[brcm63xx] rework imagetag firmware generator and MTD partition parser to accomodate with all known

imagetag versions from Broadcom and vendors, patch from Daniel Dickinson (fixes #4987).


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@16393 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 142 insertions, 11 deletions

diff --git a/target/linux/brcm63xx/files/drivers/mtd/maps/bcm963xx-flash.c b/target/linux/brcm63xx/files/drivers/mtd/maps/bcm963xx-flash.c
index 33aafd850..bdb57990d 100644
--- a/target/linux/brcm63xx/files/drivers/mtd/maps/bcm963xx-flash.c
+++ b/target/linux/brcm63xx/files/drivers/mtd/maps/bcm963xx-flash.c
@@ -43,39 +43,170 @@ static struct map_info bcm963xx_map = {
        .bankwidth	= BUSWIDTH,
 };
 
+static struct tagiddesc_t tagidtab[NUM_TAGID] = TAGID_DEFINITIONS;
+
+static uint32_t tagcrc32tab[256] = {
+	0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3,
+	0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91,
+	0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
+	0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5,
+	0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B,
+	0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
+	0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F,
+	0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D,
+	0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
+	0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01,
+	0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457,
+	0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
+	0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB,
+	0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9,
+	0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
+	0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD,
+	0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683,
+	0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
+	0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7,
+	0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5,
+	0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
+	0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79,
+	0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F,
+	0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
+	0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713,
+	0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21,
+	0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
+	0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45,
+	0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB,
+	0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
+	0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF,
+	0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D
+};
+
+static uint32_t tagcrc32(uint32_t crc, uint8_t *data, size_t len)
+{
+	while (len--)
+		crc = (crc >> 8) ^ tagcrc32tab[(crc ^ *data++) & 0xFF];
+
+	return crc;
+}
+
 static int parse_cfe_partitions( struct mtd_info *master, struct mtd_partition **pparts)
 {
 	int nrparts = 3, curpart = 0; /* CFE,NVRAM and global LINUX are always present. */
-	struct bcm_tag *buf;
+	union bcm_tag *buf;
 	struct mtd_partition *parts;
 	int ret;
 	size_t retlen;
 	unsigned int rootfsaddr, kerneladdr, spareaddr;
 	unsigned int rootfslen, kernellen, sparelen, totallen;
+	unsigned char *tagid;
 	int namelen = 0;
 	int i;
+	uint32_t tagidcrc;
+	uint32_t calctagidcrc;
+        bool tagid_match = false;
+	char *boardid;
+        char *tagversion;
+	char *matchtagid;
 
 	/* Allocate memory for buffer */
-	buf = vmalloc(sizeof(struct bcm_tag));
+	buf = vmalloc(sizeof(union bcm_tag));
 	if (!buf)
 		return -ENOMEM;
 
 	/* Get the tag */
-	ret = master->read(master,master->erasesize,sizeof(struct bcm_tag), &retlen, (void *)buf);
-	if (retlen != sizeof(struct bcm_tag)){
+	ret = master->read(master,master->erasesize,sizeof(union bcm_tag), &retlen, (void *)buf);
+	if (retlen != sizeof(union bcm_tag)){
 		vfree(buf);
 		return -EIO;
 	}
-	printk(KERN_INFO PFX "CFE boot tag found with version %s and board type %s.\n",buf->tagVersion,buf->boardid);
+
+	/* tagId isn't in the same location, so we check each tagid against the
+         * tagid CRC.  If the CRC is valid we have found the right tag and so
+         * use that tag
+         */
+
+	for (i = 0; i < NUM_TAGID; i++) {
+	  switch(i) {
+	  case 0:
+	    matchtagid = "bccfe";
+	    tagid = &(buf->bccfe.tagId[0]);
+	    sscanf(buf->bccfe.rootAddress,"%u", &rootfsaddr);
+	    sscanf(buf->bccfe.rootLength, "%u", &rootfslen);
+	    sscanf(buf->bccfe.kernelAddress, "%u", &kerneladdr);
+	    sscanf(buf->bccfe.kernelLength, "%u", &kernellen);
+	    sscanf(buf->bccfe.totalLength, "%u", &totallen);
+	    tagidcrc = buf->bccfe.tagIdCRC;
+	    tagversion = &(buf->bccfe.tagVersion[0]);
+	    boardid = &(buf->bccfe.boardid[0]);
+	    break;
+	  case 1:
+	    matchtagid = "bc300";
+	    tagid = &(buf->bc300.tagId[0]);
+	    sscanf(buf->bc300.rootAddress,"%u", &rootfsaddr);
+	    sscanf(buf->bc300.rootLength, "%u", &rootfslen);
+	    sscanf(buf->bc300.kernelAddress, "%u", &kerneladdr);
+	    sscanf(buf->bc300.kernelLength, "%u", &kernellen);
+	    sscanf(buf->bc300.totalLength, "%u", &totallen);
+	    tagidcrc = buf->bc300.tagIdCRC;
+	    tagversion = &(buf->bc300.tagVersion[0]);
+	    boardid = &(buf->bc300.boardid[0]);
+	    break;
+	  case 2:
+	    matchtagid = "ag306";
+	    tagid = &(buf->ag306.tagId[0]);
+	    sscanf(buf->ag306.rootAddress,"%u", &rootfsaddr);
+	    sscanf(buf->ag306.rootLength, "%u", &rootfslen);
+	    sscanf(buf->ag306.kernelAddress, "%u", &kerneladdr);
+	    sscanf(buf->ag306.kernelLength, "%u", &kernellen);
+	    sscanf(buf->ag306.totalLength, "%u", &totallen);
+	    tagidcrc = buf->ag306.tagIdCRC;
+	    tagversion = &(buf->ag306.tagVersion[0]);
+	    boardid = &(buf->ag306.boardid[0]);
+	    break;
+	  case 3:
+	    matchtagid = "bc308";
+	    tagid = &(buf->bc308.tagId[0]);
+	    sscanf(buf->bc308.rootAddress,"%u", &rootfsaddr);
+	    sscanf(buf->bc308.rootLength, "%u", &rootfslen);
+	    sscanf(buf->bc308.kernelAddress, "%u", &kerneladdr);
+	    sscanf(buf->bc308.kernelLength, "%u", &kernellen);
+	    sscanf(buf->bc308.totalLength, "%u", &totallen);
+	    tagidcrc = buf->bc308.tagIdCRC;
+	    tagversion = &(buf->bc308.tagVersion[0]);
+	    boardid = &(buf->bc308.boardid[0]);
+	    break;
+	  case 4:
+	    matchtagid = "bc310";
+	    tagid = &(buf->bc310.tagId[0]);
+	    sscanf(buf->bc310.rootAddress,"%u", &rootfsaddr);
+	    sscanf(buf->bc310.rootLength, "%u", &rootfslen);
+	    sscanf(buf->bc310.kernelAddress, "%u", &kerneladdr);
+	    sscanf(buf->bc310.kernelLength, "%u", &kernellen);
+	    sscanf(buf->bc310.totalLength, "%u", &totallen);
+	    tagidcrc = buf->bc310.tagIdCRC;
+	    tagversion = &(buf->bc310.tagVersion[0]);
+	    boardid = &(buf->bc310.boardid[0]);
+	    break;
+	  }
+	  if (strncmp(tagid, matchtagid, TAGID_LEN) != 0) {
+	    continue;
+	  }
+
+	  calctagidcrc = tagcrc32(IMAGETAG_CRC_START, tagid, TAGID_LEN);
+	  if (tagidcrc = calctagidcrc) {
+	    tagid_match = true;
+	    break;
+	  }
+	}
+
+	if (!tagid_match) {
+	  printk(KERN_ERR PFX "Failed to find a valid tag id\n");
+	  return -EIO;
+	}
+
+	printk(KERN_INFO PFX "CFE boot tag found with version %s, board type %s, and tagid %s.\n",tagversion,boardid,tagid);
 	
-	/* Get the values and calculate */
-	sscanf(buf->rootAddress,"%u", &rootfsaddr);
 	rootfsaddr = rootfsaddr - EXTENDED_SIZE;
-	sscanf(buf->rootLength, "%u", &rootfslen);
-	sscanf(buf->kernelAddress, "%u", &kerneladdr);
 	kerneladdr = kerneladdr - EXTENDED_SIZE;
-	sscanf(buf->kernelLength, "%u", &kernellen);
-	sscanf(buf->totalLength, "%u", &totallen);
 	spareaddr = roundup(totallen,master->erasesize) + master->erasesize;
 	sparelen = master->size - spareaddr - master->erasesize;