git.sur5r.net Git - u-boot/blob - 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 void board_init_f(ulong dummy)
  45 {
  46         struct udevice *dev;
  47         int ret;
  48
  49         /*
  50          * Debug UART can be used from here if required:
  51          *
  52          * debug_uart_init();
  53          * printch('a');
  54          * printhex8(0x1234);
  55          * printascii("string");
  56          */
  57         debug_uart_init();
  58         printascii("SPL Init");
  59
  60         ret = spl_early_init();
  61         if (ret) {
  62                 debug("spl_early_init() failed: %d\n", ret);
  63                 hang();
  64         }
  65
  66         rockchip_timer_init();
  67         printf("timer init done\n");
  68         ret = uclass_get_device(UCLASS_RAM, 0, &dev);
  69         if (ret) {
  70                 printf("DRAM init failed: %d\n", ret);
  71                 return;
  72         }
  73
  74 #if defined(CONFIG_ROCKCHIP_SPL_BACK_TO_BROM) && !defined(CONFIG_SPL_BOARD_INIT)
  75         back_to_bootrom();
  76 #endif
  77 }