Mity CPU Platforms » MityDSP-L138 (ARM9 Based Platforms)

03/12/2018

JC 05:46 PM Software Development: RE: Linux Boot Parameter and NAND Partition

Okan Çalış wrote:
> I know I can do that. _(You suggested doing so when we realized, the kernel on the custom board listed the MTD partitions differently than configured in U-Boot. It's the same problem, but still, MityDsp can boot to L... Jonathan Cormier

OÇ 01:31 PM Software Development: RE: Linux Boot Parameter and NAND Partition

Also, when I issue a "@cat /proc/mtd@" with NFS, it prints only the SPI partitions starting from @mtd0@; it doesn't print @rootfs@ and @homefs@. Okan Çalış

OÇ 08:16 AM Software Development: RE: Linux Boot Parameter and NAND Partition

I know I can do that. _(You suggested doing so when we realized, the kernel on the custom board listed the MTD partitions differently than configured in U-Boot. It's the same problem, but still, MityDsp can boot to Linux, while the custo... Okan Çalış

03/09/2018

JC 02:00 PM Software Development: RE: Linux Boot Parameter and NAND Partition

You can manually update the nand partition tables by changing the file arch/arm/mach-davinci/board-mityomapl138.c and look for @mityomapl138_nandflash_partition@. Jonathan Cormier

OÇ 05:20 AM Software Development: RE: Linux Boot Parameter and NAND Partition

> Where did you print out this partition table?
From the @mtdparts@ command of the U-Boot. It is also consistent with environment variable of the same name.
> ...
As you suspected, the MTD partitions listed by Linux don't match tho... Okan Çalış

03/08/2018

JC 02:41 PM Software Development: RE: Linux Boot Parameter and NAND Partition

Okan Çalış wrote:
> Hi,
> ...
Where did you print out this partition table?
> @device nand0 <nand>, # parts = 3
> ...
Yes I agree with you. Given that parition table, I would expect you to have to use mtdblock1.
Can you run @cat... Jonathan Cormier

OÇ 12:49 PM Software Development: Linux Boot Parameter and NAND Partition

Hi,
I have a general question about Linux on MityDsp, which might help me solve "the problem I consulted you about before.":https://support.criticallink.com/redmine/boards/10/topics/5615
On my MityDsp, the NAND flash is partitioned... Okan Çalış

02/22/2018

JC 03:12 PM Software Development: RE: Kernel panics on custom board: "No init found. Try passing init= option to kernel"

Okan Çalış wrote:
> Hi Jonathan, thanks for your reply.
> ...
I suggest you do some research into nand and ECC. This might be a good starting place.
http://www.linux-mtd.infradead.org/doc/nand.html
>
> ...
We are not familiar with... Jonathan Cormier

OÇ 12:07 PM Software Development: RE: Kernel panics on custom board: "No init found. Try passing init= option to kernel"

Hi Jonathan, thanks for your reply.
> The kernel and u-boot both have to use the same ECC strength.
I'm afraid I have no idea what an ECC strength is. I've read "this documentation,":https://www.kernel.org/doc/Documentation/devicet... Okan Çalış

02/21/2018

JC 02:14 PM Software Development: RE: Kernel panics on custom board: "No init found. Try passing init= option to kernel"

Okan Çalış wrote:
> Hi,
> ...
The kernel and u-boot both have to use the same ECC strength. You can possibly use our kernel if you can figure out how to configure the nand correctly but I don't think we can be of much help here.
>
... Jonathan Cormier

OÇ 07:38 AM Software Development: RE: Kernel panics on custom board: "No init found. Try passing init= option to kernel"

Hi,
I couldn't reply sooner because I've been handling some other kernel-related problems by using NFS as a temporary solution.
The custom board is rather similar to Critical Link's MityDsp-L138F in terms of included peripherals et... Okan Çalış