forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
289 lines
6.7 KiB
289 lines
6.7 KiB
// SPDX-License-Identifier: GPL-2.0-only |
|
/* |
|
* Parser/loader for IHEX formatted data. |
|
* |
|
* Copyright © 2008 David Woodhouse <[email protected]> |
|
* Copyright © 2005 Jan Harkes <[email protected]> |
|
*/ |
|
|
|
#include <stdint.h> |
|
#include <arpa/inet.h> |
|
#include <stdio.h> |
|
#include <errno.h> |
|
#include <sys/types.h> |
|
#include <sys/stat.h> |
|
#include <sys/mman.h> |
|
#include <fcntl.h> |
|
#include <string.h> |
|
#include <unistd.h> |
|
#include <stdlib.h> |
|
#define _GNU_SOURCE |
|
#include <getopt.h> |
|
|
|
|
|
#define __ALIGN_KERNEL_MASK(x, mask) (((x) + (mask)) & ~(mask)) |
|
#define __ALIGN_KERNEL(x, a) __ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1) |
|
#define ALIGN(x, a) __ALIGN_KERNEL((x), (a)) |
|
|
|
struct ihex_binrec { |
|
struct ihex_binrec *next; /* not part of the real data structure */ |
|
uint32_t addr; |
|
uint16_t len; |
|
uint8_t data[]; |
|
}; |
|
|
|
/** |
|
* nybble/hex are little helpers to parse hexadecimal numbers to a byte value |
|
**/ |
|
static uint8_t nybble(const uint8_t n) |
|
{ |
|
if (n >= '0' && n <= '9') return n - '0'; |
|
else if (n >= 'A' && n <= 'F') return n - ('A' - 10); |
|
else if (n >= 'a' && n <= 'f') return n - ('a' - 10); |
|
return 0; |
|
} |
|
|
|
static uint8_t hex(const uint8_t *data, uint8_t *crc) |
|
{ |
|
uint8_t val = (nybble(data[0]) << 4) | nybble(data[1]); |
|
*crc += val; |
|
return val; |
|
} |
|
|
|
static int process_ihex(uint8_t *data, ssize_t size); |
|
static void file_record(struct ihex_binrec *record); |
|
static int output_records(int outfd); |
|
|
|
static int sort_records = 0; |
|
static int wide_records = 0; |
|
static int include_jump = 0; |
|
|
|
static int usage(void) |
|
{ |
|
fprintf(stderr, "ihex2fw: Convert ihex files into binary " |
|
"representation for use by Linux kernel\n"); |
|
fprintf(stderr, "usage: ihex2fw [<options>] <src.HEX> <dst.fw>\n"); |
|
fprintf(stderr, " -w: wide records (16-bit length)\n"); |
|
fprintf(stderr, " -s: sort records by address\n"); |
|
fprintf(stderr, " -j: include records for CS:IP/EIP address\n"); |
|
return 1; |
|
} |
|
|
|
int main(int argc, char **argv) |
|
{ |
|
int infd, outfd; |
|
struct stat st; |
|
uint8_t *data; |
|
int opt; |
|
|
|
while ((opt = getopt(argc, argv, "wsj")) != -1) { |
|
switch (opt) { |
|
case 'w': |
|
wide_records = 1; |
|
break; |
|
case 's': |
|
sort_records = 1; |
|
break; |
|
case 'j': |
|
include_jump = 1; |
|
break; |
|
default: |
|
return usage(); |
|
} |
|
} |
|
|
|
if (optind + 2 != argc) |
|
return usage(); |
|
|
|
if (!strcmp(argv[optind], "-")) |
|
infd = 0; |
|
else |
|
infd = open(argv[optind], O_RDONLY); |
|
if (infd == -1) { |
|
fprintf(stderr, "Failed to open source file: %s", |
|
strerror(errno)); |
|
return usage(); |
|
} |
|
if (fstat(infd, &st)) { |
|
perror("stat"); |
|
return 1; |
|
} |
|
data = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, infd, 0); |
|
if (data == MAP_FAILED) { |
|
perror("mmap"); |
|
return 1; |
|
} |
|
|
|
if (!strcmp(argv[optind+1], "-")) |
|
outfd = 1; |
|
else |
|
outfd = open(argv[optind+1], O_TRUNC|O_CREAT|O_WRONLY, 0644); |
|
if (outfd == -1) { |
|
fprintf(stderr, "Failed to open destination file: %s", |
|
strerror(errno)); |
|
return usage(); |
|
} |
|
if (process_ihex(data, st.st_size)) |
|
return 1; |
|
|
|
return output_records(outfd); |
|
} |
|
|
|
static int process_ihex(uint8_t *data, ssize_t size) |
|
{ |
|
struct ihex_binrec *record; |
|
size_t record_size; |
|
uint32_t offset = 0; |
|
uint32_t data32; |
|
uint8_t type, crc = 0, crcbyte = 0; |
|
int i, j; |
|
int line = 1; |
|
int len; |
|
|
|
i = 0; |
|
next_record: |
|
/* search for the start of record character */ |
|
while (i < size) { |
|
if (data[i] == '\n') line++; |
|
if (data[i++] == ':') break; |
|
} |
|
|
|
/* Minimum record length would be about 10 characters */ |
|
if (i + 10 > size) { |
|
fprintf(stderr, "Can't find valid record at line %d\n", line); |
|
return -EINVAL; |
|
} |
|
|
|
len = hex(data + i, &crc); i += 2; |
|
if (wide_records) { |
|
len <<= 8; |
|
len += hex(data + i, &crc); i += 2; |
|
} |
|
record_size = ALIGN(sizeof(*record) + len, 4); |
|
record = malloc(record_size); |
|
if (!record) { |
|
fprintf(stderr, "out of memory for records\n"); |
|
return -ENOMEM; |
|
} |
|
memset(record, 0, record_size); |
|
record->len = len; |
|
|
|
/* now check if we have enough data to read everything */ |
|
if (i + 8 + (record->len * 2) > size) { |
|
fprintf(stderr, "Not enough data to read complete record at line %d\n", |
|
line); |
|
return -EINVAL; |
|
} |
|
|
|
record->addr = hex(data + i, &crc) << 8; i += 2; |
|
record->addr |= hex(data + i, &crc); i += 2; |
|
type = hex(data + i, &crc); i += 2; |
|
|
|
for (j = 0; j < record->len; j++, i += 2) |
|
record->data[j] = hex(data + i, &crc); |
|
|
|
/* check CRC */ |
|
crcbyte = hex(data + i, &crc); i += 2; |
|
if (crc != 0) { |
|
fprintf(stderr, "CRC failure at line %d: got 0x%X, expected 0x%X\n", |
|
line, crcbyte, (unsigned char)(crcbyte-crc)); |
|
return -EINVAL; |
|
} |
|
|
|
/* Done reading the record */ |
|
switch (type) { |
|
case 0: |
|
/* old style EOF record? */ |
|
if (!record->len) |
|
break; |
|
|
|
record->addr += offset; |
|
file_record(record); |
|
goto next_record; |
|
|
|
case 1: /* End-Of-File Record */ |
|
if (record->addr || record->len) { |
|
fprintf(stderr, "Bad EOF record (type 01) format at line %d", |
|
line); |
|
return -EINVAL; |
|
} |
|
break; |
|
|
|
case 2: /* Extended Segment Address Record (HEX86) */ |
|
case 4: /* Extended Linear Address Record (HEX386) */ |
|
if (record->addr || record->len != 2) { |
|
fprintf(stderr, "Bad HEX86/HEX386 record (type %02X) at line %d\n", |
|
type, line); |
|
return -EINVAL; |
|
} |
|
|
|
/* We shouldn't really be using the offset for HEX86 because |
|
* the wraparound case is specified quite differently. */ |
|
offset = record->data[0] << 8 | record->data[1]; |
|
offset <<= (type == 2 ? 4 : 16); |
|
goto next_record; |
|
|
|
case 3: /* Start Segment Address Record */ |
|
case 5: /* Start Linear Address Record */ |
|
if (record->addr || record->len != 4) { |
|
fprintf(stderr, "Bad Start Address record (type %02X) at line %d\n", |
|
type, line); |
|
return -EINVAL; |
|
} |
|
|
|
memcpy(&data32, &record->data[0], sizeof(data32)); |
|
data32 = htonl(data32); |
|
memcpy(&record->data[0], &data32, sizeof(data32)); |
|
|
|
/* These records contain the CS/IP or EIP where execution |
|
* starts. If requested output this as a record. */ |
|
if (include_jump) |
|
file_record(record); |
|
goto next_record; |
|
|
|
default: |
|
fprintf(stderr, "Unknown record (type %02X)\n", type); |
|
return -EINVAL; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static struct ihex_binrec *records; |
|
|
|
static void file_record(struct ihex_binrec *record) |
|
{ |
|
struct ihex_binrec **p = &records; |
|
|
|
while ((*p) && (!sort_records || (*p)->addr < record->addr)) |
|
p = &((*p)->next); |
|
|
|
record->next = *p; |
|
*p = record; |
|
} |
|
|
|
static uint16_t ihex_binrec_size(struct ihex_binrec *p) |
|
{ |
|
return p->len + sizeof(p->addr) + sizeof(p->len); |
|
} |
|
|
|
static int output_records(int outfd) |
|
{ |
|
unsigned char zeroes[6] = {0, 0, 0, 0, 0, 0}; |
|
struct ihex_binrec *p = records; |
|
|
|
while (p) { |
|
uint16_t writelen = ALIGN(ihex_binrec_size(p), 4); |
|
|
|
p->addr = htonl(p->addr); |
|
p->len = htons(p->len); |
|
if (write(outfd, &p->addr, writelen) != writelen) |
|
return 1; |
|
p = p->next; |
|
} |
|
/* EOF record is zero length, since we don't bother to represent |
|
the type field in the binary version */ |
|
if (write(outfd, zeroes, 6) != 6) |
|
return 1; |
|
return 0; |
|
}
|
|
|