[U-Boot] mtd partitions go away

[Marek Vasut]

On 11/15/2018 11:14 AM, Heiko Schocher wrote:
> Hello all,
> 
> just see with current HEAD of u-boot on an imx6ull based board with SPI NOR
> and NAND following behaviour:

+CC Boris, since he was recently looking into this stuff.

> => mtdparts
> 
> device nand0 <gpmi-nand>, # parts = 1
>  #: name                size            offset          mask_flags
>  0: ubi                 0x08000000      0x00000000      0
> 
> device nor0 <spi1.0>, # parts = 5
>  #: name                size            offset          mask_flags
>  0: spl                 0x00010000      0x00000000      0
>  1: u-boot              0x000c0000      0x00010000      0
>  2: env                 0x00010000      0x000d0000      0
>  3: env-red             0x00010000      0x000e0000      0
>  4: rescue              0x00710000      0x000f0000      0
> 
> active partition: nand0,0 - (ubi) 0x08000000 @ 0x00000000
> 
> defaults:
> mtdids  : nand0=gpmi-nand,nor0=spi1.0
> mtdparts:
> mtdparts=gpmi-nand:-(ubi);spi1.0:64k(spl),768k(u-boot),64k(env),64k(env-red),-(rescue)
> 
> =>
> 
> => mtd list
> List of MTD devices:
> * nand0
>   - type: NAND flash
>   - block size: 0x20000 bytes
>   - min I/O: 0x800 bytes
>   - OOB size: 64 bytes
>   - OOB available: 0 bytes
>   - ECC strength: 8 bits
>   - ECC step size: 512 bytes
>   - bitflip threshold: 6 bits
>   - 0x000000000000-0x000008000000 : "nand0"
>           - 0x000000000000-0x000008000000 : "ubi"
> * nor0
>   - type: NOR flash
>   - block size: 0x10000 bytes
>   - min I/O: 0x1 bytes
>   - 0x000000000000-0x000000800000 : "nor0"
>           - 0x000000000000-0x000000010000 : "spl"
>           - 0x000000010000-0x0000000d0000 : "u-boot"
>           - 0x0000000d0000-0x0000000e0000 : "env"
>           - 0x0000000e0000-0x0000000f0000 : "env-red"
>           - 0x0000000f0000-0x000000800000 : "rescue"
> 
> until here all is fine, for example an "ubi part ubi" works as
> expected ... also doing this command n times, no problems.
> 
> Now:
> 
> => sf probe
> SF: Detected s25f064l with page size 256 Bytes, erase size 64 KiB, total
> 8 MiB
> => mtd list
> List of MTD devices:
> * nand0
>   - type: NAND flash
>   - block size: 0x20000 bytes
>   - min I/O: 0x800 bytes
>   - OOB size: 64 bytes
>   - OOB available: 0 bytes
>   - ECC strength: 8 bits
>   - ECC step size: 512 bytes
>   - bitflip threshold: 6 bits
>   - 0x000000000000-0x000008000000 : "nand0"
>           - 0x000000000000-0x000008000000 : "ubi"
> * nor0
>   - type: NOR flash
>   - block size: 0x10000 bytes
>   - min I/O: 0x1 bytes
>   - 0x000000000000-0x000000800000 : "nor0"
> =>
> 
> All MTD devices on nor0 are gone ... also the previous working
> "ubi part ubi" fails ...
> 
> Adding debug code:
> 
> mtd_for_each_device(other)
>     printf("%s ===== %s\n", __func__, other->name);
> 
> shows only:
> 
> get_mtd_device_nm ===== nand0
> get_mtd_device_nm ===== nor0
> 
> ?
> 
> Anyone sees this behaviour too?
> 
> Any hints?
> 
> bye,
> Heiko


-- 
Best regards,
Marek Vasut