tools/firmware-utils/ptgen option to use MB rounding

SVN-Revision: 33218

diff --git a/src/ptgen.c b/src/ptgen.c
index d94aabb5fcf139bb47ced1a534c9decd8b906688..0247fd0131cbd6b9899b94e017bcf2a6d0afa8bb 100644 (file)
--- a/src/ptgen.c
+++ b/src/ptgen.c
@@ -56,6 +56,7 @@ int verbose = 0;
 int active = 1;
 int heads = -1;
 int sectors = -1;
+int kb_align = 0;
 struct partinfo parts[4];
 char *filename = NULL;
 
@@ -117,6 +118,11 @@ static inline unsigned long round_to_cyl(long sect) {
        return sect + cyl_size - (sect % cyl_size); 
 }
 
+/* round the sector number up to the kb_align boundary */
+static inline unsigned long round_to_kb(long sect) {
+        return ((sect - 1) / kb_align + 1) * kb_align;
+}
+
 /* check the partition sizes and write the partition table */
 static int gen_ptable(int nr)
 {
@@ -132,8 +138,13 @@ static int gen_ptable(int nr)
                }
                pte[i].active = ((i + 1) == active) ? 0x80 : 0;
                pte[i].type = parts[i].type;
-               pte[i].start = cpu_to_le16(start = sect + sectors);
-               sect = round_to_cyl(start + parts[i].size * 2);
+               start = sect + sectors;
+               if (kb_align != 0)
+                       start = round_to_kb(start);
+               pte[i].start = cpu_to_le16(start);
+               sect = start + parts[i].size * 2;
+               if (kb_align == 0)
+                       sect = round_to_cyl(sect);
                pte[i].length = cpu_to_le16(len = sect - start);
                to_chs(start, pte[i].chs_start);
                to_chs(start + len - 1, pte[i].chs_end);
@@ -167,7 +178,7 @@ fail:
 
 static void usage(char *prog)
 {
-       fprintf(stderr, "Usage: %s [-v] -h <heads> -s <sectors> -o <outputfile> [-a 0..4] [[-t <type>] -p <size>...] \n", prog);
+       fprintf(stderr, "Usage: %s [-v] -h <heads> -s <sectors> -o <outputfile> [-a 0..4] [-l <align kB>] [[-t <type>] -p <size>...] \n", prog);
        exit(1);
 }
 
@@ -177,7 +188,7 @@ int main (int argc, char **argv)
        int ch;
        int part = 0;
 
-       while ((ch = getopt(argc, argv, "h:s:p:a:t:o:v")) != -1) {
+       while ((ch = getopt(argc, argv, "h:s:p:a:t:o:vl:")) != -1) {
                switch (ch) {
                case 'o':
                        filename = optarg;
@@ -207,6 +218,9 @@ int main (int argc, char **argv)
                        if ((active < 0) || (active > 4))
                                active = 0;
                        break;
+               case 'l':
+                       kb_align = (int) strtoul(optarg, NULL, 0) * 2;
+                       break;
                case '?':
                default:
                        usage(argv[0]);