board/wandboard/spl.c

   1 /*
   2  * Copyright (C) 2014 Wandboard
   3  * Author: Tungyi Lin <tungyilin1127@gmail.com>
   4  *         Richard Hu <hakahu@gmail.com>
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <asm/arch/clock.h>
   9 #include <asm/arch/imx-regs.h>
  10 #include <asm/arch/iomux.h>
  11 #include <asm/arch/mx6-pins.h>
  12 #include <linux/errno.h>
  13 #include <asm/gpio.h>
  14 #include <asm/imx-common/iomux-v3.h>
  15 #include <asm/imx-common/video.h>
  16 #include <mmc.h>
  17 #include <fsl_esdhc.h>
  18 #include <asm/arch/crm_regs.h>
  19 #include <asm/io.h>
  20 #include <asm/arch/sys_proto.h>
  21 #include <spl.h>
  22
  23 DECLARE_GLOBAL_DATA_PTR;
  24
  25 #if defined(CONFIG_SPL_BUILD)
  26 #include <asm/arch/mx6-ddr.h>
  27 /*
  28  * Driving strength:
  29  *   0x30 == 40 Ohm
  30  *   0x28 == 48 Ohm
  31  */
  32
  33 #define IMX6DQ_DRIVE_STRENGTH           0x30
  34 #define IMX6SDL_DRIVE_STRENGTH          0x28
  35
  36 /* configure MX6Q/DUAL mmdc DDR io registers */
  37 static struct mx6dq_iomux_ddr_regs mx6dq_ddr_ioregs = {
  38         .dram_sdclk_0 = IMX6DQ_DRIVE_STRENGTH,
  39         .dram_sdclk_1 = IMX6DQ_DRIVE_STRENGTH,
  40         .dram_cas = IMX6DQ_DRIVE_STRENGTH,
  41         .dram_ras = IMX6DQ_DRIVE_STRENGTH,
  42         .dram_reset = IMX6DQ_DRIVE_STRENGTH,
  43         .dram_sdcke0 = IMX6DQ_DRIVE_STRENGTH,
  44         .dram_sdcke1 = IMX6DQ_DRIVE_STRENGTH,
  45         .dram_sdba2 = 0x00000000,
  46         .dram_sdodt0 = IMX6DQ_DRIVE_STRENGTH,
  47         .dram_sdodt1 = IMX6DQ_DRIVE_STRENGTH,
  48         .dram_sdqs0 = IMX6DQ_DRIVE_STRENGTH,
  49         .dram_sdqs1 = IMX6DQ_DRIVE_STRENGTH,
  50         .dram_sdqs2 = IMX6DQ_DRIVE_STRENGTH,
  51         .dram_sdqs3 = IMX6DQ_DRIVE_STRENGTH,
  52         .dram_sdqs4 = IMX6DQ_DRIVE_STRENGTH,
  53         .dram_sdqs5 = IMX6DQ_DRIVE_STRENGTH,
  54         .dram_sdqs6 = IMX6DQ_DRIVE_STRENGTH,
  55         .dram_sdqs7 = IMX6DQ_DRIVE_STRENGTH,
  56         .dram_dqm0 = IMX6DQ_DRIVE_STRENGTH,
  57         .dram_dqm1 = IMX6DQ_DRIVE_STRENGTH,
  58         .dram_dqm2 = IMX6DQ_DRIVE_STRENGTH,
  59         .dram_dqm3 = IMX6DQ_DRIVE_STRENGTH,
  60         .dram_dqm4 = IMX6DQ_DRIVE_STRENGTH,
  61         .dram_dqm5 = IMX6DQ_DRIVE_STRENGTH,
  62         .dram_dqm6 = IMX6DQ_DRIVE_STRENGTH,
  63         .dram_dqm7 = IMX6DQ_DRIVE_STRENGTH,
  64 };
  65
  66 /* configure MX6Q/DUAL mmdc GRP io registers */
  67 static struct mx6dq_iomux_grp_regs mx6dq_grp_ioregs = {
  68         .grp_ddr_type = 0x000c0000,
  69         .grp_ddrmode_ctl = 0x00020000,
  70         .grp_ddrpke = 0x00000000,
  71         .grp_addds = IMX6DQ_DRIVE_STRENGTH,
  72         .grp_ctlds = IMX6DQ_DRIVE_STRENGTH,
  73         .grp_ddrmode = 0x00020000,
  74         .grp_b0ds = IMX6DQ_DRIVE_STRENGTH,
  75         .grp_b1ds = IMX6DQ_DRIVE_STRENGTH,
  76         .grp_b2ds = IMX6DQ_DRIVE_STRENGTH,
  77         .grp_b3ds = IMX6DQ_DRIVE_STRENGTH,
  78         .grp_b4ds = IMX6DQ_DRIVE_STRENGTH,
  79         .grp_b5ds = IMX6DQ_DRIVE_STRENGTH,
  80         .grp_b6ds = IMX6DQ_DRIVE_STRENGTH,
  81         .grp_b7ds = IMX6DQ_DRIVE_STRENGTH,
  82 };
  83
  84 /* configure MX6SOLO/DUALLITE mmdc DDR io registers */
  85 struct mx6sdl_iomux_ddr_regs mx6sdl_ddr_ioregs = {
  86         .dram_sdclk_0 = IMX6SDL_DRIVE_STRENGTH,
  87         .dram_sdclk_1 = IMX6SDL_DRIVE_STRENGTH,
  88         .dram_cas = IMX6SDL_DRIVE_STRENGTH,
  89         .dram_ras = IMX6SDL_DRIVE_STRENGTH,
  90         .dram_reset = IMX6SDL_DRIVE_STRENGTH,
  91         .dram_sdcke0 = IMX6SDL_DRIVE_STRENGTH,
  92         .dram_sdcke1 = IMX6SDL_DRIVE_STRENGTH,
  93         .dram_sdba2 = 0x00000000,
  94         .dram_sdodt0 = IMX6SDL_DRIVE_STRENGTH,
  95         .dram_sdodt1 = IMX6SDL_DRIVE_STRENGTH,
  96         .dram_sdqs0 = IMX6SDL_DRIVE_STRENGTH,
  97         .dram_sdqs1 = IMX6SDL_DRIVE_STRENGTH,
  98         .dram_sdqs2 = IMX6SDL_DRIVE_STRENGTH,
  99         .dram_sdqs3 = IMX6SDL_DRIVE_STRENGTH,
 100         .dram_sdqs4 = IMX6SDL_DRIVE_STRENGTH,
 101         .dram_sdqs5 = IMX6SDL_DRIVE_STRENGTH,
 102         .dram_sdqs6 = IMX6SDL_DRIVE_STRENGTH,
 103         .dram_sdqs7 = IMX6SDL_DRIVE_STRENGTH,
 104         .dram_dqm0 = IMX6SDL_DRIVE_STRENGTH,
 105         .dram_dqm1 = IMX6SDL_DRIVE_STRENGTH,
 106         .dram_dqm2 = IMX6SDL_DRIVE_STRENGTH,
 107         .dram_dqm3 = IMX6SDL_DRIVE_STRENGTH,
 108         .dram_dqm4 = IMX6SDL_DRIVE_STRENGTH,
 109         .dram_dqm5 = IMX6SDL_DRIVE_STRENGTH,
 110         .dram_dqm6 = IMX6SDL_DRIVE_STRENGTH,
 111         .dram_dqm7 = IMX6SDL_DRIVE_STRENGTH,
 112 };
 113
 114 /* configure MX6SOLO/DUALLITE mmdc GRP io registers */
 115 struct mx6sdl_iomux_grp_regs mx6sdl_grp_ioregs = {
 116         .grp_ddr_type = 0x000c0000,
 117         .grp_ddrmode_ctl = 0x00020000,
 118         .grp_ddrpke = 0x00000000,
 119         .grp_addds = IMX6SDL_DRIVE_STRENGTH,
 120         .grp_ctlds = IMX6SDL_DRIVE_STRENGTH,
 121         .grp_ddrmode = 0x00020000,
 122         .grp_b0ds = IMX6SDL_DRIVE_STRENGTH,
 123         .grp_b1ds = IMX6SDL_DRIVE_STRENGTH,
 124         .grp_b2ds = IMX6SDL_DRIVE_STRENGTH,
 125         .grp_b3ds = IMX6SDL_DRIVE_STRENGTH,
 126         .grp_b4ds = IMX6SDL_DRIVE_STRENGTH,
 127         .grp_b5ds = IMX6SDL_DRIVE_STRENGTH,
 128         .grp_b6ds = IMX6SDL_DRIVE_STRENGTH,
 129         .grp_b7ds = IMX6SDL_DRIVE_STRENGTH,
 130 };
 131
 132 /* H5T04G63AFR-PB */
 133 static struct mx6_ddr3_cfg h5t04g63afr = {
 134         .mem_speed = 1600,
 135         .density = 4,
 136         .width = 16,
 137         .banks = 8,
 138         .rowaddr = 15,
 139         .coladdr = 10,
 140         .pagesz = 2,
 141         .trcd = 1375,
 142         .trcmin = 4875,
 143         .trasmin = 3500,
 144 };
 145
 146 /* H5TQ2G63DFR-H9 */
 147 static struct mx6_ddr3_cfg h5tq2g63dfr = {
 148         .mem_speed = 1333,
 149         .density = 2,
 150         .width = 16,
 151         .banks = 8,
 152         .rowaddr = 14,
 153         .coladdr = 10,
 154         .pagesz = 2,
 155         .trcd = 1350,
 156         .trcmin = 4950,
 157         .trasmin = 3600,
 158 };
 159
 160 static struct mx6_mmdc_calibration mx6q_2g_mmdc_calib = {
 161         .p0_mpwldectrl0 = 0x001f001f,
 162         .p0_mpwldectrl1 = 0x001f001f,
 163         .p1_mpwldectrl0 = 0x001f001f,
 164         .p1_mpwldectrl1 = 0x001f001f,
 165         .p0_mpdgctrl0 = 0x4301030d,
 166         .p0_mpdgctrl1 = 0x03020277,
 167         .p1_mpdgctrl0 = 0x4300030a,
 168         .p1_mpdgctrl1 = 0x02780248,
 169         .p0_mprddlctl = 0x4536393b,
 170         .p1_mprddlctl = 0x36353441,
 171         .p0_mpwrdlctl = 0x41414743,
 172         .p1_mpwrdlctl = 0x462f453f,
 173 };
 174
 175 /* DDR 64bit 2GB */
 176 static struct mx6_ddr_sysinfo mem_q = {
 177         .dsize          = 2,
 178         .cs1_mirror     = 0,
 179         /* config for full 4GB range so that get_mem_size() works */
 180         .cs_density     = 32,
 181         .ncs            = 1,
 182         .bi_on          = 1,
 183         .rtt_nom        = 1,
 184         .rtt_wr         = 0,
 185         .ralat          = 5,
 186         .walat          = 0,
 187         .mif3_mode      = 3,
 188         .rst_to_cke     = 0x23,
 189         .sde_to_rst     = 0x10,
 190         .refsel = 1,    /* Refresh cycles at 32KHz */
 191         .refr = 3,      /* 4 refresh commands per refresh cycle */
 192 };
 193
 194 static struct mx6_mmdc_calibration mx6dl_1g_mmdc_calib = {
 195         .p0_mpwldectrl0 = 0x001f001f,
 196         .p0_mpwldectrl1 = 0x001f001f,
 197         .p1_mpwldectrl0 = 0x001f001f,
 198         .p1_mpwldectrl1 = 0x001f001f,
 199         .p0_mpdgctrl0 = 0x420e020e,
 200         .p0_mpdgctrl1 = 0x02000200,
 201         .p1_mpdgctrl0 = 0x42020202,
 202         .p1_mpdgctrl1 = 0x01720172,
 203         .p0_mprddlctl = 0x494c4f4c,
 204         .p1_mprddlctl = 0x4a4c4c49,
 205         .p0_mpwrdlctl = 0x3f3f3133,
 206         .p1_mpwrdlctl = 0x39373f2e,
 207 };
 208
 209 static struct mx6_mmdc_calibration mx6s_512m_mmdc_calib = {
 210         .p0_mpwldectrl0 = 0x0040003c,
 211         .p0_mpwldectrl1 = 0x0032003e,
 212         .p0_mpdgctrl0 = 0x42350231,
 213         .p0_mpdgctrl1 = 0x021a0218,
 214         .p0_mprddlctl = 0x4b4b4e49,
 215         .p0_mpwrdlctl = 0x3f3f3035,
 216 };
 217
 218 /* DDR 64bit 1GB */
 219 static struct mx6_ddr_sysinfo mem_dl = {
 220         .dsize          = 2,
 221         .cs1_mirror     = 0,
 222         /* config for full 4GB range so that get_mem_size() works */
 223         .cs_density     = 32,
 224         .ncs            = 1,
 225         .bi_on          = 1,
 226         .rtt_nom        = 1,
 227         .rtt_wr         = 0,
 228         .ralat          = 5,
 229         .walat          = 0,
 230         .mif3_mode      = 3,
 231         .rst_to_cke     = 0x23,
 232         .sde_to_rst     = 0x10,
 233         .refsel = 1,    /* Refresh cycles at 32KHz */
 234         .refr = 3,      /* 4 refresh commands per refresh cycle */
 235 };
 236
 237 /* DDR 32bit 512MB */
 238 static struct mx6_ddr_sysinfo mem_s = {
 239         .dsize          = 1,
 240         .cs1_mirror     = 0,
 241         /* config for full 4GB range so that get_mem_size() works */
 242         .cs_density     = 32,
 243         .ncs            = 1,
 244         .bi_on          = 1,
 245         .rtt_nom        = 1,
 246         .rtt_wr         = 0,
 247         .ralat          = 5,
 248         .walat          = 0,
 249         .mif3_mode      = 3,
 250         .rst_to_cke     = 0x23,
 251         .sde_to_rst     = 0x10,
 252         .refsel = 1,    /* Refresh cycles at 32KHz */
 253         .refr = 3,      /* 4 refresh commands per refresh cycle */
 254 };
 255
 256 static void ccgr_init(void)
 257 {
 258         struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 259
 260         writel(0x00C03F3F, &ccm->CCGR0);
 261         writel(0x0030FC03, &ccm->CCGR1);
 262         writel(0x0FFFC000, &ccm->CCGR2);
 263         writel(0x3FF00000, &ccm->CCGR3);
 264         writel(0x00FFF300, &ccm->CCGR4);
 265         writel(0x0F0000C3, &ccm->CCGR5);
 266         writel(0x000003FF, &ccm->CCGR6);
 267 }
 268
 269 static void gpr_init(void)
 270 {
 271         struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
 272
 273         /* enable AXI cache for VDOA/VPU/IPU */
 274         writel(0xF00000CF, &iomux->gpr[4]);
 275         /* set IPU AXI-id0 Qos=0xf(bypass) AXI-id1 Qos=0x7 */
 276         writel(0x007F007F, &iomux->gpr[6]);
 277         writel(0x007F007F, &iomux->gpr[7]);
 278 }
 279
 280 static void spl_dram_init(void)
 281 {
 282         if (is_cpu_type(MXC_CPU_MX6SOLO)) {
 283                 mx6sdl_dram_iocfg(32, &mx6sdl_ddr_ioregs, &mx6sdl_grp_ioregs);
 284                 mx6_dram_cfg(&mem_s, &mx6s_512m_mmdc_calib, &h5tq2g63dfr);
 285         } else if (is_cpu_type(MXC_CPU_MX6DL)) {
 286                 mx6sdl_dram_iocfg(64, &mx6sdl_ddr_ioregs, &mx6sdl_grp_ioregs);
 287                 mx6_dram_cfg(&mem_dl, &mx6dl_1g_mmdc_calib, &h5tq2g63dfr);
 288         } else if (is_cpu_type(MXC_CPU_MX6Q)) {
 289                 mx6dq_dram_iocfg(64, &mx6dq_ddr_ioregs, &mx6dq_grp_ioregs);
 290                 mx6_dram_cfg(&mem_q, &mx6q_2g_mmdc_calib, &h5t04g63afr);
 291         }
 292
 293         udelay(100);
 294 }
 295
 296 void board_init_f(ulong dummy)
 297 {
 298         ccgr_init();
 299
 300         /* setup AIPS and disable watchdog */
 301         arch_cpu_init();
 302
 303         gpr_init();
 304
 305         /* iomux */
 306         board_early_init_f();
 307
 308         /* setup GP timer */
 309         timer_init();
 310
 311         /* UART clocks enabled and gd valid - init serial console */
 312         preloader_console_init();
 313
 314         /* DDR initialization */
 315         spl_dram_init();
 316
 317         /* Clear the BSS. */
 318         memset(__bss_start, 0, __bss_end - __bss_start);
 319
 320         /* load/boot image from boot device */
 321         board_init_r(NULL, 0);
 322 }
 323 #endif