[U-Boot-Users] relocating u-boot slightly in boot rom

[Charles Krinke]

I have an embedded planet EP8555 board where in board/ep85xxm there is a
config.mk and a u-boot.lds. I have made the following changes to move
the u-boot image from its default to slightly lower in flash to have a
second copy to work with. For some reason, the first malloc call panics,
says "bad trap" and the original image then boots, not my test image.
Here are the changes I made:

Config.mk  TEXT_BASE   was 0xFFF80000, change to 0xFFE00500 
u-boot.lds  .resetvec  was 0xFFFFFFFC, change to 0xFFE00000
            .bootpg    was 0xFFFFF000, change to 0xFFE00100

Using a BDI-2000, I can flash this new image and run it by going "go
0xffe00000". It runs for a while, but has trouble with malloc as I said.


It appears that the malloc area was originally set to 0x03F9E000, but
the first bin_at shows the av_ array at 0x03FEEC8C.

So, I think there is another constant I need to change related to
CFG_MONITOR_BASE, TEXT_BASE or something similar.

Here is an edited serial print of the current state.

U-Boot 1.1.4 (Oct 25 2006 - 08:33:28)
CPU:   8555, Version: 1.1, (0x80790011)
Core:  E500, Version: 2.0, (0x80200020)
Clock Configuration:
       CPU: 833 MHz, CCB: 333 MHz,
       DDR: 166 MHz, LBC:  83 MHz
L1:    D-cache 32 kB enabled
       I-cache 32 kB enabled
Board: EP8555M
    PCI: 64 bit, 66 MHz, monarch, local arbiter enabled
I2C:   ready
DRAM:  Initializing
    DDR: 64 MB
Top of RAM usable for U-Boot at: 04000000
Reserving 215k for U-Boot at: 03fc0000
Reserving 136k for malloc() at: 03f9e000
Reserving 84 Bytes for Board Info at: 03f9dfac
Reserving 72 Bytes for Global Data at: 03f9df64
Stack Pointer at: 03f9df48
New Stack Pointer is: 03f9df48
Now running in RAM - U-Boot at: 03fc0000
FLASH: flash detect cfi
CFK about to calloc in NewHandle
CFK mALLOc;is_small_request bytes:28 nb=32 idx=4
CFK bin_at(0):03FEEC8C bin_at(1):03FEEC94 bin_at(125):03FEF074
bin_at(126):03FEF07C
CFK q=03FEECAC victim=081AE7AC victim_size=819C000C
Bad trap at PC: 3fc4a64, SR: 21200, vector=d00

Charles