/* $NetBSD: armreg.h,v 1.7 2001/03/10 16:19:59 bjh21 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_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' */ /* 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 /* 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_SA110 0x4401a100 #define CPU_ID_SA1100 0x4401a110 #define CPU_ID_SA1110 0x6901b110 #define CPU_ID_I80200 0x69052000 /* XScale core */ /* 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: */ /* 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 /* Cache type register definitions */ #define CPU_CT_IINFO_MASK 0x00000fff #define CPU_CT_IINFO_SHIFT 0 #define CPU_CT_DINFO_MASK 0x00fff000 #define CPU_CT_DINFO_SHIFT 12 #define CPU_CT_HARVARD 0x01000000 #define CPU_CT_TYPE_MASK 0x1e000000 /* "Info" subfields -- see ARM ARM for meanings. */ #define CPU_CT_LINE_MASK 0x00000003 #define CPU_CT_M_BIT 0x00000004 #define CPU_CT_ASSOC_MASK 0x00000038 #define CPU_CT_SIZE_MASK 0x000001c0 /* 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 */ /* * 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