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
6 * Copyright (C) 2005 Ilya A. Volynets-Evenbakh
7 * Copyright (C) 2005, 07 Ralf Baechle (ralf@linux-mips.org)
9 #ifndef __ASM_MACH_IP32_CPU_FEATURE_OVERRIDES_H
10 #define __ASM_MACH_IP32_CPU_FEATURE_OVERRIDES_H
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.
20 #if (defined(CONFIG_CPU_R5000) || defined(CONFIG_CPU_NEVADA)) && defined(CONFIG_64BIT)
21 #define cpu_has_llsc 0
23 #define cpu_has_llsc 1
26 /* Settings which are common for all ip32 CPUs */
28 #define cpu_has_4kex 1
30 #define cpu_has_32fpr 1
31 #define cpu_has_counter 1
32 #define cpu_has_mips16 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
40 #define cpu_has_4k_cache 1
41 #define cpu_has_mipsmt 0
42 #define cpu_has_userlocal 0
45 #define cpu_has_mips32r1 0
46 #define cpu_has_mips32r2 0
47 #define cpu_has_mips64r1 0
48 #define cpu_has_mips64r2 0
50 #endif /* __ASM_MACH_IP32_CPU_FEATURE_OVERRIDES_H */