arch/arm/mach-stm32mp/spl.c

   1 // SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
   2 /*
   3  * Copyright (C) 2018, STMicroelectronics - All Rights Reserved
   4  */
   5
   6 #include <common.h>
   7 #include <cpu_func.h>
   8 #include <dm.h>
   9 #include <hang.h>
  10 #include <init.h>
  11 #include <log.h>
  12 #include <spl.h>
  13 #include <asm/cache.h>
  14 #include <asm/io.h>
  15 #include <asm/arch/sys_proto.h>
  16 #include <linux/libfdt.h>
  17
  18 u32 spl_boot_device(void)
  19 {
  20         u32 boot_mode;
  21
  22         boot_mode = get_bootmode();
  23
  24         switch (boot_mode) {
  25         case BOOT_FLASH_SD_1:
  26         case BOOT_FLASH_EMMC_1:
  27                 return BOOT_DEVICE_MMC1;
  28         case BOOT_FLASH_SD_2:
  29         case BOOT_FLASH_EMMC_2:
  30                 return BOOT_DEVICE_MMC2;
  31         case BOOT_SERIAL_UART_1:
  32         case BOOT_SERIAL_UART_2:
  33         case BOOT_SERIAL_UART_3:
  34         case BOOT_SERIAL_UART_4:
  35         case BOOT_SERIAL_UART_5:
  36         case BOOT_SERIAL_UART_6:
  37         case BOOT_SERIAL_UART_7:
  38         case BOOT_SERIAL_UART_8:
  39                 return BOOT_DEVICE_UART;
  40         case BOOT_SERIAL_USB_OTG:
  41                 return BOOT_DEVICE_USB;
  42         case BOOT_FLASH_NAND_FMC:
  43                 return BOOT_DEVICE_NAND;
  44         case BOOT_FLASH_NOR_QSPI:
  45                 return BOOT_DEVICE_SPI;
  46         case BOOT_FLASH_SPINAND_1:
  47                 return BOOT_DEVICE_NONE; /* SPINAND not supported in SPL */
  48         }
  49
  50         return BOOT_DEVICE_MMC1;
  51 }
  52
  53 u32 spl_mmc_boot_mode(const u32 boot_device)
  54 {
  55         return MMCSD_MODE_RAW;
  56 }
  57
  58 int spl_mmc_boot_partition(const u32 boot_device)
  59 {
  60         switch (boot_device) {
  61         case BOOT_DEVICE_MMC1:
  62                 return CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION;
  63         case BOOT_DEVICE_MMC2:
  64                 return CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_MMC2;
  65         default:
  66                 return -EINVAL;
  67         }
  68 }
  69
  70 #ifdef CONFIG_SPL_DISPLAY_PRINT
  71 void spl_display_print(void)
  72 {
  73         DECLARE_GLOBAL_DATA_PTR;
  74         const char *model;
  75
  76         /* same code than show_board_info() but not compiled for SPL
  77          * see CONFIG_DISPLAY_BOARDINFO & common/board_info.c
  78          */
  79         model = fdt_getprop(gd->fdt_blob, 0, "model", NULL);
  80         if (model)
  81                 printf("Model: %s\n", model);
  82 }
  83 #endif
  84
  85 __weak int board_early_init_f(void)
  86 {
  87         return 0;
  88 }
  89
  90 void board_init_f(ulong dummy)
  91 {
  92         struct udevice *dev;
  93         int ret;
  94
  95         arch_cpu_init();
  96
  97         ret = spl_early_init();
  98         if (ret) {
  99                 debug("spl_early_init() failed: %d\n", ret);
 100                 hang();
 101         }
 102
 103         ret = uclass_get_device(UCLASS_CLK, 0, &dev);
 104         if (ret) {
 105                 debug("Clock init failed: %d\n", ret);
 106                 hang();
 107         }
 108
 109         ret = uclass_get_device(UCLASS_RESET, 0, &dev);
 110         if (ret) {
 111                 debug("Reset init failed: %d\n", ret);
 112                 hang();
 113         }
 114
 115         ret = uclass_get_device(UCLASS_PINCTRL, 0, &dev);
 116         if (ret) {
 117                 debug("%s: Cannot find pinctrl device\n", __func__);
 118                 hang();
 119         }
 120
 121         /* enable console uart printing */
 122         preloader_console_init();
 123
 124         ret = board_early_init_f();
 125         if (ret) {
 126                 debug("board_early_init_f() failed: %d\n", ret);
 127                 hang();
 128         }
 129
 130         ret = uclass_get_device(UCLASS_RAM, 0, &dev);
 131         if (ret) {
 132                 printf("DRAM init failed: %d\n", ret);
 133                 hang();
 134         }
 135
 136         /*
 137          * activate cache on DDR only when DDR is fully initialized
 138          * to avoid speculative access and issue in get_ram_size()
 139          */
 140         if (!CONFIG_IS_ENABLED(SYS_DCACHE_OFF))
 141                 mmu_set_region_dcache_behaviour(STM32_DDR_BASE,
 142                                                 CONFIG_DDR_CACHEABLE_SIZE,
 143                                                 DCACHE_DEFAULT_OPTION);
 144 }
 145
 146 void spl_board_prepare_for_boot(void)
 147 {
 148         dcache_disable();
 149 }
 150
 151 void spl_board_prepare_for_linux(void)
 152 {
 153         dcache_disable();
 154 }