ref: e81c54ba2ecc673a4d5f8aed0e9b52841fe07b0d
dir: /os/boot.original/mpc/mem.h/
/* * Memory and machine-specific definitions. Used in C and assembler. */ /* * Sizes */ #define BI2BY 8 /* bits per byte */ #define BI2WD 32 /* bits per word */ #define BY2WD 4 /* bytes per word */ #define BY2PG 4096 /* bytes per page */ #define WD2PG (BY2PG/BY2WD) /* words per page */ #define PGSHIFT 12 /* log(BY2PG) */ #define PGROUND(s) (((s)+(BY2PG-1))&~(BY2PG-1)) #define MAXMACH 1 /* max # cpus system can run */ #define CACHELINELOG 4 #define CACHELINESZ (1<<CACHELINELOG) /* * Time */ #define HZ (50) /* clock frequency */ #define MS2HZ (1000/HZ) /* millisec per clock tick */ #define TK2SEC(t) ((t)/HZ) /* ticks to seconds */ #define TK2MS(t) ((((ulong)(t))*1000)/HZ) /* ticks to milliseconds */ #define MS2TK(t) ((((ulong)(t))*HZ)/1000) /* milliseconds to ticks */ #define MHz 1000000 /* * Fundamental values */ #define KZERO 0 /* bootstrap runs in real mode */ #define MACHSIZE 4096 /* * physical MMU */ #define KSEG0 0x20000000 #define KSEGM 0xE0000000 /* mask to check which seg */ /* * MSR bits */ #define POW 0x40000 /* enable power mgmt */ #define TGPR 0x20000 /* GPR0-3 remapped; 603/603e specific */ #define ILE 0x10000 /* interrupts little endian */ #define EE 0x08000 /* enable external/decrementer interrupts */ #define PR 0x04000 /* =1, user mode */ #define FPE 0x02000 /* enable floating point */ #define ME 0x01000 /* enable machine check exceptions */ #define FE0 0x00800 #define SE 0x00400 /* single-step trace */ #define BE 0x00200 /* branch trace */ #define FE1 0x00100 #define IP 0x00040 /* =0, vector to nnnnn; =1, vector to FFFnnnnn */ #define IR 0x00020 /* enable instruction address translation */ #define DR 0x00010 /* enable data address translation */ #define RI 0x00002 /* exception is recoverable */ #define LE 0x00001 /* little endian mode */ #define KMSR (ME|FE0|FE1|FPE) #define UMSR (KMSR|PR|EE|IR|DR) /* * MPC82x addresses; mpc8bug is happy with these */ #define BCSRMEM 0x02100000 #define INTMEM 0x02200000 #define FLASHMEM 0x02800000 #define SDRAMMEM 0x03000000 #define DPRAM (INTMEM+0x2000) #define DPLEN1 0x400 #define DPLEN2 0x200 #define DPLEN3 0x100 #define DPBASE (DPRAM+DPLEN1) #define SCC1P (INTMEM+0x3C00) #define I2CP (INTMEM+0x3C80) #define MISCP (INTMEM+0x3CB0) #define IDMA1P (INTMEM+0x3CC0) #define SCC2P (INTMEM+0x3D00) #define SCC3P (INTMEM+0x3E00) #define SCC4P (INTMEM+0x3F00) #define SPIP (INTMEM+0x3D80) #define TIMERP (INTMEM+0x3DB0) #define SMC1P (INTMEM+0x3E80) #define DSP1P (INTMEM+0x3EC0) #define SMC2P (INTMEM+0x3F80) #define DSP2P (INTMEM+0x3FC0) #define KEEP_ALIVE_KEY 0x55ccaa33 /* clock and rtc register key */