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Unable to boot OR1200
by tatonko on Apr 5, 2012 |
tatonko
Posts: 1 Joined: Oct 10, 2011 Last seen: Oct 31, 2014 |
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Hi,
I'm using OR1200 CPU in a simple system I'm trying to built (CPU, SRAM, SDRAM, FLASH and UART). I've modified the defines file in order to have IMMU, DMMU, DC and IC (in the future I'd like to run linux over the whole system). I'm using modelsim to simulate the design. When trying too boot I've tried both resets (for gated and non gated clock) and the result have been always the same. When the reset is asserted, the boot address seems to be well charged in the IMMU, but as soon as the reset goes inactive the whole thing goes wrong getting 0xXXXXXXXX as iwb_adr_o instead of the boot address specified in the defines file. I've been almost the whole week trying to figure out where this wrong behavior comes from, but I'm completely lost. I've only modified the defines file, the rest are as in the trunk, shall I have modified another files? Hope someone can help!! Thanks PD: attached, there is my or1200_defines.v
or1200_defines.v (52 kb)
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