ref: dfb4b522830edab8f3856289d326d6cf5e930644
dir: /sys/src/9/teg2/arm.h/
/* * arm-specific definitions for cortex-a8 and -a9 * these are used in C and assembler * * `cortex' refers to the cortex-a8 or -a9. */ #define NREGS 15 /* general-purpose regs, R0 through R14 */ /* * Program Status Registers */ #define PsrMusr 0x00000010 /* mode */ #define PsrMfiq 0x00000011 #define PsrMirq 0x00000012 #define PsrMsvc 0x00000013 /* `protected mode for OS' */ #define PsrMmon 0x00000016 /* `secure monitor' (trustzone hyper) */ #define PsrMabt 0x00000017 #define PsrMund 0x0000001B #define PsrMsys 0x0000001F /* `privileged user mode for OS' (trustzone) */ #define PsrMask 0x0000001F #define PsrThumb 0x00000020 /* beware hammers */ #define PsrDfiq 0x00000040 /* disable FIQ interrupts */ #define PsrDirq 0x00000080 /* disable IRQ interrupts */ #define PsrDasabt 0x00000100 /* disable asynch aborts */ #define PsrBigend 0x00000200 #define PsrJaz 0x01000000 /* java mode */ #define PsrV 0x10000000 /* overflow */ #define PsrC 0x20000000 /* carry/borrow/extend */ #define PsrZ 0x40000000 /* zero */ #define PsrN 0x80000000 /* negative/less than */ #define PsrMbz (PsrJaz|PsrThumb|PsrBigend) /* these bits must be 0 */ /* * MCR and MRC are anti-mnemonic. * MTCP coproc, opcode1, Rd, CRn, CRm[, opcode2] # arm -> coproc * MFCP coproc, opcode1, Rd, CRn, CRm[, opcode2] # coproc -> arm */ #define MTCP MCR #define MFCP MRC /* instruction decoding */ #define ISCPOP(op) ((op) == 0xE || ((op) & ~1) == 0xC) #define ISFPAOP(cp, op) ((cp) == CpOFPA && ISCPOP(op)) #define ISVFPOP(cp, op) (((cp) == CpDFP || (cp) == CpFP) && ISCPOP(op)) /* * Coprocessors */ #define CpOFPA 1 /* ancient 7500 FPA */ #define CpFP 10 /* float FP, VFP cfg. */ #define CpDFP 11 /* double FP */ #define CpSC 15 /* System Control */ /* * Primary (CRn) CpSC registers. */ #define CpID 0 /* ID and cache type */ #define CpCONTROL 1 /* miscellaneous control */ #define CpTTB 2 /* Translation Table Base(s) */ #define CpDAC 3 /* Domain Access Control */ #define CpFSR 5 /* Fault Status */ #define CpFAR 6 /* Fault Address */ #define CpCACHE 7 /* cache/write buffer control */ #define CpTLB 8 /* TLB control */ #define CpCLD 9 /* L2 Cache Lockdown, op1==1 */ #define CpTLD 10 /* TLB Lockdown, with op2 */ #define CpVECS 12 /* vector bases, op1==0, Crm==0, op2s (cortex) */ #define CpPID 13 /* Process ID */ #define CpDTLB 15 /* TLB, L1 cache stuff (cortex) */ /* * CpTTB op1==0, Crm==0 opcode2 values. */ #define CpTTB0 0 /* secure ttb */ #define CpTTB1 1 /* non-secure ttb (v7) */ #define CpTTBctl 2 /* v7 */ /* * CpFSR op1==0, Crm==0 opcode 2 values. */ #define CpDFSR 0 /* data fault status */ #define CpIFSR 1 /* instruction fault status */ /* * CpFAR op1==0, Crm==0 opcode 2 values. */ #define CpDFAR 0 /* data fault address */ #define CpIFAR 2 /* instruction fault address */ /* * CpID Secondary (CRm) registers. */ #define CpIDidct 0 /* * CpID CpIDidct op1==0 opcode2 fields. */ #define CpIDid 0 /* main ID */ #define CpIDct 1 /* cache type */ #define CpIDtlb 3 /* tlb type (cortex) */ #define CpIDmpid 5 /* multiprocessor id (cortex) */ /* CpIDid op1 values */ #define CpIDcsize 1 /* cache size (cortex) */ #define CpIDcssel 2 /* cache size select (cortex) */ /* * CpID CpIDidct op1==CpIDcsize opcode2 fields. */ #define CpIDcasize 0 /* cache size */ #define CpIDclvlid 1 /* cache-level id */ /* * CpCONTROL op2 codes, op1==0, Crm==0. */ #define CpMainctl 0 /* sctlr */ #define CpAuxctl 1 #define CpCPaccess 2 /* * CpCONTROL: op1==0, CRm==0, op2==CpMainctl. * main control register. * cortex/armv7 has more ops and CRm values. */ #define CpCmmu 0x00000001 /* M: MMU enable */ #define CpCalign 0x00000002 /* A: alignment fault enable */ #define CpCdcache 0x00000004 /* C: data cache on */ #define CpBigend (1<<7) #define CpCsw (1<<10) /* SW: SWP(B) enable (deprecated in v7) */ #define CpCpredict 0x00000800 /* Z: branch prediction (armv7) */ #define CpCicache 0x00001000 /* I: instruction cache on */ #define CpChv 0x00002000 /* V: high vectors */ #define CpCrr (1<<14) /* RR: round robin vs random cache replacement */ #define CpCha (1<<17) /* HA: hw access flag enable */ #define CpCdz (1<<19) /* DZ: divide by zero fault enable (not cortex-a9) */ #define CpCfi (1<<21) /* FI: fast intrs */ #define CpCve (1<<24) /* VE: intr vectors enable */ #define CpCee (1<<25) /* EE: exception endianness: big */ #define CpCnmfi (1<<27) /* NMFI: non-maskable fast intrs. (RO) */ #define CpCtre (1<<28) /* TRE: TEX remap enable */ #define CpCafe (1<<29) /* AFE: access flag (ttb) enable */ #define CpCte (1<<30) /* TE: thumb exceptions */ #define CpCsbz (1<<31 | CpCte | CpCafe | CpCtre | 1<<26 | CpCee | CpCve | \ CpCfi | 3<<19 | CpCha | 1<<15 | 3<<8 | CpBigend) /* must be 0 (armv7) */ #define CpCsbo (3<<22 | 1<<18 | 1<<16 | CpChv | CpCsw | 017<<3) /* must be 1 (armv7) */ /* * CpCONTROL: op1==0, CRm==0, op2==CpAuxctl. * Auxiliary control register on cortex-a9. * these differ from even the cortex-a8 bits. */ #define CpACparity (1<<9) #define CpACca1way (1<<8) /* cache in a single way */ #define CpACcaexcl (1<<7) /* exclusive cache */ #define CpACsmp (1<<6) /* SMP l1 caches coherence; needed for ldrex/strex */ #define CpAClwr0line (1<<3) /* write full cache line of 0s; see Fullline0 */ #define CpACl1pref (1<<2) /* l1 prefetch enable */ #define CpACl2pref (1<<1) /* l2 prefetch enable */ #define CpACmaintbcast (1<<0) /* broadcast cache & tlb maint. ops */ /* * CpCONTROL Secondary (CRm) registers and opcode2 fields. */ #define CpCONTROLscr 1 #define CpSCRscr 0 /* secure configuration */ /* * CpCACHE Secondary (CRm) registers and opcode2 fields. op1==0. * In ARM-speak, 'flush' means invalidate and 'clean' means writeback. */ #define CpCACHEintr 0 /* interrupt (op2==4) */ #define CpCACHEisi 1 /* inner-sharable I cache (v7) */ #define CpCACHEpaddr 4 /* 0: phys. addr (cortex) */ #define CpCACHEinvi 5 /* instruction, branch table */ #define CpCACHEinvd 6 /* data or unified */ // #define CpCACHEinvu 7 /* unified (not on cortex) */ #define CpCACHEva2pa 8 /* va -> pa translation (cortex) */ #define CpCACHEwb 10 /* writeback */ #define CpCACHEinvdse 11 /* data or unified by mva */ #define CpCACHEwbi 14 /* writeback+invalidate */ #define CpCACHEall 0 /* entire (not for invd nor wb(i) on cortex) */ #define CpCACHEse 1 /* single entry */ #define CpCACHEsi 2 /* set/index (set/way) */ #define CpCACHEtest 3 /* test loop */ #define CpCACHEwait 4 /* wait (prefetch flush on cortex) */ #define CpCACHEdmbarr 5 /* wb only (cortex) */ #define CpCACHEflushbtc 6 /* flush branch-target cache (cortex) */ #define CpCACHEflushbtse 7 /* ⋯ or just one entry in it (cortex) */ /* * CpTLB Secondary (CRm) registers and opcode2 fields. */ #define CpTLBinvi 5 /* instruction */ #define CpTLBinvd 6 /* data */ #define CpTLBinvu 7 /* unified */ #define CpTLBinv 0 /* invalidate all */ #define CpTLBinvse 1 /* invalidate single entry */ #define CpTBLasid 2 /* by ASID (cortex) */ /* * CpCLD Secondary (CRm) registers and opcode2 fields for op1==0. (cortex) */ #define CpCLDena 12 /* enables */ #define CpCLDcyc 13 /* cycle counter */ #define CpCLDuser 14 /* user enable */ #define CpCLDenapmnc 0 #define CpCLDenacyc 1 /* * CpCLD Secondary (CRm) registers and opcode2 fields for op1==1. */ #define CpCLDl2 0 /* l2 cache */ #define CpCLDl2aux 2 /* auxiliary control */ /* * l2 cache aux. control */ #define CpCl2ecc (1<<28) /* use ecc, not parity */ #define CpCl2noldforw (1<<27) /* no ld forwarding */ #define CpCl2nowrcomb (1<<25) /* no write combining */ #define CpCl2nowralldel (1<<24) /* no write allocate delay */ #define CpCl2nowrallcomb (1<<23) /* no write allocate combine */ #define CpCl2nowralloc (1<<22) /* no write allocate */ #define CpCl2eccparity (1<<21) /* enable ecc or parity */ #define CpCl2inner (1<<16) /* inner cacheability */ /* other bits are tag ram & data ram latencies */ /* * CpTLD Secondary (CRm) registers and opcode2 fields. */ #define CpTLDlock 0 /* TLB lockdown registers */ #define CpTLDpreload 1 /* TLB preload */ #define CpTLDi 0 /* TLB instr. lockdown reg. */ #define CpTLDd 1 /* " data " " */ /* * CpVECS Secondary (CRm) registers and opcode2 fields. */ #define CpVECSbase 0 #define CpVECSnorm 0 /* (non-)secure base addr */ #define CpVECSmon 1 /* secure monitor base addr */ /* * MMU page table entries. * memory must be cached, buffered, sharable and wralloc to participate in * automatic L1 cache coherency. */ #define Mbz (0<<4) /* L1 page tables: must be 0 */ #define Noexecsect (1<<4) /* L1 sections: no execute */ #define Fault 0x00000000 /* L[12] pte: unmapped */ #define Coarse (Mbz|1) /* L1: page table */ #define Section (Mbz|2) /* L1 1MB */ /* * next 2 bits (L1wralloc & L1sharable) and Buffered and Cached must be * set in l1 ptes for LDREX/STREX to work. */ #define L1wralloc (1<<12) /* L1 TEX */ #define L1sharable (1<<16) #define L1nonglobal (1<<17) /* tied to asid */ #define Nonsecuresect (1<<19) /* L1 sections */ #define Large 0x00000001 /* L2 64KB */ #define Noexecsmall 1 /* L2: no execute */ #define Small 0x00000002 /* L2 4KB */ /* * next 3 bits (Buffered, Cached, L2wralloc) & L2sharable must be set in * l2 ptes for memory containing locks because LDREX/STREX require them. */ #define Buffered 0x00000004 /* L[12]: 0 write-thru, 1 -back */ #define Cached 0x00000008 /* L[12] */ #define L2wralloc (1<<6) /* L2 TEX (small pages) */ #define L2apro (1<<9) /* L2 AP: read only */ #define L2sharable (1<<10) #define L2nonglobal (1<<11) /* tied to asid */ #define Dom0 0 /* attributes for memory containing locks */ #define L1ptedramattrs (Cached | Buffered | L1wralloc | L1sharable) #define L2ptedramattrs (Cached | Buffered | L2wralloc | L2sharable) #define Noaccess 0 /* AP, DAC */ #define Krw 1 /* AP */ /* armv7 deprecates AP[2] == 1 & AP[1:0] == 2 (Uro), prefers 3 (new in v7) */ #define Uro 2 /* AP */ #define Urw 3 /* AP */ #define Client 1 /* DAC */ #define Manager 3 /* DAC */ #define AP(n, v) F((v), ((n)*2)+4, 2) #define L1AP(ap) (AP(3, (ap))) #define L2AP(ap) (AP(0, (ap))) /* armv7 */ #define DAC(n, v) F((v), (n)*2, 2) #define HVECTORS 0xffff0000