global_data.h: Change ram_top type to phys_addr_t
It's possible to have ram_top above 4 GiB in a 32-bit system, hence
we need to declare ram_top as `phys_addr_t`.
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/include/asm-generic/global_data.h b/include/asm-generic/global_data.h
index b6f707e..998beb0 100644
--- a/include/asm-generic/global_data.h
+++ b/include/asm-generic/global_data.h
@@ -147,7 +147,7 @@
/**
* @ram_top: top address of RAM used by U-Boot
*/
- unsigned long ram_top;
+ phys_addr_t ram_top;
/**
* @relocaddr: start address of U-Boot in RAM
*