]> Joshua Wise's Git repositories - netwatch.git/blob - aseg-paging/smi.c
AB
[netwatch.git] / aseg-paging / smi.c
1 #include <io.h>
2 #include <smram.h>
3 #include <video_defines.h>
4 #include <minilib.h>
5 #include <smi.h>
6 #include <pci-bother.h>
7 #include "../net/net.h"
8 #include "vga-overlay.h"
9
10 #include "pagetable.h"
11
12 unsigned int counter = 0;
13 unsigned int lastctr = 0;
14 unsigned long pcisave = 0;
15 unsigned char vgasave = 0;
16
17 void set_cr0(unsigned int);
18
19 #define get_cr0() \
20     ({ \
21         register unsigned int _temp__; \
22         asm volatile("mov %%cr0, %0" : "=r" (_temp__)); \
23         _temp__; \
24     })
25
26
27 #define set_cr3(value) \
28     { \
29         register unsigned int _temp__ = (value); \
30         asm volatile("mov %0, %%cr3" : : "r" (_temp__)); \
31      }
32 #define CR0_PG  0x80000000
33
34
35 void smi_entry(void)
36 {
37         char statstr[512];
38         outb(0x80, 0x0B);
39         pcisave = inl(0xCF8);
40         vgasave = inb(0x3D4);
41         outb(0x80, 0x1B);
42 /*
43         pci_unbother_all();
44  */
45         counter++;
46         outb(0x80, 0x2B);
47         sprintf(statstr, "15-412! %08x %08x", smi_status(), counter);
48         outb(0x80, 0x3B);
49         strblit(statstr, 0, 0);
50         outb(0x80, 0x4B);
51         
52         /*
53         eth_poll();
54         */
55         
56         if (inl(0x840) & 0x1000)
57         {
58         /*
59                 pci_dump();
60         */
61                 outl(0x840, 0x1100);
62                 outl(0x840, 0x0100);
63         }
64
65 /*
66         smi_poll();
67         
68         pci_bother_all();
69  */
70         outl(0xCF8, pcisave);
71         outb(0x3D4, vgasave);
72 }
73
74 void timer_handler(smi_event_t ev)
75 {
76         static unsigned int ticks = 0;
77
78         smi_disable_event(SMI_EVENT_FAST_TIMER);
79         smi_enable_event(SMI_EVENT_FAST_TIMER);
80
81         outb(0x80, (ticks++) & 0xFF);
82
83         outlog();
84 }
85
86
87 void __firstrun_start() {
88         smi_disable();
89         outb(0x80, 0x41);
90
91         smi_register_handler(SMI_EVENT_FAST_TIMER, timer_handler);
92         smi_enable_event(SMI_EVENT_FAST_TIMER);
93
94         smi_enable();
95 }
96
This page took 0.032573 seconds and 4 git commands to generate.