arch/arm/mach-rockchip/rk322x-board-spl.c

   1 /*
   2  * (C) Copyright 2017 Rockchip Electronics Co., Ltd
   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 <ram.h>
  11 #include <spl.h>
  12 #include <asm/io.h>
  13 #include <asm/arch/bootrom.h>
  14 #include <asm/arch/cru_rk322x.h>
  15 #include <asm/arch/grf_rk322x.h>
  16 #include <asm/arch/hardware.h>
  17 #include <asm/arch/timer.h>
  18 #include <asm/arch/uart.h>
  19
  20 u32 spl_boot_device(void)
  21 {
  22         return BOOT_DEVICE_MMC1;
  23 }
  24 DECLARE_GLOBAL_DATA_PTR;
  25
  26 #define GRF_BASE        0x11000000
  27 #define SGRF_BASE       0x10140000
  28
  29 #define DEBUG_UART_BASE 0x11030000
  30
  31 void board_debug_uart_init(void)
  32 {
  33 static struct rk322x_grf * const grf = (void *)GRF_BASE;
  34         /* Enable early UART2 channel 1 on the RK322x */
  35         rk_clrsetreg(&grf->gpio1b_iomux,
  36                      GPIO1B1_MASK | GPIO1B2_MASK,
  37                      GPIO1B2_UART21_SIN << GPIO1B2_SHIFT |
  38                      GPIO1B1_UART21_SOUT << GPIO1B1_SHIFT);
  39         /* Set channel C as UART2 input */
  40         rk_clrsetreg(&grf->con_iomux,
  41                      CON_IOMUX_UART2SEL_MASK,
  42                      CON_IOMUX_UART2SEL_21 << CON_IOMUX_UART2SEL_SHIFT);
  43 }
  44
  45 #define SGRF_DDR_CON0 0x10150000
  46 void board_init_f(ulong dummy)
  47 {
  48         struct udevice *dev;
  49         int ret;
  50
  51         /*
  52          * Debug UART can be used from here if required:
  53          *
  54          * debug_uart_init();
  55          * printch('a');
  56          * printhex8(0x1234);
  57          * printascii("string");
  58          */
  59         debug_uart_init();
  60         printascii("SPL Init");
  61
  62         ret = spl_early_init();
  63         if (ret) {
  64                 debug("spl_early_init() failed: %d\n", ret);
  65                 hang();
  66         }
  67
  68         rockchip_timer_init();
  69         printf("timer init done\n");
  70         ret = uclass_get_device(UCLASS_RAM, 0, &dev);
  71         if (ret) {
  72                 printf("DRAM init failed: %d\n", ret);
  73                 return;
  74         }
  75
  76         /* Disable the ddr secure region setting to make it non-secure */
  77         rk_clrreg(SGRF_DDR_CON0, 0x4000);
  78 #if defined(CONFIG_ROCKCHIP_SPL_BACK_TO_BROM) && !defined(CONFIG_SPL_BOARD_INIT)
  79         back_to_bootrom();
  80 #endif
  81 }