ref: 21947578303cdb0fcb4b0cdfe80aa9dab5f6b447
dir: /os/ks32/mem.h/
/* * Memory and machine-specific definitions. Used in C and assembler. */ /* * Sizes */ #define _K_ 1024 /* 2^10 -> Kilo */ #define _M_ 1048576 /* 2^20 -> Mega */ #define _G_ 1073741824 /* 2^30 -> Giga */ #define _T_ 1099511627776UL /* 2^40 -> Tera */ #define BI2BY 8 /* bits per byte */ #define BI2WD 32 /* bits per word */ #define BY2WD 4 /* bytes per word */ #define BY2V 8 /* bytes per double word */ #define BY2PG 4096 /* bytes per page */ #define WD2PG (BY2PG/BY2WD) /* words per page */ #define PGSHIFT 12 /* log(BY2PG) */ #define ROUND(s, sz) (((s)+(sz-1))&~(sz-1)) #define PGROUND(s) ROUND(s, BY2PG) #define BIT(n) (1<<n) #define BITS(a,b) ((1<<(b+1))-(1<<a)) #define MAXMACH 1 /* max # cpus system can run */ /* * Time */ #define HZ (100) /* clock frequency */ #define MS2HZ (1000/HZ) /* millisec per clock tick */ #define TK2SEC(t) ((t)/HZ) /* ticks to seconds */ #define MS2TK(t) ((t)/MS2HZ) /* milliseconds to ticks */ /* * More accurate time */ #define TIMER_HZ 50000000 #define MS2TMR(t) ((ulong)(((uvlong)(t)*TIMER_HZ)/1000)) #define US2TMR(t) ((ulong)(((uvlong)(t)*TIMER_HZ)/1000000)) /* * Address spaces * */ #define KZERO 0x0 #define MACHADDR ((ulong)&Mach0) /* #define MACHADDR (KZERO+0x00002000) /* should come from BootParam, */ /* or be automatically allocated */ /* #define KTTB (KZERO+0x00004000) - comes from BootParam now */ #define KTZERO bootparam->entry #define KSTACK 8192 /* Size of kernel stack */ #include "armv7.h"