Merge tag 'v3.3.7' into 3.3/master
[zen-stable.git] / arch / sparc / prom / init_32.c
blob26c64cea3c9c082e701f672e299a50ff2f70ad09
1 /*
2 * init.c: Initialize internal variables used by the PROM
3 * library functions.
5 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
6 * Copyright (C) 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
7 */
9 #include <linux/kernel.h>
10 #include <linux/init.h>
11 #include <linux/module.h>
13 #include <asm/openprom.h>
14 #include <asm/oplib.h>
16 struct linux_romvec *romvec;
17 EXPORT_SYMBOL(romvec);
19 enum prom_major_version prom_vers;
20 unsigned int prom_rev, prom_prev;
22 /* The root node of the prom device tree. */
23 phandle prom_root_node;
24 EXPORT_SYMBOL(prom_root_node);
26 /* Pointer to the device tree operations structure. */
27 struct linux_nodeops *prom_nodeops;
29 /* You must call prom_init() before you attempt to use any of the
30 * routines in the prom library. It returns 0 on success, 1 on
31 * failure. It gets passed the pointer to the PROM vector.
34 extern void prom_meminit(void);
35 extern void prom_ranges_init(void);
37 void __init prom_init(struct linux_romvec *rp)
39 romvec = rp;
41 switch(romvec->pv_romvers) {
42 case 0:
43 prom_vers = PROM_V0;
44 break;
45 case 2:
46 prom_vers = PROM_V2;
47 break;
48 case 3:
49 prom_vers = PROM_V3;
50 break;
51 default:
52 prom_printf("PROMLIB: Bad PROM version %d\n",
53 romvec->pv_romvers);
54 prom_halt();
55 break;
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) || ((s32)prom_root_node == -1))
64 prom_halt();
66 if((((unsigned long) prom_nodeops) == 0) ||
67 (((unsigned long) prom_nodeops) == -1))
68 prom_halt();
70 prom_meminit();
72 prom_ranges_init();
74 printk("PROMLIB: Sun Boot Prom Version %d Revision %d\n",
75 romvec->pv_romvers, prom_rev);
77 /* Initialization successful. */