1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
/*
* (C) Copyright 2012
* Texas Instruments, <www.ti.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _SPL_H_
#define _SPL_H_
/* Platform-specific defines */
#include <linux/compiler.h>
#include <asm/spl.h>
/* Value in r0 indicates we booted from U-Boot */
#define UBOOT_NOT_LOADED_FROM_SPL 0x13578642
/* Boot type */
#define MMCSD_MODE_UNDEFINED 0
#define MMCSD_MODE_RAW 1
#define MMCSD_MODE_FS 2
#define MMCSD_MODE_EMMCBOOT 3
struct spl_image_info {
const char *name;
u8 os;
u32 load_addr;
u32 entry_point;
u32 size;
u32 flags;
};
/*
* Information required to load data from a device
*
* @dev: Pointer to the device, e.g. struct mmc *
* @priv: Private data for the device
* @bl_len: Block length for reading in bytes
* @read: Function to call to read from the device
*/
struct spl_load_info {
void *dev;
void *priv;
int bl_len;
ulong (*read)(struct spl_load_info *load, ulong sector, ulong count,
void *buf);
};
int spl_load_simple_fit(struct spl_load_info *info, ulong sector, void *fdt);
#define SPL_COPY_PAYLOAD_ONLY 1
extern struct spl_image_info spl_image;
/* SPL common functions */
void preloader_console_init(void);
u32 spl_boot_device(void);
u32 spl_boot_mode(void);
void spl_set_header_raw_uboot(void);
int spl_parse_image_header(const struct image_header *header);
void spl_board_prepare_for_linux(void);
void __noreturn jump_to_image_linux(void *arg);
int spl_start_uboot(void);
void spl_display_print(void);
/* NAND SPL functions */
int spl_nand_load_image(void);
/* OneNAND SPL functions */
int spl_onenand_load_image(void);
/* NOR SPL functions */
int spl_nor_load_image(void);
/* MMC SPL functions */
int spl_mmc_load_image(u32 boot_device);
/* YMODEM SPL functions */
int spl_ymodem_load_image(void);
/* SPI SPL functions */
int spl_spi_load_image(void);
/* Ethernet SPL functions */
int spl_net_load_image(const char *device);
/* USB SPL functions */
int spl_usb_load_image(void);
/* SATA SPL functions */
int spl_sata_load_image(void);
/* SPL FAT image functions */
int spl_load_image_fat(struct blk_desc *block_dev, int partition,
const char *filename);
int spl_load_image_fat_os(struct blk_desc *block_dev, int partition);
void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image);
/* SPL EXT image functions */
int spl_load_image_ext(struct blk_desc *block_dev, int partition,
const char *filename);
int spl_load_image_ext_os(struct blk_desc *block_dev, int partition);
/**
* spl_init() - Set up device tree and driver model in SPL if enabled
*
* Call this function in board_init_f() if you want to use device tree and
* driver model early, before board_init_r() is called. This function will
* be called from board_init_r() if not called earlier.
*
* If this is not called, then driver model will be inactive in SPL's
* board_init_f(), and no device tree will be available.
*/
int spl_init(void);
#ifdef CONFIG_SPL_BOARD_INIT
void spl_board_init(void);
#endif
/**
* spl_was_boot_source() - check if U-Boot booted from SPL
*
* This will normally be true, but if U-Boot jumps to second U-Boot, it will
* be false. This should be implemented by board-specific code.
*
* @return true if U-Boot booted from SPL, else false
*/
bool spl_was_boot_source(void);
#endif
|
