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Diffstat (limited to 'util/mkelfImage/linux-i386/mkelf-linux-i386.c')
-rw-r--r--util/mkelfImage/linux-i386/mkelf-linux-i386.c466
1 files changed, 0 insertions, 466 deletions
diff --git a/util/mkelfImage/linux-i386/mkelf-linux-i386.c b/util/mkelfImage/linux-i386/mkelf-linux-i386.c
deleted file mode 100644
index 47256fd2f4..0000000000
--- a/util/mkelfImage/linux-i386/mkelf-linux-i386.c
+++ /dev/null
@@ -1,466 +0,0 @@
-#include <stdio.h>
-#include <errno.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <string.h>
-#define _GNU_SOURCE
-#include <getopt.h>
-#include "elf.h"
-#include "elf_boot.h"
-#include "convert.h"
-#include "x86-linux.h"
-#include "mkelfImage.h"
-
-static unsigned char payload[] = {
-#include "convert.bin.c"
-};
-
-struct kernel_info;
-static void (*parse_kernel_type)(struct kernel_info *info, char *kernel_buf, size_t kernel_size);
-static void parse_bzImage_kernel(struct kernel_info *info, char *kernel_buf, size_t kernel_size);
-static void parse_elf32_kernel(struct kernel_info *info, char *kernel_buf, size_t kernel_size);
-static void parse_elf64_kernel(struct kernel_info *info, char *kernel_buf, size_t kernel_size);
-
-char *vmlinux_x86_64_probe(char *kernel_buf, off_t kernel_size);
-
-char *vmlinux_i386_probe(char *kernel_buf, off_t kernel_size)
-{
- Elf32_Ehdr *ehdr;
- Elf32_Phdr *phdr;
- int i;
- int phdrs;
- ehdr = (Elf32_Ehdr *)kernel_buf;
- if (
- (ehdr->e_ident[EI_MAG0] != ELFMAG0) ||
- (ehdr->e_ident[EI_MAG1] != ELFMAG1) ||
- (ehdr->e_ident[EI_MAG2] != ELFMAG2) ||
- (ehdr->e_ident[EI_MAG3] != ELFMAG3)) {
- return "No ELF signature found on kernel\n";
- }
- if (ehdr->e_ident[EI_CLASS] != ELFCLASS32) {
- return vmlinux_x86_64_probe(kernel_buf, kernel_size);
-// return "Not a 32bit ELF kernel\n";
- }
- if (ehdr->e_ident[EI_DATA] != ELFDATA2LSB) {
- return "Not a little endian ELF kernel\n";
- }
- if (le16_to_cpu(ehdr->e_type) != ET_EXEC) {
- return "Not an executable kernel\n";
- }
- if (le16_to_cpu(ehdr->e_machine) != EM_386) {
- return "Not an i386 kernel\n";
- }
- if ( (ehdr->e_ident[EI_VERSION] != EV_CURRENT) ||
- (le32_to_cpu(ehdr->e_version) != EV_CURRENT)) {
- return "Kernel not using ELF version 1.\n";
- }
- if (le16_to_cpu(ehdr->e_phentsize) != sizeof(*phdr)) {
- return "Kernel uses bad program header size.\n";
- }
- phdr = (Elf32_Phdr *)(kernel_buf + le32_to_cpu(ehdr->e_phoff));
- phdrs = 0;
- for(i = 0; i < le16_to_cpu(ehdr->e_phnum); i++) {
- if (le32_to_cpu(phdr[i].p_type) != PT_LOAD)
- continue;
- phdrs++;
- }
- if (phdrs == 0) {
- return "No PT_LOAD segments!\n";
- }
- parse_kernel_type = parse_elf32_kernel;
- return 0;
-}
-char *vmlinux_x86_64_probe(char *kernel_buf, off_t kernel_size)
-{
- Elf64_Ehdr *ehdr;
- Elf64_Phdr *phdr;
- int i;
- int phdrs = 0;
- ehdr = (Elf64_Ehdr *)kernel_buf;
- if (
- (ehdr->e_ident[EI_MAG0] != ELFMAG0) ||
- (ehdr->e_ident[EI_MAG1] != ELFMAG1) ||
- (ehdr->e_ident[EI_MAG2] != ELFMAG2) ||
- (ehdr->e_ident[EI_MAG3] != ELFMAG3)) {
- return "No ELF signature found on kernel\n";
- }
- if (ehdr->e_ident[EI_CLASS] != ELFCLASS64) {
- return "Not a 64bit ELF kernel\n";
- }
- if (ehdr->e_ident[EI_DATA] != ELFDATA2LSB) {
- return "Not a little endian ELF kernel\n";
- }
- if (le16_to_cpu(ehdr->e_type) != ET_EXEC) {
- return "Not an executable kernel\n";
- }
- if (le16_to_cpu(ehdr->e_machine) != EM_X86_64) {
- return "Not an x86_64 kernel\n";
- }
- if ( (ehdr->e_ident[EI_VERSION] != EV_CURRENT) ||
- (le32_to_cpu(ehdr->e_version) != EV_CURRENT)) {
- return "Kernel not using ELF version 1.\n";
- }
- if (le16_to_cpu(ehdr->e_phentsize) != sizeof(*phdr)) {
- return "Kernel uses bad program header size.\n";
- }
- phdr = (Elf64_Phdr *)(kernel_buf + le64_to_cpu(ehdr->e_phoff));
- phdrs = 0;
- for(i = 0; i < le16_to_cpu(ehdr->e_phnum); i++) {
- if (le32_to_cpu(phdr[i].p_type) != PT_LOAD)
- continue;
- phdrs++;
- }
- if (phdrs == 0) {
- return "No PT_LOAD segments!\n";
- }
- parse_kernel_type = parse_elf64_kernel;
- return 0;
-}
-
-char *bzImage_i386_probe(char *kernel_buf, off_t kernel_size)
-{
- struct x86_linux_header *hdr;
- unsigned long offset;
- int setup_sects;
- hdr = (struct x86_linux_header *)kernel_buf;
-
- if (le16_to_cpu(hdr->boot_sector_magic) != 0xaa55) {
- return "No bootsector magic";
- }
- if (memcmp(hdr->header_magic, "HdrS", 4) != 0) {
- return "Not a linux kernel";
- }
-
- if (le16_to_cpu(hdr->protocol_version) < 0x202) {
- return "Kernel protcols version before 2.02 not supported";
- }
-
- setup_sects = hdr->setup_sects;
- if (setup_sects == 0) {
- setup_sects = 4;
- }
- offset = 512 + (512 *setup_sects);
- if (offset > kernel_size) {
- return "Not enough bytes";
- }
- parse_kernel_type = parse_bzImage_kernel;
- return 0;
-}
-
-char *linux_i386_probe(char *kernel_buf, off_t kernel_size)
-{
- char *result;
- result = "";
- if (result) result = bzImage_i386_probe(kernel_buf, kernel_size);
- if (result) result = vmlinux_i386_probe(kernel_buf, kernel_size);
- if (result) result = bzImage_i386_probe(kernel_buf, kernel_size);
- return result;
-}
-
-#define NR_SECTIONS 16
-
-struct kernel_info
-{
- int phdrs;
- void *kernel[NR_SECTIONS];
- size_t filesz[NR_SECTIONS];
- size_t memsz[NR_SECTIONS];
- size_t paddr[NR_SECTIONS];
- size_t vaddr[NR_SECTIONS];
- size_t entry;
- size_t switch_64;
- char *version;
-};
-
-static void parse_elf32_kernel(struct kernel_info *info, char *kernel_buf, size_t kernel_size)
-{
- Elf32_Ehdr *ehdr;
- Elf32_Phdr *phdr;
- int i;
- int phdrs;
- ehdr = (Elf32_Ehdr *)kernel_buf;
- phdr = (Elf32_Phdr *)(kernel_buf + ehdr->e_phoff);
- phdrs = 0;
- for(i = 0; i < le16_to_cpu(ehdr->e_phnum); i++) {
- if (le32_to_cpu(phdr[i].p_type) != PT_LOAD)
- continue;
- if(phdrs == NR_SECTIONS)
- die("NR_SECTIONS is too small\n");
- info->kernel[phdrs] = kernel_buf + le32_to_cpu(phdr[i].p_offset);
- info->filesz[phdrs] = le32_to_cpu(phdr[i].p_filesz);
- info->memsz[phdrs] = le32_to_cpu(phdr[i].p_memsz);
- info->paddr[phdrs] = le32_to_cpu(phdr[i].p_paddr) & 0xfffffff;
- info->vaddr[phdrs] = le32_to_cpu(phdr[i].p_vaddr);
- phdrs++;
- }
-
- if(!phdrs)
- die("We need at least one phdr\n");
-
- info->phdrs = phdrs;
- info->entry = le32_to_cpu(ehdr->e_entry);
- info->switch_64 = 0; //not convert from elf64
- info->version = "unknown";
-}
-
-static void parse_elf64_kernel(struct kernel_info *info, char *kernel_buf, size_t kernel_size)
-{
- Elf64_Ehdr *ehdr;
- Elf64_Phdr *phdr;
- int i;
- int phdrs;
- ehdr = (Elf64_Ehdr *)kernel_buf;
- phdr = (Elf64_Phdr *)(kernel_buf + le64_to_cpu(ehdr->e_phoff));
-
- phdrs = 0;
- for(i = 0; i < le16_to_cpu(ehdr->e_phnum); i++) {
- if (le32_to_cpu(phdr[i].p_type) != PT_LOAD)
- continue;
- if(phdrs == NR_SECTIONS)
- die("NR_SECTIONS is too small\n");
- info->kernel[phdrs] = kernel_buf + le64_to_cpu(phdr[i].p_offset);
- info->filesz[phdrs] = le64_to_cpu(phdr[i].p_filesz);
- info->memsz[phdrs] = le64_to_cpu(phdr[i].p_memsz);
- info->paddr[phdrs] = le64_to_cpu(phdr[i].p_paddr) & 0xfffffff;
- info->vaddr[phdrs] = le64_to_cpu(phdr[i].p_vaddr);
- phdrs++;
- }
-
- if(!phdrs)
- die("We need at least one phdr\n");
-
- info->phdrs = phdrs;
- info->entry = le64_to_cpu(ehdr->e_entry);
-#if 0
- if (info->entry != info->paddr[0]) {
- info->entry = info->paddr[0]; // we still have startup_32 there
- info->switch_64 = 0; //not convert from elf64
- } else
-#endif
- info->switch_64 = 1; //convert from elf64
-
- info->version = "unknown";
-}
-
-
-static void parse_bzImage_kernel(struct kernel_info *info, char *kernel_buf, size_t kernel_size)
-{
- struct x86_linux_header *hdr;
- unsigned long offset;
- int setup_sects;
- hdr = (struct x86_linux_header *)kernel_buf;
- setup_sects = hdr->setup_sects;
- if (setup_sects == 0) {
- setup_sects = 4;
- }
- offset = 512 + (512 *setup_sects);
-
- info->kernel[0] = kernel_buf + offset;
- info->filesz[0] = kernel_size - offset;
- info->memsz[0] = 0x700000;
- info->paddr[0] = 0x100000;
- info->vaddr[0] = 0x100000;
- info->phdrs = 1;
- info->entry = info->paddr[0];
- info->switch_64 = 0; //not convert from elf64, even later bzImage become elf64, it still includes startup_32
- info->version = kernel_buf + 512 + le16_to_cpu(hdr->kver_addr);
-}
-
-static void parse_kernel(struct kernel_info *info, char *kernel_buf, size_t kernel_size)
-{
- memset(info, 0, sizeof(*info));
- if (parse_kernel_type) {
- parse_kernel_type(info, kernel_buf, kernel_size);
- }
- else {
- die("Unknown kernel format");
- }
-}
-
-void linux_i386_usage(void)
-{
- printf(
- " --command-line=<string> Set the command line to <string>\n"
- " --append=<string> Set the command line to <string>\n"
- " --initrd=<filename> Set the initrd to <filename>\n"
- " --ramdisk=<filename> Set the initrd to <filename>\n"
- " --ramdisk-base=<addr> Set the initrd load address to <addr>\n"
- );
- return;
-}
-
-
-#define OPT_CMDLINE OPT_MAX+0
-#define OPT_RAMDISK OPT_MAX+1
-#define OPT_RAMDISK_BASE OPT_MAX+2
-
-#define DEFAULT_RAMDISK_BASE (8*1024*1024)
-
-int linux_i386_mkelf(int argc, char **argv,
- struct memelfheader *ehdr, char *kernel_buf, off_t kernel_size)
-{
- const char *ramdisk, *cmdline;
- unsigned long ramdisk_base;
- char *payload_buf, *ramdisk_buf;
- off_t payload_size, ramdisk_size;
- struct memelfphdr *phdr;
- struct memelfnote *note;
- struct kernel_info kinfo;
- struct image_parameters *params;
- int index;
- int i;
-
- int opt;
- static const struct option options[] = {
- MKELF_OPTIONS
- { "command-line", 1, 0, OPT_CMDLINE },
- { "append", 1, 0, OPT_CMDLINE },
- { "initrd", 1, 0, OPT_RAMDISK },
- { "ramdisk", 1, 0, OPT_RAMDISK },
- { "ramdisk-base", 1, 0, OPT_RAMDISK_BASE },
- { 0 , 0, 0, 0 },
- };
- static const char short_options[] = MKELF_OPT_STR;
-
- ramdisk_base = DEFAULT_RAMDISK_BASE;
- ramdisk = 0;
- cmdline="";
-
- while((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
- switch(opt) {
- case '?':
- error("Unknown option %s\n", argv[optind]);
- break;
- case OPT_RAMDISK_BASE:
- {
- char *end;
- unsigned long base;
- base = strtoul(optarg, &end, 0);
- if ((end == optarg) || (*end != '\0')) {
- error("Invalid ramdisk base\n");
- }
- ramdisk_base = base;
- }
- case OPT_RAMDISK:
- ramdisk = optarg;
- break;
- case OPT_CMDLINE:
- cmdline = optarg;
- break;
- default:
- break;
- }
- }
- ehdr->ei_class = ELFCLASS32;
- ehdr->ei_data = ELFDATA2LSB;
- ehdr->e_type = ET_EXEC;
- ehdr->e_machine = EM_386;
-
- /* locate the payload buffer */
- payload_buf = payload;
- payload_size = sizeof(payload);
-
- /* slurp the input files */
- ramdisk_buf = slurp_file(ramdisk, &ramdisk_size);
-
- /* parse the kernel */
- parse_kernel(&kinfo, kernel_buf, kernel_size);
-
- /* Find the parameters */
- params = (void *)(payload_buf + (payload_size - sizeof(*params)));
-
- /* A sanity check against bad versions of binutils */
- if (params->convert_magic != CONVERT_MAGIC) {
- die("Internal error convert_magic %08x != %08x\n",
- params->convert_magic, CONVERT_MAGIC);
- }
-
- /* Copy the command line */
- strncpy(params->cmdline, cmdline, sizeof(params->cmdline));
- params->cmdline[sizeof(params->cmdline)-1]= '\0';
-
-
- /* Add a program header for the note section */
- index = 4;
- index += (kinfo.phdrs - 1);
- index += ramdisk_size ? 1:0;
- phdr = add_program_headers(ehdr, index);
-
- /* Fill in the program headers*/
- phdr[0].p_type = PT_NOTE;
-
- /* Fill in the converter program headers */
- phdr[1].p_paddr = CONVERTLOC;
- phdr[1].p_vaddr = CONVERTLOC;
- phdr[1].p_filesz = payload_size;
- phdr[1].p_memsz = payload_size + params->bss_size;
- phdr[1].p_data = payload;
-
- /* Reserve space for the REAL MODE DATA segment AND the GDT segment */
- phdr[2].p_paddr = REAL_MODE_DATA_LOC;
- phdr[2].p_vaddr = REAL_MODE_DATA_LOC;
- phdr[2].p_filesz = 0;
- if(!kinfo.switch_64)
- phdr[2].p_memsz = (GDTLOC - REAL_MODE_DATA_LOC) + params->gdt_size;
- else
- phdr[2].p_memsz = (PGTLOC - REAL_MODE_DATA_LOC) + params->pgt_size;
- phdr[2].p_data = 0;
-
- if( (phdr[1].p_paddr + phdr[1].p_memsz) > phdr[2].p_paddr) {
- die("Internal error: need to increase REAL_MODE_DATA_LOC !\n");
- }
-
- index = 3;
- /* Put the second kernel frament if present */
- for(i=0;i<kinfo.phdrs;i++) {
- phdr[index].p_paddr = kinfo.paddr[i];
- phdr[index].p_vaddr = kinfo.vaddr[i];
- phdr[index].p_filesz = kinfo.filesz[i];
- phdr[index].p_memsz = kinfo.memsz[i];
- phdr[index].p_data = kinfo.kernel[i];
- index++;
- }
-
- /* Put the ramdisk at ramdisk base.
- */
- params->initrd_start = params->initrd_size = 0;
- if (ramdisk_size) {
- if( (phdr[index-1].p_paddr + phdr[index-1].p_memsz) > ramdisk_base) {
- die("need to increase increase ramdisk_base !\n");
- }
-
- phdr[index].p_paddr = ramdisk_base;
- phdr[index].p_vaddr = ramdisk_base;
- phdr[index].p_filesz = ramdisk_size;
- phdr[index].p_memsz = ramdisk_size;
- phdr[index].p_data = ramdisk_buf;
- params->initrd_start = phdr[index].p_paddr;
- params->initrd_size = phdr[index].p_filesz;
- index++;
- }
-
- /* Set the start location */
- params->entry = kinfo.entry;
- params->switch_64 = kinfo.switch_64;
- ehdr->e_entry = phdr[1].p_paddr;
-
- /* Setup the elf notes */
- note = add_notes(ehdr, 3);
- note[0].n_type = EIN_PROGRAM_NAME;
- note[0].n_name = "ELFBoot";
- note[0].n_desc = "Linux";
- note[0].n_descsz = strlen(note[0].n_desc)+1;
-
- note[1].n_type = EIN_PROGRAM_VERSION;
- note[1].n_name = "ELFBoot";
- note[1].n_desc = kinfo.version;
- note[1].n_descsz = strlen(note[1].n_desc);
-
- note[2].n_type = EIN_PROGRAM_CHECKSUM;
- note[2].n_name = "ELFBoot";
- note[2].n_desc = 0;
- note[2].n_descsz = 2;
-
- return 0;
-}
-
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