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-rw-r--r--include/asm-arm/system.h43
1 files changed, 30 insertions, 13 deletions
diff --git a/include/asm-arm/system.h b/include/asm-arm/system.h
index f05fbe31576c..f60faccf01fa 100644
--- a/include/asm-arm/system.h
+++ b/include/asm-arm/system.h
@@ -139,19 +139,36 @@ static inline int cpu_is_xsc3(void)
139#define cpu_is_xscale() 1 139#define cpu_is_xscale() 1
140#endif 140#endif
141 141
142#define set_cr(x) \ 142static inline unsigned int get_cr(void)
143 __asm__ __volatile__( \ 143{
144 "mcr p15, 0, %0, c1, c0, 0 @ set CR" \ 144 unsigned int val;
145 : : "r" (x) : "cc") 145 asm("mrc p15, 0, %0, c1, c0, 0 @ get CR" : "=r" (val) : : "cc");
146 146 return val;
147#define get_cr() \ 147}
148 ({ \ 148
149 unsigned int __val; \ 149static inline void set_cr(unsigned int val)
150 __asm__ __volatile__( \ 150{
151 "mrc p15, 0, %0, c1, c0, 0 @ get CR" \ 151 asm volatile("mcr p15, 0, %0, c1, c0, 0 @ set CR"
152 : "=r" (__val) : : "cc"); \ 152 : : "r" (val) : "cc");
153 __val; \ 153}
154 }) 154
155#define CPACC_FULL(n) (3 << (n * 2))
156#define CPACC_SVC(n) (1 << (n * 2))
157#define CPACC_DISABLE(n) (0 << (n * 2))
158
159static inline unsigned int get_copro_access(void)
160{
161 unsigned int val;
162 asm("mrc p15, 0, %0, c1, c0, 2 @ get copro access"
163 : "=r" (val) : : "cc");
164 return val;
165}
166
167static inline void set_copro_access(unsigned int val)
168{
169 asm volatile("mcr p15, 0, %0, c1, c0, 2 @ set copro access"
170 : : "r" (val) : "cc");
171}
155 172
156extern unsigned long cr_no_alignment; /* defined in entry-armv.S */ 173extern unsigned long cr_no_alignment; /* defined in entry-armv.S */
157extern unsigned long cr_alignment; /* defined in entry-armv.S */ 174extern unsigned long cr_alignment; /* defined in entry-armv.S */