x86: adjust ramdisk load address

By default, ramdisk load address is defined to 02000000 in env string.
When loading bzImage to 01000000 (default address), there's a chance that
the ramdisk header would be overwritten by the kernel. Thus increase the
gap and make ramdisk load at 04000000 by default and also this patch
introduces a new configuration item CONFIG_RAMDISK_ADDR for this purpose

Signed-off-by: Miao Yan <yanmiaobest@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/include/configs/x86-common.h b/include/configs/x86-common.h
index 70ec103..4182a3b 100644 (file)
--- a/include/configs/x86-common.h
+++ b/include/configs/x86-common.h
@@ -208,6 +208,7 @@
 #define CONFIG_HOSTNAME                x86
 #define CONFIG_BOOTFILE                "bzImage"
 #define CONFIG_LOADADDR                0x1000000
+#define CONFIG_RAMDISK_ADDR            0x4000000
 
 #define CONFIG_EXTRA_ENV_SETTINGS                      \
        CONFIG_STD_DEVICES_SETTINGS                     \
@@ -215,7 +216,7 @@
        "netdev=eth0\0"                                 \
        "consoledev=ttyS0\0"                            \
        "othbootargs=acpi=off\0"                        \
-       "ramdiskaddr=0x2000000\0"                       \
+       "ramdiskaddr=0x4000000\0"                       \
        "ramdiskfile=initramfs.gz\0"
 
 #define CONFIG_RAMBOOTCOMMAND                          \