xref: /openbmc/linux/arch/sparc/prom/init_64.c (revision 31b90347)
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_stdout;
22 phandle prom_chosen_node;
23 
24 /* You must call prom_init() before you attempt to use any of the
25  * routines in the prom library.
26  * It gets passed the pointer to the PROM vector.
27  */
28 
29 extern void prom_cif_init(void *, void *);
30 
31 void __init prom_init(void *cif_handler, void *cif_stack)
32 {
33 	phandle 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 || (s32)prom_chosen_node == -1)
39 		prom_halt();
40 
41 	prom_stdout = prom_getint(prom_chosen_node, "stdout");
42 
43 	node = prom_finddevice("/openprom");
44 	if (!node || (s32)node == -1)
45 		prom_halt();
46 
47 	prom_getstring(node, "version", prom_version, sizeof(prom_version));
48 
49 	prom_printf("\n");
50 }
51 
52 void __init prom_init_report(void)
53 {
54 	printk("PROMLIB: Sun IEEE Boot Prom '%s'\n", prom_version);
55 	printk("PROMLIB: Root node compatible: %s\n", prom_root_compatible);
56 }
57