1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * init.c: Initialize internal variables used by the PROM |
4 | * library functions. |
5 | * |
6 | * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) |
7 | * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) |
8 | */ |
9 | |
10 | #include <linux/kernel.h> |
11 | #include <linux/init.h> |
12 | #include <linux/string.h> |
13 | #include <linux/ctype.h> |
14 | |
15 | #include <asm/openprom.h> |
16 | #include <asm/oplib.h> |
17 | |
18 | /* OBP version string. */ |
19 | char prom_version[80]; |
20 | |
21 | /* The root node of the prom device tree. */ |
22 | int prom_stdout; |
23 | phandle prom_chosen_node; |
24 | |
25 | /* You must call prom_init() before you attempt to use any of the |
26 | * routines in the prom library. |
27 | * It gets passed the pointer to the PROM vector. |
28 | */ |
29 | |
30 | extern void prom_cif_init(void *); |
31 | |
32 | void __init prom_init(void *cif_handler) |
33 | { |
34 | phandle node; |
35 | |
36 | prom_cif_init(cif_handler); |
37 | |
38 | prom_chosen_node = prom_finddevice(prom_chosen_path); |
39 | if (!prom_chosen_node || (s32)prom_chosen_node == -1) |
40 | prom_halt(); |
41 | |
42 | prom_stdout = prom_getint(prom_chosen_node, "stdout" ); |
43 | |
44 | node = prom_finddevice("/openprom" ); |
45 | if (!node || (s32)node == -1) |
46 | prom_halt(); |
47 | |
48 | prom_getstring(node, "version" , prom_version, sizeof(prom_version)); |
49 | |
50 | prom_printf("\n" ); |
51 | } |
52 | |
53 | void __init prom_init_report(void) |
54 | { |
55 | printk("PROMLIB: Sun IEEE Boot Prom '%s'\n" , prom_version); |
56 | printk("PROMLIB: Root node compatible: %s\n" , prom_root_compatible); |
57 | } |
58 | |