Blackfin arch: add support for Blackfin latest processor family BF51x

Signed-off-by: Bryan Wu <cooloney@kernel.org>

3 files changed, 630 insertions, 0 deletions

diff --git a/arch/blackfin/mach-bf518/boards/Kconfig b/arch/blackfin/mach-bf518/boards/Kconfig
new file mode 100644
index 000000000000..96163514ed22
--- /dev/null
+++ b/arch/blackfin/mach-bf518/boards/Kconfig
@@ -0,0 +1,12 @@
+choice
+        prompt "System type"
+        default BFIN518F_EZBRD
+        help
+          Select your board!
+
+config BFIN518F_EZBRD
+        bool "BF518F-EZBRD"
+        help
+          BF518-EZBRD board support.
+
+endchoice
diff --git a/arch/blackfin/mach-bf518/boards/Makefile b/arch/blackfin/mach-bf518/boards/Makefile
new file mode 100644
index 000000000000..172e859c3a7f
--- /dev/null
+++ b/arch/blackfin/mach-bf518/boards/Makefile
@@ -0,0 +1,5 @@
+#
+# arch/blackfin/mach-bf518/boards/Makefile
+#
+
+obj-$(CONFIG_BFIN518F_EZBRD)            += ezbrd.o
diff --git a/arch/blackfin/mach-bf518/boards/ezbrd.c b/arch/blackfin/mach-bf518/boards/ezbrd.c
new file mode 100644
index 000000000000..65bc602b5c99
--- /dev/null
+++ b/arch/blackfin/mach-bf518/boards/ezbrd.c
@@ -0,0 +1,613 @@
+/*
+ * File:         arch/blackfin/mach-bf518/boards/ezbrd.c
+ * Based on:     arch/blackfin/mach-bf527/boards/ezbrd.c
+ * Author:       Bryan Wu <cooloney@kernel.org>
+ *
+ * Created:
+ * Description:
+ *
+ * Modified:
+ *               Copyright 2005 National ICT Australia (NICTA)
+ *               Copyright 2004-2008 Analog Devices Inc.
+ *
+ * Bugs:         Enter bugs at http://blackfin.uclinux.org/
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/physmap.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/flash.h>
+
+#include <linux/i2c.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <asm/dma.h>
+#include <asm/bfin5xx_spi.h>
+#include <asm/reboot.h>
+#include <asm/portmux.h>
+#include <asm/dpmc.h>
+#include <linux/spi/ad7877.h>
+
+/*
+ * Name the Board for the /proc/cpuinfo
+ */
+const char bfin_board_name[] = "BF518F-EZBRD";
+
+/*
+ *  Driver needs to know address, irq and flag pin.
+ */
+
+#if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
+static struct mtd_partition ezbrd_partitions[] = {
+        {
+                .name       = "bootloader(nor)",
+                .size       = 0x40000,
+                .offset     = 0,
+        }, {
+                .name       = "linux kernel(nor)",
+                .size       = 0x1C0000,
+                .offset     = MTDPART_OFS_APPEND,
+        }, {
+                .name       = "file system(nor)",
+                .size       = MTDPART_SIZ_FULL,
+                .offset     = MTDPART_OFS_APPEND,
+        }
+};
+
+static struct physmap_flash_data ezbrd_flash_data = {
+        .width      = 2,
+        .parts      = ezbrd_partitions,
+        .nr_parts   = ARRAY_SIZE(ezbrd_partitions),
+};
+
+static struct resource ezbrd_flash_resource = {
+        .start = 0x20000000,
+        .end   = 0x203fffff,
+        .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device ezbrd_flash_device = {
+        .name          = "physmap-flash",
+        .id            = 0,
+        .dev = {
+                .platform_data = &ezbrd_flash_data,
+        },
+        .num_resources = 1,
+        .resource      = &ezbrd_flash_resource,
+};
+#endif
+
+#if defined(CONFIG_RTC_DRV_BFIN) || defined(CONFIG_RTC_DRV_BFIN_MODULE)
+static struct platform_device rtc_device = {
+        .name = "rtc-bfin",
+        .id   = -1,
+};
+#endif
+
+#if defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE)
+static struct platform_device bfin_mac_device = {
+        .name = "bfin_mac",
+};
+#endif
+
+#if defined(CONFIG_MTD_M25P80) \
+        || defined(CONFIG_MTD_M25P80_MODULE)
+static struct mtd_partition bfin_spi_flash_partitions[] = {
+        {
+                .name = "bootloader(spi)",
+                .size = 0x00040000,
+                .offset = 0,
+                .mask_flags = MTD_CAP_ROM
+        }, {
+                .name = "linux kernel(spi)",
+                .size = MTDPART_SIZ_FULL,
+                .offset = MTDPART_OFS_APPEND,
+        }
+};
+
+static struct flash_platform_data bfin_spi_flash_data = {
+        .name = "m25p80",
+        .parts = bfin_spi_flash_partitions,
+        .nr_parts = ARRAY_SIZE(bfin_spi_flash_partitions),
+        .type = "m25p16",
+};
+
+/* SPI flash chip (m25p64) */
+static struct bfin5xx_spi_chip spi_flash_chip_info = {
+        .enable_dma = 0,         /* use dma transfer with this chip*/
+        .bits_per_word = 8,
+};
+#endif
+
+#if defined(CONFIG_SPI_ADC_BF533) \
+        || defined(CONFIG_SPI_ADC_BF533_MODULE)
+/* SPI ADC chip */
+static struct bfin5xx_spi_chip spi_adc_chip_info = {
+        .enable_dma = 1,         /* use dma transfer with this chip*/
+        .bits_per_word = 16,
+};
+#endif
+
+#if defined(CONFIG_SPI_MMC) || defined(CONFIG_SPI_MMC_MODULE)
+static struct bfin5xx_spi_chip spi_mmc_chip_info = {
+        .enable_dma = 1,
+        .bits_per_word = 8,
+};
+#endif
+
+#if defined(CONFIG_PBX)
+static struct bfin5xx_spi_chip spi_si3xxx_chip_info = {
+        .ctl_reg        = 0x4, /* send zero */
+        .enable_dma     = 0,
+        .bits_per_word  = 8,
+        .cs_change_per_word = 1,
+};
+#endif
+
+#if defined(CONFIG_TOUCHSCREEN_AD7877) || defined(CONFIG_TOUCHSCREEN_AD7877_MODULE)
+static struct bfin5xx_spi_chip spi_ad7877_chip_info = {
+        .enable_dma = 0,
+        .bits_per_word = 16,
+};
+
+static const struct ad7877_platform_data bfin_ad7877_ts_info = {
+        .model                  = 7877,
+        .vref_delay_usecs       = 50,   /* internal, no capacitor */
+        .x_plate_ohms           = 419,
+        .y_plate_ohms           = 486,
+        .pressure_max           = 1000,
+        .pressure_min           = 0,
+        .stopacq_polarity       = 1,
+        .first_conversion_delay = 3,
+        .acquisition_time       = 1,
+        .averaging              = 1,
+        .pen_down_acc_interval  = 1,
+};
+#endif
+
+#if defined(CONFIG_SND_SOC_WM8731) || defined(CONFIG_SND_SOC_WM8731_MODULE) \
+         && defined(CONFIG_SND_SOC_WM8731_SPI)
+static struct bfin5xx_spi_chip spi_wm8731_chip_info = {
+        .enable_dma = 0,
+        .bits_per_word = 16,
+};
+#endif
+
+#if defined(CONFIG_SPI_SPIDEV) || defined(CONFIG_SPI_SPIDEV_MODULE)
+static struct bfin5xx_spi_chip spidev_chip_info = {
+        .enable_dma = 0,
+        .bits_per_word = 8,
+};
+#endif
+
+static struct spi_board_info bfin_spi_board_info[] __initdata = {
+#if defined(CONFIG_MTD_M25P80) \
+        || defined(CONFIG_MTD_M25P80_MODULE)
+        {
+                /* the modalias must be the same as spi device driver name */
+                .modalias = "m25p80", /* Name of spi_driver for this device */
+                .max_speed_hz = 25000000,     /* max spi clock (SCK) speed in HZ */
+                .bus_num = 0, /* Framework bus number */
+                .chip_select = 1, /* Framework chip select. On STAMP537 it is SPISSEL1*/
+                .platform_data = &bfin_spi_flash_data,
+                .controller_data = &spi_flash_chip_info,
+                .mode = SPI_MODE_3,
+        },
+#endif
+
+#if defined(CONFIG_SPI_ADC_BF533) \
+        || defined(CONFIG_SPI_ADC_BF533_MODULE)
+        {
+                .modalias = "bfin_spi_adc", /* Name of spi_driver for this device */
+                .max_speed_hz = 6250000,     /* max spi clock (SCK) speed in HZ */
+                .bus_num = 0, /* Framework bus number */
+                .chip_select = 1, /* Framework chip select. */
+                .platform_data = NULL, /* No spi_driver specific config */
+                .controller_data = &spi_adc_chip_info,
+        },
+#endif
+
+#if defined(CONFIG_SPI_MMC) || defined(CONFIG_SPI_MMC_MODULE)
+        {
+                .modalias = "spi_mmc_dummy",
+                .max_speed_hz = 25000000,     /* max spi clock (SCK) speed in HZ */
+                .bus_num = 0,
+                .chip_select = 0,
+                .platform_data = NULL,
+                .controller_data = &spi_mmc_chip_info,
+                .mode = SPI_MODE_3,
+        },
+        {
+                .modalias = "spi_mmc",
+                .max_speed_hz = 25000000,     /* max spi clock (SCK) speed in HZ */
+                .bus_num = 0,
+                .chip_select = CONFIG_SPI_MMC_CS_CHAN,
+                .platform_data = NULL,
+                .controller_data = &spi_mmc_chip_info,
+                .mode = SPI_MODE_3,
+        },
+#endif
+#if defined(CONFIG_PBX)
+        {
+                .modalias = "fxs-spi",
+                .max_speed_hz = 12500000,     /* max spi clock (SCK) speed in HZ */
+                .bus_num = 0,
+                .chip_select = 8 - CONFIG_J11_JUMPER,
+                .controller_data = &spi_si3xxx_chip_info,
+                .mode = SPI_MODE_3,
+        },
+        {
+                .modalias = "fxo-spi",
+                .max_speed_hz = 12500000,     /* max spi clock (SCK) speed in HZ */
+                .bus_num = 0,
+                .chip_select = 8 - CONFIG_J19_JUMPER,
+                .controller_data = &spi_si3xxx_chip_info,
+                .mode = SPI_MODE_3,
+        },
+#endif
+#if defined(CONFIG_TOUCHSCREEN_AD7877) || defined(CONFIG_TOUCHSCREEN_AD7877_MODULE)
+        {
+                .modalias               = "ad7877",
+                .platform_data          = &bfin_ad7877_ts_info,
+                .irq                    = IRQ_PF8,
+                .max_speed_hz   = 12500000,     /* max spi clock (SCK) speed in HZ */
+                .bus_num        = 0,
+                .chip_select  = 2,
+                .controller_data = &spi_ad7877_chip_info,
+        },
+#endif
+#if defined(CONFIG_SND_SOC_WM8731) || defined(CONFIG_SND_SOC_WM8731_MODULE) \
+         && defined(CONFIG_SND_SOC_WM8731_SPI)
+        {
+                .modalias       = "wm8731",
+                .max_speed_hz   = 3125000,     /* max spi clock (SCK) speed in HZ */
+                .bus_num        = 0,
+                .chip_select    = 5,
+                .controller_data = &spi_wm8731_chip_info,
+                .mode = SPI_MODE_0,
+        },
+#endif
+#if defined(CONFIG_SPI_SPIDEV) || defined(CONFIG_SPI_SPIDEV_MODULE)
+        {
+                .modalias = "spidev",
+                .max_speed_hz = 3125000,     /* max spi clock (SCK) speed in HZ */
+                .bus_num = 0,
+                .chip_select = 1,
+                .controller_data = &spidev_chip_info,
+        },
+#endif
+#if defined(CONFIG_FB_BFIN_LQ035Q1) || defined(CONFIG_FB_BFIN_LQ035Q1_MODULE)
+        {
+                .modalias = "bfin-lq035q1-spi",
+                .max_speed_hz = 20000000,     /* max spi clock (SCK) speed in HZ */
+                .bus_num = 0,
+                .chip_select = 1,
+                .controller_data = &lq035q1_spi_chip_info,
+                .mode = SPI_CPHA | SPI_CPOL,
+        },
+#endif
+};
+
+/* SPI controller data */
+#if defined(CONFIG_SPI_BFIN) || defined(CONFIG_SPI_BFIN_MODULE)
+/* SPI (0) */
+static struct bfin5xx_spi_master bfin_spi0_info = {
+        .num_chipselect = 5,
+        .enable_dma = 1,  /* master has the ability to do dma transfer */
+        .pin_req = {P_SPI0_SCK, P_SPI0_MISO, P_SPI0_MOSI, 0},
+};
+
+static struct resource bfin_spi0_resource[] = {
+        [0] = {
+                .start = SPI0_REGBASE,
+                .end   = SPI0_REGBASE + 0xFF,
+                .flags = IORESOURCE_MEM,
+                },
+        [1] = {
+                .start = CH_SPI0,
+                .end   = CH_SPI0,
+                .flags = IORESOURCE_IRQ,
+        },
+};
+
+static struct platform_device bfin_spi0_device = {
+        .name = "bfin-spi",
+        .id = 0, /* Bus number */
+        .num_resources = ARRAY_SIZE(bfin_spi0_resource),
+        .resource = bfin_spi0_resource,
+        .dev = {
+                .platform_data = &bfin_spi0_info, /* Passed to driver */
+        },
+};
+
+/* SPI (1) */
+static struct bfin5xx_spi_master bfin_spi1_info = {
+        .num_chipselect = 5,
+        .enable_dma = 1,  /* master has the ability to do dma transfer */
+        .pin_req = {P_SPI1_SCK, P_SPI1_MISO, P_SPI1_MOSI, 0},
+};
+
+static struct resource bfin_spi1_resource[] = {
+        [0] = {
+                .start = SPI1_REGBASE,
+                .end   = SPI1_REGBASE + 0xFF,
+                .flags = IORESOURCE_MEM,
+                },
+        [1] = {
+                .start = CH_SPI1,
+                .end   = CH_SPI1,
+                .flags = IORESOURCE_IRQ,
+        },
+};
+
+static struct platform_device bfin_spi1_device = {
+        .name = "bfin-spi",
+        .id = 1, /* Bus number */
+        .num_resources = ARRAY_SIZE(bfin_spi1_resource),
+        .resource = bfin_spi1_resource,
+        .dev = {
+                .platform_data = &bfin_spi1_info, /* Passed to driver */
+        },
+};
+#endif  /* spi master and devices */
+
+#if defined(CONFIG_SERIAL_BFIN) || defined(CONFIG_SERIAL_BFIN_MODULE)
+static struct resource bfin_uart_resources[] = {
+#ifdef CONFIG_SERIAL_BFIN_UART0
+        {
+                .start = 0xFFC00400,
+                .end = 0xFFC004FF,
+                .flags = IORESOURCE_MEM,
+        },
+#endif
+#ifdef CONFIG_SERIAL_BFIN_UART1
+        {
+                .start = 0xFFC02000,
+                .end = 0xFFC020FF,
+                .flags = IORESOURCE_MEM,
+        },
+#endif
+};
+
+static struct platform_device bfin_uart_device = {
+        .name = "bfin-uart",
+        .id = 1,
+        .num_resources = ARRAY_SIZE(bfin_uart_resources),
+        .resource = bfin_uart_resources,
+};
+#endif
+
+#if defined(CONFIG_BFIN_SIR) || defined(CONFIG_BFIN_SIR_MODULE)
+static struct resource bfin_sir_resources[] = {
+#ifdef CONFIG_BFIN_SIR0
+        {
+                .start = 0xFFC00400,
+                .end = 0xFFC004FF,
+                .flags = IORESOURCE_MEM,
+        },
+#endif
+#ifdef CONFIG_BFIN_SIR1
+        {
+                .start = 0xFFC02000,
+                .end = 0xFFC020FF,
+                .flags = IORESOURCE_MEM,
+        },
+#endif
+};
+
+static struct platform_device bfin_sir_device = {
+        .name = "bfin_sir",
+        .id = 0,
+        .num_resources = ARRAY_SIZE(bfin_sir_resources),
+        .resource = bfin_sir_resources,
+};
+#endif
+
+#if defined(CONFIG_I2C_BLACKFIN_TWI) || defined(CONFIG_I2C_BLACKFIN_TWI_MODULE)
+static struct resource bfin_twi0_resource[] = {
+        [0] = {
+                .start = TWI0_REGBASE,
+                .end   = TWI0_REGBASE,
+                .flags = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start = IRQ_TWI,
+                .end   = IRQ_TWI,
+                .flags = IORESOURCE_IRQ,
+        },
+};
+
+static struct platform_device i2c_bfin_twi_device = {
+        .name = "i2c-bfin-twi",
+        .id = 0,
+        .num_resources = ARRAY_SIZE(bfin_twi0_resource),
+        .resource = bfin_twi0_resource,
+};
+#endif
+
+#ifdef CONFIG_I2C_BOARDINFO
+static struct i2c_board_info __initdata bfin_i2c_board_info[] = {
+#if defined(CONFIG_TWI_LCD) || defined(CONFIG_TWI_LCD_MODULE)
+        {
+                I2C_BOARD_INFO("pcf8574_lcd", 0x22),
+        },
+#endif
+#if defined(CONFIG_TWI_KEYPAD) || defined(CONFIG_TWI_KEYPAD_MODULE)
+        {
+                I2C_BOARD_INFO("pcf8574_keypad", 0x27),
+                .irq = IRQ_PF8,
+        },
+#endif
+};
+#endif
+
+#if defined(CONFIG_SERIAL_BFIN_SPORT) || defined(CONFIG_SERIAL_BFIN_SPORT_MODULE)
+static struct platform_device bfin_sport0_uart_device = {
+        .name = "bfin-sport-uart",
+        .id = 0,
+};
+
+static struct platform_device bfin_sport1_uart_device = {
+        .name = "bfin-sport-uart",
+        .id = 1,
+};
+#endif
+
+#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
+#include <linux/input.h>
+#include <linux/gpio_keys.h>
+
+static struct gpio_keys_button bfin_gpio_keys_table[] = {
+        {BTN_0, GPIO_PG0, 1, "gpio-keys: BTN0"},
+        {BTN_1, GPIO_PG13, 1, "gpio-keys: BTN1"},
+};
+
+static struct gpio_keys_platform_data bfin_gpio_keys_data = {
+        .buttons        = bfin_gpio_keys_table,
+        .nbuttons       = ARRAY_SIZE(bfin_gpio_keys_table),
+};
+
+static struct platform_device bfin_device_gpiokeys = {
+        .name      = "gpio-keys",
+        .dev = {
+                .platform_data = &bfin_gpio_keys_data,
+        },
+};
+#endif
+
+static struct resource bfin_gpios_resources = {
+        .start = 0,
+        .end   = MAX_BLACKFIN_GPIOS - 1,
+        .flags = IORESOURCE_IRQ,
+};
+
+static struct platform_device bfin_gpios_device = {
+        .name = "simple-gpio",
+        .id = -1,
+        .num_resources = 1,
+        .resource = &bfin_gpios_resources,
+};
+
+static const unsigned int cclk_vlev_datasheet[] =
+{
+        VRPAIR(VLEV_100, 400000000),
+        VRPAIR(VLEV_105, 426000000),
+        VRPAIR(VLEV_110, 500000000),
+        VRPAIR(VLEV_115, 533000000),
+        VRPAIR(VLEV_120, 600000000),
+};
+
+static struct bfin_dpmc_platform_data bfin_dmpc_vreg_data = {
+        .tuple_tab = cclk_vlev_datasheet,
+        .tabsize = ARRAY_SIZE(cclk_vlev_datasheet),
+        .vr_settling_time = 25 /* us */,
+};
+
+static struct platform_device bfin_dpmc = {
+        .name = "bfin dpmc",
+        .dev = {
+                .platform_data = &bfin_dmpc_vreg_data,
+        },
+};
+
+static struct platform_device *stamp_devices[] __initdata = {
+
+        &bfin_dpmc,
+
+#if defined(CONFIG_RTC_DRV_BFIN) || defined(CONFIG_RTC_DRV_BFIN_MODULE)
+        &rtc_device,
+#endif
+
+#if defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE)
+        &bfin_mac_device,
+#endif
+
+#if defined(CONFIG_SPI_BFIN) || defined(CONFIG_SPI_BFIN_MODULE)
+        &bfin_spi0_device,
+        &bfin_spi1_device,
+#endif
+
+#if defined(CONFIG_SERIAL_BFIN) || defined(CONFIG_SERIAL_BFIN_MODULE)
+        &bfin_uart_device,
+#endif
+
+#if defined(CONFIG_BFIN_SIR) || defined(CONFIG_BFIN_SIR_MODULE)
+        &bfin_sir_device,
+#endif
+
+#if defined(CONFIG_I2C_BLACKFIN_TWI) || defined(CONFIG_I2C_BLACKFIN_TWI_MODULE)
+        &i2c_bfin_twi_device,
+#endif
+
+#if defined(CONFIG_SERIAL_BFIN_SPORT) || defined(CONFIG_SERIAL_BFIN_SPORT_MODULE)
+        &bfin_sport0_uart_device,
+        &bfin_sport1_uart_device,
+#endif
+
+#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
+        &bfin_device_gpiokeys,
+#endif
+
+#if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
+        &ezbrd_flash_device,
+#endif
+
+        &bfin_gpios_device,
+};
+
+static int __init ezbrd_init(void)
+{
+        printk(KERN_INFO "%s(): registering device resources\n", __func__);
+
+#ifdef CONFIG_I2C_BOARDINFO
+        i2c_register_board_info(0, bfin_i2c_board_info,
+                                ARRAY_SIZE(bfin_i2c_board_info));
+#endif
+
+        platform_add_devices(stamp_devices, ARRAY_SIZE(stamp_devices));
+        spi_register_board_info(bfin_spi_board_info, ARRAY_SIZE(bfin_spi_board_info));
+        return 0;
+}
+
+arch_initcall(ezbrd_init);
+
+void native_machine_restart(char *cmd)
+{
+        /* workaround reboot hang when booting from SPI */
+        if ((bfin_read_SYSCR() & 0x7) == 0x3)
+                bfin_gpio_reset_spi0_ssel1();
+}
+
+void bfin_get_ether_addr(char *addr)
+{
+        /* the MAC is stored in OTP memory page 0xDF */
+        u32 ret;
+        u64 otp_mac;
+        u32 (*otp_read)(u32 page, u32 flags, u64 *page_content) = (void *)0xEF00001A;
+
+        ret = otp_read(0xDF, 0x00, &otp_mac);
+        if (!(ret & 0x1)) {
+                char *otp_mac_p = (char *)&otp_mac;
+                for (ret = 0; ret < 6; ++ret)
+                        addr[ret] = otp_mac_p[5 - ret];
+        }
+}
+EXPORT_SYMBOL(bfin_get_ether_addr);