Flashing Image using 'pflash' Tool

Flashing Image using 'pflash' Tool

[AKASH G J]

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I tried to flash kernel image *fitImage.bin* to the flash memory address
*0x20100000* using the following command.

root@zaius:/var# *pflash -a 0x20100000 -f -p fitImage.bin *

It exited with following error.



*About to program "fitImage.bin" at 0x20100000..0x20371e20 !Programming &
Verifying...[                                                  ] 0%Flash
write error 3 for chunk at 0x20100000*

Please someone help to resolve the problem.

Thanks and Regards ,

Akash G J

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Re: Flashing Image using 'pflash' Tool

[Lei YU]

On Thu, Nov 8, 2018 at 6:05 PM AKASH G J <akashgj91@gmail.com> wrote:
>
> I tried to flash kernel image fitImage.bin to the flash memory address 0x20100000 using the following command.
>
> root@zaius:/var# pflash -a 0x20100000 -f -p fitImage.bin
>
> It exited with following error.
>
> About to program "fitImage.bin" at 0x20100000..0x20371e20 !
> Programming & Verifying...
> [                                                  ] 0%Flash write error 3 for chunk at 0x20100000
>
> Please someone help to resolve the problem.

1. pflash defaults to operate on the PNOR chip. If you want to flash the BMC
   chip, you need "-b" argument.
2.To program a flash area, you need to erase before writing, so you need "-e"
   argument.

Putting together, you command should look like:
pflash -b -e -a 0x20100000 -f -p fitImage.bin

Re: Flashing Image using 'pflash' Tool

[AKASH G J]

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I tried the command *pflash -b -e -a 0x20100000 -f -p fitImage.bin*

It is showing the following error.





*WARNING: Erase at 0x20100000 for 0x00271e20 isn't erase block
aligned           About to erase 0x20100000..0x20371e20
!
Erasing...
[                                                  ] 0%mtd_erase: IOCTL to
kerntFailed to blocklevel_smart_erase(): 3 *

On Fri, Nov 9, 2018 at 9:22 AM Lei YU <mine260309@gmail.com> wrote:

> On Thu, Nov 8, 2018 at 6:05 PM AKASH G J <akashgj91@gmail.com> wrote:
> >
> > I tried to flash kernel image fitImage.bin to the flash memory address
> 0x20100000 using the following command.
> >
> > root@zaius:/var# pflash -a 0x20100000 -f -p fitImage.bin
> >
> > It exited with following error.
> >
> > About to program "fitImage.bin" at 0x20100000..0x20371e20 !
> > Programming & Verifying...
> > [                                                  ] 0%Flash write error
> 3 for chunk at 0x20100000
> >
> > Please someone help to resolve the problem.
>
> 1. pflash defaults to operate on the PNOR chip. If you want to flash the
> BMC
>    chip, you need "-b" argument.
> 2.To program a flash area, you need to erase before writing, so you need
> "-e"
>    argument.
>
> Putting together, you command should look like:
> pflash -b -e -a 0x20100000 -f -p fitImage.bin
>

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Re: Flashing Image using 'pflash' Tool

[AKASH G J]

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Is there any other utility in OpenBMC Linux for writing a file to a
specified address in flash memory?

On Fri, Nov 9, 2018 at 2:26 PM AKASH G J <akashgj91@gmail.com> wrote:

> I tried the command *pflash -b -e -a 0x20100000 -f -p fitImage.bin*
>
> It is showing the following error.
>
>
>
>
>
> *WARNING: Erase at 0x20100000 for 0x00271e20 isn't erase block
> aligned           About to erase 0x20100000..0x20371e20
> !
> Erasing...
> [                                                  ] 0%mtd_erase: IOCTL to
> kerntFailed to blocklevel_smart_erase(): 3 *
>
> On Fri, Nov 9, 2018 at 9:22 AM Lei YU <mine260309@gmail.com> wrote:
>
>> On Thu, Nov 8, 2018 at 6:05 PM AKASH G J <akashgj91@gmail.com> wrote:
>> >
>> > I tried to flash kernel image fitImage.bin to the flash memory address
>> 0x20100000 using the following command.
>> >
>> > root@zaius:/var# pflash -a 0x20100000 -f -p fitImage.bin
>> >
>> > It exited with following error.
>> >
>> > About to program "fitImage.bin" at 0x20100000..0x20371e20 !
>> > Programming & Verifying...
>> > [                                                  ] 0%Flash write
>> error 3 for chunk at 0x20100000
>> >
>> > Please someone help to resolve the problem.
>>
>> 1. pflash defaults to operate on the PNOR chip. If you want to flash the
>> BMC
>>    chip, you need "-b" argument.
>> 2.To program a flash area, you need to erase before writing, so you need
>> "-e"
>>    argument.
>>
>> Putting together, you command should look like:
>> pflash -b -e -a 0x20100000 -f -p fitImage.bin
>>
>

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Re: Flashing Image using 'pflash' Tool

[Adriana Kobylak]

On 2018-11-12 06:21, AKASH G J wrote:
> Is there any other utility in OpenBMC Linux for writing a file to a
> specified address in flash memory?

The pflash error "isn't erase block aligned" appears when the check for
64k erase blocks is turned on, and the specified address (0x20100000 in
this case) isn't 64k aligned. There may be more details about if there's
a way to switch this check on and off in the skiboot mailing list
(https://github.com/open-power/skiboot) where the pflash tool 
originates.

An alternate tool would be "dd"
(http://man7.org/linux/man-pages/man1/dd.1.html).
The command could look like:
dd if=fitImage.bin of=/dev/mtd0 --skip=0x20100000 -bs=1

Re: Flashing Image using 'pflash' Tool

[Cédric Le Goater]

On 11/8/18 11:04 AM, AKASH G J wrote:
> I tried to flash kernel image /fitImage.bin/ to the flash memory address /0x20100000/ using the following command.


If you are trying to flash a custom BMC kernel only and bypassing 
the standard procedure to do so, you should update the correct
MTD device with dd or flashcp.

	# cat /proc/mtd 
	dev:    size   erasesize  name
	mtd0: 02000000 00010000 "bmc"
	mtd1: 00060000 00010000 "u-boot"
	mtd2: 00020000 00010000 "u-boot-env"
	mtd3: 00440000 00010000 "kernel"
	mtd4: 01740000 00010000 "rofs"
	mtd5: 00400000 00010000 "rwfs"
	mtd6: 02000000 00010000 "pnor"

I don't have a zaius but it should be roughly similar.  

Cheers,

C.


> root@zaius:/var# /pflash -a 0x20100000 -f -p fitImage.bin /
> 
> It exited with following error.
> 
> /About to program "fitImage.bin" at 0x20100000..0x20371e20 !
> Programming & Verifying...
> [                                                  ] 0%Flash write error 3 for chunk at 0x20100000/
> /
> /
> Please someone help to resolve the problem.
> //
> 
> Thanks and Regards ,
> 
> Akash G J