Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Copyright (C) Paul Mackerras 1997.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Updates for PPC64 by Todd Inglett, Dave Engebretsen & Peter Bergner.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <stdarg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <stddef.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include "elf.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include "page.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include "string.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include "stdio.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) int parse_elf64(void *hdr, struct elf_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	Elf64_Ehdr *elf64 = hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	Elf64_Phdr *elf64ph;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	if (!(elf64->e_ident[EI_MAG0]  == ELFMAG0	&&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	      elf64->e_ident[EI_MAG1]  == ELFMAG1	&&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	      elf64->e_ident[EI_MAG2]  == ELFMAG2	&&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	      elf64->e_ident[EI_MAG3]  == ELFMAG3	&&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	      elf64->e_ident[EI_CLASS] == ELFCLASS64	&&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #ifdef __LITTLE_ENDIAN__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	      elf64->e_ident[EI_DATA]  == ELFDATA2LSB	&&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	      elf64->e_ident[EI_DATA]  == ELFDATA2MSB	&&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	      (elf64->e_type            == ET_EXEC ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	       elf64->e_type            == ET_DYN)	&&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	      elf64->e_machine         == EM_PPC64))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	elf64ph = (Elf64_Phdr *)((unsigned long)elf64 +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 				 (unsigned long)elf64->e_phoff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	for (i = 0; i < (unsigned int)elf64->e_phnum; i++, elf64ph++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 		if (elf64ph->p_type == PT_LOAD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	if (i >= (unsigned int)elf64->e_phnum)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	info->loadsize = (unsigned long)elf64ph->p_filesz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	info->memsize = (unsigned long)elf64ph->p_memsz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	info->elfoffset = (unsigned long)elf64ph->p_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) int parse_elf32(void *hdr, struct elf_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	Elf32_Ehdr *elf32 = hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	Elf32_Phdr *elf32ph;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	if (!(elf32->e_ident[EI_MAG0]  == ELFMAG0	&&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 	      elf32->e_ident[EI_MAG1]  == ELFMAG1	&&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	      elf32->e_ident[EI_MAG2]  == ELFMAG2	&&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	      elf32->e_ident[EI_MAG3]  == ELFMAG3	&&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	      elf32->e_ident[EI_CLASS] == ELFCLASS32	&&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 	      elf32->e_ident[EI_DATA]  == ELFDATA2MSB	&&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 	      (elf32->e_type            == ET_EXEC ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 	       elf32->e_type            == ET_DYN)      &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 	      elf32->e_machine         == EM_PPC))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 	elf32ph = (Elf32_Phdr *) ((unsigned long)elf32 + elf32->e_phoff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 	for (i = 0; i < elf32->e_phnum; i++, elf32ph++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 		if (elf32ph->p_type == PT_LOAD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 	if (i >= elf32->e_phnum)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 	info->loadsize = elf32ph->p_filesz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 	info->memsize = elf32ph->p_memsz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 	info->elfoffset = elf32ph->p_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 	return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }