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[netwatch.git] / netwatch / 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 <serial.h>
8 #include <fb.h>
9 #include <output.h>
10 #include <msr.h>
11 #include "../net/net.h"
12 #include "vga-overlay.h"
13
14 unsigned int counter = 0;
15 unsigned long pcisave = 0;
16 unsigned char vgasave = 0;
17
18 void smi_entry(void)
19 {
20         char statstr[512];
21
22         /* Reenable caching on SMRAM. */
23         WRMSR(0x202, (RDMSR(0x202) & ~(0xFFULL)) | 0x06ULL);
24
25         pcisave = inl(0xCF8);
26         vgasave = inb(0x3D4);
27         pci_unbother_all();
28         
29         serial_init();
30         
31         if (fb)
32                 fb->getvmode(fb->priv);
33
34         counter++;
35         if (!fb || fb->curmode.text)
36         {
37                 sprintf(statstr, "NetWatch! %08x %08x", smi_status(), counter);
38                 strblit(statstr, 0, 0, 0);
39         }
40         
41         eth_poll();
42         
43         if (inl(0x840) & 0x1000)
44         {
45         /*
46                 pci_dump();
47         */
48                 outl(0x840, 0x1100);
49                 outl(0x840, 0x0100);
50         }
51
52
53         smi_poll();
54         
55         pci_bother_all();
56         outl(0xCF8, pcisave);
57         outb(0x3D4, vgasave);
58         
59         /* Disable caching on SMRAM again, to prevent the user from whacking us. */
60         WRMSR(0x202, RDMSR(0x202) & ~(0xFFULL));
61 }
62
63 extern void timer_handler(smi_event_t ev);
64 extern void kbc_handler(smi_event_t ev);
65 extern void gbl_rls_handler(smi_event_t ev);
66
67 void __firstrun_stub() {
68
69         /* Try really hard to shut up USB_LEGKEY. */
70         pci_write16(0, 31, 2, 0xC0, pci_read16(0, 31, 2, 0xC0));
71         pci_write16(0, 31, 2, 0xC0, 0);
72         pci_write16(0, 31, 4, 0xC0, pci_read16(0, 31, 4, 0xC0));
73         pci_write16(0, 31, 4, 0xC0, 0);
74
75         /* Turn on the SMIs we want */
76         smi_disable();
77
78         smi_register_handler(SMI_EVENT_FAST_TIMER, timer_handler);
79         smi_enable_event(SMI_EVENT_FAST_TIMER);
80
81         smi_register_handler(SMI_EVENT_DEVTRAP_KBC, kbc_handler);
82         smi_enable_event(SMI_EVENT_DEVTRAP_KBC);
83
84         smi_register_handler(SMI_EVENT_GBL_RLS, gbl_rls_handler);
85         smi_enable_event(SMI_EVENT_GBL_RLS);
86
87         smi_enable();
88 }
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