]> Joshua Wise's Git repositories - netwatch.git/blob - aseg/firstrun.c
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[netwatch.git] / aseg / firstrun.c
1 #include <io.h>
2 #include <smi.h>
3 #include <pci.h>
4 #include <reg-82801b.h>
5 #include <output.h>
6 #include "vga-overlay.h"
7 #include <smram.h>
8
9 extern int _bss, _bssend;
10
11 extern void timer_handler(smi_event_t ev);
12 extern void kbc_handler(smi_event_t ev);
13 extern void gbl_rls_handler(smi_event_t ev);
14
15 static int found = 0, _bus, _dev, _fn;
16
17 void do_bother()
18 {
19         int bar;
20
21         if (!found)
22                 return;
23                 
24         pci_write16(_bus, _dev, _fn, 0x04, 0x00);
25         for (bar = 0; bar < 6; bar++)
26                 pci_write32(_bus, _dev, _fn, 0x10 + bar*4, 0x1FFFFFFF);
27 }
28
29 int bother_3c905(pci_dev_t *dev)
30 {
31         if (dev->vid == 0x10B7 || dev->did == 0x9200)
32         {
33                 outputf("Found a 3c905 to bother");
34                 
35                 _bus = dev->bus;
36                 _dev = dev->dev;
37                 _fn = dev->fn;
38                 found = 1;
39                 
40                 do_bother();
41                 
42                 return 1;
43         }
44         return 0;
45 }
46
47 void __firstrun_start() {
48         unsigned char *bp;
49         smram_state_t smram;
50         
51         smram = smram_save_state();
52         smram_tseg_set_state(SMRAM_TSEG_OPEN);
53         
54         for (bp = (void *)&_bss; (void *)bp < (void *)&_bssend; bp++)
55                 *bp = 0;
56         
57         outputf("NetWatch running");
58
59         /* Try really hard to shut up USB_LEGKEY. */
60         pci_write16(0, 31, 2, 0xC0, pci_read16(0, 31, 2, 0xC0));
61         pci_write16(0, 31, 2, 0xC0, 0);
62         pci_write16(0, 31, 4, 0xC0, pci_read16(0, 31, 4, 0xC0));
63         pci_write16(0, 31, 4, 0xC0, 0);
64
65         /* Turn on the SMIs we want */
66         smi_disable();
67         
68         pci_probe(bother_3c905);
69         
70         smi_register_handler(SMI_EVENT_FAST_TIMER, timer_handler);
71         smi_enable_event(SMI_EVENT_FAST_TIMER);
72         
73         smi_register_handler(SMI_EVENT_DEVTRAP_KBC, kbc_handler);
74         smi_enable_event(SMI_EVENT_DEVTRAP_KBC);
75         
76         smi_register_handler(SMI_EVENT_GBL_RLS, gbl_rls_handler);
77         smi_enable_event(SMI_EVENT_GBL_RLS);
78
79         smi_enable();
80         
81         smram_restore_state(smram);
82 }
83
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