1 /* 2 * arch/arm/include/asm/glue.h 3 * 4 * Copyright (C) 1997-1999 Russell King 5 * Copyright (C) 2000-2002 Deep Blue Solutions Ltd. 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 * 11 * This file provides the glue to stick the processor-specific bits 12 * into the kernel in an efficient manner. The idea is to use branches 13 * when we're only targetting one class of TLB, or indirect calls 14 * when we're targetting multiple classes of TLBs. 15 */ 16 #ifdef __KERNEL__ 17 18 19 #ifdef __STDC__ 20 #define ____glue(name,fn) name##fn 21 #else 22 #define ____glue(name,fn) name/**/fn 23 #endif 24 #define __glue(name,fn) ____glue(name,fn) 25 26 27 28 /* 29 * Data Abort Model 30 * ================ 31 * 32 * We have the following to choose from: 33 * arm6 - ARM6 style 34 * arm7 - ARM7 style 35 * v4_early - ARMv4 without Thumb early abort handler 36 * v4t_late - ARMv4 with Thumb late abort handler 37 * v4t_early - ARMv4 with Thumb early abort handler 38 * v5tej_early - ARMv5 with Thumb and Java early abort handler 39 * xscale - ARMv5 with Thumb with Xscale extensions 40 * v6_early - ARMv6 generic early abort handler 41 * v7_early - ARMv7 generic early abort handler 42 */ 43 #undef CPU_DABORT_HANDLER 44 #undef MULTI_DABORT 45 46 #if defined(CONFIG_CPU_ARM610) 47 # ifdef CPU_DABORT_HANDLER 48 # define MULTI_DABORT 1 49 # else 50 # define CPU_DABORT_HANDLER cpu_arm6_data_abort 51 # endif 52 #endif 53 54 #if defined(CONFIG_CPU_ARM710) 55 # ifdef CPU_DABORT_HANDLER 56 # define MULTI_DABORT 1 57 # else 58 # define CPU_DABORT_HANDLER cpu_arm7_data_abort 59 # endif 60 #endif 61 62 #ifdef CONFIG_CPU_ABRT_LV4T 63 # ifdef CPU_DABORT_HANDLER 64 # define MULTI_DABORT 1 65 # else 66 # define CPU_DABORT_HANDLER v4t_late_abort 67 # endif 68 #endif 69 70 #ifdef CONFIG_CPU_ABRT_EV4 71 # ifdef CPU_DABORT_HANDLER 72 # define MULTI_DABORT 1 73 # else 74 # define CPU_DABORT_HANDLER v4_early_abort 75 # endif 76 #endif 77 78 #ifdef CONFIG_CPU_ABRT_EV4T 79 # ifdef CPU_DABORT_HANDLER 80 # define MULTI_DABORT 1 81 # else 82 # define CPU_DABORT_HANDLER v4t_early_abort 83 # endif 84 #endif 85 86 #ifdef CONFIG_CPU_ABRT_EV5TJ 87 # ifdef CPU_DABORT_HANDLER 88 # define MULTI_DABORT 1 89 # else 90 # define CPU_DABORT_HANDLER v5tj_early_abort 91 # endif 92 #endif 93 94 #ifdef CONFIG_CPU_ABRT_EV5T 95 # ifdef CPU_DABORT_HANDLER 96 # define MULTI_DABORT 1 97 # else 98 # define CPU_DABORT_HANDLER v5t_early_abort 99 # endif 100 #endif 101 102 #ifdef CONFIG_CPU_ABRT_EV6 103 # ifdef CPU_DABORT_HANDLER 104 # define MULTI_DABORT 1 105 # else 106 # define CPU_DABORT_HANDLER v6_early_abort 107 # endif 108 #endif 109 110 #ifdef CONFIG_CPU_ABRT_EV7 111 # ifdef CPU_DABORT_HANDLER 112 # define MULTI_DABORT 1 113 # else 114 # define CPU_DABORT_HANDLER v7_early_abort 115 # endif 116 #endif 117 118 #ifndef CPU_DABORT_HANDLER 119 #error Unknown data abort handler type 120 #endif 121 122 /* 123 * Prefetch abort handler. If the CPU has an IFAR use that, otherwise 124 * use the address of the aborted instruction 125 */ 126 #undef CPU_PABORT_HANDLER 127 #undef MULTI_PABORT 128 129 #ifdef CONFIG_CPU_PABRT_IFAR 130 # ifdef CPU_PABORT_HANDLER 131 # define MULTI_PABORT 1 132 # else 133 # define CPU_PABORT_HANDLER(reg, insn) mrc p15, 0, reg, cr6, cr0, 2 134 # endif 135 #endif 136 137 #ifdef CONFIG_CPU_PABRT_NOIFAR 138 # ifdef CPU_PABORT_HANDLER 139 # define MULTI_PABORT 1 140 # else 141 # define CPU_PABORT_HANDLER(reg, insn) mov reg, insn 142 # endif 143 #endif 144 145 #ifndef CPU_PABORT_HANDLER 146 #error Unknown prefetch abort handler type 147 #endif 148 149 #endif 150