diff --git a/common/spl/Kconfig b/common/spl/Kconfig
index 74f7abc..bb99f1f 100644
--- a/common/spl/Kconfig
+++ b/common/spl/Kconfig
@@ -389,6 +389,16 @@
 	  Enable booting directly to an OS from SPL.
 	  for more info read doc/README.falcon
 
+if SPL_OS_BOOT
+config SYS_OS_BASE
+	hex "addr, where OS is found"
+	depends on SPL && SPL_NOR_SUPPORT
+	help
+	  Specify the address, where the OS image is found, which
+	  gets booted.
+
+endif # SPL_OS_BOOT
+
 config SPL_POST_MEM_SUPPORT
 	bool "Support POST drivers"
 	depends on SPL
diff --git a/configs/a3m071_defconfig b/configs/a3m071_defconfig
index 5356489..ae696b5 100644
--- a/configs/a3m071_defconfig
+++ b/configs/a3m071_defconfig
@@ -11,6 +11,7 @@
 CONFIG_SPL=y
 CONFIG_SPL_NOR_SUPPORT=y
 CONFIG_SPL_OS_BOOT=y
+CONFIG_SYS_OS_BASE=0xfc200000
 CONFIG_HUSH_PARSER=y
 CONFIG_LOOPW=y
 # CONFIG_CMD_SETEXPR is not set
diff --git a/configs/a4m2k_defconfig b/configs/a4m2k_defconfig
index c54689d..144291e 100644
--- a/configs/a4m2k_defconfig
+++ b/configs/a4m2k_defconfig
@@ -12,6 +12,7 @@
 CONFIG_SPL=y
 CONFIG_SPL_NOR_SUPPORT=y
 CONFIG_SPL_OS_BOOT=y
+CONFIG_SYS_OS_BASE=0xfc200000
 CONFIG_HUSH_PARSER=y
 CONFIG_LOOPW=y
 # CONFIG_CMD_SETEXPR is not set
diff --git a/configs/microblaze-generic_defconfig b/configs/microblaze-generic_defconfig
index bc97f60..3dbf48a 100644
--- a/configs/microblaze-generic_defconfig
+++ b/configs/microblaze-generic_defconfig
@@ -16,6 +16,7 @@
 CONFIG_SPL_SYS_MALLOC_SIMPLE=y
 CONFIG_SPL_NOR_SUPPORT=y
 CONFIG_SPL_OS_BOOT=y
+CONFIG_SYS_OS_BASE=0x2c060000
 CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="U-Boot-mONStR> "
 CONFIG_CMD_ASKENV=y
diff --git a/include/configs/a3m071.h b/include/configs/a3m071.h
index 93be3d6..ee75785 100644
--- a/include/configs/a3m071.h
+++ b/include/configs/a3m071.h
@@ -330,7 +330,6 @@
 
 #undef	CONFIG_BOOTARGS
 
-#define CONFIG_SYS_OS_BASE	0xfc200000
 #define CONFIG_SYS_FDT_BASE	0xfc1e0000
 #define CONFIG_SYS_FDT_SIZE	(16<<10)
 
diff --git a/include/configs/microblaze-generic.h b/include/configs/microblaze-generic.h
index 32b0c62..2a7006f 100644
--- a/include/configs/microblaze-generic.h
+++ b/include/configs/microblaze-generic.h
@@ -293,8 +293,6 @@
 
 /* for booting directly linux */
 
-#define CONFIG_SYS_OS_BASE		(CONFIG_SYS_FLASH_BASE + \
-					 0x60000)
 #define CONFIG_SYS_FDT_BASE		(CONFIG_SYS_FLASH_BASE + \
 					 0x40000)
 #define CONFIG_SYS_FDT_SIZE		(16<<10)