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1 // BSP support routine
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2 #include "types.h"
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3 #include "defs.h"
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4 #include "param.h"
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5 #include "arm.h"
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6 #include "proc.h"
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7 #include "memlayout.h"
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8 #include "mmu.h"
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9
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360
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10 #include "kernel.h"
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11
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12 extern void* end;
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13
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14 struct cpu cpus[NCPU];
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15 struct cpu *cpu;
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16
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360
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17
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18 #define MB (1024*1024)
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19
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20 void kmain (void)
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21 {
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22 uint vectbl;
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23
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24 cpu = &cpus[0];
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25
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26 uart_init (P2V(UART0));
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27
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28 // interrrupt vector table is in the middle of first 1MB. We use the left
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29 // over for page tables
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30 vectbl = P2V_WO (VEC_TBL & PDE_MASK);
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31
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32 init_vmm ();
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33 kpt_freerange (align_up(&end, PT_SZ), vectbl);
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34 kpt_freerange (vectbl + PT_SZ, P2V_WO(INIT_KERNMAP));
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35 paging_init (INIT_KERNMAP, PHYSTOP);
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36
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37 kmem_init ();
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38 kmem_init2(P2V(INIT_KERNMAP), P2V(PHYSTOP));
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360
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39
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367
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40 kernel_context = calloc(sizeof(struct KernelContext), 1);
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41 initContext(&kernel_context->context);
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360
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42
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43 trap_init (); // vector table and stacks for models
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44 pic_init (P2V(VIC_BASE)); // interrupt controller
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45 uart_enable_rx (); // interrupt for uart
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46 consoleinit (); // console
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47 pinit (); // process (locks)
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48
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49 binit (); // buffer cache
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50 fileinit (); // file table
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51 iinit (); // inode cache
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52 ideinit (); // ide (memory block device)
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53 timer_init (HZ); // the timer (ticker)
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54
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55
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56 sti ();
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57
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58 userinit(); // first user process
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59 scheduler(); // start running processes
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60 }
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