2 * init.c: Initialize internal variables used by the PROM
5 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
8 #include <linux/kernel.h>
9 #include <linux/init.h>
11 #include <asm/openprom.h>
12 #include <asm/oplib.h>
14 struct linux_romvec *romvec;
15 enum prom_major_version prom_vers;
16 unsigned int prom_rev, prom_prev;
18 /* The root node of the prom device tree. */
21 /* Pointer to the device tree operations structure. */
22 struct linux_nodeops *prom_nodeops;
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_meminit(void);
30 extern void prom_ranges_init(void);
32 void __init prom_init(struct linux_romvec *rp)
36 switch(romvec->pv_romvers) {
47 prom_vers = PROM_P1275;
48 prom_printf("PROMLIB: Sun IEEE Prom not supported yet\n");
52 prom_printf("PROMLIB: Bad PROM version %d\n",
58 prom_rev = romvec->pv_plugin_revision;
59 prom_prev = romvec->pv_printrev;
60 prom_nodeops = romvec->pv_nodeops;
62 prom_root_node = prom_getsibling(0);
63 if((prom_root_node == 0) || (prom_root_node == -1))
66 if((((unsigned long) prom_nodeops) == 0) ||
67 (((unsigned long) prom_nodeops) == -1))
74 // printk("PROMLIB: Sun Boot Prom Version %d Revision %d\n",
75 // romvec->pv_romvers, prom_rev);
77 /* Initialization successful. */