1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
/*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (C) 2023 Karel Gardas
* Copyright (C) 2018 embedded brains GmbH & Co. KG
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR CONTRIBUTORS 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 <bspopts.h>
#ifdef BSP_MULTIBOOT_SUPPORT
#include <multiboot2.h>
#endif
.text
.section .text._start,"ax",@progbits
.p2align 4,,15
.globl _start
.type _start, @function
_start:
.cfi_startproc
movabsq $_ISR_Stack_area_end, %rsp
subq $8, %rsp
.cfi_def_cfa_offset 16
xorl %edi, %edi
#ifdef BSP_MULTIBOOT_SUPPORT
mov %eax, _multiboot2_magic
mov %rbx, _multiboot2_info_ptr
#endif
movabsq $boot_card, %rax
call *%rax
.cfi_endproc
#ifdef BSP_MULTIBOOT_SUPPORT
multiboot2:
ret
_multiboot2_start:
jmp _start
.text
.section .multiboot2_header
.p2align 4,,15
multiboot2_header_start:
.long MULTIBOOT2_HEADER_MAGIC
.long MULTIBOOT_ARCHITECTURE_I386
.long multiboot2_header_end - multiboot2_header_start
.long -(MULTIBOOT2_HEADER_MAGIC + MULTIBOOT_ARCHITECTURE_I386 + (multiboot2_header_end - multiboot2_header_start))
efi_bootservices_start:
.short MULTIBOOT_HEADER_TAG_EFI_BS
.short 0
.long efi_bootservices_end - efi_bootservices_start
efi_bootservices_end:
efi64_entry_start:
.short MULTIBOOT_HEADER_TAG_ENTRY_ADDRESS_EFI64
.short 0
.long efi64_entry_end - efi64_entry_start
.long _start /* directly copied from resulting ELF */
/* padding to 8 byte tags allignment */
.long 0
efi64_entry_end:
info_requests_start:
.short MULTIBOOT_HEADER_TAG_INFORMATION_REQUEST
.short 0
.long info_requests_end - info_requests_start
.long MULTIBOOT_TAG_TYPE_EFI64
.long MULTIBOOT_TAG_TYPE_CMDLINE
#ifdef BSP_USE_EFI_BOOT_SERVICES
.long MULTIBOOT_TAG_TYPE_EFI_BS
#else
.long 0
#endif
/* padding to 8 byte tags allignment */
.long 0
info_requests_end:
/* header end*/
.short MULTIBOOT_HEADER_TAG_END
.short 0
.long 8
multiboot2_header_end:
.data
.global _multiboot2_magic
_multiboot2_magic:
.long 0
.data
.global _multiboot2_info_ptr
_multiboot2_info_ptr:
.quad 0
#endif
|
