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Add support for scramble to put a 4 character string indicating binary type and the 4 character model id at the end of the mi4 header.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12760 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Barry Wardell 2007-03-14 13:51:05 +00:00
parent 9d264806e8
commit 12df774d9f
3 changed files with 49 additions and 15 deletions
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6
tools/mi4.c
View file

@ -102,7 +102,8 @@ static void int2le(unsigned int val, unsigned char* addr)
addr[3] = (val >> 24) & 0xff; addr[3] = (val >> 24) & 0xff;
} }
int mi4_encode(char *iname, char *oname, int version, int magic) int mi4_encode(char *iname, char *oname, int version, int magic,
char *model, char *type)
{ {
size_t len; size_t len;
int length; int length;
@ -151,6 +152,9 @@ int mi4_encode(char *iname, char *oname, int version, int magic)
int2le(0xaa55aa55, &outbuf[0x200+length]); /* More Magic */ int2le(0xaa55aa55, &outbuf[0x200+length]); /* More Magic */
strncpy((char *)outbuf+0x1f8, type, 4); /* type of binary - RBBL, RBOS, ... */
strncpy((char *)outbuf+0x1fc, model, 4); /* type of binary - RBBL, RBOS, ... */
/* Calculate CRC32 checksum */ /* Calculate CRC32 checksum */
chksum_crc32gentab (); chksum_crc32gentab ();
crc = chksum_crc32 (outbuf+28,mi4length-28); crc = chksum_crc32 (outbuf+28,mi4length-28);

3
tools/mi4.h
View file

@ -23,6 +23,7 @@
#define MI4_MAGIC_DEFAULT 0xec #define MI4_MAGIC_DEFAULT 0xec
#define MI4_MAGIC_R 0xfc #define MI4_MAGIC_R 0xfc
int mi4_encode(char *iname, char *oname, int version, int magic); int mi4_encode(char *iname, char *oname, int version, int magic,
char *model, char *type);
#endif #endif

49
tools/scramble.c
View file

@ -89,6 +89,10 @@ void usage(void)
"\t-mi4v2 PortalPlayer .mi4 format (revision 010201)\n" "\t-mi4v2 PortalPlayer .mi4 format (revision 010201)\n"
"\t-mi4v3 PortalPlayer .mi4 format (revision 010301)\n" "\t-mi4v3 PortalPlayer .mi4 format (revision 010301)\n"
"\t-mi4r Sandisk Rhapsody .mi4 format\n" "\t-mi4r Sandisk Rhapsody .mi4 format\n"
"\t All mi4 options take two optional arguments:\n"
"\t -model=XXXX where XXXX is the model id string\n"
"\t -type=XXXX where XXXX is a string indicating the \n"
"\t type of binary, eg. RBOS, RBBL\n"
"\t-add=X Rockbox generic \"add-up\" checksum format\n" "\t-add=X Rockbox generic \"add-up\" checksum format\n"
"\t (X values: h100, h120, h140, h300, ipco, nano, ipvd, mn2g\n" "\t (X values: h100, h120, h140, h300, ipco, nano, ipvd, mn2g\n"
"\t ip3g, ip4g, mini, iax5, h10, h10_5gb, tpj2, e200)\n" "\t ip3g, ip4g, mini, iax5, h10, h10_5gb, tpj2, e200)\n"
@ -266,20 +270,45 @@ int main (int argc, char** argv)
oname = argv[3]; oname = argv[3];
return ipod_encode(iname, oname, 3, true); /* Firmware image v3 */ return ipod_encode(iname, oname, 3, true); /* Firmware image v3 */
} }
else if(!strcmp(argv[1], "-mi4v2")) { else if(!strncmp(argv[1], "-mi4", 4)) {
iname = argv[2]; int mi4magic;
oname = argv[3]; int version;
return mi4_encode(iname, oname, 0x00010201, MI4_MAGIC_DEFAULT); char model[4] = "";
char type[4] = "";
if(!strcmp(&argv[1][4], "v2")) {
mi4magic = MI4_MAGIC_DEFAULT;
version = 0x00010201;
} }
else if(!strcmp(argv[1], "-mi4v3")) { else if(!strcmp(&argv[1][4], "v3")) {
iname = argv[2]; mi4magic = MI4_MAGIC_DEFAULT;
oname = argv[3]; version = 0x00010301;
return mi4_encode(iname, oname, 0x00010301, MI4_MAGIC_DEFAULT);
} }
else if(!strcmp(argv[1], "-mi4r")) { else if(!strcmp(&argv[1][4], "r")) {
mi4magic = MI4_MAGIC_R;
version = 0x00010301;
}
else {
printf( "Invalid mi4 version: %s\n", &argv[1][4]);
return -1;
}
iname = argv[2]; iname = argv[2];
oname = argv[3]; oname = argv[3];
return mi4_encode(iname, oname, 0x00010301, MI4_MAGIC_R);
if(!strncmp(argv[2], "-model=", 7)) {
iname = argv[3];
oname = argv[4];
strncpy(model, &argv[2][7], 4);
if(!strncmp(argv[3], "-type=", 6)) {
iname = argv[4];
oname = argv[5];
strncpy(type, &argv[3][6], 4);
}
}
return mi4_encode(iname, oname, version, mi4magic, model, type);
} }
/* open file */ /* open file */