Thanks with my great appreciation. Your reply is much helpful.
2007/3/22, Glen Johnson <[EMAIL PROTECTED]>:
Yue Han wrote: > Greetings > My question as the subject. > > Here is the course what give me the question. > > When is use my jffs2 fs, the console always tell me: > ======== > jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at > 0x000e0000: 0x0101 instead > JFFS2: Erase block at 0x000e0000 is not formatted. It will be erased > ======== > As the result, my flash cann't do any write command at all: > ======== > Last[2] is 1, datum is 85 > Write clean marker to block at 0x000e0000 failed: -5 > ======== > > My jffs2.img about 14 blocks(64K), it is 0xe0000 in to HEX. > I's using 4M norflash, BASE_ADDRESS is 0xbfc00000. > I'll put the jffs2.img to 0x40000. > For test, I only give the os(mtd1) one block free space. > So the mtd1 has 14+1 blocks.(0xf0000). > > The console information as below: > ========= > number of CFI chips: 1 > Creating 3 MTD partitions on "Flash": > 0x00000000-0x00040000 : "Bootloader" > mtd: Giving out device 0 to Bootloader > 0x00040000-0x00130000 : "os" > mtd: Giving out device 1 to os > 0x00130000-0x00400000 : "bkup" > ========= > > I dumped the flash at block 0xd0000:(0xbfcd10000 == 0xbfc00000 + > 0x40000 + 0xd0000 , means this block has my jffs2.img ) > > Memory Dump Result > ============================================================================== > 0xbfd10000 : 19 85 20 03 00 00 00 0c f0 60 dc 98 19 85 e0 02 > 0xbfd10010 : 00 00 06 80 6e bc 83 11 00 00 00 2c 00 00 00 08 > 0xbfd10020 : 00 00 81 ed 00 00 00 00 00 00 72 5c 45 b2 40 58 > 0xbfd10030 : 45 b2 40 58 45 b2 40 58 00 00 69 c4 00 00 06 3c > 0xbfd10040 : 00 00 06 3c 00 00 00 00 d4 fd e1 04 d4 b0 ad b4 > 0xbfd10050 : 8c 21 ba 16 a9 02 e4 a1 7f 6e 48 b9 2b 82 ea dd > 0xbfd10060 : 48 34 5a 18 d5 7a 54 89 0f ce 77 75 e5 67 95 cc > 0xbfd10070 : 88 9f ec d4 b0 c7 9e e1 59 a9 66 6c 7c 56 c2 55 > 0xbfd10080 : 84 4d ee ae b8 41 a8 ed 28 a7 35 41 32 0b 9b 66 > 0xbfd10090 : 70 66 bb 2b a5 e2 c7 e0 2b f8 d8 be 52 e9 ee 62 > 0xbfd100a0 : 69 7f 71 df 81 42 e9 9e 89 fd 77 ef 29 e1 da 75 > 0xbfd100b0 : ad 59 db c9 c7 ed 9d 74 4e 5a 47 90 ec fb 7f 4c > 0xbfd100c0 : aa 65 fe 89 ae 96 4a e2 c8 4f 9b b0 d6 5a e6 77 > 0xbfd100d0 : 7b af f5 f5 86 68 90 cc 44 ab ee a6 0a 72 5f bf > 0xbfd100e0 : 3d e8 9f ed 03 5f 03 d7 b6 6c da bc e5 86 5f bb > 0xbfd100f0 : 71 70 28 f7 eb 37 6d bd f9 96 e1 5b 7f e3 43 1f > ============================================================================== > > then I dumped 0xe0000 where the error message placed:(0xbfd20000 == > 0xbfc00000 + 0x40000 + 0xe0000) > > Memory Dump Result > ============================================================================== > 0xbfd20000 : 01 01 ff ff ff ff ff ff ff ff ff ff ff ff ff ff > 0xbfd20010 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff > 0xbfd20020 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff > 0xbfd20030 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff > 0xbfd20040 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff > 0xbfd20050 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff > 0xbfd20060 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff > 0xbfd20070 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff > 0xbfd20080 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff > 0xbfd20090 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff > 0xbfd200a0 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff > 0xbfd200b0 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff > 0xbfd200c0 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff > 0xbfd200d0 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff > 0xbfd200e0 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff > 0xbfd200f0 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff > ============================================================================== > > DOSE the bit mask error(0x1985) is the primary criminal who caused my > jffs2 fs can't write? > > Is anyone can give me some advice? I am gonna crazy about this!!! > > Thank you! > > > > > ------------------------------------------------------------------------ > > _______________________________________________ > uClinux-dev mailing list > [email protected] > http://mailman.uclinux.org/mailman/listinfo/uclinux-dev > This message was resent by [email protected] > To unsubscribe see: > http://mailman.uclinux.org/mailman/options/uclinux-dev Mr. Han, I too struggled with getting jffs2 working properly on my system. Back then a gentleman created this web page to help explain some of the things that you are seeing. So first read through this web page, http://www.linux-mtd.infradead.org/faq/jffs2.html#L_magicnfound . I found that it explained much of what you are seeing now. In the end, I ended up making a small change to my map file. The map file I refer to is in uClinux-dist/linux-2.6.x/drivers/mtd/maps/ directory. I eventually ended up modifying the file m520x.c to work for me. NOTE I am using an AMD29LV3200 flash chip. Different flash chips use different map driver files. I had to dig around in this directory until I found the right file for my chip set. Lastly I ended up having to subtract one from the len of the flash in my point() function. I asked two mail lists about this but no one seems to have an answer. All I know is by subtracting one it forces the code to read the flash. Otherwise I can't find where it aught to read it. Hope this is helpful, Glen Johnson _______________________________________________ uClinux-dev mailing list [email protected] http://mailman.uclinux.org/mailman/listinfo/uclinux-dev This message was resent by [email protected] To unsubscribe see: http://mailman.uclinux.org/mailman/options/uclinux-dev
_______________________________________________ uClinux-dev mailing list [email protected] http://mailman.uclinux.org/mailman/listinfo/uclinux-dev This message was resent by [email protected] To unsubscribe see: http://mailman.uclinux.org/mailman/options/uclinux-dev
