1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 #ifndef _PPC_BOOT_REG_H
3 #define _PPC_BOOT_REG_H
4 /*
5 * Copyright 2007 Davud Gibson, IBM Corporation.
6 */
7
8 static inline u32 mfpvr(void)
9 {
10 u32 pvr;
11 asm volatile ("mfpvr %0" : "=r"(pvr));
12 return pvr;
13 }
14
15 #define __stringify_1(x) #x
16 #define __stringify(x) __stringify_1(x)
17
18 #define mfspr(rn) ({unsigned long rval; \
19 asm volatile("mfspr %0," __stringify(rn) \
20 : "=r" (rval)); rval; })
21 #define mtspr(rn, v) asm volatile("mtspr " __stringify(rn) ",%0" : : "r" (v))
22
23 register void *__stack_pointer asm("r1");
24 #define get_sp() (__stack_pointer)
25
26 #endif /* _PPC_BOOT_REG_H */
27
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