/* $NetBSD: cpu.h,v 1.15 1998/02/21 22:49:18 mark Exp $ */ /* * 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. * * RiscBSD kernel project * * cpu.h * * CPU specific symbols * * Created : 18/09/94 * * Based on kate/katelib/arm6.h */ #ifndef _ARM32_CPU_H_ #define _ARM32_CPU_H_ #ifndef _LOCORE #include #endif /* !_LOCORE */ #include #if defined(CPU_ARM7500) && !defined(CPU_ARM7) #error "option CPU_ARM7 is required with CPU_ARM7500" #endif #ifdef CPU_ARM7500 #ifdef CPU_ARM6 #error "CPU options CPU_ARM6 and CPU_ARM7500 are not compatible" #endif #ifdef CPU_ARM8 #error "CPU options CPU_ARM8 and CPU_ARM7500 are not compatible" #endif #ifdef CPU_SA110 #error "CPU options CPU_SA110 and CPU_ARM7500 are not compatible" #endif #endif /* CPU_ARM7500 */ #define COPY_SIGCODE /* copy sigcode above user stack in exec */ /* * ARM Process Status Register * * The picture in the ARM manuals looks like this: * 3 3 2 2 2 * 1 0 9 8 7 8 7 6 5 4 0 * +-------+---------------------------------------+-+-+-+---------+ * | flags | reserved |I|F| |M M M M M| * |n z c v| | | | |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 I32_bit (1 << 7) /* IRQ disable */ #define F32_bit (1 << 6) /* FIQ disable */ #define PSR_MODE 0x0000001f /* mode mask */ #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_32_MODE 0x00000010 #define PSR_IN_USR_MODE(psr) (!((psr) & 3)) /* XXX */ #define PSR_IN_32_MODE(psr) ((psr) & PSR_32_MODE) /* * 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 */ /* Some of the definitions below need cleaning up for V3/V4 architectures */ #define CPU_ID_DESIGNER_MASK 0xff000000 #define CPU_ID_ARM_LTD 0x41000000 #define CPU_ID_DEC 0x44000000 #define CPU_ID_TYPE_MASK 0x00ff0000 #define CPU_ID_ARM 0x00560000 #define CPU_ID_ARM7500 0x00020000 #define CPU_ID_CPU_MASK 0x0000fff0 #define ID_ARM610 0x00000610 #define ID_ARM700 0x00007000 #define ID_ARM710 0x00007100 #define ID_ARM810 0x00008100 #define ID_SA110 0x0000a100 #define CPU_ID_REVISION_MASK 0x0000000f #define CPU_CONTROL_MMU_ENABLE 0x0001 #define CPU_CONTROL_AFLT_ENABLE 0x0002 #define CPU_CONTROL_DC_ENABLE 0x0004 #define CPU_CONTROL_WBUF_ENABLE 0x0008 #define CPU_CONTROL_32BP_ENABLE 0x0010 #define CPU_CONTROL_32BD_ENABLE 0x0020 #define CPU_CONTROL_LABT_ENABLE 0x0040 #define CPU_CONTROL_BEND_ENABLE 0x0080 #define CPU_CONTROL_SYST_ENABLE 0x0100 #define CPU_CONTROL_ROM_ENABLE 0x0200 #define CPU_CONTROL_CPCLK 0x0400 #define CPU_CONTROL_BPRD_ENABLE 0x0800 #define CPU_CONTROL_IC_ENABLE 0x1000 #define CPU_CONTROL_IDC_ENABLE CPU_CONTROL_DC_ENABLE /* Fault status register definitions */ #define FAULT_TYPE_MASK 0x0f #define FAULT_USER 0x10 #define FAULT_WRTBUF_0 0x00 #define FAULT_WRTBUF_1 0x02 #define FAULT_BUSERR_0 0x04 #define FAULT_BUSERR_1 0x06 #define FAULT_BUSERR_2 0x08 #define FAULT_BUSERR_3 0x0a #define FAULT_ALIGN_0 0x01 #define FAULT_ALIGN_1 0x03 #define FAULT_BUSTRNL1 0x0c #define FAULT_BUSTRNL2 0x0e #define FAULT_TRANS_S 0x05 #define FAULT_TRANS_P 0x07 #define FAULT_DOMAIN_S 0x09 #define FAULT_DOMAIN_P 0x0b #define FAULT_PERM_S 0x0d #define FAULT_PERM_P 0x0f #ifdef _LOCORE #define IRQdisable \ stmfd sp!, {r0} ; \ mrs r0, cpsr_all ; \ orr r0, r0, #(I32_bit) ; \ msr cpsr_all, r0 ; \ ldmfd sp!, {r0} #define IRQenable \ stmfd sp!, {r0} ; \ mrs r0, cpsr_all ; \ bic r0, r0, #(I32_bit) ; \ msr cpsr_all, r0 ; \ ldmfd sp!, {r0} #else #define IRQdisable SetCPSR(I32_bit, I32_bit); #define IRQenable SetCPSR(I32_bit, 0); #endif /* _LOCORE */ /* * Return TRUE/FALSE (1/0) depending on whether the frame came from USR * mode or not. */ #define CLKF_USERMODE(frame) ((frame->if_spsr & PSR_MODE) == PSR_USR32_MODE) /* * This needs straighening, prob is the frame does not have info on the priority * a guess that needs trying is (current_spl_level == SPL0) */ #define CLKF_BASEPRI(frame) ((frame->if_spsr & PSR_MODE) == PSR_USR32_MODE) #define CLKF_PC(frame) (frame->if_pc) /*#define CLKF_INTR(frame) (current_intr_depth > 1)*/ /* Hack to treat FPE time as interrupt time so we can measure it */ #define CLKF_INTR(frame) ((current_intr_depth > 1) || (frame->if_spsr & PSR_MODE) == PSR_UND32_MODE) /* * definitions of cpu-dependent requirements * referenced in generic code */ #define cpu_wait(p) /* nothing */ /* * Notify the current process (p) that it has a signal pending, * process as soon as possible. */ #define signotify(p) setsoftast() #if defined(_KERNEL) && !defined(_LOCORE) extern int current_intr_depth; /* stubs.c */ void need_resched __P((void)); void need_proftick __P((struct proc *p)); /* locore.S */ void atomic_set_bit __P((u_int *address, u_int setmask)); void atomic_clear_bit __P((u_int *address, u_int clearmask)); /* cpuswitch.S */ struct pcb; void savectx __P((struct pcb *pcb)); /* ast.c */ void userret __P((register struct proc *p, int pc, u_quad_t oticks)); /* machdep.h */ void bootsync __P((void)); /* strstr.c */ char *strstr __P((const char *s1, const char *s2)); #endif /* _KERNEL && !_LOCORE */ /* * CTL_MACHDEP definitions. */ #define CPU_DEBUG 1 /* int: misc kernel debug control */ #define CPU_MAXID 2 /* number of valid machdep ids */ #define CTL_MACHDEP_NAMES { \ { 0, 0 }, \ { "debug", CTLTYPE_INT }, \ } #endif /* !_ARM32_CPU_H_ */ /* End of cpu.h */