diff options
Diffstat (limited to 'dtc.c')
| -rw-r--r-- | dtc.c | 17 |
1 files changed, 16 insertions, 1 deletions
@@ -30,8 +30,14 @@ int quiet; /* Level of quietness */ int reservenum; /* Number of memory reservation slots */ int minsize; /* Minimum blob size */ int padsize; /* Additional padding to blob */ +int alignsize; /* Additional padding to blob accroding to the alignsize */ int phandle_format = PHANDLE_BOTH; /* Use linux,phandle or phandle properties */ +static int is_power_of_2(int x) +{ + return (x > 0) && ((x & (x - 1)) == 0); +} + static void fill_fullpaths(struct node *tree, const char *prefix) { struct node *child; @@ -53,7 +59,7 @@ static void fill_fullpaths(struct node *tree, const char *prefix) #define FDT_VERSION(version) _FDT_VERSION(version) #define _FDT_VERSION(version) #version static const char usage_synopsis[] = "dtc [options] <input file>"; -static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:fb:i:H:sW:E:hv"; +static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:a:fb:i:H:sW:E:hv"; static struct option const usage_long_opts[] = { {"quiet", no_argument, NULL, 'q'}, {"in-format", a_argument, NULL, 'I'}, @@ -64,6 +70,7 @@ static struct option const usage_long_opts[] = { {"reserve", a_argument, NULL, 'R'}, {"space", a_argument, NULL, 'S'}, {"pad", a_argument, NULL, 'p'}, + {"align", a_argument, NULL, 'a'}, {"boot-cpu", a_argument, NULL, 'b'}, {"force", no_argument, NULL, 'f'}, {"include", a_argument, NULL, 'i'}, @@ -91,6 +98,7 @@ static const char * const usage_opts_help[] = { "\n\tMake space for <number> reserve map entries (for dtb and asm output)", "\n\tMake the blob at least <bytes> long (extra space)", "\n\tAdd padding to the blob of <bytes> long (extra space)", + "\n\tMake the blob align to the <bytes> (extra space)", "\n\tSet the physical boot cpu", "\n\tTry to produce output even if the input tree has errors", "\n\tAdd a path to search for include files", @@ -169,6 +177,7 @@ int main(int argc, char *argv[]) reservenum = 0; minsize = 0; padsize = 0; + alignsize = 0; while ((opt = util_getopt_long()) != EOF) { switch (opt) { @@ -196,6 +205,12 @@ int main(int argc, char *argv[]) case 'p': padsize = strtol(optarg, NULL, 0); break; + case 'a': + alignsize = strtol(optarg, NULL, 0); + if (!is_power_of_2(alignsize)) + die("Invalid argument \"%d\" to -a option\n", + optarg); + break; case 'f': force = true; break; |