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/*
* 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