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Add bin2pgd tool

This is used by the vendor's flashing tool. It's ROM image + option
ROM image appended (256 bytes).

Option ROM contains some flags and configuration data for the MCU.
Things like oscillator configuration, HW reset pin enable, data EEPROM
enable, etc.
master
Ondrej Jirman 12 months ago
parent
commit
0e4f426dfb
  1. 91
      bin2pgd.c

91
bin2pgd.c

@ -0,0 +1,91 @@ @@ -0,0 +1,91 @@
#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#include <inttypes.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <time.h>
#include <poll.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <sys/types.h>
#include <dirent.h>
#include <getopt.h>
static void syscall_error(int is_err, const char* fmt, ...)
{
va_list ap;
if (!is_err)
return;
fprintf(stderr, "ERROR: ");
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
fprintf(stderr, ": %s\n", strerror(errno));
exit(1);
}
static void error(const char* fmt, ...)
{
va_list ap;
fprintf(stderr, "ERROR: ");
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
fprintf(stderr, "\n");
exit(1);
}
int main(int ac, char* av[])
{
int fd, ret;
uint8_t rom[0x8100];
memset(rom, 0xff, sizeof rom);
fd = open(av[1], O_RDONLY);
syscall_error(fd < 0, "open(%s) failed", av[1]);
ssize_t len = read(fd, rom, 0x8000);
syscall_error(len < 0, "read failed");
close(fd);
if (len != 0x8000)
error("Invalid ROM file (%s) size (%d), must be 32768 bytes", av[1], (int)len);
uint16_t csum = 0;
for (int i = 0x0; i < 0x8000; i++)
csum += rom[i];
uint8_t* opts = rom + 0x8000;
opts[0] = 0xfc;
opts[1] = 0x39;
opts[2] = 0x01;
opts[120] = 0xdf;
opts[123] = 0x20;
opts[124] = csum;
opts[125] = csum >> 8;
opts[121] = 0x91 ^ opts[124];
opts[122] = 0x0b ^ opts[125];
opts[126] = 0x44; // IAP tool identifier (will be overwritten by bootloader to 0x49)
opts[127] = 0xaa;
fd = open(av[2], O_WRONLY | O_CREAT | O_TRUNC, 0666);
if (fd >= 0) {
ssize_t wr = write(fd, rom, 0x8100);
syscall_error(wr < 0, "write failed");
close(fd);
}
return 0;
}
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