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1 | /* MN10300 Core system registers |
2 | * | |
3 | * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. | |
4 | * Written by David Howells (dhowells@redhat.com) | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public Licence | |
8 | * as published by the Free Software Foundation; either version | |
9 | * 2 of the Licence, or (at your option) any later version. | |
10 | */ | |
11 | #ifndef _ASM_CPU_REGS_H | |
12 | #define _ASM_CPU_REGS_H | |
13 | ||
14 | #ifndef __ASSEMBLY__ | |
15 | #include <linux/types.h> | |
16 | #endif | |
17 | ||
18 | #ifdef CONFIG_MN10300_CPU_AM33V2 | |
19 | /* we tell the compiler to pretend to be AM33 so that it doesn't try and use | |
20 | * the FP regs, but tell the assembler that we're actually allowed AM33v2 | |
21 | * instructions */ | |
22 | #ifndef __ASSEMBLY__ | |
23 | asm(" .am33_2\n"); | |
24 | #else | |
25 | .am33_2 | |
26 | #endif | |
27 | #endif | |
28 | ||
29 | #ifdef __KERNEL__ | |
30 | ||
31 | #ifndef __ASSEMBLY__ | |
32 | #define __SYSREG(ADDR, TYPE) (*(volatile TYPE *)(ADDR)) | |
33 | #define __SYSREGC(ADDR, TYPE) (*(const volatile TYPE *)(ADDR)) | |
34 | #else | |
35 | #define __SYSREG(ADDR, TYPE) ADDR | |
36 | #define __SYSREGC(ADDR, TYPE) ADDR | |
37 | #endif | |
38 | ||
39 | /* CPU registers */ | |
40 | #define EPSW_FLAG_Z 0x00000001 /* zero flag */ | |
41 | #define EPSW_FLAG_N 0x00000002 /* negative flag */ | |
42 | #define EPSW_FLAG_C 0x00000004 /* carry flag */ | |
43 | #define EPSW_FLAG_V 0x00000008 /* overflow flag */ | |
44 | #define EPSW_IM 0x00000700 /* interrupt mode */ | |
45 | #define EPSW_IM_0 0x00000000 /* interrupt mode 0 */ | |
46 | #define EPSW_IM_1 0x00000100 /* interrupt mode 1 */ | |
47 | #define EPSW_IM_2 0x00000200 /* interrupt mode 2 */ | |
48 | #define EPSW_IM_3 0x00000300 /* interrupt mode 3 */ | |
49 | #define EPSW_IM_4 0x00000400 /* interrupt mode 4 */ | |
50 | #define EPSW_IM_5 0x00000500 /* interrupt mode 5 */ | |
51 | #define EPSW_IM_6 0x00000600 /* interrupt mode 6 */ | |
52 | #define EPSW_IM_7 0x00000700 /* interrupt mode 7 */ | |
53 | #define EPSW_IE 0x00000800 /* interrupt enable */ | |
54 | #define EPSW_S 0x00003000 /* software auxilliary bits */ | |
55 | #define EPSW_T 0x00008000 /* trace enable */ | |
56 | #define EPSW_nSL 0x00010000 /* not supervisor level */ | |
57 | #define EPSW_NMID 0x00020000 /* nonmaskable interrupt disable */ | |
58 | #define EPSW_nAR 0x00040000 /* register bank control */ | |
59 | #define EPSW_ML 0x00080000 /* monitor level */ | |
60 | #define EPSW_FE 0x00100000 /* FPU enable */ | |
61 | ||
62 | /* FPU registers */ | |
63 | #define FPCR_EF_I 0x00000001 /* inexact result FPU exception flag */ | |
64 | #define FPCR_EF_U 0x00000002 /* underflow FPU exception flag */ | |
65 | #define FPCR_EF_O 0x00000004 /* overflow FPU exception flag */ | |
66 | #define FPCR_EF_Z 0x00000008 /* zero divide FPU exception flag */ | |
67 | #define FPCR_EF_V 0x00000010 /* invalid operand FPU exception flag */ | |
68 | #define FPCR_EE_I 0x00000020 /* inexact result FPU exception enable */ | |
69 | #define FPCR_EE_U 0x00000040 /* underflow FPU exception enable */ | |
70 | #define FPCR_EE_O 0x00000080 /* overflow FPU exception enable */ | |
71 | #define FPCR_EE_Z 0x00000100 /* zero divide FPU exception enable */ | |
72 | #define FPCR_EE_V 0x00000200 /* invalid operand FPU exception enable */ | |
73 | #define FPCR_EC_I 0x00000400 /* inexact result FPU exception cause */ | |
74 | #define FPCR_EC_U 0x00000800 /* underflow FPU exception cause */ | |
75 | #define FPCR_EC_O 0x00001000 /* overflow FPU exception cause */ | |
76 | #define FPCR_EC_Z 0x00002000 /* zero divide FPU exception cause */ | |
77 | #define FPCR_EC_V 0x00004000 /* invalid operand FPU exception cause */ | |
78 | #define FPCR_RM 0x00030000 /* rounding mode */ | |
79 | #define FPCR_RM_NEAREST 0x00000000 /* - round to nearest value */ | |
80 | #define FPCR_FCC_U 0x00040000 /* FPU unordered condition code */ | |
81 | #define FPCR_FCC_E 0x00080000 /* FPU equal condition code */ | |
82 | #define FPCR_FCC_G 0x00100000 /* FPU greater than condition code */ | |
83 | #define FPCR_FCC_L 0x00200000 /* FPU less than condition code */ | |
84 | #define FPCR_INIT 0x00000000 /* no exceptions, rounding to nearest */ | |
85 | ||
86 | /* CPU control registers */ | |
87 | #define CPUP __SYSREG(0xc0000020, u16) /* CPU pipeline register */ | |
88 | #define CPUP_DWBD 0x0020 /* write buffer disable flag */ | |
89 | #define CPUP_IPFD 0x0040 /* instruction prefetch disable flag */ | |
90 | #define CPUP_EXM 0x0080 /* exception operation mode */ | |
91 | #define CPUP_EXM_AM33V1 0x0000 /* - AM33 v1 exception mode */ | |
92 | #define CPUP_EXM_AM33V2 0x0080 /* - AM33 v2 exception mode */ | |
93 | ||
94 | #define CPUM __SYSREG(0xc0000040, u16) /* CPU mode register */ | |
95 | #define CPUM_SLEEP 0x0004 /* set to enter sleep state */ | |
96 | #define CPUM_HALT 0x0008 /* set to enter halt state */ | |
97 | #define CPUM_STOP 0x0010 /* set to enter stop state */ | |
98 | ||
99 | #define CPUREV __SYSREGC(0xc0000050, u32) /* CPU revision register */ | |
100 | #define CPUREV_TYPE 0x0000000f /* CPU type */ | |
101 | #define CPUREV_TYPE_S 0 | |
102 | #define CPUREV_TYPE_AM33V1 0x00000000 /* - AM33 V1 core, AM33/1.00 arch */ | |
103 | #define CPUREV_TYPE_AM33V2 0x00000001 /* - AM33 V2 core, AM33/2.00 arch */ | |
104 | #define CPUREV_TYPE_AM34V1 0x00000002 /* - AM34 V1 core, AM33/2.00 arch */ | |
105 | #define CPUREV_REVISION 0x000000f0 /* CPU revision */ | |
106 | #define CPUREV_REVISION_S 4 | |
107 | #define CPUREV_ICWAY 0x00000f00 /* number of instruction cache ways */ | |
108 | #define CPUREV_ICWAY_S 8 | |
109 | #define CPUREV_ICSIZE 0x0000f000 /* instruction cache way size */ | |
110 | #define CPUREV_ICSIZE_S 12 | |
111 | #define CPUREV_DCWAY 0x000f0000 /* number of data cache ways */ | |
112 | #define CPUREV_DCWAY_S 16 | |
113 | #define CPUREV_DCSIZE 0x00f00000 /* data cache way size */ | |
114 | #define CPUREV_DCSIZE_S 20 | |
115 | #define CPUREV_FPUTYPE 0x0f000000 /* FPU core type */ | |
116 | #define CPUREV_FPUTYPE_NONE 0x00000000 /* - no FPU core implemented */ | |
117 | #define CPUREV_OCDCTG 0xf0000000 /* on-chip debug function category */ | |
118 | ||
119 | #define DCR __SYSREG(0xc0000030, u16) /* Debug control register */ | |
120 | ||
121 | /* interrupt/exception control registers */ | |
122 | #define IVAR0 __SYSREG(0xc0000000, u16) /* interrupt vector 0 */ | |
123 | #define IVAR1 __SYSREG(0xc0000004, u16) /* interrupt vector 1 */ | |
124 | #define IVAR2 __SYSREG(0xc0000008, u16) /* interrupt vector 2 */ | |
125 | #define IVAR3 __SYSREG(0xc000000c, u16) /* interrupt vector 3 */ | |
126 | #define IVAR4 __SYSREG(0xc0000010, u16) /* interrupt vector 4 */ | |
127 | #define IVAR5 __SYSREG(0xc0000014, u16) /* interrupt vector 5 */ | |
128 | #define IVAR6 __SYSREG(0xc0000018, u16) /* interrupt vector 6 */ | |
129 | ||
130 | #define TBR __SYSREG(0xc0000024, u32) /* Trap table base */ | |
131 | #define TBR_TB 0xff000000 /* table base address bits 31-24 */ | |
132 | #define TBR_INT_CODE 0x00ffffff /* interrupt code */ | |
133 | ||
134 | #define DEAR __SYSREG(0xc0000038, u32) /* Data access exception address */ | |
135 | ||
136 | #define sISR __SYSREG(0xc0000044, u32) /* Supervisor interrupt status */ | |
137 | #define sISR_IRQICE 0x00000001 /* ICE interrupt */ | |
138 | #define sISR_ISTEP 0x00000002 /* single step interrupt */ | |
139 | #define sISR_MISSA 0x00000004 /* memory access address misalignment fault */ | |
140 | #define sISR_UNIMP 0x00000008 /* unimplemented instruction execution fault */ | |
141 | #define sISR_PIEXE 0x00000010 /* program interrupt */ | |
142 | #define sISR_MEMERR 0x00000020 /* illegal memory access fault */ | |
143 | #define sISR_IBREAK 0x00000040 /* instraction break interrupt */ | |
144 | #define sISR_DBSRL 0x00000080 /* debug serial interrupt */ | |
145 | #define sISR_PERIDB 0x00000100 /* peripheral debug interrupt */ | |
146 | #define sISR_EXUNIMP 0x00000200 /* unimplemented ex-instruction execution fault */ | |
147 | #define sISR_OBREAK 0x00000400 /* operand break interrupt */ | |
148 | #define sISR_PRIV 0x00000800 /* privileged instruction execution fault */ | |
149 | #define sISR_BUSERR 0x00001000 /* bus error fault */ | |
150 | #define sISR_DBLFT 0x00002000 /* double fault */ | |
151 | #define sISR_DBG 0x00008000 /* debug reserved interrupt */ | |
152 | #define sISR_ITMISS 0x00010000 /* instruction TLB miss */ | |
153 | #define sISR_DTMISS 0x00020000 /* data TLB miss */ | |
154 | #define sISR_ITEX 0x00040000 /* instruction TLB access exception */ | |
155 | #define sISR_DTEX 0x00080000 /* data TLB access exception */ | |
156 | #define sISR_ILGIA 0x00100000 /* illegal instruction access exception */ | |
157 | #define sISR_ILGDA 0x00200000 /* illegal data access exception */ | |
158 | #define sISR_IOIA 0x00400000 /* internal I/O space instruction access excep */ | |
159 | #define sISR_PRIVA 0x00800000 /* privileged space instruction access excep */ | |
160 | #define sISR_PRIDA 0x01000000 /* privileged space data access excep */ | |
161 | #define sISR_DISA 0x02000000 /* data space instruction access excep */ | |
162 | #define sISR_SYSC 0x04000000 /* system call instruction excep */ | |
163 | #define sISR_FPUD 0x08000000 /* FPU disabled excep */ | |
164 | #define sISR_FPUUI 0x10000000 /* FPU unimplemented instruction excep */ | |
165 | #define sISR_FPUOP 0x20000000 /* FPU operation excep */ | |
166 | #define sISR_NE 0x80000000 /* multiple synchronous exceptions excep */ | |
167 | ||
168 | /* cache control registers */ | |
169 | #define CHCTR __SYSREG(0xc0000070, u16) /* cache control */ | |
170 | #define CHCTR_ICEN 0x0001 /* instruction cache enable */ | |
171 | #define CHCTR_DCEN 0x0002 /* data cache enable */ | |
172 | #define CHCTR_ICBUSY 0x0004 /* instruction cache busy */ | |
173 | #define CHCTR_DCBUSY 0x0008 /* data cache busy */ | |
174 | #define CHCTR_ICINV 0x0010 /* instruction cache invalidate */ | |
175 | #define CHCTR_DCINV 0x0020 /* data cache invalidate */ | |
176 | #define CHCTR_DCWTMD 0x0040 /* data cache writing mode */ | |
177 | #define CHCTR_DCWTMD_WRBACK 0x0000 /* - write back mode */ | |
178 | #define CHCTR_DCWTMD_WRTHROUGH 0x0040 /* - write through mode */ | |
179 | #define CHCTR_DCALMD 0x0080 /* data cache allocation mode */ | |
180 | #define CHCTR_ICWMD 0x0f00 /* instruction cache way mode */ | |
181 | #define CHCTR_DCWMD 0xf000 /* data cache way mode */ | |
182 | ||
183 | /* MMU control registers */ | |
184 | #define MMUCTR __SYSREG(0xc0000090, u32) /* MMU control register */ | |
185 | #define MMUCTR_IRP 0x0000003f /* instruction TLB replace pointer */ | |
186 | #define MMUCTR_ITE 0x00000040 /* instruction TLB enable */ | |
187 | #define MMUCTR_IIV 0x00000080 /* instruction TLB invalidate */ | |
188 | #define MMUCTR_ITL 0x00000700 /* instruction TLB lock pointer */ | |
189 | #define MMUCTR_ITL_NOLOCK 0x00000000 /* - no lock */ | |
190 | #define MMUCTR_ITL_LOCK0 0x00000100 /* - entry 0 locked */ | |
191 | #define MMUCTR_ITL_LOCK0_1 0x00000200 /* - entry 0-1 locked */ | |
192 | #define MMUCTR_ITL_LOCK0_3 0x00000300 /* - entry 0-3 locked */ | |
193 | #define MMUCTR_ITL_LOCK0_7 0x00000400 /* - entry 0-7 locked */ | |
194 | #define MMUCTR_ITL_LOCK0_15 0x00000500 /* - entry 0-15 locked */ | |
195 | #define MMUCTR_CE 0x00008000 /* cacheable bit enable */ | |
196 | #define MMUCTR_DRP 0x003f0000 /* data TLB replace pointer */ | |
197 | #define MMUCTR_DTE 0x00400000 /* data TLB enable */ | |
198 | #define MMUCTR_DIV 0x00800000 /* data TLB invalidate */ | |
199 | #define MMUCTR_DTL 0x07000000 /* data TLB lock pointer */ | |
200 | #define MMUCTR_DTL_NOLOCK 0x00000000 /* - no lock */ | |
201 | #define MMUCTR_DTL_LOCK0 0x01000000 /* - entry 0 locked */ | |
202 | #define MMUCTR_DTL_LOCK0_1 0x02000000 /* - entry 0-1 locked */ | |
203 | #define MMUCTR_DTL_LOCK0_3 0x03000000 /* - entry 0-3 locked */ | |
204 | #define MMUCTR_DTL_LOCK0_7 0x04000000 /* - entry 0-7 locked */ | |
205 | #define MMUCTR_DTL_LOCK0_15 0x05000000 /* - entry 0-15 locked */ | |
206 | ||
207 | #define PIDR __SYSREG(0xc0000094, u16) /* PID register */ | |
208 | #define PIDR_PID 0x00ff /* process identifier */ | |
209 | ||
210 | #define PTBR __SYSREG(0xc0000098, unsigned long) /* Page table base register */ | |
211 | ||
212 | #define IPTEL __SYSREG(0xc00000a0, u32) /* instruction TLB entry */ | |
213 | #define DPTEL __SYSREG(0xc00000b0, u32) /* data TLB entry */ | |
214 | #define xPTEL_V 0x00000001 /* TLB entry valid */ | |
215 | #define xPTEL_UNUSED1 0x00000002 /* unused bit */ | |
216 | #define xPTEL_UNUSED2 0x00000004 /* unused bit */ | |
217 | #define xPTEL_C 0x00000008 /* cached if set */ | |
218 | #define xPTEL_PV 0x00000010 /* page valid */ | |
219 | #define xPTEL_D 0x00000020 /* dirty */ | |
220 | #define xPTEL_PR 0x000001c0 /* page protection */ | |
221 | #define xPTEL_PR_ROK 0x00000000 /* - R/O kernel */ | |
222 | #define xPTEL_PR_RWK 0x00000100 /* - R/W kernel */ | |
223 | #define xPTEL_PR_ROK_ROU 0x00000080 /* - R/O kernel and R/O user */ | |
224 | #define xPTEL_PR_RWK_ROU 0x00000180 /* - R/W kernel and R/O user */ | |
225 | #define xPTEL_PR_RWK_RWU 0x000001c0 /* - R/W kernel and R/W user */ | |
226 | #define xPTEL_G 0x00000200 /* global (use PID if 0) */ | |
227 | #define xPTEL_PS 0x00000c00 /* page size */ | |
228 | #define xPTEL_PS_4Kb 0x00000000 /* - 4Kb page */ | |
229 | #define xPTEL_PS_128Kb 0x00000400 /* - 128Kb page */ | |
230 | #define xPTEL_PS_1Kb 0x00000800 /* - 1Kb page */ | |
231 | #define xPTEL_PS_4Mb 0x00000c00 /* - 4Mb page */ | |
232 | #define xPTEL_PPN 0xfffff006 /* physical page number */ | |
233 | ||
234 | #define xPTEL_V_BIT 0 /* bit numbers corresponding to above masks */ | |
235 | #define xPTEL_UNUSED1_BIT 1 | |
236 | #define xPTEL_UNUSED2_BIT 2 | |
237 | #define xPTEL_C_BIT 3 | |
238 | #define xPTEL_PV_BIT 4 | |
239 | #define xPTEL_D_BIT 5 | |
240 | #define xPTEL_G_BIT 9 | |
241 | ||
242 | #define IPTEU __SYSREG(0xc00000a4, u32) /* instruction TLB virtual addr */ | |
243 | #define DPTEU __SYSREG(0xc00000b4, u32) /* data TLB virtual addr */ | |
244 | #define xPTEU_VPN 0xfffffc00 /* virtual page number */ | |
245 | #define xPTEU_PID 0x000000ff /* process identifier to which applicable */ | |
246 | ||
247 | #define IPTEL2 __SYSREG(0xc00000a8, u32) /* instruction TLB entry */ | |
248 | #define DPTEL2 __SYSREG(0xc00000b8, u32) /* data TLB entry */ | |
249 | #define xPTEL2_V 0x00000001 /* TLB entry valid */ | |
250 | #define xPTEL2_C 0x00000002 /* cacheable */ | |
251 | #define xPTEL2_PV 0x00000004 /* page valid */ | |
252 | #define xPTEL2_D 0x00000008 /* dirty */ | |
253 | #define xPTEL2_PR 0x00000070 /* page protection */ | |
254 | #define xPTEL2_PR_ROK 0x00000000 /* - R/O kernel */ | |
255 | #define xPTEL2_PR_RWK 0x00000040 /* - R/W kernel */ | |
256 | #define xPTEL2_PR_ROK_ROU 0x00000020 /* - R/O kernel and R/O user */ | |
257 | #define xPTEL2_PR_RWK_ROU 0x00000060 /* - R/W kernel and R/O user */ | |
258 | #define xPTEL2_PR_RWK_RWU 0x00000070 /* - R/W kernel and R/W user */ | |
259 | #define xPTEL2_G 0x00000080 /* global (use PID if 0) */ | |
260 | #define xPTEL2_PS 0x00000300 /* page size */ | |
261 | #define xPTEL2_PS_4Kb 0x00000000 /* - 4Kb page */ | |
262 | #define xPTEL2_PS_128Kb 0x00000100 /* - 128Kb page */ | |
263 | #define xPTEL2_PS_1Kb 0x00000200 /* - 1Kb page */ | |
264 | #define xPTEL2_PS_4Mb 0x00000300 /* - 4Mb page */ | |
265 | #define xPTEL2_PPN 0xfffffc00 /* physical page number */ | |
266 | ||
267 | #define MMUFCR __SYSREGC(0xc000009c, u32) /* MMU exception cause */ | |
268 | #define MMUFCR_IFC __SYSREGC(0xc000009c, u16) /* MMU instruction excep cause */ | |
269 | #define MMUFCR_DFC __SYSREGC(0xc000009e, u16) /* MMU data exception cause */ | |
270 | #define MMUFCR_xFC_TLBMISS 0x0001 /* TLB miss flag */ | |
271 | #define MMUFCR_xFC_INITWR 0x0002 /* initial write excep flag */ | |
272 | #define MMUFCR_xFC_PGINVAL 0x0004 /* page invalid excep flag */ | |
273 | #define MMUFCR_xFC_PROTVIOL 0x0008 /* protection violation excep flag */ | |
274 | #define MMUFCR_xFC_ACCESS 0x0010 /* access level flag */ | |
275 | #define MMUFCR_xFC_ACCESS_USR 0x0000 /* - user mode */ | |
276 | #define MMUFCR_xFC_ACCESS_SR 0x0010 /* - supervisor mode */ | |
277 | #define MMUFCR_xFC_TYPE 0x0020 /* access type flag */ | |
278 | #define MMUFCR_xFC_TYPE_READ 0x0000 /* - read */ | |
279 | #define MMUFCR_xFC_TYPE_WRITE 0x0020 /* - write */ | |
280 | #define MMUFCR_xFC_PR 0x01c0 /* page protection flag */ | |
281 | #define MMUFCR_xFC_PR_ROK 0x0000 /* - R/O kernel */ | |
282 | #define MMUFCR_xFC_PR_RWK 0x0100 /* - R/W kernel */ | |
283 | #define MMUFCR_xFC_PR_ROK_ROU 0x0080 /* - R/O kernel and R/O user */ | |
284 | #define MMUFCR_xFC_PR_RWK_ROU 0x0180 /* - R/W kernel and R/O user */ | |
285 | #define MMUFCR_xFC_PR_RWK_RWU 0x01c0 /* - R/W kernel and R/W user */ | |
286 | #define MMUFCR_xFC_ILLADDR 0x0200 /* illegal address excep flag */ | |
287 | ||
288 | #endif /* __KERNEL__ */ | |
289 | ||
290 | #endif /* _ASM_CPU_REGS_H */ |