On Mon, Feb 25, 2019 at 10:43 AM Zubair Lutfullah Kakakhel <zub...@balena.io> wrote: > > Hi, > > I've encountered occasional glitches while writing to the sd card > via u-boot(2018.07) on a Pi 3 B+. The goal is to write the bootcount > in the boot partition. As a test, this is the loop I used to read, display > contents, write to the same file over and over again. > > ``` > mw 200000 0 > while itest *200000 == 0 ; do > fatload mmc 0:1 $kernel_addr_r resin-image > md $kernel_addr_r 18 > fatwrite mmc 0:1 $kernel_addr_r resin-image 18 > echo === done ==== > done > ``` > resin-image is a file in the boot partition that has some text in it. > > After a few minutes of this loop running, I 'sometimes' get this error > and the sd card stops working > > ``` > writing resin-image > wait_transfer_complete - still waiting after 100001 retries > mmc write failed > Error: flush fat buffer > > ** Unable to write "resin-image" from mmc 0:1 ** > WARNING at > /home/zubairlk/resin/yocto/resin-raspberrypi3/build/tmp/work/raspberrypi3-poky-linux-gnueabi/u-boot/1_2018.07-r0/git/drivers/mmc/bcm2835_sdhost.c:376/bcm2835_prepare_data()! > WARNING at > /home/zubairlk/resin/yocto/resin-raspberrypi3/build/tmp/work/raspberrypi3-poky-linux-gnueabi/u-boot/1_2018.07-r0/git/drivers/mmc/bcm2835_sdhost.c:408/bcm2835_send_command()! > WARNING at > /home/zubairlk/resin/yocto/resin-raspberrypi3/build/tmp/work/raspberrypi3-poky-linux-gnueabi/u-boot/1_2018.07-r0/git/drivers/mmc/bcm2835_sdhost.c:408/bcm2835_send_command()! > WARNING at > /home/zubairlk/resin/yocto/resin-raspberrypi3/build/tmp/work/raspberrypi3-poky-linux-gnueabi/u-boot/1_2018.07-r0/git/drivers/mmc/bcm2835_sdhost.c:408/bcm2835_send_command()! > WARNING at > /home/zubairlk/resin/yocto/resin-raspberrypi3/build/tmp/work/raspberrypi3-poky-linux-gnueabi/u-boot/1_2018.07-r0/git/drivers/mmc/bcm2835_sdhost.c:408/bcm2835_send_command()! > WARNING at > /home/zubairlk/resin/yocto/resin-raspberrypi3/build/tmp/work/raspberrypi3-poky-linux-gnueabi/u-boot/1_2018.07-r0/git/drivers/mmc/bcm2835_sdhost.c:408/bcm2835_send_command()! > ** Can't read partition table on 0:0 ** > ** Invalid partition 1 ** > 00080000: 4e204f44 5220544f 564f4d45 48542045 DO NOT REMOVE TH > 00080010: 46205349 0a454c49 0f030f03 0f030f03 IS FILE......... > 00080020: 0f030f03 0f030f03 01600103 03030300 ..........`..... > 00080030: 03030303 03030303 03030303 03030303 ................ > 00080040: 03030303 03030303 03030303 03034103 .............A.. > 00080050: 03030303 03030303 03030303 03030303 ................ > WARNING at > /home/zubairlk/resin/yocto/resin-raspberrypi3/build/tmp/work/raspberrypi3-poky-linux-gnueabi/u-boot/1_2018.07-r0/git/drivers/mmc/bcm2835_sdhost.c:408/bcm2835_send_command()! > WARNING at > /home/zubairlk/resin/yocto/resin-raspberrypi3/build/tmp/work/raspberrypi3-poky-linux-gnueabi/u-boot/1_2018.07-r0/git/drivers/mmc/bcm2835_sdhost.c:408/bcm2835_send_command()! > WARNING at > /home/zubairlk/resin/yocto/resin-raspberrypi3/build/tmp/work/raspberrypi3-poky-linux-gnueabi/u-boot/1_2018.07-r0/git/drivers/mmc/bcm2835_sdhost.c:408/bcm2835_send_command()! > WARNING at > /home/zubairlk/resin/yocto/resin-raspberrypi3/build/tmp/work/raspberrypi3-poky-linux-gnueabi/u-boot/1_2018.07-r0/git/drivers/mmc/bcm2835_sdhost.c:408/bcm2835_send_command()! > WARNING at > /home/zubairlk/resin/yocto/resin-raspberrypi3/build/tmp/work/raspberrypi3-poky-linux-gnueabi/u-boot/1_2018.07-r0/git/drivers/mmc/bcm2835_sdhost.c:408/bcm2835_send_command()! > WARNING at > /home/zubairlk/resin/yocto/resin-raspberrypi3/build/tmp/work/raspberrypi3-poky-linux-gnueabi/u-boot/1_2018.07-r0/git/drivers/mmc/bcm2835_sdhost.c:408/bcm2835_send_command()! > ** Can't read partition table on 0:0 ** > ** Invalid partition 1 ** > ``` > > What is even more concerning is that the device can't boot. Even if a > write failed. > Subsequent reads seem to fail as well. > > ``` > U-Boot> mmc part > > Partition Map for MMC device 0 -- Partition Type: DOS > > Part Start Sector Num Sectors UUID Type > WARNING at > /home/zubairlk/resin/yocto/resin-raspberrypi3/build/tmp/work/raspberrypi3-poky-linux-gnueabi/u-boot/1_2018.07-r0/git/drivers/mmc/bcm2835_sdhost.c:408/bcm2835_send_command()! > WARNING at > /home/zubairlk/resin/yocto/resin-raspberrypi3/build/tmp/work/raspberrypi3-poky-linux-gnueabi/u-boot/1_2018.07-r0/git/drivers/mmc/bcm2835_sdhost.c:408/bcm2835_send_command()! > WARNING at > /home/zubairlk/resin/yocto/resin-raspberrypi3/build/tmp/work/raspberrypi3-poky-linux-gnueabi/u-boot/1_2018.07-r0/git/drivers/mmc/bcm2835_sdhost.c:408/bcm2835_send_command()! > WARNING at > /home/zubairlk/resin/yocto/resin-raspberrypi3/build/tmp/work/raspberrypi3-poky-linux-gnueabi/u-boot/1_2018.07-r0/git/drivers/mmc/bcm2835_sdhost.c:408/bcm2835_send_command()! > WARNING at > /home/zubairlk/resin/yocto/resin-raspberrypi3/build/tmp/work/raspberrypi3-poky-linux-gnueabi/u-boot/1_2018.07-r0/git/drivers/mmc/bcm2835_sdhost.c:408/bcm2835_send_command()! > WARNING at > /home/zubairlk/resin/yocto/resin-raspberrypi3/build/tmp/work/raspberrypi3-poky-linux-gnueabi/u-boot/1_2018.07-r0/git/drivers/mmc/bcm2835_sdhost.c:408/bcm2835_send_command()! > ** Can't read partition table on 0:0 ** > U-Boot> > ``` > > I can recover the device after a reboot. > > Any thoughts/ideas about where/what I should look for? > Or if I'm lucky, any wip patches floating around?
Any thoughts? Regards ZubairLK > > Thanks > > Regards, > ZubairLK > > p.s. The sd card is a good SanDisk one.. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
