1 /* $Id: init.c,v 1.9 1996/12/18 06:46:55 tridge Exp $
2 * init.c: Initialize internal variables used by the PROM
5 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
8 #include <linux/config.h>
9 #include <linux/kernel.h>
10 #include <linux/init.h>
12 #include <asm/openprom.h>
13 #include <asm/oplib.h>
15 struct linux_romvec *romvec;
16 enum prom_major_version prom_vers;
17 unsigned int prom_rev, prom_prev;
19 /* The root node of the prom device tree. */
22 /* Pointer to the device tree operations structure. */
23 struct linux_nodeops *prom_nodeops;
25 /* You must call prom_init() before you attempt to use any of the
26 * routines in the prom library. It returns 0 on success, 1 on
27 * failure. It gets passed the pointer to the PROM vector.
30 extern void prom_meminit(void);
31 extern void prom_ranges_init(void);
33 void __init prom_init(struct linux_romvec *rp)
36 extern struct linux_romvec *ap_prom_init(void);
42 switch(romvec->pv_romvers) {
53 prom_vers = PROM_P1275;
54 prom_printf("PROMLIB: Sun IEEE Prom not supported yet\n");
57 case 42: /* why not :-) */
58 prom_vers = PROM_AP1000;
62 prom_printf("PROMLIB: Bad PROM version %d\n",
68 prom_rev = romvec->pv_plugin_revision;
69 prom_prev = romvec->pv_printrev;
70 prom_nodeops = romvec->pv_nodeops;
72 prom_root_node = prom_getsibling(0);
73 if((prom_root_node == 0) || (prom_root_node == -1))
76 if((((unsigned long) prom_nodeops) == 0) ||
77 (((unsigned long) prom_nodeops) == -1))
84 // printk("PROMLIB: Sun Boot Prom Version %d Revision %d\n",
85 // romvec->pv_romvers, prom_rev);
87 /* Initialization successful. */