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 #include <g_dnl.h>
  18
  19 DECLARE_GLOBAL_DATA_PTR;
  20
  21 #if defined(CONFIG_MX6)
  22 /* determine boot device from SRC_SBMR1 (BOOT_CFG[4:1]) or SRC_GPR9 register */
  23 u32 spl_boot_device(void)
  24 {
  25         unsigned int bmode = readl(&src_base->sbmr2);
  26         u32 reg = imx6_src_get_boot_mode();
  27
  28         /*
  29          * Check for BMODE if serial downloader is enabled
  30          * BOOT_MODE - see IMX6DQRM Table 8-1
  31          */
  32         if (((bmode >> 24) & 0x03) == 0x01) /* Serial Downloader */
  33                 return BOOT_DEVICE_BOARD;
  34
  35         /*
  36          * The above method does not detect that the boot ROM used
  37          * serial downloader in case the boot ROM decided to use the
  38          * serial downloader as a fall back (primary boot source failed).
  39          *
  40          * Infer that the boot ROM used the USB serial downloader by
  41          * checking whether the USB PHY is currently active... This
  42          * assumes that SPL did not (yet) initialize the USB PHY...
  43          */
  44         if (is_usbotg_phy_active())
  45                 return BOOT_DEVICE_BOARD;
  46
  47         /* BOOT_CFG1[7:4] - see IMX6DQRM Table 8-8 */
  48         switch ((reg & IMX6_BMODE_MASK) >> IMX6_BMODE_SHIFT) {
  49          /* EIM: See 8.5.1, Table 8-9 */
  50         case IMX6_BMODE_EMI:
  51                 /* BOOT_CFG1[3]: NOR/OneNAND Selection */
  52                 switch ((reg & IMX6_BMODE_EMI_MASK) >> IMX6_BMODE_EMI_SHIFT) {
  53                 case IMX6_BMODE_ONENAND:
  54                         return BOOT_DEVICE_ONENAND;
  55                 case IMX6_BMODE_NOR:
  56                         return BOOT_DEVICE_NOR;
  57                 break;
  58                 }
  59         /* Reserved: Used to force Serial Downloader */
  60         case IMX6_BMODE_RESERVED:
  61                 return BOOT_DEVICE_BOARD;
  62         /* SATA: See 8.5.4, Table 8-20 */
  63 #if !defined(CONFIG_MX6UL) && !defined(CONFIG_MX6ULL)
  64         case IMX6_BMODE_SATA:
  65                 return BOOT_DEVICE_SATA;
  66 #endif
  67         /* Serial ROM: See 8.5.5.1, Table 8-22 */
  68         case IMX6_BMODE_SERIAL_ROM:
  69                 /* BOOT_CFG4[2:0] */
  70                 switch ((reg & IMX6_BMODE_SERIAL_ROM_MASK) >>
  71                         IMX6_BMODE_SERIAL_ROM_SHIFT) {
  72                 case IMX6_BMODE_ECSPI1:
  73                 case IMX6_BMODE_ECSPI2:
  74                 case IMX6_BMODE_ECSPI3:
  75                 case IMX6_BMODE_ECSPI4:
  76                 case IMX6_BMODE_ECSPI5:
  77                         return BOOT_DEVICE_SPI;
  78                 case IMX6_BMODE_I2C1:
  79                 case IMX6_BMODE_I2C2:
  80                 case IMX6_BMODE_I2C3:
  81                         return BOOT_DEVICE_I2C;
  82                 }
  83                 break;
  84         /* SD/eSD: 8.5.3, Table 8-15  */
  85         case IMX6_BMODE_SD:
  86         case IMX6_BMODE_ESD:
  87                 return BOOT_DEVICE_MMC1;
  88         /* MMC/eMMC: 8.5.3 */
  89         case IMX6_BMODE_MMC:
  90         case IMX6_BMODE_EMMC:
  91                 return BOOT_DEVICE_MMC1;
  92         /* NAND Flash: 8.5.2, Table 8-10 */
  93         case IMX6_BMODE_NAND:
  94                 return BOOT_DEVICE_NAND;
  95         }
  96         return BOOT_DEVICE_NONE;
  97 }
  98
  99 #ifdef CONFIG_SPL_USB_GADGET_SUPPORT
 100 int g_dnl_bind_fixup(struct usb_device_descriptor *dev, const char *name)
 101 {
 102         put_unaligned(CONFIG_USB_GADGET_PRODUCT_NUM + 0xfff, &dev->idProduct);
 103
 104         return 0;
 105 }
 106 #endif
 107 #endif
 108
 109 #if defined(CONFIG_SPL_MMC_SUPPORT)
 110 /* called from spl_mmc to see type of boot mode for storage (RAW or FAT) */
 111 u32 spl_boot_mode(const u32 boot_device)
 112 {
 113         switch (spl_boot_device()) {
 114         /* for MMC return either RAW or FAT mode */
 115         case BOOT_DEVICE_MMC1:
 116         case BOOT_DEVICE_MMC2:
 117 #if defined(CONFIG_SPL_FAT_SUPPORT)
 118                 return MMCSD_MODE_FS;
 119 #elif defined(CONFIG_SUPPORT_EMMC_BOOT)
 120                 return MMCSD_MODE_EMMCBOOT;
 121 #else
 122                 return MMCSD_MODE_RAW;
 123 #endif
 124                 break;
 125         default:
 126                 puts("spl: ERROR:  unsupported device\n");
 127                 hang();
 128         }
 129 }
 130 #endif
 131
 132 #if defined(CONFIG_SECURE_BOOT)
 133
 134 __weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
 135 {
 136         typedef void __noreturn (*image_entry_noargs_t)(void);
 137
 138         image_entry_noargs_t image_entry =
 139                 (image_entry_noargs_t)(unsigned long)spl_image->entry_point;
 140
 141         debug("image entry point: 0x%lX\n", spl_image->entry_point);
 142
 143         /* HAB looks for the CSF at the end of the authenticated data therefore,
 144          * we need to subtract the size of the CSF from the actual filesize */
 145         if (authenticate_image(spl_image->load_addr,
 146                                spl_image->size - CONFIG_CSF_SIZE)) {
 147                 image_entry();
 148         } else {
 149                 puts("spl: ERROR:  image authentication unsuccessful\n");
 150                 hang();
 151         }
 152 }
 153
 154 #endif
 155
 156 #if defined(CONFIG_MX6) && defined(CONFIG_SPL_OS_BOOT)
 157 int dram_init_banksize(void)
 158 {
 159         gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
 160         gd->bd->bi_dram[0].size = imx_ddr_size();
 161
 162         return 0;
 163 }
 164 #endif