| 1 | #
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| 2 | # Copyright (c) 2006 Martin Decky
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| 3 | # All rights reserved.
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| 4 | #
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| 5 | # Redistribution and use in source and binary forms, with or without
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| 6 | # modification, are permitted provided that the following conditions
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| 7 | # are met:
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| 8 | #
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| 9 | # - Redistributions of source code must retain the above copyright
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| 10 | # notice, this list of conditions and the following disclaimer.
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| 11 | # - Redistributions in binary form must reproduce the above copyright
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| 12 | # notice, this list of conditions and the following disclaimer in the
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| 13 | # documentation and/or other materials provided with the distribution.
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| 14 | # - The name of the author may not be used to endorse or promote products
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| 15 | # derived from this software without specific prior written permission.
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| 16 | #
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| 17 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | #
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| 28 |
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| 29 | #include <arch/boot/boot.h>
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| 30 | #include <arch/mm/page.h>
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| 31 | #include <arch/pm.h>
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| 32 |
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| 33 | #define ELFNOTE(name, type, desctype, descval) \
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| 34 | .section .note.name; \
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| 35 | .align 4; \
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| 36 | .long 2f - 1f; \
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| 37 | .long 4f - 3f; \
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| 38 | .long type; \
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| 39 | 1:.asciz #name; \
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| 40 | 2:.align 4; \
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| 41 | 3:desctype descval; \
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| 42 | 4:.align 4
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| 43 |
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| 44 | ELFNOTE(Xen, XEN_ELFNOTE_GUEST_OS, .asciz, "HelenOS")
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| 45 | ELFNOTE(Xen, XEN_ELFNOTE_GUEST_VERSION, .asciz, RELEASE)
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| 46 | ELFNOTE(Xen, XEN_ELFNOTE_XEN_VERSION, .asciz, "xen-3.0")
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| 47 | ELFNOTE(Xen, XEN_ELFNOTE_VIRT_BASE, .long, PA2KA(BOOT_OFFSET))
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| 48 | ELFNOTE(Xen, XEN_ELFNOTE_PADDR_OFFSET, .long, 0)
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| 49 | ELFNOTE(Xen, XEN_ELFNOTE_ENTRY, .long, kernel_image_start)
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| 50 | ELFNOTE(Xen, XEN_ELFNOTE_HYPERCALL_PAGE, .long, hypercall_page)
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| 51 | ELFNOTE(Xen, XEN_ELFNOTE_FEATURES, .asciz, "auto_translated_physmap|supervisor_mode_kernel")
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| 52 | ELFNOTE(Xen, XEN_ELFNOTE_PAE_MODE, .asciz, "no")
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| 53 | ELFNOTE(Xen, XEN_ELFNOTE_LOADER, .asciz, "generic")
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| 54 |
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| 55 | .text
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| 56 |
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| 57 | .code32
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| 58 | .align 4
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| 59 | .global kernel_image_start
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| 60 |
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| 61 | kernel_image_start:
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| 62 | # copy start_info (esi initialized by Xen)
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| 63 |
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| 64 | movl $start_info, %edi
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| 65 | movl $START_INFO_SIZE >> 2, %ecx
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| 66 | cld
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| 67 | rep movsb
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| 68 |
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| 69 | # switch to temporal kernel stack
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| 70 |
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| 71 | movl $kernel_stack, %esp
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| 72 |
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| 73 | call arch_pre_main
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| 74 | call main_bsp # never returns
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| 75 |
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| 76 | cli
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| 77 | hlt
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| 78 |
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| 79 | kernel_stack_bottom:
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| 80 | .space TEMP_STACK_SIZE
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| 81 | kernel_stack:
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| 82 |
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| 83 | .section K_TEXT_START, "aw", @progbits
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| 84 | .global hypercall_page
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| 85 | .org 0
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| 86 | hypercall_page:
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| 87 | .space PAGE_SIZE
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| 88 |
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| 89 | .global shared_info
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| 90 | .org 0x1000
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| 91 | shared_info:
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| 92 | .space PAGE_SIZE
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| 93 |
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| 94 | .global console_page
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| 95 | .org 0x2000
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| 96 | console_page:
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| 97 | .space PAGE_SIZE
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| 98 |
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| 99 | # Xen 3.0.3 ELF loader is somehow buggy
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| 100 | # thus this workaround
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| 101 | .global dummy_fill
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| 102 | dummy_fill:
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| 103 | .space (1024 * 1024)
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