gautam@koperasw.com wrote:
Hi,
I am trying to write the kernel image to flash / IDE using yamon's disk write,
load,cp commands . I have a recurring error message that says "Mapped entry not
found in TLB" (something to that effect,just in case these are not the exact
words).
For e.g. I get the error evenn when I do a memory erase at the flash address
sucessfully and later use the same starting address for cp .
Does the TLB need to be edited in any specific way or can I direct these
commands to execute without them needing to refer to the TLB?
I know the answer must be pretty apparent, but have already scoured through
google in vain searching for exact/relevant documentation.(and am pretty
desperate now!)
Are you trying to use the physical addresses when accessing the
FLASH/memory? You need to use KSEG0/KSEG1 addresses:
YAMON> erase be100000 2e0000 # Erase the FLASH "user" area
The following area will be erased:
Start address = 0x1e100000
Size = 0x002e0000
Confirm ? (y/n) y
Erasing...Done
YAMON>
YAMON> dump be100000 20 # Check that it's erased
BE100000: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ................
BE100010: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ................
YAMON> fill 80100000 20 55 # Set up some data in RAM
Filling from 0x80100000 to 0x8010001f with byte data 0x55.
YAMON> copy 80100000 be100000 20 # copy data to FLASH
Copying...Done
YAMON> dump be100000 20 # Check that FLASH contains data
BE100000: 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 UUUUUUUUUUUUUUUU
BE100010: 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 UUUUUUUUUUUUUUUU
Chris
--
Chris Dearman The Fruit Farm, Ely Road voice +44 1223 706206
MIPS Technologies (UK) Chittering, Cambs, CB5 9PH fax +44 1223 706250
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