700 lines
21 KiB
C
700 lines
21 KiB
C
#include "elf.h"
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#ifndef ELF_CHECK_ARCH
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#error ELF_CHECK_ARCH not defined
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#endif
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#define ELF_NOTES 1
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#define ELF_DEBUG 0
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struct elf_state
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{
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union {
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Elf32_Ehdr elf32;
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Elf64_Ehdr elf64;
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} e;
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union {
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Elf32_Phdr phdr32[1];
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Elf64_Phdr phdr64[1];
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unsigned char dummy[1024];
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} p;
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unsigned long curaddr;
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int segment; /* current segment number, -1 for none */
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uint64_t loc; /* start offset of current block */
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uint64_t skip; /* padding to be skipped to current segment */
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unsigned long toread; /* remaining data to be read in the segment */
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#if ELF_NOTES
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int check_ip_checksum;
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uint16_t ip_checksum;
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unsigned long ip_checksum_offset;
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#endif
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};
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static struct elf_state estate;
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static unsigned long find_segment(unsigned long size, unsigned long align)
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{
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unsigned i;
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/* Verify I have a power of 2 alignment */
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if (align & (align - 1)) {
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return ULONG_MAX;
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}
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for(i = 0; i < meminfo.map_count; i++) {
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unsigned long r_start, r_end;
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if (meminfo.map[i].type != E820_RAM)
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continue;
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if ((meminfo.map[i].addr + meminfo.map[i].size) > ULONG_MAX) {
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continue;
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}
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r_start = meminfo.map[i].addr;
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r_end = r_start + meminfo.map[i].size;
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/* Don't allow the segment to overlap etherboot */
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if ((r_end > virt_to_phys(_text)) && (r_start < virt_to_phys(_text))) {
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r_end = virt_to_phys(_text);
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}
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if ((r_start > virt_to_phys(_text)) && (r_start < virt_to_phys(_end))) {
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r_start = virt_to_phys(_end);
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}
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/* Don't allow the segment to overlap the heap */
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if ((r_end > heap_ptr) && (r_start < heap_ptr)) {
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r_end = heap_ptr;
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}
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if ((r_start > heap_ptr) && (r_start < heap_bot)) {
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r_start = heap_ptr;
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}
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r_start = (r_start + align - 1) & ~(align - 1);
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if ((r_end >= r_start) && ((r_end - r_start) >= size)) {
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return r_start;
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}
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}
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/* I did not find anything :( */
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return ULONG_MAX;
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}
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static void elf_boot(unsigned long machine, unsigned long entry)
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{
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int result;
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struct Elf_Bhdr *hdr;
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multiboot_boot(entry);
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/* We cleanup unconditionally, and then reawaken the network
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* adapter after the longjmp.
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*/
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hdr = prepare_boot_params(&estate.e);
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result = elf_start(machine, entry, virt_to_phys(hdr));
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if (result == 0) {
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result = -1;
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}
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printf("Secondary program returned %d\n", result);
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longjmp(restart_etherboot, result);
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}
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#if ELF_NOTES
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static int elf_prep_segment(
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unsigned long start __unused, unsigned long mid __unused, unsigned long end __unused,
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unsigned long istart, unsigned long iend)
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{
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if (estate.check_ip_checksum) {
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if ((istart <= estate.ip_checksum_offset) &&
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(iend > estate.ip_checksum_offset)) {
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/* The checksum note is also loaded in a
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* PT_LOAD segment, so the computed checksum
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* should be 0.
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*/
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estate.ip_checksum = 0;
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}
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}
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return 1;
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}
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#else
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#define elf_prep_segment(start, mid, end, istart, iend) (1)
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#endif
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#if ELF_NOTES
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static void process_elf_notes(unsigned char *header,
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unsigned long offset, unsigned long length)
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{
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unsigned char *note, *end;
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char *program, *version;
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estate.check_ip_checksum = 0;
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note = header + offset;
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end = note + length;
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program = version = 0;
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while(note < end) {
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Elf_Nhdr *hdr;
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unsigned char *n_name, *n_desc, *next;
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hdr = (Elf_Nhdr *)note;
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n_name = note + sizeof(*hdr);
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n_desc = n_name + ((hdr->n_namesz + 3) & ~3);
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next = n_desc + ((hdr->n_descsz + 3) & ~3);
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if (next > end) {
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break;
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}
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if ((hdr->n_namesz == sizeof(ELF_NOTE_BOOT)) &&
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(memcmp(n_name, ELF_NOTE_BOOT, sizeof(ELF_NOTE_BOOT)) == 0)) {
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switch(hdr->n_type) {
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case EIN_PROGRAM_NAME:
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if (n_desc[hdr->n_descsz -1] == 0) {
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program = n_desc;
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}
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break;
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case EIN_PROGRAM_VERSION:
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if (n_desc[hdr->n_descsz -1] == 0) {
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version = n_desc;
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}
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break;
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case EIN_PROGRAM_CHECKSUM:
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estate.check_ip_checksum = 1;
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estate.ip_checksum = *((uint16_t *)n_desc);
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/* Remember where the segment is so
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* I can detect segment overlaps.
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*/
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estate.ip_checksum_offset = n_desc - header;
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#if ELF_DEBUG
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printf("Checksum: %hx\n", estate.ip_checksum);
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#endif
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break;
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}
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}
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#if ELF_DEBUG
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printf("n_type: %x n_name(%d): %s n_desc(%d): %s\n",
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hdr->n_type,
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hdr->n_namesz, n_name,
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hdr->n_descsz, n_desc);
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#endif
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note = next;
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}
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if (program && version) {
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printf("\nLoading %s version: %s\n", program, version);
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}
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}
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#endif
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#ifdef ELF_IMAGE
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static sector_t elf32_download(unsigned char *data, unsigned int len, int eof);
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static inline os_download_t elf32_probe(unsigned char *data, unsigned int len)
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{
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unsigned long phdr_size;
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if (len < sizeof(estate.e.elf32)) {
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return 0;
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}
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memcpy(&estate.e.elf32, data, sizeof(estate.e.elf32));
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if ((estate.e.elf32.e_ident[EI_MAG0] != ELFMAG0) ||
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(estate.e.elf32.e_ident[EI_MAG1] != ELFMAG1) ||
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(estate.e.elf32.e_ident[EI_MAG2] != ELFMAG2) ||
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(estate.e.elf32.e_ident[EI_MAG3] != ELFMAG3) ||
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(estate.e.elf32.e_ident[EI_CLASS] != ELFCLASS32) ||
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(estate.e.elf32.e_ident[EI_DATA] != ELFDATA_CURRENT) ||
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(estate.e.elf32.e_ident[EI_VERSION] != EV_CURRENT) ||
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( (estate.e.elf32.e_type != ET_EXEC) &&
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(estate.e.elf32.e_type != ET_DYN)) ||
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(estate.e.elf32.e_version != EV_CURRENT) ||
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(estate.e.elf32.e_ehsize != sizeof(Elf32_Ehdr)) ||
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(estate.e.elf32.e_phentsize != sizeof(Elf32_Phdr)) ||
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!ELF_CHECK_ARCH(estate.e.elf32)) {
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return 0;
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}
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printf("(ELF");
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elf_freebsd_probe();
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printf(")... ");
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phdr_size = estate.e.elf32.e_phnum * estate.e.elf32.e_phentsize;
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if (estate.e.elf32.e_phoff + phdr_size > len) {
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printf("ELF header outside first block\n");
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return dead_download;
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}
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if (phdr_size > sizeof(estate.p.dummy)) {
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printf("Program header too big\n");
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return dead_download;
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}
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memcpy(&estate.p.phdr32, data + estate.e.elf32.e_phoff, phdr_size);
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if (estate.e.elf32.e_type == ET_DYN) {
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Elf32_Addr min, max, base_addr, delta, align;
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min = -1;
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max = 0;
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align = 1;
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for(estate.segment = 0; estate.segment < estate.e.elf32.e_phnum; estate.segment++) {
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Elf32_Addr val;
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if (estate.p.phdr32[estate.segment].p_type != PT_LOAD)
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continue;
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val = estate.p.phdr32[estate.segment].p_paddr;
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if (val < min) {
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min = val;
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}
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val += estate.p.phdr32[estate.segment].p_memsz;
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if (val > max) {
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max = val;
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}
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if (estate.p.phdr32[estate.segment].p_align > align) {
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align = estate.p.phdr32[estate.segment].p_align;
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}
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}
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if (align & (align -1)) {
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printf("ELF base address alignment is not a power of 2\n");
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return dead_download;
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}
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base_addr = find_segment(max - min, align);
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if (base_addr == ULONG_MAX) {
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printf("ELF base address not available for size %ld\n", max - min);
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return dead_download;
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}
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/* Compute the change in base address and fix up the addresses */
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delta = base_addr - min;
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for(estate.segment = 0; estate.segment < estate.e.elf32.e_phnum; estate.segment++) {
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/* Change the base address of the object to load */
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estate.p.phdr32[estate.segment].p_paddr += delta;
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}
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estate.e.elf32.e_entry += delta;
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}
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#if ELF_NOTES
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/* Load ELF notes from the image */
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estate.check_ip_checksum = 0;
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for(estate.segment = 0; estate.segment < estate.e.elf32.e_phnum; estate.segment++) {
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if (estate.p.phdr32[estate.segment].p_type != PT_NOTE)
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continue;
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if (estate.p.phdr32[estate.segment].p_offset + estate.p.phdr32[estate.segment].p_filesz > len) {
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/* Ignore ELF notes outside of the first block */
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continue;
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}
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process_elf_notes(data,
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estate.p.phdr32[estate.segment].p_offset, estate.p.phdr32[estate.segment].p_filesz);
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}
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#endif
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/* Check for Etherboot related limitations. Memory
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* between _text and _end is not allowed.
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* Reasons: the Etherboot code/data area.
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*/
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for (estate.segment = 0; estate.segment < estate.e.elf32.e_phnum; estate.segment++) {
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unsigned long start, mid, end, istart, iend;
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if (estate.p.phdr32[estate.segment].p_type != PT_LOAD)
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continue;
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elf_freebsd_fixup_segment();
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start = estate.p.phdr32[estate.segment].p_paddr;
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mid = start + estate.p.phdr32[estate.segment].p_filesz;
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end = start + estate.p.phdr32[estate.segment].p_memsz;
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istart = estate.p.phdr32[estate.segment].p_offset;
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iend = istart + estate.p.phdr32[estate.segment].p_filesz;
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if (!prep_segment(start, mid, end, istart, iend)) {
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return dead_download;
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}
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if (!elf_prep_segment(start, mid, end, istart, iend)) {
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return dead_download;
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}
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}
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estate.segment = -1;
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estate.loc = 0;
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estate.skip = 0;
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estate.toread = 0;
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multiboot_init();
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return elf32_download;
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}
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static sector_t elf32_download(unsigned char *data, unsigned int len, int eof)
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{
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unsigned long skip_sectors = 0;
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unsigned int offset; /* working offset in the current data block */
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int i;
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offset = 0;
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do {
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if (estate.segment != -1) {
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if (estate.skip) {
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if (estate.skip >= len - offset) {
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estate.skip -= len - offset;
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break;
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}
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offset += estate.skip;
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estate.skip = 0;
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}
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if (estate.toread) {
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unsigned int cplen;
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cplen = len - offset;
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if (cplen >= estate.toread) {
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cplen = estate.toread;
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}
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memcpy(phys_to_virt(estate.curaddr), data+offset, cplen);
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estate.curaddr += cplen;
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estate.toread -= cplen;
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offset += cplen;
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if (estate.toread)
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break;
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elf_freebsd_find_segment_end();
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}
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}
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/* Data left, but current segment finished - look for the next
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* segment (in file offset order) that needs to be loaded.
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* We can only seek forward, so select the program headers,
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* in the correct order.
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*/
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estate.segment = -1;
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for (i = 0; i < estate.e.elf32.e_phnum; i++) {
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if (estate.p.phdr32[i].p_type != PT_LOAD)
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continue;
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if (estate.p.phdr32[i].p_filesz == 0)
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continue;
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if (estate.p.phdr32[i].p_offset < estate.loc + offset)
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continue; /* can't go backwards */
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if ((estate.segment != -1) &&
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(estate.p.phdr32[i].p_offset >= estate.p.phdr32[estate.segment].p_offset))
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continue; /* search minimum file offset */
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estate.segment = i;
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}
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if (estate.segment == -1) {
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if (elf_freebsd_debug_loader(offset)) {
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estate.segment = 0; /* -1 makes it not read anymore */
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continue;
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}
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/* No more segments to be loaded, so just start the
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* kernel. This saves a lot of network bandwidth if
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* debug info is in the kernel but not loaded. */
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goto elf_startkernel;
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break;
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}
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estate.curaddr = estate.p.phdr32[estate.segment].p_paddr;
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estate.skip = estate.p.phdr32[estate.segment].p_offset - (estate.loc + offset);
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estate.toread = estate.p.phdr32[estate.segment].p_filesz;
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#if ELF_DEBUG
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printf("PHDR %d, size %#lX, curaddr %#lX\n",
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estate.segment, estate.toread, estate.curaddr);
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#endif
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} while (offset < len);
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estate.loc += len + (estate.skip & ~0x1ff);
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skip_sectors = estate.skip >> 9;
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estate.skip &= 0x1ff;
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if (eof) {
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unsigned long entry;
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unsigned long machine;
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elf_startkernel:
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entry = estate.e.elf32.e_entry;
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machine = estate.e.elf32.e_machine;
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#if ELF_NOTES
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if (estate.check_ip_checksum) {
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unsigned long bytes = 0;
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uint16_t sum, new_sum;
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sum = ipchksum(&estate.e.elf32, sizeof(estate.e.elf32));
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bytes = sizeof(estate.e.elf32);
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#if ELF_DEBUG
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printf("Ehdr: %hx %hx sz: %lx bytes: %lx\n",
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sum, sum, bytes, bytes);
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#endif
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new_sum = ipchksum(estate.p.phdr32, sizeof(estate.p.phdr32[0]) * estate.e.elf32.e_phnum);
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sum = add_ipchksums(bytes, sum, new_sum);
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bytes += sizeof(estate.p.phdr32[0]) * estate.e.elf32.e_phnum;
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#if ELF_DEBUG
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printf("Phdr: %hx %hx sz: %lx bytes: %lx\n",
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new_sum, sum,
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sizeof(estate.p.phdr32[0]) * estate.e.elf32.e_phnum, bytes);
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#endif
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for(i = 0; i < estate.e.elf32.e_phnum; i++) {
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if (estate.p.phdr32[i].p_type != PT_LOAD)
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continue;
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new_sum = ipchksum(phys_to_virt(estate.p.phdr32[i].p_paddr),
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estate.p.phdr32[i].p_memsz);
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sum = add_ipchksums(bytes, sum, new_sum);
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bytes += estate.p.phdr32[i].p_memsz;
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#if ELF_DEBUG
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printf("seg%d: %hx %hx sz: %x bytes: %lx\n",
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i, new_sum, sum,
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estate.p.phdr32[i].p_memsz, bytes);
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#endif
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}
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if (estate.ip_checksum != sum) {
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printf("\nImage checksum: %hx != computed checksum: %hx\n",
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estate.ip_checksum, sum);
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longjmp(restart_etherboot, -2);
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}
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}
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#endif
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done(1);
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/* Fixup the offset to the program header so you can find the program headers from
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* the ELF header mknbi needs this.
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*/
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estate.e.elf32.e_phoff = (char *)&estate.p - (char *)&estate.e;
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elf_freebsd_boot(entry);
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elf_boot(machine,entry);
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}
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return skip_sectors;
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}
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#endif /* ELF_IMAGE */
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#ifdef ELF64_IMAGE
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static sector_t elf64_download(unsigned char *data, unsigned int len, int eof);
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static inline os_download_t elf64_probe(unsigned char *data, unsigned int len)
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{
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unsigned long phdr_size;
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if (len < sizeof(estate.e.elf64)) {
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return 0;
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}
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memcpy(&estate.e.elf64, data, sizeof(estate.e.elf64));
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if ((estate.e.elf64.e_ident[EI_MAG0] != ELFMAG0) ||
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(estate.e.elf64.e_ident[EI_MAG1] != ELFMAG1) ||
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(estate.e.elf64.e_ident[EI_MAG2] != ELFMAG2) ||
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(estate.e.elf64.e_ident[EI_MAG3] != ELFMAG3) ||
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(estate.e.elf64.e_ident[EI_CLASS] != ELFCLASS64) ||
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(estate.e.elf64.e_ident[EI_DATA] != ELFDATA_CURRENT) ||
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(estate.e.elf64.e_ident[EI_VERSION] != EV_CURRENT) ||
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( (estate.e.elf64.e_type != ET_EXEC) &&
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(estate.e.elf64.e_type != ET_DYN)) ||
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(estate.e.elf64.e_version != EV_CURRENT) ||
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(estate.e.elf64.e_ehsize != sizeof(Elf64_Ehdr)) ||
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(estate.e.elf64.e_phentsize != sizeof(Elf64_Phdr)) ||
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!ELF_CHECK_ARCH(estate.e.elf64)) {
|
|
return 0;
|
|
}
|
|
printf("(ELF64)... ");
|
|
phdr_size = estate.e.elf64.e_phnum * estate.e.elf64.e_phentsize;
|
|
if (estate.e.elf64.e_phoff + phdr_size > len) {
|
|
printf("ELF header outside first block\n");
|
|
return dead_download;
|
|
}
|
|
if (phdr_size > sizeof(estate.p.dummy)) {
|
|
printf("Program header to big\n");
|
|
return dead_download;
|
|
}
|
|
if (estate.e.elf64.e_entry > ULONG_MAX) {
|
|
printf("ELF entry point exceeds address space\n");
|
|
return dead_download;
|
|
}
|
|
memcpy(&estate.p.phdr64, data + estate.e.elf64.e_phoff, phdr_size);
|
|
if (estate.e.elf64.e_type == ET_DYN) {
|
|
Elf64_Addr min, max, base_addr, delta, align;
|
|
min = -1;
|
|
max = 0;
|
|
align = 1;
|
|
for(estate.segment = 0; estate.segment < estate.e.elf64.e_phnum; estate.segment++) {
|
|
Elf64_Addr val;
|
|
if (estate.p.phdr64[estate.segment].p_type != PT_LOAD)
|
|
continue;
|
|
val = estate.p.phdr64[estate.segment].p_paddr;
|
|
if (val < min) {
|
|
min = val;
|
|
}
|
|
val += estate.p.phdr64[estate.segment].p_memsz;
|
|
if (val > max) {
|
|
max = val;
|
|
}
|
|
if (estate.p.phdr64[estate.segment].p_align > align) {
|
|
align = estate.p.phdr64[estate.segment].p_align;
|
|
}
|
|
}
|
|
if (align > ULONG_MAX) {
|
|
printf("ELF base address alignment exceeds address space\n");
|
|
return dead_download;
|
|
}
|
|
if (align & (align -1)) {
|
|
printf("ELF base address alignment is not a power of 2\n");
|
|
return dead_download;
|
|
}
|
|
if ((max - min) > ULONG_MAX) {
|
|
printf("ELF size exceeds address space\n");
|
|
return dead_download;
|
|
}
|
|
base_addr = find_segment(max - min, align);
|
|
if (base_addr == ULONG_MAX) {
|
|
printf("ELF base address not available for size %ld\n", max - min);
|
|
return dead_download;
|
|
}
|
|
/* Compute the change in base address and fix up the addresses */
|
|
delta = base_addr - min;
|
|
for(estate.segment = 0; estate.segment < estate.e.elf64.e_phnum; estate.segment++) {
|
|
/* Change the base address of the object to load */
|
|
estate.p.phdr64[estate.segment].p_paddr += delta;
|
|
}
|
|
estate.e.elf64.e_entry += delta;
|
|
}
|
|
#if ELF_NOTES
|
|
/* Load ELF notes from the image */
|
|
estate.check_ip_checksum = 0;
|
|
for(estate.segment = 0; estate.segment < estate.e.elf64.e_phnum; estate.segment++) {
|
|
if (estate.p.phdr64[estate.segment].p_type != PT_NOTE)
|
|
continue;
|
|
if (estate.p.phdr64[estate.segment].p_offset + estate.p.phdr64[estate.segment].p_filesz > len) {
|
|
/* Ignore ELF notes outside of the first block */
|
|
continue;
|
|
}
|
|
process_elf_notes(data,
|
|
estate.p.phdr64[estate.segment].p_offset, estate.p.phdr64[estate.segment].p_filesz);
|
|
}
|
|
#endif
|
|
/* Check for Etherboot related limitations. Memory
|
|
* between _text and _end is not allowed.
|
|
* Reasons: the Etherboot code/data area.
|
|
*/
|
|
for (estate.segment = 0; estate.segment < estate.e.elf64.e_phnum; estate.segment++) {
|
|
unsigned long start, mid, end, istart, iend;
|
|
if (estate.p.phdr64[estate.segment].p_type != PT_LOAD)
|
|
continue;
|
|
if ((estate.p.phdr64[estate.segment].p_paddr > ULONG_MAX) ||
|
|
((estate.p.phdr64[estate.segment].p_paddr + estate.p.phdr64[estate.segment].p_filesz) > ULONG_MAX) ||
|
|
((estate.p.phdr64[estate.segment].p_paddr + estate.p.phdr64[estate.segment].p_memsz) > ULONG_MAX)) {
|
|
printf("ELF segment exceeds address space\n");
|
|
return dead_download;
|
|
}
|
|
start = estate.p.phdr64[estate.segment].p_paddr;
|
|
mid = start + estate.p.phdr64[estate.segment].p_filesz;
|
|
end = start + estate.p.phdr64[estate.segment].p_memsz;
|
|
istart = iend = ULONG_MAX;
|
|
if ((estate.p.phdr64[estate.segment].p_offset < ULONG_MAX) &&
|
|
((estate.p.phdr64[estate.segment].p_offset + estate.p.phdr64[estate.segment].p_filesz) < ULONG_MAX))
|
|
{
|
|
istart = estate.p.phdr64[estate.segment].p_offset;
|
|
iend = istart + estate.p.phdr64[estate.segment].p_filesz;
|
|
}
|
|
if (!prep_segment(start, mid, end, istart, iend)) {
|
|
return dead_download;
|
|
}
|
|
if (!elf_prep_segment(start, mid, end, istart, iend)) {
|
|
return dead_download;
|
|
}
|
|
}
|
|
estate.segment = -1;
|
|
estate.loc = 0;
|
|
estate.skip = 0;
|
|
estate.toread = 0;
|
|
return elf64_download;
|
|
}
|
|
|
|
static sector_t elf64_download(unsigned char *data, unsigned int len, int eof)
|
|
{
|
|
unsigned long skip_sectors = 0;
|
|
unsigned int offset; /* working offset in the current data block */
|
|
int i;
|
|
|
|
offset = 0;
|
|
do {
|
|
if (estate.segment != -1) {
|
|
if (estate.skip) {
|
|
if (estate.skip >= len - offset) {
|
|
estate.skip -= len - offset;
|
|
break;
|
|
}
|
|
offset += estate.skip;
|
|
estate.skip = 0;
|
|
}
|
|
|
|
if (estate.toread) {
|
|
unsigned int cplen;
|
|
cplen = len - offset;
|
|
if (cplen >= estate.toread) {
|
|
cplen = estate.toread;
|
|
}
|
|
memcpy(phys_to_virt(estate.curaddr), data+offset, cplen);
|
|
estate.curaddr += cplen;
|
|
estate.toread -= cplen;
|
|
offset += cplen;
|
|
if (estate.toread)
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Data left, but current segment finished - look for the next
|
|
* segment (in file offset order) that needs to be loaded.
|
|
* We can only seek forward, so select the program headers,
|
|
* in the correct order.
|
|
*/
|
|
estate.segment = -1;
|
|
for (i = 0; i < estate.e.elf64.e_phnum; i++) {
|
|
if (estate.p.phdr64[i].p_type != PT_LOAD)
|
|
continue;
|
|
if (estate.p.phdr64[i].p_filesz == 0)
|
|
continue;
|
|
if (estate.p.phdr64[i].p_offset < estate.loc + offset)
|
|
continue; /* can't go backwards */
|
|
if ((estate.segment != -1) &&
|
|
(estate.p.phdr64[i].p_offset >= estate.p.phdr64[estate.segment].p_offset))
|
|
continue; /* search minimum file offset */
|
|
estate.segment = i;
|
|
}
|
|
if (estate.segment == -1) {
|
|
/* No more segments to be loaded, so just start the
|
|
* kernel. This saves a lot of network bandwidth if
|
|
* debug info is in the kernel but not loaded. */
|
|
goto elf_startkernel;
|
|
break;
|
|
}
|
|
estate.curaddr = estate.p.phdr64[estate.segment].p_paddr;
|
|
estate.skip = estate.p.phdr64[estate.segment].p_offset - (estate.loc + offset);
|
|
estate.toread = estate.p.phdr64[estate.segment].p_filesz;
|
|
#if ELF_DEBUG
|
|
printf("PHDR %d, size %#lX, curaddr %#lX\n",
|
|
estate.segment, estate.toread, estate.curaddr);
|
|
#endif
|
|
} while (offset < len);
|
|
|
|
estate.loc += len + (estate.skip & ~0x1ff);
|
|
skip_sectors = estate.skip >> 9;
|
|
estate.skip &= 0x1ff;
|
|
|
|
if (eof) {
|
|
unsigned long entry;
|
|
unsigned long machine;
|
|
elf_startkernel:
|
|
entry = estate.e.elf64.e_entry;
|
|
machine = estate.e.elf64.e_machine;
|
|
#if ELF_NOTES
|
|
if (estate.check_ip_checksum) {
|
|
unsigned long bytes = 0;
|
|
uint16_t sum, new_sum;
|
|
|
|
sum = ipchksum(&estate.e.elf64, sizeof(estate.e.elf64));
|
|
bytes = sizeof(estate.e.elf64);
|
|
#if ELF_DEBUG
|
|
printf("Ehdr: %hx %hx sz: %lx bytes: %lx\n",
|
|
sum, sum, bytes, bytes);
|
|
#endif
|
|
|
|
new_sum = ipchksum(estate.p.phdr64, sizeof(estate.p.phdr64[0]) * estate.e.elf64.e_phnum);
|
|
sum = add_ipchksums(bytes, sum, new_sum);
|
|
bytes += sizeof(estate.p.phdr64[0]) * estate.e.elf64.e_phnum;
|
|
#if ELF_DEBUG
|
|
printf("Phdr: %hx %hx sz: %lx bytes: %lx\n",
|
|
new_sum, sum,
|
|
sizeof(estate.p.phdr64[0]) * estate.e.elf64.e_phnum, bytes);
|
|
#endif
|
|
|
|
for(i = 0; i < estate.e.elf64.e_phnum; i++) {
|
|
if (estate.p.phdr64[i].p_type != PT_LOAD)
|
|
continue;
|
|
new_sum = ipchksum(phys_to_virt(estate.p.phdr64[i].p_paddr),
|
|
estate.p.phdr64[i].p_memsz);
|
|
sum = add_ipchksums(bytes, sum, new_sum);
|
|
bytes += estate.p.phdr64[i].p_memsz;
|
|
#if ELF_DEBUG
|
|
printf("seg%d: %hx %hx sz: %x bytes: %lx\n",
|
|
i, new_sum, sum,
|
|
estate.p.phdr64[i].p_memsz, bytes);
|
|
#endif
|
|
|
|
}
|
|
if (estate.ip_checksum != sum) {
|
|
printf("\nImage checksum: %hx != computed checksum: %hx\n",
|
|
estate.ip_checksum, sum);
|
|
longjmp(restart_etherboot, -2);
|
|
}
|
|
}
|
|
#endif
|
|
done(1);
|
|
/* Fixup the offset to the program header so you can find the program headers from
|
|
* the ELF header mknbi needs this.
|
|
*/
|
|
estate.e.elf64.e_phoff = (char *)&estate.p - (char *)&estate.e;
|
|
elf_boot(machine,entry);
|
|
}
|
|
return skip_sectors;
|
|
}
|
|
|
|
#endif /* ELF64_IMAGE */
|