arch/arm/mach-rockchip/rk3188-board-spl.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2015 Google, Inc
   4  */
   5
   6 #include <clk.h>
   7 #include <common.h>
   8 #include <debug_uart.h>
   9 #include <dm.h>
  10 #include <fdtdec.h>
  11 #include <led.h>
  12 #include <malloc.h>
  13 #include <ram.h>
  14 #include <spl.h>
  15 #include <syscon.h>
  16 #include <asm/gpio.h>
  17 #include <asm/io.h>
  18 #include <asm/arch-rockchip/bootrom.h>
  19 #include <asm/arch-rockchip/clock.h>
  20 #include <asm/arch-rockchip/grf_rk3188.h>
  21 #include <asm/arch-rockchip/hardware.h>
  22 #include <asm/arch-rockchip/periph.h>
  23 #include <asm/arch-rockchip/pmu_rk3188.h>
  24 #include <asm/arch-rockchip/sdram.h>
  25 #include <dm/root.h>
  26 #include <dm/test.h>
  27 #include <dm/util.h>
  28 #include <power/regulator.h>
  29
  30 DECLARE_GLOBAL_DATA_PTR;
  31
  32 u32 spl_boot_device(void)
  33 {
  34 #if !CONFIG_IS_ENABLED(OF_PLATDATA)
  35         const void *blob = gd->fdt_blob;
  36         struct udevice *dev;
  37         const char *bootdev;
  38         int node;
  39         int ret;
  40
  41         bootdev = fdtdec_get_config_string(blob, "u-boot,boot0");
  42         debug("Boot device %s\n", bootdev);
  43         if (!bootdev)
  44                 goto fallback;
  45
  46         node = fdt_path_offset(blob, bootdev);
  47         if (node < 0) {
  48                 debug("node=%d\n", node);
  49                 goto fallback;
  50         }
  51         ret = device_get_global_by_ofnode(offset_to_ofnode(node), &dev);
  52         if (ret) {
  53                 debug("device at node %s/%d not found: %d\n", bootdev, node,
  54                       ret);
  55                 goto fallback;
  56         }
  57         debug("Found device %s\n", dev->name);
  58         switch (device_get_uclass_id(dev)) {
  59         case UCLASS_SPI_FLASH:
  60                 return BOOT_DEVICE_SPI;
  61         case UCLASS_MMC:
  62                 return BOOT_DEVICE_MMC1;
  63         default:
  64                 debug("Booting from device uclass '%s' not supported\n",
  65                       dev_get_uclass_name(dev));
  66         }
  67
  68 fallback:
  69 #endif
  70         return BOOT_DEVICE_MMC1;
  71 }
  72
  73 static int setup_arm_clock(void)
  74 {
  75         struct udevice *dev;
  76         struct clk clk;
  77         int ret;
  78
  79         ret = rockchip_get_clk(&dev);
  80         if (ret)
  81                 return ret;
  82
  83         clk.id = CLK_ARM;
  84         ret = clk_request(dev, &clk);
  85         if (ret < 0)
  86                 return ret;
  87
  88         ret = clk_set_rate(&clk, 600000000);
  89
  90         clk_free(&clk);
  91         return ret;
  92 }
  93
  94 void board_init_f(ulong dummy)
  95 {
  96         struct udevice *dev;
  97         int ret;
  98
  99 #ifdef CONFIG_DEBUG_UART
 100         /*
 101          * Debug UART can be used from here if required:
 102          *
 103          * debug_uart_init();
 104          * printch('a');
 105          * printhex8(0x1234);
 106          * printascii("string");
 107          */
 108         debug_uart_init();
 109         printascii("U-Boot SPL board init");
 110 #endif
 111
 112 #ifdef CONFIG_ROCKCHIP_USB_UART
 113         rk_clrsetreg(&grf->uoc0_con[0],
 114                      SIDDQ_MASK | UOC_DISABLE_MASK | COMMON_ON_N_MASK,
 115                      1 << SIDDQ_SHIFT | 1 << UOC_DISABLE_SHIFT |
 116                      1 << COMMON_ON_N_SHIFT);
 117         rk_clrsetreg(&grf->uoc0_con[2],
 118                      SOFT_CON_SEL_MASK, 1 << SOFT_CON_SEL_SHIFT);
 119         rk_clrsetreg(&grf->uoc0_con[3],
 120                      OPMODE_MASK | XCVRSELECT_MASK |
 121                      TERMSEL_FULLSPEED_MASK | SUSPENDN_MASK,
 122                      OPMODE_NODRIVING << OPMODE_SHIFT |
 123                      XCVRSELECT_FSTRANSC << XCVRSELECT_SHIFT |
 124                      1 << TERMSEL_FULLSPEED_SHIFT |
 125                      1 << SUSPENDN_SHIFT);
 126         rk_clrsetreg(&grf->uoc0_con[0],
 127                      BYPASSSEL_MASK | BYPASSDMEN_MASK,
 128                      1 << BYPASSSEL_SHIFT | 1 << BYPASSDMEN_SHIFT);
 129 #endif
 130
 131         ret = spl_early_init();
 132         if (ret) {
 133                 debug("spl_early_init() failed: %d\n", ret);
 134                 hang();
 135         }
 136
 137         ret = rockchip_get_clk(&dev);
 138         if (ret) {
 139                 debug("CLK init failed: %d\n", ret);
 140                 return;
 141         }
 142
 143         ret = uclass_get_device(UCLASS_RAM, 0, &dev);
 144         if (ret) {
 145                 debug("DRAM init failed: %d\n", ret);
 146                 return;
 147         }
 148
 149         setup_arm_clock();
 150 #if CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM) && !defined(CONFIG_SPL_BOARD_INIT)
 151         back_to_bootrom(BROM_BOOT_NEXTSTAGE);
 152 #endif
 153 }
 154
 155 static int setup_led(void)
 156 {
 157 #ifdef CONFIG_SPL_LED
 158         struct udevice *dev;
 159         char *led_name;
 160         int ret;
 161
 162         led_name = fdtdec_get_config_string(gd->fdt_blob, "u-boot,boot-led");
 163         if (!led_name)
 164                 return 0;
 165         ret = led_get_by_label(led_name, &dev);
 166         if (ret) {
 167                 debug("%s: get=%d\n", __func__, ret);
 168                 return ret;
 169         }
 170         ret = led_set_on(dev, 1);
 171         if (ret)
 172                 return ret;
 173 #endif
 174
 175         return 0;
 176 }
 177
 178 void spl_board_init(void)
 179 {
 180         int ret;
 181
 182         ret = setup_led();
 183         if (ret) {
 184                 debug("LED ret=%d\n", ret);
 185                 hang();
 186         }
 187
 188         preloader_console_init();
 189 #if CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM)
 190         back_to_bootrom(BROM_BOOT_NEXTSTAGE);
 191 #endif
 192         return;
 193 }