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