]> 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 "vga-overlay.h"
6 #include <smram.h>
7
8 extern int _bss, _bssend;
9
10 extern void timer_handler(smi_event_t ev);
11 extern void kbc_handler(smi_event_t ev);
12
13 void __firstrun_start() {
14         unsigned char *bp;
15         smram_state_t smram;
16         
17         smram = smram_save_state();
18         smram_tseg_set_state(SMRAM_TSEG_OPEN);
19         
20         for (bp = (void *)&_bss; (void *)bp < (void *)&_bssend; bp++)
21                 *bp = 0;
22         
23         dologf("NetWatch running");
24
25         /* Try really hard to shut up USB_LEGKEY. */
26         pci_write16(0, 31, 2, 0xC0, pci_read16(0, 31, 2, 0xC0));
27         pci_write16(0, 31, 2, 0xC0, 0);
28         pci_write16(0, 31, 4, 0xC0, pci_read16(0, 31, 4, 0xC0));
29         pci_write16(0, 31, 4, 0xC0, 0);
30
31         /* Turn on the SMIs we want */
32         smi_disable();
33         
34         smi_register_handler(SMI_EVENT_FAST_TIMER, timer_handler);
35         smi_enable_event(SMI_EVENT_FAST_TIMER);
36         
37         smi_register_handler(SMI_EVENT_DEVTRAP_KBC, kbc_handler);
38         smi_enable_event(SMI_EVENT_DEVTRAP_KBC);
39
40         smi_enable();
41         
42         smram_restore_state(smram);
43 }
44
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