x86, um: ... and asm-x86 move

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

arch/x86/include/asm/boot.h

@@ -0,0 +1,26 @@
+#ifndef ASM_X86__BOOT_H
+#define ASM_X86__BOOT_H
+
+/* Don't touch these, unless you really know what you're doing. */
+#define DEF_SYSSEG	0x1000
+#define DEF_SYSSIZE	0x7F00
+
+/* Internal svga startup constants */
+#define NORMAL_VGA	0xffff		/* 80x25 mode */
+#define EXTENDED_VGA	0xfffe		/* 80x50 mode */
+#define ASK_VGA		0xfffd		/* ask for it at bootup */
+
+/* Physical address where kernel should be loaded. */
+#define LOAD_PHYSICAL_ADDR ((CONFIG_PHYSICAL_START \
+				+ (CONFIG_PHYSICAL_ALIGN - 1)) \
+				& ~(CONFIG_PHYSICAL_ALIGN - 1))
+
+#ifdef CONFIG_X86_64
+#define BOOT_HEAP_SIZE	0x7000
+#define BOOT_STACK_SIZE	0x4000
+#else
+#define BOOT_HEAP_SIZE	0x4000
+#define BOOT_STACK_SIZE	0x1000
+#endif
+
+#endif /* ASM_X86__BOOT_H */