![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to main.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [MW Coherent from dump] / coherent / b / STREAMS / coh.386|
Return to main.c CVS log | Up to [MW Coherent from dump] / coherent / b / STREAMS / coh.386 |
1.1 root 1: /*
2: * File: main.c
3: */
4:
5: /*
6: * Includes.
7: */
8: #include <kernel/param.h>
9: #include <kernel/typed.h>
10:
11: #include <sys/coherent.h>
12: #include <sys/devices.h>
13: #include <sys/fdisk.h>
14: #include <sys/proc.h>
15: #include <sys/seg.h>
16: #include <sys/stat.h>
17:
18: /*
19: * Definitions.
20: * Constants.
21: * Macros with argument lists.
22: * Typedefs.
23: * Enums.
24: */
25: #ifndef VERSION /* This should be specified at compile time */
26: #define VERSION "..."
27: #endif
28: #ifndef RELEASE
29: #define RELEASE "0"
30: #endif
31:
32: /*
33: * Functions.
34: * Import Functions.
35: * Export Functions.
36: * Local Functions.
37: */
38: int read_cmos();
39:
40: static void set_at_drive_ct();
41: static void rpdev();
42:
43: /*
44: * Global Data.
45: * Import Variables.
46: * Export Variables.
47: * Local Variables.
48: */
49:
50: /*
51: * Configurable variables - see ker/conf/cohmain/Space.c
52: *
53: * at_drive_ct must be initialized at the number of "at" drives for PS1
54: * and ValuePoint systems as the number of hard drives is not in CMOS.
55: */
56: extern short at_drive_ct;
57:
58: extern dev_t rootdev;
59: extern dev_t pipedev;
60: extern int ronflag;
61: extern int PHYS_MEM;
62: extern unsigned long _entry; /* really the serial number */
63: extern unsigned long _bar; /* really the serial number also */
64:
65: /* End of configurable variables. */
66:
67: char version[] = VERSION;
68: char release[] = RELEASE;
69: char copyright[] = "Copyright 1982,1993 Mark Williams Company\n";
70:
71: #ifdef TRACER
72:
73: /*
74: * Take a checksum of the kernel text.
75: */
76: static unsigned theSum;
77:
78: static unsigned
79: checkSum ()
80: {
81: extern char stext [], __end_text [];
82: char * tmp = stext;
83: unsigned sum = 0;
84: while (tmp != __end_text)
85: sum = sum * 5 + * tmp ++;
86: return sum;
87: }
88:
89: /*
90: * Check the current kernel text segment against the boot checksum
91: */
92:
93: int
94: checkTheSum ()
95: {
96: unsigned newSum;
97:
98: if ((newSum = checkSum ()) != theSum)
99: panic ("Kernel checksum failure, %x vs %x", theSum, newSum);
100: return 0;
101: }
102: #endif /* defined (TRACER) */
103:
104:
105: main()
106: {
107: extern int BPFMAX;
108: char * ndpTypeName();
109: extern int (*ndpEmFn)();
110: extern short ndpType;
111:
112: #ifdef TRACER
113: theSum = checkSum ();
114: #endif
115:
116: CHIRP('a');
117: while (& u + 1 < & u) {
118: _CHIRP ('t', 8);
119: _CHIRP ('k', 6);
120: _CHIRP ('u', 4);
121: _CHIRP ('h', 2);
122: _CHIRP ('p', 0);
123: }
124:
125: #if _I386
126: wrNdpUser(0);
127: wrNdpSaved(0);
128: u.u_bpfmax = BPFMAX;
129: #endif
130: u.u_error = 0;
131: bufinit();
132: _CHIRP('0', 156);
133: cltinit();
134: _CHIRP('1', 156);
135: pcsinit();
136: _CHIRP('2', 156);
137: seginit();
138: _CHIRP('3', 156);
139: set_at_drive_ct();
140: _CHIRP('4', 156);
141: rpdev();
142: _CHIRP('5', 156);
143: devinit();
144: _CHIRP('6', 156);
145: rlinit();
146: _CHIRP('7', 156);
147:
148: putchar_init();
149: _CHIRP('8', 156);
150: printf("*** COHERENT Version %s - 386 Mode. %uKB free memory. ***\n",
151: release, ctob(allocno())/1024);
152:
153: /* Print default display type, based on BIOS int11h call. */
154: if ((int11 () & 0x30) == 0x30)
155: printf ("Monochrome. ");
156: else
157: printf ("Color. ");
158:
159: /* Display FP coprocessor/emulation setting. */
160: senseNdp ();
161: printf (ndpTypeName ());
162: if (ndpType <= 1 && ndpEmFn)
163: printf ("FP Emulation. ");
164:
165: /* Display general system configuration parameters. */
166: printf ("%u buffers. %u buckets. %u clists.\n",
167: NBUF, NHASH, NCLIST);
168: printf ("%uKB kalloc pool. %u KB phys pool.\n",
169: ALLSIZE / 1024, PHYS_MEM / 1024);
170: printf (copyright);
171:
172: if (_entry) {
173: printf ("Serial Number ");
174: printf ("%lu\n", _entry);
175: }
176:
177: /*
178: * Verify correct serial number
179: */
180: if (_entry != _bar)
181: panic("Verification error - call Mark Williams Company at +1-708-291-6700\n");
182:
183: /*
184: * Turn on clock, mount root device, start off processes
185: * and return.
186: */
187: batflag = 1;
188:
189: iprocp = SELF;
190: CHIRP('b');
191: if (pfork()) {
192: CHIRP('i');
193: idle();
194: } else {
195: fsminit();
196: CHIRP('-');
197: eprocp = SELF;
198: eveinit();
199: CHIRP('=');
200: }
201:
202: #ifdef TRACER
203: checkTheSum ();
204: #endif
205: CHIRP ('c');
206: }
207:
208: /*
209: * set_at_drive_ct()
210: *
211: * If "at_drive_ct" is already nonzero, don't change it.
212: * Else, read CMOS and return 0,1, or 2 as number of installed "at" drives.
213: */
214: void
215: set_at_drive_ct()
216: {
217: int u;
218:
219: if (at_drive_ct <= 0) {
220: /*
221: * Count nonzero drive types.
222: *
223: * High nibble of CMOS 0x12 is drive 0's type.
224: * Low nibble of CMOS 0x12 is drive 1's type.
225: */
226: u = read_cmos(0x12);
227: if (u & 0x00F0)
228: at_drive_ct++;
229: if (u & 0x000F)
230: at_drive_ct++;
231: }
232: }
233:
234: /*
235: * rpdev()
236: *
237: * If rootdev is zero, try to use data from tboot to set it.
238: * If pipedev is zero, make it 0x883 if ronflag == 1, else make it rootdev.
239: * Call rpdev() AFTER calling set_at_drive_ct().
240: */
241: static void rpdev()
242: {
243: FIFO *ffp;
244: typed_space *tp;
245: int found;
246: extern typed_space boot_gift;
247: unsigned root_ptn, root_drv, root_maj, root_min;
248:
249: if (rootdev == makedev(0,0)) {
250: found = 0;
251: if (ffp = fifo_open(&boot_gift, 0)) {
252: int rc;
253:
254: for (rc = 0; !found && (tp = fifo_read(ffp)); rc++) {
255: BIOS_ROOTDEV *brp = (BIOS_ROOTDEV *)tp->ts_data;
256: if (T_BIOS_ROOTDEV == tp->ts_type) {
257: found = 1;
258: root_ptn = brp->rd_partition;
259: }
260: }
261: fifo_close(ffp);
262:
263: }
264:
265: if (found) {
266: /*
267: * root_drv = BIOS # of root drive
268: * root_ptn = partition # in range 0..3
269: * if root on second "at" device, add 4 to minor #
270: * if root on second scsi device, add 16 to minor #
271: */
272: root_drv = root_ptn/NPARTN;
273: root_ptn %= NPARTN;
274: if (at_drive_ct > root_drv) {
275: root_maj = AT_MAJOR;
276: root_min = root_drv*NPARTN + root_ptn;
277: } else { /* root on SCSI device */
278: root_maj = SCSI_MAJOR;
279: root_min = (root_drv-at_drive_ct)*16 + root_ptn;
280: }
281: rootdev = makedev(root_maj, root_min);
282: printf("rootdev=(%d,%d)\n", root_maj, root_min);
283: }
284: }
285:
286: if (pipedev == makedev(0,0)) {
287: if (ronflag)
288: pipedev = makedev(RM_MAJOR, 0x83);
289: else
290: pipedev = rootdev;
291: printf("pipedev=(%d,%d)\n", (pipedev>>8)&0xff, pipedev&0xff);
292: }
293: }
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.