#include "types.h" #include "param.h" #include "memlayout.h" #include "riscv.h" #include "defs.h" volatile static int started = 0; // start() jumps here in supervisor mode on all CPUs. void main() { if(cpuid() == 0){ consoleinit(); printfinit(); printf("hart %d starting\n", cpuid()); kinit(); // physical page allocator kvminit(); // create kernel page table kvminithart(); // turn on paging procinit(); // process table trapinit(); // trap vectors trapinithart(); // install kernel trap vector plicinit(); // set up interrupt controller plicinithart(); // ask PLIC for device interrupts binit(); // buffer cache fileinit(); // file table virtio_disk_init(); // emulated hard disk userinit(); // first user process started = 1; } else { while(started == 0) ; printf("hart %d starting\n", cpuid()); kvminithart(); // turn on paging trapinithart(); // install kernel trap vector plicinithart(); // ask PLIC for device interrupts } scheduler(); }