LXR uboot/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
  22void 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
  67void board_return_to_bootrom(void)
  68{
  69        back_to_bootrom(BROM_BOOT_NEXTSTAGE);
  70}
  71
  72u32 spl_boot_device(void)
  73{
  74        return BOOT_DEVICE_BOOTROM;
  75}
  76
  77void spl_board_init(void)
  78{
  79        puts("\nU-Boot TPL " PLAIN_VERSION " (" U_BOOT_DATE " - " \
  80                                U_BOOT_TIME ")\n");
  81}
  82