arch/x86/xen/xen-head.S

   1 /* Xen-specific pieces of head.S, intended to be included in the right
   2         place in head.S */
   3
   4 #ifdef CONFIG_XEN
   5
   6 #include <linux/elfnote.h>
   7 #include <linux/init.h>
   8 #include <asm/boot.h>
   9 #include <xen/interface/elfnote.h>
  10 #include <asm/xen/interface.h>
  11
  12         __INIT
  13 ENTRY(startup_xen)
  14         movl %esi,xen_start_info
  15         cld
  16         movl $(init_thread_union+THREAD_SIZE),%esp
  17         jmp xen_start_kernel
  18
  19         __FINIT
  20
  21 .pushsection .text
  22         .align PAGE_SIZE_asm
  23 ENTRY(hypercall_page)
  24         .skip 0x1000
  25 .popsection
  26
  27         ELFNOTE(Xen, XEN_ELFNOTE_GUEST_OS,       .asciz "linux")
  28         ELFNOTE(Xen, XEN_ELFNOTE_GUEST_VERSION,  .asciz "2.6")
  29         ELFNOTE(Xen, XEN_ELFNOTE_XEN_VERSION,    .asciz "xen-3.0")
  30         ELFNOTE(Xen, XEN_ELFNOTE_VIRT_BASE,      .long  __PAGE_OFFSET)
  31         ELFNOTE(Xen, XEN_ELFNOTE_ENTRY,          .long  startup_xen)
  32         ELFNOTE(Xen, XEN_ELFNOTE_HYPERCALL_PAGE, .long  hypercall_page)
  33         ELFNOTE(Xen, XEN_ELFNOTE_FEATURES,       .asciz "!writable_page_tables|pae_pgdir_above_4gb")
  34         ELFNOTE(Xen, XEN_ELFNOTE_PAE_MODE,       .asciz "yes")
  35         ELFNOTE(Xen, XEN_ELFNOTE_LOADER,         .asciz "generic")
  36         ELFNOTE(Xen, XEN_ELFNOTE_L1_MFN_VALID,
  37                 .quad _PAGE_PRESENT; .quad _PAGE_PRESENT)
  38         ELFNOTE(Xen, XEN_ELFNOTE_SUSPEND_CANCEL, .long 1)
  39         ELFNOTE(Xen, XEN_ELFNOTE_HV_START_LOW,   .long __HYPERVISOR_VIRT_START)
  40
  41 #endif /*CONFIG_XEN */