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

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2015-2019 Rockchip Electronics Co., Ltd
   4  */
   5
   6 #include <common.h>
   7 #include <debug_uart.h>
   8 #include <asm/io.h>
   9 #include <asm/arch-rockchip/bootrom.h>
  10 #include <asm/arch-rockchip/sdram_rk3036.h>
  11
  12 #define TIMER_LOAD_COUNT_L      0x00
  13 #define TIMER_LOAD_COUNT_H      0x04
  14 #define TIMER_CONTROL_REG       0x10
  15 #define TIMER_EN        0x1
  16 #define TIMER_FMODE     (0 << 1)
  17 #define TIMER_RMODE     (1 << 1)
  18
  19 void rockchip_stimer_init(void)
  20 {
  21         asm volatile("mcr p15, 0, %0, c14, c0, 0"
  22                      : : "r"(COUNTER_FREQUENCY));
  23
  24         writel(0, CONFIG_ROCKCHIP_STIMER_BASE + TIMER_CONTROL_REG);
  25         writel(0xffffffff, CONFIG_ROCKCHIP_STIMER_BASE);
  26         writel(0xffffffff, CONFIG_ROCKCHIP_STIMER_BASE + 4);
  27         writel(TIMER_EN | TIMER_FMODE, CONFIG_ROCKCHIP_STIMER_BASE +
  28                TIMER_CONTROL_REG);
  29 }
  30
  31 void board_init_f(ulong dummy)
  32 {
  33 #ifdef CONFIG_DEBUG_UART
  34         debug_uart_init();
  35 #endif
  36
  37         /* Init secure timer */
  38         rockchip_stimer_init();
  39         /* Init ARM arch timer in arch/arm/cpu/armv7/arch_timer.c */
  40         timer_init();
  41
  42         sdram_init();
  43
  44         /* return to maskrom */
  45         back_to_bootrom(BROM_BOOT_NEXTSTAGE);
  46 }
  47
  48 /* Place Holders */
  49 void board_init_r(gd_t *id, ulong dest_addr)
  50 {
  51         /*
  52          * Function attribute is no-return
  53          * This Function never executes
  54          */
  55         while (1)
  56                 ;
  57 }