arch/arm/mach-rockchip/rk3368-board-spl.c

   1 /*
   2  * (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <debug_uart.h>
   9 #include <dm.h>
  10 #include <dm/pinctrl.h>
  11 #include <ram.h>
  12 #include <spl.h>
  13 #include <asm/io.h>
  14 #include <asm/arch/cru_rk3368.h>
  15 #include <asm/arch/grf_rk3368.h>
  16 #include <asm/arch/hardware.h>
  17 #include <asm/arch/periph.h>
  18 #include <asm/arch/timer.h>
  19
  20 DECLARE_GLOBAL_DATA_PTR;
  21
  22 /*
  23  * The ARMv8 generic timer uses the STIMER1 as its clock-source.
  24  * Set up the STIMER1 to free-running (i.e. auto-reload) to start
  25  * the generic timer counting (if we don't do this, udelay will not
  26  * work and block indefinitively).
  27  */
  28 static void secure_timer_init(void)
  29 {
  30         struct rk_timer * const stimer1 =
  31                 (struct rk_timer * const)0xff830020;
  32         const u32 TIMER_EN = BIT(0);
  33
  34         writel(~0u, &stimer1->timer_load_count0);
  35         writel(~0u, &stimer1->timer_load_count1);
  36         writel(TIMER_EN, &stimer1->timer_ctrl_reg);
  37 }
  38
  39 void board_debug_uart_init(void)
  40 {
  41 }
  42
  43 void board_init_f(ulong dummy)
  44 {
  45         struct udevice *pinctrl;
  46         struct udevice *dev;
  47         int ret;
  48
  49         ret = spl_early_init();
  50         if (ret) {
  51                 debug("spl_early_init() failed: %d\n", ret);
  52                 hang();
  53         }
  54
  55         /* Make sure the ARMv8 generic timer counts */
  56         secure_timer_init();
  57
  58         /* Set up our preloader console */
  59         ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
  60         if (ret) {
  61                 error("%s: pinctrl init failed: %d\n", __func__, ret);
  62                 hang();
  63         }
  64
  65         ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_UART0);
  66         if (ret) {
  67                 error("%s: failed to set up console UART\n", __func__);
  68                 hang();
  69         }
  70
  71         preloader_console_init();
  72
  73         ret = uclass_get_device(UCLASS_RAM, 0, &dev);
  74         if (ret) {
  75                 debug("DRAM init failed: %d\n", ret);
  76                 return;
  77         }
  78 }
  79
  80 u32 spl_boot_mode(const u32 boot_device)
  81 {
  82         return MMCSD_MODE_RAW;
  83 }
  84
  85 u32 spl_boot_device(void)
  86 {
  87         return BOOT_DEVICE_MMC1;
  88 }
  89
  90 #ifdef CONFIG_SPL_LOAD_FIT
  91 int board_fit_config_name_match(const char *name)
  92 {
  93         /* Just empty function now - can't decide what to choose */
  94         debug("%s: %s\n", __func__, name);
  95
  96         return 0;
  97 }
  98 #endif