Skip to content

Commit

Permalink
---
Browse files Browse the repository at this point in the history
yaml
---
r: 225728
b: refs/heads/master
c: a020bb1
h: refs/heads/master
v: v3
  • Loading branch information
Sam Ravnborg authored and David S. Miller committed Jan 5, 2011
1 parent a0239e4 commit ef27ec9
Show file tree
Hide file tree
Showing 3 changed files with 31 additions and 18 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 571e08f6e2ddd6ec5d547358f55342726c063072
refs/heads/master: a020bb17b7046cd97ea6924ca99325b6e516bc2d
2 changes: 1 addition & 1 deletion trunk/arch/sparc/boot/Makefile
Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,7 @@ quiet_cmd_elftoaout = ELFTOAOUT $@

ifeq ($(CONFIG_SPARC32),y)
quiet_cmd_piggy = PIGGY $@
cmd_piggy = $(obj)/piggyback_32 $@ System.map $(ROOT_IMG)
cmd_piggy = $(obj)/piggyback_32 $(BITS) $@ System.map $(ROOT_IMG)
quiet_cmd_btfix = BTFIX $@
cmd_btfix = $(OBJDUMP) -x vmlinux | $(obj)/btfixupprep > $@
quiet_cmd_sysmap = SYSMAP $(obj)/System.map
Expand Down
45 changes: 29 additions & 16 deletions trunk/arch/sparc/boot/piggyback_32.c
Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,17 @@

#define AOUT_TEXT_OFFSET 32

static int is64bit = 0;

/* align to power-of-two size */
static int align(int n)
{
if (is64bit)
return (n + 0x1fff) & ~0x1fff;
else
return (n + 0xfff) & ~0xfff;
}

/* read two bytes as big endian */
static unsigned short ld2(char *p)
{
Expand All @@ -62,7 +73,7 @@ static void die(const char *str)
static void usage(void)
{
/* fs_img.gz is an image of initial ramdisk. */
fprintf(stderr, "Usage: piggyback vmlinux.aout System.map fs_img.gz\n");
fprintf(stderr, "Usage: piggyback bits vmlinux.aout System.map fs_img.gz\n");
fprintf(stderr, "\tKernel image will be modified in place.\n");
exit(1);
}
Expand Down Expand Up @@ -128,19 +139,21 @@ int main(int argc,char **argv)
struct stat s;
int image, tail;

if (argc != 4)
if (argc != 5)
usage();
if (stat (argv[3], &s) < 0)
die(argv[3]);
if (strcmp(argv[1], "64") == 0)
is64bit = 1;
if (stat (argv[4], &s) < 0)
die(argv[4]);

if (!get_start_end(argv[2], &start, &end)) {
fprintf (stderr, "Could not determine start and end from %s\n", argv[2]);
if (!get_start_end(argv[3], &start, &end)) {
fprintf (stderr, "Could not determine start and end from %s\n", argv[3]);
exit(1);
}
if ((image = open(argv[1], O_RDWR)) < 0)
die(argv[1]);
if ((image = open(argv[2], O_RDWR)) < 0)
die(argv[2]);
if (read(image, buffer, 512) != 512)
die(argv[1]);
die(argv[2]);
if (memcmp(buffer, aout_magic, 4) != 0) {
fprintf (stderr, "Not a.out. Don't blame me.\n");
exit(1);
Expand All @@ -157,7 +170,7 @@ int main(int argc,char **argv)
if (lseek(image, i, 0) < 0)
die("lseek");
if (read(image, buffer, 1024) != 1024)
die(argv[1]);
die(argv[2]);
for (q = buffer, r = q + 512; q < r; q += 4) {
if (*q == 'H' && q[1] == 'd' && q[2] == 'r' && q[3] == 'S')
break;
Expand All @@ -179,20 +192,20 @@ int main(int argc,char **argv)
*/
st4(buffer, 0);
st4(buffer + 4, 0x01000000);
st4(buffer + 8, (end + 32 + 4095) & ~4095);
st4(buffer + 8, align(end + 32));
st4(buffer + 12, s.st_size);

if (write(image, buffer + 2, 14) != 14)
die(argv[1]);
die(argv[2]);

/* seek page aligned boundary in the image file and add boot image */
if (lseek(image, AOUT_TEXT_OFFSET - start + ((end + 32 + 4095) & ~4095), 0) < 0)
if (lseek(image, AOUT_TEXT_OFFSET - start + align(end + 32), 0) < 0)
die("lseek");
if ((tail = open(argv[3],O_RDONLY)) < 0)
die(argv[3]);
if ((tail = open(argv[4], O_RDONLY)) < 0)
die(argv[4]);
while ((i = read(tail, buffer, 1024)) > 0)
if (write(image, buffer, i) != i)
die(argv[1]);
die(argv[2]);
if (close(image) < 0)
die("close");
if (close(tail) < 0)
Expand Down

0 comments on commit ef27ec9

Please sign in to comment.