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u-boot/tools/img2srec.c
Mike Frysinger fd66066ee3 img2srec: use standard types 
The img2srec code creates a lot of typedefs with common names.  These
easily clash with system headers that include these typedefs (like mingw).

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-11-24 23:43:18 +01:00

373 lines
9.7 KiB
C
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/*************************************************************************
| 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 "os_support.h"
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <elf.h>
#include <unistd.h>
#include <errno.h>
/*************************************************************************
| FUNCTIONS
|*************************************************************************/
static char* ExtractHex (uint32_t* value, char* getPtr)
{
uint32_t num;
uint32_t digit;
uint8_t c;
while (*getPtr == ' ') getPtr++;
num = 0;
for (;;) {
c = *getPtr;
if ((c >= '0') && (c <= '9')) digit = (uint32_t)(c - '0');
else if ((c >= 'A') && (c <= 'F')) digit = (uint32_t)(c - 'A' + 10);
else if ((c >= 'a') && (c <= 'f')) digit = (uint32_t)(c - 'a' + 10);
else break;
num <<= 4;
num += digit;
getPtr++;
} /* for */
*value = num;
return getPtr;
} /* ExtractHex */
static char* ExtractDecimal (uint32_t* value, char* getPtr)
{
uint32_t num;
uint32_t digit;
uint8_t c;
while (*getPtr == ' ') getPtr++;
num = 0;
for (;;) {
c = *getPtr;
if ((c >= '0') && (c <= '9')) digit = (uint32_t)(c - '0');
else break;
num *= 10;
num += digit;
getPtr++;
} /* for */
*value = num;
return getPtr;
} /* ExtractDecimal */
static void ExtractNumber (uint32_t* 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 uint8_t* ExtractWord(uint16_t* value, uint8_t* buffer)
{
uint16_t x;
x = (uint16_t)*buffer++;
x = (x<<8) + (uint16_t)*buffer++;
*value = x;
return buffer;
} /* ExtractWord */
static uint8_t* ExtractLong(uint32_t* value, uint8_t* buffer)
{
uint32_t x;
x = (uint32_t)*buffer++;
x = (x<<8) + (uint32_t)*buffer++;
x = (x<<8) + (uint32_t)*buffer++;
x = (x<<8) + (uint32_t)*buffer++;
*value = x;
return buffer;
} /* ExtractLong */
static uint8_t* ExtractBlock(uint16_t count, uint8_t* data, uint8_t* buffer)
{
while (count--) *data++ = *buffer++;
return buffer;
} /* ExtractBlock */
static char* WriteHex(char* pa, uint8_t value, uint16_t* pCheckSum)
{
uint16_t 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, uint16_t sType, uint32_t addr,
const uint8_t* data, int nCount)
{
uint16_t addrLen;
uint16_t sRLen;
uint16_t checkSum;
uint16_t 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, (uint8_t)sRLen, &checkSum);
/* Write address field */
for (i = 1; i <= addrLen; i++) {
pa = WriteHex(pa, (uint8_t)(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, (uint8_t)checkSum, &checkSum);
*pa++ = '\0';
return pa;
}
static void ConvertELF(char* fileName, uint32_t loadOffset)
{
FILE* file;
int i;
int rxCount;
uint8_t rxBlock[1024];
uint32_t loadSize;
uint32_t firstAddr;
uint32_t loadAddr;
uint32_t loadDiff = 0;
Elf32_Ehdr elfHeader;
Elf32_Shdr sectHeader[32];
uint8_t* 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((uint32_t *)&elfHeader.e_version, getPtr);
getPtr = ExtractLong((uint32_t *)&elfHeader.e_entry, getPtr);
getPtr = ExtractLong((uint32_t *)&elfHeader.e_phoff, getPtr);
getPtr = ExtractLong((uint32_t *)&elfHeader.e_shoff, getPtr);
getPtr = ExtractLong((uint32_t *)&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((uint32_t *)&sectHeader[i].sh_name, rxBlock);
getPtr = ExtractLong((uint32_t *)&sectHeader[i].sh_type, getPtr);
getPtr = ExtractLong((uint32_t *)&sectHeader[i].sh_flags, getPtr);
getPtr = ExtractLong((uint32_t *)&sectHeader[i].sh_addr, getPtr);
getPtr = ExtractLong((uint32_t *)&sectHeader[i].sh_offset, getPtr);
getPtr = ExtractLong((uint32_t *)&sectHeader[i].sh_size, getPtr);
getPtr = ExtractLong((uint32_t *)&sectHeader[i].sh_link, getPtr);
getPtr = ExtractLong((uint32_t *)&sectHeader[i].sh_info, getPtr);
getPtr = ExtractLong((uint32_t *)&sectHeader[i].sh_addralign, getPtr);
getPtr = ExtractLong((uint32_t *)&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, (uint8_t *)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[ ])
{
uint32_t 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 */
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