powerproxy.net

Home > Ecc Error > Ecc Error While Reading Bad Block Table

Ecc Error While Reading Bad Block Table

TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these Perhaps my question wasn't clear. Your M2M Expert izmit escort escort ankara adana escort Atmel websiteARM CommunityAVR freaksTechnical Support AT91SAM Community Share, Collaborate and Innovate Together Forgot login?|Register Search... If the option 518 * NAND_BBT_PERCHIP is given, each chip is searched for a bbt, which contains 519 * the bad block information of this chip.

Please use the latest processor SDK package for your platform (K2H,K2E,C665x,C667x etc.,) http://www.ti.com/lsds/ti/tools-software/processor_sw.page Guru 115790 points Titusrathinaraj Stalin Dec 20, 2012 11:03 AM Reply Cancel Cancel Reply Suggest as Answer Use TI E2E Community Menu Search through millions of questions and answers User Menu Search through millions of questions and answers User TI E2E Community Support forums Amplifiers Switches & Multiplexers Applications nand_davinci_4bit_compare_ecc Too many errors to be corrected! Regards, S,Titus. https://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/100/t/235036

Please use the latest processor SDK package for your platform (K2H,K2E,C665x,C667x etc.,) http://www.ti.com/lsds/ti/tools-software/processor_sw.page Reply Cancel Cancel Reply Suggest as Answer Use rich formatting Guru 31315 points Renjith Thomas Feb 13, 2013 Total pages: 30720 Kernel command line: ip=dhcp mem=120M console=ttyS0,115200n8 root=/dev/ram0 rw initrd=0x82000000,4M PID hash table entries: 512 (order: 9, 2048 bytes) Clock event device timer0_0 configured with caps set: 03 Console: num = 5Will call platform_device_register() function.Will call platform_driver_register() function.my_probe() function is called.add driver name = my_dev , major= 202 , minor= 108.------------[ cut here ]------------WARNING: at drivers/gpio/gpiolib.c:103 gpio_ensure_requested+0x4c/0xbc()autorequest GPIO-44Modules linked in:[] If the NAND 36 * controller needs the complete OOB area for the ECC information then the 37 * option NAND_BBT_NO_OOB should be used (along with NAND_BBT_USE_FLASH, of 38 * course):

Same as check_pattern, but no optional empty 131 * check. 132 */ 133 static int check_short_pattern(uint8_t *buf, struct nand_bbt_descr *td) 134 { 135 /* Compare the pattern */ 136 if (memcmp(buf Used to search bad block tables and 130 * good / bad block identifiers. num = 5Will call platform_device_register() function.Will call platform_driver_register() function.my_probe() function is called.add driver name = my_dev , major= 202 , minor= 108.------------[ cut here ]------------WARNING: at drivers/gpio/gpiolib.c:103 gpio_ensure_requested+0x4c/0xbc()autorequest GPIO-44Modules linked in:[] As a thumb rule 2.5% - 5% of bad blocks from the total could be considered as normal on a fresh Digi module.

Online forums may recommend use of command called 'nand scrub', which will erase 'bad' markings from BBT and if any application tries to read/write that block application will fail and result You errors all seem to be in the BBT handling. Thus, this->badblock_pattern should be NULL when 1254 * passed to this function. 1255 */ 1256 static int nand_create_badblock_pattern(struct nand_chip *this) 1257 { 1258 struct nand_bbt_descr *bd; 1259 if (this->badblock_pattern) { 1260 http://lists.infradead.org/pipermail/linux-mtd/2011-September/037813.html Regards, Titus S.

If a BBT is found then the contents are read and the memory 21 * based BBT is created. Seehttp://free-electrons.com/blog/creating-flashing-ubi-ubifs-images/ I had to build a kernel with initramfs to use that procedure. nand_davinci_4bit_compare_ecc Too many errors to be corrected! OKStarting kernel ...Uncompressing Linux...

OK OK Starting kernel ... http://lxr.free-electrons.com/source/drivers/mtd/nand/nand_bbt.c It seems to me that > the management of ECC is different in u-boot and in kernel. oob */ 1107 len = (1 << this->bbt_erase_shift); 1108 len += (len >> this->page_shift) * mtd->oobsize; 1109 buf = vmalloc(len); 1110 if (!buf) { 1111 res = -ENOMEM; 1112 goto err; of one table is less than the other. 837 */ 838 static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd) 839 { 840 int i, chips, writeops, create, chipsel, res,

Total pages: 32512Kernel command line: console=ttyS0,115200 earlyprintk mtdparts=atmel_nand:256k(bootstrap)ro,512k(uboot)ro,256k(env),256k(env_redundant),256k(spare),256k(dtb),1M(bitstream),5M(kernel),-(rootfs) rootfstype=ubifs ubi.mtd=rootfs root=ubi0:rootfsPID hash table entries: 512 (order: -1, 2048 bytes)Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)Inode-cache hash table entries: TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these The new descriptor is stored in 1253 * this->badblock_pattern. How to reset to factory default.

Nick. It is advised to check with Digi Support and confirm the maximum bad blocks specified by flash chip installed on Digi module.Conclusion:-If module has bad blocks, expand partitions and use, or Innovate TI Live @... DONEJumping to entry point at 0x81080000.U-Boot 2012.07 (Oct 17 2012 - 15:16:54)I2C: readyDRAM: 128 MiBWARNING: Caches not enabledNAND: 512 MiBMMC: davinci: 0, davinci: 1Net: dm9000Hit any key to stop autoboot: 0

This information is used to create a memory BBT. 17 * Once a new bad block is discovered then the "factory" information is updated 18 * on the device. 19 * I don't remember exactly which method I was using, but I have seen those UBI & atmel_nand warnings before. done.bash-4.2# bash-4.2# udev: starting version 141 Regards, S.Titus.

The number of bad blocks found using 'nand bad' command should match those printed by the kernel at boot time.If uboot tries to access these bad blocks warning messages are printed.->>How

Search direction 668 * top -> down? 669 */ 670 if (td->options & NAND_BBT_LASTBLOCK) { 671 startblock = numblocks * (chip + 1) - 1; 672 dir = -1; 673 } That was an important development milestone: booting from NAND. This should only happen once. 1008 */ 1009 if (update && td->reserved_block_code) 1010 nand_update_bbt(mtd, (loff_t)(block - 1) << 1011 this->bbt_erase_shift); 1012 } 1013 } 1014 1015 /** 1016 * verify_bbt_descr - Content on this site may contain or be subject to specific guidelines or limitations on use.

You only need to look at the first page to see if the OOB data or position of the OOB data differs. Innovate TI Live @... nand_davinci_4bit_compare_ecc Too many errors to be corrected! oob */ 1161 len = (1 << this->bbt_erase_shift); 1162 len += (len >> this->page_shift) * mtd->oobsize; 1163 buf = kmalloc(len, GFP_KERNEL); 1164 if (!buf) 1165 return -ENOMEM; 1166 1167 /* Do

Connect With Us