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

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SVN-Revision: 33218
This commit is contained in:
John Crispin 2012-08-22 09:22:38 +00:00
parent 60e6fcd31b
commit 6c9d20d6e7
2 changed files with 19 additions and 5 deletions
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2
target/linux/brcm2708/image/gen_rpi_sdcard_img.sh
View File

@ -15,7 +15,7 @@ ROOTFSSIZE="$5"
head=4
sect=63
set `ptgen -o $OUTPUT -h $head -s $sect -t c -p ${BOOTFSSIZE}M -t 83 -p ${ROOTFSSIZE}M`
set `ptgen -o $OUTPUT -h $head -s $sect -l 4096 -t c -p ${BOOTFSSIZE}M -t 83 -p ${ROOTFSSIZE}M`
BOOTOFFSET="$(($1 / 512))"
BOOTSIZE="$(($2 / 512))"

22
tools/firmware-utils/src/ptgen.c
View File

@ -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]);