board/boundary/nitrogen6x/nitrogen6x.c

   1 /*
   2  * Copyright (C) 2010-2013 Freescale Semiconductor, Inc.
   3  * Copyright (C) 2013, Boundary Devices <info@boundarydevices.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <asm/io.h>
  10 #include <asm/arch/clock.h>
  11 #include <asm/arch/imx-regs.h>
  12 #include <asm/arch/iomux.h>
  13 #include <asm/arch/sys_proto.h>
  14 #include <malloc.h>
  15 #include <asm/arch/mx6-pins.h>
  16 #include <linux/errno.h>
  17 #include <asm/gpio.h>
  18 #include <asm/imx-common/iomux-v3.h>
  19 #include <asm/imx-common/mxc_i2c.h>
  20 #include <asm/imx-common/sata.h>
  21 #include <asm/imx-common/spi.h>
  22 #include <asm/imx-common/boot_mode.h>
  23 #include <asm/imx-common/video.h>
  24 #include <mmc.h>
  25 #include <fsl_esdhc.h>
  26 #include <micrel.h>
  27 #include <miiphy.h>
  28 #include <netdev.h>
  29 #include <asm/arch/crm_regs.h>
  30 #include <asm/arch/mxc_hdmi.h>
  31 #include <i2c.h>
  32 #include <input.h>
  33 #include <netdev.h>
  34 #include <usb/ehci-ci.h>
  35
  36 DECLARE_GLOBAL_DATA_PTR;
  37 #define GP_USB_OTG_PWR  IMX_GPIO_NR(3, 22)
  38
  39 #define UART_PAD_CTRL  (PAD_CTL_PUS_100K_UP |                   \
  40         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |                 \
  41         PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
  42
  43 #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP |                    \
  44         PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm |                 \
  45         PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
  46
  47 #define ENET_PAD_CTRL  (PAD_CTL_PUS_100K_UP |                   \
  48         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
  49
  50 #define SPI_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_SPEED_MED |         \
  51         PAD_CTL_DSE_40ohm     | PAD_CTL_SRE_FAST)
  52
  53 #define BUTTON_PAD_CTRL (PAD_CTL_PUS_100K_UP |                  \
  54         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
  55
  56 #define I2C_PAD_CTRL    (PAD_CTL_PUS_100K_UP |                  \
  57         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS |   \
  58         PAD_CTL_ODE | PAD_CTL_SRE_FAST)
  59
  60 #define WEAK_PULLUP     (PAD_CTL_PUS_100K_UP |                  \
  61         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS |   \
  62         PAD_CTL_SRE_SLOW)
  63
  64 #define WEAK_PULLDOWN   (PAD_CTL_PUS_100K_DOWN |                \
  65         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |                 \
  66         PAD_CTL_HYS | PAD_CTL_SRE_SLOW)
  67
  68 #define OUTPUT_40OHM (PAD_CTL_SPEED_MED|PAD_CTL_DSE_40ohm)
  69
  70 int dram_init(void)
  71 {
  72         gd->ram_size = ((ulong)CONFIG_DDR_MB * 1024 * 1024);
  73
  74         return 0;
  75 }
  76
  77 static iomux_v3_cfg_t const uart1_pads[] = {
  78         MX6_PAD_SD3_DAT6__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
  79         MX6_PAD_SD3_DAT7__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
  80 };
  81
  82 static iomux_v3_cfg_t const uart2_pads[] = {
  83         MX6_PAD_EIM_D26__UART2_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
  84         MX6_PAD_EIM_D27__UART2_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
  85 };
  86
  87 #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
  88
  89 /* I2C1, SGTL5000 */
  90 static struct i2c_pads_info i2c_pad_info0 = {
  91         .scl = {
  92                 .i2c_mode = MX6_PAD_EIM_D21__I2C1_SCL | PC,
  93                 .gpio_mode = MX6_PAD_EIM_D21__GPIO3_IO21 | PC,
  94                 .gp = IMX_GPIO_NR(3, 21)
  95         },
  96         .sda = {
  97                 .i2c_mode = MX6_PAD_EIM_D28__I2C1_SDA | PC,
  98                 .gpio_mode = MX6_PAD_EIM_D28__GPIO3_IO28 | PC,
  99                 .gp = IMX_GPIO_NR(3, 28)
 100         }
 101 };
 102
 103 /* I2C2 Camera, MIPI */
 104 static struct i2c_pads_info i2c_pad_info1 = {
 105         .scl = {
 106                 .i2c_mode = MX6_PAD_KEY_COL3__I2C2_SCL | PC,
 107                 .gpio_mode = MX6_PAD_KEY_COL3__GPIO4_IO12 | PC,
 108                 .gp = IMX_GPIO_NR(4, 12)
 109         },
 110         .sda = {
 111                 .i2c_mode = MX6_PAD_KEY_ROW3__I2C2_SDA | PC,
 112                 .gpio_mode = MX6_PAD_KEY_ROW3__GPIO4_IO13 | PC,
 113                 .gp = IMX_GPIO_NR(4, 13)
 114         }
 115 };
 116
 117 /* I2C3, J15 - RGB connector */
 118 static struct i2c_pads_info i2c_pad_info2 = {
 119         .scl = {
 120                 .i2c_mode = MX6_PAD_GPIO_5__I2C3_SCL | PC,
 121                 .gpio_mode = MX6_PAD_GPIO_5__GPIO1_IO05 | PC,
 122                 .gp = IMX_GPIO_NR(1, 5)
 123         },
 124         .sda = {
 125                 .i2c_mode = MX6_PAD_GPIO_16__I2C3_SDA | PC,
 126                 .gpio_mode = MX6_PAD_GPIO_16__GPIO7_IO11 | PC,
 127                 .gp = IMX_GPIO_NR(7, 11)
 128         }
 129 };
 130
 131 static iomux_v3_cfg_t const usdhc2_pads[] = {
 132         MX6_PAD_SD2_CLK__SD2_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 133         MX6_PAD_SD2_CMD__SD2_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 134         MX6_PAD_SD2_DAT0__SD2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 135         MX6_PAD_SD2_DAT1__SD2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 136         MX6_PAD_SD2_DAT2__SD2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 137         MX6_PAD_SD2_DAT3__SD2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 138 };
 139
 140 static iomux_v3_cfg_t const usdhc3_pads[] = {
 141         MX6_PAD_SD3_CLK__SD3_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 142         MX6_PAD_SD3_CMD__SD3_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 143         MX6_PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 144         MX6_PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 145         MX6_PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 146         MX6_PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 147         MX6_PAD_SD3_DAT5__GPIO7_IO00    | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
 148 };
 149
 150 static iomux_v3_cfg_t const usdhc4_pads[] = {
 151         MX6_PAD_SD4_CLK__SD4_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 152         MX6_PAD_SD4_CMD__SD4_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 153         MX6_PAD_SD4_DAT0__SD4_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 154         MX6_PAD_SD4_DAT1__SD4_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 155         MX6_PAD_SD4_DAT2__SD4_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 156         MX6_PAD_SD4_DAT3__SD4_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 157         MX6_PAD_NANDF_D6__GPIO2_IO06    | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
 158 };
 159
 160 static iomux_v3_cfg_t const enet_pads1[] = {
 161         MX6_PAD_ENET_MDIO__ENET_MDIO            | MUX_PAD_CTRL(ENET_PAD_CTRL),
 162         MX6_PAD_ENET_MDC__ENET_MDC              | MUX_PAD_CTRL(ENET_PAD_CTRL),
 163         MX6_PAD_RGMII_TXC__RGMII_TXC    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 164         MX6_PAD_RGMII_TD0__RGMII_TD0    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 165         MX6_PAD_RGMII_TD1__RGMII_TD1    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 166         MX6_PAD_RGMII_TD2__RGMII_TD2    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 167         MX6_PAD_RGMII_TD3__RGMII_TD3    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 168         MX6_PAD_RGMII_TX_CTL__RGMII_TX_CTL      | MUX_PAD_CTRL(ENET_PAD_CTRL),
 169         MX6_PAD_ENET_REF_CLK__ENET_TX_CLK       | MUX_PAD_CTRL(ENET_PAD_CTRL),
 170         /* pin 35 - 1 (PHY_AD2) on reset */
 171         MX6_PAD_RGMII_RXC__GPIO6_IO30           | MUX_PAD_CTRL(NO_PAD_CTRL),
 172         /* pin 32 - 1 - (MODE0) all */
 173         MX6_PAD_RGMII_RD0__GPIO6_IO25           | MUX_PAD_CTRL(NO_PAD_CTRL),
 174         /* pin 31 - 1 - (MODE1) all */
 175         MX6_PAD_RGMII_RD1__GPIO6_IO27           | MUX_PAD_CTRL(NO_PAD_CTRL),
 176         /* pin 28 - 1 - (MODE2) all */
 177         MX6_PAD_RGMII_RD2__GPIO6_IO28           | MUX_PAD_CTRL(NO_PAD_CTRL),
 178         /* pin 27 - 1 - (MODE3) all */
 179         MX6_PAD_RGMII_RD3__GPIO6_IO29           | MUX_PAD_CTRL(NO_PAD_CTRL),
 180         /* pin 33 - 1 - (CLK125_EN) 125Mhz clockout enabled */
 181         MX6_PAD_RGMII_RX_CTL__GPIO6_IO24        | MUX_PAD_CTRL(NO_PAD_CTRL),
 182         /* pin 42 PHY nRST */
 183         MX6_PAD_EIM_D23__GPIO3_IO23             | MUX_PAD_CTRL(NO_PAD_CTRL),
 184         MX6_PAD_ENET_RXD0__GPIO1_IO27           | MUX_PAD_CTRL(NO_PAD_CTRL),
 185 };
 186
 187 static iomux_v3_cfg_t const enet_pads2[] = {
 188         MX6_PAD_RGMII_RXC__RGMII_RXC    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 189         MX6_PAD_RGMII_RD0__RGMII_RD0    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 190         MX6_PAD_RGMII_RD1__RGMII_RD1    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 191         MX6_PAD_RGMII_RD2__RGMII_RD2    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 192         MX6_PAD_RGMII_RD3__RGMII_RD3    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 193         MX6_PAD_RGMII_RX_CTL__RGMII_RX_CTL      | MUX_PAD_CTRL(ENET_PAD_CTRL),
 194 };
 195
 196 static iomux_v3_cfg_t const misc_pads[] = {
 197         MX6_PAD_GPIO_1__USB_OTG_ID              | MUX_PAD_CTRL(WEAK_PULLUP),
 198         MX6_PAD_KEY_COL4__USB_OTG_OC            | MUX_PAD_CTRL(WEAK_PULLUP),
 199         MX6_PAD_EIM_D30__USB_H1_OC              | MUX_PAD_CTRL(WEAK_PULLUP),
 200         /* OTG Power enable */
 201         MX6_PAD_EIM_D22__GPIO3_IO22             | MUX_PAD_CTRL(OUTPUT_40OHM),
 202 };
 203
 204 /* wl1271 pads on nitrogen6x */
 205 static iomux_v3_cfg_t const wl12xx_pads[] = {
 206         (MX6_PAD_NANDF_CS1__GPIO6_IO14 & ~MUX_PAD_CTRL_MASK)
 207                 | MUX_PAD_CTRL(WEAK_PULLDOWN),
 208         (MX6_PAD_NANDF_CS2__GPIO6_IO15 & ~MUX_PAD_CTRL_MASK)
 209                 | MUX_PAD_CTRL(OUTPUT_40OHM),
 210         (MX6_PAD_NANDF_CS3__GPIO6_IO16 & ~MUX_PAD_CTRL_MASK)
 211                 | MUX_PAD_CTRL(OUTPUT_40OHM),
 212 };
 213 #define WL12XX_WL_IRQ_GP        IMX_GPIO_NR(6, 14)
 214 #define WL12XX_WL_ENABLE_GP     IMX_GPIO_NR(6, 15)
 215 #define WL12XX_BT_ENABLE_GP     IMX_GPIO_NR(6, 16)
 216
 217 /* Button assignments for J14 */
 218 static iomux_v3_cfg_t const button_pads[] = {
 219         /* Menu */
 220         MX6_PAD_NANDF_D1__GPIO2_IO01    | MUX_PAD_CTRL(BUTTON_PAD_CTRL),
 221         /* Back */
 222         MX6_PAD_NANDF_D2__GPIO2_IO02    | MUX_PAD_CTRL(BUTTON_PAD_CTRL),
 223         /* Labelled Search (mapped to Power under Android) */
 224         MX6_PAD_NANDF_D3__GPIO2_IO03    | MUX_PAD_CTRL(BUTTON_PAD_CTRL),
 225         /* Home */
 226         MX6_PAD_NANDF_D4__GPIO2_IO04    | MUX_PAD_CTRL(BUTTON_PAD_CTRL),
 227         /* Volume Down */
 228         MX6_PAD_GPIO_19__GPIO4_IO05     | MUX_PAD_CTRL(BUTTON_PAD_CTRL),
 229         /* Volume Up */
 230         MX6_PAD_GPIO_18__GPIO7_IO13     | MUX_PAD_CTRL(BUTTON_PAD_CTRL),
 231 };
 232
 233 static void setup_iomux_enet(void)
 234 {
 235         gpio_direction_output(IMX_GPIO_NR(3, 23), 0); /* SABRE Lite PHY rst */
 236         gpio_direction_output(IMX_GPIO_NR(1, 27), 0); /* Nitrogen6X PHY rst */
 237         gpio_direction_output(IMX_GPIO_NR(6, 30), 1);
 238         gpio_direction_output(IMX_GPIO_NR(6, 25), 1);
 239         gpio_direction_output(IMX_GPIO_NR(6, 27), 1);
 240         gpio_direction_output(IMX_GPIO_NR(6, 28), 1);
 241         gpio_direction_output(IMX_GPIO_NR(6, 29), 1);
 242         imx_iomux_v3_setup_multiple_pads(enet_pads1, ARRAY_SIZE(enet_pads1));
 243         gpio_direction_output(IMX_GPIO_NR(6, 24), 1);
 244
 245         /* Need delay 10ms according to KSZ9021 spec */
 246         udelay(1000 * 10);
 247         gpio_set_value(IMX_GPIO_NR(3, 23), 1); /* SABRE Lite PHY reset */
 248         gpio_set_value(IMX_GPIO_NR(1, 27), 1); /* Nitrogen6X PHY reset */
 249
 250         imx_iomux_v3_setup_multiple_pads(enet_pads2, ARRAY_SIZE(enet_pads2));
 251         udelay(100);    /* Wait 100 us before using mii interface */
 252 }
 253
 254 static iomux_v3_cfg_t const usb_pads[] = {
 255         MX6_PAD_GPIO_17__GPIO7_IO12 | MUX_PAD_CTRL(NO_PAD_CTRL),
 256 };
 257
 258 static void setup_iomux_uart(void)
 259 {
 260         imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
 261         imx_iomux_v3_setup_multiple_pads(uart2_pads, ARRAY_SIZE(uart2_pads));
 262 }
 263
 264 #ifdef CONFIG_USB_EHCI_MX6
 265 int board_ehci_hcd_init(int port)
 266 {
 267         imx_iomux_v3_setup_multiple_pads(usb_pads, ARRAY_SIZE(usb_pads));
 268
 269         /* Reset USB hub */
 270         gpio_direction_output(IMX_GPIO_NR(7, 12), 0);
 271         mdelay(2);
 272         gpio_set_value(IMX_GPIO_NR(7, 12), 1);
 273
 274         return 0;
 275 }
 276
 277 int board_ehci_power(int port, int on)
 278 {
 279         if (port)
 280                 return 0;
 281         gpio_set_value(GP_USB_OTG_PWR, on);
 282         return 0;
 283 }
 284
 285 #endif
 286
 287 #ifdef CONFIG_FSL_ESDHC
 288 static struct fsl_esdhc_cfg usdhc_cfg[2] = {
 289         {USDHC3_BASE_ADDR},
 290         {USDHC4_BASE_ADDR},
 291 };
 292
 293 int board_mmc_getcd(struct mmc *mmc)
 294 {
 295         struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
 296         int gp_cd = (cfg->esdhc_base == USDHC3_BASE_ADDR) ? IMX_GPIO_NR(7, 0) :
 297                         IMX_GPIO_NR(2, 6);
 298
 299         gpio_direction_input(gp_cd);
 300         return !gpio_get_value(gp_cd);
 301 }
 302
 303 int board_mmc_init(bd_t *bis)
 304 {
 305         int ret;
 306         u32 index = 0;
 307
 308         usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
 309         usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK);
 310
 311         usdhc_cfg[0].max_bus_width = 4;
 312         usdhc_cfg[1].max_bus_width = 4;
 313
 314         for (index = 0; index < CONFIG_SYS_FSL_USDHC_NUM; ++index) {
 315                 switch (index) {
 316                 case 0:
 317                         imx_iomux_v3_setup_multiple_pads(
 318                                 usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
 319                         break;
 320                 case 1:
 321                        imx_iomux_v3_setup_multiple_pads(
 322                                usdhc4_pads, ARRAY_SIZE(usdhc4_pads));
 323                        break;
 324                 default:
 325                        printf("Warning: you configured more USDHC controllers"
 326                                "(%d) then supported by the board (%d)\n",
 327                                index + 1, CONFIG_SYS_FSL_USDHC_NUM);
 328                        return -EINVAL;
 329                 }
 330
 331                 ret = fsl_esdhc_initialize(bis, &usdhc_cfg[index]);
 332                 if (ret)
 333                         return ret;
 334         }
 335
 336         return 0;
 337 }
 338 #endif
 339
 340 #ifdef CONFIG_MXC_SPI
 341 int board_spi_cs_gpio(unsigned bus, unsigned cs)
 342 {
 343         return (bus == 0 && cs == 0) ? (IMX_GPIO_NR(3, 19)) : -1;
 344 }
 345
 346 static iomux_v3_cfg_t const ecspi1_pads[] = {
 347         /* SS1 */
 348         MX6_PAD_EIM_D19__GPIO3_IO19  | MUX_PAD_CTRL(NO_PAD_CTRL),
 349         MX6_PAD_EIM_D17__ECSPI1_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL),
 350         MX6_PAD_EIM_D18__ECSPI1_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL),
 351         MX6_PAD_EIM_D16__ECSPI1_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL),
 352 };
 353
 354 static void setup_spi(void)
 355 {
 356         imx_iomux_v3_setup_multiple_pads(ecspi1_pads,
 357                                          ARRAY_SIZE(ecspi1_pads));
 358 }
 359 #endif
 360
 361 int board_phy_config(struct phy_device *phydev)
 362 {
 363         /* min rx data delay */
 364         ksz9021_phy_extended_write(phydev,
 365                         MII_KSZ9021_EXT_RGMII_RX_DATA_SKEW, 0x0);
 366         /* min tx data delay */
 367         ksz9021_phy_extended_write(phydev,
 368                         MII_KSZ9021_EXT_RGMII_TX_DATA_SKEW, 0x0);
 369         /* max rx/tx clock delay, min rx/tx control */
 370         ksz9021_phy_extended_write(phydev,
 371                         MII_KSZ9021_EXT_RGMII_CLOCK_SKEW, 0xf0f0);
 372         if (phydev->drv->config)
 373                 phydev->drv->config(phydev);
 374
 375         return 0;
 376 }
 377
 378 int board_eth_init(bd_t *bis)
 379 {
 380         uint32_t base = IMX_FEC_BASE;
 381         struct mii_dev *bus = NULL;
 382         struct phy_device *phydev = NULL;
 383         int ret;
 384
 385         setup_iomux_enet();
 386
 387 #ifdef CONFIG_FEC_MXC
 388         bus = fec_get_miibus(base, -1);
 389         if (!bus)
 390                 return -EINVAL;
 391         /* scan phy 4,5,6,7 */
 392         phydev = phy_find_by_mask(bus, (0xf << 4), PHY_INTERFACE_MODE_RGMII);
 393         if (!phydev) {
 394                 ret = -EINVAL;
 395                 goto free_bus;
 396         }
 397         printf("using phy at %d\n", phydev->addr);
 398         ret  = fec_probe(bis, -1, base, bus, phydev);
 399         if (ret)
 400                 goto free_phydev;
 401 #endif
 402
 403 #ifdef CONFIG_CI_UDC
 404         /* For otg ethernet*/
 405         usb_eth_initialize(bis);
 406 #endif
 407         return 0;
 408
 409 free_phydev:
 410         free(phydev);
 411 free_bus:
 412         free(bus);
 413         return ret;
 414 }
 415
 416 static void setup_buttons(void)
 417 {
 418         imx_iomux_v3_setup_multiple_pads(button_pads,
 419                                          ARRAY_SIZE(button_pads));
 420 }
 421
 422 #if defined(CONFIG_VIDEO_IPUV3)
 423
 424 static iomux_v3_cfg_t const backlight_pads[] = {
 425         /* Backlight on RGB connector: J15 */
 426         MX6_PAD_SD1_DAT3__GPIO1_IO21 | MUX_PAD_CTRL(NO_PAD_CTRL),
 427 #define RGB_BACKLIGHT_GP IMX_GPIO_NR(1, 21)
 428
 429         /* Backlight on LVDS connector: J6 */
 430         MX6_PAD_SD1_CMD__GPIO1_IO18 | MUX_PAD_CTRL(NO_PAD_CTRL),
 431 #define LVDS_BACKLIGHT_GP IMX_GPIO_NR(1, 18)
 432 };
 433
 434 static iomux_v3_cfg_t const rgb_pads[] = {
 435         MX6_PAD_DI0_DISP_CLK__IPU1_DI0_DISP_CLK,
 436         MX6_PAD_DI0_PIN15__IPU1_DI0_PIN15,
 437         MX6_PAD_DI0_PIN2__IPU1_DI0_PIN02,
 438         MX6_PAD_DI0_PIN3__IPU1_DI0_PIN03,
 439         MX6_PAD_DI0_PIN4__GPIO4_IO20,
 440         MX6_PAD_DISP0_DAT0__IPU1_DISP0_DATA00,
 441         MX6_PAD_DISP0_DAT1__IPU1_DISP0_DATA01,
 442         MX6_PAD_DISP0_DAT2__IPU1_DISP0_DATA02,
 443         MX6_PAD_DISP0_DAT3__IPU1_DISP0_DATA03,
 444         MX6_PAD_DISP0_DAT4__IPU1_DISP0_DATA04,
 445         MX6_PAD_DISP0_DAT5__IPU1_DISP0_DATA05,
 446         MX6_PAD_DISP0_DAT6__IPU1_DISP0_DATA06,
 447         MX6_PAD_DISP0_DAT7__IPU1_DISP0_DATA07,
 448         MX6_PAD_DISP0_DAT8__IPU1_DISP0_DATA08,
 449         MX6_PAD_DISP0_DAT9__IPU1_DISP0_DATA09,
 450         MX6_PAD_DISP0_DAT10__IPU1_DISP0_DATA10,
 451         MX6_PAD_DISP0_DAT11__IPU1_DISP0_DATA11,
 452         MX6_PAD_DISP0_DAT12__IPU1_DISP0_DATA12,
 453         MX6_PAD_DISP0_DAT13__IPU1_DISP0_DATA13,
 454         MX6_PAD_DISP0_DAT14__IPU1_DISP0_DATA14,
 455         MX6_PAD_DISP0_DAT15__IPU1_DISP0_DATA15,
 456         MX6_PAD_DISP0_DAT16__IPU1_DISP0_DATA16,
 457         MX6_PAD_DISP0_DAT17__IPU1_DISP0_DATA17,
 458         MX6_PAD_DISP0_DAT18__IPU1_DISP0_DATA18,
 459         MX6_PAD_DISP0_DAT19__IPU1_DISP0_DATA19,
 460         MX6_PAD_DISP0_DAT20__IPU1_DISP0_DATA20,
 461         MX6_PAD_DISP0_DAT21__IPU1_DISP0_DATA21,
 462         MX6_PAD_DISP0_DAT22__IPU1_DISP0_DATA22,
 463         MX6_PAD_DISP0_DAT23__IPU1_DISP0_DATA23,
 464 };
 465
 466 static void do_enable_hdmi(struct display_info_t const *dev)
 467 {
 468         imx_enable_hdmi_phy();
 469 }
 470
 471 static int detect_i2c(struct display_info_t const *dev)
 472 {
 473         return ((0 == i2c_set_bus_num(dev->bus))
 474                 &&
 475                 (0 == i2c_probe(dev->addr)));
 476 }
 477
 478 static void enable_lvds(struct display_info_t const *dev)
 479 {
 480         struct iomuxc *iomux = (struct iomuxc *)
 481                                 IOMUXC_BASE_ADDR;
 482         u32 reg = readl(&iomux->gpr[2]);
 483         reg |= IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT;
 484         writel(reg, &iomux->gpr[2]);
 485         gpio_direction_output(LVDS_BACKLIGHT_GP, 1);
 486 }
 487
 488 static void enable_lvds_jeida(struct display_info_t const *dev)
 489 {
 490         struct iomuxc *iomux = (struct iomuxc *)
 491                                 IOMUXC_BASE_ADDR;
 492         u32 reg = readl(&iomux->gpr[2]);
 493         reg |= IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT
 494              |IOMUXC_GPR2_BIT_MAPPING_CH0_JEIDA;
 495         writel(reg, &iomux->gpr[2]);
 496         gpio_direction_output(LVDS_BACKLIGHT_GP, 1);
 497 }
 498
 499 static void enable_rgb(struct display_info_t const *dev)
 500 {
 501         imx_iomux_v3_setup_multiple_pads(
 502                 rgb_pads,
 503                  ARRAY_SIZE(rgb_pads));
 504         gpio_direction_output(RGB_BACKLIGHT_GP, 1);
 505 }
 506
 507 struct display_info_t const displays[] = {{
 508         .bus    = 1,
 509         .addr   = 0x50,
 510         .pixfmt = IPU_PIX_FMT_RGB24,
 511         .detect = detect_i2c,
 512         .enable = do_enable_hdmi,
 513         .mode   = {
 514                 .name           = "HDMI",
 515                 .refresh        = 60,
 516                 .xres           = 1024,
 517                 .yres           = 768,
 518                 .pixclock       = 15385,
 519                 .left_margin    = 220,
 520                 .right_margin   = 40,
 521                 .upper_margin   = 21,
 522                 .lower_margin   = 7,
 523                 .hsync_len      = 60,
 524                 .vsync_len      = 10,
 525                 .sync           = FB_SYNC_EXT,
 526                 .vmode          = FB_VMODE_NONINTERLACED
 527 } }, {
 528         .bus    = 0,
 529         .addr   = 0,
 530         .pixfmt = IPU_PIX_FMT_RGB24,
 531         .detect = NULL,
 532         .enable = enable_lvds_jeida,
 533         .mode   = {
 534                 .name           = "LDB-WXGA",
 535                 .refresh        = 60,
 536                 .xres           = 1280,
 537                 .yres           = 800,
 538                 .pixclock       = 14065,
 539                 .left_margin    = 40,
 540                 .right_margin   = 40,
 541                 .upper_margin   = 3,
 542                 .lower_margin   = 80,
 543                 .hsync_len      = 10,
 544                 .vsync_len      = 10,
 545                 .sync           = FB_SYNC_EXT,
 546                 .vmode          = FB_VMODE_NONINTERLACED
 547 } }, {
 548         .bus    = 0,
 549         .addr   = 0,
 550         .pixfmt = IPU_PIX_FMT_RGB24,
 551         .detect = NULL,
 552         .enable = enable_lvds,
 553         .mode   = {
 554                 .name           = "LDB-WXGA-S",
 555                 .refresh        = 60,
 556                 .xres           = 1280,
 557                 .yres           = 800,
 558                 .pixclock       = 14065,
 559                 .left_margin    = 40,
 560                 .right_margin   = 40,
 561                 .upper_margin   = 3,
 562                 .lower_margin   = 80,
 563                 .hsync_len      = 10,
 564                 .vsync_len      = 10,
 565                 .sync           = FB_SYNC_EXT,
 566                 .vmode          = FB_VMODE_NONINTERLACED
 567 } }, {
 568         .bus    = 2,
 569         .addr   = 0x4,
 570         .pixfmt = IPU_PIX_FMT_LVDS666,
 571         .detect = detect_i2c,
 572         .enable = enable_lvds,
 573         .mode   = {
 574                 .name           = "Hannstar-XGA",
 575                 .refresh        = 60,
 576                 .xres           = 1024,
 577                 .yres           = 768,
 578                 .pixclock       = 15385,
 579                 .left_margin    = 220,
 580                 .right_margin   = 40,
 581                 .upper_margin   = 21,
 582                 .lower_margin   = 7,
 583                 .hsync_len      = 60,
 584                 .vsync_len      = 10,
 585                 .sync           = FB_SYNC_EXT,
 586                 .vmode          = FB_VMODE_NONINTERLACED
 587 } }, {
 588         .bus    = 0,
 589         .addr   = 0,
 590         .pixfmt = IPU_PIX_FMT_LVDS666,
 591         .detect = NULL,
 592         .enable = enable_lvds,
 593         .mode   = {
 594                 .name           = "LG-9.7",
 595                 .refresh        = 60,
 596                 .xres           = 1024,
 597                 .yres           = 768,
 598                 .pixclock       = 15385, /* ~65MHz */
 599                 .left_margin    = 480,
 600                 .right_margin   = 260,
 601                 .upper_margin   = 16,
 602                 .lower_margin   = 6,
 603                 .hsync_len      = 250,
 604                 .vsync_len      = 10,
 605                 .sync           = FB_SYNC_EXT,
 606                 .vmode          = FB_VMODE_NONINTERLACED
 607 } }, {
 608         .bus    = 2,
 609         .addr   = 0x38,
 610         .pixfmt = IPU_PIX_FMT_LVDS666,
 611         .detect = detect_i2c,
 612         .enable = enable_lvds,
 613         .mode   = {
 614                 .name           = "wsvga-lvds",
 615                 .refresh        = 60,
 616                 .xres           = 1024,
 617                 .yres           = 600,
 618                 .pixclock       = 15385,
 619                 .left_margin    = 220,
 620                 .right_margin   = 40,
 621                 .upper_margin   = 21,
 622                 .lower_margin   = 7,
 623                 .hsync_len      = 60,
 624                 .vsync_len      = 10,
 625                 .sync           = FB_SYNC_EXT,
 626                 .vmode          = FB_VMODE_NONINTERLACED
 627 } }, {
 628         .bus    = 2,
 629         .addr   = 0x10,
 630         .pixfmt = IPU_PIX_FMT_RGB666,
 631         .detect = detect_i2c,
 632         .enable = enable_rgb,
 633         .mode   = {
 634                 .name           = "fusion7",
 635                 .refresh        = 60,
 636                 .xres           = 800,
 637                 .yres           = 480,
 638                 .pixclock       = 33898,
 639                 .left_margin    = 96,
 640                 .right_margin   = 24,
 641                 .upper_margin   = 3,
 642                 .lower_margin   = 10,
 643                 .hsync_len      = 72,
 644                 .vsync_len      = 7,
 645                 .sync           = 0x40000002,
 646                 .vmode          = FB_VMODE_NONINTERLACED
 647 } }, {
 648         .bus    = 0,
 649         .addr   = 0,
 650         .pixfmt = IPU_PIX_FMT_RGB666,
 651         .detect = NULL,
 652         .enable = enable_rgb,
 653         .mode   = {
 654                 .name           = "svga",
 655                 .refresh        = 60,
 656                 .xres           = 800,
 657                 .yres           = 600,
 658                 .pixclock       = 15385,
 659                 .left_margin    = 220,
 660                 .right_margin   = 40,
 661                 .upper_margin   = 21,
 662                 .lower_margin   = 7,
 663                 .hsync_len      = 60,
 664                 .vsync_len      = 10,
 665                 .sync           = 0,
 666                 .vmode          = FB_VMODE_NONINTERLACED
 667 } }, {
 668         .bus    = 2,
 669         .addr   = 0x41,
 670         .pixfmt = IPU_PIX_FMT_LVDS666,
 671         .detect = detect_i2c,
 672         .enable = enable_lvds,
 673         .mode   = {
 674                 .name           = "amp1024x600",
 675                 .refresh        = 60,
 676                 .xres           = 1024,
 677                 .yres           = 600,
 678                 .pixclock       = 15385,
 679                 .left_margin    = 220,
 680                 .right_margin   = 40,
 681                 .upper_margin   = 21,
 682                 .lower_margin   = 7,
 683                 .hsync_len      = 60,
 684                 .vsync_len      = 10,
 685                 .sync           = FB_SYNC_EXT,
 686                 .vmode          = FB_VMODE_NONINTERLACED
 687 } }, {
 688         .bus    = 0,
 689         .addr   = 0,
 690         .pixfmt = IPU_PIX_FMT_LVDS666,
 691         .detect = 0,
 692         .enable = enable_lvds,
 693         .mode   = {
 694                 .name           = "wvga-lvds",
 695                 .refresh        = 57,
 696                 .xres           = 800,
 697                 .yres           = 480,
 698                 .pixclock       = 15385,
 699                 .left_margin    = 220,
 700                 .right_margin   = 40,
 701                 .upper_margin   = 21,
 702                 .lower_margin   = 7,
 703                 .hsync_len      = 60,
 704                 .vsync_len      = 10,
 705                 .sync           = FB_SYNC_EXT,
 706                 .vmode          = FB_VMODE_NONINTERLACED
 707 } }, {
 708         .bus    = 2,
 709         .addr   = 0x48,
 710         .pixfmt = IPU_PIX_FMT_RGB666,
 711         .detect = detect_i2c,
 712         .enable = enable_rgb,
 713         .mode   = {
 714                 .name           = "wvga-rgb",
 715                 .refresh        = 57,
 716                 .xres           = 800,
 717                 .yres           = 480,
 718                 .pixclock       = 37037,
 719                 .left_margin    = 40,
 720                 .right_margin   = 60,
 721                 .upper_margin   = 10,
 722                 .lower_margin   = 10,
 723                 .hsync_len      = 20,
 724                 .vsync_len      = 10,
 725                 .sync           = 0,
 726                 .vmode          = FB_VMODE_NONINTERLACED
 727 } }, {
 728         .bus    = 0,
 729         .addr   = 0,
 730         .pixfmt = IPU_PIX_FMT_RGB24,
 731         .detect = NULL,
 732         .enable = enable_rgb,
 733         .mode   = {
 734                 .name           = "qvga",
 735                 .refresh        = 60,
 736                 .xres           = 320,
 737                 .yres           = 240,
 738                 .pixclock       = 37037,
 739                 .left_margin    = 38,
 740                 .right_margin   = 37,
 741                 .upper_margin   = 16,
 742                 .lower_margin   = 15,
 743                 .hsync_len      = 30,
 744                 .vsync_len      = 3,
 745                 .sync           = 0,
 746                 .vmode          = FB_VMODE_NONINTERLACED
 747 } } };
 748 size_t display_count = ARRAY_SIZE(displays);
 749
 750 int board_cfb_skip(void)
 751 {
 752         return NULL != getenv("novideo");
 753 }
 754
 755 static void setup_display(void)
 756 {
 757         struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 758         struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
 759         int reg;
 760
 761         enable_ipu_clock();
 762         imx_setup_hdmi();
 763         /* Turn on LDB0,IPU,IPU DI0 clocks */
 764         reg = __raw_readl(&mxc_ccm->CCGR3);
 765         reg |=  MXC_CCM_CCGR3_LDB_DI0_MASK;
 766         writel(reg, &mxc_ccm->CCGR3);
 767
 768         /* set LDB0, LDB1 clk select to 011/011 */
 769         reg = readl(&mxc_ccm->cs2cdr);
 770         reg &= ~(MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK
 771                  |MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_MASK);
 772         reg |= (3<<MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET)
 773               |(3<<MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_OFFSET);
 774         writel(reg, &mxc_ccm->cs2cdr);
 775
 776         reg = readl(&mxc_ccm->cscmr2);
 777         reg |= MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV;
 778         writel(reg, &mxc_ccm->cscmr2);
 779
 780         reg = readl(&mxc_ccm->chsccdr);
 781         reg |= (CHSCCDR_CLK_SEL_LDB_DI0
 782                 <<MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET);
 783         writel(reg, &mxc_ccm->chsccdr);
 784
 785         reg = IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES
 786              |IOMUXC_GPR2_DI1_VS_POLARITY_ACTIVE_HIGH
 787              |IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_LOW
 788              |IOMUXC_GPR2_BIT_MAPPING_CH1_SPWG
 789              |IOMUXC_GPR2_DATA_WIDTH_CH1_18BIT
 790              |IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG
 791              |IOMUXC_GPR2_DATA_WIDTH_CH0_18BIT
 792              |IOMUXC_GPR2_LVDS_CH1_MODE_DISABLED
 793              |IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0;
 794         writel(reg, &iomux->gpr[2]);
 795
 796         reg = readl(&iomux->gpr[3]);
 797         reg = (reg & ~(IOMUXC_GPR3_LVDS0_MUX_CTL_MASK
 798                         |IOMUXC_GPR3_HDMI_MUX_CTL_MASK))
 799             | (IOMUXC_GPR3_MUX_SRC_IPU1_DI0
 800                <<IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET);
 801         writel(reg, &iomux->gpr[3]);
 802
 803         /* backlights off until needed */
 804         imx_iomux_v3_setup_multiple_pads(backlight_pads,
 805                                          ARRAY_SIZE(backlight_pads));
 806         gpio_direction_input(LVDS_BACKLIGHT_GP);
 807         gpio_direction_input(RGB_BACKLIGHT_GP);
 808 }
 809 #endif
 810
 811 static iomux_v3_cfg_t const init_pads[] = {
 812         /* SGTL5000 sys_mclk */
 813         NEW_PAD_CTRL(MX6_PAD_GPIO_0__CCM_CLKO1, OUTPUT_40OHM),
 814
 815         /* J5 - Camera MCLK */
 816         NEW_PAD_CTRL(MX6_PAD_GPIO_3__CCM_CLKO2, OUTPUT_40OHM),
 817
 818         /* wl1271 pads on nitrogen6x */
 819         /* WL12XX_WL_IRQ_GP */
 820         NEW_PAD_CTRL(MX6_PAD_NANDF_CS1__GPIO6_IO14, WEAK_PULLDOWN),
 821         /* WL12XX_WL_ENABLE_GP */
 822         NEW_PAD_CTRL(MX6_PAD_NANDF_CS2__GPIO6_IO15, OUTPUT_40OHM),
 823         /* WL12XX_BT_ENABLE_GP */
 824         NEW_PAD_CTRL(MX6_PAD_NANDF_CS3__GPIO6_IO16, OUTPUT_40OHM),
 825         /* USB otg power */
 826         NEW_PAD_CTRL(MX6_PAD_EIM_D22__GPIO3_IO22, OUTPUT_40OHM),
 827         NEW_PAD_CTRL(MX6_PAD_NANDF_D5__GPIO2_IO05, OUTPUT_40OHM),
 828         NEW_PAD_CTRL(MX6_PAD_NANDF_WP_B__GPIO6_IO09, OUTPUT_40OHM),
 829         NEW_PAD_CTRL(MX6_PAD_GPIO_8__GPIO1_IO08, OUTPUT_40OHM),
 830         NEW_PAD_CTRL(MX6_PAD_GPIO_6__GPIO1_IO06, OUTPUT_40OHM),
 831 };
 832
 833 #define WL12XX_WL_IRQ_GP        IMX_GPIO_NR(6, 14)
 834
 835 static unsigned gpios_out_low[] = {
 836         /* Disable wl1271 */
 837         IMX_GPIO_NR(6, 15),     /* disable wireless */
 838         IMX_GPIO_NR(6, 16),     /* disable bluetooth */
 839         IMX_GPIO_NR(3, 22),     /* disable USB otg power */
 840         IMX_GPIO_NR(2, 5),      /* ov5640 mipi camera reset */
 841         IMX_GPIO_NR(1, 8),      /* ov5642 reset */
 842 };
 843
 844 static unsigned gpios_out_high[] = {
 845         IMX_GPIO_NR(1, 6),      /* ov5642 powerdown */
 846         IMX_GPIO_NR(6, 9),      /* ov5640 mipi camera power down */
 847 };
 848
 849 static void set_gpios(unsigned *p, int cnt, int val)
 850 {
 851         int i;
 852
 853         for (i = 0; i < cnt; i++)
 854                 gpio_direction_output(*p++, val);
 855 }
 856
 857 int board_early_init_f(void)
 858 {
 859         setup_iomux_uart();
 860
 861         set_gpios(gpios_out_high, ARRAY_SIZE(gpios_out_high), 1);
 862         set_gpios(gpios_out_low, ARRAY_SIZE(gpios_out_low), 0);
 863         gpio_direction_input(WL12XX_WL_IRQ_GP);
 864
 865         imx_iomux_v3_setup_multiple_pads(wl12xx_pads, ARRAY_SIZE(wl12xx_pads));
 866         imx_iomux_v3_setup_multiple_pads(init_pads, ARRAY_SIZE(init_pads));
 867         setup_buttons();
 868
 869 #if defined(CONFIG_VIDEO_IPUV3)
 870         setup_display();
 871 #endif
 872         return 0;
 873 }
 874
 875 /*
 876  * Do not overwrite the console
 877  * Use always serial for U-Boot console
 878  */
 879 int overwrite_console(void)
 880 {
 881         return 1;
 882 }
 883
 884 int board_init(void)
 885 {
 886         struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
 887
 888         clrsetbits_le32(&iomuxc_regs->gpr[1],
 889                         IOMUXC_GPR1_OTG_ID_MASK,
 890                         IOMUXC_GPR1_OTG_ID_GPIO1);
 891
 892         imx_iomux_v3_setup_multiple_pads(misc_pads, ARRAY_SIZE(misc_pads));
 893
 894         /* address of boot parameters */
 895         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 896
 897 #ifdef CONFIG_MXC_SPI
 898         setup_spi();
 899 #endif
 900         imx_iomux_v3_setup_multiple_pads(
 901                 usdhc2_pads, ARRAY_SIZE(usdhc2_pads));
 902         setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info0);
 903         setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
 904         setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info2);
 905
 906 #ifdef CONFIG_SATA
 907         setup_sata();
 908 #endif
 909
 910         return 0;
 911 }
 912
 913 int checkboard(void)
 914 {
 915         if (gpio_get_value(WL12XX_WL_IRQ_GP))
 916                 puts("Board: Nitrogen6X\n");
 917         else
 918                 puts("Board: SABRE Lite\n");
 919
 920         return 0;
 921 }
 922
 923 struct button_key {
 924         char const      *name;
 925         unsigned        gpnum;
 926         char            ident;
 927 };
 928
 929 static struct button_key const buttons[] = {
 930         {"back",        IMX_GPIO_NR(2, 2),      'B'},
 931         {"home",        IMX_GPIO_NR(2, 4),      'H'},
 932         {"menu",        IMX_GPIO_NR(2, 1),      'M'},
 933         {"search",      IMX_GPIO_NR(2, 3),      'S'},
 934         {"volup",       IMX_GPIO_NR(7, 13),     'V'},
 935         {"voldown",     IMX_GPIO_NR(4, 5),      'v'},
 936 };
 937
 938 /*
 939  * generate a null-terminated string containing the buttons pressed
 940  * returns number of keys pressed
 941  */
 942 static int read_keys(char *buf)
 943 {
 944         int i, numpressed = 0;
 945         for (i = 0; i < ARRAY_SIZE(buttons); i++) {
 946                 if (!gpio_get_value(buttons[i].gpnum))
 947                         buf[numpressed++] = buttons[i].ident;
 948         }
 949         buf[numpressed] = '\0';
 950         return numpressed;
 951 }
 952
 953 static int do_kbd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 954 {
 955         char envvalue[ARRAY_SIZE(buttons)+1];
 956         int numpressed = read_keys(envvalue);
 957         setenv("keybd", envvalue);
 958         return numpressed == 0;
 959 }
 960
 961 U_BOOT_CMD(
 962         kbd, 1, 1, do_kbd,
 963         "Tests for keypresses, sets 'keybd' environment variable",
 964         "Returns 0 (true) to shell if key is pressed."
 965 );
 966
 967 #ifdef CONFIG_PREBOOT
 968 static char const kbd_magic_prefix[] = "key_magic";
 969 static char const kbd_command_prefix[] = "key_cmd";
 970
 971 static void preboot_keys(void)
 972 {
 973         int numpressed;
 974         char keypress[ARRAY_SIZE(buttons)+1];
 975         numpressed = read_keys(keypress);
 976         if (numpressed) {
 977                 char *kbd_magic_keys = getenv("magic_keys");
 978                 char *suffix;
 979                 /*
 980                  * loop over all magic keys
 981                  */
 982                 for (suffix = kbd_magic_keys; *suffix; ++suffix) {
 983                         char *keys;
 984                         char magic[sizeof(kbd_magic_prefix) + 1];
 985                         sprintf(magic, "%s%c", kbd_magic_prefix, *suffix);
 986                         keys = getenv(magic);
 987                         if (keys) {
 988                                 if (!strcmp(keys, keypress))
 989                                         break;
 990                         }
 991                 }
 992                 if (*suffix) {
 993                         char cmd_name[sizeof(kbd_command_prefix) + 1];
 994                         char *cmd;
 995                         sprintf(cmd_name, "%s%c", kbd_command_prefix, *suffix);
 996                         cmd = getenv(cmd_name);
 997                         if (cmd) {
 998                                 setenv("preboot", cmd);
 999                                 return;
1000                         }
1001                 }
1002         }
1003 }
1004 #endif
1005
1006 #ifdef CONFIG_CMD_BMODE
1007 static const struct boot_mode board_boot_modes[] = {
1008         /* 4 bit bus width */
1009         {"mmc0",        MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
1010         {"mmc1",        MAKE_CFGVAL(0x40, 0x38, 0x00, 0x00)},
1011         {NULL,          0},
1012 };
1013 #endif
1014
1015 int misc_init_r(void)
1016 {
1017 #ifdef CONFIG_PREBOOT
1018         preboot_keys();
1019 #endif
1020
1021 #ifdef CONFIG_CMD_BMODE
1022         add_board_boot_modes(board_boot_modes);
1023 #endif
1024         setenv_hex("reset_cause", get_imx_reset_cause());
1025         return 0;
1026 }