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cpu-feature-overrides.h
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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) 2005 Ilya A. Volynets-Evenbakh
7  * Copyright (C) 2005, 07 Ralf Baechle ([email protected])
8  */
9 #ifndef __ASM_MACH_IP32_CPU_FEATURE_OVERRIDES_H
10 #define __ASM_MACH_IP32_CPU_FEATURE_OVERRIDES_H
11 
12 
13 /*
14  * R5000 has an interesting "restriction": ll(d)/sc(d)
15  * instructions to XKPHYS region simply do uncached bus
16  * requests. This breaks all the atomic bitops functions.
17  * so, for 64bit IP32 kernel we just don't use ll/sc.
18  * This does not affect luserland.
19  */
20 #if (defined(CONFIG_CPU_R5000) || defined(CONFIG_CPU_NEVADA)) && defined(CONFIG_64BIT)
21 #define cpu_has_llsc 0
22 #else
23 #define cpu_has_llsc 1
24 #endif
25 
26 /* Settings which are common for all ip32 CPUs */
27 #define cpu_has_tlb 1
28 #define cpu_has_4kex 1
29 #define cpu_has_fpu 1
30 #define cpu_has_32fpr 1
31 #define cpu_has_counter 1
32 #define cpu_has_mips16 0
33 #define cpu_has_vce 0
34 #define cpu_has_cache_cdex_s 0
35 #define cpu_has_mcheck 0
36 #define cpu_has_ejtag 0
37 #define cpu_has_vtag_icache 0
38 #define cpu_has_ic_fills_f_dc 0
39 #define cpu_has_dsp 0
40 #define cpu_has_dsp2 0
41 #define cpu_has_4k_cache 1
42 #define cpu_has_mipsmt 0
43 #define cpu_has_userlocal 0
44 
45 
46 #define cpu_has_mips32r1 0
47 #define cpu_has_mips32r2 0
48 #define cpu_has_mips64r1 0
49 #define cpu_has_mips64r2 0
50 
51 #endif /* __ASM_MACH_IP32_CPU_FEATURE_OVERRIDES_H */