arch/arm/mach-rockchip/rk3288-board-tpl.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2017 Amarula Solutions
   4  */
   5
   6 #include <common.h>
   7 #include <debug_uart.h>
   8 #include <dm.h>
   9 #include <ram.h>
  10 #include <spl.h>
  11 #include <version.h>
  12 #include <asm/io.h>
  13 #include <asm/arch/bootrom.h>
  14 #include <asm/arch/clock.h>
  15 #include <asm/arch/grf_rk3288.h>
  16 #include <asm/arch/periph.h>
  17 #include <asm/arch/pmu_rk3288.h>
  18 #include <asm/arch/sys_proto.h>
  19 #include <asm/arch/timer.h>
  20
  21 #define GRF_BASE                0xff770000
  22 void board_init_f(ulong dummy)
  23 {
  24         struct udevice *dev;
  25         int ret;
  26
  27         /* Example code showing how to enable the debug UART on RK3288 */
  28         /* Enable early UART on the RK3288 */
  29         struct rk3288_grf * const grf = (void *)GRF_BASE;
  30
  31         rk_clrsetreg(&grf->gpio7ch_iomux, GPIO7C7_MASK << GPIO7C7_SHIFT |
  32                      GPIO7C6_MASK << GPIO7C6_SHIFT,
  33                      GPIO7C7_UART2DBG_SOUT << GPIO7C7_SHIFT |
  34                      GPIO7C6_UART2DBG_SIN << GPIO7C6_SHIFT);
  35         /*
  36          * Debug UART can be used from here if required:
  37          *
  38          * debug_uart_init();
  39          * printch('a');
  40          * printhex8(0x1234);
  41          * printascii("string");
  42          */
  43         debug_uart_init();
  44
  45         ret = spl_early_init();
  46         if (ret) {
  47                 debug("spl_early_init() failed: %d\n", ret);
  48                 hang();
  49         }
  50
  51         rockchip_timer_init();
  52         configure_l2ctlr();
  53
  54         ret = rockchip_get_clk(&dev);
  55         if (ret) {
  56                 debug("CLK init failed: %d\n", ret);
  57                 return;
  58         }
  59
  60         ret = uclass_get_device(UCLASS_RAM, 0, &dev);
  61         if (ret) {
  62                 debug("DRAM init failed: %d\n", ret);
  63                 return;
  64         }
  65 }
  66
  67 void board_return_to_bootrom(void)
  68 {
  69         back_to_bootrom(BROM_BOOT_NEXTSTAGE);
  70 }
  71
  72 u32 spl_boot_device(void)
  73 {
  74         return BOOT_DEVICE_BOOTROM;
  75 }
  76
  77 void spl_board_init(void)
  78 {
  79         puts("\nU-Boot TPL " PLAIN_VERSION " (" U_BOOT_DATE " - " \
  80                                 U_BOOT_TIME ")\n");
  81 }