ADS5121 DIU Add diu_bmp_addr env

[u-boot] / board / ads5121 / ads5121_diu.c

diff --git a/board/ads5121/ads5121_diu.c b/board/ads5121/ads5121_diu.c
index 11450aabc666e84207a4e2c2a5db9eac0014255b..41a135314f4c09ac1e5bed53582306dafcbbf324 100644 (file)
--- a/board/ads5121/ads5121_diu.c
+++ b/board/ads5121/ads5121_diu.c
@@ -37,7 +37,11 @@
 #include <video_fb.h>
 #endif
 
+#ifdef CONFIG_FSL_DIU_LOGO_BMP
 extern unsigned int FSL_Logo_BMP[];
+#else
+#define FSL_Logo_BMP NULL
+#endif
 
 static int xres, yres;
 
@@ -61,16 +65,40 @@ void diu_set_pixel_clock(unsigned int pixclock)
        debug("DIU: Modified value of CLKDVDR = 0x%08x\n", *clkdvdr);
 }
 
+char *valid_bmp(char *addr)
+{
+       unsigned long h_addr;
+
+       h_addr = simple_strtoul(addr, NULL, 16);
+       if (h_addr < CONFIG_SYS_FLASH_BASE ||
+                       h_addr >= (CONFIG_SYS_FLASH_BASE + CONFIG_SYS_FLASH_SIZE - 1)) {
+               printf("bmp addr %lx is not a valid flash address\n", h_addr);
+               return 0;
+       } else if ((*(char *)(h_addr) != 'B') || (*(char *)(h_addr+1) != 'M')) {
+               printf("bmp addr is not a bmp\n");
+               return 0;
+       } else
+               return (char *)h_addr;
+}
+
 int ads5121_diu_init(void)
 {
        unsigned int pixel_format;
+       char *bmp = NULL;
+       char *bmp_env;
 
        xres = 1024;
        yres = 768;
        pixel_format = 0x88883316;
 
-       return fsl_diu_init(xres, pixel_format, 0,
-                    (unsigned char *)FSL_Logo_BMP);
+       debug("ads5121_diu_init\n");
+       bmp_env = getenv("diu_bmp_addr");
+       if (bmp_env) {
+               bmp = valid_bmp(bmp_env);
+       }
+       if (!bmp)
+               bmp = FSL_Logo_BMP;
+       return fsl_diu_init(xres, pixel_format, 0, (unsigned char *)bmp);
 }
 
 int ads5121diu_init_show_bmp(cmd_tbl_t *cmdtp,
@@ -79,7 +107,7 @@ int ads5121diu_init_show_bmp(cmd_tbl_t *cmdtp,
        unsigned int addr;
 
        if (argc < 2) {
-               printf("Usage:\n%s\n", cmdtp->usage);
+               cmd_usage(cmdtp);
                return 1;
        }
 
@@ -101,7 +129,7 @@ int ads5121diu_init_show_bmp(cmd_tbl_t *cmdtp,
 
 U_BOOT_CMD(
        diufb, CONFIG_SYS_MAXARGS, 1, ads5121diu_init_show_bmp,
-       "diufb init | addr - Init or Display BMP file\n",
+       "Init or Display BMP file",
        "init\n    - initialize DIU\n"
        "addr\n    - display bmp at address 'addr'\n"
        );