131 строка
3.9 KiB
ArmAsm
131 строка
3.9 KiB
ArmAsm
/* 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 <asm/xen/interface.h>
|
|
|
|
#ifdef CONFIG_XEN_PVH
|
|
#define PVH_FEATURES_STR "|writable_descriptor_tables|auto_translated_physmap|supervisor_mode_kernel"
|
|
/* Note the lack of 'hvm_callback_vector'. Older hypervisor will
|
|
* balk at this being part of XEN_ELFNOTE_FEATURES, so we put it in
|
|
* XEN_ELFNOTE_SUPPORTED_FEATURES which older hypervisors will ignore.
|
|
*/
|
|
#define PVH_FEATURES ((1 << XENFEAT_writable_page_tables) | \
|
|
(1 << XENFEAT_auto_translated_physmap) | \
|
|
(1 << XENFEAT_supervisor_mode_kernel) | \
|
|
(1 << XENFEAT_hvm_callback_vector))
|
|
/* The XENFEAT_writable_page_tables is not stricly neccessary as we set that
|
|
* up regardless whether this CONFIG option is enabled or not, but it
|
|
* clarifies what the right flags need to be.
|
|
*/
|
|
#else
|
|
#define PVH_FEATURES_STR ""
|
|
#define PVH_FEATURES (0)
|
|
#endif
|
|
|
|
__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
|
|
.balign PAGE_SIZE
|
|
ENTRY(hypercall_page)
|
|
#define NEXT_HYPERCALL(x) \
|
|
ENTRY(xen_hypercall_##x) \
|
|
.skip 32
|
|
|
|
NEXT_HYPERCALL(set_trap_table)
|
|
NEXT_HYPERCALL(mmu_update)
|
|
NEXT_HYPERCALL(set_gdt)
|
|
NEXT_HYPERCALL(stack_switch)
|
|
NEXT_HYPERCALL(set_callbacks)
|
|
NEXT_HYPERCALL(fpu_taskswitch)
|
|
NEXT_HYPERCALL(sched_op_compat)
|
|
NEXT_HYPERCALL(platform_op)
|
|
NEXT_HYPERCALL(set_debugreg)
|
|
NEXT_HYPERCALL(get_debugreg)
|
|
NEXT_HYPERCALL(update_descriptor)
|
|
NEXT_HYPERCALL(ni)
|
|
NEXT_HYPERCALL(memory_op)
|
|
NEXT_HYPERCALL(multicall)
|
|
NEXT_HYPERCALL(update_va_mapping)
|
|
NEXT_HYPERCALL(set_timer_op)
|
|
NEXT_HYPERCALL(event_channel_op_compat)
|
|
NEXT_HYPERCALL(xen_version)
|
|
NEXT_HYPERCALL(console_io)
|
|
NEXT_HYPERCALL(physdev_op_compat)
|
|
NEXT_HYPERCALL(grant_table_op)
|
|
NEXT_HYPERCALL(vm_assist)
|
|
NEXT_HYPERCALL(update_va_mapping_otherdomain)
|
|
NEXT_HYPERCALL(iret)
|
|
NEXT_HYPERCALL(vcpu_op)
|
|
NEXT_HYPERCALL(set_segment_base)
|
|
NEXT_HYPERCALL(mmuext_op)
|
|
NEXT_HYPERCALL(xsm_op)
|
|
NEXT_HYPERCALL(nmi_op)
|
|
NEXT_HYPERCALL(sched_op)
|
|
NEXT_HYPERCALL(callback_op)
|
|
NEXT_HYPERCALL(xenoprof_op)
|
|
NEXT_HYPERCALL(event_channel_op)
|
|
NEXT_HYPERCALL(physdev_op)
|
|
NEXT_HYPERCALL(hvm_op)
|
|
NEXT_HYPERCALL(sysctl)
|
|
NEXT_HYPERCALL(domctl)
|
|
NEXT_HYPERCALL(kexec_op)
|
|
NEXT_HYPERCALL(tmem_op) /* 38 */
|
|
ENTRY(xen_hypercall_rsvr)
|
|
.skip 320
|
|
NEXT_HYPERCALL(mca) /* 48 */
|
|
NEXT_HYPERCALL(arch_1)
|
|
NEXT_HYPERCALL(arch_2)
|
|
NEXT_HYPERCALL(arch_3)
|
|
NEXT_HYPERCALL(arch_4)
|
|
NEXT_HYPERCALL(arch_5)
|
|
NEXT_HYPERCALL(arch_6)
|
|
.balign 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, .ascii "!writable_page_tables|pae_pgdir_above_4gb"; .asciz PVH_FEATURES_STR)
|
|
ELFNOTE(Xen, XEN_ELFNOTE_SUPPORTED_FEATURES, .long (PVH_FEATURES) |
|
|
(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_HV_START_LOW, _ASM_PTR __HYPERVISOR_VIRT_START)
|
|
ELFNOTE(Xen, XEN_ELFNOTE_PADDR_OFFSET, _ASM_PTR 0)
|
|
|
|
#endif /*CONFIG_XEN */
|