cpu-feature-overrides.h (1466B)
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 (ralf@linux-mips.org) 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_32fpr 1 30#define cpu_has_counter 1 31#define cpu_has_mips16 0 32#define cpu_has_mips16e2 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 */