2 * Copyright (c) 1991 The Regents of the University of California.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * from: @(#)specialreg.h 7.1 (Berkeley) 5/9/91
34 * $FreeBSD: src/sys/amd64/include/specialreg.h,v 1.28 2004/01/28 23:47:22 peter Exp $
35 * $DragonFly: src/sys/amd64/include/Attic/specialreg.h,v 1.1 2004/02/02 08:05:52 dillon Exp $
38 #ifndef _MACHINE_SPECIALREG_H_
39 #define _MACHINE_SPECIALREG_H_
42 * Bits in 386 special registers:
44 #define CR0_PE 0x00000001 /* Protected mode Enable */
45 #define CR0_MP 0x00000002 /* "Math" (fpu) Present */
46 #define CR0_EM 0x00000004 /* EMulate FPU instructions. (trap ESC only) */
47 #define CR0_TS 0x00000008 /* Task Switched (if MP, trap ESC and WAIT) */
48 #define CR0_PG 0x80000000 /* PaGing enable */
51 * Bits in 486 special registers:
53 #define CR0_NE 0x00000020 /* Numeric Error enable (EX16 vs IRQ13) */
54 #define CR0_WP 0x00010000 /* Write Protect (honor page protect in
56 #define CR0_AM 0x00040000 /* Alignment Mask (set to enable AC flag) */
57 #define CR0_NW 0x20000000 /* Not Write-through */
58 #define CR0_CD 0x40000000 /* Cache Disable */
61 * Bits in PPro special registers
63 #define CR4_VME 0x00000001 /* Virtual 8086 mode extensions */
64 #define CR4_PVI 0x00000002 /* Protected-mode virtual interrupts */
65 #define CR4_TSD 0x00000004 /* Time stamp disable */
66 #define CR4_DE 0x00000008 /* Debugging extensions */
67 #define CR4_PSE 0x00000010 /* Page size extensions */
68 #define CR4_PAE 0x00000020 /* Physical address extension */
69 #define CR4_MCE 0x00000040 /* Machine check enable */
70 #define CR4_PGE 0x00000080 /* Page global enable */
71 #define CR4_PCE 0x00000100 /* Performance monitoring counter enable */
72 #define CR4_FXSR 0x00000200 /* Fast FPU save/restore used by OS */
73 #define CR4_XMM 0x00000400 /* enable SIMD/MMX2 to use except 16 */
76 * Bits in AMD64 special registers. EFER is 64 bits wide.
78 #define EFER_SCE 0x000000001 /* System Call Extensions (R/W) */
79 #define EFER_LME 0x000000100 /* Long mode enable (R/W) */
80 #define EFER_LMA 0x000000400 /* Long mode active (R) */
81 #define EFER_NXE 0x000000800 /* PTE No-Execute bit enable (R/W) */
84 * CPUID instruction features register
86 #define CPUID_FPU 0x00000001
87 #define CPUID_VME 0x00000002
88 #define CPUID_DE 0x00000004
89 #define CPUID_PSE 0x00000008
90 #define CPUID_TSC 0x00000010
91 #define CPUID_MSR 0x00000020
92 #define CPUID_PAE 0x00000040
93 #define CPUID_MCE 0x00000080
94 #define CPUID_CX8 0x00000100
95 #define CPUID_APIC 0x00000200
96 #define CPUID_B10 0x00000400
97 #define CPUID_SEP 0x00000800
98 #define CPUID_MTRR 0x00001000
99 #define CPUID_PGE 0x00002000
100 #define CPUID_MCA 0x00004000
101 #define CPUID_CMOV 0x00008000
102 #define CPUID_PAT 0x00010000
103 #define CPUID_PSE36 0x00020000
104 #define CPUID_PSN 0x00040000
105 #define CPUID_CLFSH 0x00080000
106 #define CPUID_B20 0x00100000
107 #define CPUID_DS 0x00200000
108 #define CPUID_ACPI 0x00400000
109 #define CPUID_MMX 0x00800000
110 #define CPUID_FXSR 0x01000000
111 #define CPUID_SSE 0x02000000
112 #define CPUID_XMM 0x02000000
113 #define CPUID_SSE2 0x04000000
114 #define CPUID_SS 0x08000000
115 #define CPUID_HTT 0x10000000
116 #define CPUID_TM 0x20000000
117 #define CPUID_B30 0x40000000
118 #define CPUID_PBE 0x80000000
121 * CPUID instruction 1 ebx info
123 #define CPUID_BRAND_INDEX 0x000000ff
124 #define CPUID_CLFUSH_SIZE 0x0000ff00
125 #define CPUID_HTT_CORES 0x00ff0000
126 #define CPUID_LOCAL_APIC_ID 0xff000000
129 * Model-specific registers for the i386 family
131 #define MSR_P5_MC_ADDR 0x000
132 #define MSR_P5_MC_TYPE 0x001
133 #define MSR_TSC 0x010
134 #define MSR_P5_CESR 0x011
135 #define MSR_P5_CTR0 0x012
136 #define MSR_P5_CTR1 0x013
137 #define MSR_IA32_PLATFORM_ID 0x017
138 #define MSR_APICBASE 0x01b
139 #define MSR_EBL_CR_POWERON 0x02a
140 #define MSR_TEST_CTL 0x033
141 #define MSR_BIOS_UPDT_TRIG 0x079
142 #define MSR_BBL_CR_D0 0x088
143 #define MSR_BBL_CR_D1 0x089
144 #define MSR_BBL_CR_D2 0x08a
145 #define MSR_BIOS_SIGN 0x08b
146 #define MSR_PERFCTR0 0x0c1
147 #define MSR_PERFCTR1 0x0c2
148 #define MSR_MTRRcap 0x0fe
149 #define MSR_BBL_CR_ADDR 0x116
150 #define MSR_BBL_CR_DECC 0x118
151 #define MSR_BBL_CR_CTL 0x119
152 #define MSR_BBL_CR_TRIG 0x11a
153 #define MSR_BBL_CR_BUSY 0x11b
154 #define MSR_BBL_CR_CTL3 0x11e
155 #define MSR_SYSENTER_CS_MSR 0x174
156 #define MSR_SYSENTER_ESP_MSR 0x175
157 #define MSR_SYSENTER_EIP_MSR 0x176
158 #define MSR_MCG_CAP 0x179
159 #define MSR_MCG_STATUS 0x17a
160 #define MSR_MCG_CTL 0x17b
161 #define MSR_EVNTSEL0 0x186
162 #define MSR_EVNTSEL1 0x187
163 #define MSR_THERM_CONTROL 0x19a
164 #define MSR_THERM_INTERRUPT 0x19b
165 #define MSR_THERM_STATUS 0x19c
166 #define MSR_DEBUGCTLMSR 0x1d9
167 #define MSR_LASTBRANCHFROMIP 0x1db
168 #define MSR_LASTBRANCHTOIP 0x1dc
169 #define MSR_LASTINTFROMIP 0x1dd
170 #define MSR_LASTINTTOIP 0x1de
171 #define MSR_ROB_CR_BKUPTMPDR6 0x1e0
172 #define MSR_MTRRVarBase 0x200
173 #define MSR_MTRR64kBase 0x250
174 #define MSR_MTRR16kBase 0x258
175 #define MSR_MTRR4kBase 0x268
176 #define MSR_PAT 0x277
177 #define MSR_MTRRdefType 0x2ff
178 #define MSR_MC0_CTL 0x400
179 #define MSR_MC0_STATUS 0x401
180 #define MSR_MC0_ADDR 0x402
181 #define MSR_MC0_MISC 0x403
182 #define MSR_MC1_CTL 0x404
183 #define MSR_MC1_STATUS 0x405
184 #define MSR_MC1_ADDR 0x406
185 #define MSR_MC1_MISC 0x407
186 #define MSR_MC2_CTL 0x408
187 #define MSR_MC2_STATUS 0x409
188 #define MSR_MC2_ADDR 0x40a
189 #define MSR_MC2_MISC 0x40b
190 #define MSR_MC4_CTL 0x40c
191 #define MSR_MC4_STATUS 0x40d
192 #define MSR_MC4_ADDR 0x40e
193 #define MSR_MC4_MISC 0x40f
194 #define MSR_MC3_CTL 0x410
195 #define MSR_MC3_STATUS 0x411
196 #define MSR_MC3_ADDR 0x412
197 #define MSR_MC3_MISC 0x413
200 * Constants related to MSR's.
202 #define APICBASE_RESERVED 0x000006ff
203 #define APICBASE_BSP 0x00000100
204 #define APICBASE_ENABLED 0x00000800
205 #define APICBASE_ADDRESS 0xfffff000
208 * Constants related to MTRRs
210 #define MTRR_N64K 8 /* numbers of fixed-size entries */
214 /* Performance Control Register (5x86 only). */
216 #define PCR0_RSTK 0x01 /* Enables return stack */
217 #define PCR0_BTB 0x02 /* Enables branch target buffer */
218 #define PCR0_LOOP 0x04 /* Enables loop */
219 #define PCR0_AIS 0x08 /* Enables all instrcutions stalled to
221 #define PCR0_MLR 0x10 /* Enables reordering of misaligned loads */
222 #define PCR0_BTBRT 0x40 /* Enables BTB test register. */
223 #define PCR0_LSSER 0x80 /* Disable reorder */
225 /* Device Identification Registers */
230 * The following four 3-byte registers control the non-cacheable regions.
231 * These registers must be written as three separate bytes.
233 * NCRx+0: A31-A24 of starting address
234 * NCRx+1: A23-A16 of starting address
235 * NCRx+2: A15-A12 of starting address | NCR_SIZE_xx.
237 * The non-cacheable region's starting address must be aligned to the
238 * size indicated by the NCR_SIZE_xx field.
245 #define NCR_SIZE_0K 0
246 #define NCR_SIZE_4K 1
247 #define NCR_SIZE_8K 2
248 #define NCR_SIZE_16K 3
249 #define NCR_SIZE_32K 4
250 #define NCR_SIZE_64K 5
251 #define NCR_SIZE_128K 6
252 #define NCR_SIZE_256K 7
253 #define NCR_SIZE_512K 8
254 #define NCR_SIZE_1M 9
255 #define NCR_SIZE_2M 10
256 #define NCR_SIZE_4M 11
257 #define NCR_SIZE_8M 12
258 #define NCR_SIZE_16M 13
259 #define NCR_SIZE_32M 14
260 #define NCR_SIZE_4G 15
263 * The address region registers are used to specify the location and
264 * size for the eight address regions.
266 * ARRx + 0: A31-A24 of start address
267 * ARRx + 1: A23-A16 of start address
268 * ARRx + 2: A15-A12 of start address | ARR_SIZE_xx
279 #define ARR_SIZE_0K 0
280 #define ARR_SIZE_4K 1
281 #define ARR_SIZE_8K 2
282 #define ARR_SIZE_16K 3
283 #define ARR_SIZE_32K 4
284 #define ARR_SIZE_64K 5
285 #define ARR_SIZE_128K 6
286 #define ARR_SIZE_256K 7
287 #define ARR_SIZE_512K 8
288 #define ARR_SIZE_1M 9
289 #define ARR_SIZE_2M 10
290 #define ARR_SIZE_4M 11
291 #define ARR_SIZE_8M 12
292 #define ARR_SIZE_16M 13
293 #define ARR_SIZE_32M 14
294 #define ARR_SIZE_4G 15
297 * The region control registers specify the attributes associated with
298 * the ARRx addres regions.
309 #define RCR_RCD 0x01 /* Disables caching for ARRx (x = 0-6). */
310 #define RCR_RCE 0x01 /* Enables caching for ARR7. */
311 #define RCR_WWO 0x02 /* Weak write ordering. */
312 #define RCR_WL 0x04 /* Weak locking. */
313 #define RCR_WG 0x08 /* Write gathering. */
314 #define RCR_WT 0x10 /* Write-through. */
315 #define RCR_NLB 0x20 /* LBA# pin is not asserted. */
317 /* AMD Write Allocate Top-Of-Memory and Control Register */
318 #define AMD_WT_ALLOC_TME 0x40000 /* top-of-memory enable */
319 #define AMD_WT_ALLOC_PRE 0x20000 /* programmable range enable */
320 #define AMD_WT_ALLOC_FRE 0x10000 /* fixed (A0000-FFFFF) range enable */
323 #define MSR_EFER 0xc0000080 /* extended features */
324 #define MSR_STAR 0xc0000081 /* legacy mode SYSCALL target/cs/ss */
325 #define MSR_LSTAR 0xc0000082 /* long mode SYSCALL target rip */
326 #define MSR_CSTAR 0xc0000083 /* compat mode SYSCALL target rip */
327 #define MSR_SF_MASK 0xc0000084 /* syscall flags mask */
328 #define MSR_FSBASE 0xc0000100 /* base address of the %fs "segment" */
329 #define MSR_GSBASE 0xc0000101 /* base address of the %gs "segment" */
330 #define MSR_KGSBASE 0xc0000102 /* base address of the kernel %gs */
331 #define MSR_PERFEVSEL0 0xc0010000
332 #define MSR_PERFEVSEL1 0xc0010001
333 #define MSR_PERFEVSEL2 0xc0010002
334 #define MSR_PERFEVSEL3 0xc0010003
337 #define MSR_PERFCTR0 0xc0010004
338 #define MSR_PERFCTR1 0xc0010005
339 #define MSR_PERFCTR2 0xc0010006
340 #define MSR_PERFCTR3 0xc0010007
341 #define MSR_SYSCFG 0xc0010010
342 #define MSR_IORRBASE0 0xc0010016
343 #define MSR_IORRMASK0 0xc0010017
344 #define MSR_IORRBASE1 0xc0010018
345 #define MSR_IORRMASK1 0xc0010019
346 #define MSR_TOP_MEM 0xc001001a /* boundary for ram below 4G */
347 #define MSR_TOP_MEM2 0xc001001d /* boundary for ram above 4G */
349 #endif /* !_MACHINE_SPECIALREG_H_ */