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
