34 lines
794 B
C
34 lines
794 B
C
#ifndef _UTILS_H_
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#define _UTILS_H_
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#define CPU_FREQ_HZ (12000000) // 12MHz
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#define CPU_FREQ_MHZ (12) // 12MHz
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#define read_csr(reg) ({ unsigned long __tmp; \
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asm volatile ("csrr %0, " #reg : "=r"(__tmp)); \
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__tmp; })
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#define write_csr(reg, val) ({ \
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if (__builtin_constant_p(val) && (unsigned long)(val) < 32) \
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asm volatile ("csrw " #reg ", %0" :: "i"(val)); \
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else \
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asm volatile ("csrw " #reg ", %0" :: "r"(val)); })
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#ifdef SIMULATION
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#define set_test_pass() asm("csrrwi x0, sstatus, 0x3")
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#define set_test_fail() asm("csrrwi x0, sstatus, 0x1")
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#endif
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uint64_t get_cycle_value();
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void busy_wait(uint32_t us);
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void global_irq_enable();
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void global_irq_disable();
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void mtime_irq_enable();
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void mtime_irq_disable();
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#endif
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