aboutsummaryrefslogblamecommitdiffstats
path: root/arch/x86/xen/xen-head.S
blob: aaa7291c9259f55c0fc5ac0aab5f09ff788511a0 (plain) (tree)
1
2
3
4
5
6
7
8
9





                                                                      
                       
 
                     
                    
                           
 
                                  
                              
 
              
                  
           






                                               
                            

               
 
                  
                        
                     
                       




                                                                  
                    
                                                                        


                                                                             

                                                                         
                                                                                                    
                                                              
                                                                  


                                                         
                                                                                  
                                                            

                      
/* 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 <linux/init.h>

#include <asm/boot.h>
#include <asm/asm.h>
#include <asm/page_types.h>

#include <xen/interface/elfnote.h>
#include <asm/xen/interface.h>

	__INIT
ENTRY(startup_xen)
	cld
#ifdef CONFIG_X86_32
	mov %esi,xen_start_info
	mov $init_thread_union+THREAD_SIZE,%esp
#else
	mov %rsi,xen_start_info
	mov $init_thread_union+THREAD_SIZE,%rsp
#endif
	jmp xen_start_kernel

	__FINIT

.pushsection .text
	.align PAGE_SIZE
ENTRY(hypercall_page)
	.skip PAGE_SIZE
.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")
#ifdef CONFIG_X86_32
	ELFNOTE(Xen, XEN_ELFNOTE_VIRT_BASE,      _ASM_PTR __PAGE_OFFSET)
#else
	ELFNOTE(Xen, XEN_ELFNOTE_VIRT_BASE,      _ASM_PTR __START_KERNEL_map)
#endif
	ELFNOTE(Xen, XEN_ELFNOTE_ENTRY,          _ASM_PTR startup_xen)
	ELFNOTE(Xen, XEN_ELFNOTE_HYPERCALL_PAGE, _ASM_PTR hypercall_page)
	ELFNOTE(Xen, XEN_ELFNOTE_FEATURES,       .asciz "!writable_page_tables|pae_pgdir_above_4gb")
	ELFNOTE(Xen, XEN_ELFNOTE_PAE_MODE,       .asciz "yes")
	ELFNOTE(Xen, XEN_ELFNOTE_LOADER,         .asciz "generic")
	ELFNOTE(Xen, XEN_ELFNOTE_L1_MFN_VALID,
		.quad _PAGE_PRESENT; .quad _PAGE_PRESENT)
	ELFNOTE(Xen, XEN_ELFNOTE_SUSPEND_CANCEL, .long 1)
	ELFNOTE(Xen, XEN_ELFNOTE_HV_START_LOW,   _ASM_PTR __HYPERVISOR_VIRT_START)
	ELFNOTE(Xen, XEN_ELFNOTE_PADDR_OFFSET,   _ASM_PTR 0)

#endif /*CONFIG_XEN */