arch/arm/mach-k3/am6_init.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * K3: Architecture initialization
   4  *
   5  * Copyright (C) 2017-2018 Texas Instruments Incorporated - http://www.ti.com/
   6  *      Lokesh Vutla <lokeshvutla@ti.com>
   7  */
   8
   9 #include <common.h>
  10 #include <asm/io.h>
  11 #include <spl.h>
  12 #include <asm/arch/hardware.h>
  13
  14 #ifdef CONFIG_SPL_BUILD
  15 static void store_boot_index_from_rom(void)
  16 {
  17         u32 *boot_index = (u32 *)K3_BOOT_PARAM_TABLE_INDEX_VAL;
  18
  19         *boot_index = *(u32 *)(CONFIG_SYS_K3_BOOT_PARAM_TABLE_INDEX);
  20 }
  21
  22 void board_init_f(ulong dummy)
  23 {
  24         /*
  25          * Cannot delay this further as there is a chance that
  26          * K3_BOOT_PARAM_TABLE_INDEX can be over written by SPL MALLOC section.
  27          */
  28         store_boot_index_from_rom();
  29
  30         /* Init DM early in-order to invoke system controller */
  31         spl_early_init();
  32
  33         /* Prepare console output */
  34         preloader_console_init();
  35 }
  36
  37 static u32 __get_backup_bootmedia(u32 devstat)
  38 {
  39         u32 bkup_boot = (devstat & CTRLMMR_MAIN_DEVSTAT_BKUP_BOOTMODE_MASK) >>
  40                         CTRLMMR_MAIN_DEVSTAT_BKUP_BOOTMODE_SHIFT;
  41
  42         switch (bkup_boot) {
  43         case BACKUP_BOOT_DEVICE_USB:
  44                 return BOOT_DEVICE_USB;
  45         case BACKUP_BOOT_DEVICE_UART:
  46                 return BOOT_DEVICE_UART;
  47         case BACKUP_BOOT_DEVICE_ETHERNET:
  48                 return BOOT_DEVICE_ETHERNET;
  49         case BACKUP_BOOT_DEVICE_MMC2:
  50                 return BOOT_DEVICE_MMC2;
  51         case BACKUP_BOOT_DEVICE_SPI:
  52                 return BOOT_DEVICE_SPI;
  53         case BACKUP_BOOT_DEVICE_HYPERFLASH:
  54                 return BOOT_DEVICE_HYPERFLASH;
  55         case BACKUP_BOOT_DEVICE_I2C:
  56                 return BOOT_DEVICE_I2C;
  57         };
  58
  59         return BOOT_DEVICE_RAM;
  60 }
  61
  62 static u32 __get_primary_bootmedia(u32 devstat)
  63 {
  64         u32 bootmode = devstat & CTRLMMR_MAIN_DEVSTAT_BOOTMODE_MASK;
  65
  66         if (bootmode == BOOT_DEVICE_OSPI || bootmode == BOOT_DEVICE_QSPI)
  67                 bootmode = BOOT_DEVICE_SPI;
  68
  69         return bootmode;
  70 }
  71
  72 u32 spl_boot_device(void)
  73 {
  74         u32 devstat = readl(CTRLMMR_MAIN_DEVSTAT);
  75         u32 bootindex = readl(K3_BOOT_PARAM_TABLE_INDEX_VAL);
  76
  77         if (bootindex == K3_PRIMARY_BOOTMODE)
  78                 return __get_primary_bootmedia(devstat);
  79         else
  80                 return __get_backup_bootmedia(devstat);
  81 }
  82 #endif
  83
  84 #ifndef CONFIG_SYSRESET
  85 void reset_cpu(ulong ignored)
  86 {
  87 }
  88 #endif