1 /*
2 * init.c: Initialize internal variables used by the PROM
3 * library functions.
4 *
5 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
6 * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
7 */
8
9 #include <linux/kernel.h>
10 #include <linux/init.h>
11 #include <linux/string.h>
12 #include <linux/ctype.h>
13
14 #include <asm/openprom.h>
15 #include <asm/oplib.h>
16
17 /* OBP version string. */
18 char prom_version[80];
19
20 /* The root node of the prom device tree. */
21 int prom_stdin, prom_stdout;
22 int prom_chosen_node;
23
24 /* You must call prom_init() before you attempt to use any of the
25 * routines in the prom library. It returns 0 on success, 1 on
26 * failure. It gets passed the pointer to the PROM vector.
27 */
28
29 extern void prom_cif_init(void *, void *);
30
prom_init(void * cif_handler,void * cif_stack)31 void __init prom_init(void *cif_handler, void *cif_stack)
32 {
33 int node;
34
35 prom_cif_init(cif_handler, cif_stack);
36
37 prom_chosen_node = prom_finddevice(prom_chosen_path);
38 if (!prom_chosen_node || prom_chosen_node == -1)
39 prom_halt();
40
41 prom_stdin = prom_getint(prom_chosen_node, "stdin");
42 prom_stdout = prom_getint(prom_chosen_node, "stdout");
43
44 node = prom_finddevice("/openprom");
45 if (!node || node == -1)
46 prom_halt();
47
48 prom_getstring(node, "version", prom_version, sizeof(prom_version));
49
50 prom_printf("\n");
51 }
52
prom_init_report(void)53 void __init prom_init_report(void)
54 {
55 printk("PROMLIB: Sun IEEE Boot Prom '%s'\n", prom_version);
56 printk("PROMLIB: Root node compatible: %s\n", prom_root_compatible);
57 }
58