]>
git.ipfire.org Git - thirdparty/u-boot.git/blob - common/splash_source.c
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>
17 DECLARE_GLOBAL_DATA_PTR
;
19 #ifdef CONFIG_SPI_FLASH
20 static struct spi_flash
*sf
;
21 static int splash_sf_read(u32 bmp_load_addr
, int offset
, size_t read_size
)
24 sf
= spi_flash_probe(CONFIG_SF_DEFAULT_BUS
,
26 CONFIG_SF_DEFAULT_SPEED
,
27 CONFIG_SF_DEFAULT_MODE
);
32 return spi_flash_read(sf
, offset
, read_size
, (void *)bmp_load_addr
);
35 static int splash_sf_read(u32 bmp_load_addr
, int offset
, size_t read_size
)
37 debug("%s: sf support not available\n", __func__
);
42 #ifdef CONFIG_CMD_NAND
43 static int splash_nand_read(u32 bmp_load_addr
, int offset
, size_t read_size
)
45 return nand_read_skip_bad(&nand_info
[nand_curr_device
], offset
,
47 nand_info
[nand_curr_device
].size
,
48 (u_char
*)bmp_load_addr
);
51 static int splash_nand_read(u32 bmp_load_addr
, int offset
, size_t read_size
)
53 debug("%s: nand support not available\n", __func__
);
58 static int splash_storage_read(struct splash_location
*location
,
59 u32 bmp_load_addr
, size_t read_size
)
66 offset
= location
->offset
;
67 switch (location
->storage
) {
68 case SPLASH_STORAGE_NAND
:
69 return splash_nand_read(bmp_load_addr
, offset
, read_size
);
70 case SPLASH_STORAGE_SF
:
71 return splash_sf_read(bmp_load_addr
, offset
, read_size
);
73 printf("Unknown splash location\n");
79 static int splash_load_raw(struct splash_location
*location
, u32 bmp_load_addr
)
81 struct bmp_header
*bmp_hdr
;
83 size_t bmp_size
, bmp_header_size
= sizeof(struct bmp_header
);
85 if (bmp_load_addr
+ bmp_header_size
>= gd
->start_addr_sp
)
86 goto splash_address_too_high
;
88 res
= splash_storage_read(location
, bmp_load_addr
, bmp_header_size
);
92 bmp_hdr
= (struct bmp_header
*)bmp_load_addr
;
93 bmp_size
= le32_to_cpu(bmp_hdr
->file_size
);
95 if (bmp_load_addr
+ bmp_size
>= gd
->start_addr_sp
)
96 goto splash_address_too_high
;
98 return splash_storage_read(location
, bmp_load_addr
, bmp_size
);
100 splash_address_too_high
:
101 printf("Error: splashimage address too high. Data overwrites U-Boot and/or placed beyond DRAM boundaries.\n");
107 * select_splash_location - return the splash location based on board support
108 * and env variable "splashsource".
110 * @locations: An array of supported splash locations.
111 * @size: Size of splash_locations array.
113 * @return: If a null set of splash locations is given, or
114 * splashsource env variable is set to unsupported value
116 * If splashsource env variable is not defined
117 * return the first entry in splash_locations as default.
118 * If splashsource env variable contains a supported value
119 * return the location selected by splashsource.
121 static struct splash_location
*select_splash_location(
122 struct splash_location
*locations
, uint size
)
125 char *env_splashsource
;
127 if (!locations
|| size
== 0)
130 env_splashsource
= getenv("splashsource");
131 if (env_splashsource
== NULL
)
132 return &locations
[0];
134 for (i
= 0; i
< size
; i
++) {
135 if (!strcmp(locations
[i
].name
, env_splashsource
))
136 return &locations
[i
];
139 printf("splashsource env variable set to unsupported value\n");
144 * splash_source_load - load splash image from a supported location.
146 * Select a splash image location based on the value of splashsource environment
147 * variable and the board supported splash source locations, and load a
148 * splashimage to the address pointed to by splashimage environment variable.
150 * @locations: An array of supported splash locations.
151 * @size: Size of splash_locations array.
153 * @return: 0 on success, negative value on failure.
155 int splash_source_load(struct splash_location
*locations
, uint size
)
157 struct splash_location
*splash_location
;
158 char *env_splashimage_value
;
161 env_splashimage_value
= getenv("splashimage");
162 if (env_splashimage_value
== NULL
)
165 bmp_load_addr
= simple_strtoul(env_splashimage_value
, 0, 16);
166 if (bmp_load_addr
== 0) {
167 printf("Error: bad splashimage address specified\n");
171 splash_location
= select_splash_location(locations
, size
);
172 if (!splash_location
)
175 return splash_load_raw(splash_location
, bmp_load_addr
);