1*67d4254dSFrans Kaashoek // Memory layout 2*67d4254dSFrans Kaashoek 3*67d4254dSFrans Kaashoek #define PGSIZE 4096 // bytes mapped by a page 4*67d4254dSFrans Kaashoek #define PGSHIFT 12 // log2(PGSIZE) 5*67d4254dSFrans Kaashoek 6*67d4254dSFrans Kaashoek #define KSTKSIZE (8*PGSIZE) // size of a kernel stack 7*67d4254dSFrans Kaashoek 8*67d4254dSFrans Kaashoek #define IOSPACEB 0x0A0000 // begin IO space 9*67d4254dSFrans Kaashoek #define IOSPACEE 0x100000 // end IO space 10*67d4254dSFrans Kaashoek #define PHYSTOP 0xE000000 // use phys mem up to here as free pool 11*67d4254dSFrans Kaashoek 12*67d4254dSFrans Kaashoek // Key addresses for address space layout (see kmap in vm.c for the actual layout) 13*67d4254dSFrans Kaashoek #define KERNBASE 0xF0000000 // First kernel virtual address 14*67d4254dSFrans Kaashoek #define USERTOP (KERNBASE-PGSIZE) // Highest user virtual address 15*67d4254dSFrans Kaashoek #define KERNLINK 0xF0100000 // Address where kernel is linked 16*67d4254dSFrans Kaashoek 17*67d4254dSFrans Kaashoek #ifndef __ASSEMBLER__ 18*67d4254dSFrans Kaashoek 19*67d4254dSFrans Kaashoek static inline uint v2p(void *a) { return (uint) a - KERNBASE; } 20*67d4254dSFrans Kaashoek static inline void *p2v(uint a) { return (void *) a + KERNBASE; } 21*67d4254dSFrans Kaashoek 22*67d4254dSFrans Kaashoek #endif 23*67d4254dSFrans Kaashoek 24*67d4254dSFrans Kaashoek #define V2P(a) ((uint) a - KERNBASE) 25*67d4254dSFrans Kaashoek #define P2V(a) ((void *) a + KERNBASE) 26*67d4254dSFrans Kaashoek 27