From: Nikita Kiryanov Date: Wed, 14 Jan 2015 08:42:51 +0000 (+0200) Subject: compulab: splash: support multiple splash sources X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=fd29dd554af6e88ff6d794886e5ab7ba176ace17;p=u-boot.git compulab: splash: support multiple splash sources Define a generic way for boards to define splash image locations: - introduce struct splash_location - introduce enum splash_storage - update cl_splash_screen_prepare() to take an array of above struct and select the appropriate one based on the splashsource environment variable (if it is not defined- use the first splash location as default). cm-t35 is updated to work with the new interface. Signed-off-by: Nikita Kiryanov Cc: Stefano Babic Cc: Igor Grinberg Acked-by: Igor Grinberg --- diff --git a/board/compulab/cm_t35/cm_t35.c b/board/compulab/cm_t35/cm_t35.c index 9a3b2ee72f..8143c05353 100644 --- a/board/compulab/cm_t35/cm_t35.c +++ b/board/compulab/cm_t35/cm_t35.c @@ -59,11 +59,18 @@ void get_board_mem_timings(struct board_sdrc_timings *timings) } #endif -#define CM_T35_SPLASH_NAND_OFFSET 0x100000 +struct splash_location splash_locations[] = { + { + .name = "nand", + .storage = SPLASH_STORAGE_NAND, + .offset = 0x100000, + }, +}; int splash_screen_prepare(void) { - return cl_splash_screen_prepare(CM_T35_SPLASH_NAND_OFFSET); + return cl_splash_screen_prepare(splash_locations, + ARRAY_SIZE(splash_locations)); } /* diff --git a/board/compulab/common/common.h b/board/compulab/common/common.h index 80753b4b73..09b4de6fe3 100644 --- a/board/compulab/common/common.h +++ b/board/compulab/common/common.h @@ -24,10 +24,21 @@ static inline int cl_usb_hub_init(int gpio, const char *label) static inline void cl_usb_hub_deinit(int gpio) {} #endif /* CONFIG_CMD_USB */ +enum splash_storage { + SPLASH_STORAGE_NAND, +}; + +struct splash_location { + char *name; + enum splash_storage storage; + u32 offset; /* offset from start of storage */ +}; + #ifdef CONFIG_SPLASH_SCREEN -int cl_splash_screen_prepare(int offset); +int cl_splash_screen_prepare(struct splash_location *locations, uint size); #else /* !CONFIG_SPLASH_SCREEN */ -static inline int cl_splash_screen_prepare(int offset) +static inline int cl_splash_screen_prepare(struct splash_location *locations, + uint size) { return -ENOSYS; } diff --git a/board/compulab/common/splash.c b/board/compulab/common/splash.c index 09a075568c..f230d6db42 100644 --- a/board/compulab/common/splash.c +++ b/board/compulab/common/splash.c @@ -30,12 +30,26 @@ static int splash_nand_read(u32 bmp_load_addr, int offset, size_t read_size) } #endif -static int splash_storage_read(u32 bmp_load_addr, int offset, size_t read_size) +static int splash_storage_read(struct splash_location *location, + u32 bmp_load_addr, size_t read_size) { - return splash_nand_read(bmp_load_addr, offset, read_size); + u32 offset; + + if (!location) + return -EINVAL; + + offset = location->offset; + switch (location->storage) { + case SPLASH_STORAGE_NAND: + return splash_nand_read(bmp_load_addr, offset, read_size); + default: + printf("Unknown splash location\n"); + } + + return -EINVAL; } -static int splash_load_raw(u32 bmp_load_addr, int offset) +static int splash_load_raw(struct splash_location *location, u32 bmp_load_addr) { struct bmp_header *bmp_hdr; int res; @@ -44,7 +58,7 @@ static int splash_load_raw(u32 bmp_load_addr, int offset) if (bmp_load_addr + bmp_header_size >= gd->start_addr_sp) goto splash_address_too_high; - res = splash_storage_read(bmp_load_addr, offset, bmp_header_size); + res = splash_storage_read(location, bmp_load_addr, bmp_header_size); if (res < 0) return res; @@ -54,7 +68,7 @@ static int splash_load_raw(u32 bmp_load_addr, int offset) if (bmp_load_addr + bmp_size >= gd->start_addr_sp) goto splash_address_too_high; - return splash_storage_read(bmp_load_addr, offset, bmp_size); + return splash_storage_read(location, bmp_load_addr, bmp_size); splash_address_too_high: printf("Error: splashimage address too high. Data overwrites U-Boot " @@ -63,8 +77,46 @@ splash_address_too_high: return -EFAULT; } -int cl_splash_screen_prepare(int offset) +/** + * select_splash_location - return the splash location based on board support + * and env variable "splashsource". + * + * @locations: An array of supported splash locations. + * @size: Size of splash_locations array. + * + * @return: If a null set of splash locations is given, or + * splashsource env variable is set to unsupported value + * return NULL. + * If splashsource env variable is not defined + * return the first entry in splash_locations as default. + * If splashsource env variable contains a supported value + * return the location selected by splashsource. + */ +static struct splash_location *select_splash_location( + struct splash_location *locations, uint size) +{ + int i; + char *env_splashsource; + + if (!locations || size == 0) + return NULL; + + env_splashsource = getenv("splashsource"); + if (env_splashsource == NULL) + return &locations[0]; + + for (i = 0; i < size; i++) { + if (!strcmp(locations[i].name, env_splashsource)) + return &locations[i]; + } + + printf("splashsource env variable set to unsupported value\n"); + return NULL; +} + +int cl_splash_screen_prepare(struct splash_location *locations, uint size) { + struct splash_location *splash_location; char *env_splashimage_value; u32 bmp_load_addr; @@ -78,5 +130,9 @@ int cl_splash_screen_prepare(int offset) return -EFAULT; } - return splash_load_raw(bmp_load_addr, offset); + splash_location = select_splash_location(locations, size); + if (!splash_location) + return -EINVAL; + + return splash_load_raw(splash_location, bmp_load_addr); }