mirror of
https://github.com/openhwgroup/cvw
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70 lines
3.7 KiB
C
70 lines
3.7 KiB
C
// See LICENSE for license details.
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#ifndef _ENV_PHYSICAL_SINGLE_CORE_TIMER_H
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#define _ENV_PHYSICAL_SINGLE_CORE_TIMER_H
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#include "../p/riscv_test.h"
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#define TIMER_INTERVAL 2
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#undef EXTRA_INIT_TIMER
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#define EXTRA_INIT_TIMER \
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li a0, MIP_MTIP; \
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csrs mie, a0; \
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csrr a0, mtime; \
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addi a0, a0, TIMER_INTERVAL; \
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csrw mtimecmp, a0; \
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#if SSTATUS_XS != 0x18000
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# error
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#endif
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#define XS_SHIFT 15
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#undef INTERRUPT_HANDLER
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#define INTERRUPT_HANDLER \
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slli t5, t5, 1; \
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srli t5, t5, 1; \
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add t5, t5, -IRQ_M_TIMER; \
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bnez t5, other_exception; /* other interrups shouldn't happen */\
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csrr t5, mtime; \
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addi t5, t5, TIMER_INTERVAL; \
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csrw mtimecmp, t5; \
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mret; \
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//-----------------------------------------------------------------------
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// Data Section Macro
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//-----------------------------------------------------------------------
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#undef EXTRA_DATA
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#define EXTRA_DATA \
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.align 3; \
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regspill: \
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.dword 0xdeadbeefcafebabe; \
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.dword 0xdeadbeefcafebabe; \
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.dword 0xdeadbeefcafebabe; \
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.dword 0xdeadbeefcafebabe; \
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.dword 0xdeadbeefcafebabe; \
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.dword 0xdeadbeefcafebabe; \
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.dword 0xdeadbeefcafebabe; \
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.dword 0xdeadbeefcafebabe; \
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.dword 0xdeadbeefcafebabe; \
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.dword 0xdeadbeefcafebabe; \
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.dword 0xdeadbeefcafebabe; \
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.dword 0xdeadbeefcafebabe; \
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.dword 0xdeadbeefcafebabe; \
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.dword 0xdeadbeefcafebabe; \
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.dword 0xdeadbeefcafebabe; \
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.dword 0xdeadbeefcafebabe; \
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.dword 0xdeadbeefcafebabe; \
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.dword 0xdeadbeefcafebabe; \
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.dword 0xdeadbeefcafebabe; \
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.dword 0xdeadbeefcafebabe; \
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.dword 0xdeadbeefcafebabe; \
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.dword 0xdeadbeefcafebabe; \
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.dword 0xdeadbeefcafebabe; \
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.dword 0xdeadbeefcafebabe; \
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evac: \
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.skip 32768; \
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#endif
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