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/*
* Support routines for Xen
*
* Copyright (C) 2005 Dan Magenheimer <dan.magenheimer@hp.com>
*/
#include <asm/processor.h>
#include <asm/asmmacro.h>
#include <asm/pgtable.h>
#include <asm/system.h>
#include <asm/paravirt.h>
#include <asm/xen/privop.h>
#include <linux/elfnote.h>
#include <linux/init.h>
#include <xen/interface/elfnote.h>
.section .data.read_mostly
.align 8
.global xen_domain_type
xen_domain_type:
data4 XEN_NATIVE_ASM
.previous
__INIT
ENTRY(startup_xen)
// Calculate load offset.
// The constant, LOAD_OFFSET, can't be used because the boot
// loader doesn't always load to the LMA specified by the vmlinux.lds.
mov r9=ip // must be the first instruction to make sure
// that r9 = the physical address of startup_xen.
// Usually r9 = startup_xen - LOAD_OFFSET
movl r8=startup_xen
;;
sub r9=r9,r8 // Usually r9 = -LOAD_OFFSET.
mov r10=PARAVIRT_HYPERVISOR_TYPE_XEN
movl r11=_start
;;
add r11=r11,r9
movl r8=hypervisor_type
;;
add r8=r8,r9
mov b0=r11
;;
st8 [r8]=r10
br.cond.sptk.many b0
;;
END(startup_xen)
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")
ELFNOTE(Xen, XEN_ELFNOTE_ENTRY, data8.ua startup_xen - LOAD_OFFSET)
#define isBP p3 // are we the Bootstrap Processor?
GLOBAL_ENTRY(xen_setup_hook)
mov r8=XEN_PV_DOMAIN_ASM
(isBP) movl r9=xen_domain_type;;
(isBP) st4 [r9]=r8
movl r10=xen_ivt;;
mov cr.iva=r10
/* Set xsi base. */
#define FW_HYPERCALL_SET_SHARED_INFO_VA 0x600
(isBP) mov r2=FW_HYPERCALL_SET_SHARED_INFO_VA
(isBP) movl r28=XSI_BASE;;
(isBP) break 0x1000;;
/* setup pv_ops */
(isBP) mov r4=rp
;;
(isBP) br.call.sptk.many rp=xen_setup_pv_ops
;;
(isBP) mov rp=r4
;;
br.ret.sptk.many rp
;;
END(xen_setup_hook)
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