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 #ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION
  59 int spl_mmc_boot_partition(const u32 boot_device)
  60 {
  61         switch (boot_device) {
  62         case BOOT_DEVICE_MMC1:
  63                 return CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION;
  64         case BOOT_DEVICE_MMC2:
  65                 return CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_MMC2;
  66         default:
  67                 return -EINVAL;
  68         }
  69 }
  70 #endif
  71
  72 #ifdef CONFIG_SPL_DISPLAY_PRINT
  73 void spl_display_print(void)
  74 {
  75         DECLARE_GLOBAL_DATA_PTR;
  76         const char *model;
  77
  78         /* same code than show_board_info() but not compiled for SPL
  79          * see CONFIG_DISPLAY_BOARDINFO & common/board_info.c
  80          */
  81         model = fdt_getprop(gd->fdt_blob, 0, "model", NULL);
  82         if (model)
  83                 printf("Model: %s\n", model);
  84 }
  85 #endif
  86
  87 __weak int board_early_init_f(void)
  88 {
  89         return 0;
  90 }
  91
  92 void board_init_f(ulong dummy)
  93 {
  94         struct udevice *dev;
  95         int ret;
  96
  97         arch_cpu_init();
  98
  99         ret = spl_early_init();
 100         if (ret) {
 101                 debug("spl_early_init() failed: %d\n", ret);
 102                 hang();
 103         }
 104
 105         ret = uclass_get_device(UCLASS_CLK, 0, &dev);
 106         if (ret) {
 107                 debug("Clock init failed: %d\n", ret);
 108                 hang();
 109         }
 110
 111         ret = uclass_get_device(UCLASS_RESET, 0, &dev);
 112         if (ret) {
 113                 debug("Reset init failed: %d\n", ret);
 114                 hang();
 115         }
 116
 117         ret = uclass_get_device(UCLASS_PINCTRL, 0, &dev);
 118         if (ret) {
 119                 debug("%s: Cannot find pinctrl device\n", __func__);
 120                 hang();
 121         }
 122
 123         /* enable console uart printing */
 124         preloader_console_init();
 125
 126         ret = board_early_init_f();
 127         if (ret) {
 128                 debug("board_early_init_f() failed: %d\n", ret);
 129                 hang();
 130         }
 131
 132         ret = uclass_get_device(UCLASS_RAM, 0, &dev);
 133         if (ret) {
 134                 printf("DRAM init failed: %d\n", ret);
 135                 hang();
 136         }
 137
 138         /*
 139          * activate cache on DDR only when DDR is fully initialized
 140          * to avoid speculative access and issue in get_ram_size()
 141          */
 142         if (!CONFIG_IS_ENABLED(SYS_DCACHE_OFF))
 143                 mmu_set_region_dcache_behaviour(STM32_DDR_BASE,
 144                                                 CONFIG_DDR_CACHEABLE_SIZE,
 145                                                 DCACHE_DEFAULT_OPTION);
 146 }
 147
 148 void spl_board_prepare_for_boot(void)
 149 {
 150         dcache_disable();
 151 }
 152
 153 void spl_board_prepare_for_linux(void)
 154 {
 155         dcache_disable();
 156 }