How to program the NOR flash of the LS2085 from U-Boot?

[mkiradzhiyski]

Hello everybody,

I am looking for a way to reprogram the NOR flash of the LS2085A-RDB from U-Boot. I'm particularly interested in updating the Management Complex firmware version from 7.0.3 to 8.0.2, because we are getting a version inconsistency error while booting the Linux kernel:

[	0.280076] fsl_mc_bus 80c000000.fsl-mc: Freescale Management Complex Firmware version: 7.0.3
[	0.280082] fsl_mc_bus 80c000000.fsl-mc: ERROR: MC firmware version not supported by driver (driver version: 8.0)

I'm assuming this causes the /dev/mc-restool device to not be created.

I found a suggestion for using CodeWarrior Flash Programmer to reprogram the NOR flash, but I'm wondering if this can be done from U-Boot.

Thanks!

Best regards,

Miroslav

[addiyi · Accepted solution]

Hi Miroslav,

Both CodeWarrior Flash Programmer and uboot can be used for programming MC firmware.

From uboot, you have to load the MC firmware into RAM (from a tftp server) and program it to NOR flash (bank 0) from address 0x5_8030_0000.

An example is provided below:

tftp a0000000 /path_from_tftp_server/mc_firmware.bin

erase 580300000 +$filesize

cp.b a0000000 580300000 $filesize

From Flash Programmer, take a look on Targeting Manual (CW_ARMv8\ARMv8\Help\PDF\), Chapter 7. Note that in Flash Programmer offset is used instead of full address.

Adrian

[mkiradzhiyski]

Thank you, Adrian,

We managed to flash the firmware binary (it should be a FIT image)and also the DPL and DPC binaries, but we are currently facing another problem:

ERROR: Firmware major version mismatch (found: 8, expected: 7)

The U-Boot now complains about firmware version mismatch, which I guess is because everything else is up-to-date, except for the U-Boot.

We have the u-boot-nor-2015.07+fslgit-r0.bin binary. My question is where in the NOR flash should this be placed?

Thank you once again!

Best regards,
Miroslav

[addiyi]

Uboot must be programmed starting with 0x5_8010_0000.

Adrian

[mkiradzhiyski]

Thank you, Adrian.

Now we are facing another problem. When trying to program the NOR with U-Boot, an error about writing to protected sectors appears. The size of the U-Boot we use is 570941 bytes.

Can you give us any hints on why this is happening or what we are doing wrong?
Thank you!

Best regards,

Miroslav

[addiyi]

Before programming new u-boot into the NOR, you have to unprotect the sectors where uboot is placed, using protect command, something like below:

=> protect off 0x580100000 <end_addr>

Adrian

[mkiradzhiyski]

Thank you, Adrian!

We managed to reflash everything needed and boot the board. :smileyhappy:

Best regards,

Miroslav