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MityARM - ECC: uncorrectable
Added by Angelos Spanos over 9 years ago
Hi,
I have a MityARM card.
I try to flash the NAND memory according to the guidelines that are given for the MitySOM, here. My write sequence is the following:
nand erase.chip
setenv mmc_index 0
setenv mlo_file_name MLO
setenv u_boot_img_file_name u-boot.img
setenv kernel_file_name openwrt-omap-uImage
setenv fs_file_name ubi.img
setenv dtb_file_name am335x-mitysom.dtb
setenv kloadaddr 0x80007fc0
setenv mlo_size 0xeaec
setenv u_boot_img_size 0x714F0
setenv kernel_size 0x221758
setenv fs_size 0xA00000
setenv dtb_size 0x7d31
setenv spl_partition_size 0x020000
setenv u_boot_partition_size 0x200000
setenv kernel_partition_size 0x500000
setenv fs_partition_size 0xF00000
setenv dtb_partition_size 0x080000
setenv spl_partition_address 0x00000000
setenv spl_backup_1_partition_address 0x00020000
setenv spl_backup_2_partition_address 0x00040000
setenv spl_backup_3_partition_address 0x00060000
setenv u_boot_partition_address 0x00080000
setenv kernel_partition_address 0x00280000
setenv fs_partition_address 0x00740000
setenv dtb_partition_address 0x0FF80000
setenv dtb_ram_adress 0x80F80000
setenv bootargs 'console=ttyO0,115200n8 root=/ rw ubi.mtd=7,4096 noinitrd rootfstype=ubifs rootwait=1 ip=none
setenv bootcmd 'nandecc hw 1; nand read.i ${dtb_ram_adress} ${dtb_partition_address} ${dtb_size}; nand read.i ${kloadaddr} ${kernel_partition_address} ${kernel_partition_size}; bootm ${kloadaddr} - ${dtb_ram_adress}'
saveenv
# Flash MLO to NAND
mw.b ${kloadaddr} ff ${spl_partition_size}
fatload mmc ${mmc_index} ${kloadaddr} ${mlo_file_name}
nand write.i ${kloadaddr} ${spl_partition_address} ${mlo_size}
nand write.i ${kloadaddr} ${spl_backup_1_partition_address} ${mlo_size}
nand write.i ${kloadaddr} ${spl_backup_2_partition_address} ${mlo_size}
nand write.i ${kloadaddr} ${spl_backup_3_partition_address} ${mlo_size}
# Flash U-boot to NAND
mw.b ${kloadaddr} ff ${u_boot_partition_size}
fatload mmc ${mmc_index} ${kloadaddr} ${u_boot_img_file_name}
nand write.i ${kloadaddr} ${u_boot_partition_address} ${u_boot_img_size}
# Flash Kernel to NAND
mw.b ${kloadaddr} ff ${kernel_partition_size}
fatload mmc ${mmc_index} ${kloadaddr} ${kernel_file_name}
nand write.i ${kloadaddr} ${kernel_partition_address} ${kernel_size}
# Flash Filesystem to NAND
mw.b ${kloadaddr} 0xFF ${fs_partition_size}
ext2load mmc ${mmc_index}:2 ${kloadaddr} ${fs_file_name}
nand write.i ${kloadaddr} ${fs_partition_address} ${fs_size}
# Flash Device Tree Binary to NAND
mw.b ${kloadaddr} ff 0x80000
fatload mmc ${mmc_index} ${kloadaddr} ${dtb_file_name}
nand write.i ${kloadaddr} ${dtb_partition_address} ${dtb_size}
reset
However during read, the following errros appear:
nand read.i ${dtb_ram_adress} ${dtb_partition_address} ${dtb_size}
NAND read: device 0 offset 0xff80000, size 0x7d31
ECC: uncorrectable.
ECC: uncorrectable.
ECC: uncorrectable.
...
ECC: uncorrectable.
NAND read from offset ff80000 failed -74
0 bytes read: ERROR
My questions are the folloowing:
- Is MityARM still supported?
- Is my write sequence correct?
- Can you spot why the ECC errors occur based on the pre-described write-read sequence?
Replies (4)
RE: MityARM - ECC: uncorrectable - Added by Jonathan Cormier over 9 years ago
Which module do you have?
What u-boot version are you using? Can you provide the bootlog from power on till you get into u-boot?
RE: MityARM - ECC: uncorrectable - Added by Angelos Spanos over 9 years ago
The bootlog is this:
U-Boot SPL 2013.10-ged374e1 (Jul 15 2015 - 10:17:27) MitySOM335x profile 1 - Model No: 3352-HX-X27-RC Serial No: 14008177 Critical Link: Error u-boot compiled for large page nand support. Nand may not function correctly. Configuring for 256 MB DDR3 @ 400MHz Critical Link AM335X Dev Kit -- NAND Page size = 4096k booting from dev 8 reading u-boot.img reading u-boot.img U-Boot 2013.10-ged374e1 (Jul 15 2015 - 10:17:27) AM335X-GP rev 2 I2C: ready DRAM: 256 MiB WARNING: Caches not enabled Critical Link: Error u-boot compiled for large page nand support. Nand may not function correctly. NAND: Using 4k bch16 layout
The tag writes:
14008177 3352-HX-X27-RC 80-000597RC-2
RE: MityARM - ECC: uncorrectable - Added by Jonathan Cormier over 9 years ago
I tried to be as explicit as possible but the following error "Critical Link: Error u-boot compiled for large page nand support. Nand may not function correctly." indicates that the u-boot your using is configured for the 512MB nand bch16 ECC. You need a u-boot built for the 256MB nand.
If you would like a prebuilt u-boot check here on how to download and flash the correct image: https://support.criticallink.com/redmine/projects/armc8-platforms/wiki/Creating_an_SD_Card#TI-SDK-Release
To build it yourself and to get the latest code see here: https://support.criticallink.com/redmine/projects/armc8-platforms/wiki/Das_U-Boot_Port#Building-u-Boot
RE: MityARM - ECC: uncorrectable - Added by Angelos Spanos over 9 years ago
Thanks. This has fixed this problem.
