ref: a5cb451b299b03f44154fac5780b6a57ca130ce0
dir: /os/manga/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 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 CLOCKFREQ 25000000 #define MS2TMR(t) ((ulong)(((uvlong)(t)*CLOCKFREQ)/1000)) #define US2TMR(t) ((ulong)(((uvlong)(t)*CLOCKFREQ)/1000000)) /* * Address spaces * nearly everything maps 1-1 with physical addresses * 0 to 1Mb is not mapped * cache strategy varies as needed (see mmu.c) */ #define KZERO 0xC0000000 #define MACHADDR (KZERO+0x00001000) #define KTTB (KZERO+0x00004000) #define KTZERO (KZERO+0x00008010) #define KSTACK 8192 /* Size of kernel stack */ #define FLASHMEM 0x50000000 /* map flash to otherwise unused virtual space */ #define UCDRAMZERO (KZERO+0x08000000) /* base of memory doubly-mapped as uncached */ #define AIVECADDR 0xFFFF0000 /* alternative interrupt vector address (other is 0) */ /* * Physical addresses */ #define PHYSDRAM0 0x00000000 /* where firmware puts it */ #define PHYSFLASH0 0x02800000 /* where firmware puts it */ #define PHYSSCRINIT 0x03FF0000 /* address at reset */ #define PHYSSCR PHYSSCRINIT /* where it ends up after manga firmware */ #define PHYSBRIDGE (PHYSSCR+0x2000) /* PCI-AHB bridge configuration */ #define PHYSMEMCR (PHYSSCR+0x4000) /* memory controller interface */ #define PHYSWANDMA (PHYSSCR+0x6000) /* WAN DMA registers */ #define PHYSLANDMA (PHYSSCR+0x8000) /* LAN DMA registers */ #define PHYSUART (PHYSSCR+0xE000) #define PHYSINTR (PHYSSCR+0xE200) /* interrupt controller */ #define PHYSTIMER (PHYSSCR+0xE400) /* timer registers */ #define PHYSGPIO (PHYSSCR+0xE600) #define PHYSSWITCH (PHYSSCR+0xE800) /* switch engine configuration */ #define PHYSMISC (PHYSSCR+0xEA00) /* ``miscellaneous'' registers */ #define PHYSPCIBRIDGE 0x80000000 /* physical address that maps to PCI 0 */ #define PHYSPCIIO 0x10000000 /* physical address that maps to PCI I/O space */ #define CACHELINELOG 5 #define CACHELINESZ (1<<CACHELINELOG) #define CACHESIZE (8*1024) /* I & D caches are the same size, 4 segment, 64-way associative */ /* * PSR */ #define PsrMusr 0x10 /* mode */ #define PsrMfiq 0x11 #define PsrMirq 0x12 #define PsrMsvc 0x13 #define PsrMabt 0x17 #define PsrMund 0x1B #define PsrMsys 0x1F #define PsrMask 0x1F #define PsrDfiq 0x00000040 /* disable FIQ interrupts */ #define PsrDirq 0x00000080 /* disable IRQ interrupts */ #define PsrV 0x10000000 /* overflow */ #define PsrC 0x20000000 /* carry/borrow/extend */ #define PsrZ 0x40000000 /* zero */ #define PsrN 0x80000000 /* negative/less than */ /* * Internal MMU coprocessor registers (ARM 922) */ #define CpCPUID 0 /* R: opcode_2 is 0*/ #define CpCacheID 0 /* R: opcode_2 is 1 */ #define CpControl 1 /* R/W: control (opcode_2 is 0) */ #define CpTTB 2 /* R/W: translation table base */ #define CpDAC 3 /* R/W: domain access control */ #define CpFSR 5 /* R/W: fault status */ #define CpFAR 6 /* R/W: fault address */ #define CpCacheCtl 7 /* W: */ #define CpTLBops 8 /* W: TLB operations */ #define CpCacheLk 9 /* W: cache lock down */ #define CpPID 13 /* R/W: Process ID Virtual Mapping */ #define CpTest 15 /* R/W: test configuration */ /* * Coprocessors */ #define CpMMU 15 /* * CpControl bits */ #define CpCmmu (1<<0) /* M: MMU enable */ #define CpCalign (1<<1) /* A: alignment fault enable */ #define CpCDcache (1<<2) /* C: data cache on */ #define CpCwpd (15<<3) /* W, P, D, must be one */ #define CpCbe (1<<7) /* B: big-endian operation */ #define CpCsystem (1<<8) /* S: system permission */ #define CpCrom (1<<9) /* R: ROM permission */ #define CpCIcache (1<<12) /* I: Instruction Cache on */ #define CpCaltivec (1<<13) /* X: exception vector relocation */ #define CpCrrobin (1<<14) /* RR: round robin replacement */ #define CpCnotFast (1<<30) /* nF: notFastBus select */ #define CpCasync (1<<31) /* iA: asynchronous clock select */