include/spl.h

   1 /*
   2  * (C) Copyright 2012
   3  * Texas Instruments, <www.ti.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7 #ifndef _SPL_H_
   8 #define _SPL_H_
   9
  10 /* Platform-specific defines */
  11 #include <linux/compiler.h>
  12 #include <asm/spl.h>
  13
  14 /* Value in r0 indicates we booted from U-Boot */
  15 #define UBOOT_NOT_LOADED_FROM_SPL       0x13578642
  16
  17 /* Boot type */
  18 #define MMCSD_MODE_UNDEFINED    0
  19 #define MMCSD_MODE_RAW          1
  20 #define MMCSD_MODE_FS           2
  21 #define MMCSD_MODE_EMMCBOOT     3
  22
  23 struct spl_image_info {
  24         const char *name;
  25         u8 os;
  26         u32 load_addr;
  27         u32 entry_point;
  28         u32 size;
  29         u32 flags;
  30 };
  31
  32 #define SPL_COPY_PAYLOAD_ONLY   1
  33
  34 extern struct spl_image_info spl_image;
  35
  36 /* SPL common functions */
  37 void preloader_console_init(void);
  38 u32 spl_boot_device(void);
  39 u32 spl_boot_mode(void);
  40 void spl_set_header_raw_uboot(void);
  41 void spl_parse_image_header(const struct image_header *header);
  42 void spl_board_prepare_for_linux(void);
  43 void __noreturn jump_to_image_linux(void *arg);
  44 int spl_start_uboot(void);
  45 void spl_display_print(void);
  46
  47 /* NAND SPL functions */
  48 int spl_nand_load_image(void);
  49
  50 /* OneNAND SPL functions */
  51 int spl_onenand_load_image(void);
  52
  53 /* NOR SPL functions */
  54 int spl_nor_load_image(void);
  55
  56 /* MMC SPL functions */
  57 int spl_mmc_load_image(u32 boot_device);
  58
  59 /* YMODEM SPL functions */
  60 int spl_ymodem_load_image(void);
  61
  62 /* SPI SPL functions */
  63 int spl_spi_load_image(void);
  64
  65 /* Ethernet SPL functions */
  66 int spl_net_load_image(const char *device);
  67
  68 /* USB SPL functions */
  69 int spl_usb_load_image(void);
  70
  71 /* SATA SPL functions */
  72 int spl_sata_load_image(void);
  73
  74 /* SPL FAT image functions */
  75 int spl_load_image_fat(block_dev_desc_t *block_dev, int partition, const char *filename);
  76 int spl_load_image_fat_os(block_dev_desc_t *block_dev, int partition);
  77
  78 void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image);
  79
  80 /* SPL EXT image functions */
  81 int spl_load_image_ext(block_dev_desc_t *block_dev, int partition, const char *filename);
  82 int spl_load_image_ext_os(block_dev_desc_t *block_dev, int partition);
  83
  84 /**
  85  * spl_init() - Set up device tree and driver model in SPL if enabled
  86  *
  87  * Call this function in board_init_f() if you want to use device tree and
  88  * driver model early, before board_init_r() is called. This function will
  89  * be called from board_init_r() if not called earlier.
  90  *
  91  * If this is not called, then driver model will be inactive in SPL's
  92  * board_init_f(), and no device tree will be available.
  93  */
  94 int spl_init(void);
  95
  96 #ifdef CONFIG_SPL_BOARD_INIT
  97 void spl_board_init(void);
  98 #endif
  99
 100 /**
 101  * spl_was_boot_source() - check if U-Boot booted from SPL
 102  *
 103  * This will normally be true, but if U-Boot jumps to second U-Boot, it will
 104  * be false. This should be implemented by board-specific code.
 105  *
 106  * @return true if U-Boot booted from SPL, else false
 107  */
 108 bool spl_was_boot_source(void);
 109
 110 #endif