arch/arm/mach-rockchip/rk3036-board-spl.c

   1 /*
   2  * (C) Copyright 2015 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 <asm/io.h>
  10 #include <asm/arch/grf_rk3036.h>
  11 #include <asm/arch/hardware.h>
  12 #include <asm/arch/sdram_rk3036.h>
  13 #include <asm/arch/timer.h>
  14 #include <asm/arch/uart.h>
  15
  16 DECLARE_GLOBAL_DATA_PTR;
  17
  18 #define GRF_BASE        0x20008000
  19 static struct rk3036_grf * const grf = (void *)GRF_BASE;
  20
  21 #define DEBUG_UART_BASE 0x20068000
  22
  23 extern void back_to_bootrom(void);
  24
  25 void board_init_f(ulong dummy)
  26 {
  27 #ifdef EARLY_DEBUG
  28         /*
  29          * NOTE: sd card and debug uart use same iomux in rk3036,
  30          * so if you enable uart,
  31          * you can not boot from sdcard
  32          */
  33         rk_clrsetreg(&grf->gpio1c_iomux,
  34                      GPIO1C3_MASK << GPIO1C3_SHIFT |
  35                      GPIO1C2_MASK << GPIO1C2_SHIFT,
  36                      GPIO1C3_UART2_SOUT << GPIO1C3_SHIFT |
  37                      GPIO1C2_UART2_SIN << GPIO1C2_SHIFT);
  38         debug_uart_init();
  39 #endif
  40         rockchip_timer_init();
  41         sdram_init();
  42
  43         /* return to maskrom */
  44         back_to_bootrom();
  45 }
  46
  47 /* Place Holders */
  48 void board_init_r(gd_t *id, ulong dest_addr)
  49 {
  50         /*
  51          * Function attribute is no-return
  52          * This Function never executes
  53          */
  54         while (1)
  55                 ;
  56 }
  57
  58 void hang(void)
  59 {
  60         while (1)
  61                 ;
  62 }