Add support for loading splash image from NAND
Cc: Anatolij Gustschin agust@denx.de Cc: Jeroen Hofstee jeroen@myspectrum.nl Signed-off-by: Nikita Kiryanov nikita@compulab.co.il Signed-off-by: Igor Grinberg grinberg@compulab.co.il --- Changes in V2: - Added fix to bmp_load_addr to comply with what happens in lcd.c following patch number 3.
board/cm_t35/cm_t35.c | 65 ++++++++++++++++++++++++++++++++++++++++++++++ include/configs/cm_t35.h | 4 +++ 2 files changed, 69 insertions(+)
diff --git a/board/cm_t35/cm_t35.c b/board/cm_t35/cm_t35.c index 8f3d735..5fd71f9 100644 --- a/board/cm_t35/cm_t35.c +++ b/board/cm_t35/cm_t35.c @@ -33,7 +33,9 @@ #include <net.h> #include <i2c.h> #include <usb.h> +#include <nand.h> #include <twl4030.h> +#include <bmp_layout.h> #include <linux/compiler.h>
#include <asm/io.h> @@ -75,6 +77,69 @@ static u32 gpmc_nand_config[GPMC_MAX_REG] = { 0, };
+#ifdef CONFIG_LCD +#ifdef CONFIG_CMD_NAND +static int splash_load_from_nand(u32 bmp_load_addr) +{ + struct bmp_header *bmp_hdr; + int res, splash_screen_nand_offset = 0x100000; + size_t bmp_size, bmp_header_size = sizeof(struct bmp_header); + + if (bmp_load_addr + bmp_header_size >= gd->start_addr_sp) + goto splash_address_too_high; + + res = nand_read_skip_bad(&nand_info[nand_curr_device], + splash_screen_nand_offset, &bmp_header_size, + (u_char *)bmp_load_addr); + if (res < 0) + return res; + + bmp_hdr = (struct bmp_header *)bmp_load_addr; + bmp_size = le32_to_cpu(bmp_hdr->file_size); + + if (bmp_load_addr + bmp_size >= gd->start_addr_sp) + goto splash_address_too_high; + + return nand_read_skip_bad(&nand_info[nand_curr_device], + splash_screen_nand_offset, &bmp_size, + (u_char *)bmp_load_addr); + +splash_address_too_high: + printf("Error: splashimage address too high. Data overwrites U-Boot " + "and/or placed beyond DRAM boundaries.\n"); + + return -1; +} +#else +static inline int splash_load_from_nand(void) +{ + return -1; +} +#endif /* CONFIG_CMD_NAND */ + +int board_splash_screen_prepare(void) +{ + char *env_splashimage_value; + u32 bmp_load_addr; + + env_splashimage_value = getenv("splashimage"); + if (env_splashimage_value == NULL) + return -1; + + bmp_load_addr = simple_strtoul(env_splashimage_value, 0, 16); + if (bmp_load_addr == 0) { + printf("Error: bad splashimage address specified\n"); + return -1; + } + + /* Fix bmp_load_addr to the alignment that lcd.c expects */ + if (bmp_load_addr % 4 != 2) + bmp_load_addr += (bmp_load_addr % 4) ?: 2; + + return splash_load_from_nand(bmp_load_addr); +} +#endif /* CONFIG_LCD */ + /* * Routine: board_init * Description: hardware init. diff --git a/include/configs/cm_t35.h b/include/configs/cm_t35.h index 46d35ba..53c4e3c 100644 --- a/include/configs/cm_t35.h +++ b/include/configs/cm_t35.h @@ -344,5 +344,9 @@ #define LCD_BPP LCD_COLOR16
#define CONFIG_LCD +#define CONFIG_SPLASH_SCREEN +#define CONFIG_CMD_BMP +#define CONFIG_BMP_16BPP +#define CONFIG_SPLASH_SCREEN_PREPARE
#endif /* __CONFIG_H */