Problem about modify the NOR's base address in Codewarrior

[敏赵]

Hi,

We are using p2020rdb-pc booting from NOR. To understand the board deeply I have made some attempts. But I encountered some problems

I want to modify the NOR's base address to 5f000000. So I modify relevant files in codewarrior.

1) In p2020rdb-pc_int_core_tcl

  # LAWBAR0 - Local Bus

  # bit 8 - 31 = 0xFF000000 - base addr

  mem [CCSR 0xc08] = 0x000ff000--------->mem [CCSR 0xc08] = 0x0005f000

# boot from nor gpcm 16 bit boot location (default)

  # CS0 - NOR Flash

  # BR0 base address at 0xFF000000, port size 16 bit, GPCM, DECC disabled

  mem [CCSR 0x5000] = 0xFF001001 ---------> mem [CCSR 0x5000] = 0x5F001001

2) In p2020rdb-pc_int.c

// 16MB TLB1 entry 2 - Local Bus : 0xFF000000 - 0xFFFFFFFF

  lis r5, 0xff00 ---------> lis r5, 0x5f00

  ori r5, r5, 0x000a

  mtspr 626, r5

  lis r5, 0xff00 ---------> lis r5, 0x5f00

  ori r5, r5, 0x003f

  mtspr 627, r5

Then I build the project.

In the target mask,I set the base address in 5f000000. And the u-boot is download to 5ff80000.

But I encountered the problem.

Where is the error?

Best regard,

Min Zhao

[lunminliang]

I think you also need to do the MMU initialization, see below in the orignal .tcl file:

# define 16MB   TLB1 entry 2: 0xFF000000 - 0xFFFFFFFF; for Local Bus, cache inhibited, guarded

    reg ${CAM_GROUP}L2MMU_CAM2 = 0x70000FCAFC080000FF000000FF000001

I am a little confused by your description, are you using the CodeWarrior flash programmer tool? then why do you change the file p2020rdb-pc_int.c?

As the CW flash programmer tool will take use of the built-in flash programming algorithm, those are .elf file.

[敏赵]

Before I building the project, I can't find the .elf file. The reason that I change the file p2020rdb-pc_int.c is I modify the NOR's base address. I have modifyed the relevant configuration in .tcl file.

Best regard,

Min Zhao

[huyang]

Hi,

I have the same problem as Min Zhao.

We changed the NOR Flash on P2020RDB-PC from 16MB(S29GL128P) to 64MB(S29GL512P).

Now we want to flash the uboot into it, what should we changed on Codewarrior to make this happen?

Best Regards,

Hu

[addiyi]

Please tale a look on Uboot flash problem on uncustom P2020RDB-PC | Freescale Community

Adrian