ref: 15b2a406cc0e11377cee12b5a112c003f7250a7f
dir: /os/ipengine/tlb.s/
#include "mem.h" #define MB (1024*1024) /* * TLB prototype entries, loaded once-for-all at startup, * remaining unchanged thereafter. * Limit the table to at most 8 entries to ensure * it works on the 823 (other 8xx processors allow up to 32 TLB entries). */ #define TLBE(epn,rpn,twc) WORD $(epn); WORD $(twc); WORD $(rpn) TEXT tlbtab(SB), $-4 /* epn, rpn, twc */ TLBE(KZERO|PHYSDRAM|TLBVALID, PHYSDRAM|PTEWRITE|PTELPS|PTESH|PTEVALID, PTE8MB|PTEVALID) /* DRAM, 8M */ TLBE(KZERO|(PHYSDRAM+8*MB)|TLBVALID, (PHYSDRAM+8*MB)|PTEWRITE|PTELPS|PTESH|PTEVALID, PTE8MB|PTEVALID) /* DRAM, 8M */ TLBE(KZERO|PHYSIMM|TLBVALID, PHYSIMM|PTEWRITE|PTELPS|PTESH|PTECI|PTEVALID, PTE512K|PTEVALID) /* IMMR, 512K (includes FPGA control and clock synth) */ TLBE(KZERO|PHYSFLASH|TLBVALID, PHYSFLASH|PTEWRITE|PTELPS|PTESH|PTECI|PTEVALID, PTE8MB|PTEWT|PTEVALID) /* Flash, 8M */ TLBE(KZERO|FPGAMEM|TLBVALID, FPGAMEM|PTEWRITE|PTELPS|PTESH|PTECI|PTEVALID, PTE8MB|PTEG|PTEVALID) /* FPGA mem, 8M */ TEXT tlbtabe(SB), $-4 RETURN