hz

2026-05-06 19:51:30 +07:00
commit 3958b0edcf
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+/****************************************************************************
+ * tools/cxd56/mkspk.c
+ *
+ * Copyright (C) 2007, 2008 Sony Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <assert.h>
+
+#include "mkspk.h"
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+struct args
+{
+  int core;
+  char *elffile;
+  char *savename;
+  char *outputfile;
+};
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static uint8_t vmk[16] =
+  "\x27\xc0\xaf\x1b\x5d\xcb\xc6\xc5\x58\x22\x1c\xdd\xaf\xf3\x20\x21";
+
+static struct args g_options =
+{
+  0
+};
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+static struct args *parse_args(int argc, char **argv)
+{
+  int opt;
+  int show_help;
+  struct args *args = &g_options;
+  char *endp;
+
+  show_help = 0;
+
+  if (argc < 2)
+    {
+      show_help = 1;
+    }
+
+  memset(args, 0, sizeof(*args));
+  args->core = -1;
+
+  while ((opt = getopt(argc, argv, "h:c:")) != -1)
+    {
+      switch (opt)
+        {
+        case 'c':
+          args->core = strtol(optarg, &endp, 0);
+          if (*endp)
+            {
+              fprintf(stderr, "Invalid core number \"%s\"\n", optarg);
+              show_help = 1;
+            }
+          break;
+
+        case 'h':
+        default:
+          show_help = 1;
+        }
+    }
+
+  argc -= optind;
+  argv += optind;
+
+  args->elffile = argv[0];
+  args->savename = argv[1];
+  argc -= 2;
+  argv += 2;
+
+  if (argc > 0)
+    {
+      args->outputfile = strdup(argv[0]);
+    }
+  else
+    {
+      show_help = 1;
+    }
+
+  /* Sanity checks for options */
+
+  if (show_help == 1)
+    {
+      fprintf(stderr,
+              "mkspk [-c <number>] <filename> <save name> [<output file>]\n");
+      exit(EXIT_FAILURE);
+    }
+
+  if (args->core < 0)
+    {
+      fprintf(stderr, "Core number is not set. Please use -c option.\n");
+      exit(EXIT_FAILURE);
+    }
+
+  if (strlen(args->savename) > 63)
+    {
+      fprintf(stderr, "savename too long.\n");
+      exit(EXIT_FAILURE);
+    }
+
+  return args;
+}
+
+static struct elf_file *load_elf(const char *filename)
+{
+  size_t fsize;
+  int pos;
+  char *buf;
+  FILE *fp;
+  struct elf_file *ef;
+  Elf32_Shdr *sh;
+  uint16_t i;
+  int ret;
+
+  fp = fopen(filename, "rb");
+  if (!fp)
+    {
+      return NULL;
+    }
+
+  ef = (struct elf_file *)malloc(sizeof(*ef));
+  if (!ef)
+    {
+      fclose(fp);
+      return NULL;
+    }
+
+  pos = fseek(fp, 0, SEEK_END);
+  fsize = (size_t) ftell(fp);
+  fseek(fp, pos, SEEK_SET);
+
+  buf = (char *)malloc(fsize);
+  if (!buf)
+    {
+      free(ef);
+      fclose(fp);
+      return NULL;
+    }
+
+  ret = fread(buf, fsize, 1, fp);
+  fclose(fp);
+  if (ret != 1)
+    {
+      free(ef);
+      free(buf);
+      return NULL;
+    }
+
+  ef->data = buf;
+
+  ef->ehdr = (Elf32_Ehdr *) buf;
+
+  Elf32_Ehdr *h = (Elf32_Ehdr *) buf;
+
+  if (!(h->e_ident[EI_MAG0] == 0x7f &&
+        h->e_ident[EI_MAG1] == 'E' &&
+        h->e_ident[EI_MAG2] == 'L' && h->e_ident[EI_MAG3] == 'F'))
+    {
+      free(ef);
+      free(buf);
+      return NULL;
+    }
+
+  ef->phdr = (Elf32_Phdr *) (buf + ef->ehdr->e_phoff);
+  ef->shdr = (Elf32_Shdr *) (buf + ef->ehdr->e_shoff);
+  ef->shstring = buf + ef->shdr[ef->ehdr->e_shstrndx].sh_offset;
+
+  for (i = 0, sh = ef->shdr; i < ef->ehdr->e_shnum; i++, sh++)
+    {
+      if (sh->sh_type == SHT_SYMTAB)
+        {
+          ef->symtab = (Elf32_Sym *) (buf + sh->sh_offset);
+          ef->nsyms = sh->sh_size / sh->sh_entsize;
+          continue;
+        }
+
+      if (sh->sh_type == SHT_STRTAB)
+        {
+          if (!strcmp(".strtab", ef->shstring + sh->sh_name))
+            {
+              ef->string = buf + sh->sh_offset;
+            }
+        }
+    }
+
+  return ef;
+}
+
+static void *create_image(struct elf_file *elf, int core, char *savename,
+                         int *image_size)
+{
+  char *img;
+  struct spk_header *header;
+  struct spk_prog_info *pi;
+  Elf32_Phdr *ph;
+  Elf32_Sym *sym;
+  char *name;
+  int snlen;
+  int nphs, psize, imgsize;
+  int i;
+  int j;
+  uint32_t offset;
+  uint32_t sp;
+
+  snlen = alignup(strlen(savename) + 1, 16);
+
+  nphs = 0;
+  psize = 0;
+  for (i = 0, ph = elf->phdr; i < elf->ehdr->e_phnum; i++, ph++)
+    {
+      if (ph->p_type != PT_LOAD || ph->p_filesz == 0)
+        {
+          continue;
+        }
+
+      nphs++;
+      psize += alignup(ph->p_filesz, 16);
+    }
+
+  imgsize = sizeof(*header) + snlen + (nphs * 16) + psize;
+
+  img = (char *)malloc(imgsize + 32);
+  if (!img)
+    {
+      return NULL;
+    }
+
+  *image_size = imgsize;
+  sym = elf->symtab;
+  name = elf->string;
+  sp = 0;
+
+  for (j = 0; j < elf->nsyms; j++, sym++)
+    {
+      if (!strcmp("__stack", name + sym->st_name))
+        {
+          sp = sym->st_value;
+        }
+    }
+
+  memset(img, 0, imgsize);
+
+  header = (struct spk_header *)img;
+  header->magic[0] = 0xef;
+  header->magic[1] = 'M';
+  header->magic[2] = 'O';
+  header->magic[3] = 'D';
+  header->cpu = core;
+
+  header->entry = elf->ehdr->e_entry;
+  header->stack = sp;
+  header->core = core;
+
+  header->binaries = nphs;
+  header->phoffs = sizeof(*header) + snlen;
+  header->mode = 0777;
+
+  strncpy(img + sizeof(*header), savename, 63);
+
+  ph = elf->phdr;
+  pi = (struct spk_prog_info *)(img + header->phoffs);
+  offset = ((char *)pi - img) + (nphs * sizeof(*pi));
+  for (i = 0; i < elf->ehdr->e_phnum; i++, ph++)
+    {
+      if (ph->p_type != PT_LOAD || ph->p_filesz == 0)
+        continue;
+      pi->load_address = ph->p_paddr;
+      pi->offset = offset;
+      pi->size = alignup(ph->p_filesz, 16);     /* need 16 bytes align for
+                                                 * decryption */
+      pi->memsize = ph->p_memsz;
+
+      memcpy(img + pi->offset, elf->data + ph->p_offset, ph->p_filesz);
+
+      offset += alignup(ph->p_filesz, 16);
+      pi++;
+    }
+
+  return img;
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+int main(int argc, char **argv)
+{
+  struct args *args;
+  struct elf_file *elf;
+  struct cipher *c;
+  uint8_t *spkimage;
+  int size = 0;
+  FILE *fp;
+  char footer[16];
+
+  args = parse_args(argc, argv);
+
+  elf = load_elf(args->elffile);
+  if (!elf)
+    {
+      fprintf(stderr, "Loading ELF %s failure.\n", args->elffile);
+      exit(EXIT_FAILURE);
+    }
+
+  spkimage = create_image(elf, args->core, args->savename, &size);
+  if(elf->data) {
+      free(elf->data);
+  }
+  free(elf);
+
+
+  c = cipher_init(vmk, NULL);
+  cipher_calc_cmac(c, spkimage, size, (uint8_t *) spkimage + size);
+  cipher_deinit(c);
+
+  size += 16;                   /* Extend CMAC size */
+
+  snprintf(footer, 16, "MKSPK_BN_HOOTER");
+  footer[15] = '\0';
+
+  fp = fopen(args->outputfile, "wb");
+  if (!fp)
+    {
+      fprintf(stderr, "Output file open error.\n");
+      free(spkimage);
+      exit(EXIT_FAILURE);
+    }
+
+  fwrite(spkimage, size, 1, fp);
+  fwrite(footer, 16, 1, fp);
+
+  fclose(fp);
+
+  printf("File %s is successfully created.\n", args->outputfile);
+  free(args->outputfile);
+
+  memset(spkimage, 0, size);
+  free(spkimage);
+
+  exit(EXIT_SUCCESS);
+}