[U-Boot] U-Boot: U-Boot 2010.06 doesn't boot from NAND Flash on AMCC Sequoia

[YURI ZHARIKOV]

Dear Stefan:

Thank you for fast answer.

Our next problem consists in flashing the NAND without any U-Boot 
version, for our own developed system based on AMCC Sequoia board. The 
most important modifications in our board are:
- We removed from the original Sequoia design: NOR Flash, CPLD, USB 
ports and the second serial port. - We increased NAND FLASH size to 2Gb 
(NAND02GW3B2DN6E and MT29F2G08AADWP-ET:D TR in the next revision of our 
board).
- We decreased RAM size to 128MB.

Logically, we need that PPC boots from NAND Flash, and we use 
Lauterbach LA-7708 Debugger for program NAND. But now, without any 
previous U-Boot version, how can we apply the environment commands that 
you specify in your answer? Are there any configuration limitations 
that we must consider?

Thanks and Regards,

**********************

Hi Yuri,

On Monday 26 July 2010 19:21:16 YURI ZHARIKOV wrote:
[Ocultar texto citado]
> We are Microelectronic Design and Applications (DMA) research group
> from University Carlos III of Madrid (Spain). At the moment, we are
> developing our own computational hardware platform, based on AMCC
> Sequoia board.
>
> In the past, we used U-Boot 1.3.3 with AMCC Sequoia board, and PPC
> booted fine from NAND Flash. At the moment, with the same configuration
> of bootstrap (533MHz, NAND Boot, 33Mhz PCI) we are trying to use the
> last version of U-Boot (2010.06) on AMCC Sequoia board. But PPC doesn’t
> boot well, because there aren’t any information on HyperTerminal.
>
> We use ELDK 4.2 for compiling U-Boot 2010.06 nand image on the same way
> that we did it for U-Boot 1.3.3:
> $ export CROSS_COMPILE=ppc_4xxFP-
> $ PATH=$PATH:/opt/eldk/usr/bin:/opt/eldk/bin
> $ cd u-boot
> $ make distclean
> $ make sequoia_nand_config
> $ make all
>
> We boot PPC from NOR FLASH with previous version of U-Boot, and then we
> program NAND Flash memory with U-Boot 2010.06 nand image. We also use
> the same commands to do it that we used with U-Boot 1.3.3:
> => loadb 100000  /* transfer the U-Boot image */ => nand erase ENTER
> => nand write 100000 0 70000 ENTER
>
> After that, we put J2 jumper and select SW2 (OFF-OFF-OFF-OFF).
>
> Are we missing something?

I just tested the latest U-Boot version from the mainline git 
repository (master branch). NOR and NAND booting works just fine on 
Sequoia:

U-Boot 2010.06-00236-g7385c28 (Aug 02 2010 - 13:07:47)

CPU:   AMCC PowerPC 440EPx Rev. A at 495 MHz (PLB=165 OPB=82 EBC=55 
PCI=41 MHz)
       Security/Kasumi support
       Bootstrap Option H - Boot ROM Location I2C (Addr 0x52), booting 
from NAND
       Internal PCI arbiter enabled, PCI async ext clock used
       32 kB I-Cache 32 kB D-Cache
Board: Sequoia - AMCC PPC440EPx Evaluation Board, Rev. F, PCI-Async=33 MHz
I2C:   ready
DRAM:  256 MiB
FLASH: 64 MiB
NAND:  32 MiB
*** Warning - bad CRC, using default environment

PCI:   Bus Dev VenId DevId Class Int
USB:   Host(int phy) Device(ext phy)
DTT:   1 is 28 C
Net:   No ethernet found.


As you can see, I'm still using bootstrap option H (I2C EEPROM at 
0x52). Easiest to do this is to use the "chip_config" command to 
reconfigure the bootstrap values for NAND (and/or NOR):

=> chip_config
Available configurations (I2C address 0x52):
333-133-nor      - NOR  CPU: 333 PLB: 133 OPB:  66 EBC:  66
333-166-nor      - NOR  CPU: 333 PLB: 166 OPB:  83 EBC:  55
333-166-nand     - NAND CPU: 333 PLB: 166 OPB:  83 EBC:  55
400-133-nor      - NOR  CPU: 400 PLB: 133 OPB:  66 EBC:  66
400-160-nor      - NOR  CPU: 400 PLB: 160 OPB:  80 EBC:  53
416-166-nor      - NOR  CPU: 416 PLB: 166 OPB:  83 EBC:  55
416-166-nand     - NAND CPU: 416 PLB: 166 OPB:  83 EBC:  55
500-166-nor      - NOR  CPU: 500 PLB: 166 OPB:  83 EBC:  55
500-166-nand     - NAND CPU: 500 PLB: 166 OPB:  83 EBC:  55 ***
533-133-nor      - NOR  CPU: 533 PLB: 133 OPB:  66 EBC:  66
667-133-nor      - NOR  CPU: 667 PLB: 133 OPB:  66 EBC:  66
667-166-nor      - NOR  CPU: 667 PLB: 166 OPB:  83 EBC:  55
667-166-nand     - NAND CPU: 667 PLB: 166 OPB:  83 EBC:  55


So you don't need to change the SW2 DIP switch. Only J2 is needed after 
boostrap EEPROM changes.

And here my environment commands for flashing the NAND U-Boot version:

=> printenv nload nupdate nupd
nload=tftp 200000 sequoia/u-boot-nand.bin
nupdate=nand erase 0 100000;nand write 200000 0 100000;setenv filesize;saveenv
nupd=run nload nupdate



Cheers,
Stefan


------------------------------------------
Yuri Zharikov

Departamento de Tecnología Electrónica
Universidad Carlos III de Madrid
1.2.A06 BIS
E-mail: yzhariko at ing.uc3m.es
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