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1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 2003, 2004 Ralf Baechle
4194318c 7 * Copyright (C) 2004 Maciej W. Rozycki
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8 */
9#ifndef __ASM_CPU_FEATURES_H
10#define __ASM_CPU_FEATURES_H
11
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12#include <asm/cpu.h>
13#include <asm/cpu-info.h>
14#include <cpu-feature-overrides.h>
15
10cc3529 16#ifndef current_cpu_type
70342287 17#define current_cpu_type() current_cpu_data.cputype
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18#endif
19
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20/*
21 * SMP assumption: Options of CPU 0 are a superset of all processors.
22 * This is true for all known MIPS systems.
23 */
24#ifndef cpu_has_tlb
25#define cpu_has_tlb (cpu_data[0].options & MIPS_CPU_TLB)
26#endif
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27
28/*
29 * For the moment we don't consider R6000 and R8000 so we can assume that
30 * anything that doesn't support R4000-style exceptions and interrupts is
31 * R3000-like. Users should still treat these two macro definitions as
32 * opaque.
33 */
34#ifndef cpu_has_3kex
35#define cpu_has_3kex (!cpu_has_4kex)
36#endif
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37#ifndef cpu_has_4kex
38#define cpu_has_4kex (cpu_data[0].options & MIPS_CPU_4KEX)
39#endif
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40#ifndef cpu_has_3k_cache
41#define cpu_has_3k_cache (cpu_data[0].options & MIPS_CPU_3K_CACHE)
42#endif
43#define cpu_has_6k_cache 0
44#define cpu_has_8k_cache 0
45#ifndef cpu_has_4k_cache
46#define cpu_has_4k_cache (cpu_data[0].options & MIPS_CPU_4K_CACHE)
47#endif
48#ifndef cpu_has_tx39_cache
49#define cpu_has_tx39_cache (cpu_data[0].options & MIPS_CPU_TX39_CACHE)
50#endif
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51#ifndef cpu_has_octeon_cache
52#define cpu_has_octeon_cache 0
53#endif
1da177e4 54#ifndef cpu_has_fpu
f088fc84 55#define cpu_has_fpu (current_cpu_data.options & MIPS_CPU_FPU)
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56#define raw_cpu_has_fpu (raw_current_cpu_data.options & MIPS_CPU_FPU)
57#else
58#define raw_cpu_has_fpu cpu_has_fpu
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59#endif
60#ifndef cpu_has_32fpr
61#define cpu_has_32fpr (cpu_data[0].options & MIPS_CPU_32FPR)
62#endif
63#ifndef cpu_has_counter
64#define cpu_has_counter (cpu_data[0].options & MIPS_CPU_COUNTER)
65#endif
66#ifndef cpu_has_watch
67#define cpu_has_watch (cpu_data[0].options & MIPS_CPU_WATCH)
68#endif
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69#ifndef cpu_has_divec
70#define cpu_has_divec (cpu_data[0].options & MIPS_CPU_DIVEC)
71#endif
72#ifndef cpu_has_vce
73#define cpu_has_vce (cpu_data[0].options & MIPS_CPU_VCE)
74#endif
75#ifndef cpu_has_cache_cdex_p
76#define cpu_has_cache_cdex_p (cpu_data[0].options & MIPS_CPU_CACHE_CDEX_P)
77#endif
78#ifndef cpu_has_cache_cdex_s
79#define cpu_has_cache_cdex_s (cpu_data[0].options & MIPS_CPU_CACHE_CDEX_S)
80#endif
81#ifndef cpu_has_prefetch
82#define cpu_has_prefetch (cpu_data[0].options & MIPS_CPU_PREFETCH)
83#endif
84#ifndef cpu_has_mcheck
85#define cpu_has_mcheck (cpu_data[0].options & MIPS_CPU_MCHECK)
86#endif
87#ifndef cpu_has_ejtag
88#define cpu_has_ejtag (cpu_data[0].options & MIPS_CPU_EJTAG)
89#endif
90#ifndef cpu_has_llsc
91#define cpu_has_llsc (cpu_data[0].options & MIPS_CPU_LLSC)
92#endif
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93#ifndef kernel_uses_llsc
94#define kernel_uses_llsc cpu_has_llsc
95#endif
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96#ifndef cpu_has_mips16
97#define cpu_has_mips16 (cpu_data[0].ases & MIPS_ASE_MIPS16)
98#endif
99#ifndef cpu_has_mdmx
70342287 100#define cpu_has_mdmx (cpu_data[0].ases & MIPS_ASE_MDMX)
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101#endif
102#ifndef cpu_has_mips3d
70342287 103#define cpu_has_mips3d (cpu_data[0].ases & MIPS_ASE_MIPS3D)
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104#endif
105#ifndef cpu_has_smartmips
106#define cpu_has_smartmips (cpu_data[0].ases & MIPS_ASE_SMARTMIPS)
107#endif
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108#ifndef cpu_has_rixi
109#define cpu_has_rixi (cpu_data[0].options & MIPS_CPU_RIXI)
110#endif
f8fa4811 111#ifndef cpu_has_mmips
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112# ifdef CONFIG_SYS_SUPPORTS_MICROMIPS
113# define cpu_has_mmips (cpu_data[0].options & MIPS_CPU_MICROMIPS)
114# else
115# define cpu_has_mmips 0
116# endif
f8fa4811 117#endif
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118#ifndef cpu_has_vtag_icache
119#define cpu_has_vtag_icache (cpu_data[0].icache.flags & MIPS_CACHE_VTAG)
120#endif
121#ifndef cpu_has_dc_aliases
122#define cpu_has_dc_aliases (cpu_data[0].dcache.flags & MIPS_CACHE_ALIASES)
123#endif
124#ifndef cpu_has_ic_fills_f_dc
125#define cpu_has_ic_fills_f_dc (cpu_data[0].icache.flags & MIPS_CACHE_IC_F_DC)
126#endif
de62893b 127#ifndef cpu_has_pindexed_dcache
70342287 128#define cpu_has_pindexed_dcache (cpu_data[0].dcache.flags & MIPS_CACHE_PINDEX)
de62893b 129#endif
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130#ifndef cpu_has_local_ebase
131#define cpu_has_local_ebase 1
132#endif
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133
134/*
70342287 135 * I-Cache snoops remote store. This only matters on SMP. Some multiprocessors
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136 * such as the R10000 have I-Caches that snoop local stores; the embedded ones
137 * don't. For maintaining I-cache coherency this means we need to flush the
138 * D-cache all the way back to whever the I-cache does refills from, so the
139 * I-cache has a chance to see the new data at all. Then we have to flush the
140 * I-cache also.
141 * Note we may have been rescheduled and may no longer be running on the CPU
142 * that did the store so we can't optimize this into only doing the flush on
143 * the local CPU.
144 */
145#ifndef cpu_icache_snoops_remote_store
146#ifdef CONFIG_SMP
147#define cpu_icache_snoops_remote_store (cpu_data[0].icache.flags & MIPS_IC_SNOOPS_REMOTE)
148#else
149#define cpu_icache_snoops_remote_store 1
150#endif
151#endif
152
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153#ifndef cpu_has_mips_2
154# define cpu_has_mips_2 (cpu_data[0].isa_level & MIPS_CPU_ISA_II)
155#endif
156#ifndef cpu_has_mips_3
157# define cpu_has_mips_3 (cpu_data[0].isa_level & MIPS_CPU_ISA_III)
158#endif
159#ifndef cpu_has_mips_4
160# define cpu_has_mips_4 (cpu_data[0].isa_level & MIPS_CPU_ISA_IV)
161#endif
162#ifndef cpu_has_mips_5
163# define cpu_has_mips_5 (cpu_data[0].isa_level & MIPS_CPU_ISA_V)
164#endif
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165# ifndef cpu_has_mips32r1
166# define cpu_has_mips32r1 (cpu_data[0].isa_level & MIPS_CPU_ISA_M32R1)
167# endif
168# ifndef cpu_has_mips32r2
169# define cpu_has_mips32r2 (cpu_data[0].isa_level & MIPS_CPU_ISA_M32R2)
170# endif
171# ifndef cpu_has_mips64r1
172# define cpu_has_mips64r1 (cpu_data[0].isa_level & MIPS_CPU_ISA_M64R1)
173# endif
174# ifndef cpu_has_mips64r2
175# define cpu_has_mips64r2 (cpu_data[0].isa_level & MIPS_CPU_ISA_M64R2)
176# endif
177
178/*
179 * Shortcuts ...
180 */
181#define cpu_has_mips32 (cpu_has_mips32r1 | cpu_has_mips32r2)
182#define cpu_has_mips64 (cpu_has_mips64r1 | cpu_has_mips64r2)
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183#define cpu_has_mips_r1 (cpu_has_mips32r1 | cpu_has_mips64r1)
184#define cpu_has_mips_r2 (cpu_has_mips32r2 | cpu_has_mips64r2)
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185#define cpu_has_mips_r (cpu_has_mips32r1 | cpu_has_mips32r2 | \
186 cpu_has_mips64r1 | cpu_has_mips64r2)
0401572a 187
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188#ifndef cpu_has_mips_r2_exec_hazard
189#define cpu_has_mips_r2_exec_hazard cpu_has_mips_r2
190#endif
191
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192/*
193 * MIPS32, MIPS64, VR5500, IDT32332, IDT32334 and maybe a few other
70342287 194 * pre-MIPS32/MIPS53 processors have CLO, CLZ. The IDT RC64574 is 64-bit and
417a5eb0 195 * has CLO and CLZ but not DCLO nor DCLZ. For 64-bit kernels
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196 * cpu_has_clo_clz also indicates the availability of DCLO and DCLZ.
197 */
198# ifndef cpu_has_clo_clz
199# define cpu_has_clo_clz cpu_has_mips_r
200# endif
201
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202#ifndef cpu_has_dsp
203#define cpu_has_dsp (cpu_data[0].ases & MIPS_ASE_DSP)
204#endif
205
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206#ifndef cpu_has_dsp2
207#define cpu_has_dsp2 (cpu_data[0].ases & MIPS_ASE_DSP2P)
208#endif
209
8f40611d 210#ifndef cpu_has_mipsmt
2e128ded 211#define cpu_has_mipsmt (cpu_data[0].ases & MIPS_ASE_MIPSMT)
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212#endif
213
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214#ifndef cpu_has_userlocal
215#define cpu_has_userlocal (cpu_data[0].options & MIPS_CPU_ULRI)
216#endif
217
875d43e7 218#ifdef CONFIG_32BIT
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219# ifndef cpu_has_nofpuex
220# define cpu_has_nofpuex (cpu_data[0].options & MIPS_CPU_NOFPUEX)
221# endif
222# ifndef cpu_has_64bits
223# define cpu_has_64bits (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT)
224# endif
225# ifndef cpu_has_64bit_zero_reg
70342287 226# define cpu_has_64bit_zero_reg (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT)
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227# endif
228# ifndef cpu_has_64bit_gp_regs
229# define cpu_has_64bit_gp_regs 0
230# endif
231# ifndef cpu_has_64bit_addresses
232# define cpu_has_64bit_addresses 0
233# endif
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234# ifndef cpu_vmbits
235# define cpu_vmbits 31
236# endif
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237#endif
238
875d43e7 239#ifdef CONFIG_64BIT
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240# ifndef cpu_has_nofpuex
241# define cpu_has_nofpuex 0
242# endif
243# ifndef cpu_has_64bits
244# define cpu_has_64bits 1
245# endif
246# ifndef cpu_has_64bit_zero_reg
247# define cpu_has_64bit_zero_reg 1
248# endif
249# ifndef cpu_has_64bit_gp_regs
250# define cpu_has_64bit_gp_regs 1
251# endif
252# ifndef cpu_has_64bit_addresses
253# define cpu_has_64bit_addresses 1
254# endif
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255# ifndef cpu_vmbits
256# define cpu_vmbits cpu_data[0].vmbits
257# define __NEED_VMBITS_PROBE
258# endif
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259#endif
260
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261#if defined(CONFIG_CPU_MIPSR2_IRQ_VI) && !defined(cpu_has_vint)
262# define cpu_has_vint (cpu_data[0].options & MIPS_CPU_VINT)
263#elif !defined(cpu_has_vint)
8f40611d 264# define cpu_has_vint 0
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265#endif
266
267#if defined(CONFIG_CPU_MIPSR2_IRQ_EI) && !defined(cpu_has_veic)
268# define cpu_has_veic (cpu_data[0].options & MIPS_CPU_VEIC)
269#elif !defined(cpu_has_veic)
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270# define cpu_has_veic 0
271#endif
272
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273#ifndef cpu_has_inclusive_pcaches
274#define cpu_has_inclusive_pcaches (cpu_data[0].options & MIPS_CPU_INCLUSIVE_CACHES)
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275#endif
276
277#ifndef cpu_dcache_line_size
54fd6441 278#define cpu_dcache_line_size() cpu_data[0].dcache.linesz
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279#endif
280#ifndef cpu_icache_line_size
54fd6441 281#define cpu_icache_line_size() cpu_data[0].icache.linesz
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282#endif
283#ifndef cpu_scache_line_size
54fd6441 284#define cpu_scache_line_size() cpu_data[0].scache.linesz
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285#endif
286
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287#ifndef cpu_hwrena_impl_bits
288#define cpu_hwrena_impl_bits 0
289#endif
290
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291#ifndef cpu_has_perf_cntr_intr_bit
292#define cpu_has_perf_cntr_intr_bit (cpu_data[0].options & MIPS_CPU_PCI)
293#endif
294
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295#ifndef cpu_has_vz
296#define cpu_has_vz (cpu_data[0].ases & MIPS_ASE_VZ)
297#endif
298
1da177e4 299#endif /* __ASM_CPU_FEATURES_H */