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#

# Copyright (c) 2006 Martin Decky

# All rights reserved.

#

# Redistribution and use in source and binary forms, with or without

# modification, are permitted provided that the following conditions

# are met:

#

# - Redistributions of source code must retain the above copyright

#   notice, this list of conditions and the following disclaimer.

# - Redistributions in binary form must reproduce the above copyright

#   notice, this list of conditions and the following disclaimer in the

#   documentation and/or other materials provided with the distribution.

# - The name of the author may not be used to endorse or promote products

#   derived from this software without specific prior written permission.

#

# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.

# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,

# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#

#include <arch/boot/boot.h>

#include <arch/mm/page.h>

#include <arch/pm.h>

#define ELFNOTE(name, type, desctype, descval) \

	.section .note.name; \

	.align 4; \

	.long 2f - 1f; \

	.long 4f - 3f; \

	.long type; \

	1:.asciz #name; \

	2:.align 4; \

	3:desctype descval; \

	4:.align 4

ELFNOTE(Xen, XEN_ELFNOTE_GUEST_OS,			.asciz,	"HelenOS")

ELFNOTE(Xen, XEN_ELFNOTE_GUEST_VERSION,		.asciz,	RELEASE)

ELFNOTE(Xen, XEN_ELFNOTE_XEN_VERSION,		.asciz,	"xen-3.0")

ELFNOTE(Xen, XEN_ELFNOTE_VIRT_BASE,			.long,	PA2KA(BOOT_OFFSET))

ELFNOTE(Xen, XEN_ELFNOTE_PADDR_OFFSET,		.long,	0)

ELFNOTE(Xen, XEN_ELFNOTE_ENTRY,				.long,	kernel_image_start)

ELFNOTE(Xen, XEN_ELFNOTE_HYPERCALL_PAGE,	.long,	hypercall_page)

ELFNOTE(Xen, XEN_ELFNOTE_FEATURES,			.asciz,	"auto_translated_physmap|supervisor_mode_kernel")

ELFNOTE(Xen, XEN_ELFNOTE_PAE_MODE,			.asciz,	"no")

ELFNOTE(Xen, XEN_ELFNOTE_LOADER,			.asciz,	"generic")

.text

.code32

.align 4

.global kernel_image_start

kernel_image_start:

	# copy start_info (esi initialized by Xen)

	movl $start_info, %edi

	movl $START_INFO_SIZE >> 2, %ecx

	cld

	rep movsb

	# switch to temporal kernel stack

	movl $kernel_stack, %esp

	call arch_pre_main

	call main_bsp								# never returns

	cli

	hlt

kernel_stack_bottom:

	.space TEMP_STACK_SIZE

kernel_stack:

.section K_TEXT_START, "aw", @progbits

.global hypercall_page

.org 0

hypercall_page:

	.space PAGE_SIZE

.global shared_info

.org 0x1000

shared_info:

	.space PAGE_SIZE

.global console_page

.org 0x2000

console_page:

	.space PAGE_SIZE

# Xen 3.0.3 ELF loader is somehow buggy

# thus this workaround

.global dummy_fill

dummy_fill:

	.space (1024 * 1024)