board/gateworks/gw_ventana/gw_ventana_spl.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2014 Gateworks Corporation
   4  * Author: Tim Harvey <tharvey@gateworks.com>
   5  */
   6
   7 #include <common.h>
   8 #include <env.h>
   9 #include <gsc.h>
  10 #include <hang.h>
  11 #include <i2c.h>
  12 #include <init.h>
  13 #include <spl.h>
  14 #include <asm/arch/crm_regs.h>
  15 #include <asm/arch/mx6-ddr.h>
  16 #include <asm/arch/mx6-pins.h>
  17 #include <asm/arch/sys_proto.h>
  18 #include <asm/mach-imx/mxc_i2c.h>
  19 #include <linux/delay.h>
  20 #include <power/mp5416.h>
  21 #include <power/pmic.h>
  22 #include <power/pfuze100_pmic.h>
  23 #include <power/ltc3676_pmic.h>
  24
  25 #include "common.h"
  26
  27 #define RTT_NOM_120OHM /* use 120ohm Rtt_nom vs 60ohm (lower power) */
  28 #define GSC_EEPROM_DDR_SIZE     0x2B    /* enum (512,1024,2048) MB */
  29 #define GSC_EEPROM_DDR_WIDTH    0x2D    /* enum (32,64) bit */
  30
  31 /* configure MX6Q/DUAL mmdc DDR io registers */
  32 struct mx6dq_iomux_ddr_regs mx6dq_ddr_ioregs = {
  33         /* SDCLK[0:1], CAS, RAS, Reset: Differential input, 40ohm */
  34         .dram_sdclk_0 = 0x00020030,
  35         .dram_sdclk_1 = 0x00020030,
  36         .dram_cas = 0x00020030,
  37         .dram_ras = 0x00020030,
  38         .dram_reset = 0x00020030,
  39         /* SDCKE[0:1]: 100k pull-up */
  40         .dram_sdcke0 = 0x00003000,
  41         .dram_sdcke1 = 0x00003000,
  42         /* SDBA2: pull-up disabled */
  43         .dram_sdba2 = 0x00000000,
  44         /* SDODT[0:1]: 100k pull-up, 40 ohm */
  45         .dram_sdodt0 = 0x00003030,
  46         .dram_sdodt1 = 0x00003030,
  47         /* SDQS[0:7]: Differential input, 40 ohm */
  48         .dram_sdqs0 = 0x00000030,
  49         .dram_sdqs1 = 0x00000030,
  50         .dram_sdqs2 = 0x00000030,
  51         .dram_sdqs3 = 0x00000030,
  52         .dram_sdqs4 = 0x00000030,
  53         .dram_sdqs5 = 0x00000030,
  54         .dram_sdqs6 = 0x00000030,
  55         .dram_sdqs7 = 0x00000030,
  56
  57         /* DQM[0:7]: Differential input, 40 ohm */
  58         .dram_dqm0 = 0x00020030,
  59         .dram_dqm1 = 0x00020030,
  60         .dram_dqm2 = 0x00020030,
  61         .dram_dqm3 = 0x00020030,
  62         .dram_dqm4 = 0x00020030,
  63         .dram_dqm5 = 0x00020030,
  64         .dram_dqm6 = 0x00020030,
  65         .dram_dqm7 = 0x00020030,
  66 };
  67
  68 /* configure MX6Q/DUAL mmdc GRP io registers */
  69 struct mx6dq_iomux_grp_regs mx6dq_grp_ioregs = {
  70         /* DDR3 */
  71         .grp_ddr_type = 0x000c0000,
  72         .grp_ddrmode_ctl = 0x00020000,
  73         /* disable DDR pullups */
  74         .grp_ddrpke = 0x00000000,
  75         /* ADDR[00:16], SDBA[0:1]: 40 ohm */
  76         .grp_addds = 0x00000030,
  77         /* CS0/CS1/SDBA2/CKE0/CKE1/SDWE: 40 ohm */
  78         .grp_ctlds = 0x00000030,
  79         /* DATA[00:63]: Differential input, 40 ohm */
  80         .grp_ddrmode = 0x00020000,
  81         .grp_b0ds = 0x00000030,
  82         .grp_b1ds = 0x00000030,
  83         .grp_b2ds = 0x00000030,
  84         .grp_b3ds = 0x00000030,
  85         .grp_b4ds = 0x00000030,
  86         .grp_b5ds = 0x00000030,
  87         .grp_b6ds = 0x00000030,
  88         .grp_b7ds = 0x00000030,
  89 };
  90
  91 /* configure MX6SOLO/DUALLITE mmdc DDR io registers */
  92 struct mx6sdl_iomux_ddr_regs mx6sdl_ddr_ioregs = {
  93         /* SDCLK[0:1], CAS, RAS, Reset: Differential input, 40ohm */
  94         .dram_sdclk_0 = 0x00020030,
  95         .dram_sdclk_1 = 0x00020030,
  96         .dram_cas = 0x00020030,
  97         .dram_ras = 0x00020030,
  98         .dram_reset = 0x00020030,
  99         /* SDCKE[0:1]: 100k pull-up */
 100         .dram_sdcke0 = 0x00003000,
 101         .dram_sdcke1 = 0x00003000,
 102         /* SDBA2: pull-up disabled */
 103         .dram_sdba2 = 0x00000000,
 104         /* SDODT[0:1]: 100k pull-up, 40 ohm */
 105         .dram_sdodt0 = 0x00003030,
 106         .dram_sdodt1 = 0x00003030,
 107         /* SDQS[0:7]: Differential input, 40 ohm */
 108         .dram_sdqs0 = 0x00000030,
 109         .dram_sdqs1 = 0x00000030,
 110         .dram_sdqs2 = 0x00000030,
 111         .dram_sdqs3 = 0x00000030,
 112         .dram_sdqs4 = 0x00000030,
 113         .dram_sdqs5 = 0x00000030,
 114         .dram_sdqs6 = 0x00000030,
 115         .dram_sdqs7 = 0x00000030,
 116
 117         /* DQM[0:7]: Differential input, 40 ohm */
 118         .dram_dqm0 = 0x00020030,
 119         .dram_dqm1 = 0x00020030,
 120         .dram_dqm2 = 0x00020030,
 121         .dram_dqm3 = 0x00020030,
 122         .dram_dqm4 = 0x00020030,
 123         .dram_dqm5 = 0x00020030,
 124         .dram_dqm6 = 0x00020030,
 125         .dram_dqm7 = 0x00020030,
 126 };
 127
 128 /* configure MX6SOLO/DUALLITE mmdc GRP io registers */
 129 struct mx6sdl_iomux_grp_regs mx6sdl_grp_ioregs = {
 130         /* DDR3 */
 131         .grp_ddr_type = 0x000c0000,
 132         /* SDQS[0:7]: Differential input, 40 ohm */
 133         .grp_ddrmode_ctl = 0x00020000,
 134         /* disable DDR pullups */
 135         .grp_ddrpke = 0x00000000,
 136         /* ADDR[00:16], SDBA[0:1]: 40 ohm */
 137         .grp_addds = 0x00000030,
 138         /* CS0/CS1/SDBA2/CKE0/CKE1/SDWE: 40 ohm */
 139         .grp_ctlds = 0x00000030,
 140         /* DATA[00:63]: Differential input, 40 ohm */
 141         .grp_ddrmode = 0x00020000,
 142         .grp_b0ds = 0x00000030,
 143         .grp_b1ds = 0x00000030,
 144         .grp_b2ds = 0x00000030,
 145         .grp_b3ds = 0x00000030,
 146         .grp_b4ds = 0x00000030,
 147         .grp_b5ds = 0x00000030,
 148         .grp_b6ds = 0x00000030,
 149         .grp_b7ds = 0x00000030,
 150 };
 151
 152 /* MT41K64M16JT-125 (1Gb density) */
 153 static struct mx6_ddr3_cfg mt41k64m16jt_125 = {
 154         .mem_speed = 1600,
 155         .density = 1,
 156         .width = 16,
 157         .banks = 8,
 158         .rowaddr = 13,
 159         .coladdr = 10,
 160         .pagesz = 2,
 161         .trcd = 1375,
 162         .trcmin = 4875,
 163         .trasmin = 3500,
 164 };
 165
 166 /* MT41K128M16JT-125 (2Gb density) */
 167 static struct mx6_ddr3_cfg mt41k128m16jt_125 = {
 168         .mem_speed = 1600,
 169         .density = 2,
 170         .width = 16,
 171         .banks = 8,
 172         .rowaddr = 14,
 173         .coladdr = 10,
 174         .pagesz = 2,
 175         .trcd = 1375,
 176         .trcmin = 4875,
 177         .trasmin = 3500,
 178 };
 179
 180 /* MT41K256M16HA-125 (4Gb density) */
 181 static struct mx6_ddr3_cfg mt41k256m16ha_125 = {
 182         .mem_speed = 1600,
 183         .density = 4,
 184         .width = 16,
 185         .banks = 8,
 186         .rowaddr = 15,
 187         .coladdr = 10,
 188         .pagesz = 2,
 189         .trcd = 1375,
 190         .trcmin = 4875,
 191         .trasmin = 3500,
 192 };
 193
 194 /* MT41K512M16HA-125 (8Gb density) */
 195 static struct mx6_ddr3_cfg mt41k512m16ha_125 = {
 196         .mem_speed = 1600,
 197         .density = 8,
 198         .width = 16,
 199         .banks = 8,
 200         .rowaddr = 16,
 201         .coladdr = 10,
 202         .pagesz = 2,
 203         .trcd = 1375,
 204         .trcmin = 4875,
 205         .trasmin = 3500,
 206 };
 207
 208 /*
 209  * calibration - these are the various CPU/DDR3 combinations we support
 210  */
 211 static struct mx6_mmdc_calibration mx6sdl_64x16_mmdc_calib = {
 212         /* write leveling calibration determine */
 213         .p0_mpwldectrl0 = 0x004C004E,
 214         .p0_mpwldectrl1 = 0x00440044,
 215         /* Read DQS Gating calibration */
 216         .p0_mpdgctrl0 = 0x42440247,
 217         .p0_mpdgctrl1 = 0x02310232,
 218         /* Read Calibration: DQS delay relative to DQ read access */
 219         .p0_mprddlctl = 0x45424746,
 220         /* Write Calibration: DQ/DM delay relative to DQS write access */
 221         .p0_mpwrdlctl = 0x33382C31,
 222 };
 223
 224 /* TODO: update with calibrated values */
 225 static struct mx6_mmdc_calibration mx6dq_64x64_mmdc_calib = {
 226         /* write leveling calibration determine */
 227         .p0_mpwldectrl0 = 0x00190017,
 228         .p0_mpwldectrl1 = 0x00140026,
 229         .p1_mpwldectrl0 = 0x0021001C,
 230         .p1_mpwldectrl1 = 0x0011001D,
 231         /* Read DQS Gating calibration */
 232         .p0_mpdgctrl0 = 0x43380347,
 233         .p0_mpdgctrl1 = 0x433C034D,
 234         .p1_mpdgctrl0 = 0x032C0324,
 235         .p1_mpdgctrl1 = 0x03310232,
 236         /* Read Calibration: DQS delay relative to DQ read access */
 237         .p0_mprddlctl = 0x3C313539,
 238         .p1_mprddlctl = 0x37343141,
 239         /* Write Calibration: DQ/DM delay relative to DQS write access */
 240         .p0_mpwrdlctl = 0x36393C39,
 241         .p1_mpwrdlctl = 0x42344438,
 242 };
 243
 244 /* TODO: update with calibrated values */
 245 static struct mx6_mmdc_calibration mx6sdl_64x64_mmdc_calib = {
 246         /* write leveling calibration determine */
 247         .p0_mpwldectrl0 = 0x003C003C,
 248         .p0_mpwldectrl1 = 0x001F002A,
 249         .p1_mpwldectrl0 = 0x00330038,
 250         .p1_mpwldectrl1 = 0x0022003F,
 251         /* Read DQS Gating calibration */
 252         .p0_mpdgctrl0 = 0x42410244,
 253         .p0_mpdgctrl1 = 0x4234023A,
 254         .p1_mpdgctrl0 = 0x022D022D,
 255         .p1_mpdgctrl1 = 0x021C0228,
 256         /* Read Calibration: DQS delay relative to DQ read access */
 257         .p0_mprddlctl = 0x484A4C4B,
 258         .p1_mprddlctl = 0x4B4D4E4B,
 259         /* Write Calibration: DQ/DM delay relative to DQS write access */
 260         .p0_mpwrdlctl = 0x33342B32,
 261         .p1_mpwrdlctl = 0x3933332B,
 262 };
 263
 264 static struct mx6_mmdc_calibration mx6dq_256x16_mmdc_calib = {
 265         /* write leveling calibration determine */
 266         .p0_mpwldectrl0 = 0x001B0016,
 267         .p0_mpwldectrl1 = 0x000C000E,
 268         /* Read DQS Gating calibration */
 269         .p0_mpdgctrl0 = 0x4324033A,
 270         .p0_mpdgctrl1 = 0x00000000,
 271         /* Read Calibration: DQS delay relative to DQ read access */
 272         .p0_mprddlctl = 0x40403438,
 273         /* Write Calibration: DQ/DM delay relative to DQS write access */
 274         .p0_mpwrdlctl = 0x40403D36,
 275 };
 276
 277 static struct mx6_mmdc_calibration mx6sdl_256x16_mmdc_calib = {
 278         /* write leveling calibration determine */
 279         .p0_mpwldectrl0 = 0x00420043,
 280         .p0_mpwldectrl1 = 0x0016001A,
 281         /* Read DQS Gating calibration */
 282         .p0_mpdgctrl0 = 0x4238023B,
 283         .p0_mpdgctrl1 = 0x00000000,
 284         /* Read Calibration: DQS delay relative to DQ read access */
 285         .p0_mprddlctl = 0x40404849,
 286         /* Write Calibration: DQ/DM delay relative to DQS write access */
 287         .p0_mpwrdlctl = 0x40402E2F,
 288 };
 289
 290 static struct mx6_mmdc_calibration mx6dq_128x32_mmdc_calib = {
 291         /* write leveling calibration determine */
 292         .p0_mpwldectrl0 = 0x00190017,
 293         .p0_mpwldectrl1 = 0x00140026,
 294         /* Read DQS Gating calibration */
 295         .p0_mpdgctrl0 = 0x43380347,
 296         .p0_mpdgctrl1 = 0x433C034D,
 297         /* Read Calibration: DQS delay relative to DQ read access */
 298         .p0_mprddlctl = 0x3C313539,
 299         /* Write Calibration: DQ/DM delay relative to DQS write access */
 300         .p0_mpwrdlctl = 0x36393C39,
 301 };
 302
 303 static struct mx6_mmdc_calibration mx6sdl_128x32_mmdc_calib = {
 304         /* write leveling calibration determine */
 305         .p0_mpwldectrl0 = 0x003C003C,
 306         .p0_mpwldectrl1 = 0x001F002A,
 307         /* Read DQS Gating calibration */
 308         .p0_mpdgctrl0 = 0x42410244,
 309         .p0_mpdgctrl1 = 0x4234023A,
 310         /* Read Calibration: DQS delay relative to DQ read access */
 311         .p0_mprddlctl = 0x484A4C4B,
 312         /* Write Calibration: DQ/DM delay relative to DQS write access */
 313         .p0_mpwrdlctl = 0x33342B32,
 314 };
 315
 316 static struct mx6_mmdc_calibration mx6dq_128x64_mmdc_calib = {
 317         /* write leveling calibration determine */
 318         .p0_mpwldectrl0 = 0x00190017,
 319         .p0_mpwldectrl1 = 0x00140026,
 320         .p1_mpwldectrl0 = 0x0021001C,
 321         .p1_mpwldectrl1 = 0x0011001D,
 322         /* Read DQS Gating calibration */
 323         .p0_mpdgctrl0 = 0x43380347,
 324         .p0_mpdgctrl1 = 0x433C034D,
 325         .p1_mpdgctrl0 = 0x032C0324,
 326         .p1_mpdgctrl1 = 0x03310232,
 327         /* Read Calibration: DQS delay relative to DQ read access */
 328         .p0_mprddlctl = 0x3C313539,
 329         .p1_mprddlctl = 0x37343141,
 330         /* Write Calibration: DQ/DM delay relative to DQS write access */
 331         .p0_mpwrdlctl = 0x36393C39,
 332         .p1_mpwrdlctl = 0x42344438,
 333 };
 334
 335 static struct mx6_mmdc_calibration mx6sdl_128x64_mmdc_calib = {
 336         /* write leveling calibration determine */
 337         .p0_mpwldectrl0 = 0x003C003C,
 338         .p0_mpwldectrl1 = 0x001F002A,
 339         .p1_mpwldectrl0 = 0x00330038,
 340         .p1_mpwldectrl1 = 0x0022003F,
 341         /* Read DQS Gating calibration */
 342         .p0_mpdgctrl0 = 0x42410244,
 343         .p0_mpdgctrl1 = 0x4234023A,
 344         .p1_mpdgctrl0 = 0x022D022D,
 345         .p1_mpdgctrl1 = 0x021C0228,
 346         /* Read Calibration: DQS delay relative to DQ read access */
 347         .p0_mprddlctl = 0x484A4C4B,
 348         .p1_mprddlctl = 0x4B4D4E4B,
 349         /* Write Calibration: DQ/DM delay relative to DQS write access */
 350         .p0_mpwrdlctl = 0x33342B32,
 351         .p1_mpwrdlctl = 0x3933332B,
 352 };
 353
 354 static struct mx6_mmdc_calibration mx6dq_256x32_mmdc_calib = {
 355         /* write leveling calibration determine */
 356         .p0_mpwldectrl0 = 0x001E001A,
 357         .p0_mpwldectrl1 = 0x0026001F,
 358         /* Read DQS Gating calibration */
 359         .p0_mpdgctrl0 = 0x43370349,
 360         .p0_mpdgctrl1 = 0x032D0327,
 361         /* Read Calibration: DQS delay relative to DQ read access */
 362         .p0_mprddlctl = 0x3D303639,
 363         /* Write Calibration: DQ/DM delay relative to DQS write access */
 364         .p0_mpwrdlctl = 0x32363934,
 365 };
 366
 367 static struct mx6_mmdc_calibration mx6sdl_256x32_mmdc_calib = {
 368         /* write leveling calibration determine */
 369         .p0_mpwldectrl0 = 0X00480047,
 370         .p0_mpwldectrl1 = 0X003D003F,
 371         /* Read DQS Gating calibration */
 372         .p0_mpdgctrl0 = 0X423E0241,
 373         .p0_mpdgctrl1 = 0X022B022C,
 374         /* Read Calibration: DQS delay relative to DQ read access */
 375         .p0_mprddlctl = 0X49454A4A,
 376         /* Write Calibration: DQ/DM delay relative to DQS write access */
 377         .p0_mpwrdlctl = 0X2E372C32,
 378 };
 379
 380 static struct mx6_mmdc_calibration mx6dq_256x64_mmdc_calib = {
 381         /* write leveling calibration determine */
 382         .p0_mpwldectrl0 = 0X00220021,
 383         .p0_mpwldectrl1 = 0X00200030,
 384         .p1_mpwldectrl0 = 0X002D0027,
 385         .p1_mpwldectrl1 = 0X00150026,
 386         /* Read DQS Gating calibration */
 387         .p0_mpdgctrl0 = 0x43330342,
 388         .p0_mpdgctrl1 = 0x0339034A,
 389         .p1_mpdgctrl0 = 0x032F0325,
 390         .p1_mpdgctrl1 = 0x032F022E,
 391         /* Read Calibration: DQS delay relative to DQ read access */
 392         .p0_mprddlctl = 0X3A2E3437,
 393         .p1_mprddlctl = 0X35312F3F,
 394         /* Write Calibration: DQ/DM delay relative to DQS write access */
 395         .p0_mpwrdlctl = 0X33363B37,
 396         .p1_mpwrdlctl = 0X40304239,
 397 };
 398
 399 static struct mx6_mmdc_calibration mx6sdl_256x64_mmdc_calib = {
 400         /* write leveling calibration determine */
 401         .p0_mpwldectrl0 = 0x0048004A,
 402         .p0_mpwldectrl1 = 0x003F004A,
 403         .p1_mpwldectrl0 = 0x001E0028,
 404         .p1_mpwldectrl1 = 0x002C0043,
 405         /* Read DQS Gating calibration */
 406         .p0_mpdgctrl0 = 0x02250219,
 407         .p0_mpdgctrl1 = 0x01790202,
 408         .p1_mpdgctrl0 = 0x02080208,
 409         .p1_mpdgctrl1 = 0x016C0175,
 410         /* Read Calibration: DQS delay relative to DQ read access */
 411         .p0_mprddlctl = 0x4A4C4D4C,
 412         .p1_mprddlctl = 0x494C4A48,
 413         /* Write Calibration: DQ/DM delay relative to DQS write access */
 414         .p0_mpwrdlctl = 0x403F3437,
 415         .p1_mpwrdlctl = 0x383A3930,
 416 };
 417
 418 static struct mx6_mmdc_calibration mx6sdl_256x64x2_mmdc_calib = {
 419         /* write leveling calibration determine */
 420         .p0_mpwldectrl0 = 0x001F003F,
 421         .p0_mpwldectrl1 = 0x001F001F,
 422         .p1_mpwldectrl0 = 0x001F004E,
 423         .p1_mpwldectrl1 = 0x0059001F,
 424         /* Read DQS Gating calibration */
 425         .p0_mpdgctrl0   = 0x42220225,
 426         .p0_mpdgctrl1   = 0x0213021F,
 427         .p1_mpdgctrl0   = 0x022C0242,
 428         .p1_mpdgctrl1   = 0x022C0244,
 429         /* Read Calibration: DQS delay relative to DQ read access */
 430         .p0_mprddlctl   = 0x474A4C4A,
 431         .p1_mprddlctl   = 0x48494C45,
 432         /* Write Calibration: DQ/DM delay relative to DQS write access */
 433         .p0_mpwrdlctl   = 0x3F3F3F36,
 434         .p1_mpwrdlctl   = 0x3F36363F,
 435 };
 436
 437 static struct mx6_mmdc_calibration mx6sdl_128x64x2_mmdc_calib = {
 438         /* write leveling calibration determine */
 439         .p0_mpwldectrl0 = 0x001F003F,
 440         .p0_mpwldectrl1 = 0x001F001F,
 441         .p1_mpwldectrl0 = 0x001F004E,
 442         .p1_mpwldectrl1 = 0x0059001F,
 443         /* Read DQS Gating calibration */
 444         .p0_mpdgctrl0   = 0x42220225,
 445         .p0_mpdgctrl1   = 0x0213021F,
 446         .p1_mpdgctrl0   = 0x022C0242,
 447         .p1_mpdgctrl1   = 0x022C0244,
 448         /* Read Calibration: DQS delay relative to DQ read access */
 449         .p0_mprddlctl   = 0x474A4C4A,
 450         .p1_mprddlctl   = 0x48494C45,
 451         /* Write Calibration: DQ/DM delay relative to DQS write access */
 452         .p0_mpwrdlctl   = 0x3F3F3F36,
 453         .p1_mpwrdlctl   = 0x3F36363F,
 454 };
 455
 456 static struct mx6_mmdc_calibration mx6dq_512x32_mmdc_calib = {
 457         /* write leveling calibration determine */
 458         .p0_mpwldectrl0 = 0x002A0025,
 459         .p0_mpwldectrl1 = 0x003A002A,
 460         /* Read DQS Gating calibration */
 461         .p0_mpdgctrl0 = 0x43430356,
 462         .p0_mpdgctrl1 = 0x033C0335,
 463         /* Read Calibration: DQS delay relative to DQ read access */
 464         .p0_mprddlctl = 0x4B373F42,
 465         /* Write Calibration: DQ/DM delay relative to DQS write access */
 466         .p0_mpwrdlctl = 0x303E3C36,
 467 };
 468
 469 static struct mx6_mmdc_calibration mx6dq_512x64_mmdc_calib = {
 470         /* write leveling calibration determine */
 471         .p0_mpwldectrl0 = 0x00230020,
 472         .p0_mpwldectrl1 = 0x002F002A,
 473         .p1_mpwldectrl0 = 0x001D0027,
 474         .p1_mpwldectrl1 = 0x00100023,
 475         /* Read DQS Gating calibration */
 476         .p0_mpdgctrl0 = 0x03250339,
 477         .p0_mpdgctrl1 = 0x031C0316,
 478         .p1_mpdgctrl0 = 0x03210331,
 479         .p1_mpdgctrl1 = 0x031C025A,
 480         /* Read Calibration: DQS delay relative to DQ read access */
 481         .p0_mprddlctl = 0x40373C40,
 482         .p1_mprddlctl = 0x3A373646,
 483         /* Write Calibration: DQ/DM delay relative to DQS write access */
 484         .p0_mpwrdlctl = 0x2E353933,
 485         .p1_mpwrdlctl = 0x3C2F3F35,
 486 };
 487
 488 static void spl_dram_init(int width, int size_mb, int board_model)
 489 {
 490         struct mx6_ddr3_cfg *mem = NULL;
 491         struct mx6_mmdc_calibration *calib = NULL;
 492         struct mx6_ddr_sysinfo sysinfo = {
 493                 /* width of data bus:0=16,1=32,2=64 */
 494                 .dsize = width/32,
 495                 /* config for full 4GB range so that get_mem_size() works */
 496                 .cs_density = 32, /* 32Gb per CS */
 497                 /* single chip select */
 498                 .ncs = 1,
 499                 .cs1_mirror = 0,
 500                 .rtt_wr = 1 /*DDR3_RTT_60_OHM*/,        /* RTT_Wr = RZQ/4 */
 501 #ifdef RTT_NOM_120OHM
 502                 .rtt_nom = 2 /*DDR3_RTT_120_OHM*/,      /* RTT_Nom = RZQ/2 */
 503 #else
 504                 .rtt_nom = 1 /*DDR3_RTT_60_OHM*/,       /* RTT_Nom = RZQ/4 */
 505 #endif
 506                 .walat = 1,     /* Write additional latency */
 507                 .ralat = 5,     /* Read additional latency */
 508                 .mif3_mode = 3, /* Command prediction working mode */
 509                 .bi_on = 1,     /* Bank interleaving enabled */
 510                 .sde_to_rst = 0x10,     /* 14 cycles, 200us (JEDEC default) */
 511                 .rst_to_cke = 0x23,     /* 33 cycles, 500us (JEDEC default) */
 512                 .pd_fast_exit = 1, /* enable precharge power-down fast exit */
 513                 .ddr_type = DDR_TYPE_DDR3,
 514                 .refsel = 1,    /* Refresh cycles at 32KHz */
 515                 .refr = 7,      /* 8 refresh commands per refresh cycle */
 516         };
 517
 518         /*
 519          * MMDC Calibration requires the following data:
 520          *   mx6_mmdc_calibration - board-specific calibration (routing delays)
 521          *      these calibration values depend on board routing, SoC, and DDR
 522          *   mx6_ddr_sysinfo - board-specific memory architecture (width/cs/etc)
 523          *   mx6_ddr_cfg - chip specific timing/layout details
 524          */
 525         if (width == 16 && size_mb == 128) {
 526                 mem = &mt41k64m16jt_125;
 527                 if (is_cpu_type(MXC_CPU_MX6Q))
 528                         ;
 529                 else
 530                         calib = &mx6sdl_64x16_mmdc_calib;
 531                 debug("1gB density\n");
 532         } else if (width == 16 && size_mb == 256) {
 533                 /* 1x 2Gb density chip - same calib as 2x 2Gb */
 534                 mem = &mt41k128m16jt_125;
 535                 if (is_cpu_type(MXC_CPU_MX6Q))
 536                         calib = &mx6dq_128x32_mmdc_calib;
 537                 else
 538                         calib = &mx6sdl_128x32_mmdc_calib;
 539                 debug("2gB density\n");
 540         } else if (width == 16 && size_mb == 512) {
 541                 mem = &mt41k256m16ha_125;
 542                 if (is_cpu_type(MXC_CPU_MX6Q))
 543                         calib = &mx6dq_256x16_mmdc_calib;
 544                 else
 545                         calib = &mx6sdl_256x16_mmdc_calib;
 546                 debug("4gB density\n");
 547         } else if (width == 16 && size_mb == 1024) {
 548                 mem = &mt41k512m16ha_125;
 549                 if (is_cpu_type(MXC_CPU_MX6Q))
 550                         calib = &mx6dq_512x32_mmdc_calib;
 551                 debug("8gB density\n");
 552         } else if (width == 32 && size_mb == 256) {
 553                 /* Same calib as width==16, size==128 */
 554                 mem = &mt41k64m16jt_125;
 555                 if (is_cpu_type(MXC_CPU_MX6Q))
 556                         ;
 557                 else
 558                         calib = &mx6sdl_64x16_mmdc_calib;
 559                 debug("1gB density\n");
 560         } else if (width == 32 && size_mb == 512) {
 561                 mem = &mt41k128m16jt_125;
 562                 if (is_cpu_type(MXC_CPU_MX6Q))
 563                         calib = &mx6dq_128x32_mmdc_calib;
 564                 else
 565                         calib = &mx6sdl_128x32_mmdc_calib;
 566                 debug("2gB density\n");
 567         }  else if (width == 32 && size_mb == 1024) {
 568                 mem = &mt41k256m16ha_125;
 569                 if (is_cpu_type(MXC_CPU_MX6Q))
 570                         calib = &mx6dq_256x32_mmdc_calib;
 571                 else
 572                         calib = &mx6sdl_256x32_mmdc_calib;
 573                 debug("4gB density\n");
 574         } else if (width == 32 && size_mb == 2048) {
 575                 mem = &mt41k512m16ha_125;
 576                 if (is_cpu_type(MXC_CPU_MX6Q))
 577                         calib = &mx6dq_512x32_mmdc_calib;
 578                 debug("8gB density\n");
 579         } else if (width == 64 && size_mb == 512) {
 580                 mem = &mt41k64m16jt_125;
 581                 debug("1gB density\n");
 582                 if (is_cpu_type(MXC_CPU_MX6Q))
 583                         calib = &mx6dq_64x64_mmdc_calib;
 584                 else
 585                         calib = &mx6sdl_64x64_mmdc_calib;
 586         } else if (width == 64 && size_mb == 1024) {
 587                 mem = &mt41k128m16jt_125;
 588                 if (is_cpu_type(MXC_CPU_MX6Q))
 589                         calib = &mx6dq_128x64_mmdc_calib;
 590                 else
 591                         calib = &mx6sdl_128x64_mmdc_calib;
 592                 debug("2gB density\n");
 593         } else if (width == 64 && size_mb == 2048) {
 594                 switch(board_model) {
 595                 case GW5905:
 596                         /* 8xMT41K128M16 (2GiB) fly-by mirrored 2-chipsels */
 597                         mem = &mt41k128m16jt_125;
 598                         debug("2gB density - 2 chipsel\n");
 599                         if (!is_cpu_type(MXC_CPU_MX6Q)) {
 600                                 calib = &mx6sdl_128x64x2_mmdc_calib;
 601                                 sysinfo.ncs = 2;
 602                                 sysinfo.cs_density = 10; /* CS0_END=39 */
 603                                 sysinfo.cs1_mirror = 1; /* mirror enabled */
 604                         }
 605                         break;
 606                 default:
 607                         mem = &mt41k256m16ha_125;
 608                         if (is_cpu_type(MXC_CPU_MX6Q))
 609                                 calib = &mx6dq_256x64_mmdc_calib;
 610                         else
 611                                 calib = &mx6sdl_256x64_mmdc_calib;
 612                         debug("4gB density\n");
 613                         break;
 614                 }
 615         } else if (width == 64 && size_mb == 4096) {
 616                 switch(board_model) {
 617                 case GW5903:
 618                         /* 8xMT41K256M16 (4GiB) fly-by mirrored 2-chipsels */
 619                         mem = &mt41k256m16ha_125;
 620                         debug("4gB density - 2 chipsel\n");
 621                         if (!is_cpu_type(MXC_CPU_MX6Q)) {
 622                                 calib = &mx6sdl_256x64x2_mmdc_calib;
 623                                 sysinfo.ncs = 2;
 624                                 sysinfo.cs_density = 18; /* CS0_END=71 */
 625                                 sysinfo.cs1_mirror = 1; /* mirror enabled */
 626                         }
 627                         break;
 628                 default:
 629                         mem = &mt41k512m16ha_125;
 630                         if (is_cpu_type(MXC_CPU_MX6Q))
 631                                 calib = &mx6dq_512x64_mmdc_calib;
 632                         debug("8gB density\n");
 633                         break;
 634                 }
 635         }
 636
 637         if (!(mem && calib)) {
 638                 puts("Error: Invalid Calibration/Board Configuration\n");
 639                 printf("MEM    : %s\n", mem ? "OKAY" : "NULL");
 640                 printf("CALIB  : %s\n", calib ? "OKAY" : "NULL");
 641                 printf("CPUTYPE: %s\n",
 642                        is_cpu_type(MXC_CPU_MX6Q) ? "IMX6Q" : "IMX6DL");
 643                 printf("SIZE_MB: %d\n", size_mb);
 644                 printf("WIDTH  : %d\n", width);
 645                 hang();
 646         }
 647
 648         if (is_cpu_type(MXC_CPU_MX6Q))
 649                 mx6dq_dram_iocfg(width, &mx6dq_ddr_ioregs,
 650                                  &mx6dq_grp_ioregs);
 651         else
 652                 mx6sdl_dram_iocfg(width, &mx6sdl_ddr_ioregs,
 653                                   &mx6sdl_grp_ioregs);
 654         mx6_dram_cfg(&sysinfo, calib, mem);
 655 }
 656
 657 static void ccgr_init(void)
 658 {
 659         struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 660
 661         writel(0x00C03F3F, &ccm->CCGR0);
 662         writel(0x0030FC03, &ccm->CCGR1);
 663         writel(0x0FFFC000, &ccm->CCGR2);
 664         writel(0x3FF00000, &ccm->CCGR3);
 665         writel(0xFFFFF300, &ccm->CCGR4);        /* enable NAND/GPMI/BCH clks */
 666         writel(0x0F0000C3, &ccm->CCGR5);
 667         writel(0x000003FF, &ccm->CCGR6);
 668 }
 669
 670 /* UART2: Serial Console */
 671 static const iomux_v3_cfg_t uart2_pads[] = {
 672         IOMUX_PADS(PAD_SD4_DAT7__UART2_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
 673         IOMUX_PADS(PAD_SD4_DAT4__UART2_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
 674 };
 675
 676 void setup_iomux_uart(void)
 677 {
 678         SETUP_IOMUX_PADS(uart2_pads);
 679 }
 680
 681 /*
 682  * I2C pad configs:
 683  * I2C1: GSC
 684  * I2C2: PMIC,PCIe Switch,Clock,Mezz
 685  * I2C3: Multimedia/Expansion
 686  */
 687 static struct i2c_pads_info mx6q_i2c_pad_info[] = {
 688         {
 689                 .scl = {
 690                         .i2c_mode = MX6Q_PAD_EIM_D21__I2C1_SCL | PC,
 691                         .gpio_mode = MX6Q_PAD_EIM_D21__GPIO3_IO21 | PC,
 692                         .gp = IMX_GPIO_NR(3, 21)
 693                 },
 694                 .sda = {
 695                         .i2c_mode = MX6Q_PAD_EIM_D28__I2C1_SDA | PC,
 696                         .gpio_mode = MX6Q_PAD_EIM_D28__GPIO3_IO28 | PC,
 697                         .gp = IMX_GPIO_NR(3, 28)
 698                 }
 699         }, {
 700                 .scl = {
 701                         .i2c_mode = MX6Q_PAD_KEY_COL3__I2C2_SCL | PC,
 702                         .gpio_mode = MX6Q_PAD_KEY_COL3__GPIO4_IO12 | PC,
 703                         .gp = IMX_GPIO_NR(4, 12)
 704                 },
 705                 .sda = {
 706                         .i2c_mode = MX6Q_PAD_KEY_ROW3__I2C2_SDA | PC,
 707                         .gpio_mode = MX6Q_PAD_KEY_ROW3__GPIO4_IO13 | PC,
 708                         .gp = IMX_GPIO_NR(4, 13)
 709                 }
 710         }, {
 711                 .scl = {
 712                         .i2c_mode = MX6Q_PAD_GPIO_3__I2C3_SCL | PC,
 713                         .gpio_mode = MX6Q_PAD_GPIO_3__GPIO1_IO03 | PC,
 714                         .gp = IMX_GPIO_NR(1, 3)
 715                 },
 716                 .sda = {
 717                         .i2c_mode = MX6Q_PAD_GPIO_6__I2C3_SDA | PC,
 718                         .gpio_mode = MX6Q_PAD_GPIO_6__GPIO1_IO06 | PC,
 719                         .gp = IMX_GPIO_NR(1, 6)
 720                 }
 721         }
 722 };
 723
 724 static struct i2c_pads_info mx6dl_i2c_pad_info[] = {
 725         {
 726                 .scl = {
 727                         .i2c_mode = MX6DL_PAD_EIM_D21__I2C1_SCL | PC,
 728                         .gpio_mode = MX6DL_PAD_EIM_D21__GPIO3_IO21 | PC,
 729                         .gp = IMX_GPIO_NR(3, 21)
 730                 },
 731                 .sda = {
 732                         .i2c_mode = MX6DL_PAD_EIM_D28__I2C1_SDA | PC,
 733                         .gpio_mode = MX6DL_PAD_EIM_D28__GPIO3_IO28 | PC,
 734                         .gp = IMX_GPIO_NR(3, 28)
 735                 }
 736         }, {
 737                 .scl = {
 738                         .i2c_mode = MX6DL_PAD_KEY_COL3__I2C2_SCL | PC,
 739                         .gpio_mode = MX6DL_PAD_KEY_COL3__GPIO4_IO12 | PC,
 740                         .gp = IMX_GPIO_NR(4, 12)
 741                 },
 742                 .sda = {
 743                         .i2c_mode = MX6DL_PAD_KEY_ROW3__I2C2_SDA | PC,
 744                         .gpio_mode = MX6DL_PAD_KEY_ROW3__GPIO4_IO13 | PC,
 745                         .gp = IMX_GPIO_NR(4, 13)
 746                 }
 747         }, {
 748                 .scl = {
 749                         .i2c_mode = MX6DL_PAD_GPIO_3__I2C3_SCL | PC,
 750                         .gpio_mode = MX6DL_PAD_GPIO_3__GPIO1_IO03 | PC,
 751                         .gp = IMX_GPIO_NR(1, 3)
 752                 },
 753                 .sda = {
 754                         .i2c_mode = MX6DL_PAD_GPIO_6__I2C3_SDA | PC,
 755                         .gpio_mode = MX6DL_PAD_GPIO_6__GPIO1_IO06 | PC,
 756                         .gp = IMX_GPIO_NR(1, 6)
 757                 }
 758         }
 759 };
 760
 761 static void setup_ventana_i2c(int i2c)
 762 {
 763         struct i2c_pads_info *p;
 764
 765         if (is_cpu_type(MXC_CPU_MX6Q))
 766                 p = &mx6q_i2c_pad_info[i2c];
 767         else
 768                 p = &mx6dl_i2c_pad_info[i2c];
 769
 770         setup_i2c(i2c, CONFIG_SYS_I2C_SPEED, 0x7f, p);
 771 }
 772
 773 /* setup board specific PMIC */
 774 void setup_pmic(void)
 775 {
 776         struct pmic *p;
 777         const int i2c_pmic = 1;
 778         u32 reg;
 779         char rev;
 780         int i;
 781
 782         /* determine board revision */
 783         rev = 'A';
 784         for (i = sizeof(ventana_info.model) - 1; i > 0; i--) {
 785                 if (ventana_info.model[i] >= 'A') {
 786                         rev = ventana_info.model[i];
 787                         break;
 788                 }
 789         }
 790
 791         i2c_set_bus_num(i2c_pmic);
 792
 793         /* configure PFUZE100 PMIC */
 794         if (!i2c_probe(CFG_POWER_PFUZE100_I2C_ADDR)) {
 795                 debug("probed PFUZE100@0x%x\n", CFG_POWER_PFUZE100_I2C_ADDR);
 796                 power_pfuze100_init(i2c_pmic);
 797                 p = pmic_get("PFUZE100");
 798                 if (p && !pmic_probe(p)) {
 799                         pmic_reg_read(p, PFUZE100_DEVICEID, &reg);
 800                         printf("PMIC:  PFUZE100 ID=0x%02x\n", reg);
 801
 802                         /* Set VGEN1 to 1.5V and enable */
 803                         pmic_reg_read(p, PFUZE100_VGEN1VOL, &reg);
 804                         reg &= ~(LDO_VOL_MASK);
 805                         reg |= (LDOA_1_50V | LDO_EN);
 806                         pmic_reg_write(p, PFUZE100_VGEN1VOL, reg);
 807
 808                         /* Set SWBST to 5.0V and enable */
 809                         pmic_reg_read(p, PFUZE100_SWBSTCON1, &reg);
 810                         reg &= ~(SWBST_MODE_MASK | SWBST_VOL_MASK);
 811                         reg |= (SWBST_5_00V | (SWBST_MODE_AUTO << SWBST_MODE_SHIFT));
 812                         pmic_reg_write(p, PFUZE100_SWBSTCON1, reg);
 813
 814                         if (board_type == GW54xx && (rev == 'G')) {
 815                                 /* Disable VGEN5 */
 816                                 pmic_reg_write(p, PFUZE100_VGEN5VOL, 0);
 817
 818                                 /* Set VGEN6 to 2.5V and enable */
 819                                 pmic_reg_read(p, PFUZE100_VGEN6VOL, &reg);
 820                                 reg &= ~(LDO_VOL_MASK);
 821                                 reg |= (LDOB_2_50V | LDO_EN);
 822                                 pmic_reg_write(p, PFUZE100_VGEN6VOL, reg);
 823                         }
 824                 }
 825
 826                 /* put all switchers in continuous mode */
 827                 pmic_reg_read(p, PFUZE100_SW1ABMODE, &reg);
 828                 reg &= ~(SW_MODE_MASK);
 829                 reg |= PWM_PWM;
 830                 pmic_reg_write(p, PFUZE100_SW1ABMODE, reg);
 831
 832                 pmic_reg_read(p, PFUZE100_SW2MODE, &reg);
 833                 reg &= ~(SW_MODE_MASK);
 834                 reg |= PWM_PWM;
 835                 pmic_reg_write(p, PFUZE100_SW2MODE, reg);
 836
 837                 pmic_reg_read(p, PFUZE100_SW3AMODE, &reg);
 838                 reg &= ~(SW_MODE_MASK);
 839                 reg |= PWM_PWM;
 840                 pmic_reg_write(p, PFUZE100_SW3AMODE, reg);
 841
 842                 pmic_reg_read(p, PFUZE100_SW3BMODE, &reg);
 843                 reg &= ~(SW_MODE_MASK);
 844                 reg |= PWM_PWM;
 845                 pmic_reg_write(p, PFUZE100_SW3BMODE, reg);
 846
 847                 pmic_reg_read(p, PFUZE100_SW4MODE, &reg);
 848                 reg &= ~(SW_MODE_MASK);
 849                 reg |= PWM_PWM;
 850                 pmic_reg_write(p, PFUZE100_SW4MODE, reg);
 851         }
 852
 853         /* configure LTC3676 PMIC */
 854         else if (!i2c_probe(CFG_POWER_LTC3676_I2C_ADDR)) {
 855                 debug("probed LTC3676@0x%x\n", CFG_POWER_LTC3676_I2C_ADDR);
 856                 power_ltc3676_init(i2c_pmic);
 857                 p = pmic_get("LTC3676_PMIC");
 858                 if (!p || pmic_probe(p))
 859                         return;
 860                 puts("PMIC:  LTC3676\n");
 861                 /*
 862                  * set board-specific scalar for max CPU frequency
 863                  * per CPU based on the LDO enabled Operating Ranges
 864                  * defined in the respective IMX6DQ and IMX6SDL
 865                  * datasheets. The voltage resulting from the R1/R2
 866                  * feedback inputs on Ventana is 1308mV. Note that this
 867                  * is a bit shy of the Vmin of 1350mV in the datasheet
 868                  * for LDO enabled mode but is as high as we can go.
 869                  */
 870                 switch (board_type) {
 871                 case GW560x:
 872                         /* mask PGOOD during SW3 transition */
 873                         pmic_reg_write(p, LTC3676_DVB3B,
 874                                        0x1f | LTC3676_PGOOD_MASK);
 875                         /* set SW3 (VDD_ARM) */
 876                         pmic_reg_write(p, LTC3676_DVB3A, 0x1f);
 877                         break;
 878                 case GW5903:
 879                         /* mask PGOOD during SW3 transition */
 880                         pmic_reg_write(p, LTC3676_DVB3B,
 881                                        0x1f | LTC3676_PGOOD_MASK);
 882                         /* set SW3 (VDD_ARM) */
 883                         pmic_reg_write(p, LTC3676_DVB3A, 0x1f);
 884
 885                         /* mask PGOOD during SW4 transition */
 886                         pmic_reg_write(p, LTC3676_DVB4B,
 887                                        0x1f | LTC3676_PGOOD_MASK);
 888                         /* set SW4 (VDD_SOC) */
 889                         pmic_reg_write(p, LTC3676_DVB4A, 0x1f);
 890                         break;
 891                 case GW5905:
 892                         /* mask PGOOD during SW1 transition */
 893                         pmic_reg_write(p, LTC3676_DVB1B,
 894                                        0x1f | LTC3676_PGOOD_MASK);
 895                         /* set SW1 (VDD_ARM) */
 896                         pmic_reg_write(p, LTC3676_DVB1A, 0x1f);
 897
 898                         /* mask PGOOD during SW3 transition */
 899                         pmic_reg_write(p, LTC3676_DVB3B,
 900                                        0x1f | LTC3676_PGOOD_MASK);
 901                         /* set SW3 (VDD_SOC) */
 902                         pmic_reg_write(p, LTC3676_DVB3A, 0x1f);
 903                         break;
 904                 default:
 905                         /* mask PGOOD during SW1 transition */
 906                         pmic_reg_write(p, LTC3676_DVB1B,
 907                                        0x1f | LTC3676_PGOOD_MASK);
 908                         /* set SW1 (VDD_SOC) */
 909                         pmic_reg_write(p, LTC3676_DVB1A, 0x1f);
 910
 911                         /* mask PGOOD during SW3 transition */
 912                         pmic_reg_write(p, LTC3676_DVB3B,
 913                                        0x1f | LTC3676_PGOOD_MASK);
 914                         /* set SW3 (VDD_ARM) */
 915                         pmic_reg_write(p, LTC3676_DVB3A, 0x1f);
 916                 }
 917
 918                 /* put all switchers in continuous mode */
 919                 pmic_reg_write(p, LTC3676_BUCK1, 0xc0);
 920                 pmic_reg_write(p, LTC3676_BUCK2, 0xc0);
 921                 pmic_reg_write(p, LTC3676_BUCK3, 0xc0);
 922                 pmic_reg_write(p, LTC3676_BUCK4, 0xc0);
 923         }
 924
 925         /* configure MP5416 PMIC */
 926         else if (!i2c_probe(0x69)) {
 927                 puts("PMIC:  MP5416\n");
 928                 switch (board_type) {
 929                 case GW5910:
 930                         /* SW1: VDD_ARM 1.2V -> (1.275 to 1.475) */
 931                         reg = MP5416_VSET_EN | MP5416_VSET_SW1_SVAL(1475000);
 932                         i2c_write(0x69, MP5416_VSET_SW1, 1, (uint8_t *)&reg, 1);
 933                         /* SW4: VDD_SOC 1.2V -> (1.350 to 1.475) */
 934                         reg = MP5416_VSET_EN | MP5416_VSET_SW4_SVAL(1475000);
 935                         i2c_write(0x69, MP5416_VSET_SW4, 1, (uint8_t *)&reg, 1);
 936                         break;
 937                 }
 938         }
 939 }
 940
 941 /*
 942  * called from C runtime startup code (arch/arm/lib/crt0.S:_main)
 943  * - we have a stack and a place to store GD, both in SRAM
 944  * - no variable global data is available
 945  */
 946 void board_init_f(ulong dummy)
 947 {
 948         struct ventana_board_info ventana_info;
 949         int board_model;
 950
 951         /* setup clock gating */
 952         ccgr_init();
 953
 954         /* setup AIPS and disable watchdog */
 955         arch_cpu_init();
 956
 957         /* setup AXI */
 958         gpr_init();
 959
 960         /* iomux and setup of uart/i2c */
 961         setup_iomux_uart();
 962         setup_ventana_i2c(0);
 963         setup_ventana_i2c(1);
 964
 965         /* setup GP timer */
 966         timer_init();
 967
 968         /* UART clocks enabled and gd valid - init serial console */
 969         preloader_console_init();
 970
 971         /*
 972          * On a board with a missing/depleted backup battery for GSC, the
 973          * board may be ready to probe the GSC before its firmware is
 974          * running. We will wait here indefinately for the GSC/EEPROM.
 975          */
 976         while (1) {
 977                 if (!i2c_set_bus_num(BOARD_EEPROM_BUSNO) &&
 978                     !i2c_probe(BOARD_EEPROM_ADDR))
 979                         break;
 980                 mdelay(1);
 981         }
 982
 983         /* read/validate EEPROM info to determine board model and SDRAM cfg */
 984         board_model = read_eeprom(&ventana_info);
 985
 986         /* configure model-specific gpio */
 987         setup_iomux_gpio(board_model);
 988
 989         /* provide some some default: 32bit 128MB */
 990         if (GW_UNKNOWN == board_model)
 991                 hang();
 992
 993         /* configure MMDC for SDRAM width/size and per-model calibration */
 994         spl_dram_init(8 << ventana_info.sdram_width,
 995                       16 << ventana_info.sdram_size,
 996                       board_model);
 997 }
 998
 999 void board_boot_order(u32 *spl_boot_list)
1000 {
1001         spl_boot_list[0] = spl_boot_device();
1002         switch (spl_boot_list[0]) {
1003         case BOOT_DEVICE_NAND:
1004                 spl_boot_list[1] = BOOT_DEVICE_MMC1;
1005                 spl_boot_list[2] = BOOT_DEVICE_UART;
1006                 break;
1007         case BOOT_DEVICE_MMC1:
1008                 spl_boot_list[1] = BOOT_DEVICE_UART;
1009                 break;
1010         }
1011 }
1012
1013 /* called from board_init_r after gd setup if CONFIG_SPL_BOARD_INIT defined */
1014 /* its our chance to print info about boot device */
1015 void spl_board_init(void)
1016 {
1017         u32 boot_device;
1018
1019         /* determine boot device from SRC_SBMR1 (BOOT_CFG[4:1]) or SRC_GPR9 */
1020         boot_device = spl_boot_device();
1021
1022         /* read eeprom again now that we have gd */
1023         board_type = read_eeprom(&ventana_info);
1024         if (board_type == GW_UNKNOWN)
1025                 hang();
1026
1027         switch (boot_device) {
1028         case BOOT_DEVICE_MMC1:
1029                 puts("Booting from MMC\n");
1030                 break;
1031         case BOOT_DEVICE_NAND:
1032                 puts("Booting from NAND\n");
1033                 break;
1034         case BOOT_DEVICE_SATA:
1035                 puts("Booting from SATA\n");
1036                 break;
1037         default:
1038                 puts("Unknown boot device\n");
1039         }
1040
1041         /* PMIC init */
1042         setup_pmic();
1043 }
1044
1045 #ifdef CONFIG_SPL_OS_BOOT
1046 /* return 1 if we wish to boot to uboot vs os (falcon mode) */
1047 int spl_start_uboot(void)
1048 {
1049         unsigned char ret = 1;
1050
1051         debug("%s\n", __func__);
1052 #ifdef CONFIG_SPL_ENV_SUPPORT
1053         env_init();
1054         env_load();
1055         debug("boot_os=%s\n", env_get("boot_os"));
1056         if (env_get_yesno("boot_os") == 1)
1057                 ret = 0;
1058 #else
1059         /* use i2c-0:0x50:0x00 for falcon boot mode (0=linux, else uboot) */
1060         i2c_set_bus_num(0);
1061         gsc_i2c_read(0x50, 0x0, 1, &ret, 1);
1062 #endif
1063         if (!ret)
1064                 gsc_boot_wd_disable();
1065
1066         debug("%s booting %s\n", __func__, ret ? "uboot" : "linux");
1067         return ret;
1068 }
1069 #endif