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
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
From 2341c2d2cf2ee67b036d21aa9b12b71bea84495f Mon Sep 17 00:00:00 2001
From: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
Date: Fri, 27 Mar 2015 08:09:58 -0700
Subject: [PATCH 2/7] shim: add needed data structures
Upstream-Status: Inappropriate [embedded specific]
Add the needed data structures for shim to load, parse, relocate and
execute a binary. This includes file-parsing structures, an identifier for
the UEFI protocol for image verification under secure boot provided by shim.
Shim is thin loader developed by Matthew Garret
(https://github.com/rhinstaller/shim). This code was ported from such project.
Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
---
include/grub/efi/shim.h | 132 ++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 132 insertions(+)
create mode 100644 include/grub/efi/shim.h
diff --git a/include/grub/efi/shim.h b/include/grub/efi/shim.h
new file mode 100644
index 0000000..4b92a00
--- /dev/null
+++ b/include/grub/efi/shim.h
@@ -0,0 +1,132 @@
+/*
+ * shim.h - interface to shim: UEFI first-stage bootloader
+ *
+ * Copyright 2015 Intel Corporation.
+ *
+ * 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.
+ *
+ * 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 HOLDER 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.
+ *
+ * Significant portions of this code are derived from Red Hat shim: UEFI
+ * first-stage bootloader.
+ * (https://github.com/rhinstaller/shim) and are Copyright 2012 Red Hat, Inc
+ */
+
+#ifndef GRUB_SHIM_HEADER
+#define GRUB_SHIM_HEADER 1
+
+#include <grub/efi/pe32.h>
+
+struct grub_nt_headers32
+{
+ grub_efi_uint32_t signature;
+ struct grub_pe32_coff_header file_hdr;
+ struct grub_pe32_optional_header opt_hdr;
+};
+
+struct grub_nt_headers64
+{
+ grub_efi_uint32_t signature;
+ struct grub_pe32_coff_header file_hdr;
+ struct grub_pe64_optional_header opt_hdr;
+};
+
+struct grub_image_base_relocation
+{
+ grub_efi_uint32_t virtual_address;
+ grub_efi_uint32_t block_size;
+};
+
+struct grub_shim_pe_coff_loader_image_context {
+ grub_efi_uint64_t image_address;
+ grub_efi_uint64_t image_size;
+ grub_efi_uint64_t entry_point;
+ grub_efi_uintn_t header_size;
+ grub_efi_uint16_t image_type;
+ grub_efi_uint16_t num_sections;
+ struct grub_pe32_section_table *first_section;
+ struct grub_pe32_data_directory *reloc_dir;
+ struct grub_pe32_data_directory *sec_dir;
+ grub_efi_uint64_t number_of_rva_and_sizes;
+ union grub_shim_optional_header_union *pe_hdr;
+};
+
+struct grub_shim_lock
+{
+ grub_efi_status_t
+ (*verify) (void *buffer,
+ grub_uint32_t size);
+
+ grub_efi_status_t
+ (*hash) (grub_int8_t *data,
+ grub_int32_t datasize,
+ struct grub_shim_pe_coff_loader_image_context *context,
+ grub_uint8_t sha256hash,
+ grub_uint8_t sha1hash);
+
+ grub_efi_status_t
+ (*context) (void *data,
+ grub_uint32_t datasize,
+ struct grub_shim_pe_coff_loader_image_context *context);
+};
+
+union grub_shim_optional_header_union
+{
+ struct grub_nt_headers32 pe32;
+ struct grub_nt_headers64 pe32plus;
+ struct grub_te_header te;
+};
+
+#define GRUB_EFI_SHIM_PROTOCOL_GUID \
+ { 0x605dab50, 0xe046, 0x4300, \
+ { 0xab, 0xb6, 0x3d, 0xd8, 0x10, 0xdd, 0x8b, 0x23 } \
+ }
+
+#define SIGNATURE_16(A, B) ((A) | (B << 8))
+#define SIGNATURE_32(A, B, C, D) (SIGNATURE_16 (A, B) | (SIGNATURE_16 (C, D) << 16))
+
+#define EFI_IMAGE_DOS_SIGNATURE SIGNATURE_16('M', 'Z')
+#define EFI_IMAGE_NT_SIGNATURE SIGNATURE_32('P', 'E', '\0', '\0')
+
+#define EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC 5
+
+#define ALIGN_VALUE(Value, Alignment) ((Value) + (((Alignment) - (Value)) & ((Alignment) - 1)))
+#define ALIGN_POINTER(Pointer, Alignment) ((void *) (ALIGN_VALUE ((grub_efi_uintn_t)(Pointer), (Alignment))))
+
+/* Based relocation types. */
+
+#define EFI_IMAGE_REL_BASED_ABSOLUTE 0
+#define EFI_IMAGE_REL_BASED_HIGH 1
+#define EFI_IMAGE_REL_BASED_LOW 2
+#define EFI_IMAGE_REL_BASED_HIGHLOW 3
+#define EFI_IMAGE_REL_BASED_HIGHADJ 4
+#define EFI_IMAGE_REL_BASED_MIPS_JMPADDR 5
+#define EFI_IMAGE_REL_BASED_ARM_MOV32A 5
+#define EFI_IMAGE_REL_BASED_ARM_MOV32T 7
+#define EFI_IMAGE_REL_BASED_IA64_IMM64 9
+#define EFI_IMAGE_REL_BASED_MIPS_JMPADDR16 9
+#define EFI_IMAGE_REL_BASED_DIR64 10
+
+
+#endif /* ! GRUB_SHIM_HEADER */
--
1.9.1
|
