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1 // Memory layout
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2
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3 // Key addresses for address space layout (see kmap in vm.c for layout)
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4 #define EXTMEM 0x20000
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5 #define KERNBASE 0x80000000 // First kernel virtual address
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6 #define KERNLINK (KERNBASE+EXTMEM) // Address where kernel is linked
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7
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8 // we first map 1MB low memory containing kernel code.
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9 #define INIT_KERNMAP 0x100000
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10
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11 #ifndef __ASSEMBLER__
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12
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13 static inline uint v2p(void *a) { return ((uint) (a)) - KERNBASE; }
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14 static inline void *p2v(uint a) { return (void *) ((a) + KERNBASE); }
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15
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16 #endif
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17
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18 #define V2P(a) (((uint) (a)) - KERNBASE)
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19 #define P2V(a) (((void *) (a)) + KERNBASE)
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20
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21 #define V2P_WO(x) ((x) - KERNBASE) // same as V2P, but without casts
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22 #define P2V_WO(x) ((x) + KERNBASE) // same as V2P, but without casts
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