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- /* 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 <xen/interface/features.h>
- #include <xen/interface/xen.h>
- #include <xen/interface/xen-mca.h>
- #include <asm/xen/interface.h>
- #ifdef CONFIG_XEN_PV
- __INIT
- ENTRY(startup_xen)
- cld
- /* Clear .bss */
- xor %eax,%eax
- mov $__bss_start, %_ASM_DI
- mov $__bss_stop, %_ASM_CX
- sub %_ASM_DI, %_ASM_CX
- shr $__ASM_SEL(2, 3), %_ASM_CX
- rep __ASM_SIZE(stos)
- mov %_ASM_SI, xen_start_info
- mov $init_thread_union+THREAD_SIZE, %_ASM_SP
- jmp xen_start_kernel
- __FINIT
- #endif
- .pushsection .text
- .balign PAGE_SIZE
- ENTRY(hypercall_page)
- .skip PAGE_SIZE
- #define HYPERCALL(n) \
- .equ xen_hypercall_##n, hypercall_page + __HYPERVISOR_##n * 32; \
- .type xen_hypercall_##n, @function; .size xen_hypercall_##n, 32
- #include <asm/xen-hypercalls.h>
- #undef HYPERCALL
- .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)
- /* Map the p2m table to a 512GB-aligned user address. */
- ELFNOTE(Xen, XEN_ELFNOTE_INIT_P2M, .quad PGDIR_SIZE)
- #endif
- #ifdef CONFIG_XEN_PV
- ELFNOTE(Xen, XEN_ELFNOTE_ENTRY, _ASM_PTR startup_xen)
- #endif
- ELFNOTE(Xen, XEN_ELFNOTE_HYPERCALL_PAGE, _ASM_PTR hypercall_page)
- ELFNOTE(Xen, XEN_ELFNOTE_FEATURES,
- .ascii "!writable_page_tables|pae_pgdir_above_4gb")
- ELFNOTE(Xen, XEN_ELFNOTE_SUPPORTED_FEATURES,
- .long (1 << XENFEAT_writable_page_tables) | (1 << XENFEAT_dom0))
- 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_MOD_START_PFN, .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 */
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