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35 lines
991 B
35 lines
991 B
3 years ago
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//See LICENSE for license details.
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#include <gd32vf103.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <unistd.h>
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#include "riscv_encoding.h"
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#include "n200_func.h"
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extern uint32_t disable_mcycle_minstret();
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void _init()
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{
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SystemInit();
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//ECLIC init
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eclic_init(ECLIC_NUM_INTERRUPTS);
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eclic_mode_enable();
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//printf("After ECLIC mode enabled, the mtvec value is %x \n\n\r", read_csr(mtvec));
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// // It must be NOTED:
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// // * In the RISC-V arch, if user mode and PMP supported, then by default if PMP is not configured
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// // with valid entries, then user mode cannot access any memory, and cannot execute any instructions.
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// // * So if switch to user-mode and still want to continue, then you must configure PMP first
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//pmp_open_all_space();
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//switch_m2u_mode();
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/* Before enter into main, add the cycle/instret disable by default to save power,
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only use them when needed to measure the cycle/instret */
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disable_mcycle_minstret();
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}
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void _fini()
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{
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}
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