[new uImage] Provide ability to restrict region used for boot images

[karo-tx-uboot.git] / common / image.c

diff --git a/common/image.c b/common/image.c
index 0b718119f4d07466bcb1c38cb7cdd8e649e96ac3..9e446faa730702644b3fa62187301ea2a0399c69 100644 (file)
--- a/common/image.c
+++ b/common/image.c
@@ -132,6 +132,32 @@ int getenv_autostart (void)
        return (s && (*s == 'n')) ? 0 : 1;
 }
 
+ulong getenv_bootm_low(void)
+{
+       char *s = getenv ("bootm_low");
+       if (s) {
+               ulong tmp = simple_strtoul (s, NULL, 16);
+               return tmp;
+       }
+
+#ifdef CFG_SDRAM_BASE
+       return CFG_SDRAM_BASE;
+#else
+       return 0;
+#endif
+}
+
+ulong getenv_bootm_size(void)
+{
+       char *s = getenv ("bootm_size");
+       if (s) {
+               ulong tmp = simple_strtoul (s, NULL, 16);
+               return tmp;
+       }
+
+       return gd->bd->bi_memsize;
+}
+
 void memmove_wd (void *to, void *from, size_t len, ulong chunksz)
 {
 #if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)