arch/arm/mach-rockchip/spl.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2019 Rockchip Electronics Co., Ltd
   4  */
   5
   6 #include <common.h>
   7 #include <debug_uart.h>
   8 #include <dm.h>
   9 #include <hang.h>
  10 #include <ram.h>
  11 #include <spl.h>
  12 #include <asm/arch-rockchip/bootrom.h>
  13 #include <asm/io.h>
  14
  15 DECLARE_GLOBAL_DATA_PTR;
  16
  17 int board_return_to_bootrom(struct spl_image_info *spl_image,
  18                             struct spl_boot_device *bootdev)
  19 {
  20         back_to_bootrom(BROM_BOOT_NEXTSTAGE);
  21
  22         return 0;
  23 }
  24
  25 __weak const char * const boot_devices[BROM_LAST_BOOTSOURCE + 1] = {
  26 };
  27
  28 const char *board_spl_was_booted_from(void)
  29 {
  30         u32  bootdevice_brom_id = readl(BROM_BOOTSOURCE_ID_ADDR);
  31         const char *bootdevice_ofpath = NULL;
  32
  33         if (bootdevice_brom_id < ARRAY_SIZE(boot_devices))
  34                 bootdevice_ofpath = boot_devices[bootdevice_brom_id];
  35
  36         if (bootdevice_ofpath)
  37                 debug("%s: brom_bootdevice_id %x maps to '%s'\n",
  38                       __func__, bootdevice_brom_id, bootdevice_ofpath);
  39         else
  40                 debug("%s: failed to resolve brom_bootdevice_id %x\n",
  41                       __func__, bootdevice_brom_id);
  42
  43         return bootdevice_ofpath;
  44 }
  45
  46 u32 spl_boot_device(void)
  47 {
  48         u32 boot_device = BOOT_DEVICE_MMC1;
  49
  50 #if defined(CONFIG_TARGET_CHROMEBOOK_JERRY) || \
  51                 defined(CONFIG_TARGET_CHROMEBIT_MICKEY) || \
  52                 defined(CONFIG_TARGET_CHROMEBOOK_MINNIE)
  53         return BOOT_DEVICE_SPI;
  54 #endif
  55         if (CONFIG_IS_ENABLED(ROCKCHIP_BACK_TO_BROM))
  56                 return BOOT_DEVICE_BOOTROM;
  57
  58         return boot_device;
  59 }
  60
  61 u32 spl_mmc_boot_mode(const u32 boot_device)
  62 {
  63         return MMCSD_MODE_RAW;
  64 }
  65
  66 #if !defined(CONFIG_ROCKCHIP_RK3188)
  67 #define TIMER_LOAD_COUNT_L      0x00
  68 #define TIMER_LOAD_COUNT_H      0x04
  69 #define TIMER_CONTROL_REG       0x10
  70 #define TIMER_EN        0x1
  71 #define TIMER_FMODE     BIT(0)
  72 #define TIMER_RMODE     BIT(1)
  73
  74 __weak void rockchip_stimer_init(void)
  75 {
  76         /* If Timer already enabled, don't re-init it */
  77         u32 reg = readl(CONFIG_ROCKCHIP_STIMER_BASE + TIMER_CONTROL_REG);
  78
  79         if (reg & TIMER_EN)
  80                 return;
  81 #ifndef CONFIG_ARM64
  82         asm volatile("mcr p15, 0, %0, c14, c0, 0"
  83                      : : "r"(COUNTER_FREQUENCY));
  84 #endif
  85         writel(0, CONFIG_ROCKCHIP_STIMER_BASE + TIMER_CONTROL_REG);
  86         writel(0xffffffff, CONFIG_ROCKCHIP_STIMER_BASE);
  87         writel(0xffffffff, CONFIG_ROCKCHIP_STIMER_BASE + 4);
  88         writel(TIMER_EN | TIMER_FMODE, CONFIG_ROCKCHIP_STIMER_BASE +
  89                TIMER_CONTROL_REG);
  90 }
  91 #endif
  92
  93 __weak int board_early_init_f(void)
  94 {
  95         return 0;
  96 }
  97
  98 __weak int arch_cpu_init(void)
  99 {
 100         return 0;
 101 }
 102
 103 void board_init_f(ulong dummy)
 104 {
 105         int ret;
 106 #if !defined(CONFIG_TPL) || defined(CONFIG_SPL_OS_BOOT)
 107         struct udevice *dev;
 108 #endif
 109
 110 #ifdef CONFIG_DEBUG_UART
 111         /*
 112          * Debug UART can be used from here if required:
 113          *
 114          * debug_uart_init();
 115          * printch('a');
 116          * printhex8(0x1234);
 117          * printascii("string");
 118          */
 119         debug_uart_init();
 120         debug("\nspl:debug uart enabled in %s\n", __func__);
 121 #endif
 122
 123         board_early_init_f();
 124
 125         ret = spl_early_init();
 126         if (ret) {
 127                 printf("spl_early_init() failed: %d\n", ret);
 128                 hang();
 129         }
 130         arch_cpu_init();
 131 #if !defined(CONFIG_ROCKCHIP_RK3188)
 132         rockchip_stimer_init();
 133 #endif
 134 #ifdef CONFIG_SYS_ARCH_TIMER
 135         /* Init ARM arch timer in arch/arm/cpu/armv7/arch_timer.c */
 136         timer_init();
 137 #endif
 138 #if !defined(CONFIG_TPL) || defined(CONFIG_SPL_OS_BOOT)
 139         debug("\nspl:init dram\n");
 140         ret = uclass_get_device(UCLASS_RAM, 0, &dev);
 141         if (ret) {
 142                 printf("DRAM init failed: %d\n", ret);
 143                 return;
 144         }
 145 #endif
 146         preloader_console_init();
 147 }
 148
 149 #ifdef CONFIG_SPL_LOAD_FIT
 150 int __weak board_fit_config_name_match(const char *name)
 151 {
 152         /* Just empty function now - can't decide what to choose */
 153         debug("%s: %s\n", __func__, name);
 154
 155         return 0;
 156 }
 157 #endif