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 <spl.h>
  11 #include <asm/cache.h>
  12 #include <asm/io.h>
  13 #include <asm/arch/sys_proto.h>
  14 #include <linux/libfdt.h>
  15
  16 u32 spl_boot_device(void)
  17 {
  18         u32 boot_mode;
  19
  20         boot_mode = get_bootmode();
  21
  22         switch (boot_mode) {
  23         case BOOT_FLASH_SD_1:
  24         case BOOT_FLASH_EMMC_1:
  25                 return BOOT_DEVICE_MMC1;
  26         case BOOT_FLASH_SD_2:
  27         case BOOT_FLASH_EMMC_2:
  28                 return BOOT_DEVICE_MMC2;
  29         case BOOT_SERIAL_UART_1:
  30         case BOOT_SERIAL_UART_2:
  31         case BOOT_SERIAL_UART_3:
  32         case BOOT_SERIAL_UART_4:
  33         case BOOT_SERIAL_UART_5:
  34         case BOOT_SERIAL_UART_6:
  35         case BOOT_SERIAL_UART_7:
  36         case BOOT_SERIAL_UART_8:
  37                 return BOOT_DEVICE_UART;
  38         case BOOT_SERIAL_USB_OTG:
  39                 return BOOT_DEVICE_USB;
  40         case BOOT_FLASH_NAND_FMC:
  41                 return BOOT_DEVICE_NAND;
  42         case BOOT_FLASH_NOR_QSPI:
  43                 return BOOT_DEVICE_SPI;
  44         case BOOT_FLASH_SPINAND_1:
  45                 return BOOT_DEVICE_NONE; /* SPINAND not supported in SPL */
  46         }
  47
  48         return BOOT_DEVICE_MMC1;
  49 }
  50
  51 u32 spl_mmc_boot_mode(const u32 boot_device)
  52 {
  53         return MMCSD_MODE_RAW;
  54 }
  55
  56 int spl_mmc_boot_partition(const u32 boot_device)
  57 {
  58         switch (boot_device) {
  59         case BOOT_DEVICE_MMC1:
  60                 return CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION;
  61         case BOOT_DEVICE_MMC2:
  62                 return CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_MMC2;
  63         default:
  64                 return -EINVAL;
  65         }
  66 }
  67
  68 #ifdef CONFIG_SPL_DISPLAY_PRINT
  69 void spl_display_print(void)
  70 {
  71         DECLARE_GLOBAL_DATA_PTR;
  72         const char *model;
  73
  74         /* same code than show_board_info() but not compiled for SPL
  75          * see CONFIG_DISPLAY_BOARDINFO & common/board_info.c
  76          */
  77         model = fdt_getprop(gd->fdt_blob, 0, "model", NULL);
  78         if (model)
  79                 printf("Model: %s\n", model);
  80 }
  81 #endif
  82
  83 __weak int board_early_init_f(void)
  84 {
  85         return 0;
  86 }
  87
  88 void board_init_f(ulong dummy)
  89 {
  90         struct udevice *dev;
  91         int ret;
  92
  93         arch_cpu_init();
  94
  95         ret = spl_early_init();
  96         if (ret) {
  97                 debug("spl_early_init() failed: %d\n", ret);
  98                 hang();
  99         }
 100
 101         ret = uclass_get_device(UCLASS_CLK, 0, &dev);
 102         if (ret) {
 103                 debug("Clock init failed: %d\n", ret);
 104                 hang();
 105         }
 106
 107         ret = uclass_get_device(UCLASS_RESET, 0, &dev);
 108         if (ret) {
 109                 debug("Reset init failed: %d\n", ret);
 110                 hang();
 111         }
 112
 113         ret = uclass_get_device(UCLASS_PINCTRL, 0, &dev);
 114         if (ret) {
 115                 debug("%s: Cannot find pinctrl device\n", __func__);
 116                 hang();
 117         }
 118
 119         /* enable console uart printing */
 120         preloader_console_init();
 121
 122         ret = board_early_init_f();
 123         if (ret) {
 124                 debug("board_early_init_f() failed: %d\n", ret);
 125                 hang();
 126         }
 127
 128         ret = uclass_get_device(UCLASS_RAM, 0, &dev);
 129         if (ret) {
 130                 printf("DRAM init failed: %d\n", ret);
 131                 hang();
 132         }
 133
 134         /*
 135          * activate cache on DDR only when DDR is fully initialized
 136          * to avoid speculative access and issue in get_ram_size()
 137          */
 138         if (!CONFIG_IS_ENABLED(SYS_DCACHE_OFF))
 139                 mmu_set_region_dcache_behaviour(STM32_DDR_BASE, STM32_DDR_SIZE,
 140                                                 DCACHE_DEFAULT_OPTION);
 141 }
 142
 143 void spl_board_prepare_for_boot(void)
 144 {
 145         dcache_disable();
 146 }
 147
 148 void spl_board_prepare_for_boot_linux(void)
 149 {
 150         dcache_disable();
 151 }