LXR linux/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
   9#include <asm/boot.h>
  10#include <asm/asm.h>
  11#include <asm/page_types.h>
  12
  13#include <xen/interface/elfnote.h>
  14#include <asm/xen/interface.h>
  15
  16        __INIT
  17ENTRY(startup_xen)
  18        cld
  19#ifdef CONFIG_X86_32
  20        mov %esi,xen_start_info
  21        mov $init_thread_union+THREAD_SIZE,%esp
  22#else
  23        mov %rsi,xen_start_info
  24        mov $init_thread_union+THREAD_SIZE,%rsp
  25#endif
  26        jmp xen_start_kernel
  27
  28        __FINIT
  29
  30.pushsection .text
  31        .align PAGE_SIZE_asm
  32ENTRY(hypercall_page)
  33        .skip PAGE_SIZE_asm
  34.popsection
  35
  36        ELFNOTE(Xen, XEN_ELFNOTE_GUEST_OS,       .asciz "linux")
  37        ELFNOTE(Xen, XEN_ELFNOTE_GUEST_VERSION,  .asciz "2.6")
  38        ELFNOTE(Xen, XEN_ELFNOTE_XEN_VERSION,    .asciz "xen-3.0")
  39#ifdef CONFIG_X86_32
  40        ELFNOTE(Xen, XEN_ELFNOTE_VIRT_BASE,      _ASM_PTR __PAGE_OFFSET)
  41#else
  42        ELFNOTE(Xen, XEN_ELFNOTE_VIRT_BASE,      _ASM_PTR __START_KERNEL_map)
  43#endif
  44        ELFNOTE(Xen, XEN_ELFNOTE_ENTRY,          _ASM_PTR startup_xen)
  45        ELFNOTE(Xen, XEN_ELFNOTE_HYPERCALL_PAGE, _ASM_PTR hypercall_page)
  46        ELFNOTE(Xen, XEN_ELFNOTE_FEATURES,       .asciz "!writable_page_tables|pae_pgdir_above_4gb")
  47        ELFNOTE(Xen, XEN_ELFNOTE_PAE_MODE,       .asciz "yes")
  48        ELFNOTE(Xen, XEN_ELFNOTE_LOADER,         .asciz "generic")
  49        ELFNOTE(Xen, XEN_ELFNOTE_L1_MFN_VALID,
  50                .quad _PAGE_PRESENT; .quad _PAGE_PRESENT)
  51        ELFNOTE(Xen, XEN_ELFNOTE_SUSPEND_CANCEL, .long 1)
  52        ELFNOTE(Xen, XEN_ELFNOTE_HV_START_LOW,   _ASM_PTR __HYPERVISOR_VIRT_START)
  53        ELFNOTE(Xen, XEN_ELFNOTE_PADDR_OFFSET,   _ASM_PTR 0)
  54
  55#endif /*CONFIG_XEN */
  56