[x86] remove uses of magic macros for boot_params access

Instead of using magic macros for boot_params access, simply use the
boot_params structure.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/asm-x86/bootparam.h b/include/asm-x86/bootparam.h
index b91b01783e4b..ef67b59dbdb9 100644
--- a/include/asm-x86/bootparam.h
+++ b/include/asm-x86/bootparam.h
@@ -14,6 +14,9 @@ struct setup_header {
         u16     root_flags;
         u32     syssize;
         u16     ram_size;
+#define RAMDISK_IMAGE_START_MASK        0x07FF
+#define RAMDISK_PROMPT_FLAG             0x8000
+#define RAMDISK_LOAD_FLAG               0x4000
         u16     vid_mode;
         u16     root_dev;
         u16     boot_flag;