LXR uboot/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
  16DECLARE_GLOBAL_DATA_PTR;
  17
  18u32 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
  29u32 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
  48void 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
  71void 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 */
 127int 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
 137int 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 */
 146