i386: move xen

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 38 insertions, 0 deletions

diff --git a/arch/x86/xen/xen-head.S b/arch/x86/xen/xen-head.S
new file mode 100644
index 000000000000..f8d6937db2ec
--- /dev/null
+++ b/arch/x86/xen/xen-head.S
@@ -0,0 +1,38 @@
+/* Xen-specific pieces of head.S, intended to be included in the right
+        place in head.S */
+
+#ifdef CONFIG_XEN
+
+#include <linux/elfnote.h>
+#include <asm/boot.h>
+#include <xen/interface/elfnote.h>
+
+.pushsection .init.text
+ENTRY(startup_xen)
+        movl %esi,xen_start_info
+        cld
+        movl $(init_thread_union+THREAD_SIZE),%esp
+        jmp xen_start_kernel
+.popsection
+
+.pushsection .bss.page_aligned
+        .align PAGE_SIZE_asm
+ENTRY(hypercall_page)
+        .skip 0x1000
+.popsection
+
+        ELFNOTE(Xen, XEN_ELFNOTE_GUEST_OS,       .asciz "linux")
+        ELFNOTE(Xen, XEN_ELFNOTE_GUEST_VERSION,  .asciz "2.6")
+        ELFNOTE(Xen, XEN_ELFNOTE_XEN_VERSION,    .asciz "xen-3.0")
+        ELFNOTE(Xen, XEN_ELFNOTE_VIRT_BASE,      .long  __PAGE_OFFSET)
+        ELFNOTE(Xen, XEN_ELFNOTE_ENTRY,          .long  startup_xen)
+        ELFNOTE(Xen, XEN_ELFNOTE_HYPERCALL_PAGE, .long  hypercall_page)
+        ELFNOTE(Xen, XEN_ELFNOTE_FEATURES,       .asciz "!writable_page_tables|pae_pgdir_above_4gb")
+#ifdef CONFIG_X86_PAE
+        ELFNOTE(Xen, XEN_ELFNOTE_PAE_MODE,       .asciz "yes")
+#else
+        ELFNOTE(Xen, XEN_ELFNOTE_PAE_MODE,       .asciz "no")
+#endif
+        ELFNOTE(Xen, XEN_ELFNOTE_LOADER,         .asciz "generic")
+
+#endif /*CONFIG_XEN */