1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _PPC_BOOT_ELF_H_
3 #define _PPC_BOOT_ELF_H_
4
5 /* 32-bit ELF base types. */
6 typedef unsigned int Elf32_Addr;
7 typedef unsigned short Elf32_Half;
8 typedef unsigned int Elf32_Off;
9 typedef signed int Elf32_Sword;
10 typedef unsigned int Elf32_Word;
11
12 /* 64-bit ELF base types. */
13 typedef unsigned long long Elf64_Addr;
14 typedef unsigned short Elf64_Half;
15 typedef signed short Elf64_SHalf;
16 typedef unsigned long long Elf64_Off;
17 typedef signed int Elf64_Sword;
18 typedef unsigned int Elf64_Word;
19 typedef unsigned long long Elf64_Xword;
20 typedef signed long long Elf64_Sxword;
21
22 /* These constants are for the segment types stored in the image headers */
23 #define PT_NULL 0
24 #define PT_LOAD 1
25 #define PT_DYNAMIC 2
26 #define PT_INTERP 3
27 #define PT_NOTE 4
28 #define PT_SHLIB 5
29 #define PT_PHDR 6
30 #define PT_TLS 7 /* Thread local storage segment */
31 #define PT_LOOS 0x60000000 /* OS-specific */
32 #define PT_HIOS 0x6fffffff /* OS-specific */
33 #define PT_LOPROC 0x70000000
34 #define PT_HIPROC 0x7fffffff
35 #define PT_GNU_EH_FRAME 0x6474e550
36
37 #define PT_GNU_STACK (PT_LOOS + 0x474e551)
38
39 /* These constants define the different elf file types */
40 #define ET_NONE 0
41 #define ET_REL 1
42 #define ET_EXEC 2
43 #define ET_DYN 3
44 #define ET_CORE 4
45 #define ET_LOPROC 0xff00
46 #define ET_HIPROC 0xffff
47
48 /* These constants define the various ELF target machines */
49 #define EM_NONE 0
50 #define EM_PPC 20 /* PowerPC */
51 #define EM_PPC64 21 /* PowerPC64 */
52
53 #define EI_NIDENT 16
54
55 typedef struct elf32_hdr {
56 unsigned char e_ident[EI_NIDENT];
57 Elf32_Half e_type;
58 Elf32_Half e_machine;
59 Elf32_Word e_version;
60 Elf32_Addr e_entry; /* Entry point */
61 Elf32_Off e_phoff;
62 Elf32_Off e_shoff;
63 Elf32_Word e_flags;
64 Elf32_Half e_ehsize;
65 Elf32_Half e_phentsize;
66 Elf32_Half e_phnum;
67 Elf32_Half e_shentsize;
68 Elf32_Half e_shnum;
69 Elf32_Half e_shstrndx;
70 } Elf32_Ehdr;
71
72 typedef struct elf64_hdr {
73 unsigned char e_ident[16]; /* ELF "magic number" */
74 Elf64_Half e_type;
75 Elf64_Half e_machine;
76 Elf64_Word e_version;
77 Elf64_Addr e_entry; /* Entry point virtual address */
78 Elf64_Off e_phoff; /* Program header table file offset */
79 Elf64_Off e_shoff; /* Section header table file offset */
80 Elf64_Word e_flags;
81 Elf64_Half e_ehsize;
82 Elf64_Half e_phentsize;
83 Elf64_Half e_phnum;
84 Elf64_Half e_shentsize;
85 Elf64_Half e_shnum;
86 Elf64_Half e_shstrndx;
87 } Elf64_Ehdr;
88
89 /* These constants define the permissions on sections in the program
90 header, p_flags. */
91 #define PF_R 0x4
92 #define PF_W 0x2
93 #define PF_X 0x1
94
95 typedef struct elf32_phdr {
96 Elf32_Word p_type;
97 Elf32_Off p_offset;
98 Elf32_Addr p_vaddr;
99 Elf32_Addr p_paddr;
100 Elf32_Word p_filesz;
101 Elf32_Word p_memsz;
102 Elf32_Word p_flags;
103 Elf32_Word p_align;
104 } Elf32_Phdr;
105
106 typedef struct elf64_phdr {
107 Elf64_Word p_type;
108 Elf64_Word p_flags;
109 Elf64_Off p_offset; /* Segment file offset */
110 Elf64_Addr p_vaddr; /* Segment virtual address */
111 Elf64_Addr p_paddr; /* Segment physical address */
112 Elf64_Xword p_filesz; /* Segment size in file */
113 Elf64_Xword p_memsz; /* Segment size in memory */
114 Elf64_Xword p_align; /* Segment alignment, file & memory */
115 } Elf64_Phdr;
116
117 #define EI_MAG0 0 /* e_ident[] indexes */
118 #define EI_MAG1 1
119 #define EI_MAG2 2
120 #define EI_MAG3 3
121 #define EI_CLASS 4
122 #define EI_DATA 5
123 #define EI_VERSION 6
124 #define EI_OSABI 7
125 #define EI_PAD 8
126
127 #define ELFMAG0 0x7f /* EI_MAG */
128 #define ELFMAG1 'E'
129 #define ELFMAG2 'L'
130 #define ELFMAG3 'F'
131 #define ELFMAG "\177ELF"
132 #define SELFMAG 4
133
134 #define ELFCLASSNONE 0 /* EI_CLASS */
135 #define ELFCLASS32 1
136 #define ELFCLASS64 2
137 #define ELFCLASSNUM 3
138
139 #define ELFDATANONE 0 /* e_ident[EI_DATA] */
140 #define ELFDATA2LSB 1
141 #define ELFDATA2MSB 2
142
143 #define EV_NONE 0 /* e_version, EI_VERSION */
144 #define EV_CURRENT 1
145 #define EV_NUM 2
146
147 #define ELFOSABI_NONE 0
148 #define ELFOSABI_LINUX 3
149
150 struct elf_info {
151 unsigned long loadsize;
152 unsigned long memsize;
153 unsigned long elfoffset;
154 };
155 int parse_elf64(void *hdr, struct elf_info *info);
156 int parse_elf32(void *hdr, struct elf_info *info);
157
158 #endif /* _PPC_BOOT_ELF_H_ */
159
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