board/gateworks/gw_ventana/gw_ventana_spl.c

   1 /*
   2  * Copyright (C) 2014 Gateworks Corporation
   3  * Author: Tim Harvey <tharvey@gateworks.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <asm/io.h>
  10 #include <asm/arch/crm_regs.h>
  11 #include <asm/arch/mx6-ddr.h>
  12 #include <asm/arch/mx6-pins.h>
  13 #include <asm/arch/sys_proto.h>
  14 #include <asm/imx-common/boot_mode.h>
  15 #include <asm/imx-common/iomux-v3.h>
  16 #include <asm/imx-common/mxc_i2c.h>
  17 #include <environment.h>
  18 #include <i2c.h>
  19 #include <spl.h>
  20
  21 #include "gsc.h"
  22 #include "common.h"
  23
  24 DECLARE_GLOBAL_DATA_PTR;
  25
  26 #define RTT_NOM_120OHM /* use 120ohm Rtt_nom vs 60ohm (lower power) */
  27 #define GSC_EEPROM_DDR_SIZE     0x2B    /* enum (512,1024,2048) MB */
  28 #define GSC_EEPROM_DDR_WIDTH    0x2D    /* enum (32,64) bit */
  29
  30 /* configure MX6Q/DUAL mmdc DDR io registers */
  31 struct mx6dq_iomux_ddr_regs mx6dq_ddr_ioregs = {
  32         /* SDCLK[0:1], CAS, RAS, Reset: Differential input, 40ohm */
  33         .dram_sdclk_0 = 0x00020030,
  34         .dram_sdclk_1 = 0x00020030,
  35         .dram_cas = 0x00020030,
  36         .dram_ras = 0x00020030,
  37         .dram_reset = 0x00020030,
  38         /* SDCKE[0:1]: 100k pull-up */
  39         .dram_sdcke0 = 0x00003000,
  40         .dram_sdcke1 = 0x00003000,
  41         /* SDBA2: pull-up disabled */
  42         .dram_sdba2 = 0x00000000,
  43         /* SDODT[0:1]: 100k pull-up, 40 ohm */
  44         .dram_sdodt0 = 0x00003030,
  45         .dram_sdodt1 = 0x00003030,
  46         /* SDQS[0:7]: Differential input, 40 ohm */
  47         .dram_sdqs0 = 0x00000030,
  48         .dram_sdqs1 = 0x00000030,
  49         .dram_sdqs2 = 0x00000030,
  50         .dram_sdqs3 = 0x00000030,
  51         .dram_sdqs4 = 0x00000030,
  52         .dram_sdqs5 = 0x00000030,
  53         .dram_sdqs6 = 0x00000030,
  54         .dram_sdqs7 = 0x00000030,
  55
  56         /* DQM[0:7]: Differential input, 40 ohm */
  57         .dram_dqm0 = 0x00020030,
  58         .dram_dqm1 = 0x00020030,
  59         .dram_dqm2 = 0x00020030,
  60         .dram_dqm3 = 0x00020030,
  61         .dram_dqm4 = 0x00020030,
  62         .dram_dqm5 = 0x00020030,
  63         .dram_dqm6 = 0x00020030,
  64         .dram_dqm7 = 0x00020030,
  65 };
  66
  67 /* configure MX6Q/DUAL mmdc GRP io registers */
  68 struct mx6dq_iomux_grp_regs mx6dq_grp_ioregs = {
  69         /* DDR3 */
  70         .grp_ddr_type = 0x000c0000,
  71         .grp_ddrmode_ctl = 0x00020000,
  72         /* disable DDR pullups */
  73         .grp_ddrpke = 0x00000000,
  74         /* ADDR[00:16], SDBA[0:1]: 40 ohm */
  75         .grp_addds = 0x00000030,
  76         /* CS0/CS1/SDBA2/CKE0/CKE1/SDWE: 40 ohm */
  77         .grp_ctlds = 0x00000030,
  78         /* DATA[00:63]: Differential input, 40 ohm */
  79         .grp_ddrmode = 0x00020000,
  80         .grp_b0ds = 0x00000030,
  81         .grp_b1ds = 0x00000030,
  82         .grp_b2ds = 0x00000030,
  83         .grp_b3ds = 0x00000030,
  84         .grp_b4ds = 0x00000030,
  85         .grp_b5ds = 0x00000030,
  86         .grp_b6ds = 0x00000030,
  87         .grp_b7ds = 0x00000030,
  88 };
  89
  90 /* configure MX6SOLO/DUALLITE mmdc DDR io registers */
  91 struct mx6sdl_iomux_ddr_regs mx6sdl_ddr_ioregs = {
  92         /* SDCLK[0:1], CAS, RAS, Reset: Differential input, 40ohm */
  93         .dram_sdclk_0 = 0x00020030,
  94         .dram_sdclk_1 = 0x00020030,
  95         .dram_cas = 0x00020030,
  96         .dram_ras = 0x00020030,
  97         .dram_reset = 0x00020030,
  98         /* SDCKE[0:1]: 100k pull-up */
  99         .dram_sdcke0 = 0x00003000,
 100         .dram_sdcke1 = 0x00003000,
 101         /* SDBA2: pull-up disabled */
 102         .dram_sdba2 = 0x00000000,
 103         /* SDODT[0:1]: 100k pull-up, 40 ohm */
 104         .dram_sdodt0 = 0x00003030,
 105         .dram_sdodt1 = 0x00003030,
 106         /* SDQS[0:7]: Differential input, 40 ohm */
 107         .dram_sdqs0 = 0x00000030,
 108         .dram_sdqs1 = 0x00000030,
 109         .dram_sdqs2 = 0x00000030,
 110         .dram_sdqs3 = 0x00000030,
 111         .dram_sdqs4 = 0x00000030,
 112         .dram_sdqs5 = 0x00000030,
 113         .dram_sdqs6 = 0x00000030,
 114         .dram_sdqs7 = 0x00000030,
 115
 116         /* DQM[0:7]: Differential input, 40 ohm */
 117         .dram_dqm0 = 0x00020030,
 118         .dram_dqm1 = 0x00020030,
 119         .dram_dqm2 = 0x00020030,
 120         .dram_dqm3 = 0x00020030,
 121         .dram_dqm4 = 0x00020030,
 122         .dram_dqm5 = 0x00020030,
 123         .dram_dqm6 = 0x00020030,
 124         .dram_dqm7 = 0x00020030,
 125 };
 126
 127 /* configure MX6SOLO/DUALLITE mmdc GRP io registers */
 128 struct mx6sdl_iomux_grp_regs mx6sdl_grp_ioregs = {
 129         /* DDR3 */
 130         .grp_ddr_type = 0x000c0000,
 131         /* SDQS[0:7]: Differential input, 40 ohm */
 132         .grp_ddrmode_ctl = 0x00020000,
 133         /* disable DDR pullups */
 134         .grp_ddrpke = 0x00000000,
 135         /* ADDR[00:16], SDBA[0:1]: 40 ohm */
 136         .grp_addds = 0x00000030,
 137         /* CS0/CS1/SDBA2/CKE0/CKE1/SDWE: 40 ohm */
 138         .grp_ctlds = 0x00000030,
 139         /* DATA[00:63]: Differential input, 40 ohm */
 140         .grp_ddrmode = 0x00020000,
 141         .grp_b0ds = 0x00000030,
 142         .grp_b1ds = 0x00000030,
 143         .grp_b2ds = 0x00000030,
 144         .grp_b3ds = 0x00000030,
 145         .grp_b4ds = 0x00000030,
 146         .grp_b5ds = 0x00000030,
 147         .grp_b6ds = 0x00000030,
 148         .grp_b7ds = 0x00000030,
 149 };
 150
 151 /* MT41K64M16JT-125 (1Gb density) */
 152 static struct mx6_ddr3_cfg mt41k64m16jt_125 = {
 153         .mem_speed = 1600,
 154         .density = 1,
 155         .width = 16,
 156         .banks = 8,
 157         .rowaddr = 13,
 158         .coladdr = 10,
 159         .pagesz = 2,
 160         .trcd = 1375,
 161         .trcmin = 4875,
 162         .trasmin = 3500,
 163 };
 164
 165 /* MT41K128M16JT-125 (2Gb density) */
 166 static struct mx6_ddr3_cfg mt41k128m16jt_125 = {
 167         .mem_speed = 1600,
 168         .density = 2,
 169         .width = 16,
 170         .banks = 8,
 171         .rowaddr = 14,
 172         .coladdr = 10,
 173         .pagesz = 2,
 174         .trcd = 1375,
 175         .trcmin = 4875,
 176         .trasmin = 3500,
 177 };
 178
 179 /* MT41K256M16HA-125 (4Gb density) */
 180 static struct mx6_ddr3_cfg mt41k256m16ha_125 = {
 181         .mem_speed = 1600,
 182         .density = 4,
 183         .width = 16,
 184         .banks = 8,
 185         .rowaddr = 15,
 186         .coladdr = 10,
 187         .pagesz = 2,
 188         .trcd = 1375,
 189         .trcmin = 4875,
 190         .trasmin = 3500,
 191 };
 192
 193 /* MT41K512M16HA-125 (8Gb density) */
 194 static struct mx6_ddr3_cfg mt41k512m16ha_125 = {
 195         .mem_speed = 1600,
 196         .density = 8,
 197         .width = 16,
 198         .banks = 8,
 199         .rowaddr = 16,
 200         .coladdr = 10,
 201         .pagesz = 2,
 202         .trcd = 1375,
 203         .trcmin = 4875,
 204         .trasmin = 3500,
 205 };
 206
 207 /*
 208  * calibration - these are the various CPU/DDR3 combinations we support
 209  */
 210 static struct mx6_mmdc_calibration mx6sdl_64x16_mmdc_calib = {
 211         /* write leveling calibration determine */
 212         .p0_mpwldectrl0 = 0x004C004E,
 213         .p0_mpwldectrl1 = 0x00440044,
 214         /* Read DQS Gating calibration */
 215         .p0_mpdgctrl0 = 0x42440247,
 216         .p0_mpdgctrl1 = 0x02310232,
 217         /* Read Calibration: DQS delay relative to DQ read access */
 218         .p0_mprddlctl = 0x45424746,
 219         /* Write Calibration: DQ/DM delay relative to DQS write access */
 220         .p0_mpwrdlctl = 0x33382C31,
 221 };
 222
 223 static struct mx6_mmdc_calibration mx6dq_256x16_mmdc_calib = {
 224         /* write leveling calibration determine */
 225         .p0_mpwldectrl0 = 0x001B0016,
 226         .p0_mpwldectrl1 = 0x000C000E,
 227         /* Read DQS Gating calibration */
 228         .p0_mpdgctrl0 = 0x4324033A,
 229         .p0_mpdgctrl1 = 0x00000000,
 230         /* Read Calibration: DQS delay relative to DQ read access */
 231         .p0_mprddlctl = 0x40403438,
 232         /* Write Calibration: DQ/DM delay relative to DQS write access */
 233         .p0_mpwrdlctl = 0x40403D36,
 234 };
 235
 236 static struct mx6_mmdc_calibration mx6sdl_256x16_mmdc_calib = {
 237         /* write leveling calibration determine */
 238         .p0_mpwldectrl0 = 0x00420043,
 239         .p0_mpwldectrl1 = 0x0016001A,
 240         /* Read DQS Gating calibration */
 241         .p0_mpdgctrl0 = 0x4238023B,
 242         .p0_mpdgctrl1 = 0x00000000,
 243         /* Read Calibration: DQS delay relative to DQ read access */
 244         .p0_mprddlctl = 0x40404849,
 245         /* Write Calibration: DQ/DM delay relative to DQS write access */
 246         .p0_mpwrdlctl = 0x40402E2F,
 247 };
 248
 249 static struct mx6_mmdc_calibration mx6dq_128x32_mmdc_calib = {
 250         /* write leveling calibration determine */
 251         .p0_mpwldectrl0 = 0x00190017,
 252         .p0_mpwldectrl1 = 0x00140026,
 253         /* Read DQS Gating calibration */
 254         .p0_mpdgctrl0 = 0x43380347,
 255         .p0_mpdgctrl1 = 0x433C034D,
 256         /* Read Calibration: DQS delay relative to DQ read access */
 257         .p0_mprddlctl = 0x3C313539,
 258         /* Write Calibration: DQ/DM delay relative to DQS write access */
 259         .p0_mpwrdlctl = 0x36393C39,
 260 };
 261
 262 static struct mx6_mmdc_calibration mx6sdl_128x32_mmdc_calib = {
 263         /* write leveling calibration determine */
 264         .p0_mpwldectrl0 = 0x003C003C,
 265         .p0_mpwldectrl1 = 0x001F002A,
 266         /* Read DQS Gating calibration */
 267         .p0_mpdgctrl0 = 0x42410244,
 268         .p0_mpdgctrl1 = 0x4234023A,
 269         /* Read Calibration: DQS delay relative to DQ read access */
 270         .p0_mprddlctl = 0x484A4C4B,
 271         /* Write Calibration: DQ/DM delay relative to DQS write access */
 272         .p0_mpwrdlctl = 0x33342B32,
 273 };
 274
 275 static struct mx6_mmdc_calibration mx6dq_128x64_mmdc_calib = {
 276         /* write leveling calibration determine */
 277         .p0_mpwldectrl0 = 0x00190017,
 278         .p0_mpwldectrl1 = 0x00140026,
 279         .p1_mpwldectrl0 = 0x0021001C,
 280         .p1_mpwldectrl1 = 0x0011001D,
 281         /* Read DQS Gating calibration */
 282         .p0_mpdgctrl0 = 0x43380347,
 283         .p0_mpdgctrl1 = 0x433C034D,
 284         .p1_mpdgctrl0 = 0x032C0324,
 285         .p1_mpdgctrl1 = 0x03310232,
 286         /* Read Calibration: DQS delay relative to DQ read access */
 287         .p0_mprddlctl = 0x3C313539,
 288         .p1_mprddlctl = 0x37343141,
 289         /* Write Calibration: DQ/DM delay relative to DQS write access */
 290         .p0_mpwrdlctl = 0x36393C39,
 291         .p1_mpwrdlctl = 0x42344438,
 292 };
 293
 294 static struct mx6_mmdc_calibration mx6sdl_128x64_mmdc_calib = {
 295         /* write leveling calibration determine */
 296         .p0_mpwldectrl0 = 0x003C003C,
 297         .p0_mpwldectrl1 = 0x001F002A,
 298         .p1_mpwldectrl0 = 0x00330038,
 299         .p1_mpwldectrl1 = 0x0022003F,
 300         /* Read DQS Gating calibration */
 301         .p0_mpdgctrl0 = 0x42410244,
 302         .p0_mpdgctrl1 = 0x4234023A,
 303         .p1_mpdgctrl0 = 0x022D022D,
 304         .p1_mpdgctrl1 = 0x021C0228,
 305         /* Read Calibration: DQS delay relative to DQ read access */
 306         .p0_mprddlctl = 0x484A4C4B,
 307         .p1_mprddlctl = 0x4B4D4E4B,
 308         /* Write Calibration: DQ/DM delay relative to DQS write access */
 309         .p0_mpwrdlctl = 0x33342B32,
 310         .p1_mpwrdlctl = 0x3933332B,
 311 };
 312
 313 static struct mx6_mmdc_calibration mx6dq_256x32_mmdc_calib = {
 314         /* write leveling calibration determine */
 315         .p0_mpwldectrl0 = 0x001E001A,
 316         .p0_mpwldectrl1 = 0x0026001F,
 317         /* Read DQS Gating calibration */
 318         .p0_mpdgctrl0 = 0x43370349,
 319         .p0_mpdgctrl1 = 0x032D0327,
 320         /* Read Calibration: DQS delay relative to DQ read access */
 321         .p0_mprddlctl = 0x3D303639,
 322         /* Write Calibration: DQ/DM delay relative to DQS write access */
 323         .p0_mpwrdlctl = 0x32363934,
 324 };
 325
 326 static struct mx6_mmdc_calibration mx6sdl_256x32_mmdc_calib = {
 327         /* write leveling calibration determine */
 328         .p0_mpwldectrl0 = 0X00480047,
 329         .p0_mpwldectrl1 = 0X003D003F,
 330         /* Read DQS Gating calibration */
 331         .p0_mpdgctrl0 = 0X423E0241,
 332         .p0_mpdgctrl1 = 0X022B022C,
 333         /* Read Calibration: DQS delay relative to DQ read access */
 334         .p0_mprddlctl = 0X49454A4A,
 335         /* Write Calibration: DQ/DM delay relative to DQS write access */
 336         .p0_mpwrdlctl = 0X2E372C32,
 337 };
 338
 339 static struct mx6_mmdc_calibration mx6dq_256x64_mmdc_calib = {
 340         /* write leveling calibration determine */
 341         .p0_mpwldectrl0 = 0X00220021,
 342         .p0_mpwldectrl1 = 0X00200030,
 343         .p1_mpwldectrl0 = 0X002D0027,
 344         .p1_mpwldectrl1 = 0X00150026,
 345         /* Read DQS Gating calibration */
 346         .p0_mpdgctrl0 = 0x43330342,
 347         .p0_mpdgctrl1 = 0x0339034A,
 348         .p1_mpdgctrl0 = 0x032F0325,
 349         .p1_mpdgctrl1 = 0x032F022E,
 350         /* Read Calibration: DQS delay relative to DQ read access */
 351         .p0_mprddlctl = 0X3A2E3437,
 352         .p1_mprddlctl = 0X35312F3F,
 353         /* Write Calibration: DQ/DM delay relative to DQS write access */
 354         .p0_mpwrdlctl = 0X33363B37,
 355         .p1_mpwrdlctl = 0X40304239,
 356 };
 357
 358 static struct mx6_mmdc_calibration mx6dq_512x32_mmdc_calib = {
 359         /* write leveling calibration determine */
 360         .p0_mpwldectrl0 = 0x002A0025,
 361         .p0_mpwldectrl1 = 0x003A002A,
 362         /* Read DQS Gating calibration */
 363         .p0_mpdgctrl0 = 0x43430356,
 364         .p0_mpdgctrl1 = 0x033C0335,
 365         /* Read Calibration: DQS delay relative to DQ read access */
 366         .p0_mprddlctl = 0x4B373F42,
 367         /* Write Calibration: DQ/DM delay relative to DQS write access */
 368         .p0_mpwrdlctl = 0x303E3C36,
 369 };
 370
 371 static void spl_dram_init(int width, int size_mb, int board_model)
 372 {
 373         struct mx6_ddr3_cfg *mem = NULL;
 374         struct mx6_mmdc_calibration *calib = NULL;
 375         struct mx6_ddr_sysinfo sysinfo = {
 376                 /* width of data bus:0=16,1=32,2=64 */
 377                 .dsize = width/32,
 378                 /* config for full 4GB range so that get_mem_size() works */
 379                 .cs_density = 32, /* 32Gb per CS */
 380                 /* single chip select */
 381                 .ncs = 1,
 382                 .cs1_mirror = 0,
 383                 .rtt_wr = 1 /*DDR3_RTT_60_OHM*/,        /* RTT_Wr = RZQ/4 */
 384 #ifdef RTT_NOM_120OHM
 385                 .rtt_nom = 2 /*DDR3_RTT_120_OHM*/,      /* RTT_Nom = RZQ/2 */
 386 #else
 387                 .rtt_nom = 1 /*DDR3_RTT_60_OHM*/,       /* RTT_Nom = RZQ/4 */
 388 #endif
 389                 .walat = 1,     /* Write additional latency */
 390                 .ralat = 5,     /* Read additional latency */
 391                 .mif3_mode = 3, /* Command prediction working mode */
 392                 .bi_on = 1,     /* Bank interleaving enabled */
 393                 .sde_to_rst = 0x10,     /* 14 cycles, 200us (JEDEC default) */
 394                 .rst_to_cke = 0x23,     /* 33 cycles, 500us (JEDEC default) */
 395                 .pd_fast_exit = 1, /* enable precharge power-down fast exit */
 396                 .ddr_type = DDR_TYPE_DDR3,
 397         };
 398
 399         /*
 400          * MMDC Calibration requires the following data:
 401          *   mx6_mmdc_calibration - board-specific calibration (routing delays)
 402          *      these calibration values depend on board routing, SoC, and DDR
 403          *   mx6_ddr_sysinfo - board-specific memory architecture (width/cs/etc)
 404          *   mx6_ddr_cfg - chip specific timing/layout details
 405          */
 406         if (width == 16 && size_mb == 128) {
 407                 mem = &mt41k64m16jt_125;
 408                 if (is_cpu_type(MXC_CPU_MX6Q))
 409                         ;
 410                 else
 411                         calib = &mx6sdl_64x16_mmdc_calib;
 412                 debug("1gB density\n");
 413         } else if (width == 16 && size_mb == 256) {
 414                 /* 1x 2Gb density chip - same calib as 2x 2Gb */
 415                 mem = &mt41k128m16jt_125;
 416                 if (is_cpu_type(MXC_CPU_MX6Q))
 417                         calib = &mx6dq_128x32_mmdc_calib;
 418                 else
 419                         calib = &mx6sdl_128x32_mmdc_calib;
 420                 debug("2gB density\n");
 421         } else if (width == 16 && size_mb == 512) {
 422                 mem = &mt41k256m16ha_125;
 423                 if (is_cpu_type(MXC_CPU_MX6Q))
 424                         calib = &mx6dq_256x16_mmdc_calib;
 425                 else
 426                         calib = &mx6sdl_256x16_mmdc_calib;
 427                 debug("4gB density\n");
 428         } else if (width == 32 && size_mb == 256) {
 429                 /* Same calib as width==16, size==128 */
 430                 mem = &mt41k64m16jt_125;
 431                 if (is_cpu_type(MXC_CPU_MX6Q))
 432                         ;
 433                 else
 434                         calib = &mx6sdl_64x16_mmdc_calib;
 435                 debug("1gB density\n");
 436         } else if (width == 32 && size_mb == 512) {
 437                 mem = &mt41k128m16jt_125;
 438                 if (is_cpu_type(MXC_CPU_MX6Q))
 439                         calib = &mx6dq_128x32_mmdc_calib;
 440                 else
 441                         calib = &mx6sdl_128x32_mmdc_calib;
 442                 debug("2gB density\n");
 443         }  else if (width == 32 && size_mb == 1024) {
 444                 mem = &mt41k256m16ha_125;
 445                 if (is_cpu_type(MXC_CPU_MX6Q))
 446                         calib = &mx6dq_256x32_mmdc_calib;
 447                 else
 448                         calib = &mx6sdl_256x32_mmdc_calib;
 449                 debug("4gB density\n");
 450         } else if (width == 32 && size_mb == 2048) {
 451                 mem = &mt41k512m16ha_125;
 452                 if (is_cpu_type(MXC_CPU_MX6Q))
 453                         calib = &mx6dq_512x32_mmdc_calib;
 454                 debug("8gB density\n");
 455         } else if (width == 64 && size_mb == 512) {
 456                 mem = &mt41k64m16jt_125;
 457                 debug("1gB density\n");
 458         } else if (width == 64 && size_mb == 1024) {
 459                 mem = &mt41k128m16jt_125;
 460                 if (is_cpu_type(MXC_CPU_MX6Q))
 461                         calib = &mx6dq_128x64_mmdc_calib;
 462                 else
 463                         calib = &mx6sdl_128x64_mmdc_calib;
 464                 debug("2gB density\n");
 465         } else if (width == 64 && size_mb == 2048) {
 466                 mem = &mt41k256m16ha_125;
 467                 if (is_cpu_type(MXC_CPU_MX6Q))
 468                         calib = &mx6dq_256x64_mmdc_calib;
 469                 debug("4gB density\n");
 470         }
 471
 472         if (!(mem && calib)) {
 473                 puts("Error: Invalid Calibration/Board Configuration\n");
 474                 printf("MEM    : %s\n", mem ? "OKAY" : "NULL");
 475                 printf("CALIB  : %s\n", calib ? "OKAY" : "NULL");
 476                 printf("CPUTYPE: %s\n",
 477                        is_cpu_type(MXC_CPU_MX6Q) ? "IMX6Q" : "IMX6DL");
 478                 printf("SIZE_MB: %d\n", size_mb);
 479                 printf("WIDTH  : %d\n", width);
 480                 hang();
 481         }
 482
 483         if (is_cpu_type(MXC_CPU_MX6Q))
 484                 mx6dq_dram_iocfg(width, &mx6dq_ddr_ioregs,
 485                                  &mx6dq_grp_ioregs);
 486         else
 487                 mx6sdl_dram_iocfg(width, &mx6sdl_ddr_ioregs,
 488                                   &mx6sdl_grp_ioregs);
 489         mx6_dram_cfg(&sysinfo, calib, mem);
 490 }
 491
 492 static void ccgr_init(void)
 493 {
 494         struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 495
 496         writel(0x00C03F3F, &ccm->CCGR0);
 497         writel(0x0030FC03, &ccm->CCGR1);
 498         writel(0x0FFFC000, &ccm->CCGR2);
 499         writel(0x3FF00000, &ccm->CCGR3);
 500         writel(0xFFFFF300, &ccm->CCGR4);        /* enable NAND/GPMI/BCH clks */
 501         writel(0x0F0000C3, &ccm->CCGR5);
 502         writel(0x000003FF, &ccm->CCGR6);
 503 }
 504
 505 static void gpr_init(void)
 506 {
 507         struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
 508
 509         /* enable AXI cache for VDOA/VPU/IPU */
 510         writel(0xF00000CF, &iomux->gpr[4]);
 511         /* set IPU AXI-id0 Qos=0xf(bypass) AXI-id1 Qos=0x7 */
 512         writel(0x007F007F, &iomux->gpr[6]);
 513         writel(0x007F007F, &iomux->gpr[7]);
 514 }
 515
 516 /*
 517  * called from C runtime startup code (arch/arm/lib/crt0.S:_main)
 518  * - we have a stack and a place to store GD, both in SRAM
 519  * - no variable global data is available
 520  */
 521 void board_init_f(ulong dummy)
 522 {
 523         struct ventana_board_info ventana_info;
 524         int board_model;
 525
 526         /* setup clock gating */
 527         ccgr_init();
 528
 529         /* setup AIPS and disable watchdog */
 530         arch_cpu_init();
 531
 532         /* setup AXI */
 533         gpr_init();
 534
 535         /* iomux and setup of i2c */
 536         setup_iomux_uart();
 537         setup_ventana_i2c();
 538
 539         /* setup GP timer */
 540         timer_init();
 541
 542         /* UART clocks enabled and gd valid - init serial console */
 543         preloader_console_init();
 544
 545         /* read/validate EEPROM info to determine board model and SDRAM cfg */
 546         board_model = read_eeprom(CONFIG_I2C_GSC, &ventana_info);
 547
 548         /* configure model-specific gpio */
 549         setup_iomux_gpio(board_model, &ventana_info);
 550
 551         /* provide some some default: 32bit 128MB */
 552         if (GW_UNKNOWN == board_model)
 553                 hang();
 554
 555         /* configure MMDC for SDRAM width/size and per-model calibration */
 556         spl_dram_init(8 << ventana_info.sdram_width,
 557                       16 << ventana_info.sdram_size,
 558                       board_model);
 559
 560         /* Clear the BSS. */
 561         memset(__bss_start, 0, __bss_end - __bss_start);
 562 }
 563
 564 /* called from board_init_r after gd setup if CONFIG_SPL_BOARD_INIT defined */
 565 /* its our chance to print info about boot device */
 566 void spl_board_init(void)
 567 {
 568         /* determine boot device from SRC_SBMR1 (BOOT_CFG[4:1]) or SRC_GPR9 */
 569         u32 boot_device = spl_boot_device();
 570
 571         switch (boot_device) {
 572         case BOOT_DEVICE_MMC1:
 573                 puts("Booting from MMC\n");
 574                 break;
 575         case BOOT_DEVICE_NAND:
 576                 puts("Booting from NAND\n");
 577                 break;
 578         case BOOT_DEVICE_SATA:
 579                 puts("Booting from SATA\n");
 580                 break;
 581         default:
 582                 puts("Unknown boot device\n");
 583         }
 584
 585         /* PMIC init */
 586         setup_pmic();
 587 }
 588
 589 #ifdef CONFIG_SPL_OS_BOOT
 590 /* return 1 if we wish to boot to uboot vs os (falcon mode) */
 591 int spl_start_uboot(void)
 592 {
 593         unsigned char ret = 1;
 594
 595         debug("%s\n", __func__);
 596 #ifdef CONFIG_SPL_ENV_SUPPORT
 597         env_init();
 598         env_relocate_spec();
 599         debug("boot_os=%s\n", getenv("boot_os"));
 600         if (getenv_yesno("boot_os") == 1)
 601                 ret = 0;
 602 #else
 603         /* use i2c-0:0x50:0x00 for falcon boot mode (0=linux, else uboot) */
 604         i2c_set_bus_num(0);
 605         gsc_i2c_read(0x50, 0x0, 1, &ret, 1);
 606 #endif
 607         if (!ret)
 608                 gsc_boot_wd_disable();
 609
 610         debug("%s booting %s\n", __func__, ret ? "uboot" : "linux");
 611         return ret;
 612 }
 613 #endif