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 (file)
--- a/include/asm-generic/global_data.h
+++ b/include/asm-generic/global_data.h
@@ -147,7 +147,7 @@ struct global_data {
        /**
         * @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
         *