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1805 decky 1
#
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# Copyright (c) 2006 Martin Decky
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# - Redistributions of source code must retain the above copyright
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#   notice, this list of conditions and the following disclaimer.
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# - Redistributions in binary form must reproduce the above copyright
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#   notice, this list of conditions and the following disclaimer in the
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#   documentation and/or other materials provided with the distribution.
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# - The name of the author may not be used to endorse or promote products
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#   derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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#include <arch/mm/page.h>
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#include <arch/hypercall.h>
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#define ELFNOTE(name, type, desctype, descval) \
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	.section .note.name; \
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	.align 4; \
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	.long 2f - 1f; \
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	.long 4f - 3f; \
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	.long type; \
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	1:.asciz #name; \
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	2:.align 4; \
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	3:desctype descval; \
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	4:.align 4
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ELFNOTE(Xen, XEN_ELFNOTE_GUEST_OS,			.asciz,	"HelenOS")
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ELFNOTE(Xen, XEN_ELFNOTE_GUEST_VERSION,		.asciz,	RELEASE)
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ELFNOTE(Xen, XEN_ELFNOTE_XEN_VERSION,		.asciz,	"xen-3.0")
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ELFNOTE(Xen, XEN_ELFNOTE_VIRT_BASE,			.long,	PA2KA(BOOT_OFFSET))
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ELFNOTE(Xen, XEN_ELFNOTE_PADDR_OFFSET,		.long,	0)
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ELFNOTE(Xen, XEN_ELFNOTE_ENTRY,				.long,	kernel_image_start)
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ELFNOTE(Xen, XEN_ELFNOTE_HYPERCALL_PAGE,	.long,	hypercall_page)
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ELFNOTE(Xen, XEN_ELFNOTE_FEATURES,			.asciz,	"auto_translated_physmap|supervisor_mode_kernel")
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ELFNOTE(Xen, XEN_ELFNOTE_PAE_MODE,			.asciz,	"no")
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ELFNOTE(Xen, XEN_ELFNOTE_LOADER,			.asciz,	"generic")
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.text
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.code32
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.align 4
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.global kernel_image_start
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kernel_image_start:
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	# copy start_info (esi initialized by Xen)
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	movl $start_info, %edi
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	movl $START_INFO_SIZE >> 2, %ecx
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	cld
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	rep movsb
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	# switch to temporal kernel stack
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	movl $kernel_stack, %esp
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	call arch_pre_main
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	call main_bsp								# never returns
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	cli
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	hlt
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kernel_stack_bottom:
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	.space TEMP_STACK_SIZE
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kernel_stack:
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.section K_TEXT_START, "aw", @progbits
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.global hypercall_page
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.org 0
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hypercall_page:
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	.space PAGE_SIZE
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.global shared_info
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.org 0x1000
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shared_info:
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	.space PAGE_SIZE
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.global console_page
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.org 0x2000
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console_page:
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	.space PAGE_SIZE
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# Xen 3.0.3 ELF loader is somehow buggy
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# thus this workaround
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.global dummy_fill
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dummy_fill:
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	.space (1024 * 1024)