mpc5121: determine RAM size using get_ram_size()
Configure CONFIG_SYS_MAX_RAM_SIZE address range in
DDR Local Access Window and determine the RAM size.
Fix DDR LAW afterwards using detected RAM size.
Signed-off-by: Anatolij Gustschin <agust@denx.de>
diff --git a/include/configs/mpc5121ads.h b/include/configs/mpc5121ads.h
index 8ecc9e1..5281042 100644
--- a/include/configs/mpc5121ads.h
+++ b/include/configs/mpc5121ads.h
@@ -85,6 +85,7 @@
#endif
#define CONFIG_SYS_DDR_BASE 0x00000000 /* DDR is system memory*/
#define CONFIG_SYS_SDRAM_BASE CONFIG_SYS_DDR_BASE
+#define CONFIG_SYS_MAX_RAM_SIZE 0x20000000
#define CONFIG_SYS_IOCTRL_MUX_DDR 0x00000036