This is the mail archive of the ecos-discuss@sources.redhat.com mailing list for the eCos project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

RE: Redboot EB40a problems with flash programming


>hello,
>
>just some guesses ...
>
>what about boot sectors in ATMEL's flash (AFAIK, from 0x0 to 0x20000) ?

>Is the flash driver able to handle them ?

I don't know enough to comment, but it seems like you are onto
something.

---------------
RedBoot> fis erase -f 0x1020000 -l 0x10000
... Erase from 0x01020000-0x01030000: .
RedBoot> fis erase -f 0x1010000 -l 0x10000
... Erase from 0x01010000-0x01020000: +
RedBoot(tm) bootstrap and debug environment [ROM]
Non-certified release, version UNKNOWN - built 12:51:51, May 22 2003

Platform: Atmel AT91/EB40A (ARM7TDMI)
Copyright (C) 2000, 2001, 2002, Red Hat, Inc.

RAM: 0x00000000-0x00040000, 0x0000a748-0x0003f000 available
FLASH: 0x01010000 - 0x01200000, 31 blocks of 0x00010000 bytes each.
RedBoot>
-----------------


But when I try to program, things still don't work:
------------------
RedBoot> fis write -f 0x1020000 -b 0x10000 -l 0x10000
* CAUTION * about to program FLASH
            at 0x01020000..0x0102ffff from 0x00010000 - continue (y/n)?
y
... Erase from 0x01020000-0x01030000: .
... Program from 0x00010000-0x00020000 at 0x01020000:
-------------------

or:

-------------------
RedBoot> fis write -f 0x1020000 -b 0x10000 -l 0x10000
* CAUTION * about to program FLASH
            at 0x01020000..0x0102ffff from 0x00010000 - continue (y/n)?
y
... Erase from 0x01020000-0x01030000: .
... Program from 0x00010000-0x00020000 at 0x01020000:
-------------------

>What about the size of redboot ? If it is bigger than 64K it may 
>refuse whatever you want to do at 0x1010000, otherwise it will 
>disappear. (some kind of internal protection)

I believe the output below shows that redboot only uses 
0x1000000-0x100ffff.

I checked with arm-elf-size and it is <64k:

   text    data     bss     dec     hex filename
  58539       0   24988   83527   14647 install/bin/redboot.elf




RedBoot> version

RedBoot(tm) bootstrap and debug environment [ROM]
Non-certified release, version UNKNOWN - built 12:51:51, May 22 2003

Platform: Atmel AT91/EB40A (ARM7TDMI)
Copyright (C) 2000, 2001, 2002, Red Hat, Inc.

RAM: 0x00000000-0x00040000, 0x0000a748-0x0003f000 available
FLASH: 0x01010000 - 0x01200000, 31 blocks of 0x00010000 bytes each.
RedBoot>



Øyvind


--
Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
and search the list archive: http://sources.redhat.com/ml/ecos-discuss


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]