354 lines
17 KiB
C
354 lines
17 KiB
C
/* MN10300 Core system registers
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*
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* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public Licence
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* as published by the Free Software Foundation; either version
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* 2 of the Licence, or (at your option) any later version.
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*/
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#ifndef _ASM_CPU_REGS_H
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#define _ASM_CPU_REGS_H
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#ifndef __ASSEMBLY__
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#include <linux/types.h>
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#endif
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/* we tell the compiler to pretend to be AM33 so that it doesn't try and use
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* the FP regs, but tell the assembler that we're actually allowed AM33v2
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* instructions */
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#ifndef __ASSEMBLY__
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asm(" .am33_2\n");
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#else
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.am33_2
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#endif
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#ifdef __KERNEL__
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#ifndef __ASSEMBLY__
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#define __SYSREG(ADDR, TYPE) (*(volatile TYPE *)(ADDR))
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#define __SYSREGC(ADDR, TYPE) (*(const volatile TYPE *)(ADDR))
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#else
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#define __SYSREG(ADDR, TYPE) ADDR
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#define __SYSREGC(ADDR, TYPE) ADDR
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#endif
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/* CPU registers */
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#define EPSW_FLAG_Z 0x00000001 /* zero flag */
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#define EPSW_FLAG_N 0x00000002 /* negative flag */
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#define EPSW_FLAG_C 0x00000004 /* carry flag */
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#define EPSW_FLAG_V 0x00000008 /* overflow flag */
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#define EPSW_IM 0x00000700 /* interrupt mode */
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#define EPSW_IM_0 0x00000000 /* interrupt mode 0 */
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#define EPSW_IM_1 0x00000100 /* interrupt mode 1 */
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#define EPSW_IM_2 0x00000200 /* interrupt mode 2 */
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#define EPSW_IM_3 0x00000300 /* interrupt mode 3 */
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#define EPSW_IM_4 0x00000400 /* interrupt mode 4 */
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#define EPSW_IM_5 0x00000500 /* interrupt mode 5 */
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#define EPSW_IM_6 0x00000600 /* interrupt mode 6 */
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#define EPSW_IM_7 0x00000700 /* interrupt mode 7 */
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#define EPSW_IE 0x00000800 /* interrupt enable */
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#define EPSW_S 0x00003000 /* software auxiliary bits */
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#define EPSW_T 0x00008000 /* trace enable */
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#define EPSW_nSL 0x00010000 /* not supervisor level */
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#define EPSW_NMID 0x00020000 /* nonmaskable interrupt disable */
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#define EPSW_nAR 0x00040000 /* register bank control */
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#define EPSW_ML 0x00080000 /* monitor level */
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#define EPSW_FE 0x00100000 /* FPU enable */
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#define EPSW_IM_SHIFT 8 /* EPSW_IM_SHIFT determines the interrupt mode */
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#define NUM2EPSW_IM(num) ((num) << EPSW_IM_SHIFT)
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/* FPU registers */
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#define FPCR_EF_I 0x00000001 /* inexact result FPU exception flag */
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#define FPCR_EF_U 0x00000002 /* underflow FPU exception flag */
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#define FPCR_EF_O 0x00000004 /* overflow FPU exception flag */
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#define FPCR_EF_Z 0x00000008 /* zero divide FPU exception flag */
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#define FPCR_EF_V 0x00000010 /* invalid operand FPU exception flag */
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#define FPCR_EE_I 0x00000020 /* inexact result FPU exception enable */
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#define FPCR_EE_U 0x00000040 /* underflow FPU exception enable */
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#define FPCR_EE_O 0x00000080 /* overflow FPU exception enable */
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#define FPCR_EE_Z 0x00000100 /* zero divide FPU exception enable */
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#define FPCR_EE_V 0x00000200 /* invalid operand FPU exception enable */
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#define FPCR_EC_I 0x00000400 /* inexact result FPU exception cause */
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#define FPCR_EC_U 0x00000800 /* underflow FPU exception cause */
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#define FPCR_EC_O 0x00001000 /* overflow FPU exception cause */
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#define FPCR_EC_Z 0x00002000 /* zero divide FPU exception cause */
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#define FPCR_EC_V 0x00004000 /* invalid operand FPU exception cause */
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#define FPCR_RM 0x00030000 /* rounding mode */
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#define FPCR_RM_NEAREST 0x00000000 /* - round to nearest value */
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#define FPCR_FCC_U 0x00040000 /* FPU unordered condition code */
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#define FPCR_FCC_E 0x00080000 /* FPU equal condition code */
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#define FPCR_FCC_G 0x00100000 /* FPU greater than condition code */
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#define FPCR_FCC_L 0x00200000 /* FPU less than condition code */
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#define FPCR_INIT 0x00000000 /* no exceptions, rounding to nearest */
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/* CPU control registers */
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#define CPUP __SYSREG(0xc0000020, u16) /* CPU pipeline register */
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#define CPUP_DWBD 0x0020 /* write buffer disable flag */
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#define CPUP_IPFD 0x0040 /* instruction prefetch disable flag */
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#define CPUP_EXM 0x0080 /* exception operation mode */
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#define CPUP_EXM_AM33V1 0x0000 /* - AM33 v1 exception mode */
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#define CPUP_EXM_AM33V2 0x0080 /* - AM33 v2 exception mode */
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#define CPUM __SYSREG(0xc0000040, u16) /* CPU mode register */
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#define CPUM_SLEEP 0x0004 /* set to enter sleep state */
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#define CPUM_HALT 0x0008 /* set to enter halt state */
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#define CPUM_STOP 0x0010 /* set to enter stop state */
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#define CPUREV __SYSREGC(0xc0000050, u32) /* CPU revision register */
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#define CPUREV_TYPE 0x0000000f /* CPU type */
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#define CPUREV_TYPE_S 0
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#define CPUREV_TYPE_AM33_1 0x00000000 /* - AM33-1 core, AM33/1.00 arch */
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#define CPUREV_TYPE_AM33_2 0x00000001 /* - AM33-2 core, AM33/2.00 arch */
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#define CPUREV_TYPE_AM34_1 0x00000002 /* - AM34-1 core, AM33/2.00 arch */
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#define CPUREV_TYPE_AM33_3 0x00000003 /* - AM33-3 core, AM33/2.00 arch */
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#define CPUREV_TYPE_AM34_2 0x00000004 /* - AM34-2 core, AM33/3.00 arch */
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#define CPUREV_REVISION 0x000000f0 /* CPU revision */
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#define CPUREV_REVISION_S 4
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#define CPUREV_ICWAY 0x00000f00 /* number of instruction cache ways */
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#define CPUREV_ICWAY_S 8
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#define CPUREV_ICSIZE 0x0000f000 /* instruction cache way size */
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#define CPUREV_ICSIZE_S 12
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#define CPUREV_DCWAY 0x000f0000 /* number of data cache ways */
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#define CPUREV_DCWAY_S 16
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#define CPUREV_DCSIZE 0x00f00000 /* data cache way size */
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#define CPUREV_DCSIZE_S 20
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#define CPUREV_FPUTYPE 0x0f000000 /* FPU core type */
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#define CPUREV_FPUTYPE_NONE 0x00000000 /* - no FPU core implemented */
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#define CPUREV_OCDCTG 0xf0000000 /* on-chip debug function category */
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#define DCR __SYSREG(0xc0000030, u16) /* Debug control register */
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/* interrupt/exception control registers */
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#define IVAR0 __SYSREG(0xc0000000, u16) /* interrupt vector 0 */
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#define IVAR1 __SYSREG(0xc0000004, u16) /* interrupt vector 1 */
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#define IVAR2 __SYSREG(0xc0000008, u16) /* interrupt vector 2 */
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#define IVAR3 __SYSREG(0xc000000c, u16) /* interrupt vector 3 */
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#define IVAR4 __SYSREG(0xc0000010, u16) /* interrupt vector 4 */
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#define IVAR5 __SYSREG(0xc0000014, u16) /* interrupt vector 5 */
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#define IVAR6 __SYSREG(0xc0000018, u16) /* interrupt vector 6 */
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#define TBR __SYSREG(0xc0000024, u32) /* Trap table base */
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#define TBR_TB 0xff000000 /* table base address bits 31-24 */
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#define TBR_INT_CODE 0x00ffffff /* interrupt code */
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#define DEAR __SYSREG(0xc0000038, u32) /* Data access exception address */
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#define sISR __SYSREG(0xc0000044, u32) /* Supervisor interrupt status */
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#define sISR_IRQICE 0x00000001 /* ICE interrupt */
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#define sISR_ISTEP 0x00000002 /* single step interrupt */
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#define sISR_MISSA 0x00000004 /* memory access address misalignment fault */
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#define sISR_UNIMP 0x00000008 /* unimplemented instruction execution fault */
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#define sISR_PIEXE 0x00000010 /* program interrupt */
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#define sISR_MEMERR 0x00000020 /* illegal memory access fault */
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#define sISR_IBREAK 0x00000040 /* instraction break interrupt */
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#define sISR_DBSRL 0x00000080 /* debug serial interrupt */
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#define sISR_PERIDB 0x00000100 /* peripheral debug interrupt */
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#define sISR_EXUNIMP 0x00000200 /* unimplemented ex-instruction execution fault */
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#define sISR_OBREAK 0x00000400 /* operand break interrupt */
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#define sISR_PRIV 0x00000800 /* privileged instruction execution fault */
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#define sISR_BUSERR 0x00001000 /* bus error fault */
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#define sISR_DBLFT 0x00002000 /* double fault */
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#define sISR_DBG 0x00008000 /* debug reserved interrupt */
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#define sISR_ITMISS 0x00010000 /* instruction TLB miss */
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#define sISR_DTMISS 0x00020000 /* data TLB miss */
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#define sISR_ITEX 0x00040000 /* instruction TLB access exception */
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#define sISR_DTEX 0x00080000 /* data TLB access exception */
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#define sISR_ILGIA 0x00100000 /* illegal instruction access exception */
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#define sISR_ILGDA 0x00200000 /* illegal data access exception */
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#define sISR_IOIA 0x00400000 /* internal I/O space instruction access excep */
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#define sISR_PRIVA 0x00800000 /* privileged space instruction access excep */
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#define sISR_PRIDA 0x01000000 /* privileged space data access excep */
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#define sISR_DISA 0x02000000 /* data space instruction access excep */
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#define sISR_SYSC 0x04000000 /* system call instruction excep */
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#define sISR_FPUD 0x08000000 /* FPU disabled excep */
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#define sISR_FPUUI 0x10000000 /* FPU unimplemented instruction excep */
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#define sISR_FPUOP 0x20000000 /* FPU operation excep */
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#define sISR_NE 0x80000000 /* multiple synchronous exceptions excep */
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/* cache control registers */
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#define CHCTR __SYSREG(0xc0000070, u16) /* cache control */
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#define CHCTR_ICEN 0x0001 /* instruction cache enable */
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#define CHCTR_DCEN 0x0002 /* data cache enable */
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#define CHCTR_ICBUSY 0x0004 /* instruction cache busy */
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#define CHCTR_DCBUSY 0x0008 /* data cache busy */
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#define CHCTR_ICINV 0x0010 /* instruction cache invalidate */
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#define CHCTR_DCINV 0x0020 /* data cache invalidate */
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#define CHCTR_DCWTMD 0x0040 /* data cache writing mode */
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#define CHCTR_DCWTMD_WRBACK 0x0000 /* - write back mode */
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#define CHCTR_DCWTMD_WRTHROUGH 0x0040 /* - write through mode */
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#define CHCTR_DCALMD 0x0080 /* data cache allocation mode */
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#define CHCTR_ICWMD 0x0f00 /* instruction cache way mode */
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#define CHCTR_DCWMD 0xf000 /* data cache way mode */
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#ifdef CONFIG_AM34_2
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#define ICIVCR __SYSREG(0xc0000c00, u32) /* icache area invalidate control */
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#define ICIVCR_ICIVBSY 0x00000008 /* icache area invalidate busy */
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#define ICIVCR_ICI 0x00000001 /* icache area invalidate */
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#define ICIVMR __SYSREG(0xc0000c04, u32) /* icache area invalidate mask */
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#define DCPGCR __SYSREG(0xc0000c10, u32) /* data cache area purge control */
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#define DCPGCR_DCPGBSY 0x00000008 /* data cache area purge busy */
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#define DCPGCR_DCP 0x00000002 /* data cache area purge */
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#define DCPGCR_DCI 0x00000001 /* data cache area invalidate */
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#define DCPGMR __SYSREG(0xc0000c14, u32) /* data cache area purge mask */
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#endif /* CONFIG_AM34_2 */
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/* MMU control registers */
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#define MMUCTR __SYSREG(0xc0000090, u32) /* MMU control register */
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#define MMUCTR_IRP 0x0000003f /* instruction TLB replace pointer */
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#define MMUCTR_ITE 0x00000040 /* instruction TLB enable */
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#define MMUCTR_IIV 0x00000080 /* instruction TLB invalidate */
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#define MMUCTR_ITL 0x00000700 /* instruction TLB lock pointer */
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#define MMUCTR_ITL_NOLOCK 0x00000000 /* - no lock */
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#define MMUCTR_ITL_LOCK0 0x00000100 /* - entry 0 locked */
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#define MMUCTR_ITL_LOCK0_1 0x00000200 /* - entry 0-1 locked */
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#define MMUCTR_ITL_LOCK0_3 0x00000300 /* - entry 0-3 locked */
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#define MMUCTR_ITL_LOCK0_7 0x00000400 /* - entry 0-7 locked */
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#define MMUCTR_ITL_LOCK0_15 0x00000500 /* - entry 0-15 locked */
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#define MMUCTR_CE 0x00008000 /* cacheable bit enable */
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#define MMUCTR_DRP 0x003f0000 /* data TLB replace pointer */
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#define MMUCTR_DTE 0x00400000 /* data TLB enable */
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#define MMUCTR_DIV 0x00800000 /* data TLB invalidate */
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#define MMUCTR_DTL 0x07000000 /* data TLB lock pointer */
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#define MMUCTR_DTL_NOLOCK 0x00000000 /* - no lock */
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#define MMUCTR_DTL_LOCK0 0x01000000 /* - entry 0 locked */
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#define MMUCTR_DTL_LOCK0_1 0x02000000 /* - entry 0-1 locked */
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#define MMUCTR_DTL_LOCK0_3 0x03000000 /* - entry 0-3 locked */
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#define MMUCTR_DTL_LOCK0_7 0x04000000 /* - entry 0-7 locked */
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#define MMUCTR_DTL_LOCK0_15 0x05000000 /* - entry 0-15 locked */
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#ifdef CONFIG_AM34_2
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#define MMUCTR_WTE 0x80000000 /* write-through cache TLB entry bit enable */
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#endif
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#define PIDR __SYSREG(0xc0000094, u16) /* PID register */
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#define PIDR_PID 0x00ff /* process identifier */
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#define PTBR __SYSREG(0xc0000098, unsigned long) /* Page table base register */
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#define IPTEL __SYSREG(0xc00000a0, u32) /* instruction TLB entry */
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#define DPTEL __SYSREG(0xc00000b0, u32) /* data TLB entry */
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#define xPTEL_V 0x00000001 /* TLB entry valid */
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#define xPTEL_UNUSED1 0x00000002 /* unused bit */
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#define xPTEL_UNUSED2 0x00000004 /* unused bit */
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#define xPTEL_C 0x00000008 /* cached if set */
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#define xPTEL_PV 0x00000010 /* page valid */
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#define xPTEL_D 0x00000020 /* dirty */
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#define xPTEL_PR 0x000001c0 /* page protection */
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#define xPTEL_PR_ROK 0x00000000 /* - R/O kernel */
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#define xPTEL_PR_RWK 0x00000100 /* - R/W kernel */
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#define xPTEL_PR_ROK_ROU 0x00000080 /* - R/O kernel and R/O user */
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#define xPTEL_PR_RWK_ROU 0x00000180 /* - R/W kernel and R/O user */
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#define xPTEL_PR_RWK_RWU 0x000001c0 /* - R/W kernel and R/W user */
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#define xPTEL_G 0x00000200 /* global (use PID if 0) */
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#define xPTEL_PS 0x00000c00 /* page size */
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#define xPTEL_PS_4Kb 0x00000000 /* - 4Kb page */
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#define xPTEL_PS_128Kb 0x00000400 /* - 128Kb page */
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#define xPTEL_PS_1Kb 0x00000800 /* - 1Kb page */
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#define xPTEL_PS_4Mb 0x00000c00 /* - 4Mb page */
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#define xPTEL_PPN 0xfffff006 /* physical page number */
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#define IPTEU __SYSREG(0xc00000a4, u32) /* instruction TLB virtual addr */
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#define DPTEU __SYSREG(0xc00000b4, u32) /* data TLB virtual addr */
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#define xPTEU_VPN 0xfffffc00 /* virtual page number */
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#define xPTEU_PID 0x000000ff /* process identifier to which applicable */
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#define IPTEL2 __SYSREG(0xc00000a8, u32) /* instruction TLB entry */
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#define DPTEL2 __SYSREG(0xc00000b8, u32) /* data TLB entry */
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#define xPTEL2_V 0x00000001 /* TLB entry valid */
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#define xPTEL2_C 0x00000002 /* cacheable */
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#define xPTEL2_PV 0x00000004 /* page valid */
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#define xPTEL2_D 0x00000008 /* dirty */
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#define xPTEL2_PR 0x00000070 /* page protection */
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#define xPTEL2_PR_ROK 0x00000000 /* - R/O kernel */
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#define xPTEL2_PR_RWK 0x00000040 /* - R/W kernel */
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#define xPTEL2_PR_ROK_ROU 0x00000020 /* - R/O kernel and R/O user */
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#define xPTEL2_PR_RWK_ROU 0x00000060 /* - R/W kernel and R/O user */
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#define xPTEL2_PR_RWK_RWU 0x00000070 /* - R/W kernel and R/W user */
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#define xPTEL2_G 0x00000080 /* global (use PID if 0) */
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#define xPTEL2_PS 0x00000300 /* page size */
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#define xPTEL2_PS_4Kb 0x00000000 /* - 4Kb page */
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#define xPTEL2_PS_128Kb 0x00000100 /* - 128Kb page */
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#define xPTEL2_PS_1Kb 0x00000200 /* - 1Kb page */
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#define xPTEL2_PS_4Mb 0x00000300 /* - 4Mb page */
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#define xPTEL2_CWT 0x00000400 /* cacheable write-through */
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#define xPTEL2_UNUSED1 0x00000800 /* unused bit (broadcast mask) */
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#define xPTEL2_PPN 0xfffff000 /* physical page number */
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#define xPTEL2_V_BIT 0 /* bit numbers corresponding to above masks */
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#define xPTEL2_C_BIT 1
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#define xPTEL2_PV_BIT 2
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#define xPTEL2_D_BIT 3
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#define xPTEL2_G_BIT 7
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#define xPTEL2_UNUSED1_BIT 11
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#define MMUFCR __SYSREGC(0xc000009c, u32) /* MMU exception cause */
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#define MMUFCR_IFC __SYSREGC(0xc000009c, u16) /* MMU instruction excep cause */
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#define MMUFCR_DFC __SYSREGC(0xc000009e, u16) /* MMU data exception cause */
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#define MMUFCR_xFC_TLBMISS 0x0001 /* TLB miss flag */
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#define MMUFCR_xFC_INITWR 0x0002 /* initial write excep flag */
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#define MMUFCR_xFC_PGINVAL 0x0004 /* page invalid excep flag */
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#define MMUFCR_xFC_PROTVIOL 0x0008 /* protection violation excep flag */
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#define MMUFCR_xFC_ACCESS 0x0010 /* access level flag */
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#define MMUFCR_xFC_ACCESS_USR 0x0000 /* - user mode */
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#define MMUFCR_xFC_ACCESS_SR 0x0010 /* - supervisor mode */
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#define MMUFCR_xFC_TYPE 0x0020 /* access type flag */
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#define MMUFCR_xFC_TYPE_READ 0x0000 /* - read */
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#define MMUFCR_xFC_TYPE_WRITE 0x0020 /* - write */
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#define MMUFCR_xFC_PR 0x01c0 /* page protection flag */
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#define MMUFCR_xFC_PR_ROK 0x0000 /* - R/O kernel */
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#define MMUFCR_xFC_PR_RWK 0x0100 /* - R/W kernel */
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#define MMUFCR_xFC_PR_ROK_ROU 0x0080 /* - R/O kernel and R/O user */
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#define MMUFCR_xFC_PR_RWK_ROU 0x0180 /* - R/W kernel and R/O user */
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#define MMUFCR_xFC_PR_RWK_RWU 0x01c0 /* - R/W kernel and R/W user */
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#define MMUFCR_xFC_ILLADDR 0x0200 /* illegal address excep flag */
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#ifdef CONFIG_MN10300_HAS_ATOMIC_OPS_UNIT
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/* atomic operation registers */
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#define AAR __SYSREG(0xc0000a00, u32) /* cacheable address */
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#define AAR2 __SYSREG(0xc0000a04, u32) /* uncacheable address */
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#define ADR __SYSREG(0xc0000a08, u32) /* data */
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#define ASR __SYSREG(0xc0000a0c, u32) /* status */
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#define AARU __SYSREG(0xd400aa00, u32) /* user address */
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#define ADRU __SYSREG(0xd400aa08, u32) /* user data */
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#define ASRU __SYSREG(0xd400aa0c, u32) /* user status */
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#define ASR_RW 0x00000008 /* read */
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#define ASR_BW 0x00000004 /* bus error */
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#define ASR_IW 0x00000002 /* interrupt */
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#define ASR_LW 0x00000001 /* bus lock */
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#define ASRU_RW ASR_RW /* read */
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#define ASRU_BW ASR_BW /* bus error */
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#define ASRU_IW ASR_IW /* interrupt */
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#define ASRU_LW ASR_LW /* bus lock */
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/* in inline ASM, we stick the base pointer in to a reg and use offsets from
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* it */
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#define ATOMIC_OPS_BASE_ADDR 0xc0000a00
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#ifndef __ASSEMBLY__
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asm(
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"_AAR = 0\n"
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"_AAR2 = 4\n"
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"_ADR = 8\n"
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"_ASR = 12\n");
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#else
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#define _AAR 0
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#define _AAR2 4
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#define _ADR 8
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#define _ASR 12
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#endif
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/* physical page address for userspace atomic operations registers */
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#define USER_ATOMIC_OPS_PAGE_ADDR 0xd400a000
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#endif /* CONFIG_MN10300_HAS_ATOMIC_OPS_UNIT */
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#endif /* __KERNEL__ */
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#endif /* _ASM_CPU_REGS_H */
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