board/engicam/icorem6_rqs/icorem6_rqs.c

   1 /*
   2  * Copyright (C) 2016 Amarula Solutions B.V.
   3  * Copyright (C) 2016 Engicam S.r.l.
   4  * Author: Jagan Teki <jagan@amarulasolutions.com>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #include <common.h>
  10 #include <mmc.h>
  11
  12 #include <asm/io.h>
  13 #include <asm/gpio.h>
  14 #include <linux/sizes.h>
  15
  16 #include <asm/arch/clock.h>
  17 #include <asm/arch/crm_regs.h>
  18 #include <asm/arch/iomux.h>
  19 #include <asm/arch/mx6-pins.h>
  20 #include <asm/arch/sys_proto.h>
  21 #include <asm/imx-common/iomux-v3.h>
  22
  23 DECLARE_GLOBAL_DATA_PTR;
  24
  25 int board_init(void)
  26 {
  27         /* Address of boot parameters */
  28         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
  29
  30         return 0;
  31 }
  32
  33 #ifdef CONFIG_ENV_IS_IN_MMC
  34 int board_mmc_get_env_dev(int devno)
  35 {
  36         /* dev 0 for SD/eSD, dev 1 for MMC/eMMC */
  37         return (devno == 3) ? 1 : 0;
  38 }
  39
  40 static void mmc_late_init(void)
  41 {
  42         char cmd[32];
  43         char mmcblk[32];
  44         u32 dev_no = mmc_get_env_dev();
  45
  46         setenv_ulong("mmcdev", dev_no);
  47
  48         /* Set mmcblk env */
  49         sprintf(mmcblk, "/dev/mmcblk%dp2 rootwait rw", dev_no);
  50         setenv("mmcroot", mmcblk);
  51
  52         sprintf(cmd, "mmc dev %d", dev_no);
  53         run_command(cmd, 0);
  54 }
  55 #endif
  56
  57 int board_late_init(void)
  58 {
  59         switch ((imx6_src_get_boot_mode() & IMX6_BMODE_MASK) >>
  60                         IMX6_BMODE_SHIFT) {
  61         case IMX6_BMODE_SD:
  62         case IMX6_BMODE_ESD:
  63         case IMX6_BMODE_MMC:
  64         case IMX6_BMODE_EMMC:
  65 #ifdef CONFIG_ENV_IS_IN_MMC
  66                 mmc_late_init();
  67 #endif
  68                 setenv("modeboot", "mmcboot");
  69                 break;
  70         default:
  71                 setenv("modeboot", "");
  72                 break;
  73         }
  74
  75         if (is_mx6dq())
  76                 setenv("fdt_file", "imx6q-icore-rqs.dtb");
  77         else if(is_mx6dl() || is_mx6solo())
  78                 setenv("fdt_file", "imx6dl-icore-rqs.dtb");
  79
  80         return 0;
  81 }
  82
  83 int dram_init(void)
  84 {
  85         gd->ram_size = imx_ddr_size();
  86
  87         return 0;
  88 }
  89
  90 #ifdef CONFIG_SPL_BUILD
  91 #include <libfdt.h>
  92 #include <spl.h>
  93
  94 #include <asm/arch/crm_regs.h>
  95 #include <asm/arch/mx6-ddr.h>
  96
  97 #define UART_PAD_CTRL  (PAD_CTL_PKE | PAD_CTL_PUE |             \
  98         PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED |               \
  99         PAD_CTL_DSE_40ohm   | PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
 100
 101 static iomux_v3_cfg_t const uart4_pads[] = {
 102         IOMUX_PADS(PAD_KEY_COL0__UART4_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
 103         IOMUX_PADS(PAD_KEY_ROW0__UART4_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
 104 };
 105
 106 /* MMC board initialization is needed till adding DM support in SPL */
 107 #if defined(CONFIG_FSL_ESDHC) && !defined(CONFIG_DM_MMC)
 108 #include <mmc.h>
 109 #include <fsl_esdhc.h>
 110
 111 #define USDHC_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE |             \
 112         PAD_CTL_PUS_47K_UP  | PAD_CTL_SPEED_HIGH |               \
 113         PAD_CTL_DSE_40ohm   | PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
 114
 115 static iomux_v3_cfg_t const usdhc3_pads[] = {
 116         IOMUX_PADS(PAD_SD3_CLK__SD3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 117         IOMUX_PADS(PAD_SD3_CMD__SD3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 118         IOMUX_PADS(PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 119         IOMUX_PADS(PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 120         IOMUX_PADS(PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 121         IOMUX_PADS(PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 122 };
 123
 124 static iomux_v3_cfg_t const usdhc4_pads[] = {
 125         IOMUX_PADS(PAD_SD4_CLK__SD4_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 126         IOMUX_PADS(PAD_SD4_CMD__SD4_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 127         IOMUX_PADS(PAD_SD4_DAT0__SD4_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 128         IOMUX_PADS(PAD_SD4_DAT1__SD4_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 129         IOMUX_PADS(PAD_SD4_DAT2__SD4_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 130         IOMUX_PADS(PAD_SD4_DAT3__SD4_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 131         IOMUX_PADS(PAD_SD4_DAT4__SD4_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 132         IOMUX_PADS(PAD_SD4_DAT5__SD4_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 133         IOMUX_PADS(PAD_SD4_DAT6__SD4_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 134         IOMUX_PADS(PAD_SD4_DAT7__SD4_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 135 };
 136
 137 struct fsl_esdhc_cfg usdhc_cfg[2] = {
 138         {USDHC3_BASE_ADDR, 1, 4},
 139         {USDHC4_BASE_ADDR, 1, 8},
 140 };
 141
 142 int board_mmc_getcd(struct mmc *mmc)
 143 {
 144         struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
 145         int ret = 0;
 146
 147         switch (cfg->esdhc_base) {
 148         case USDHC3_BASE_ADDR:
 149         case USDHC4_BASE_ADDR:
 150                 ret = 1;
 151                 break;
 152         }
 153
 154         return ret;
 155 }
 156
 157 int board_mmc_init(bd_t *bis)
 158 {
 159         int i, ret;
 160
 161         /*
 162         * According to the board_mmc_init() the following map is done:
 163         * (U-boot device node)    (Physical Port)
 164         * mmc0                  USDHC3
 165         * mmc1                  USDHC4
 166         */
 167         for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) {
 168                 switch (i) {
 169                 case 0:
 170                         SETUP_IOMUX_PADS(usdhc3_pads);
 171                         usdhc_cfg[i].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
 172                         break;
 173                 case 1:
 174                         SETUP_IOMUX_PADS(usdhc4_pads);
 175                         usdhc_cfg[i].sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK);
 176                         break;
 177                 default:
 178                         printf("Warning - USDHC%d controller not supporting\n",
 179                                i + 1);
 180                         return 0;
 181                 }
 182
 183                 ret = fsl_esdhc_initialize(bis, &usdhc_cfg[i]);
 184                 if (ret) {
 185                         printf("Warning: failed to initialize mmc dev %d\n", i);
 186                         return ret;
 187                 }
 188         }
 189
 190         return 0;
 191 }
 192
 193 #ifdef CONFIG_ENV_IS_IN_MMC
 194 void board_boot_order(u32 *spl_boot_list)
 195 {
 196         u32 bmode = imx6_src_get_boot_mode();
 197         u8 boot_dev = BOOT_DEVICE_MMC1;
 198
 199         switch ((bmode & IMX6_BMODE_MASK) >> IMX6_BMODE_SHIFT) {
 200         case IMX6_BMODE_SD:
 201         case IMX6_BMODE_ESD:
 202                 /* SD/eSD - BOOT_DEVICE_MMC1 */
 203                 break;
 204         case IMX6_BMODE_MMC:
 205         case IMX6_BMODE_EMMC:
 206                 /* MMC/eMMC */
 207                 boot_dev = BOOT_DEVICE_MMC2;
 208                 break;
 209         default:
 210                 /* Default - BOOT_DEVICE_MMC1 */
 211                 printf("Wrong board boot order\n");
 212                 break;
 213         }
 214
 215         spl_boot_list[0] = boot_dev;
 216 }
 217 #endif
 218 #endif
 219
 220 #ifdef CONFIG_SPL_LOAD_FIT
 221 int board_fit_config_name_match(const char *name)
 222 {
 223         if (is_mx6dq() && !strcmp(name, "imx6q-icore-rqs"))
 224                 return 0;
 225         else if ((is_mx6dl() || is_mx6solo()) && !strcmp(name, "imx6dl-icore-rqs"))
 226                 return 0;
 227         else
 228                 return -1;
 229 }
 230 #endif
 231
 232 /*
 233  * Driving strength:
 234  *   0x30 == 40 Ohm
 235  *   0x28 == 48 Ohm
 236  */
 237
 238 #define IMX6DQ_DRIVE_STRENGTH           0x30
 239 #define IMX6SDL_DRIVE_STRENGTH          0x28
 240
 241 /* configure MX6Q/DUAL mmdc DDR io registers */
 242 static struct mx6dq_iomux_ddr_regs mx6dq_ddr_ioregs = {
 243         .dram_sdqs0 = IMX6DQ_DRIVE_STRENGTH,
 244         .dram_sdqs1 = IMX6DQ_DRIVE_STRENGTH,
 245         .dram_sdqs2 = IMX6DQ_DRIVE_STRENGTH,
 246         .dram_sdqs3 = IMX6DQ_DRIVE_STRENGTH,
 247         .dram_sdqs4 = IMX6DQ_DRIVE_STRENGTH,
 248         .dram_sdqs5 = IMX6DQ_DRIVE_STRENGTH,
 249         .dram_sdqs6 = IMX6DQ_DRIVE_STRENGTH,
 250         .dram_sdqs7 = IMX6DQ_DRIVE_STRENGTH,
 251         .dram_dqm0 = IMX6DQ_DRIVE_STRENGTH,
 252         .dram_dqm1 = IMX6DQ_DRIVE_STRENGTH,
 253         .dram_dqm2 = IMX6DQ_DRIVE_STRENGTH,
 254         .dram_dqm3 = IMX6DQ_DRIVE_STRENGTH,
 255         .dram_dqm4 = IMX6DQ_DRIVE_STRENGTH,
 256         .dram_dqm5 = IMX6DQ_DRIVE_STRENGTH,
 257         .dram_dqm6 = IMX6DQ_DRIVE_STRENGTH,
 258         .dram_dqm7 = IMX6DQ_DRIVE_STRENGTH,
 259         .dram_cas = IMX6DQ_DRIVE_STRENGTH,
 260         .dram_ras = IMX6DQ_DRIVE_STRENGTH,
 261         .dram_sdclk_0 = IMX6DQ_DRIVE_STRENGTH,
 262         .dram_sdclk_1 = IMX6DQ_DRIVE_STRENGTH,
 263         .dram_reset = IMX6DQ_DRIVE_STRENGTH,
 264         .dram_sdcke0 = IMX6DQ_DRIVE_STRENGTH,
 265         .dram_sdcke1 = IMX6DQ_DRIVE_STRENGTH,
 266         .dram_sdba2 = 0x00000000,
 267         .dram_sdodt0 = IMX6DQ_DRIVE_STRENGTH,
 268         .dram_sdodt1 = IMX6DQ_DRIVE_STRENGTH,
 269 };
 270
 271 /* configure MX6Q/DUAL mmdc GRP io registers */
 272 static struct mx6dq_iomux_grp_regs mx6dq_grp_ioregs = {
 273         .grp_b0ds = IMX6DQ_DRIVE_STRENGTH,
 274         .grp_b1ds = IMX6DQ_DRIVE_STRENGTH,
 275         .grp_b2ds = IMX6DQ_DRIVE_STRENGTH,
 276         .grp_b3ds = IMX6DQ_DRIVE_STRENGTH,
 277         .grp_b4ds = IMX6DQ_DRIVE_STRENGTH,
 278         .grp_b5ds = IMX6DQ_DRIVE_STRENGTH,
 279         .grp_b6ds = IMX6DQ_DRIVE_STRENGTH,
 280         .grp_b7ds = IMX6DQ_DRIVE_STRENGTH,
 281         .grp_addds = IMX6DQ_DRIVE_STRENGTH,
 282         .grp_ddrmode_ctl = 0x00020000,
 283         .grp_ddrpke = 0x00000000,
 284         .grp_ddrmode = 0x00020000,
 285         .grp_ctlds = IMX6DQ_DRIVE_STRENGTH,
 286         .grp_ddr_type = 0x000c0000,
 287 };
 288
 289 /* configure MX6SOLO/DUALLITE mmdc DDR io registers */
 290 struct mx6sdl_iomux_ddr_regs mx6sdl_ddr_ioregs = {
 291         .dram_sdclk_0 = IMX6SDL_DRIVE_STRENGTH,
 292         .dram_sdclk_1 = IMX6SDL_DRIVE_STRENGTH,
 293         .dram_cas = IMX6SDL_DRIVE_STRENGTH,
 294         .dram_ras = IMX6SDL_DRIVE_STRENGTH,
 295         .dram_reset = IMX6SDL_DRIVE_STRENGTH,
 296         .dram_sdcke0 = IMX6SDL_DRIVE_STRENGTH,
 297         .dram_sdcke1 = IMX6SDL_DRIVE_STRENGTH,
 298         .dram_sdba2 = 0x00000000,
 299         .dram_sdodt0 = IMX6SDL_DRIVE_STRENGTH,
 300         .dram_sdodt1 = IMX6SDL_DRIVE_STRENGTH,
 301         .dram_sdqs0 = IMX6SDL_DRIVE_STRENGTH,
 302         .dram_sdqs1 = IMX6SDL_DRIVE_STRENGTH,
 303         .dram_sdqs2 = IMX6SDL_DRIVE_STRENGTH,
 304         .dram_sdqs3 = IMX6SDL_DRIVE_STRENGTH,
 305         .dram_sdqs4 = IMX6SDL_DRIVE_STRENGTH,
 306         .dram_sdqs5 = IMX6SDL_DRIVE_STRENGTH,
 307         .dram_sdqs6 = IMX6SDL_DRIVE_STRENGTH,
 308         .dram_sdqs7 = IMX6SDL_DRIVE_STRENGTH,
 309         .dram_dqm0 = IMX6SDL_DRIVE_STRENGTH,
 310         .dram_dqm1 = IMX6SDL_DRIVE_STRENGTH,
 311         .dram_dqm2 = IMX6SDL_DRIVE_STRENGTH,
 312         .dram_dqm3 = IMX6SDL_DRIVE_STRENGTH,
 313         .dram_dqm4 = IMX6SDL_DRIVE_STRENGTH,
 314         .dram_dqm5 = IMX6SDL_DRIVE_STRENGTH,
 315         .dram_dqm6 = IMX6SDL_DRIVE_STRENGTH,
 316         .dram_dqm7 = IMX6SDL_DRIVE_STRENGTH,
 317 };
 318
 319 /* configure MX6SOLO/DUALLITE mmdc GRP io registers */
 320 struct mx6sdl_iomux_grp_regs mx6sdl_grp_ioregs = {
 321         .grp_ddr_type = 0x000c0000,
 322         .grp_ddrmode_ctl = 0x00020000,
 323         .grp_ddrpke = 0x00000000,
 324         .grp_addds = IMX6SDL_DRIVE_STRENGTH,
 325         .grp_ctlds = IMX6SDL_DRIVE_STRENGTH,
 326         .grp_ddrmode = 0x00020000,
 327         .grp_b0ds = IMX6SDL_DRIVE_STRENGTH,
 328         .grp_b1ds = IMX6SDL_DRIVE_STRENGTH,
 329         .grp_b2ds = IMX6SDL_DRIVE_STRENGTH,
 330         .grp_b3ds = IMX6SDL_DRIVE_STRENGTH,
 331         .grp_b4ds = IMX6SDL_DRIVE_STRENGTH,
 332         .grp_b5ds = IMX6SDL_DRIVE_STRENGTH,
 333         .grp_b6ds = IMX6SDL_DRIVE_STRENGTH,
 334         .grp_b7ds = IMX6SDL_DRIVE_STRENGTH,
 335 };
 336
 337 /* mt41j256 */
 338 static struct mx6_ddr3_cfg mt41j256 = {
 339         .mem_speed = 1066,
 340         .density = 2,
 341         .width = 16,
 342         .banks = 8,
 343         .rowaddr = 13,
 344         .coladdr = 10,
 345         .pagesz = 2,
 346         .trcd = 1375,
 347         .trcmin = 4875,
 348         .trasmin = 3500,
 349         .SRT = 0,
 350 };
 351
 352 static struct mx6_mmdc_calibration mx6dq_mmdc_calib = {
 353         .p0_mpwldectrl0 = 0x000E0009,
 354         .p0_mpwldectrl1 = 0x0018000E,
 355         .p1_mpwldectrl0 = 0x00000007,
 356         .p1_mpwldectrl1 = 0x00000000,
 357         .p0_mpdgctrl0 = 0x43280334,
 358         .p0_mpdgctrl1 = 0x031C0314,
 359         .p1_mpdgctrl0 = 0x4318031C,
 360         .p1_mpdgctrl1 = 0x030C0258,
 361         .p0_mprddlctl = 0x3E343A40,
 362         .p1_mprddlctl = 0x383C3844,
 363         .p0_mpwrdlctl = 0x40404440,
 364         .p1_mpwrdlctl = 0x4C3E4446,
 365 };
 366
 367 /* DDR 64bit */
 368 static struct mx6_ddr_sysinfo mem_q = {
 369         .ddr_type       = DDR_TYPE_DDR3,
 370         .dsize          = 2,
 371         .cs1_mirror     = 0,
 372         /* config for full 4GB range so that get_mem_size() works */
 373         .cs_density     = 32,
 374         .ncs            = 1,
 375         .bi_on          = 1,
 376         .rtt_nom        = 2,
 377         .rtt_wr         = 2,
 378         .ralat          = 5,
 379         .walat          = 0,
 380         .mif3_mode      = 3,
 381         .rst_to_cke     = 0x23,
 382         .sde_to_rst     = 0x10,
 383 };
 384
 385 static struct mx6_mmdc_calibration mx6dl_mmdc_calib = {
 386         .p0_mpwldectrl0 = 0x001F0024,
 387         .p0_mpwldectrl1 = 0x00110018,
 388         .p1_mpwldectrl0 = 0x001F0024,
 389         .p1_mpwldectrl1 = 0x00110018,
 390         .p0_mpdgctrl0 = 0x4230022C,
 391         .p0_mpdgctrl1 = 0x02180220,
 392         .p1_mpdgctrl0 = 0x42440248,
 393         .p1_mpdgctrl1 = 0x02300238,
 394         .p0_mprddlctl = 0x44444A48,
 395         .p1_mprddlctl = 0x46484A42,
 396         .p0_mpwrdlctl = 0x38383234,
 397         .p1_mpwrdlctl = 0x3C34362E,
 398 };
 399
 400 /* DDR 64bit 1GB */
 401 static struct mx6_ddr_sysinfo mem_dl = {
 402         .dsize          = 2,
 403         .cs1_mirror     = 0,
 404         /* config for full 4GB range so that get_mem_size() works */
 405         .cs_density     = 32,
 406         .ncs            = 1,
 407         .bi_on          = 1,
 408         .rtt_nom        = 1,
 409         .rtt_wr         = 1,
 410         .ralat          = 5,
 411         .walat          = 0,
 412         .mif3_mode      = 3,
 413         .rst_to_cke     = 0x23,
 414         .sde_to_rst     = 0x10,
 415 };
 416
 417 /* DDR 32bit 512MB */
 418 static struct mx6_ddr_sysinfo mem_s = {
 419         .dsize          = 1,
 420         .cs1_mirror     = 0,
 421         /* config for full 4GB range so that get_mem_size() works */
 422         .cs_density     = 32,
 423         .ncs            = 1,
 424         .bi_on          = 1,
 425         .rtt_nom        = 1,
 426         .rtt_wr         = 1,
 427         .ralat          = 5,
 428         .walat          = 0,
 429         .mif3_mode      = 3,
 430         .rst_to_cke     = 0x23,
 431         .sde_to_rst     = 0x10,
 432 };
 433
 434 static void ccgr_init(void)
 435 {
 436         struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 437
 438         writel(0x00003F3F, &ccm->CCGR0);
 439         writel(0x0030FC00, &ccm->CCGR1);
 440         writel(0x000FC000, &ccm->CCGR2);
 441         writel(0x3F300000, &ccm->CCGR3);
 442         writel(0xFF00F300, &ccm->CCGR4);
 443         writel(0x0F0000C3, &ccm->CCGR5);
 444         writel(0x000003CC, &ccm->CCGR6);
 445 }
 446
 447 static void gpr_init(void)
 448 {
 449         struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
 450
 451         /* enable AXI cache for VDOA/VPU/IPU */
 452         writel(0xF00000CF, &iomux->gpr[4]);
 453         /* set IPU AXI-id0 Qos=0xf(bypass) AXI-id1 Qos=0x7 */
 454         writel(0x007F007F, &iomux->gpr[6]);
 455         writel(0x007F007F, &iomux->gpr[7]);
 456 }
 457
 458 static void spl_dram_init(void)
 459 {
 460         if (is_mx6solo()) {
 461                 mx6sdl_dram_iocfg(32, &mx6sdl_ddr_ioregs, &mx6sdl_grp_ioregs);
 462                 mx6_dram_cfg(&mem_s, &mx6dl_mmdc_calib, &mt41j256);
 463         } else if (is_mx6dl()) {
 464                 mx6sdl_dram_iocfg(64, &mx6sdl_ddr_ioregs, &mx6sdl_grp_ioregs);
 465                 mx6_dram_cfg(&mem_dl, &mx6dl_mmdc_calib, &mt41j256);
 466         } else if (is_mx6dq()) {
 467                 mx6dq_dram_iocfg(64, &mx6dq_ddr_ioregs, &mx6dq_grp_ioregs);
 468                 mx6_dram_cfg(&mem_q, &mx6dq_mmdc_calib, &mt41j256);
 469         }
 470
 471         udelay(100);
 472 }
 473
 474 void board_init_f(ulong dummy)
 475 {
 476         ccgr_init();
 477
 478         /* setup AIPS and disable watchdog */
 479         arch_cpu_init();
 480
 481         gpr_init();
 482
 483         /* iomux */
 484         SETUP_IOMUX_PADS(uart4_pads);
 485
 486         /* setup GP timer */
 487         timer_init();
 488
 489         /* UART clocks enabled and gd valid - init serial console */
 490         preloader_console_init();
 491
 492         /* DDR initialization */
 493         spl_dram_init();
 494
 495         /* Clear the BSS. */
 496         memset(__bss_start, 0, __bss_end - __bss_start);
 497
 498         /* load/boot image from boot device */
 499         board_init_r(NULL, 0);
 500 }
 501 #endif