Hi Colin,
On 19/05/2023 02:19, Colin Foster wrote:
Hi Roger,
I really appreciate the help!
On Thu, May 18, 2023 at 01:55:38PM +0300, Roger Quadros wrote:
Hi Colin,
On 17/05/2023 22:39, Colin Foster wrote:
I swapped in just U-Boot (not the SPL) with your patch, and everything seems to work!
The issue of Uncorrectable ECC errors spam came from the SPL. Here's a snippet of the boot log with the "ecc" print as well as your patch:
Thanks for the tests. Glad to hear issue is narrowed down to SPL.
I can "fix" the issue by just commenting out the "ECC uncorrectable errors" print :-)
lol
U-Boot SPL 2023.04-00029-g26a9ce5314-dirty (May 17 2023 - 12:06:49 -0700) OMAP4460-GP ES1.1 Trying to boot from NAND ecc: 2420106 ecc: ebd922f6 ecc: 333f844f ecc: ab812f72
This is clearly the issue. They should all have been 0.
Interesting. With the "ecc" prints in U-Boot I also get some non-zero values:
ecc: 0 ecc: 6bff997b ecc: 6bff997b ecc: 6bff997b
Once I'm booted, I can use nanddump. It seems like everything is correct from the Linux side of things:
# nanddump -f mlo_dump /dev/mtd0 ECC failed: 0 ECC corrected: 0 Number of bad blocks: 0 Number of bbt blocks: 0 Block size 131072, page size 2048, OOB size 64 Dumping data starting at 0x00000000 and ending at 0x00020000...
# nanddump -f uboot1_dump /dev/mtd1 ECC failed: 0 ECC corrected: 0 Number of bad blocks: 0 Number of bbt blocks: 0 Block size 131072, page size 2048, OOB size 64 Dumping data starting at 0x00000000 and ending at 0x00180000...
# nanddump -f uboot2_dump /dev/mtd2 ECC failed: 0 ECC corrected: 0 Number of bad blocks: 0 Number of bbt blocks: 0 Block size 131072, page size 2048, OOB size 64 Dumping data starting at 0x00000000 and ending at 0x00180000...
# nanddump -f /dev/null /dev/mtd3 ECC failed: 0 ECC corrected: 6 Number of bad blocks: 0 Number of bbt blocks: 0 Block size 131072, page size 2048, OOB size 64 Dumping data starting at 0x00000000 and ending at 0x1fce0000... ECC: 1 corrected bitflip(s) at offset 0x0ab30800 ECC: 1 corrected bitflip(s) at offset 0x0b008800 ECC: 1 corrected bitflip(s) at offset 0x0deaa000 ECC: 1 corrected bitflip(s) at offset 0x0ea5b000 ECC: 1 corrected bitflip(s) at offset 0x0ecbc000 ECC: 1 corrected bitflip(s) at offset 0x0ed61800
Can you please share your spl/u-boot.cfg?
Attached
Couple of questions there
1) CONFIG_MTDPARTS_DEFAULT "mtdparts=nandflash:0x20000(xload_raw),0x180000(u-boot),0x180000(u-boot-2),0x1fce0000(main)" Is this correct and matches with what kernel sees? I couldn't see the NAND partition table in the Kernel Device tree patch.
2) #define CONFIG_SYS_NAND_U_BOOT_OFFS 0x20000 #define CONFIG_SYS_NAND_U_BOOT_OFFS_REDUND 0x1a0000
These don't seem to match what you have defined in MTDPARTS_DEFAULT. Which one is correct?
How do you flash the MLO and u-boot image to NAND?
I tried on AM335x-EVM and it works fine both before and after commit 04fcd25873.
Once change I had to do was to increase the u-boot partition size as u-boot image does not fit in original partition size.
-----boot log follows-----
U-Boot SPL 2023.01-rc4-00381-g04fcd25873-dirty (May 19 2023 - 15:10:15 +0300) Trying to boot from NAND
U-Boot 2023.01-rc4-00381-g04fcd25873-dirty (May 19 2023 - 15:10:15 +0300)
CPU : AM335X-GP rev 1.0 Model: TI AM335x EVM DRAM: 512 MiB Core: 156 devices, 17 uclasses, devicetree: separate WDT: Started wdt@44e35000 with servicing every 1000ms (60s timeout) NAND: 256 MiB MMC: OMAP SD/MMC: 0 Loading Environment from FAT... Unable to read "uboot.env" from mmc0:1... <ethaddr> not set. Validating first E-fuse MAC Net: eth2: ethernet@4a100000, eth3: usb_ether Hit any key to stop autoboot: 0 =>
=> mtd
device nand0 <nand.0>, # parts = 10 #: name size offset mask_flags 0: NAND.SPL 0x00020000 0x00000000 0 1: NAND.SPL.backup1 0x00020000 0x00020000 0 2: NAND.SPL.backup2 0x00020000 0x00040000 0 3: NAND.SPL.backup3 0x00020000 0x00060000 0 4: NAND.u-boot-spl-os 0x00040000 0x00080000 0 5: NAND.u-boot 0x00200000 0x000c0000 0 6: NAND.u-boot-env 0x00020000 0x002c0000 0 7: NAND.u-boot-env.backup10x00020000 0x002e0000 0 8: NAND.kernel 0x00700000 0x00300000 0 9: NAND.file-system 0x0f600000 0x00a00000 0