arch/arm/cpu/armv8/fsl-layerscape/spl.c

   1 /*
   2  * Copyright 2014-2015 Freescale Semiconductor, Inc.
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <spl.h>
   9 #include <asm/io.h>
  10 #include <fsl_ifc.h>
  11 #include <i2c.h>
  12 #include <fsl_csu.h>
  13 #include <asm/arch/fdt.h>
  14 #include <asm/arch/ppa.h>
  15
  16 DECLARE_GLOBAL_DATA_PTR;
  17
  18 u32 spl_boot_device(void)
  19 {
  20 #ifdef CONFIG_SPL_MMC_SUPPORT
  21         return BOOT_DEVICE_MMC1;
  22 #endif
  23 #ifdef CONFIG_SPL_NAND_SUPPORT
  24         return BOOT_DEVICE_NAND;
  25 #endif
  26         return 0;
  27 }
  28
  29 u32 spl_boot_mode(const u32 boot_device)
  30 {
  31         switch (spl_boot_device()) {
  32         case BOOT_DEVICE_MMC1:
  33 #ifdef CONFIG_SPL_FAT_SUPPORT
  34                 return MMCSD_MODE_FS;
  35 #else
  36                 return MMCSD_MODE_RAW;
  37 #endif
  38         case BOOT_DEVICE_NAND:
  39                 return 0;
  40         default:
  41                 puts("spl: error: unsupported device\n");
  42                 hang();
  43         }
  44 }
  45
  46 #ifdef CONFIG_SPL_BUILD
  47
  48 void spl_board_init(void)
  49 {
  50 #if defined(CONFIG_SECURE_BOOT) && defined(CONFIG_FSL_LSCH2)
  51         /*
  52          * In case of Secure Boot, the IBR configures the SMMU
  53          * to allow only Secure transactions.
  54          * SMMU must be reset in bypass mode.
  55          * Set the ClientPD bit and Clear the USFCFG Bit
  56         */
  57         u32 val;
  58         val = (in_le32(SMMU_SCR0) | SCR0_CLIENTPD_MASK) & ~(SCR0_USFCFG_MASK);
  59         out_le32(SMMU_SCR0, val);
  60         val = (in_le32(SMMU_NSCR0) | SCR0_CLIENTPD_MASK) & ~(SCR0_USFCFG_MASK);
  61         out_le32(SMMU_NSCR0, val);
  62 #endif
  63 #ifdef CONFIG_LAYERSCAPE_NS_ACCESS
  64         enable_layerscape_ns_access();
  65 #endif
  66 #ifdef CONFIG_SPL_FSL_LS_PPA
  67         ppa_init();
  68 #endif
  69 }
  70
  71 void board_init_f(ulong dummy)
  72 {
  73         /* Clear global data */
  74         memset((void *)gd, 0, sizeof(gd_t));
  75         board_early_init_f();
  76         timer_init();
  77 #ifdef CONFIG_ARCH_LS2080A
  78         env_init();
  79 #endif
  80         get_clocks();
  81
  82         preloader_console_init();
  83         spl_set_bd();
  84
  85 #ifdef CONFIG_SPL_I2C_SUPPORT
  86         i2c_init_all();
  87 #endif
  88         dram_init();
  89 #ifdef CONFIG_SPL_FSL_LS_PPA
  90 #ifndef CONFIG_SYS_MEM_RESERVE_SECURE
  91 #error Need secure RAM for PPA
  92 #endif
  93         /*
  94          * Secure memory location is determined in dram_init_banksize().
  95          * gd->ram_size is deducted by the size of secure ram.
  96          */
  97         dram_init_banksize();
  98
  99         /*
 100          * After dram_init_bank_size(), we know U-Boot only uses the first
 101          * memory bank regardless how big the memory is.
 102          */
 103         gd->ram_top = gd->bd->bi_dram[0].start + gd->bd->bi_dram[0].size;
 104
 105         /*
 106          * If PPA is loaded, U-Boot will resume running at EL2.
 107          * Cache and MMU will be enabled. Need a place for TLB.
 108          * U-Boot will be relocated to the end of available memory
 109          * in first bank. At this point, we cannot know how much
 110          * memory U-Boot uses. Put TLB table lower by SPL_TLB_SETBACK
 111          * to avoid overlapping. As soon as the RAM version U-Boot sets
 112          * up new MMU, this space is no longer needed.
 113          */
 114         gd->ram_top -= SPL_TLB_SETBACK;
 115         gd->arch.tlb_size = PGTABLE_SIZE;
 116         gd->arch.tlb_addr = (gd->ram_top - gd->arch.tlb_size) & ~(0x10000 - 1);
 117         gd->arch.tlb_allocated = gd->arch.tlb_addr;
 118 #endif  /* CONFIG_SPL_FSL_LS_PPA */
 119 }
 120
 121 #ifdef CONFIG_SPL_OS_BOOT
 122 /*
 123  * Return
 124  * 0 if booting into OS is selected
 125  * 1 if booting into U-Boot is selected
 126  */
 127 int spl_start_uboot(void)
 128 {
 129         env_init();
 130         if (env_get_yesno("boot_os") != 0)
 131                 return 0;
 132
 133         return 1;
 134 }
 135 #endif  /* CONFIG_SPL_OS_BOOT */
 136 #ifdef CONFIG_SPL_LOAD_FIT
 137 int board_fit_config_name_match(const char *name)
 138 {
 139         /* Just empty function now - can't decide what to choose */
 140         debug("%s: %s\n", __func__, name);
 141
 142         return 0;
 143 }
 144 #endif
 145 #endif /* CONFIG_SPL_BUILD */