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