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
  17 ENTRY(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         .balign PAGE_SIZE
  32 ENTRY(hypercall_page)
  33 #define NEXT_HYPERCALL(x) \
  34         ENTRY(xen_hypercall_##x) \
  35         .skip 32
  36
  37 NEXT_HYPERCALL(set_trap_table)
  38 NEXT_HYPERCALL(mmu_update)
  39 NEXT_HYPERCALL(set_gdt)
  40 NEXT_HYPERCALL(stack_switch)
  41 NEXT_HYPERCALL(set_callbacks)
  42 NEXT_HYPERCALL(fpu_taskswitch)
  43 NEXT_HYPERCALL(sched_op_compat)
  44 NEXT_HYPERCALL(platform_op)
  45 NEXT_HYPERCALL(set_debugreg)
  46 NEXT_HYPERCALL(get_debugreg)
  47 NEXT_HYPERCALL(update_descriptor)
  48 NEXT_HYPERCALL(ni)
  49 NEXT_HYPERCALL(memory_op)
  50 NEXT_HYPERCALL(multicall)
  51 NEXT_HYPERCALL(update_va_mapping)
  52 NEXT_HYPERCALL(set_timer_op)
  53 NEXT_HYPERCALL(event_channel_op_compat)
  54 NEXT_HYPERCALL(xen_version)
  55 NEXT_HYPERCALL(console_io)
  56 NEXT_HYPERCALL(physdev_op_compat)
  57 NEXT_HYPERCALL(grant_table_op)
  58 NEXT_HYPERCALL(vm_assist)
  59 NEXT_HYPERCALL(update_va_mapping_otherdomain)
  60 NEXT_HYPERCALL(iret)
  61 NEXT_HYPERCALL(vcpu_op)
  62 NEXT_HYPERCALL(set_segment_base)
  63 NEXT_HYPERCALL(mmuext_op)
  64 NEXT_HYPERCALL(xsm_op)
  65 NEXT_HYPERCALL(nmi_op)
  66 NEXT_HYPERCALL(sched_op)
  67 NEXT_HYPERCALL(callback_op)
  68 NEXT_HYPERCALL(xenoprof_op)
  69 NEXT_HYPERCALL(event_channel_op)
  70 NEXT_HYPERCALL(physdev_op)
  71 NEXT_HYPERCALL(hvm_op)
  72 NEXT_HYPERCALL(sysctl)
  73 NEXT_HYPERCALL(domctl)
  74 NEXT_HYPERCALL(kexec_op)
  75 NEXT_HYPERCALL(tmem_op) /* 38 */
  76 ENTRY(xen_hypercall_rsvr)
  77         .skip 320
  78 NEXT_HYPERCALL(mca) /* 48 */
  79 NEXT_HYPERCALL(arch_1)
  80 NEXT_HYPERCALL(arch_2)
  81 NEXT_HYPERCALL(arch_3)
  82 NEXT_HYPERCALL(arch_4)
  83 NEXT_HYPERCALL(arch_5)
  84 NEXT_HYPERCALL(arch_6)
  85         .balign PAGE_SIZE
  86 .popsection
  87
  88         ELFNOTE(Xen, XEN_ELFNOTE_GUEST_OS,       .asciz "linux")
  89         ELFNOTE(Xen, XEN_ELFNOTE_GUEST_VERSION,  .asciz "2.6")
  90         ELFNOTE(Xen, XEN_ELFNOTE_XEN_VERSION,    .asciz "xen-3.0")
  91 #ifdef CONFIG_X86_32
  92         ELFNOTE(Xen, XEN_ELFNOTE_VIRT_BASE,      _ASM_PTR __PAGE_OFFSET)
  93 #else
  94         ELFNOTE(Xen, XEN_ELFNOTE_VIRT_BASE,      _ASM_PTR __START_KERNEL_map)
  95 #endif
  96         ELFNOTE(Xen, XEN_ELFNOTE_ENTRY,          _ASM_PTR startup_xen)
  97         ELFNOTE(Xen, XEN_ELFNOTE_HYPERCALL_PAGE, _ASM_PTR hypercall_page)
  98         ELFNOTE(Xen, XEN_ELFNOTE_FEATURES,       .asciz "!writable_page_tables|pae_pgdir_above_4gb")
  99         ELFNOTE(Xen, XEN_ELFNOTE_PAE_MODE,       .asciz "yes")
 100         ELFNOTE(Xen, XEN_ELFNOTE_LOADER,         .asciz "generic")
 101         ELFNOTE(Xen, XEN_ELFNOTE_L1_MFN_VALID,
 102                 .quad _PAGE_PRESENT; .quad _PAGE_PRESENT)
 103         ELFNOTE(Xen, XEN_ELFNOTE_SUSPEND_CANCEL, .long 1)
 104         ELFNOTE(Xen, XEN_ELFNOTE_HV_START_LOW,   _ASM_PTR __HYPERVISOR_VIRT_START)
 105         ELFNOTE(Xen, XEN_ELFNOTE_PADDR_OFFSET,   _ASM_PTR 0)
 106
 107 #endif /*CONFIG_XEN */