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_MIN ... IMX6_BMODE_NAND_MAX:
  95                 return BOOT_DEVICE_NAND;
  96         }
  97         return BOOT_DEVICE_NONE;
  98 }
  99
 100 #elif defined(CONFIG_MX7) || defined(CONFIG_MX8M)
 101 /* Translate iMX7/MX8M 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         case SD2_BOOT:
 110         case MMC2_BOOT:
 111         case SD3_BOOT:
 112         case MMC3_BOOT:
 113                 return BOOT_DEVICE_MMC1;
 114         case NAND_BOOT:
 115                 return BOOT_DEVICE_NAND;
 116         case SPI_NOR_BOOT:
 117                 return BOOT_DEVICE_SPI;
 118         case USB_BOOT:
 119                 return BOOT_DEVICE_USB;
 120         default:
 121                 return BOOT_DEVICE_NONE;
 122         }
 123 }
 124 #endif /* CONFIG_MX6 || CONFIG_MX7 || CONFIG_MX8M */
 125
 126 #ifdef CONFIG_SPL_USB_GADGET_SUPPORT
 127 int g_dnl_bind_fixup(struct usb_device_descriptor *dev, const char *name)
 128 {
 129         put_unaligned(CONFIG_USB_GADGET_PRODUCT_NUM + 0xfff, &dev->idProduct);
 130
 131         return 0;
 132 }
 133 #endif
 134
 135 #if defined(CONFIG_SECURE_BOOT)
 136
 137 /*
 138  * +------------+  0x0 (DDR_UIMAGE_START) -
 139  * |   Header   |                          |
 140  * +------------+  0x40                    |
 141  * |            |                          |
 142  * |            |                          |
 143  * |            |                          |
 144  * |            |                          |
 145  * | Image Data |                          |
 146  * .            |                          |
 147  * .            |                           > Stuff to be authenticated ----+
 148  * .            |                          |                                |
 149  * |            |                          |                                |
 150  * |            |                          |                                |
 151  * +------------+                          |                                |
 152  * |            |                          |                                |
 153  * | Fill Data  |                          |                                |
 154  * |            |                          |                                |
 155  * +------------+ Align to ALIGN_SIZE      |                                |
 156  * |    IVT     |                          |                                |
 157  * +------------+ + IVT_SIZE              -                                 |
 158  * |            |                                                           |
 159  * |  CSF DATA  | <---------------------------------------------------------+
 160  * |            |
 161  * +------------+
 162  * |            |
 163  * | Fill Data  |
 164  * |            |
 165  * +------------+ + CSF_PAD_SIZE
 166  */
 167
 168 __weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
 169 {
 170         typedef void __noreturn (*image_entry_noargs_t)(void);
 171         uint32_t offset;
 172
 173         image_entry_noargs_t image_entry =
 174                 (image_entry_noargs_t)(unsigned long)spl_image->entry_point;
 175
 176         debug("image entry point: 0x%lX\n", spl_image->entry_point);
 177
 178         /* HAB looks for the CSF at the end of the authenticated data therefore,
 179          * we need to subtract the size of the CSF from the actual filesize */
 180         offset = spl_image->size - CONFIG_CSF_SIZE;
 181         if (!imx_hab_authenticate_image(spl_image->load_addr,
 182                                         offset + IVT_SIZE + CSF_PAD_SIZE,
 183                                         offset)) {
 184                 image_entry();
 185         } else {
 186                 puts("spl: ERROR:  image authentication unsuccessful\n");
 187                 hang();
 188         }
 189 }
 190
 191 #endif
 192
 193 #if defined(CONFIG_MX6) && defined(CONFIG_SPL_OS_BOOT)
 194 int dram_init_banksize(void)
 195 {
 196         gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
 197         gd->bd->bi_dram[0].size = imx_ddr_size();
 198
 199         return 0;
 200 }
 201 #endif