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 <asm/mach-imx/boot_mode.h>
  18 #include <g_dnl.h>
  19
  20 DECLARE_GLOBAL_DATA_PTR;
  21
  22 #if defined(CONFIG_MX6)
  23 /* determine boot device from SRC_SBMR1 (BOOT_CFG[4:1]) or SRC_GPR9 register */
  24 u32 spl_boot_device(void)
  25 {
  26         unsigned int bmode = readl(&src_base->sbmr2);
  27         u32 reg = imx6_src_get_boot_mode();
  28
  29         /*
  30          * Check for BMODE if serial downloader is enabled
  31          * BOOT_MODE - see IMX6DQRM Table 8-1
  32          */
  33         if (((bmode >> 24) & 0x03) == 0x01) /* Serial Downloader */
  34                 return BOOT_DEVICE_BOARD;
  35
  36         /*
  37          * The above method does not detect that the boot ROM used
  38          * serial downloader in case the boot ROM decided to use the
  39          * serial downloader as a fall back (primary boot source failed).
  40          *
  41          * Infer that the boot ROM used the USB serial downloader by
  42          * checking whether the USB PHY is currently active... This
  43          * assumes that SPL did not (yet) initialize the USB PHY...
  44          */
  45         if (is_usbotg_phy_active())
  46                 return BOOT_DEVICE_BOARD;
  47
  48         /* BOOT_CFG1[7:4] - see IMX6DQRM Table 8-8 */
  49         switch ((reg & IMX6_BMODE_MASK) >> IMX6_BMODE_SHIFT) {
  50          /* EIM: See 8.5.1, Table 8-9 */
  51         case IMX6_BMODE_EMI:
  52                 /* BOOT_CFG1[3]: NOR/OneNAND Selection */
  53                 switch ((reg & IMX6_BMODE_EMI_MASK) >> IMX6_BMODE_EMI_SHIFT) {
  54                 case IMX6_BMODE_ONENAND:
  55                         return BOOT_DEVICE_ONENAND;
  56                 case IMX6_BMODE_NOR:
  57                         return BOOT_DEVICE_NOR;
  58                 break;
  59                 }
  60         /* Reserved: Used to force Serial Downloader */
  61         case IMX6_BMODE_RESERVED:
  62                 return BOOT_DEVICE_BOARD;
  63         /* SATA: See 8.5.4, Table 8-20 */
  64 #if !defined(CONFIG_MX6UL) && !defined(CONFIG_MX6ULL)
  65         case IMX6_BMODE_SATA:
  66                 return BOOT_DEVICE_SATA;
  67 #endif
  68         /* Serial ROM: See 8.5.5.1, Table 8-22 */
  69         case IMX6_BMODE_SERIAL_ROM:
  70                 /* BOOT_CFG4[2:0] */
  71                 switch ((reg & IMX6_BMODE_SERIAL_ROM_MASK) >>
  72                         IMX6_BMODE_SERIAL_ROM_SHIFT) {
  73                 case IMX6_BMODE_ECSPI1:
  74                 case IMX6_BMODE_ECSPI2:
  75                 case IMX6_BMODE_ECSPI3:
  76                 case IMX6_BMODE_ECSPI4:
  77                 case IMX6_BMODE_ECSPI5:
  78                         return BOOT_DEVICE_SPI;
  79                 case IMX6_BMODE_I2C1:
  80                 case IMX6_BMODE_I2C2:
  81                 case IMX6_BMODE_I2C3:
  82                         return BOOT_DEVICE_I2C;
  83                 }
  84                 break;
  85         /* SD/eSD: 8.5.3, Table 8-15  */
  86         case IMX6_BMODE_SD:
  87         case IMX6_BMODE_ESD:
  88                 return BOOT_DEVICE_MMC1;
  89         /* MMC/eMMC: 8.5.3 */
  90         case IMX6_BMODE_MMC:
  91         case IMX6_BMODE_EMMC:
  92                 return BOOT_DEVICE_MMC1;
  93         /* NAND Flash: 8.5.2, Table 8-10 */
  94         case IMX6_BMODE_NAND:
  95                 return BOOT_DEVICE_NAND;
  96         }
  97         return BOOT_DEVICE_NONE;
  98 }
  99
 100 #elif defined(CONFIG_MX7)
 101 /* Translate iMX7 boot device to the SPL boot device enumeration */
 102 u32 spl_boot_device(void)
 103 {
 104         enum boot_device boot_device_spl = get_boot_device();
 105
 106         switch (boot_device_spl) {
 107         case SD1_BOOT:
 108         case MMC1_BOOT:
 109                 return BOOT_DEVICE_MMC1;
 110         case SD2_BOOT:
 111         case MMC2_BOOT:
 112                 return BOOT_DEVICE_MMC2;
 113         case SPI_NOR_BOOT:
 114                 return BOOT_DEVICE_SPI;
 115         default:
 116                 return BOOT_DEVICE_NONE;
 117         }
 118 }
 119 #endif /* CONFIG_MX6 || CONFIG_MX7 */
 120
 121 #ifdef CONFIG_SPL_USB_GADGET_SUPPORT
 122 int g_dnl_bind_fixup(struct usb_device_descriptor *dev, const char *name)
 123 {
 124         put_unaligned(CONFIG_USB_GADGET_PRODUCT_NUM + 0xfff, &dev->idProduct);
 125
 126         return 0;
 127 }
 128 #endif
 129
 130 #if defined(CONFIG_SPL_MMC_SUPPORT)
 131 /* called from spl_mmc to see type of boot mode for storage (RAW or FAT) */
 132 u32 spl_boot_mode(const u32 boot_device)
 133 {
 134         switch (spl_boot_device()) {
 135         /* for MMC return either RAW or FAT mode */
 136         case BOOT_DEVICE_MMC1:
 137         case BOOT_DEVICE_MMC2:
 138 #if defined(CONFIG_SPL_FAT_SUPPORT)
 139                 return MMCSD_MODE_FS;
 140 #elif defined(CONFIG_SUPPORT_EMMC_BOOT)
 141                 return MMCSD_MODE_EMMCBOOT;
 142 #else
 143                 return MMCSD_MODE_RAW;
 144 #endif
 145                 break;
 146         default:
 147                 puts("spl: ERROR:  unsupported device\n");
 148                 hang();
 149         }
 150 }
 151 #endif
 152
 153 #if defined(CONFIG_SECURE_BOOT)
 154
 155 __weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
 156 {
 157         typedef void __noreturn (*image_entry_noargs_t)(void);
 158
 159         image_entry_noargs_t image_entry =
 160                 (image_entry_noargs_t)(unsigned long)spl_image->entry_point;
 161
 162         debug("image entry point: 0x%lX\n", spl_image->entry_point);
 163
 164         /* HAB looks for the CSF at the end of the authenticated data therefore,
 165          * we need to subtract the size of the CSF from the actual filesize */
 166         if (authenticate_image(spl_image->load_addr,
 167                                spl_image->size - CONFIG_CSF_SIZE)) {
 168                 image_entry();
 169         } else {
 170                 puts("spl: ERROR:  image authentication unsuccessful\n");
 171                 hang();
 172         }
 173 }
 174
 175 #endif
 176
 177 #if defined(CONFIG_MX6) && defined(CONFIG_SPL_OS_BOOT)
 178 int dram_init_banksize(void)
 179 {
 180         gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
 181         gd->bd->bi_dram[0].size = imx_ddr_size();
 182
 183         return 0;
 184 }
 185 #endif