Das U-Boot: Universal Boot Loader

diff --git a/tools/gdb/astest.c b/tools/gdb/astest.c
new file mode 100644 (file)
index 0000000..8c8ed28
--- /dev/null
+++ b/tools/gdb/astest.c
@@ -0,0 +1,103 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <bfd.h>
+#include "error.h"
+
+int verbose = 0;
+
+void
+process_section(bfd *abfd, asection *sect, PTR obj)
+{
+    printf("Section '%s':\n", sect->name);
+
+    printf("\tindex=%d, flags=%x\n", sect->index, sect->flags);
+
+#if 0
+    printf("\tuser_set_vma=%u, reloc_done=%u, linker_mark=%u, gc_mark=%u\n",
+       (unsigned long)sect->user_set_vma, (unsigned long)sect->reloc_done,
+       (unsigned long)sect->linker_mark, (unsigned long)sect->gc_mark);
+#else
+    printf("\tuser_set_vma=%u, reloc_done=%u\n",
+       (unsigned int)sect->user_set_vma, (unsigned int)sect->reloc_done);
+#endif
+
+    printf("\tvma=%08lx, lma=%08lx\n",
+       (unsigned long)sect->vma, (unsigned long)sect->lma);
+
+    printf("\tcooked_size=%ld, raw_size=%ld, output_offset=%ld\n",
+       (long)sect->_cooked_size, (long)sect->_raw_size,
+       (long)sect->output_offset);
+
+    printf("\talignment_power=%d, reloc_count=%d, filepos=%ld\n",
+       sect->alignment_power, sect->reloc_count, sect->filepos);
+
+    printf("\trel_filepos=%ld, line_filepos=%ld, lineno_count=%d\n",
+       sect->rel_filepos, sect->line_filepos, sect->lineno_count);
+
+    printf("\tmoving_line_filepos=%ld, target_index=%d\n",
+       sect->moving_line_filepos, sect->target_index);
+}
+
+int
+main(int ac, char **av)
+{
+    int c, ifd;
+    char *ifn;
+    bfd *bfdp;
+
+    if ((pname = strrchr(av[0], '/')) == NULL)
+       pname = av[0];
+    else
+       pname++;
+
+    while ((c = getopt(ac, av, "v")) != EOF)
+       switch (c) {
+
+       case 'v':
+           verbose = 1;
+           break;
+
+       default:
+       usage:
+           fprintf(stderr, "Usage: %s [-v] imagefile\n", pname);
+           exit(1);
+       }
+    if (optind != ac - 1)
+       goto usage;
+
+    ifn = av[optind];
+
+    if (verbose)
+       fprintf(stderr, "Opening file...\n");
+
+    if ((ifd = open(ifn, O_RDONLY)) < 0)
+       Perror("can't open image file '%s'", ifn);
+
+    if ((bfdp = bfd_fdopenr(ifn, "elf32-powerpc", ifd)) == NULL) {
+       bfd_perror(ifn);
+       close(ifd);
+       Error("bfd_fdopenr of file '%s' failed", ifn);
+    }
+    bfdp->cacheable = true;
+
+    if (!bfd_check_format(bfdp, bfd_object) ||
+      (bfd_get_file_flags(bfdp) & EXEC_P) == 0) {
+       bfd_close(bfdp);
+       Error("file '%s' is not an executable object file (%s,0x%x)", ifn,
+           bfd_format_string(bfd_get_format(bfdp)), bfd_get_file_flags(bfdp));
+    }
+
+    printf("file '%s' is type '%s'...\n", ifn, bfd_get_target(bfdp));
+
+    bfd_map_over_sections(bfdp, process_section, NULL);;
+
+    bfd_close(bfdp);
+
+    if (verbose)
+       fprintf(stderr, "Done.\n");
+
+    return (0);
+}

diff --git a/tools/img2srec.c b/tools/img2srec.c
new file mode 100644 (file)
index 0000000..330ae02
--- /dev/null
+++ b/tools/img2srec.c
@@ -0,0 +1,413 @@
+/*************************************************************************
+|  COPYRIGHT (c) 2000 BY ABATRON AG
+|*************************************************************************
+|
+|  PROJECT NAME: Linux Image to S-record Conversion Utility
+|  FILENAME    : img2srec.c
+|
+|  COMPILER    : GCC
+|
+|  TARGET OS   : LINUX / UNIX
+|  TARGET HW   : -
+|
+|  PROGRAMMER  : Abatron / RD
+|  CREATION    : 07.07.00
+|
+|*************************************************************************
+|
+|  DESCRIPTION :
+|
+|  Utility to convert a Linux Boot Image to S-record:
+|  ==================================================
+|
+|  This command line utility can be used to convert a Linux boot image
+|  (zimage.initrd) to S-Record format used for flash programming.
+|  This conversion takes care of the special sections "IMAGE" and INITRD".
+|
+|  img2srec [-o offset] image > image.srec
+|
+|
+|  Build the utility:
+|  ==================
+|
+|  To build the utility use GCC as follows:
+|
+|  gcc img2srec.c -o img2srec
+|
+|
+|*************************************************************************
+|
+|
+|  UPDATES     :
+|
+|  DATE      NAME  CHANGES
+|  -----------------------------------------------------------
+|  Latest update
+|
+|  07.07.00  aba   Initial release
+|
+|*************************************************************************/
+
+/*************************************************************************
+|  INCLUDES
+|*************************************************************************/
+
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+#include <elf.h>
+#include <unistd.h>
+#include <errno.h>
+
+extern int errno;
+
+/*************************************************************************
+|  DEFINES
+|*************************************************************************/
+
+#define FALSE           0
+#define TRUE            1
+
+/*************************************************************************
+|  MACROS
+|*************************************************************************/
+
+/*************************************************************************
+|  TYPEDEFS
+|*************************************************************************/
+
+typedef uint8_t   CHAR;
+typedef uint8_t   BYTE;
+typedef uint16_t  WORD;
+typedef uint32_t  DWORD;
+typedef int       BOOL;
+
+/*************************************************************************
+|  LOCALS
+|*************************************************************************/
+
+/*************************************************************************
+|  PROTOTYPES
+|*************************************************************************/
+
+static char *ExtractHex(DWORD *value, char *getPtr);
+static char *ExtractDecimal(DWORD *value, char *getPtr);
+static void ExtractNumber(DWORD *value, char *getPtr);
+static BYTE *ExtractWord(WORD *value, BYTE *buffer);
+static BYTE *ExtractLong(DWORD *value, BYTE *buffer);
+static BYTE *ExtractBlock(WORD count, BYTE *data, BYTE *buffer);
+static char *WriteHex(char *pa, BYTE value, WORD *pCheckSum);
+static char *BuildSRecord(char *pa, WORD sType, DWORD addr,
+                         const BYTE *data, int nCount);
+static void ConvertELF(char *fileName, DWORD loadOffset);
+int main(int argc, char *argv[]);
+
+/*************************************************************************
+|  FUNCTIONS
+|*************************************************************************/
+
+static char* ExtractHex (DWORD* value,  char* getPtr)
+{
+  DWORD num;
+  DWORD digit;
+  BYTE  c;
+
+  while (*getPtr == ' ') getPtr++;
+  num = 0;
+  for (;;) {
+    c = *getPtr;
+    if      ((c >= '0') && (c <= '9')) digit = (DWORD)(c - '0');
+    else if ((c >= 'A') && (c <= 'F')) digit = (DWORD)(c - 'A' + 10);
+    else if ((c >= 'a') && (c <= 'f')) digit = (DWORD)(c - 'a' + 10);
+    else break;
+    num <<= 4;
+    num += digit;
+    getPtr++;
+  } /* for */
+  *value = num;
+  return getPtr;
+} /* ExtractHex */
+
+static char* ExtractDecimal (DWORD* value,  char* getPtr)
+{
+  DWORD num;
+  DWORD digit;
+  BYTE  c;
+
+  while (*getPtr == ' ') getPtr++;
+  num = 0;
+  for (;;) {
+    c = *getPtr;
+    if      ((c >= '0') && (c <= '9')) digit = (DWORD)(c - '0');
+    else break;
+    num *= 10;
+    num += digit;
+    getPtr++;
+  } /* for */
+  *value = num;
+  return getPtr;
+} /* ExtractDecimal */
+
+
+static void ExtractNumber (DWORD* value,  char* getPtr)
+{
+  BOOL  neg = FALSE;;
+
+  while (*getPtr == ' ') getPtr++;
+  if (*getPtr == '-') {
+    neg = TRUE;
+    getPtr++;
+  } /* if */
+  if ((*getPtr == '0') && ((*(getPtr+1) == 'x') || (*(getPtr+1) == 'X'))) {
+    getPtr +=2;
+    (void)ExtractHex(value, getPtr);
+  } /* if */
+  else {
+    (void)ExtractDecimal(value, getPtr);
+  } /* else */
+  if (neg) *value = -(*value);
+} /* ExtractNumber */
+
+
+static BYTE* ExtractWord(WORD* value, BYTE* buffer)
+{
+  WORD x;
+  x = (WORD)*buffer++;
+  x = (x<<8) + (WORD)*buffer++;
+  *value = x;
+  return buffer;
+} /* ExtractWord */
+
+
+static BYTE* ExtractLong(DWORD* value, BYTE* buffer)
+{
+  DWORD x;
+  x = (DWORD)*buffer++;
+  x = (x<<8) + (DWORD)*buffer++;
+  x = (x<<8) + (DWORD)*buffer++;
+  x = (x<<8) + (DWORD)*buffer++;
+  *value = x;
+  return buffer;
+} /* ExtractLong */
+
+
+static BYTE* ExtractBlock(WORD count, BYTE* data, BYTE* buffer)
+{
+  while (count--) *data++ = *buffer++;
+  return buffer;
+} /* ExtractBlock */
+
+
+static char* WriteHex(char* pa, BYTE value, WORD* pCheckSum)
+{
+  WORD  temp;
+
+  static  char ByteToHex[] = "0123456789ABCDEF";
+
+  *pCheckSum += value;
+  temp  = value / 16;
+  *pa++ = ByteToHex[temp];
+  temp  = value % 16;
+  *pa++ = ByteToHex[temp];
+  return pa;
+}
+
+
+static char* BuildSRecord(char* pa, WORD sType, DWORD addr,
+                         const BYTE* data, int nCount)
+{
+  WORD  addrLen;
+  WORD  sRLen;
+  WORD  checkSum;
+  WORD  i;
+
+  switch (sType) {
+  case 0:
+  case 1:
+  case 9:
+    addrLen = 2;
+    break;
+  case 2:
+  case 8:
+    addrLen = 3;
+    break;
+  case 3:
+  case 7:
+    addrLen = 4;
+    break;
+  default:
+    return pa;
+  } /* switch */
+
+  *pa++ = 'S';
+  *pa++ = (char)(sType + '0');
+  sRLen = addrLen + nCount + 1;
+  checkSum = 0;
+  pa = WriteHex(pa, (BYTE)sRLen, &checkSum);
+
+  /* Write address field */
+  for (i = 1; i <= addrLen; i++) {
+    pa = WriteHex(pa, (BYTE)(addr >> (8 * (addrLen - i))), &checkSum);
+  } /* for */
+
+  /* Write code/data fields */
+  for (i = 0; i < nCount; i++) {
+    pa = WriteHex(pa, *data++, &checkSum);
+  } /* for */
+
+  /* Write checksum field */
+  checkSum = ~checkSum;
+  pa = WriteHex(pa, (BYTE)checkSum, &checkSum);
+  *pa++ = '\0';
+  return pa;
+}
+
+
+static void ConvertELF(char* fileName, DWORD loadOffset)
+{
+  FILE*         file;
+  int           i;
+  int           rxCount;
+  BYTE          rxBlock[1024];
+  DWORD         loadSize;
+  DWORD         firstAddr;
+  DWORD         loadAddr;
+  DWORD         loadDiff = 0;
+  Elf32_Ehdr    elfHeader;
+  Elf32_Shdr    sectHeader[32];
+  BYTE*         getPtr;
+  char          srecLine[128];
+  char         *hdr_name;
+
+
+  /* open file */
+  if ((file = fopen(fileName,"rb")) == NULL) {
+    fprintf (stderr, "Can't open %s: %s\n", fileName, strerror(errno));
+    return;
+  } /* if */
+
+  /* read ELF header */
+  rxCount = fread(rxBlock, 1, sizeof elfHeader, file);
+  getPtr = ExtractBlock(sizeof elfHeader.e_ident, elfHeader.e_ident, rxBlock);
+  getPtr = ExtractWord(&elfHeader.e_type, getPtr);
+  getPtr = ExtractWord(&elfHeader.e_machine, getPtr);
+  getPtr = ExtractLong((DWORD *)&elfHeader.e_version, getPtr);
+  getPtr = ExtractLong((DWORD *)&elfHeader.e_entry, getPtr);
+  getPtr = ExtractLong((DWORD *)&elfHeader.e_phoff, getPtr);
+  getPtr = ExtractLong((DWORD *)&elfHeader.e_shoff, getPtr);
+  getPtr = ExtractLong((DWORD *)&elfHeader.e_flags, getPtr);
+  getPtr = ExtractWord(&elfHeader.e_ehsize, getPtr);
+  getPtr = ExtractWord(&elfHeader.e_phentsize, getPtr);
+  getPtr = ExtractWord(&elfHeader.e_phnum, getPtr);
+  getPtr = ExtractWord(&elfHeader.e_shentsize, getPtr);
+  getPtr = ExtractWord(&elfHeader.e_shnum, getPtr);
+  getPtr = ExtractWord(&elfHeader.e_shstrndx, getPtr);
+  if (    (rxCount              != sizeof elfHeader)
+       || (elfHeader.e_ident[0] != ELFMAG0)
+       || (elfHeader.e_ident[1] != ELFMAG1)
+       || (elfHeader.e_ident[2] != ELFMAG2)
+       || (elfHeader.e_ident[3] != ELFMAG3)
+       || (elfHeader.e_type     != ET_EXEC)
+     ) {
+    fclose(file);
+    fprintf (stderr, "*** illegal file format\n");
+    return;
+  } /* if */
+
+  /* read all section headers */
+  fseek(file, elfHeader.e_shoff, SEEK_SET);
+  for (i = 0; i < elfHeader.e_shnum; i++) {
+    rxCount = fread(rxBlock, 1, sizeof sectHeader[0], file);
+    getPtr = ExtractLong((DWORD *)&sectHeader[i].sh_name, rxBlock);
+    getPtr = ExtractLong((DWORD *)&sectHeader[i].sh_type, getPtr);
+    getPtr = ExtractLong((DWORD *)&sectHeader[i].sh_flags, getPtr);
+    getPtr = ExtractLong((DWORD *)&sectHeader[i].sh_addr, getPtr);
+    getPtr = ExtractLong((DWORD *)&sectHeader[i].sh_offset, getPtr);
+    getPtr = ExtractLong((DWORD *)&sectHeader[i].sh_size, getPtr);
+    getPtr = ExtractLong((DWORD *)&sectHeader[i].sh_link, getPtr);
+    getPtr = ExtractLong((DWORD *)&sectHeader[i].sh_info, getPtr);
+    getPtr = ExtractLong((DWORD *)&sectHeader[i].sh_addralign, getPtr);
+    getPtr = ExtractLong((DWORD *)&sectHeader[i].sh_entsize, getPtr);
+    if (rxCount != sizeof sectHeader[0]) {
+      fclose(file);
+      fprintf (stderr, "*** illegal file format\n");
+      return;
+    } /* if */
+  } /* for */
+
+  if ((hdr_name = strrchr(fileName, '/')) == NULL) {
+    hdr_name = fileName;
+  } else {
+    ++hdr_name;
+  }
+  /* write start record */
+  (void)BuildSRecord(srecLine, 0, 0, (BYTE *)hdr_name, strlen(hdr_name));
+  printf("%s\r\n",srecLine);
+
+  /* write data records */
+  firstAddr = ~0;
+  loadAddr  =  0;
+  for (i = 0; i < elfHeader.e_shnum; i++) {
+    if (    (sectHeader[i].sh_type == SHT_PROGBITS)
+         && (sectHeader[i].sh_size != 0)
+         ) {
+      loadSize = sectHeader[i].sh_size;
+      if (sectHeader[i].sh_flags != 0) {
+        loadAddr = sectHeader[i].sh_addr;
+        loadDiff = loadAddr - sectHeader[i].sh_offset;
+      } /* if */
+      else {
+        loadAddr = sectHeader[i].sh_offset + loadDiff;
+      } /* else */
+
+      if (loadAddr < firstAddr)
+        firstAddr = loadAddr;
+
+      /* build s-records */
+      loadSize = sectHeader[i].sh_size;
+      fseek(file, sectHeader[i].sh_offset, SEEK_SET);
+      while (loadSize) {
+        rxCount = fread(rxBlock, 1, (loadSize > 32) ? 32 : loadSize, file);
+        if (rxCount < 0) {
+          fclose(file);
+          fprintf (stderr, "*** illegal file format\n");
+        return;
+        } /* if */
+        (void)BuildSRecord(srecLine, 3, loadAddr + loadOffset, rxBlock, rxCount);
+        loadSize -= rxCount;
+        loadAddr += rxCount;
+        printf("%s\r\n",srecLine);
+      } /* while */
+    } /* if */
+  } /* for */
+
+  /* add end record */
+  (void)BuildSRecord(srecLine, 7, firstAddr + loadOffset, 0, 0);
+  printf("%s\r\n",srecLine);
+  fclose(file);
+} /* ConvertELF */
+
+
+/*************************************************************************
+|  MAIN
+|*************************************************************************/
+
+int main( int argc, char *argv[ ])
+{
+  DWORD offset;
+
+  if (argc == 2) {
+    ConvertELF(argv[1], 0);
+  } /* if */
+  else if ((argc == 4) && (strcmp(argv[1], "-o") == 0)) {
+    ExtractNumber(&offset, argv[2]);
+    ConvertELF(argv[3], offset);
+  } /* if */
+  else {
+    fprintf (stderr, "Usage: img2srec [-o offset] <image>\n");
+  } /* if */
+
+  return 0;
+} /* main */