Unrecognized filesystem type in imx8mn-evk

[vinothkumars]

Hi All,

I got following u-boot error "Unrecognized filesystem type" from the source,

u-boot-imx/1_2020.04-r0/git/ fs/fat/fat.c

/* Check if it's actually a DOS volume */
if (memcmp(buffer + DOS_BOOT_MAGIC_OFFSET, "\x55\xAA", 2)) {
cur_dev = NULL;
return -1;
}

U-Boot 2020.04-5.4.24-2.1.0+g4979a99482 (Dec 16 2020 - 12:26:48 +0000)

CPU: i.MX8MNano Quad rev1.0 1500 MHz (running at 1200 MHz)
CPU: Commercial temperature grade (0C to 95C) at 38C
Reset cause: POR
Model: Connectivity Core
DRAM: 2 GiB
TCPC: Vendor ID [0x1fc9], Product ID [0x5110], Addr [I2C1 0x52]
Power supply on USB2
TCPC: Vendor ID [0x1fc9], Product ID [0x5110], Addr [I2C1 0x50]
MMC: FSL_SDHC: 1, FSL_SDHC: 2
Loading Environment from MMC... *** Warning - bad CRC, using default environment

[*]-Video Link 0Can't find cec device id=0x3c
fail to probe panel device adv7535@3d
failed to get any video link display timings
probe video device failed, ret -22

[0] lcd-controller@32e00000, video
[1] dsi_controller@32e10000, video_bridge
[2] adv7535@3d, panel
Can't find cec device id=0x3c
fail to probe panel device adv7535@3d
failed to get any video link display timings
probe video device failed, ret -22
In: serial
Out: serial
Err: serial

BuildInfo:
- ATF b0a00f2
- U-Boot 2020.04-5.4.24-2.1.0+g4979a99482

switch to partitions #0, OK
mmc2(part 0) is current device
flash target is MMC:2
VINOTH ++++++++++++++ validate_gpt_header ++++++++++++++++++
VINOTH ++++++++++++++ validate_gpt_header ++++++++++++++++++
Net:
Warning: ethernet@30be0000 using MAC address from ROM
eth0: ethernet@30be0000
Fastboot: Normal
Normal Boot
Hit any key to stop autoboot: 0
switch to partitions #0, OK
mmc2(part 0) is current device
VINOTH ------------------------------------- do_fat_fsload --------------------------
VINOTH ------------------------------------- do_load --------------------------
VINOTH ------------------------------------- do_load -------------------------- str: mmc, str2: 2:1
VINOTH ------------------------------------- fs_set_blk_dev -------------------------- file name is: mmc
VINOTH ++++++++++++++ validate_gpt_header ++++++++++++++++++
VINOTH ------------------------------------- fat_set_blk_dev -------------------------- name: rootfs, size is 0x200
VINOTH ------------------------------------- fat_set_blk_dev -------------------------- buffer is: (00000000baf1ab00) , DOS_BOOT_MAGIC_OFFSET: 0x1fe
VINOTH ------------------------------------- fat_set_blk_dev -------------------------- buffer: (00000000baf1acfe)
** Unrecognized filesystem type **
VINOTH ------------------------------------- do_load -------------------------- return 1
VINOTH ------------------------------------- do_fat_fsload --------------------------
VINOTH ------------------------------------- do_load --------------------------
VINOTH ------------------------------------- do_load -------------------------- str: mmc, str2: 2:1
VINOTH ------------------------------------- fs_set_blk_dev -------------------------- file name is: mmc
VINOTH ++++++++++++++ validate_gpt_header ++++++++++++++++++
VINOTH ------------------------------------- fat_set_blk_dev -------------------------- name: rootfs, size is 0x200
VINOTH ------------------------------------- fat_set_blk_dev -------------------------- buffer is: (00000000baf1aa40) , DOS_BOOT_MAGIC_OFFSET: 0x1fe
VINOTH ------------------------------------- fat_set_blk_dev -------------------------- buffer: (00000000baf1ac3e)
** Unrecognized filesystem type **
VINOTH ------------------------------------- do_load -------------------------- return 1

My Script,

### GPT partition layout
#
# 32M /boot
# MAX /
FB: ucmd setenv partitions 'uuid_disk=${uuid_gpt_disk};name=boot,size=32M,start=1MiB,uuid=${uuid_boot};name=rootfs,size=MAX,uuid=0cc66cc0-5458-384d-1610-726f6f746673;'
FB: ucmd gpt write mmc ${emmc_dev} ${partitions}

FB: ucmd setenv fastboot_dev mmc
FB: ucmd setenv mmcdev ${emmc_dev}
FB: ucmd mmc dev ${emmc_dev}

FB: flash boot imx-boot
FB: flash -raw2sparse rootfs  _rootfs.sdcard

[jimmychan]

Could you tell me the steps for reproducing this issue?

Thanks.