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 #ifdef CONFIG_SPL_BUILD
  30
  31 void spl_board_init(void)
  32 {
  33 #if defined(CONFIG_SECURE_BOOT) && defined(CONFIG_FSL_LSCH2)
  34         /*
  35          * In case of Secure Boot, the IBR configures the SMMU
  36          * to allow only Secure transactions.
  37          * SMMU must be reset in bypass mode.
  38          * Set the ClientPD bit and Clear the USFCFG Bit
  39         */
  40         u32 val;
  41         val = (in_le32(SMMU_SCR0) | SCR0_CLIENTPD_MASK) & ~(SCR0_USFCFG_MASK);
  42         out_le32(SMMU_SCR0, val);
  43         val = (in_le32(SMMU_NSCR0) | SCR0_CLIENTPD_MASK) & ~(SCR0_USFCFG_MASK);
  44         out_le32(SMMU_NSCR0, val);
  45 #endif
  46 #ifdef CONFIG_LAYERSCAPE_NS_ACCESS
  47         enable_layerscape_ns_access();
  48 #endif
  49 #ifdef CONFIG_SPL_FSL_LS_PPA
  50         ppa_init();
  51 #endif
  52 }
  53
  54 void board_init_f(ulong dummy)
  55 {
  56         /* Clear global data */
  57         memset((void *)gd, 0, sizeof(gd_t));
  58         board_early_init_f();
  59         timer_init();
  60 #ifdef CONFIG_ARCH_LS2080A
  61         env_init();
  62 #endif
  63         get_clocks();
  64
  65         preloader_console_init();
  66         spl_set_bd();
  67
  68 #ifdef CONFIG_SPL_I2C_SUPPORT
  69         i2c_init_all();
  70 #endif
  71 #ifdef CONFIG_VID
  72         init_func_vid();
  73 #endif
  74         dram_init();
  75 #ifdef CONFIG_SPL_FSL_LS_PPA
  76 #ifndef CONFIG_SYS_MEM_RESERVE_SECURE
  77 #error Need secure RAM for PPA
  78 #endif
  79         /*
  80          * Secure memory location is determined in dram_init_banksize().
  81          * gd->ram_size is deducted by the size of secure ram.
  82          */
  83         dram_init_banksize();
  84
  85         /*
  86          * After dram_init_bank_size(), we know U-Boot only uses the first
  87          * memory bank regardless how big the memory is.
  88          */
  89         gd->ram_top = gd->bd->bi_dram[0].start + gd->bd->bi_dram[0].size;
  90
  91         /*
  92          * If PPA is loaded, U-Boot will resume running at EL2.
  93          * Cache and MMU will be enabled. Need a place for TLB.
  94          * U-Boot will be relocated to the end of available memory
  95          * in first bank. At this point, we cannot know how much
  96          * memory U-Boot uses. Put TLB table lower by SPL_TLB_SETBACK
  97          * to avoid overlapping. As soon as the RAM version U-Boot sets
  98          * up new MMU, this space is no longer needed.
  99          */
 100         gd->ram_top -= SPL_TLB_SETBACK;
 101         gd->arch.tlb_size = PGTABLE_SIZE;
 102         gd->arch.tlb_addr = (gd->ram_top - gd->arch.tlb_size) & ~(0x10000 - 1);
 103         gd->arch.tlb_allocated = gd->arch.tlb_addr;
 104 #endif  /* CONFIG_SPL_FSL_LS_PPA */
 105 }
 106
 107 #ifdef CONFIG_SPL_OS_BOOT
 108 /*
 109  * Return
 110  * 0 if booting into OS is selected
 111  * 1 if booting into U-Boot is selected
 112  */
 113 int spl_start_uboot(void)
 114 {
 115         env_init();
 116         if (env_get_yesno("boot_os") != 0)
 117                 return 0;
 118
 119         return 1;
 120 }
 121 #endif  /* CONFIG_SPL_OS_BOOT */
 122 #ifdef CONFIG_SPL_LOAD_FIT
 123 int board_fit_config_name_match(const char *name)
 124 {
 125         /* Just empty function now - can't decide what to choose */
 126         debug("%s: %s\n", __func__, name);
 127
 128         return 0;
 129 }
 130 #endif
 131 #endif /* CONFIG_SPL_BUILD */