2 * (C) Copyright 2014 CompuLab, Ltd. <www.compulab.co.il>
4 * Authors: Igor Grinberg <grinberg@compulab.co.il>
6 * SPDX-License-Identifier: GPL-2.0+
13 #include <spi_flash.h>
15 #include <bmp_layout.h>
18 DECLARE_GLOBAL_DATA_PTR
;
20 #ifdef CONFIG_SPI_FLASH
21 static struct spi_flash
*sf
;
22 static int splash_sf_read_raw(u32 bmp_load_addr
, int offset
, size_t read_size
)
25 sf
= spi_flash_probe(CONFIG_SF_DEFAULT_BUS
,
27 CONFIG_SF_DEFAULT_SPEED
,
28 CONFIG_SF_DEFAULT_MODE
);
33 return spi_flash_read(sf
, offset
, read_size
, (void *)bmp_load_addr
);
36 static int splash_sf_read_raw(u32 bmp_load_addr
, int offset
, size_t read_size
)
38 debug("%s: sf support not available\n", __func__
);
43 #ifdef CONFIG_CMD_NAND
44 static int splash_nand_read_raw(u32 bmp_load_addr
, int offset
, size_t read_size
)
46 return nand_read_skip_bad(&nand_info
[nand_curr_device
], offset
,
48 nand_info
[nand_curr_device
].size
,
49 (u_char
*)bmp_load_addr
);
52 static int splash_nand_read_raw(u32 bmp_load_addr
, int offset
, size_t read_size
)
54 debug("%s: nand support not available\n", __func__
);
59 static int splash_storage_read_raw(struct splash_location
*location
,
60 u32 bmp_load_addr
, size_t read_size
)
67 offset
= location
->offset
;
68 switch (location
->storage
) {
69 case SPLASH_STORAGE_NAND
:
70 return splash_nand_read_raw(bmp_load_addr
, offset
, read_size
);
71 case SPLASH_STORAGE_SF
:
72 return splash_sf_read_raw(bmp_load_addr
, offset
, read_size
);
74 printf("Unknown splash location\n");
80 static int splash_load_raw(struct splash_location
*location
, u32 bmp_load_addr
)
82 struct bmp_header
*bmp_hdr
;
84 size_t bmp_size
, bmp_header_size
= sizeof(struct bmp_header
);
86 if (bmp_load_addr
+ bmp_header_size
>= gd
->start_addr_sp
)
87 goto splash_address_too_high
;
89 res
= splash_storage_read_raw(location
, bmp_load_addr
, bmp_header_size
);
93 bmp_hdr
= (struct bmp_header
*)bmp_load_addr
;
94 bmp_size
= le32_to_cpu(bmp_hdr
->file_size
);
96 if (bmp_load_addr
+ bmp_size
>= gd
->start_addr_sp
)
97 goto splash_address_too_high
;
99 return splash_storage_read_raw(location
, bmp_load_addr
, bmp_size
);
101 splash_address_too_high
:
102 printf("Error: splashimage address too high. Data overwrites U-Boot and/or placed beyond DRAM boundaries.\n");
107 static int splash_select_fs_dev(struct splash_location
*location
)
111 switch (location
->storage
) {
112 case SPLASH_STORAGE_MMC
:
113 res
= fs_set_blk_dev("mmc", location
->devpart
, FS_TYPE_ANY
);
116 printf("Error: unsupported location storage.\n");
121 printf("Error: could not access storage.\n");
126 #define SPLASH_SOURCE_DEFAULT_FILE_NAME "splash.bmp"
128 static int splash_load_fs(struct splash_location
*location
, u32 bmp_load_addr
)
134 splash_file
= getenv("splashfile");
136 splash_file
= SPLASH_SOURCE_DEFAULT_FILE_NAME
;
138 res
= splash_select_fs_dev(location
);
142 res
= fs_size(splash_file
, &bmp_size
);
144 printf("Error (%d): cannot determine file size\n", res
);
148 if (bmp_load_addr
+ bmp_size
>= gd
->start_addr_sp
) {
149 printf("Error: splashimage address too high. Data overwrites U-Boot and/or placed beyond DRAM boundaries.\n");
153 splash_select_fs_dev(location
);
154 return fs_read(splash_file
, bmp_load_addr
, 0, 0, NULL
);
158 * select_splash_location - return the splash location based on board support
159 * and env variable "splashsource".
161 * @locations: An array of supported splash locations.
162 * @size: Size of splash_locations array.
164 * @return: If a null set of splash locations is given, or
165 * splashsource env variable is set to unsupported value
167 * If splashsource env variable is not defined
168 * return the first entry in splash_locations as default.
169 * If splashsource env variable contains a supported value
170 * return the location selected by splashsource.
172 static struct splash_location
*select_splash_location(
173 struct splash_location
*locations
, uint size
)
176 char *env_splashsource
;
178 if (!locations
|| size
== 0)
181 env_splashsource
= getenv("splashsource");
182 if (env_splashsource
== NULL
)
183 return &locations
[0];
185 for (i
= 0; i
< size
; i
++) {
186 if (!strcmp(locations
[i
].name
, env_splashsource
))
187 return &locations
[i
];
190 printf("splashsource env variable set to unsupported value\n");
195 * splash_source_load - load splash image from a supported location.
197 * Select a splash image location based on the value of splashsource environment
198 * variable and the board supported splash source locations, and load a
199 * splashimage to the address pointed to by splashimage environment variable.
201 * @locations: An array of supported splash locations.
202 * @size: Size of splash_locations array.
204 * @return: 0 on success, negative value on failure.
206 int splash_source_load(struct splash_location
*locations
, uint size
)
208 struct splash_location
*splash_location
;
209 char *env_splashimage_value
;
212 env_splashimage_value
= getenv("splashimage");
213 if (env_splashimage_value
== NULL
)
216 bmp_load_addr
= simple_strtoul(env_splashimage_value
, 0, 16);
217 if (bmp_load_addr
== 0) {
218 printf("Error: bad splashimage address specified\n");
222 splash_location
= select_splash_location(locations
, size
);
223 if (!splash_location
)
226 if (splash_location
->flags
& SPLASH_STORAGE_RAW
)
227 return splash_load_raw(splash_location
, bmp_load_addr
);
228 else if (splash_location
->flags
& SPLASH_STORAGE_FS
)
229 return splash_load_fs(splash_location
, bmp_load_addr
);