board/engicam/common/board.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2016 Amarula Solutions B.V.
   4  * Copyright (C) 2016 Engicam S.r.l.
   5  * Author: Jagan Teki <jagan@amarulasolutions.com>
   6  */
   7
   8 #include <common.h>
   9 #include <command.h>
  10 #include <env.h>
  11 #include <init.h>
  12 #include <mmc.h>
  13 #include <asm/arch/clock.h>
  14 #include <asm/arch/imx-regs.h>
  15 #include <asm/arch/sys_proto.h>
  16 #include <watchdog.h>
  17
  18 #include "board.h"
  19
  20 DECLARE_GLOBAL_DATA_PTR;
  21
  22 #ifdef CONFIG_ENV_IS_IN_MMC
  23 static void mmc_late_init(void)
  24 {
  25         char cmd[32];
  26         char mmcblk[32];
  27         u32 dev_no = mmc_get_env_dev();
  28
  29         env_set_ulong("mmcdev", dev_no);
  30
  31         /* Set mmcblk env */
  32         sprintf(mmcblk, "/dev/mmcblk%dp2 rootwait rw", dev_no);
  33         env_set("mmcroot", mmcblk);
  34
  35         sprintf(cmd, "mmc dev %d", dev_no);
  36         run_command(cmd, 0);
  37 }
  38 #endif
  39
  40 enum engicam_boards {
  41         IMX6Q_ICORE,
  42         IMX6DL_ICORE,
  43         IMX6Q_ICORE_MIPI,
  44         IMX6DL_ICORE_MIPI,
  45         IMX6Q_ICORE_RQS,
  46         IMX6DL_ICORE_RQS,
  47         IMX6UL_GEAM,
  48         IMX6UL_ISIOT_EMMC,
  49         IMX6UL_ISIOT_NAND,
  50         ENGICAM_BOARDS,
  51 };
  52
  53 static const char * const board_fdt_file[ENGICAM_BOARDS] = {
  54         [IMX6Q_ICORE] = "imx6q-icore.dtb",
  55         [IMX6DL_ICORE] = "imx6dl-icore.dtb",
  56         [IMX6Q_ICORE_MIPI] = "imx6q-icore-mipi.dtb",
  57         [IMX6DL_ICORE_MIPI] = "imx6dl-icore-mipi.dtb",
  58         [IMX6Q_ICORE_RQS] = "imx6q-icore-rqs.dtb",
  59         [IMX6DL_ICORE_RQS] = "imx6dl-icore-rqs.dtb",
  60         [IMX6UL_GEAM] = "imx6ul-geam.dtb",
  61         [IMX6UL_ISIOT_EMMC] = "imx6ul-isiot-emmc.dtb",
  62         [IMX6UL_ISIOT_NAND] = "imx6ul-isiot-nand.dtb",
  63 };
  64
  65 static int setenv_fdt_file(int board_detected)
  66 {
  67         if (board_detected < 0 || board_detected >= ENGICAM_BOARDS)
  68                 return -EINVAL;
  69
  70         if (!board_fdt_file[board_detected])
  71                 return -ENODEV;
  72
  73         env_set("fdt_file", board_fdt_file[board_detected]);
  74         return 0;
  75 }
  76
  77 static enum engicam_boards engicam_board_detect(void)
  78 {
  79         const char *cmp_dtb = CONFIG_DEFAULT_DEVICE_TREE;
  80
  81         if (!strcmp(cmp_dtb, "imx6q-icore")) {
  82                 if (is_mx6dq())
  83                         return IMX6Q_ICORE;
  84                 else if (is_mx6dl() || is_mx6solo())
  85                         return IMX6DL_ICORE;
  86         } else if (!strcmp(cmp_dtb, "imx6q-icore-mipi")) {
  87                 if (is_mx6dq())
  88                         return IMX6Q_ICORE_MIPI;
  89                 else if (is_mx6dl() || is_mx6solo())
  90                         return IMX6DL_ICORE_MIPI;
  91         } else if (!strcmp(cmp_dtb, "imx6q-icore-rqs")) {
  92                 if (is_mx6dq())
  93                         return IMX6Q_ICORE_RQS;
  94                 else if (is_mx6dl() || is_mx6solo())
  95                         return IMX6DL_ICORE_RQS;
  96         } else if (!strcmp(cmp_dtb, "imx6ul-geam"))
  97                         return IMX6UL_GEAM;
  98         else if (!strcmp(cmp_dtb, "imx6ul-isiot-emmc"))
  99                         return IMX6UL_ISIOT_EMMC;
 100         else if (!strcmp(cmp_dtb, "imx6ul-isiot-nand"))
 101                         return IMX6UL_ISIOT_NAND;
 102
 103         return -EINVAL;
 104 }
 105
 106 static int fixup_enet_clock(enum engicam_boards board_detected)
 107 {
 108         struct iomuxc *iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
 109         int clk_internal = 0;
 110
 111         switch (board_detected) {
 112         case IMX6Q_ICORE_MIPI:
 113         case IMX6DL_ICORE_MIPI:
 114                 clk_internal = 1;
 115                 break;
 116         default:
 117                 break;
 118         }
 119
 120         /* set gpr1[21] to select anatop clock */
 121         debug("fixup_enet_clock %d\n", clk_internal);
 122         clrsetbits_le32(&iomuxc_regs->gpr[1], 0x1 << 21, clk_internal << 21);
 123
 124         if (!clk_internal) {
 125                 /* clock is external */
 126                 return 0;
 127         }
 128
 129         return enable_fec_anatop_clock(0, ENET_50MHZ);
 130 }
 131
 132 int board_late_init(void)
 133 {
 134         enum engicam_boards board_detected = IMX6Q_ICORE;
 135
 136         switch ((imx6_src_get_boot_mode() & IMX6_BMODE_MASK) >>
 137                         IMX6_BMODE_SHIFT) {
 138         case IMX6_BMODE_SD:
 139         case IMX6_BMODE_ESD:
 140         case IMX6_BMODE_MMC:
 141         case IMX6_BMODE_EMMC:
 142 #ifdef CONFIG_ENV_IS_IN_MMC
 143                 mmc_late_init();
 144 #endif
 145                 env_set("modeboot", "mmcboot");
 146                 break;
 147         case IMX6_BMODE_NAND_MIN ... IMX6_BMODE_NAND_MAX:
 148                 env_set("modeboot", "nandboot");
 149                 break;
 150         default:
 151                 env_set("modeboot", "");
 152                 break;
 153         }
 154
 155         if (is_mx6ul())
 156                 env_set("console", "ttymxc0");
 157         else
 158                 env_set("console", "ttymxc3");
 159
 160         board_detected = engicam_board_detect();
 161         if (board_detected < 0)
 162                 hang();
 163
 164         fixup_enet_clock(board_detected);
 165         setenv_fdt_file(board_detected);
 166
 167 #ifdef CONFIG_HW_WATCHDOG
 168         hw_watchdog_init();
 169 #endif
 170
 171         return 0;
 172 }
 173
 174 int board_init(void)
 175 {
 176         /* Address of boot parameters */
 177         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 178
 179 #ifdef CONFIG_NAND_MXS
 180         setup_gpmi_nand();
 181 #endif
 182
 183 #ifdef CONFIG_VIDEO_IPUV3
 184         setup_display();
 185 #endif
 186
 187         return 0;
 188 }
 189
 190 int dram_init(void)
 191 {
 192         gd->ram_size = imx_ddr_size();
 193
 194         return 0;
 195 }