[ECOS] Hosed ipaq

[Nick Clarey <nclarey at 3glab dot com>]

Howdy all,

This is a bit complicated, but I'll try to make the situation reasonably 
clear :->

1) Compaq Ipaq, old compaq bootloader at 0x0, works fine

2) Flashed an old RedBoot image into 0x00100000, jumped to it, worked 
fine.

3) Loaded a current RedBoot RAM image into RAM at 0x00100000 (virtual), 
jumped to it, worked fine.

4) Created a current RedBoot ROM image, flashed it into ROM at 0x50200000 
(virtual) as a test, checked the first couple of bytes, looked like it had 
worked ok.

5) Flashed image from (4) into ROM at 0x50100000 (virtual), because the 
old RedBoot image had swapped 0x50000000 and 0x50100000 (virtual) around 
(so said physaddr). Physaddr reports that 0x50100000 virtual == 0x00000000 
physical, so that ought to mean that I now have the RedBoot ROM image 
living at 0x0 physical.

6) Hit the reset button. <cricket> <cricket>

7) Opened up minicom. Junk on screen. Figure that these are <phew> GDB 
stubs, point GDB at them, connect okay.

8) Take the RAM image and try to load it and cont it, see if it'll give me 
RedBoot back. No dice; I get some "program no longer exists" message and a 
SIGKILL. Figure that the MMU hasn't been set up and that GDB is trying to 
load the image into flash, which isn't working.

9) Roll a RAM image with base address 0xc0100000 in the hopes that it will 
like it better there. Load it up, correct base address, try to cont it, 
and no dice, same message about program no longer existing, SIGKILL.

10) Figure I'll try a RAM image with base address 0xc0000000, in the hopes 
that it will work better. No dice. In fact, this time I get some bad 
packets in gdb while trying to load. Hairs on the back of my neck stand 
up. GDB stops communicating.

11) Hit the reset button, figuring that flash will still be okay. Nothing. 
Not even GDB stubs. <sob>

Is my iPAQ toast? Or is there some hope of redemption?

Help.

See ya,

Nick

-- 
Nick Clarey, System Architect        | "Sometimes when you fill a vacuum,
3G LAB                               |  it still sucks."  - Rob Pike
ph 44-1223-478900 fax 44-1223-478901 |