167d4254dSFrans Kaashoek // Memory layout 267d4254dSFrans Kaashoek 3c3dcf479SFrans Kaashoek #define EXTMEM 0x100000 // Start of extended memory 4e25b74caSFrans Kaashoek #define PHYSTOP 0xE000000 // Top physical memory 5c3dcf479SFrans Kaashoek #define DEVSPACE 0xFE000000 // Other devices are at high addresses 667d4254dSFrans Kaashoek 7e25b74caSFrans Kaashoek // Key addresses for address space layout (see kmap in vm.c for layout) 815997d58SRobert Morris #define KERNBASE 0x80000000 // First kernel virtual address 9c3dcf479SFrans Kaashoek #define KERNLINK (KERNBASE+EXTMEM) // Address where kernel is linked 1067d4254dSFrans Kaashoek 117e7cb106SRobert Morris #define V2P(a) (((uint) (a)) - KERNBASE) 12*96e4e2f4SFrans Kaashoek #define P2V(a) ((void *)(((char *) (a)) + KERNBASE)) 1367d4254dSFrans Kaashoek 14a56c8d60SFrans Kaashoek #define V2P_WO(x) ((x) - KERNBASE) // same as V2P, but without casts 15abce9b81SJindong Zhang #define P2V_WO(x) ((x) + KERNBASE) // same as P2V, but without casts 16