int exfat_truncate(struct exfat* ef, struct exfat_node* node, uint64_t size)
{
uint32_t c1 = bytes2clusters(ef, node->size);
uint32_t c2 = bytes2clusters(ef, size);
int rc = 0;
if (node->references == 0 && node->parent)
exfat_bug("no references, node changes can be lost");
if (node->size == size)
return 0;
if (c1 < c2)
rc = grow_file(ef, node, c1, c2 - c1);
else if (c1 > c2)
rc = shrink_file(ef, node, c1, c1 - c2);
if (rc != 0)
return rc;
rc = erase_range(ef, node, node->size, size);
if (rc != 0)
return rc;
exfat_update_mtime(node);
node->size = size;
node->flags |= EXFAT_ATTRIB_DIRTY;
return 0;
}
static void set_ecc(uint32_t start, uint32_t size)
{
uint32_t i = start + 8;
uint8_t ecc = 0;
printf("About to erase and set ECC bits in region 0x%08x to 0x%08x\n", start, start + size);
check_confirm();
erase_range(start, size, true);
printf("Programming ECC bits...\n");
progress_init(size);
while (i < start + size) {
blocklevel_write(bl, i, &ecc, sizeof(ecc));
i += 9;
progress_tick(i - start);
}
progress_end();
}
int main(int argc, char *argv[])
{
const char *pname = argv[0];
uint32_t address = 0, read_size = 0, write_size = 0;
uint32_t erase_start = 0, erase_size = 0;
bool erase = false, do_clear = false;
bool program = false, erase_all = false, info = false, do_read = false;
bool enable_4B = false, disable_4B = false;
bool show_help = false, show_version = false;
bool no_action = false, tune = false;
char *write_file = NULL, *read_file = NULL, *part_name = NULL;
bool ffs_toc_seen = false;
int rc;
while(1) {
static struct option long_opts[] = {
{"address", required_argument, NULL, 'a'},
{"size", required_argument, NULL, 's'},
{"partition", required_argument, NULL, 'P'},
{"bmc", no_argument, NULL, 'b'},
{"enable-4B", no_argument, NULL, '4'},
{"disable-4B", no_argument, NULL, '3'},
{"read", required_argument, NULL, 'r'},
{"erase-all", no_argument, NULL, 'E'},
{"erase", no_argument, NULL, 'e'},
{"program", required_argument, NULL, 'p'},
{"force", no_argument, NULL, 'f'},
{"info", no_argument, NULL, 'i'},
{"tune", no_argument, NULL, 't'},
{"dummy", no_argument, NULL, 'd'},
{"help", no_argument, NULL, 'h'},
{"version", no_argument, NULL, 'v'},
{"debug", no_argument, NULL, 'g'},
{"side", required_argument, NULL, 'S'},
{"toc", required_argument, NULL, 'T'},
{"clear", no_argument, NULL, 'c'}
};
int c, oidx = 0;
c = getopt_long(argc, argv, "a:s:P:r:43Eep:fdihvbtgS:T:c",
long_opts, &oidx);
if (c == EOF)
break;
switch(c) {
case 'a':
address = strtoul(optarg, NULL, 0);
break;
case 's':
read_size = write_size = strtoul(optarg, NULL, 0);
break;
case 'P':
part_name = strdup(optarg);
break;
case '4':
enable_4B = true;
break;
case '3':
disable_4B = true;
break;
case 'r':
do_read = true;
read_file = strdup(optarg);
break;
case 'E':
erase_all = erase = true;
break;
case 'e':
erase = true;
break;
case 'p':
program = true;
write_file = strdup(optarg);
break;
case 'f':
must_confirm = false;
break;
case 'd':
must_confirm = false;
dummy_run = true;
break;
case 'i':
info = true;
break;
case 'b':
bmc_flash = true;
break;
case 't':
tune = true;
break;
case 'v':
show_version = true;
break;
case 'h':
show_help = show_version = true;
break;
case 'g':
libflash_debug = true;
break;
case 'S':
flash_side = atoi(optarg);
break;
case 'T':
ffs_toc_seen = true;
ffs_toc = strtoul(optarg, NULL, 0);
break;
case 'c':
do_clear = true;
break;
default:
exit(1);
}
}
/* Check if we need to access the flash at all (which will
* also tune them as a side effect
*/
no_action = !erase && !program && !info && !do_read &&
!enable_4B && !disable_4B && !tune && !do_clear;
/* Nothing to do, if we didn't already, print usage */
if (no_action && !show_version)
show_help = show_version = true;
if (show_version)
print_version();
if (show_help)
print_help(pname);
if (no_action)
return 0;
/* --enable-4B and --disable-4B are mutually exclusive */
if (enable_4B && disable_4B) {
fprintf(stderr, "--enable-4B and --disable-4B are mutually"
" exclusive !\n");
exit(1);
}
/* 4B not supported on BMC flash */
if (enable_4B && bmc_flash) {
fprintf(stderr, "--enable-4B not supported on BMC flash !\n");
exit(1);
}
/* partitions not supported on BMC flash */
if (part_name && bmc_flash) {
fprintf(stderr, "--partition not supported on BMC flash !\n");
exit(1);
}
/* part-name and erase-all make no sense together */
if (part_name && erase_all) {
fprintf(stderr, "--partition and --erase-all are mutually"
" exclusive !\n");
exit(1);
}
/* Read command should always come with a file */
if (do_read && !read_file) {
fprintf(stderr, "Read with no file specified !\n");
exit(1);
}
/* Program command should always come with a file */
if (program && !write_file) {
fprintf(stderr, "Program with no file specified !\n");
exit(1);
}
/* If both partition and address specified, error out */
if (address && part_name) {
fprintf(stderr, "Specify partition or address, not both !\n");
exit(1);
}
if (do_clear && !part_name) {
fprintf(stderr, "--clear only supported on a partition name\n");
exit(1);
}
/* Explicitly only support two sides */
if (flash_side != 0 && flash_side != 1) {
fprintf(stderr, "Unexpected value for --side '%d'\n", flash_side);
exit(1);
}
if (ffs_toc_seen && flash_side) {
fprintf(stderr, "--toc and --side are exclusive");
exit(1);
}
/* If file specified but not size, get size from file
*/
if (write_file && !write_size) {
struct stat stbuf;
if (stat(write_file, &stbuf)) {
perror("Failed to get file size");
exit(1);
}
write_size = stbuf.st_size;
}
if (bmc_flash) {
if (arch_flash_bmc(NULL, 1) == -1) {
fprintf(stderr, "Can't switch to BMC flash on this architecture\n");
exit(1);
}
}
if (arch_flash_init(&bl, NULL, true))
exit(1);
on_exit(exiting, NULL);
rc = blocklevel_get_info(bl, &fl_name,
&fl_total_size, &fl_erase_granule);
if (rc) {
fprintf(stderr, "Error %d getting flash info\n", rc);
exit(1);
}
/* If -t is passed, then print a nice message */
if (tune)
printf("Flash and controller tuned\n");
/* If read specified and no read_size, use flash size */
if (do_read && !read_size && !part_name)
read_size = fl_total_size;
/* We have a partition specified, grab the details */
if (part_name)
lookup_partition(part_name);
/* We have a partition, adjust read/write size if needed */
if (ffsh && ffs_index >= 0) {
uint32_t pstart, pmaxsz, pactsize;
bool ecc;
int rc;
rc = ffs_part_info(ffsh, ffs_index, NULL,
&pstart, &pmaxsz, &pactsize, &ecc);
if (rc) {
fprintf(stderr,"Failed to get partition info\n");
exit(1);
}
if (!ecc && do_clear) {
fprintf(stderr, "The partition on which to do --clear "
"does not have ECC, are you sure?\n");
check_confirm();
/* Still confirm later on */
must_confirm = true;
}
/* Read size is obtained from partition "actual" size */
if (!read_size)
read_size = pactsize;
/* Write size is max size of partition */
if (!write_size)
write_size = pmaxsz;
/* Crop write size to partition size */
if (write_size > pmaxsz) {
printf("WARNING: Size (%d bytes) larger than partition"
" (%d bytes), cropping to fit\n",
write_size, pmaxsz);
write_size = pmaxsz;
}
/* If erasing, check partition alignment */
if (erase && ((pstart | pmaxsz) & 0xfff)) {
fprintf(stderr,"Partition not aligned properly\n");
exit(1);
}
/* Set address */
address = pstart;
}
/* Align erase boundaries */
if (erase && !erase_all) {
uint32_t mask = 0xfff;
uint32_t erase_end;
/* Dummy size for erase, will be adjusted later */
if (!write_size)
write_size = 1;
erase_start = address & ~mask;
erase_end = ((address + write_size) + mask) & ~mask;
erase_size = erase_end - erase_start;
if (erase_start != address || erase_size != write_size)
fprintf(stderr, "WARNING: Erase region adjusted"
" to 0x%08x..0x%08x\n",
erase_start, erase_end);
}
/* Process commands */
if (enable_4B)
enable_4B_addresses();
if (disable_4B)
disable_4B_addresses();
if (info) {
/*
* Don't pass through modfied TOC value if the modification was done
* because of --size, but still respect if it came from --toc (we
* assume the user knows what they're doing in that case)
*/
print_flash_info(flash_side ? 0 : ffs_toc);
}
/* Unlock flash (PNOR only) */
if ((erase || program || do_clear) && !bmc_flash) {
need_relock = arch_flash_set_wrprotect(bl, false);
if (need_relock == -1) {
fprintf(stderr, "Architecture doesn't support write protection on flash\n");
need_relock = 0;
exit (1);
}
}
if (do_read)
do_read_file(read_file, address, read_size);
if (erase_all)
erase_chip();
else if (erase)
erase_range(erase_start, erase_size, program);
if (program)
program_file(write_file, address, write_size);
if (do_clear)
set_ecc(address, write_size);
return 0;
}
