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 /* 33 * Information required to load data from a device 34 * 35 * @dev: Pointer to the device, e.g. struct mmc * 36 * @priv: Private data for the device 37 * @bl_len: Block length for reading in bytes 38 * @read: Function to call to read from the device 39 */ 40 struct spl_load_info { 41 void *dev; 42 void *priv; 43 int bl_len; 44 ulong (*read)(struct spl_load_info *load, ulong sector, ulong count, 45 void *buf); 46 }; 47 48 int spl_load_simple_fit(struct spl_load_info *info, ulong sector, void *fdt); 49 50 #define SPL_COPY_PAYLOAD_ONLY 1 51 52 extern struct spl_image_info spl_image; 53 54 /* SPL common functions */ 55 void preloader_console_init(void); 56 u32 spl_boot_device(void); 57 u32 spl_boot_mode(void); 58 void spl_set_header_raw_uboot(void); 59 void spl_parse_image_header(const struct image_header *header); 60 void spl_board_prepare_for_linux(void); 61 void __noreturn jump_to_image_linux(void *arg); 62 int spl_start_uboot(void); 63 void spl_display_print(void); 64 65 /* NAND SPL functions */ 66 int spl_nand_load_image(void); 67 68 /* OneNAND SPL functions */ 69 int spl_onenand_load_image(void); 70 71 /* NOR SPL functions */ 72 int spl_nor_load_image(void); 73 74 /* MMC SPL functions */ 75 int spl_mmc_load_image(u32 boot_device); 76 77 /* YMODEM SPL functions */ 78 int spl_ymodem_load_image(void); 79 80 /* SPI SPL functions */ 81 int spl_spi_load_image(void); 82 83 /* Ethernet SPL functions */ 84 int spl_net_load_image(const char *device); 85 86 /* USB SPL functions */ 87 int spl_usb_load_image(void); 88 89 /* SATA SPL functions */ 90 int spl_sata_load_image(void); 91 92 /* SPL FAT image functions */ 93 int spl_load_image_fat(block_dev_desc_t *block_dev, int partition, const char *filename); 94 int spl_load_image_fat_os(block_dev_desc_t *block_dev, int partition); 95 96 void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image); 97 98 /* SPL EXT image functions */ 99 int spl_load_image_ext(block_dev_desc_t *block_dev, int partition, const char *filename); 100 int spl_load_image_ext_os(block_dev_desc_t *block_dev, int partition); 101 102 /** 103 * spl_init() - Set up device tree and driver model in SPL if enabled 104 * 105 * Call this function in board_init_f() if you want to use device tree and 106 * driver model early, before board_init_r() is called. This function will 107 * be called from board_init_r() if not called earlier. 108 * 109 * If this is not called, then driver model will be inactive in SPL's 110 * board_init_f(), and no device tree will be available. 111 */ 112 int spl_init(void); 113 114 #ifdef CONFIG_SPL_BOARD_INIT 115 void spl_board_init(void); 116 #endif 117 118 /** 119 * spl_was_boot_source() - check if U-Boot booted from SPL 120 * 121 * This will normally be true, but if U-Boot jumps to second U-Boot, it will 122 * be false. This should be implemented by board-specific code. 123 * 124 * @return true if U-Boot booted from SPL, else false 125 */ 126 bool spl_was_boot_source(void); 127 128 #endif 129