foboot/sw/include/system.h

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#ifndef __SYSTEM_H
#define __SYSTEM_H
#ifdef __cplusplus
extern "C" {
#endif
void flush_cpu_icache(void);
void flush_cpu_dcache(void);
void flush_l2_cache(void);
#ifdef __or1k__
#include <spr-defs.h>
static inline unsigned long mfspr(unsigned long add)
{
unsigned long ret;
__asm__ __volatile__ ("l.mfspr %0,%1,0" : "=r" (ret) : "r" (add));
return ret;
}
static inline void mtspr(unsigned long add, unsigned long val)
{
__asm__ __volatile__ ("l.mtspr %0,%1,0" : : "r" (add), "r" (val));
}
#endif
#if defined(__vexriscv__) || defined(__minerva__)
#include <csr-defs.h>
#define csrr(reg) ({ unsigned long __tmp; \
asm volatile ("csrr %0, " #reg : "=r"(__tmp)); \
__tmp; })
#define csrw(reg, val) ({ \
if (__builtin_constant_p(val) && (unsigned long)(val) < 32) \
asm volatile ("csrw " #reg ", %0" :: "i"(val)); \
else \
asm volatile ("csrw " #reg ", %0" :: "r"(val)); })
#define csrs(reg, bit) ({ \
if (__builtin_constant_p(bit) && (unsigned long)(bit) < 32) \
asm volatile ("csrrs x0, " #reg ", %0" :: "i"(bit)); \
else \
asm volatile ("csrrs x0, " #reg ", %0" :: "r"(bit)); })
#define csrc(reg, bit) ({ \
if (__builtin_constant_p(bit) && (unsigned long)(bit) < 32) \
asm volatile ("csrrc x0, " #reg ", %0" :: "i"(bit)); \
else \
asm volatile ("csrrc x0, " #reg ", %0" :: "r"(bit)); })
#endif
#ifdef __cplusplus
}
#endif
#endif /* __SYSTEM_H */