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tornado/fw/ben/ben.c: accept optional byte address argument

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This commit is contained in:
Werner Almesberger 2012-12-05 13:25:25 -03:00
parent 3c343536b1
commit 4d09658036
1 changed files with 21 additions and 8 deletions
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29
tornado/fw/ben/ben.c
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@ -53,11 +53,11 @@ static void io_setup(void)
} }
static void read_block(void) static void read_block(int addr)
{ {
int i; int i;
if (!mmc_begin_read(0)) { if (!mmc_begin_read(addr)) {
fprintf(stderr, "mmc_begin_read failed\n"); fprintf(stderr, "mmc_begin_read failed\n");
exit(1); exit(1);
} }
@ -67,11 +67,11 @@ static void read_block(void)
} }
static void write_block(void) static void write_block(int addr)
{ {
int i; int i;
if (!mmc_begin_write(0)) { if (!mmc_begin_write(addr)) {
fprintf(stderr, "mmc_begin_write failed\n"); fprintf(stderr, "mmc_begin_write failed\n");
exit(1); exit(1);
} }
@ -86,7 +86,7 @@ static void write_block(void)
static void usage(const char *name) static void usage(const char *name)
{ {
fprintf(stderr, "usage: %s [-w]\n", name); fprintf(stderr, "usage: %s [-w] [byte_addr]\n", name);
exit(1); exit(1);
} }
@ -94,7 +94,9 @@ static void usage(const char *name)
int main(int argc, char **argv) int main(int argc, char **argv)
{ {
int do_read = 1; int do_read = 1;
int addr;
int c; int c;
char *end;
io_setup(); io_setup();
@ -111,13 +113,24 @@ int main(int argc, char **argv)
default: default:
usage(*argv); usage(*argv);
} }
if (optind != argc)
switch (argc-optind) {
case 0:
addr = 0;
break;
case 1:
addr = strtoul(argv[optind], &end, 0);
if (*end)
usage(*argv);
break;
default:
usage(*argv); usage(*argv);
}
if (do_read) if (do_read)
read_block(); read_block(addr);
else else
write_block(); write_block(addr);
return 0; return 0;
} }