Mercurial > hg > Members > mitsuki > xv6_rpi2_port

comparison source/main.c @ 0:ed10291ff195

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author mir3636
date Sun, 06 Jan 2019 19:27:03 +0900
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-1:000000000000 0:ed10291ff195
1 /*****************************************************************
2 * main.c
3 * by Zhiyi Huang, hzy@cs.otago.ac.nz
4 * University of Otago
5 *
6 ********************************************************************/
7
8
9 #include "types.h"
10 #include "defs.h"
11 #include "param.h"
12 #include "memlayout.h"
13 #include "mmu.h"
14 #include "proc.h"
15 #include "arm.h"
16 #include "mailbox.h"
17
18 extern char end[]; // first address after kernel loaded from ELF file
19 extern pde_t *kpgdir;
20 extern volatile uint *mailbuffer;
21 extern unsigned int pm_size;
22
23 void OkLoop()
24 {
25 setgpiofunc(18, 1); // gpio 18 for Ok Led, set as an output
26 while(1){
27 setgpioval(18, 0);
28 delay(2000000);
29 setgpioval(18, 1);
30 delay(2000000);
31 }
32 }
33
34 void NotOkLoop()
35 {
36 setgpiofunc(18, 1); // gpio 18 for Ok Led, set as an output
37 while(1){
38 setgpioval(18, 0);
39 delay(500000);
40 setgpioval(18, 1);
41 delay(500000);
42 }
43 }
44
45 unsigned int getpmsize()
46 {
47 create_request(mailbuffer, MPI_TAG_GET_ARM_MEMORY, 8, 0, 0);
48 writemailbox((uint *)mailbuffer, 8);
49 readmailbox(8);
50 if(mailbuffer[1] != 0x80000000) cprintf("Error readmailbox: %x\n", MPI_TAG_GET_ARM_MEMORY);
51 return mailbuffer[MB_HEADER_LENGTH + TAG_HEADER_LENGTH+1];
52 }
53
54 void machinit(void)
55 {
56 memset(cpus, 0, sizeof(struct cpu)*NCPU);
57 }
58
59
60 void enableirqminiuart(void);
61
62 uint mb_data[10];
63
64 int cmain()
65 {
66 mmuinit0();
67 machinit();
68
69 #if defined (RPI1) || defined (RPI2)
70 uartinit();
71 #elif defined (FVP)
72 uartinit_fvp();
73 #endif
74
75 dsb_barrier();
76
77 consoleinit();
78 cprintf("\nHello World from xv6\n");
79
80 kinit1(end, P2V((8*1024*1024)+PHYSTART));
81 // collect some free space (8 MB) for imminent use
82 // the physical space below 0x8000 is reserved for PGDIR and kernel stack
83 kpgdir=p2v(K_PDX_BASE);
84
85 mailboxinit();
86
87 pm_size = getpmsize();
88 cprintf("ARM memory is %x\n", pm_size);
89
90 mmuinit1();
91 gpuinit();
92 pinit();
93 tvinit();
94 cprintf("it is ok after tvinit\n");
95 binit();
96 cprintf("it is ok after binit\n");
97 fileinit();
98 cprintf("it is ok after fileinit\n");
99 iinit();
100 cprintf("it is ok after iinit\n");
101 ideinit();
102 cprintf("it is ok after ideinit\n");
103 kinit2(P2V((8*1024*1024)+PHYSTART), P2V(pm_size));
104 cprintf("it is ok after kinit2\n");
105 userinit();
106 cprintf("it is ok after userinit\n");
107 timer3init();
108 cprintf("it is ok after timer3init\n");
109 scheduler();
110 NotOkLoop();
111 return 0;
112 }