Le 09/07/12 18:28, Michael Walle a écrit : > > Yann Sionneau <y...@minet.net> schrieb: > >> Hey, >> >> Michael Walle asked me to publish a documentation of Milkymist MMU in >> order for him to study the feasibility of implementing a model for this >> MMU in QEmu. >> Documenting is always something one needs to do at some point, so here >> it is, written very quickly in a small text file. >> >> I hope it is clear enough, if you have any question: do not hesitate to >> ask me :) >> This is not a complete documentation, it does not say anything yet >> about >> generated exceptions/TLB miss/page fault etc. > thanks. still missing: > - csr numbers > - how to enable and disable the mmu I updated the wiki documentation with the following information:
CSR ids (used in LM32 opcodes): * TLBCTRL: 0x1C * TLBVADDR (and DTLBMA): 0x1D * TLBPADDR (and ITLBMA): 0x1E Enabling the ITLB: mvi r1, 0x8 wcsr TLBCTRL, r1 Enabling the DTLB: mvi r1, 0x9 wcsr TLBCTRL, r1 Cheers, -- Yann Sionneau _______________________________________________ http://lists.milkymist.org/listinfo.cgi/devel-milkymist.org IRC: #milkymist@Freenode
