forked from luck/tmp_suning_uos_patched
sparc: add $BITS to piggyback arguments
Add new option to piggyback that identify if this is for 32 or 64 bit. Use this information to determine the alignment used. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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571e08f6e2
commit
a020bb17b7
arch/sparc/boot
@ -15,7 +15,7 @@ quiet_cmd_elftoaout = ELFTOAOUT $@
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ifeq ($(CONFIG_SPARC32),y)
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quiet_cmd_piggy = PIGGY $@
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cmd_piggy = $(obj)/piggyback_32 $@ System.map $(ROOT_IMG)
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cmd_piggy = $(obj)/piggyback_32 $(BITS) $@ System.map $(ROOT_IMG)
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quiet_cmd_btfix = BTFIX $@
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cmd_btfix = $(OBJDUMP) -x vmlinux | $(obj)/btfixupprep > $@
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quiet_cmd_sysmap = SYSMAP $(obj)/System.map
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@ -38,6 +38,17 @@
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#define AOUT_TEXT_OFFSET 32
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static int is64bit = 0;
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/* align to power-of-two size */
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static int align(int n)
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{
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if (is64bit)
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return (n + 0x1fff) & ~0x1fff;
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else
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return (n + 0xfff) & ~0xfff;
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}
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/* read two bytes as big endian */
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static unsigned short ld2(char *p)
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{
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@ -62,7 +73,7 @@ static void die(const char *str)
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static void usage(void)
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{
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/* fs_img.gz is an image of initial ramdisk. */
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fprintf(stderr, "Usage: piggyback vmlinux.aout System.map fs_img.gz\n");
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fprintf(stderr, "Usage: piggyback bits vmlinux.aout System.map fs_img.gz\n");
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fprintf(stderr, "\tKernel image will be modified in place.\n");
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exit(1);
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}
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@ -128,19 +139,21 @@ int main(int argc,char **argv)
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struct stat s;
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int image, tail;
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if (argc != 4)
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if (argc != 5)
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usage();
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if (stat (argv[3], &s) < 0)
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die(argv[3]);
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if (strcmp(argv[1], "64") == 0)
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is64bit = 1;
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if (stat (argv[4], &s) < 0)
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die(argv[4]);
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if (!get_start_end(argv[2], &start, &end)) {
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fprintf (stderr, "Could not determine start and end from %s\n", argv[2]);
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if (!get_start_end(argv[3], &start, &end)) {
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fprintf (stderr, "Could not determine start and end from %s\n", argv[3]);
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exit(1);
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}
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if ((image = open(argv[1], O_RDWR)) < 0)
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die(argv[1]);
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if ((image = open(argv[2], O_RDWR)) < 0)
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die(argv[2]);
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if (read(image, buffer, 512) != 512)
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die(argv[1]);
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die(argv[2]);
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if (memcmp(buffer, aout_magic, 4) != 0) {
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fprintf (stderr, "Not a.out. Don't blame me.\n");
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exit(1);
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@ -157,7 +170,7 @@ int main(int argc,char **argv)
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if (lseek(image, i, 0) < 0)
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die("lseek");
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if (read(image, buffer, 1024) != 1024)
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die(argv[1]);
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die(argv[2]);
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for (q = buffer, r = q + 512; q < r; q += 4) {
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if (*q == 'H' && q[1] == 'd' && q[2] == 'r' && q[3] == 'S')
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break;
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@ -179,20 +192,20 @@ int main(int argc,char **argv)
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*/
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st4(buffer, 0);
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st4(buffer + 4, 0x01000000);
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st4(buffer + 8, (end + 32 + 4095) & ~4095);
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st4(buffer + 8, align(end + 32));
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st4(buffer + 12, s.st_size);
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if (write(image, buffer + 2, 14) != 14)
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die(argv[1]);
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die(argv[2]);
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/* seek page aligned boundary in the image file and add boot image */
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if (lseek(image, AOUT_TEXT_OFFSET - start + ((end + 32 + 4095) & ~4095), 0) < 0)
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if (lseek(image, AOUT_TEXT_OFFSET - start + align(end + 32), 0) < 0)
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die("lseek");
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if ((tail = open(argv[3],O_RDONLY)) < 0)
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die(argv[3]);
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if ((tail = open(argv[4], O_RDONLY)) < 0)
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die(argv[4]);
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while ((i = read(tail, buffer, 1024)) > 0)
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if (write(image, buffer, i) != i)
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die(argv[1]);
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die(argv[2]);
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if (close(image) < 0)
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die("close");
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if (close(tail) < 0)
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