,
-	.cpsw_base		= AM335X_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,
-	.mac_control		= (1 << 5),
-	.control		= cpsw_control,
-	.host_port_num		= 0,
-	.version		= CPSW_CTRL_VERSION_2,
-};
-
-int board_eth_init(bd_t *bis)
-{
-	uint8_t mac_addr[6];
-	uint32_t mac_hi, mac_lo;
-
-	if (!eth_getenv_enetaddr("ethaddr", mac_addr)) {
-		debug("<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
-			return -1;
-	}
-
-	if (board_is_bone() || board_is_bone_lt()) {
-		writel(MII_MODE_ENABLE, &cdev->miisel);
-		cpsw_slaves[0].phy_if = cpsw_slaves[1].phy_if =
-				PHY_INTERFACE_MODE_MII;
-	} else {
-		writel(RGMII_MODE_ENABLE, &cdev->miisel);
-		cpsw_slaves[0].phy_if = cpsw_slaves[1].phy_if =
-				PHY_INTERFACE_MODE_RGMII;
-	}
-
-	return cpsw_register(&cpsw_data);
-}
-#endif
diff --git a/arch/arm/include/asm/arch-am33xx/sys_proto.h b/arch/arm/include/asm/arch-am33xx/sys_proto.h
index 819ea650f..9cf35e025 100644
--- a/arch/arm/include/asm/arch-am33xx/sys_proto.h
+++ b/arch/arm/include/asm/arch-am33xx/sys_proto.h
@@ -19,24 +19,6 @@
 #ifndef _SYS_PROTO_H_
 #define _SYS_PROTO_H_
 
-/*
- * AM335x parts define a system EEPROM that defines certain sub-fields.
- * We use these fields to in turn see what board we are on, and what
- * that might require us to set or not set.
- */
-#define HDR_NO_OF_MAC_ADDR	3
-#define HDR_ETH_ALEN		6
-#define HDR_NAME_LEN		8
-
-struct am335x_baseboard_id {
-	unsigned int  magic;
-	char name[HDR_NAME_LEN];
-	char version[4];
-	char serial[12];
-	char config[32];
-	char mac_addr[HDR_NO_OF_MAC_ADDR][HDR_ETH_ALEN];
-};
-
 #define BOARD_REV_ID	0x0
 
 u32 get_cpu_rev(void);
@@ -51,13 +33,4 @@ u32 get_device_type(void);
 void setup_clocks_for_console(void);
 void ddr_pll_config(unsigned int ddrpll_M);
 
-/*
- * 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_i2c0_pin_mux(void);
-void enable_board_pin_mux(struct am335x_baseboard_id *header);
 #endif
diff --git a/board/ti/am335x/Makefile b/board/ti/am335x/Makefile
index ca50eef61..67a87a1aa 100644
--- a/board/ti/am335x/Makefile
+++ b/board/ti/am335x/Makefile
@@ -22,6 +22,7 @@ ifdef CONFIG_SPL_BUILD
 COBJS	:= mux.o
 endif
 
+COBJS	+= board.o
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS))
 SOBJS	:= $(addprefix $(obj),$(SOBJS))
diff --git a/board/ti/am335x/board.c b/board/ti/am335x/board.c
new file mode 100644
index 000000000..5279d1a4a
--- /dev/null
+++ b/board/ti/am335x/board.c
@@ -0,0 +1,299 @@
+/*
+ * board.c
+ *
+ * Board functions for TI AM335X based boards
+ *
+ * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.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; 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.
+ */
+
+#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 "board.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static struct wd_timer *wdtimer = (struct wd_timer *)WDT_BASE;
+#ifdef CONFIG_SPL_BUILD
+static struct uart_sys *uart_base = (struct uart_sys *)DEFAULT_UART_BASE;
+#endif
+
+/* MII mode defines */
+#define MII_MODE_ENABLE		0x0
+#define RGMII_MODE_ENABLE	0xA
+
+/* GPIO that controls power to DDR on EVM-SK */
+#define GPIO_DDR_VTT_EN		7
+
+static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
+
+static struct am335x_baseboard_id __attribute__((section (".data"))) header;
+
+static inline int board_is_bone(void)
+{
+	return !strncmp(header.name, "A335BONE", HDR_NAME_LEN);
+}
+
+static inline int board_is_bone_lt(void)
+{
+	return !strncmp(header.name, "A335BNLT", HDR_NAME_LEN);
+}
+
+static inline int board_is_evm_sk(void)
+{
+	return !strncmp("A335X_SK", header.name, HDR_NAME_LEN);
+}
+
+/*
+ * 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)) {
+		puts("Could not probe the EEPROM; something fundamentally "
+			"wrong on the I2C bus.\n");
+		return -ENODEV;
+	}
+
+	/* read the eeprom using i2c */
+	if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, 2, (uchar *)&header,
+							sizeof(header))) {
+		puts("Could not read the EEPROM; something fundamentally"
+			" wrong on the I2C bus.\n");
+		return -EIO;
+	}
+
+	if (header.magic != 0xEE3355AA) {
+		/*
+		 * read the eeprom using i2c again,
+		 * but use only a 1 byte address
+		 */
+		if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, 1,
+					(uchar *)&header, sizeof(header))) {
+			puts("Could not read the EEPROM; something "
+				"fundamentally wrong on the I2C bus.\n");
+			return -EIO;
+		}
+
+		if (header.magic != 0xEE3355AA) {
+			printf("Incorrect magic number (0x%x) in EEPROM\n",
+					header.magic);
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+
+/* UART Defines */
+#ifdef CONFIG_SPL_BUILD
+#define UART_RESET		(0x1 << 1)
+#define UART_CLK_RUNNING_MASK	0x1
+#define UART_SMART_IDLE_EN	(0x1 << 0x3)
+
+static void rtc32k_enable(void)
+{
+	struct rtc_regs *rtc = (struct rtc_regs *)AM335X_RTC_BASE;
+
+	/*
+	 * Unlock the RTC's registers.  For more details please see the
+	 * RTC_SS section of the TRM.  In order to unlock we need to
+	 * write these specific values (keys) in this order.
+	 */
+	writel(0x83e70b13, &rtc->kick0r);
+	writel(0x95a4f1e0, &rtc->kick1r);
+
+	/* Enable the RTC 32K OSC by setting bits 3 and 6. */
+	writel((1 << 3) | (1 << 6), &rtc->osc);
+}
+#endif
+
+/*
+ * Determine what type of DDR we have.
+ */
+static short inline board_memory_type(void)
+{
+	/* The following boards are known to use DDR3. */
+	if (board_is_evm_sk() || board_is_bone_lt())
+		return EMIF_REG_SDRAM_TYPE_DDR3;
+
+	return EMIF_REG_SDRAM_TYPE_DDR2;
+}
+
+/*
+ * early system init of muxing and clocks.
+ */
+void s_init(void)
+{
+	/* WDT1 is already running when the bootloader gets control
+	 * Disable it to avoid "random" resets
+	 */
+	writel(0xAAAA, &wdtimer->wdtwspr);
+	while (readl(&wdtimer->wdtwwps) != 0x0)
+		;
+	writel(0x5555, &wdtimer->wdtwspr);
+	while (readl(&wdtimer->wdtwwps) != 0x0)
+		;
+
+#ifdef CONFIG_SPL_BUILD
+	/* Setup the PLLs and the clocks for the peripherals */
+	pll_init();
+
+	/* Enable RTC32K clock */
+	rtc32k_enable();
+
+	/* UART softreset */
+	u32 regVal;
+
+	enable_uart0_pin_mux();
+
+	regVal = readl(&uart_base->uartsyscfg);
+	regVal |= UART_RESET;
+	writel(regVal, &uart_base->uartsyscfg);
+	while ((readl(&uart_base->uartsyssts) &
+		UART_CLK_RUNNING_MASK) != UART_CLK_RUNNING_MASK)
+		;
+
+	/* Disable smart idle */
+	regVal = readl(&uart_base->uartsyscfg);
+	regVal |= UART_SMART_IDLE_EN;
+	writel(regVal, &uart_base->uartsyscfg);
+
+	gd = &gdata;
+
+	preloader_console_init();
+
+	/* 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(&header);
+	if (board_is_evm_sk()) {
+		/*
+		 * EVM SK 1.2A and later use gpio0_7 to enable DDR3.
+		 * This is safe enough to do on older revs.
+		 */
+		gpio_request(GPIO_DDR_VTT_EN, "ddr_vtt_en");
+		gpio_direction_output(GPIO_DDR_VTT_EN, 1);
+	}
+
+	config_ddr(board_memory_type());
+#endif
+}
+
+/*
+ * Basic board specific setup.  Pinmux has been handled already.
+ */
+int board_init(void)
+{
+	i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
+	if (read_eeprom() < 0)
+		puts("Could not get board ID.\n");
+
+	gd->bd->bi_boot_params = PHYS_DRAM_1 + 0x100;
+
+	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,
+	},
+	{
+		.slave_reg_ofs	= 0x308,
+		.sliver_reg_ofs	= 0xdc0,
+		.phy_id		= 1,
+	},
+};
+
+static struct cpsw_platform_data cpsw_data = {
+	.mdio_base		= AM335X_CPSW_MDIO_BASE,
+	.cpsw_base		= AM335X_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,
+	.mac_control		= (1 << 5),
+	.control		= cpsw_control,
+	.host_port_num		= 0,
+	.version		= CPSW_CTRL_VERSION_2,
+};
+
+int board_eth_init(bd_t *bis)
+{
+	uint8_t mac_addr[6];
+	uint32_t mac_hi, mac_lo;
+
+	if (!eth_getenv_enetaddr("ethaddr", mac_addr)) {
+		debug("<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
+			return -1;
+	}
+
+	if (board_is_bone() || board_is_bone_lt()) {
+		writel(MII_MODE_ENABLE, &cdev->miisel);
+		cpsw_slaves[0].phy_if = cpsw_slaves[1].phy_if =
+				PHY_INTERFACE_MODE_MII;
+	} else {
+		writel(RGMII_MODE_ENABLE, &cdev->miisel);
+		cpsw_slaves[0].phy_if = cpsw_slaves[1].phy_if =
+				PHY_INTERFACE_MODE_RGMII;
+	}
+
+	return cpsw_register(&cpsw_data);
+}
+#endif
diff --git a/board/ti/am335x/board.h b/board/ti/am335x/board.h
new file mode 100644
index 000000000..7985ab2c1
--- /dev/null
+++ b/board/ti/am335x/board.h
@@ -0,0 +1,49 @@
+/*
+ * board.h
+ *
+ * TI AM335x boards information header
+ *
+ * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.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; 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.
+ */
+
+#ifndef _BOARD_H_
+#define _BOARD_H_
+
+/*
+ * TI AM335x parts define a system EEPROM that defines certain sub-fields.
+ * We use these fields to in turn see what board we are on, and what
+ * that might require us to set or not set.
+ */
+#define HDR_NO_OF_MAC_ADDR	3
+#define HDR_ETH_ALEN		6
+#define HDR_NAME_LEN		8
+
+struct am335x_baseboard_id {
+	unsigned int  magic;
+	char name[HDR_NAME_LEN];
+	char version[4];
+	char serial[12];
+	char config[32];
+	char mac_addr[HDR_NO_OF_MAC_ADDR][HDR_ETH_ALEN];
+};
+
+/*
+ * 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_i2c0_pin_mux(void);
+void enable_board_pin_mux(struct am335x_baseboard_id *header);
+#endif
diff --git a/board/ti/am335x/mux.c b/board/ti/am335x/mux.c
index 80becd5c7..82bb9fd3b 100644
--- a/board/ti/am335x/mux.c
+++ b/board/ti/am335x/mux.c
@@ -18,6 +18,7 @@
 #include <asm/arch/hardware.h>
 #include <asm/io.h>
 #include <i2c.h>
+#include "board.h"
 
 #define MUX_CFG(value, offset)	\
 	__raw_writel(value, (CTRL_BASE + offset));