52 lines
914 B
C
52 lines
914 B
C
#include "kernel/lib.h"
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#include "kernel/riscv.h"
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#include "kernel/kalloc.h"
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#include "kernel/vm.h"
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#include "kernel/cpu.h"
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Cpu cpus[MAX_CPU];
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extern uint32_t _bss_start;
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extern uint32_t _bss_end;
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extern uint32_t _ram_end;
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void kstrap()
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{
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panic("kstrap");
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}
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void kstart()
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{
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kalloc_init();
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kvm_init();
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panic("kstart: end");
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}
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void kinit()
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{
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// @Todo Initialize CPUs
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Cpu null_cpu = {0};
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cpus[0] = null_cpu;
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// Clear the BSS section
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for (uint32_t* ptr = &_bss_start; ptr < &_bss_end; ++ptr)
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{
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*ptr = 0U;
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}
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w_mideleg(0xFFFF);
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w_medeleg(0xFFFF);
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w_sstatus(SSTATUS_SPIE | SSTATUS_SPP_S);
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w_sie(SIE_SEIE);
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w_sepc(&kstart);
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w_stvec(&kstrap);
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w_pmpcfg0(PMPCFG_RW | PMPCFG_X | PMPCFG_TOR);
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w_pmpaddr0(((uint32_t)&_ram_end) >> PMPADDR_SHIFT);
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__asm__ volatile("sret");
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}
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