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51 lines
1.4 KiB
51 lines
1.4 KiB
/* |
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* This file is subject to the terms and conditions of the GNU General Public |
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* License. See the file "COPYING" in the main directory of this archive |
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* for more details. |
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* |
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* Copyright (C) 2005 Ilya A. Volynets-Evenbakh |
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* Copyright (C) 2005, 07 Ralf Baechle ([email protected]) |
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*/ |
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#ifndef __ASM_MACH_IP32_CPU_FEATURE_OVERRIDES_H |
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#define __ASM_MACH_IP32_CPU_FEATURE_OVERRIDES_H |
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/* |
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* R5000 has an interesting "restriction": ll(d)/sc(d) |
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* instructions to XKPHYS region simply do uncached bus |
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* requests. This breaks all the atomic bitops functions. |
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* so, for 64bit IP32 kernel we just don't use ll/sc. |
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* This does not affect luserland. |
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*/ |
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#if (defined(CONFIG_CPU_R5000) || defined(CONFIG_CPU_NEVADA)) && defined(CONFIG_64BIT) |
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#define cpu_has_llsc 0 |
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#else |
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#define cpu_has_llsc 1 |
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#endif |
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/* Settings which are common for all ip32 CPUs */ |
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#define cpu_has_tlb 1 |
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#define cpu_has_4kex 1 |
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#define cpu_has_32fpr 1 |
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#define cpu_has_counter 1 |
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#define cpu_has_mips16 0 |
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#define cpu_has_mips16e2 0 |
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#define cpu_has_vce 0 |
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#define cpu_has_cache_cdex_s 0 |
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#define cpu_has_mcheck 0 |
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#define cpu_has_ejtag 0 |
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#define cpu_has_vtag_icache 0 |
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#define cpu_has_ic_fills_f_dc 0 |
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#define cpu_has_dsp 0 |
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#define cpu_has_dsp2 0 |
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#define cpu_has_4k_cache 1 |
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#define cpu_has_mipsmt 0 |
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#define cpu_has_userlocal 0 |
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#define cpu_has_mips32r1 0 |
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#define cpu_has_mips32r2 0 |
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#define cpu_has_mips64r1 0 |
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#define cpu_has_mips64r2 0 |
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#endif /* __ASM_MACH_IP32_CPU_FEATURE_OVERRIDES_H */
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