On 22/08/19, Oliver Graute wrote:
Hello list,
I have a annoying problem with u-boot 2019.07. I try to boot a Linux Image from a fat16 partition on a SD-Card. But I got the "Error reading cluster" Message from fs/fat/fat.c
=> boot switch to partitions #0, OK mmc2 is current device Error reading cluster ** Unable to read file Image **
=> mmc part Partition Map for MMC device 2 -- Partition Type: DOS Part Start Sector Num Sectors UUID Type 1 16384 266240 d38187c8-01 06 2 282624 7491584 d38187c8-02 83
After some debugging I end up in blk_dread() from drivers/block/blk-uclass.c
blks_read = ops->read(dev, start, blkcnt, buffer);
here I got blks_read=0 which seems is the cause for the "Error reading cluster" later in get_cluster().
After some more digging I found out that this error is related to the file size. I can fatload files up to 16MB but no files with 24MB like the Kernel Image. Is there some limitation somewhere?
U-Boot 2019.07-00001-g1c0a4f90ca-dirty (Aug 26 2019 - 08:36:06 +0200)
CPU: NXP i.MX8QM RevB A53 at 1200 MHz
Model: Advantech iMX8QM Qseven series Board: ROM-7720-A1 4GB Build: SCFW 65afe5f6 Boot: SD2 DRAM: 3.9 GiB MMC: FSL_SDHC: 0, FSL_SDHC: 2 Loading Environment from MMC... *** Warning - bad CRC, using default environment
In: serial@5a060000 Out: serial@5a060000 Err: serial@5a060000 Net: eth0: ethernet@5b040000Could not get PHY for FEC1: addr 1 , eth-1: ethernet@5b050000 Hit any key to stop autoboot: 0 => fatls mmc 2:1 dtbs/ 24838656 Image 10671566 Image.gz 18734584 initramfs-linux-fallback.img 7263143 initramfs-linux.img 19136 imx8qm-rom7720-a1.dtb 102464 hdmitxfw.bin 1048576 1mb.txt 2097152 2MB.txt 524288 512kb.txt 786432 768kb.txt 16777216 16MB.txt 25165824 24MB.txt 4194304 4MB.txt 8388608 8MB.txt
14 file(s), 1 dir(s)
=> fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} 512kb.txt 524288 bytes read in 33 ms (15.2 MiB/s) => fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} 768kb.txt 786432 bytes read in 43 ms (17.4 MiB/s) => fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} 1mb.txt 1048576 bytes read in 58 ms (17.2 MiB/s) => fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} 2mb.txt 2097152 bytes read in 98 ms (20.4 MiB/s) => fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} 4mb.txt 4194304 bytes read in 190 ms (21.1 MiB/s) => fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} 8mb.txt 8388608 bytes read in 365 ms (21.9 MiB/s) => fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} 16mb.txt 16777216 bytes read in 724 ms (22.1 MiB/s) => fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} 24mb.txt Error reading cluster 3 ** Unable to read file 24mb.txt ** =>
Best regards,
Oliver