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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoPlainText>All – repost since this ended up on the end of another thread.,<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>The issue I have is as follows. <o:p></o:p></p><p class=MsoPlainText>When writing to the MTD on NOR in Linux for a file of more than a few bytes, it fails with a MTD software timeout. <o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>Writing upto 100 bytes are fine, in this test when I jumped to 300 it failed.<o:p></o:p></p><p class=MsoPlainText>I also proved that the small writes do get written; I wrote zeros over my mtd1 "u-boot-env" and had to repair it on reboot.<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>In Uboot there are no NOR or NAND read/write issues, erase appears to work fine etc. Under Linux MTD for the NAND remains flawless and MTD NOR read has no issues.<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>Any thoughts appreciated: some information and the tests output below.<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>LCPSH # flinfo<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>Bank # 1: CFI conformant FLASH (8 x 8) Size: 64 MB in 512 Sectors<o:p></o:p></p><p class=MsoPlainText> AMD Standard command set, Manufacturer ID: 0x15, Device ID: 0x00<o:p></o:p></p><p class=MsoPlainText> Erase timeout: 4096 ms, write timeout: 25 ms<o:p></o:p></p><p class=MsoPlainText> Buffer write timeout: 50 ms, buffer size: 1024 bytes<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText> Sector Start Addresses:<o:p></o:p></p><p class=MsoPlainText> 10000000 RO 10020000 RO 10040000 RO 10060000 RO 10080000<o:p></o:p></p><p class=MsoPlainText> 100A0000 100C0000 100E0000 10100000 10120000<o:p></o:p></p><p class=MsoPlainText> 10140000 10160000 10180000 101A0000 101C0000<o:p></o:p></p><p class=MsoPlainText> 101E0000 10200000 10220000 10240000 10260000<o:p></o:p></p><p class=MsoPlainText> 10280000 102A0000 102C0000 102E0000 10300000<o:p></o:p></p><p class=MsoPlainText> 10320000 10340000 10360000 10380000 103A0000<o:p></o:p></p><p class=MsoPlainText> 103C0000 103E0000 10400000 10420000 10440000<o:p></o:p></p><p class=MsoPlainText> 10460000 10480000 104A0000 104C0000 104E0000<o:p></o:p></p><p class=MsoPlainText> 10500000 10520000 10540000 10560000 10580000<o:p></o:p></p><p class=MsoPlainText> 105A0000 105C0000 105E0000 10600000 10620000<o:p></o:p></p><p class=MsoPlainText>....<o:p></o:p></p><p class=MsoPlainText>....<o:p></o:p></p><p class=MsoPlainText>...<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>root@lvs15:/# uname -a<o:p></o:p></p><p class=MsoPlainText>Linux lvs15 2.6.35-lcp-arm1 #1 SMP Fri Mar 1 11:59:02 EST 2013 armv6l GNU/Linux<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>root@lvs15:/# cat /proc/mtd<o:p></o:p></p><p class=MsoPlainText>dev: size erasesize name<o:p></o:p></p><p class=MsoPlainText>mtd0: 00080000 00020000 "u-boot"<o:p></o:p></p><p class=MsoPlainText>mtd1: 00040000 00020000 "u-boot-env"<o:p></o:p></p><p class=MsoPlainText>mtd2: 03f40000 00020000 "unused-nor"<o:p></o:p></p><p class=MsoPlainText>mtd3: 01e00000 00020000 "nand-linuxImg1"<o:p></o:p></p><p class=MsoPlainText>mtd4: 01e00000 00020000 "nand-linuxImg2"<o:p></o:p></p><p class=MsoPlainText>mtd5: 3c400000 00020000 "nandfs"<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>root@lvs15:/# mtd_debug info /dev/mtd1<o:p></o:p></p><p class=MsoPlainText>MTD_open<o:p></o:p></p><p class=MsoPlainText>MTD_ioctl<o:p></o:p></p><p class=MsoPlainText>MTD_ioctl<o:p></o:p></p><p class=MsoPlainText>MTD_close= MTD_NORFLASH<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>mtd.flags = MTD_CAP_NORFLASH<o:p></o:p></p><p class=MsoPlainText>mtd.size = 262144 (256K)<o:p></o:p></p><p class=MsoPlainText>mtd.erasesize = 131072 (128K)<o:p></o:p></p><p class=MsoPlainText>mtd.writesize = 1<o:p></o:p></p><p class=MsoPlainText>mtd.oobsize = 0<o:p></o:p></p><p class=MsoPlainText>regions = 0<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>mtd_debug read /dev/mtd1 0 1000 read.txt Copied 1000 bytes from address 0x00000000 in flash to read.txt<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>root@lvs15:/# cat read.txt<o:p></o:p></p><p class=MsoPlainText>Åı ôbootdelay=5baudrate=115200loadaddr=0x05000000mtdids=nor0=physmap-flash.0,nand0=lcp_nandmtdparts=mtdparts=physmap-flash.0:512k(u-boot),256k(u-boot-env),-(unused-nor);lcp_nand:30M(nand-linuxImg1),30M(nand-linuxImg2),-(nandfs)verify=nlcpethmac0cpathchnl=0lcpethmac0ethforcerate=1000lcpethmac0ethforcefulldplx=Ylcpethmac1cpathchnl=0lcpethmac1ethforcerate=1000lcpethmac1ethforcefulldplx=Yethprime=LCP_ETH_MAC0ethrotate=no netretry=no autostart=yessetupbootargs=setenv bootargs earlyprintk=serial,ttyAMA0,$(baudrate) console=ttyAMA0,$(baudrate)n8 root=/dev/ram mtdids=$(mtdids) $(mtdparts)bootcmd=fpgasetup;run setupbootargs;tftp ad_value=0x1e1lcpethmac1bcastfltr=onlcpethmac1mcastfltr=onlcpethmac1pausepktfltr=onlcpethmac1runtpktfltr=onlcpethmac1ucastfltr=onlcpethmac0bcastfltr=onlcpethmac0mcastfltr=onlcpethmac0pausepktfltr=onlcpethmac0runtpktfltr=onlcpethmac0ucastfltr=onlcpethmac0ucastfltrda2=00:00:00:00:00:00lcpethmac0ucastfltrda3=00:00:00:00:00:00lcp<d /dev/mtd2 0 1000 read.txtmtd_debug write /dev/mtd1 0 1000 read.txt<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>I appreciate I do not do erases between writes but the data is the same and I have not had trouble with this, other than if you do write different data obviously all bets are off!<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>root@lvs15:/# mtd_debug write /dev/mtd1 0 10 read.txt MTD_open MTD_write MTD do_write_buffer(): WRITE 0x00080000(0x000000c5) Copied 10 bytes from read.txt to address 0x00000000 in flash<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>root@lvs15:/# mtd_debug write /dev/mtd1 0 100 read.txt MTD_open MTD_write MTD do_write_buffer(): WRITE 0x00080000(0x000000c5) Copied 100 bytes from read.txt to address 0x00000000 in flash<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>root@lvs15:/# mtd_debug write /dev/mtd1 0 300 read.txt MTD_open MTD_write MTD do_write_buffer(): WRITE 0x00080000(0x000000c5) MTD do_write_buffer(): software timeout<o:p></o:p></p><p class=MsoPlainText>file_to_flash: write, size 0x12c, n 0x12c<o:p></o:p></p><p class=MsoPlainText>write(): Input/output error<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>