[U-Boot] [PATCH 5/5] cm-t35: add support for loading splash image from NAND

Nikita Kiryanov
2012-12-23T07:03:48Z

Add support for loading splash image from NAND

Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
---
board/cm_t35/cm_t35.c | 61 ++++++++++++++++++++++++++++++++++++++++++++++
include/configs/cm_t35.h | 4 +++
2 files changed, 65 insertions(+)

diff --git a/board/cm_t35/cm_t35.c b/board/cm_t35/cm_t35.c
index 8f3d735..8dbdb44 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 +77,65 @@ 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;
+ }
+
+ 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 8544b15..5e0d261 100644
--- a/include/configs/cm_t35.h
+++ b/include/configs/cm_t35.h
@@ -344,5 +344,9 @@
#define CONFIG_VIDEO_OMAP3

#define CONFIG_LCD
+#define CONFIG_SPLASH_SCREEN
+#define CONFIG_CMD_BMP
+#define CONFIG_BMP_16BPP
+#define CONFIG_SPLASH_SCREEN_PREPARE

#endif /* __CONFIG_H */
--
1.7.10.4