arch/arm/mach-imx/spl.c

   1 /*
   2  * Copyright (C) 2014 Gateworks Corporation
   3  * Copyright (C) 2011-2012 Freescale Semiconductor, Inc.
   4  *
   5  * Author: Tim Harvey <tharvey@gateworks.com>
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 #include <common.h>
  11 #include <asm/io.h>
  12 #include <asm/arch/imx-regs.h>
  13 #include <asm/arch/sys_proto.h>
  14 #include <asm/spl.h>
  15 #include <spl.h>
  16 #include <asm/mach-imx/hab.h>
  17
  18 DECLARE_GLOBAL_DATA_PTR;
  19
  20 #if defined(CONFIG_MX6)
  21 /* determine boot device from SRC_SBMR1 (BOOT_CFG[4:1]) or SRC_GPR9 register */
  22 u32 spl_boot_device(void)
  23 {
  24         unsigned int bmode = readl(&src_base->sbmr2);
  25         u32 reg = imx6_src_get_boot_mode();
  26
  27         /*
  28          * Check for BMODE if serial downloader is enabled
  29          * BOOT_MODE - see IMX6DQRM Table 8-1
  30          */
  31         if (((bmode >> 24) & 0x03) == 0x01) /* Serial Downloader */
  32                 return BOOT_DEVICE_BOARD;
  33
  34         /* BOOT_CFG1[7:4] - see IMX6DQRM Table 8-8 */
  35         switch ((reg & IMX6_BMODE_MASK) >> IMX6_BMODE_SHIFT) {
  36          /* EIM: See 8.5.1, Table 8-9 */
  37         case IMX6_BMODE_EMI:
  38                 /* BOOT_CFG1[3]: NOR/OneNAND Selection */
  39                 switch ((reg & IMX6_BMODE_EMI_MASK) >> IMX6_BMODE_EMI_SHIFT) {
  40                 case IMX6_BMODE_ONENAND:
  41                         return BOOT_DEVICE_ONENAND;
  42                 case IMX6_BMODE_NOR:
  43                         return BOOT_DEVICE_NOR;
  44                 break;
  45                 }
  46         /* Reserved: Used to force Serial Downloader */
  47         case IMX6_BMODE_RESERVED:
  48                 return BOOT_DEVICE_BOARD;
  49         /* SATA: See 8.5.4, Table 8-20 */
  50 #if !defined(CONFIG_MX6UL) && !defined(CONFIG_MX6ULL)
  51         case IMX6_BMODE_SATA:
  52                 return BOOT_DEVICE_SATA;
  53 #endif
  54         /* Serial ROM: See 8.5.5.1, Table 8-22 */
  55         case IMX6_BMODE_SERIAL_ROM:
  56                 /* BOOT_CFG4[2:0] */
  57                 switch ((reg & IMX6_BMODE_SERIAL_ROM_MASK) >>
  58                         IMX6_BMODE_SERIAL_ROM_SHIFT) {
  59                 case IMX6_BMODE_ECSPI1:
  60                 case IMX6_BMODE_ECSPI2:
  61                 case IMX6_BMODE_ECSPI3:
  62                 case IMX6_BMODE_ECSPI4:
  63                 case IMX6_BMODE_ECSPI5:
  64                         return BOOT_DEVICE_SPI;
  65                 case IMX6_BMODE_I2C1:
  66                 case IMX6_BMODE_I2C2:
  67                 case IMX6_BMODE_I2C3:
  68                         return BOOT_DEVICE_I2C;
  69                 }
  70                 break;
  71         /* SD/eSD: 8.5.3, Table 8-15  */
  72         case IMX6_BMODE_SD:
  73         case IMX6_BMODE_ESD:
  74                 return BOOT_DEVICE_MMC1;
  75         /* MMC/eMMC: 8.5.3 */
  76         case IMX6_BMODE_MMC:
  77         case IMX6_BMODE_EMMC:
  78                 return BOOT_DEVICE_MMC1;
  79         /* NAND Flash: 8.5.2, Table 8-10 */
  80         case IMX6_BMODE_NAND:
  81                 return BOOT_DEVICE_NAND;
  82         }
  83         return BOOT_DEVICE_NONE;
  84 }
  85 #endif
  86
  87 #if defined(CONFIG_SPL_MMC_SUPPORT)
  88 /* called from spl_mmc to see type of boot mode for storage (RAW or FAT) */
  89 u32 spl_boot_mode(const u32 boot_device)
  90 {
  91         switch (spl_boot_device()) {
  92         /* for MMC return either RAW or FAT mode */
  93         case BOOT_DEVICE_MMC1:
  94         case BOOT_DEVICE_MMC2:
  95 #if defined(CONFIG_SPL_FAT_SUPPORT)
  96                 return MMCSD_MODE_FS;
  97 #elif defined(CONFIG_SUPPORT_EMMC_BOOT)
  98                 return MMCSD_MODE_EMMCBOOT;
  99 #else
 100                 return MMCSD_MODE_RAW;
 101 #endif
 102                 break;
 103         default:
 104                 puts("spl: ERROR:  unsupported device\n");
 105                 hang();
 106         }
 107 }
 108 #endif
 109
 110 #if defined(CONFIG_SECURE_BOOT)
 111
 112 __weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
 113 {
 114         typedef void __noreturn (*image_entry_noargs_t)(void);
 115
 116         image_entry_noargs_t image_entry =
 117                 (image_entry_noargs_t)(unsigned long)spl_image->entry_point;
 118
 119         debug("image entry point: 0x%lX\n", spl_image->entry_point);
 120
 121         /* HAB looks for the CSF at the end of the authenticated data therefore,
 122          * we need to subtract the size of the CSF from the actual filesize */
 123         if (authenticate_image(spl_image->load_addr,
 124                                spl_image->size - CONFIG_CSF_SIZE)) {
 125                 image_entry();
 126         } else {
 127                 puts("spl: ERROR:  image authentication unsuccessful\n");
 128                 hang();
 129         }
 130 }
 131
 132 #endif
 133
 134 #if defined(CONFIG_MX6) && defined(CONFIG_SPL_OS_BOOT)
 135 int dram_init_banksize(void)
 136 {
 137         gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
 138         gd->bd->bi_dram[0].size = imx_ddr_size();
 139
 140         return 0;
 141 }
 142 #endif