/* $OpenBSD: armreg.h,v 1.3 2006/05/29 17:01:42 drahn Exp $ */
/* $NetBSD: armreg.h,v 1.27 2003/09/06 08:43:02 rearnsha Exp $ */
/*
* Copyright (c) 1998, 2001 Ben Harris
* Copyright (c) 1994-1996 Mark Brinicombe.
* Copyright (c) 1994 Brini.
* All rights reserved.
*
* This code is derived from software written for Brini by Mark Brinicombe
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Brini.
* 4. The name of the company nor the name of the author may be used to
* endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _ARM_ARMREG_H
#define _ARM_ARMREG_H
/*
* ARM Process Status Register
*
* The picture in the ARM manuals looks like this:
* 3 3 2 2 2 2
* 1 0 9 8 7 6 8 7 6 5 4 0
* +-+-+-+-+-+-------------------------------------+-+-+-+---------+
* |N|Z|C|V|Q| reserved |I|F|T|M M M M M|
* | | | | | | | | | |4 3 2 1 0|
* +-+-+-+-+-+-------------------------------------+-+-+-+---------+
*/
#define PSR_FLAGS 0xf0000000 /* flags */
#define PSR_N_bit (1 << 31) /* negative */
#define PSR_Z_bit (1 << 30) /* zero */
#define PSR_C_bit (1 << 29) /* carry */
#define PSR_V_bit (1 << 28) /* overflow */
#define PSR_Q_bit (1 << 27) /* saturation */
#define I32_bit (1 << 7) /* IRQ disable */
#define F32_bit (1 << 6) /* FIQ disable */
#define PSR_T_bit (1 << 5) /* Thumb state */
#define PSR_J_bit (1 << 24) /* Java mode */
#define PSR_MODE 0x0000001f /* mode mask */
#define PSR_USR26_MODE 0x00000000
#define PSR_FIQ26_MODE 0x00000001
#define PSR_IRQ26_MODE 0x00000002
#define PSR_SVC26_MODE 0x00000003
#define PSR_USR32_MODE 0x00000010
#define PSR_FIQ32_MODE 0x00000011
#define PSR_IRQ32_MODE 0x00000012
#define PSR_SVC32_MODE 0x00000013
#define PSR_ABT32_MODE 0x00000017
#define PSR_UND32_MODE 0x0000001b
#define PSR_SYS32_MODE 0x0000001f
#define PSR_32_MODE 0x00000010
#define PSR_IN_USR_MODE(psr) (!((psr) & 3)) /* XXX */
#define PSR_IN_32_MODE(psr) ((psr) & PSR_32_MODE)
/* In 26-bit modes, the PSR is stuffed into R15 along with the PC. */
#define R15_MODE 0x00000003
#define R15_MODE_USR 0x00000000
#define R15_MODE_FIQ 0x00000001
#define R15_MODE_IRQ 0x00000002
#define R15_MODE_SVC 0x00000003
#define R15_PC 0x03fffffc
#define R15_FIQ_DISABLE 0x04000000
#define R15_IRQ_DISABLE 0x08000000
#define R15_FLAGS 0xf0000000
#define R15_FLAG_N 0x80000000
#define R15_FLAG_Z 0x40000000
#define R15_FLAG_C 0x20000000
#define R15_FLAG_V 0x10000000
/*
* Co-processor 15: The system control co-processor.
*/
#define ARM_CP15_CPU_ID 0
/*
* The CPU ID register is theoretically structured, but the definitions of
* the fields keep changing.
*/
/* The high-order byte is always the implementor */
#define CPU_ID_IMPLEMENTOR_MASK 0xff000000
#define CPU_ID_ARM_LTD 0x41000000 /* 'A' */
#define CPU_ID_DEC 0x44000000 /* 'D' */
#define CPU_ID_INTEL 0x69000000 /* 'i' */
#define CPU_ID_TI 0x54000000 /* 'T' */
/* How to decide what format the CPUID is in. */
#define CPU_ID_ISOLD(x) (((x) & 0x0000f000) == 0x00000000)
#define CPU_ID_IS7(x) (((x) & 0x0000f000) == 0x00007000)
#define CPU_ID_ISNEW(x) (!CPU_ID_ISOLD(x) && !CPU_ID_IS7(x))
/* On ARM3 and ARM6, this byte holds the foundry ID. */
#define CPU_ID_FOUNDRY_MASK 0x00ff0000
#define CPU_ID_FOUNDRY_VLSI 0x00560000
/* On ARM7 it holds the architecture and variant (sub-model) */
#define CPU_ID_7ARCH_MASK 0x00800000
#define CPU_ID_7ARCH_V3 0x00000000
#define CPU_ID_7ARCH_V4T 0x00800000
#define CPU_ID_7VARIANT_MASK 0x007f0000
/* On more recent ARMs, it does the same, but in a different format */
#define CPU_ID_ARCH_MASK 0x000f0000
#define CPU_ID_ARCH_V3 0x00000000
#define CPU_ID_ARCH_V4 0x00010000
#define CPU_ID_ARCH_V4T 0x00020000
#define CPU_ID_ARCH_V5 0x00030000
#define CPU_ID_ARCH_V5T 0x00040000
#define CPU_ID_ARCH_V5TE 0x00050000
#define CPU_ID_VARIANT_MASK 0x00f00000
/* Next three nybbles are part number */
#define CPU_ID_PARTNO_MASK 0x0000fff0
/* Intel XScale has sub fields in part number */
#define CPU_ID_XSCALE_COREGEN_MASK 0x0000e000 /* core generation */
#define CPU_ID_XSCALE_COREREV_MASK 0x00001c00 /* core revision */
#define CPU_ID_XSCALE_PRODUCT_MASK 0x000003f0 /* product number */
/* And finally, the revision number. */
#define CPU_ID_REVISION_MASK 0x0000000f
/* Individual CPUs are probably best IDed by everything but the revision. */
#define CPU_ID_CPU_MASK 0xfffffff0
/* Fake CPU IDs for ARMs without CP15 */
#define CPU_ID_ARM2 0x41560200
#define CPU_ID_ARM250 0x41560250
/* Pre-ARM7 CPUs -- [15:12] == 0 */
#define CPU_ID_ARM3 0x41560300
#define CPU_ID_ARM600 0x41560600
#define CPU_ID_ARM610 0x41560610
#define CPU_ID_ARM620 0x41560620
/* ARM7 CPUs -- [15:12] == 7 */
#define CPU_ID_ARM700 0x41007000 /* XXX This is a guess. */
#define CPU_ID_ARM710 0x41007100
#define CPU_ID_ARM7500 0x41027100 /* XXX This is a guess. */
#define CPU_ID_ARM710A 0x41047100 /* inc ARM7100 */
#define CPU_ID_ARM7500FE 0x41077100
#define CPU_ID_ARM710T 0x41807100
#define CPU_ID_ARM720T 0x41807200
#define CPU_ID_ARM740T8K 0x41807400 /* XXX no MMU, 8KB cache */
#define CPU_ID_ARM740T4K 0x41817400 /* XXX no MMU, 4KB cache */
/* Post-ARM7 CPUs */
#define CPU_ID_ARM810 0x41018100
#define CPU_ID_ARM920T 0x41129200
#define CPU_ID_ARM922T 0x41029220
#define CPU_ID_ARM940T 0x41029400 /* XXX no MMU */
#define CPU_ID_ARM946ES 0x41049460 /* XXX no MMU */
#define CPU_ID_ARM966ES 0x41049660 /* XXX no MMU */
#define CPU_ID_ARM966ESR1 0x41059660 /* XXX no MMU */
#define CPU_ID_ARM1020E 0x4115a200 /* (AKA arm10 rev 1) */
#define CPU_ID_ARM1022ES 0x4105a220
#define CPU_ID_SA110 0x4401a100
#define CPU_ID_SA1100 0x4401a110
#define CPU_ID_TI925T 0x54029250
#define CPU_ID_SA1110 0x6901b110
#define CPU_ID_IXP1200 0x6901c120
#define CPU_ID_80200 0x69052000
#define CPU_ID_PXA250 0x69052100 /* sans core revision */
#define CPU_ID_PXA210 0x69052120
#define CPU_ID_PXA250A 0x69052100 /* 1st version Core */
#define CPU_ID_PXA210A 0x69052120 /* 1st version Core */
#define CPU_ID_PXA250B 0x69052900 /* 3rd version Core */
#define CPU_ID_PXA210B 0x69052920 /* 3rd version Core */
#define CPU_ID_PXA250C 0x69052d00 /* 4th version Core */
#define CPU_ID_PXA210C 0x69052d20 /* 4th version Core */
#define CPU_ID_80219_400 0x69052e20
#define CPU_ID_80219_600 0x69052e30
#define CPU_ID_PXA27X 0x69054110
#define CPU_ID_80321_400 0x69052420
#define CPU_ID_80321_600 0x69052430
#define CPU_ID_80321_400_B0 0x69052c20
#define CPU_ID_80321_600_B0 0x69052c30
#define CPU_ID_IXP425_533 0x690541c0
#define CPU_ID_IXP425_400 0x690541d0
#define CPU_ID_IXP425_266 0x690541f0
/* ARM3-specific coprocessor 15 registers */
#define ARM3_CP15_FLUSH 1
#define ARM3_CP15_CONTROL 2
#define ARM3_CP15_CACHEABLE 3
#define ARM3_CP15_UPDATEABLE 4
#define ARM3_CP15_DISRUPTIVE 5
/* ARM3 Control register bits */
#define ARM3_CTL_CACHE_ON 0x00000001
#define ARM3_CTL_SHARED 0x00000002
#define ARM3_CTL_MONITOR 0x00000004
/*
* Post-ARM3 CP15 registers:
*
* 1 Control register
*
* 2 Translation Table Base
*
* 3 Domain Access Control
*
* 4 Reserved
*
* 5 Fault Status
*
* 6 Fault Address
*
* 7 Cache/write-buffer Control
*
* 8 TLB Control
*
* 9 Cache Lockdown
*
* 10 TLB Lockdown
*
* 11 Reserved
*
* 12 Reserved
*
* 13 Process ID (for FCSE)
*
* 14 Reserved
*
* 15 Implementation Dependent
*/
/* Some of the definitions below need cleaning up for V3/V4 architectures */
/* CPU control register (CP15 register 1) */
#define CPU_CONTROL_MMU_ENABLE 0x00000001 /* M: MMU/Protection unit enable */
#define CPU_CONTROL_AFLT_ENABLE 0x00000002 /* A: Alignment fault enable */
#define CPU_CONTROL_DC_ENABLE 0x00000004 /* C: IDC/DC enable */
#define CPU_CONTROL_WBUF_ENABLE 0x00000008 /* W: Write buffer enable */
#define CPU_CONTROL_32BP_ENABLE 0x00000010 /* P: 32-bit exception handlers */
#define CPU_CONTROL_32BD_ENABLE 0x00000020 /* D: 32-bit addressing */
#define CPU_CONTROL_LABT_ENABLE 0x00000040 /* L: Late abort enable */
#define CPU_CONTROL_BEND_ENABLE 0x00000080 /* B: Big-endian mode */
#define CPU_CONTROL_SYST_ENABLE 0x00000100 /* S: System protection bit */
#define CPU_CONTROL_ROM_ENABLE 0x00000200 /* R: ROM protection bit */
#define CPU_CONTROL_CPCLK 0x00000400 /* F: Implementation defined */
#define CPU_CONTROL_BPRD_ENABLE 0x00000800 /* Z: Branch prediction enable */
#define CPU_CONTROL_IC_ENABLE 0x00001000 /* I: IC enable */
#define CPU_CONTROL_VECRELOC 0x00002000 /* V: Vector relocation */
#define CPU_CONTROL_ROUNDROBIN 0x00004000 /* RR: Predictable replacement */
#define CPU_CONTROL_V4COMPAT 0x00008000 /* L4: ARMv4 compat LDR R15 etc */
#define CPU_CONTROL_IDC_ENABLE CPU_CONTROL_DC_ENABLE
/* XScale Auxillary Control Register (CP15 register 1, opcode2 1) */
#define XSCALE_AUXCTL_K 0x00000001 /* dis. write buffer coalescing */
#define XSCALE_AUXCTL_P 0x00000002 /* ECC protect page table access */
#define XSCALE_AUXCTL_MD_WB_RA 0x00000000 /* mini-D$ wb, read-allocate */
#define XSCALE_AUXCTL_MD_WB_RWA 0x00000010 /* mini-D$ wb, read/write-allocate */
#define XSCALE_AUXCTL_MD_WT 0x00000020 /* mini-D$ wt, read-allocate */
#define XSCALE_AUXCTL_MD_MASK 0x00000030
/* Cache type register definitions */
#define CPU_CT_ISIZE(x) ((x) & 0xfff) /* I$ info */
#define CPU_CT_DSIZE(x) (((x) >> 12) & 0xfff) /* D$ info */
#define CPU_CT_S (1U << 24) /* split cache */
#define CPU_CT_CTYPE(x) (((x) >> 25) & 0xf) /* cache type */
#define CPU_CT_CTYPE_WT 0 /* write-through */
#define CPU_CT_CTYPE_WB1 1 /* write-back, clean w/ read */
#define CPU_CT_CTYPE_WB2 2 /* w/b, clean w/ cp15,7 */
#define CPU_CT_CTYPE_WB6 6 /* w/b, cp15,7, lockdown fmt A */
#define CPU_CT_CTYPE_WB7 7 /* w/b, cp15,7, lockdown fmt B */
#define CPU_CT_xSIZE_LEN(x) ((x) & 0x3) /* line size */
#define CPU_CT_xSIZE_M (1U << 2) /* multiplier */
#define CPU_CT_xSIZE_ASSOC(x) (((x) >> 3) & 0x7) /* associativity */
#define CPU_CT_xSIZE_SIZE(x) (((x) >> 6) & 0x7) /* size */
/* Fault status register definitions */
#define FAULT_TYPE_MASK 0x0f
#define FAULT_USER 0x10
#define FAULT_WRTBUF_0 0x00 /* Vector Exception */
#define FAULT_WRTBUF_1 0x02 /* Terminal Exception */
#define FAULT_BUSERR_0 0x04 /* External Abort on Linefetch -- Section */
#define FAULT_BUSERR_1 0x06 /* External Abort on Linefetch -- Page */
#define FAULT_BUSERR_2 0x08 /* External Abort on Non-linefetch -- Section */
#define FAULT_BUSERR_3 0x0a /* External Abort on Non-linefetch -- Page */
#define FAULT_BUSTRNL1 0x0c /* External abort on Translation -- Level 1 */
#define FAULT_BUSTRNL2 0x0e /* External abort on Translation -- Level 2 */
#define FAULT_ALIGN_0 0x01 /* Alignment */
#define FAULT_ALIGN_1 0x03 /* Alignment */
#define FAULT_TRANS_S 0x05 /* Translation -- Section */
#define FAULT_TRANS_P 0x07 /* Translation -- Page */
#define FAULT_DOMAIN_S 0x09 /* Domain -- Section */
#define FAULT_DOMAIN_P 0x0b /* Domain -- Page */
#define FAULT_PERM_S 0x0d /* Permission -- Section */
#define FAULT_PERM_P 0x0f /* Permission -- Page */
#define FAULT_IMPRECISE 0x400 /* Imprecise exception (XSCALE) */
/*
* Address of the vector page, low and high versions.
*/
#define ARM_VECTORS_LOW 0x00000000U
#define ARM_VECTORS_HIGH 0xffff0000U
/*
* ARM Instructions
*
* 3 3 2 2 2
* 1 0 9 8 7 0
* +-------+-------------------------------------------------------+
* | cond | instruction dependant |
* |c c c c| |
* +-------+-------------------------------------------------------+
*/
#define INSN_SIZE 4 /* Always 4 bytes */
#define INSN_COND_MASK 0xf0000000 /* Condition mask */
#define INSN_COND_AL 0xe0000000 /* Always condition */
#endif
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