ref: 1dbb193077af7ba6ff7fb70a4dd465480764382e
dir: /os/cerf405/tlb.s/
#include "mem.h" #define MB (1024*1024) /* * TLB prototype entries, loaded once-for-all at startup, * remaining unchanged thereafter. * Limit the table size to ensure it fits in small TLBs. */ #define TLBE(hi, lo) WORD $(hi); WORD $(lo) TEXT tlbtab(SB), $-4 /* tlbhi tlblo */ /* DRAM, 32MB */ TLBE(KZERO|PHYSDRAM|TLB16MB|TLBVALID, PHYSDRAM|TLBZONE(0)|TLBWR|TLBEX) TLBE(KZERO|(PHYSDRAM+16*MB)|TLB16MB|TLBVALID, (PHYSDRAM+16*MB)|TLBZONE(0)|TLBWR|TLBEX) /* memory-mapped IO, 4K */ TLBE(PHYSMMIO|TLB4K|TLBVALID, PHYSMMIO|TLBZONE(0)|TLBWR|TLBI|TLBG) /* NAND flash access (4K?) */ TLBE(PHYSNAND|TLB4K|TLBVALID, PHYSNAND|TLBZONE(0)|TLBWR|TLBI|TLBG) /* NOR flash, 2MB */ TLBE(PHYSFLASH|TLB1MB|TLBVALID, PHYSFLASH|TLBZONE(0)|TLBWR|TLBEX) TLBE((PHYSFLASH+MB)|TLB1MB|TLBVALID, (PHYSFLASH+MB)|TLBZONE(0)|TLBWR|TLBEX) TEXT tlbtabe(SB), $-4 RETURN