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 <asm/io.h>
   9 #include <asm/arch/crm_regs.h>
  10 #include <asm/arch/mx6-ddr.h>
  11 #include <asm/arch/mx6-pins.h>
  12 #include <asm/arch/sys_proto.h>
  13 #include <asm/mach-imx/boot_mode.h>
  14 #include <asm/mach-imx/iomux-v3.h>
  15 #include <asm/mach-imx/mxc_i2c.h>
  16 #include <environment.h>
  17 #include <i2c.h>
  18 #include <spl.h>
  19
  20 #include "gsc.h"
  21 #include "common.h"
  22
  23 #define RTT_NOM_120OHM /* use 120ohm Rtt_nom vs 60ohm (lower power) */
  24 #define GSC_EEPROM_DDR_SIZE     0x2B    /* enum (512,1024,2048) MB */
  25 #define GSC_EEPROM_DDR_WIDTH    0x2D    /* enum (32,64) bit */
  26
  27 /* configure MX6Q/DUAL mmdc DDR io registers */
  28 struct mx6dq_iomux_ddr_regs mx6dq_ddr_ioregs = {
  29         /* SDCLK[0:1], CAS, RAS, Reset: Differential input, 40ohm */
  30         .dram_sdclk_0 = 0x00020030,
  31         .dram_sdclk_1 = 0x00020030,
  32         .dram_cas = 0x00020030,
  33         .dram_ras = 0x00020030,
  34         .dram_reset = 0x00020030,
  35         /* SDCKE[0:1]: 100k pull-up */
  36         .dram_sdcke0 = 0x00003000,
  37         .dram_sdcke1 = 0x00003000,
  38         /* SDBA2: pull-up disabled */
  39         .dram_sdba2 = 0x00000000,
  40         /* SDODT[0:1]: 100k pull-up, 40 ohm */
  41         .dram_sdodt0 = 0x00003030,
  42         .dram_sdodt1 = 0x00003030,
  43         /* SDQS[0:7]: Differential input, 40 ohm */
  44         .dram_sdqs0 = 0x00000030,
  45         .dram_sdqs1 = 0x00000030,
  46         .dram_sdqs2 = 0x00000030,
  47         .dram_sdqs3 = 0x00000030,
  48         .dram_sdqs4 = 0x00000030,
  49         .dram_sdqs5 = 0x00000030,
  50         .dram_sdqs6 = 0x00000030,
  51         .dram_sdqs7 = 0x00000030,
  52
  53         /* DQM[0:7]: Differential input, 40 ohm */
  54         .dram_dqm0 = 0x00020030,
  55         .dram_dqm1 = 0x00020030,
  56         .dram_dqm2 = 0x00020030,
  57         .dram_dqm3 = 0x00020030,
  58         .dram_dqm4 = 0x00020030,
  59         .dram_dqm5 = 0x00020030,
  60         .dram_dqm6 = 0x00020030,
  61         .dram_dqm7 = 0x00020030,
  62 };
  63
  64 /* configure MX6Q/DUAL mmdc GRP io registers */
  65 struct mx6dq_iomux_grp_regs mx6dq_grp_ioregs = {
  66         /* DDR3 */
  67         .grp_ddr_type = 0x000c0000,
  68         .grp_ddrmode_ctl = 0x00020000,
  69         /* disable DDR pullups */
  70         .grp_ddrpke = 0x00000000,
  71         /* ADDR[00:16], SDBA[0:1]: 40 ohm */
  72         .grp_addds = 0x00000030,
  73         /* CS0/CS1/SDBA2/CKE0/CKE1/SDWE: 40 ohm */
  74         .grp_ctlds = 0x00000030,
  75         /* DATA[00:63]: Differential input, 40 ohm */
  76         .grp_ddrmode = 0x00020000,
  77         .grp_b0ds = 0x00000030,
  78         .grp_b1ds = 0x00000030,
  79         .grp_b2ds = 0x00000030,
  80         .grp_b3ds = 0x00000030,
  81         .grp_b4ds = 0x00000030,
  82         .grp_b5ds = 0x00000030,
  83         .grp_b6ds = 0x00000030,
  84         .grp_b7ds = 0x00000030,
  85 };
  86
  87 /* configure MX6SOLO/DUALLITE mmdc DDR io registers */
  88 struct mx6sdl_iomux_ddr_regs mx6sdl_ddr_ioregs = {
  89         /* SDCLK[0:1], CAS, RAS, Reset: Differential input, 40ohm */
  90         .dram_sdclk_0 = 0x00020030,
  91         .dram_sdclk_1 = 0x00020030,
  92         .dram_cas = 0x00020030,
  93         .dram_ras = 0x00020030,
  94         .dram_reset = 0x00020030,
  95         /* SDCKE[0:1]: 100k pull-up */
  96         .dram_sdcke0 = 0x00003000,
  97         .dram_sdcke1 = 0x00003000,
  98         /* SDBA2: pull-up disabled */
  99         .dram_sdba2 = 0x00000000,
 100         /* SDODT[0:1]: 100k pull-up, 40 ohm */
 101         .dram_sdodt0 = 0x00003030,
 102         .dram_sdodt1 = 0x00003030,
 103         /* SDQS[0:7]: Differential input, 40 ohm */
 104         .dram_sdqs0 = 0x00000030,
 105         .dram_sdqs1 = 0x00000030,
 106         .dram_sdqs2 = 0x00000030,
 107         .dram_sdqs3 = 0x00000030,
 108         .dram_sdqs4 = 0x00000030,
 109         .dram_sdqs5 = 0x00000030,
 110         .dram_sdqs6 = 0x00000030,
 111         .dram_sdqs7 = 0x00000030,
 112
 113         /* DQM[0:7]: Differential input, 40 ohm */
 114         .dram_dqm0 = 0x00020030,
 115         .dram_dqm1 = 0x00020030,
 116         .dram_dqm2 = 0x00020030,
 117         .dram_dqm3 = 0x00020030,
 118         .dram_dqm4 = 0x00020030,
 119         .dram_dqm5 = 0x00020030,
 120         .dram_dqm6 = 0x00020030,
 121         .dram_dqm7 = 0x00020030,
 122 };
 123
 124 /* configure MX6SOLO/DUALLITE mmdc GRP io registers */
 125 struct mx6sdl_iomux_grp_regs mx6sdl_grp_ioregs = {
 126         /* DDR3 */
 127         .grp_ddr_type = 0x000c0000,
 128         /* SDQS[0:7]: Differential input, 40 ohm */
 129         .grp_ddrmode_ctl = 0x00020000,
 130         /* disable DDR pullups */
 131         .grp_ddrpke = 0x00000000,
 132         /* ADDR[00:16], SDBA[0:1]: 40 ohm */
 133         .grp_addds = 0x00000030,
 134         /* CS0/CS1/SDBA2/CKE0/CKE1/SDWE: 40 ohm */
 135         .grp_ctlds = 0x00000030,
 136         /* DATA[00:63]: Differential input, 40 ohm */
 137         .grp_ddrmode = 0x00020000,
 138         .grp_b0ds = 0x00000030,
 139         .grp_b1ds = 0x00000030,
 140         .grp_b2ds = 0x00000030,
 141         .grp_b3ds = 0x00000030,
 142         .grp_b4ds = 0x00000030,
 143         .grp_b5ds = 0x00000030,
 144         .grp_b6ds = 0x00000030,
 145         .grp_b7ds = 0x00000030,
 146 };
 147
 148 /* MT41K64M16JT-125 (1Gb density) */
 149 static struct mx6_ddr3_cfg mt41k64m16jt_125 = {
 150         .mem_speed = 1600,
 151         .density = 1,
 152         .width = 16,
 153         .banks = 8,
 154         .rowaddr = 13,
 155         .coladdr = 10,
 156         .pagesz = 2,
 157         .trcd = 1375,
 158         .trcmin = 4875,
 159         .trasmin = 3500,
 160 };
 161
 162 /* MT41K128M16JT-125 (2Gb density) */
 163 static struct mx6_ddr3_cfg mt41k128m16jt_125 = {
 164         .mem_speed = 1600,
 165         .density = 2,
 166         .width = 16,
 167         .banks = 8,
 168         .rowaddr = 14,
 169         .coladdr = 10,
 170         .pagesz = 2,
 171         .trcd = 1375,
 172         .trcmin = 4875,
 173         .trasmin = 3500,
 174 };
 175
 176 /* MT41K256M16HA-125 (4Gb density) */
 177 static struct mx6_ddr3_cfg mt41k256m16ha_125 = {
 178         .mem_speed = 1600,
 179         .density = 4,
 180         .width = 16,
 181         .banks = 8,
 182         .rowaddr = 15,
 183         .coladdr = 10,
 184         .pagesz = 2,
 185         .trcd = 1375,
 186         .trcmin = 4875,
 187         .trasmin = 3500,
 188 };
 189
 190 /* MT41K512M16HA-125 (8Gb density) */
 191 static struct mx6_ddr3_cfg mt41k512m16ha_125 = {
 192         .mem_speed = 1600,
 193         .density = 8,
 194         .width = 16,
 195         .banks = 8,
 196         .rowaddr = 16,
 197         .coladdr = 10,
 198         .pagesz = 2,
 199         .trcd = 1375,
 200         .trcmin = 4875,
 201         .trasmin = 3500,
 202 };
 203
 204 /*
 205  * calibration - these are the various CPU/DDR3 combinations we support
 206  */
 207 static struct mx6_mmdc_calibration mx6sdl_64x16_mmdc_calib = {
 208         /* write leveling calibration determine */
 209         .p0_mpwldectrl0 = 0x004C004E,
 210         .p0_mpwldectrl1 = 0x00440044,
 211         /* Read DQS Gating calibration */
 212         .p0_mpdgctrl0 = 0x42440247,
 213         .p0_mpdgctrl1 = 0x02310232,
 214         /* Read Calibration: DQS delay relative to DQ read access */
 215         .p0_mprddlctl = 0x45424746,
 216         /* Write Calibration: DQ/DM delay relative to DQS write access */
 217         .p0_mpwrdlctl = 0x33382C31,
 218 };
 219
 220 static struct mx6_mmdc_calibration mx6dq_256x16_mmdc_calib = {
 221         /* write leveling calibration determine */
 222         .p0_mpwldectrl0 = 0x001B0016,
 223         .p0_mpwldectrl1 = 0x000C000E,
 224         /* Read DQS Gating calibration */
 225         .p0_mpdgctrl0 = 0x4324033A,
 226         .p0_mpdgctrl1 = 0x00000000,
 227         /* Read Calibration: DQS delay relative to DQ read access */
 228         .p0_mprddlctl = 0x40403438,
 229         /* Write Calibration: DQ/DM delay relative to DQS write access */
 230         .p0_mpwrdlctl = 0x40403D36,
 231 };
 232
 233 static struct mx6_mmdc_calibration mx6sdl_256x16_mmdc_calib = {
 234         /* write leveling calibration determine */
 235         .p0_mpwldectrl0 = 0x00420043,
 236         .p0_mpwldectrl1 = 0x0016001A,
 237         /* Read DQS Gating calibration */
 238         .p0_mpdgctrl0 = 0x4238023B,
 239         .p0_mpdgctrl1 = 0x00000000,
 240         /* Read Calibration: DQS delay relative to DQ read access */
 241         .p0_mprddlctl = 0x40404849,
 242         /* Write Calibration: DQ/DM delay relative to DQS write access */
 243         .p0_mpwrdlctl = 0x40402E2F,
 244 };
 245
 246 static struct mx6_mmdc_calibration mx6dq_128x32_mmdc_calib = {
 247         /* write leveling calibration determine */
 248         .p0_mpwldectrl0 = 0x00190017,
 249         .p0_mpwldectrl1 = 0x00140026,
 250         /* Read DQS Gating calibration */
 251         .p0_mpdgctrl0 = 0x43380347,
 252         .p0_mpdgctrl1 = 0x433C034D,
 253         /* Read Calibration: DQS delay relative to DQ read access */
 254         .p0_mprddlctl = 0x3C313539,
 255         /* Write Calibration: DQ/DM delay relative to DQS write access */
 256         .p0_mpwrdlctl = 0x36393C39,
 257 };
 258
 259 static struct mx6_mmdc_calibration mx6sdl_128x32_mmdc_calib = {
 260         /* write leveling calibration determine */
 261         .p0_mpwldectrl0 = 0x003C003C,
 262         .p0_mpwldectrl1 = 0x001F002A,
 263         /* Read DQS Gating calibration */
 264         .p0_mpdgctrl0 = 0x42410244,
 265         .p0_mpdgctrl1 = 0x4234023A,
 266         /* Read Calibration: DQS delay relative to DQ read access */
 267         .p0_mprddlctl = 0x484A4C4B,
 268         /* Write Calibration: DQ/DM delay relative to DQS write access */
 269         .p0_mpwrdlctl = 0x33342B32,
 270 };
 271
 272 static struct mx6_mmdc_calibration mx6dq_128x64_mmdc_calib = {
 273         /* write leveling calibration determine */
 274         .p0_mpwldectrl0 = 0x00190017,
 275         .p0_mpwldectrl1 = 0x00140026,
 276         .p1_mpwldectrl0 = 0x0021001C,
 277         .p1_mpwldectrl1 = 0x0011001D,
 278         /* Read DQS Gating calibration */
 279         .p0_mpdgctrl0 = 0x43380347,
 280         .p0_mpdgctrl1 = 0x433C034D,
 281         .p1_mpdgctrl0 = 0x032C0324,
 282         .p1_mpdgctrl1 = 0x03310232,
 283         /* Read Calibration: DQS delay relative to DQ read access */
 284         .p0_mprddlctl = 0x3C313539,
 285         .p1_mprddlctl = 0x37343141,
 286         /* Write Calibration: DQ/DM delay relative to DQS write access */
 287         .p0_mpwrdlctl = 0x36393C39,
 288         .p1_mpwrdlctl = 0x42344438,
 289 };
 290
 291 static struct mx6_mmdc_calibration mx6sdl_128x64_mmdc_calib = {
 292         /* write leveling calibration determine */
 293         .p0_mpwldectrl0 = 0x003C003C,
 294         .p0_mpwldectrl1 = 0x001F002A,
 295         .p1_mpwldectrl0 = 0x00330038,
 296         .p1_mpwldectrl1 = 0x0022003F,
 297         /* Read DQS Gating calibration */
 298         .p0_mpdgctrl0 = 0x42410244,
 299         .p0_mpdgctrl1 = 0x4234023A,
 300         .p1_mpdgctrl0 = 0x022D022D,
 301         .p1_mpdgctrl1 = 0x021C0228,
 302         /* Read Calibration: DQS delay relative to DQ read access */
 303         .p0_mprddlctl = 0x484A4C4B,
 304         .p1_mprddlctl = 0x4B4D4E4B,
 305         /* Write Calibration: DQ/DM delay relative to DQS write access */
 306         .p0_mpwrdlctl = 0x33342B32,
 307         .p1_mpwrdlctl = 0x3933332B,
 308 };
 309
 310 static struct mx6_mmdc_calibration mx6dq_256x32_mmdc_calib = {
 311         /* write leveling calibration determine */
 312         .p0_mpwldectrl0 = 0x001E001A,
 313         .p0_mpwldectrl1 = 0x0026001F,
 314         /* Read DQS Gating calibration */
 315         .p0_mpdgctrl0 = 0x43370349,
 316         .p0_mpdgctrl1 = 0x032D0327,
 317         /* Read Calibration: DQS delay relative to DQ read access */
 318         .p0_mprddlctl = 0x3D303639,
 319         /* Write Calibration: DQ/DM delay relative to DQS write access */
 320         .p0_mpwrdlctl = 0x32363934,
 321 };
 322
 323 static struct mx6_mmdc_calibration mx6sdl_256x32_mmdc_calib = {
 324         /* write leveling calibration determine */
 325         .p0_mpwldectrl0 = 0X00480047,
 326         .p0_mpwldectrl1 = 0X003D003F,
 327         /* Read DQS Gating calibration */
 328         .p0_mpdgctrl0 = 0X423E0241,
 329         .p0_mpdgctrl1 = 0X022B022C,
 330         /* Read Calibration: DQS delay relative to DQ read access */
 331         .p0_mprddlctl = 0X49454A4A,
 332         /* Write Calibration: DQ/DM delay relative to DQS write access */
 333         .p0_mpwrdlctl = 0X2E372C32,
 334 };
 335
 336 static struct mx6_mmdc_calibration mx6dq_256x64_mmdc_calib = {
 337         /* write leveling calibration determine */
 338         .p0_mpwldectrl0 = 0X00220021,
 339         .p0_mpwldectrl1 = 0X00200030,
 340         .p1_mpwldectrl0 = 0X002D0027,
 341         .p1_mpwldectrl1 = 0X00150026,
 342         /* Read DQS Gating calibration */
 343         .p0_mpdgctrl0 = 0x43330342,
 344         .p0_mpdgctrl1 = 0x0339034A,
 345         .p1_mpdgctrl0 = 0x032F0325,
 346         .p1_mpdgctrl1 = 0x032F022E,
 347         /* Read Calibration: DQS delay relative to DQ read access */
 348         .p0_mprddlctl = 0X3A2E3437,
 349         .p1_mprddlctl = 0X35312F3F,
 350         /* Write Calibration: DQ/DM delay relative to DQS write access */
 351         .p0_mpwrdlctl = 0X33363B37,
 352         .p1_mpwrdlctl = 0X40304239,
 353 };
 354
 355 static struct mx6_mmdc_calibration mx6sdl_256x64_mmdc_calib = {
 356         /* write leveling calibration determine */
 357         .p0_mpwldectrl0 = 0x0048004A,
 358         .p0_mpwldectrl1 = 0x003F004A,
 359         .p1_mpwldectrl0 = 0x001E0028,
 360         .p1_mpwldectrl1 = 0x002C0043,
 361         /* Read DQS Gating calibration */
 362         .p0_mpdgctrl0 = 0x02250219,
 363         .p0_mpdgctrl1 = 0x01790202,
 364         .p1_mpdgctrl0 = 0x02080208,
 365         .p1_mpdgctrl1 = 0x016C0175,
 366         /* Read Calibration: DQS delay relative to DQ read access */
 367         .p0_mprddlctl = 0x4A4C4D4C,
 368         .p1_mprddlctl = 0x494C4A48,
 369         /* Write Calibration: DQ/DM delay relative to DQS write access */
 370         .p0_mpwrdlctl = 0x403F3437,
 371         .p1_mpwrdlctl = 0x383A3930,
 372 };
 373
 374 static struct mx6_mmdc_calibration mx6sdl_256x64x2_mmdc_calib = {
 375         /* write leveling calibration determine */
 376         .p0_mpwldectrl0 = 0x001F003F,
 377         .p0_mpwldectrl1 = 0x001F001F,
 378         .p1_mpwldectrl0 = 0x001F004E,
 379         .p1_mpwldectrl1 = 0x0059001F,
 380         /* Read DQS Gating calibration */
 381         .p0_mpdgctrl0   = 0x42220225,
 382         .p0_mpdgctrl1   = 0x0213021F,
 383         .p1_mpdgctrl0   = 0x022C0242,
 384         .p1_mpdgctrl1   = 0x022C0244,
 385         /* Read Calibration: DQS delay relative to DQ read access */
 386         .p0_mprddlctl   = 0x474A4C4A,
 387         .p1_mprddlctl   = 0x48494C45,
 388         /* Write Calibration: DQ/DM delay relative to DQS write access */
 389         .p0_mpwrdlctl   = 0x3F3F3F36,
 390         .p1_mpwrdlctl   = 0x3F36363F,
 391 };
 392
 393 static struct mx6_mmdc_calibration mx6sdl_128x64x2_mmdc_calib = {
 394         /* write leveling calibration determine */
 395         .p0_mpwldectrl0 = 0x001F003F,
 396         .p0_mpwldectrl1 = 0x001F001F,
 397         .p1_mpwldectrl0 = 0x001F004E,
 398         .p1_mpwldectrl1 = 0x0059001F,
 399         /* Read DQS Gating calibration */
 400         .p0_mpdgctrl0   = 0x42220225,
 401         .p0_mpdgctrl1   = 0x0213021F,
 402         .p1_mpdgctrl0   = 0x022C0242,
 403         .p1_mpdgctrl1   = 0x022C0244,
 404         /* Read Calibration: DQS delay relative to DQ read access */
 405         .p0_mprddlctl   = 0x474A4C4A,
 406         .p1_mprddlctl   = 0x48494C45,
 407         /* Write Calibration: DQ/DM delay relative to DQS write access */
 408         .p0_mpwrdlctl   = 0x3F3F3F36,
 409         .p1_mpwrdlctl   = 0x3F36363F,
 410 };
 411
 412 static struct mx6_mmdc_calibration mx6dq_512x32_mmdc_calib = {
 413         /* write leveling calibration determine */
 414         .p0_mpwldectrl0 = 0x002A0025,
 415         .p0_mpwldectrl1 = 0x003A002A,
 416         /* Read DQS Gating calibration */
 417         .p0_mpdgctrl0 = 0x43430356,
 418         .p0_mpdgctrl1 = 0x033C0335,
 419         /* Read Calibration: DQS delay relative to DQ read access */
 420         .p0_mprddlctl = 0x4B373F42,
 421         /* Write Calibration: DQ/DM delay relative to DQS write access */
 422         .p0_mpwrdlctl = 0x303E3C36,
 423 };
 424
 425 static struct mx6_mmdc_calibration mx6dq_512x64_mmdc_calib = {
 426         /* write leveling calibration determine */
 427         .p0_mpwldectrl0 = 0x00230020,
 428         .p0_mpwldectrl1 = 0x002F002A,
 429         .p1_mpwldectrl0 = 0x001D0027,
 430         .p1_mpwldectrl1 = 0x00100023,
 431         /* Read DQS Gating calibration */
 432         .p0_mpdgctrl0 = 0x03250339,
 433         .p0_mpdgctrl1 = 0x031C0316,
 434         .p1_mpdgctrl0 = 0x03210331,
 435         .p1_mpdgctrl1 = 0x031C025A,
 436         /* Read Calibration: DQS delay relative to DQ read access */
 437         .p0_mprddlctl = 0x40373C40,
 438         .p1_mprddlctl = 0x3A373646,
 439         /* Write Calibration: DQ/DM delay relative to DQS write access */
 440         .p0_mpwrdlctl = 0x2E353933,
 441         .p1_mpwrdlctl = 0x3C2F3F35,
 442 };
 443
 444 static void spl_dram_init(int width, int size_mb, int board_model)
 445 {
 446         struct mx6_ddr3_cfg *mem = NULL;
 447         struct mx6_mmdc_calibration *calib = NULL;
 448         struct mx6_ddr_sysinfo sysinfo = {
 449                 /* width of data bus:0=16,1=32,2=64 */
 450                 .dsize = width/32,
 451                 /* config for full 4GB range so that get_mem_size() works */
 452                 .cs_density = 32, /* 32Gb per CS */
 453                 /* single chip select */
 454                 .ncs = 1,
 455                 .cs1_mirror = 0,
 456                 .rtt_wr = 1 /*DDR3_RTT_60_OHM*/,        /* RTT_Wr = RZQ/4 */
 457 #ifdef RTT_NOM_120OHM
 458                 .rtt_nom = 2 /*DDR3_RTT_120_OHM*/,      /* RTT_Nom = RZQ/2 */
 459 #else
 460                 .rtt_nom = 1 /*DDR3_RTT_60_OHM*/,       /* RTT_Nom = RZQ/4 */
 461 #endif
 462                 .walat = 1,     /* Write additional latency */
 463                 .ralat = 5,     /* Read additional latency */
 464                 .mif3_mode = 3, /* Command prediction working mode */
 465                 .bi_on = 1,     /* Bank interleaving enabled */
 466                 .sde_to_rst = 0x10,     /* 14 cycles, 200us (JEDEC default) */
 467                 .rst_to_cke = 0x23,     /* 33 cycles, 500us (JEDEC default) */
 468                 .pd_fast_exit = 1, /* enable precharge power-down fast exit */
 469                 .ddr_type = DDR_TYPE_DDR3,
 470                 .refsel = 1,    /* Refresh cycles at 32KHz */
 471                 .refr = 7,      /* 8 refresh commands per refresh cycle */
 472         };
 473
 474         /*
 475          * MMDC Calibration requires the following data:
 476          *   mx6_mmdc_calibration - board-specific calibration (routing delays)
 477          *      these calibration values depend on board routing, SoC, and DDR
 478          *   mx6_ddr_sysinfo - board-specific memory architecture (width/cs/etc)
 479          *   mx6_ddr_cfg - chip specific timing/layout details
 480          */
 481         if (width == 16 && size_mb == 128) {
 482                 mem = &mt41k64m16jt_125;
 483                 if (is_cpu_type(MXC_CPU_MX6Q))
 484                         ;
 485                 else
 486                         calib = &mx6sdl_64x16_mmdc_calib;
 487                 debug("1gB density\n");
 488         } else if (width == 16 && size_mb == 256) {
 489                 /* 1x 2Gb density chip - same calib as 2x 2Gb */
 490                 mem = &mt41k128m16jt_125;
 491                 if (is_cpu_type(MXC_CPU_MX6Q))
 492                         calib = &mx6dq_128x32_mmdc_calib;
 493                 else
 494                         calib = &mx6sdl_128x32_mmdc_calib;
 495                 debug("2gB density\n");
 496         } else if (width == 16 && size_mb == 512) {
 497                 mem = &mt41k256m16ha_125;
 498                 if (is_cpu_type(MXC_CPU_MX6Q))
 499                         calib = &mx6dq_256x16_mmdc_calib;
 500                 else
 501                         calib = &mx6sdl_256x16_mmdc_calib;
 502                 debug("4gB density\n");
 503         } else if (width == 32 && size_mb == 256) {
 504                 /* Same calib as width==16, size==128 */
 505                 mem = &mt41k64m16jt_125;
 506                 if (is_cpu_type(MXC_CPU_MX6Q))
 507                         ;
 508                 else
 509                         calib = &mx6sdl_64x16_mmdc_calib;
 510                 debug("1gB density\n");
 511         } else if (width == 32 && size_mb == 512) {
 512                 mem = &mt41k128m16jt_125;
 513                 if (is_cpu_type(MXC_CPU_MX6Q))
 514                         calib = &mx6dq_128x32_mmdc_calib;
 515                 else
 516                         calib = &mx6sdl_128x32_mmdc_calib;
 517                 debug("2gB density\n");
 518         }  else if (width == 32 && size_mb == 1024) {
 519                 mem = &mt41k256m16ha_125;
 520                 if (is_cpu_type(MXC_CPU_MX6Q))
 521                         calib = &mx6dq_256x32_mmdc_calib;
 522                 else
 523                         calib = &mx6sdl_256x32_mmdc_calib;
 524                 debug("4gB density\n");
 525         } else if (width == 32 && size_mb == 2048) {
 526                 mem = &mt41k512m16ha_125;
 527                 if (is_cpu_type(MXC_CPU_MX6Q))
 528                         calib = &mx6dq_512x32_mmdc_calib;
 529                 debug("8gB density\n");
 530         } else if (width == 64 && size_mb == 512) {
 531                 mem = &mt41k64m16jt_125;
 532                 debug("1gB density\n");
 533         } else if (width == 64 && size_mb == 1024) {
 534                 mem = &mt41k128m16jt_125;
 535                 if (is_cpu_type(MXC_CPU_MX6Q))
 536                         calib = &mx6dq_128x64_mmdc_calib;
 537                 else
 538                         calib = &mx6sdl_128x64_mmdc_calib;
 539                 debug("2gB density\n");
 540         } else if (width == 64 && size_mb == 2048) {
 541                 switch(board_model) {
 542                 case GW5905:
 543                         /* 8xMT41K128M16 (2GiB) fly-by mirrored 2-chipsels */
 544                         mem = &mt41k128m16jt_125;
 545                         debug("2gB density - 2 chipsel\n");
 546                         if (!is_cpu_type(MXC_CPU_MX6Q)) {
 547                                 calib = &mx6sdl_128x64x2_mmdc_calib;
 548                                 sysinfo.ncs = 2;
 549                                 sysinfo.cs_density = 10; /* CS0_END=39 */
 550                                 sysinfo.cs1_mirror = 1; /* mirror enabled */
 551                         }
 552                         break;
 553                 default:
 554                         mem = &mt41k256m16ha_125;
 555                         if (is_cpu_type(MXC_CPU_MX6Q))
 556                                 calib = &mx6dq_256x64_mmdc_calib;
 557                         else
 558                                 calib = &mx6sdl_256x64_mmdc_calib;
 559                         debug("4gB density\n");
 560                         break;
 561                 }
 562         } else if (width == 64 && size_mb == 4096) {
 563                 switch(board_model) {
 564                 case GW5903:
 565                         /* 8xMT41K256M16 (4GiB) fly-by mirrored 2-chipsels */
 566                         mem = &mt41k256m16ha_125;
 567                         debug("4gB density - 2 chipsel\n");
 568                         if (!is_cpu_type(MXC_CPU_MX6Q)) {
 569                                 calib = &mx6sdl_256x64x2_mmdc_calib;
 570                                 sysinfo.ncs = 2;
 571                                 sysinfo.cs_density = 18; /* CS0_END=71 */
 572                                 sysinfo.cs1_mirror = 1; /* mirror enabled */
 573                         }
 574                         break;
 575                 default:
 576                         mem = &mt41k512m16ha_125;
 577                         if (is_cpu_type(MXC_CPU_MX6Q))
 578                                 calib = &mx6dq_512x64_mmdc_calib;
 579                         debug("8gB density\n");
 580                         break;
 581                 }
 582         }
 583
 584         if (!(mem && calib)) {
 585                 puts("Error: Invalid Calibration/Board Configuration\n");
 586                 printf("MEM    : %s\n", mem ? "OKAY" : "NULL");
 587                 printf("CALIB  : %s\n", calib ? "OKAY" : "NULL");
 588                 printf("CPUTYPE: %s\n",
 589                        is_cpu_type(MXC_CPU_MX6Q) ? "IMX6Q" : "IMX6DL");
 590                 printf("SIZE_MB: %d\n", size_mb);
 591                 printf("WIDTH  : %d\n", width);
 592                 hang();
 593         }
 594
 595         if (is_cpu_type(MXC_CPU_MX6Q))
 596                 mx6dq_dram_iocfg(width, &mx6dq_ddr_ioregs,
 597                                  &mx6dq_grp_ioregs);
 598         else
 599                 mx6sdl_dram_iocfg(width, &mx6sdl_ddr_ioregs,
 600                                   &mx6sdl_grp_ioregs);
 601         mx6_dram_cfg(&sysinfo, calib, mem);
 602 }
 603
 604 static void ccgr_init(void)
 605 {
 606         struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 607
 608         writel(0x00C03F3F, &ccm->CCGR0);
 609         writel(0x0030FC03, &ccm->CCGR1);
 610         writel(0x0FFFC000, &ccm->CCGR2);
 611         writel(0x3FF00000, &ccm->CCGR3);
 612         writel(0xFFFFF300, &ccm->CCGR4);        /* enable NAND/GPMI/BCH clks */
 613         writel(0x0F0000C3, &ccm->CCGR5);
 614         writel(0x000003FF, &ccm->CCGR6);
 615 }
 616
 617 /*
 618  * called from C runtime startup code (arch/arm/lib/crt0.S:_main)
 619  * - we have a stack and a place to store GD, both in SRAM
 620  * - no variable global data is available
 621  */
 622 void board_init_f(ulong dummy)
 623 {
 624         struct ventana_board_info ventana_info;
 625         int board_model;
 626
 627         /* setup clock gating */
 628         ccgr_init();
 629
 630         /* setup AIPS and disable watchdog */
 631         arch_cpu_init();
 632
 633         /* setup AXI */
 634         gpr_init();
 635
 636         /* iomux and setup of uart/i2c */
 637         setup_iomux_uart();
 638         setup_ventana_i2c(0);
 639         setup_ventana_i2c(1);
 640
 641         /* setup GP timer */
 642         timer_init();
 643
 644         /* UART clocks enabled and gd valid - init serial console */
 645         preloader_console_init();
 646
 647         /* read/validate EEPROM info to determine board model and SDRAM cfg */
 648         board_model = read_eeprom(CONFIG_I2C_GSC, &ventana_info);
 649
 650         /* configure model-specific gpio */
 651         setup_iomux_gpio(board_model, &ventana_info);
 652
 653         /* provide some some default: 32bit 128MB */
 654         if (GW_UNKNOWN == board_model)
 655                 hang();
 656
 657         /* configure MMDC for SDRAM width/size and per-model calibration */
 658         spl_dram_init(8 << ventana_info.sdram_width,
 659                       16 << ventana_info.sdram_size,
 660                       board_model);
 661 }
 662
 663 void board_boot_order(u32 *spl_boot_list)
 664 {
 665         spl_boot_list[0] = spl_boot_device();
 666         switch (spl_boot_list[0]) {
 667         case BOOT_DEVICE_NAND:
 668                 spl_boot_list[1] = BOOT_DEVICE_MMC1;
 669                 spl_boot_list[2] = BOOT_DEVICE_UART;
 670                 break;
 671         case BOOT_DEVICE_MMC1:
 672                 spl_boot_list[1] = BOOT_DEVICE_UART;
 673                 break;
 674         }
 675 }
 676
 677 /* called from board_init_r after gd setup if CONFIG_SPL_BOARD_INIT defined */
 678 /* its our chance to print info about boot device */
 679 void spl_board_init(void)
 680 {
 681         /* determine boot device from SRC_SBMR1 (BOOT_CFG[4:1]) or SRC_GPR9 */
 682         u32 boot_device = spl_boot_device();
 683
 684         switch (boot_device) {
 685         case BOOT_DEVICE_MMC1:
 686                 puts("Booting from MMC\n");
 687                 break;
 688         case BOOT_DEVICE_NAND:
 689                 puts("Booting from NAND\n");
 690                 break;
 691         case BOOT_DEVICE_SATA:
 692                 puts("Booting from SATA\n");
 693                 break;
 694         default:
 695                 puts("Unknown boot device\n");
 696         }
 697
 698         /* PMIC init */
 699         setup_pmic();
 700 }
 701
 702 #ifdef CONFIG_SPL_OS_BOOT
 703 /* return 1 if we wish to boot to uboot vs os (falcon mode) */
 704 int spl_start_uboot(void)
 705 {
 706         unsigned char ret = 1;
 707
 708         debug("%s\n", __func__);
 709 #ifdef CONFIG_SPL_ENV_SUPPORT
 710         env_init();
 711         env_load();
 712         debug("boot_os=%s\n", env_get("boot_os"));
 713         if (env_get_yesno("boot_os") == 1)
 714                 ret = 0;
 715 #else
 716         /* use i2c-0:0x50:0x00 for falcon boot mode (0=linux, else uboot) */
 717         i2c_set_bus_num(0);
 718         gsc_i2c_read(0x50, 0x0, 1, &ret, 1);
 719 #endif
 720         if (!ret)
 721                 gsc_boot_wd_disable();
 722
 723         debug("%s booting %s\n", __func__, ret ? "uboot" : "linux");
 724         return ret;
 725 }
 726 #endif