board/beacon/imx8mm/spl.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2
   3 #include <common.h>
   4 #include <cpu_func.h>
   5 #include <hang.h>
   6 #include <init.h>
   7 #include <log.h>
   8 #include <spl.h>
   9 #include <asm/io.h>
  10 #include <asm/mach-imx/iomux-v3.h>
  11 #include <asm/arch/clock.h>
  12 #include <asm/arch/imx8mm_pins.h>
  13 #include <asm/arch/sys_proto.h>
  14 #include <asm/mach-imx/boot_mode.h>
  15 #include <asm/arch/ddr.h>
  16
  17 #include <dm/uclass.h>
  18 #include <dm/device.h>
  19 #include <dm/uclass-internal.h>
  20 #include <dm/device-internal.h>
  21
  22 #include <power/pmic.h>
  23 #include <power/bd71837.h>
  24
  25 DECLARE_GLOBAL_DATA_PTR;
  26
  27 int spl_board_boot_device(enum boot_device boot_dev_spl)
  28 {
  29         switch (boot_dev_spl) {
  30         case SD2_BOOT:
  31         case MMC2_BOOT:
  32                 return BOOT_DEVICE_MMC1;
  33         case SD3_BOOT:
  34         case MMC3_BOOT:
  35                 return BOOT_DEVICE_MMC2;
  36         default:
  37                 return BOOT_DEVICE_NONE;
  38         }
  39 }
  40
  41 static void spl_dram_init(void)
  42 {
  43         ddr_init(&dram_timing);
  44 }
  45
  46 void spl_board_init(void)
  47 {
  48         debug("Normal Boot\n");
  49 }
  50
  51 #ifdef CONFIG_SPL_LOAD_FIT
  52 int board_fit_config_name_match(const char *name)
  53 {
  54         /* Just empty function now - can't decide what to choose */
  55         debug("%s: %s\n", __func__, name);
  56
  57         return 0;
  58 }
  59 #endif
  60
  61 #define UART_PAD_CTRL   (PAD_CTL_DSE6 | PAD_CTL_FSEL1)
  62 #define WDOG_PAD_CTRL   (PAD_CTL_DSE6 | PAD_CTL_ODE | PAD_CTL_PUE | PAD_CTL_PE)
  63
  64 static iomux_v3_cfg_t const uart_pads[] = {
  65         IMX8MM_PAD_UART2_RXD_UART2_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
  66         IMX8MM_PAD_UART2_TXD_UART2_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
  67 };
  68
  69 static iomux_v3_cfg_t const wdog_pads[] = {
  70         IMX8MM_PAD_GPIO1_IO02_WDOG1_WDOG_B  | MUX_PAD_CTRL(WDOG_PAD_CTRL),
  71 };
  72
  73 int board_early_init_f(void)
  74 {
  75         struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR;
  76
  77         imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads));
  78
  79         set_wdog_reset(wdog);
  80
  81         imx_iomux_v3_setup_multiple_pads(uart_pads, ARRAY_SIZE(uart_pads));
  82
  83         return 0;
  84 }
  85
  86 static int power_init_board(void)
  87 {
  88         struct udevice *dev;
  89         int ret;
  90
  91         ret = pmic_get("pmic@4b", &dev);
  92         if (ret == -ENODEV) {
  93                 puts("No pmic\n");
  94                 return 0;
  95         }
  96         if (ret != 0)
  97                 return ret;
  98
  99         /* decrease RESET key long push time from the default 10s to 10ms */
 100         pmic_reg_write(dev, BD718XX_PWRONCONFIG1, 0x0);
 101
 102         /* unlock the PMIC regs */
 103         pmic_reg_write(dev, BD718XX_REGLOCK, 0x1);
 104
 105         /* increase VDD_SOC to typical value 0.85v before first DRAM access */
 106         pmic_reg_write(dev, BD718XX_BUCK1_VOLT_RUN, 0x0f);
 107
 108         /* increase VDD_DRAM to 0.975v for 3Ghz DDR */
 109         pmic_reg_write(dev, BD718XX_1ST_NODVS_BUCK_VOLT, 0x83);
 110
 111         /* lock the PMIC regs */
 112         pmic_reg_write(dev, BD718XX_REGLOCK, 0x11);
 113
 114         return 0;
 115 }
 116
 117 void board_init_f(ulong dummy)
 118 {
 119         struct udevice *dev;
 120         int ret;
 121
 122         arch_cpu_init();
 123
 124         init_uart_clk(1);
 125
 126         board_early_init_f();
 127
 128         timer_init();
 129
 130         preloader_console_init();
 131
 132         /* Clear the BSS. */
 133         memset(__bss_start, 0, __bss_end - __bss_start);
 134
 135         ret = spl_early_init();
 136         if (ret) {
 137                 debug("spl_early_init() failed: %d\n", ret);
 138                 hang();
 139         }
 140
 141         ret = uclass_get_device_by_name(UCLASS_CLK,
 142                                         "clock-controller@30380000",
 143                                         &dev);
 144         if (ret < 0) {
 145                 printf("Failed to find clock node. Check device tree\n");
 146                 hang();
 147         }
 148
 149         enable_tzc380();
 150
 151         power_init_board();
 152
 153         /* DDR initialization */
 154         spl_dram_init();
 155
 156         board_init_r(NULL, 0);
 157 }