2 * init.c: Initialize internal variables used by the PROM
5 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
6 * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
9 #include <linux/kernel.h>
10 #include <linux/init.h>
11 #include <linux/string.h>
12 #include <linux/ctype.h>
14 #include <asm/openprom.h>
15 #include <asm/oplib.h>
17 /* OBP version string. */
18 char prom_version[80];
20 /* The root node of the prom device tree. */
22 phandle prom_chosen_node;
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.
29 extern void prom_cif_init(void *, void *);
31 void __init prom_init(void *cif_handler, void *cif_stack)
35 prom_cif_init(cif_handler, cif_stack);
37 prom_chosen_node = prom_finddevice(prom_chosen_path);
38 if (!prom_chosen_node || (s32)prom_chosen_node == -1)
41 prom_stdout = prom_getint(prom_chosen_node, "stdout");
43 node = prom_finddevice("/openprom");
44 if (!node || (s32)node == -1)
47 prom_getstring(node, "version", prom_version, sizeof(prom_version));
52 void __init prom_init_report(void)
54 printk("PROMLIB: Sun IEEE Boot Prom '%s'\n", prom_version);
55 printk("PROMLIB: Root node compatible: %s\n", prom_root_compatible);