Adrian Bunk | b00dc83 | 2008-05-19 16:52:27 -0700 | [diff] [blame^] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
David S. Miller | 90a6646 | 2006-03-08 17:18:19 -0800 | [diff] [blame] | 17 | /* OBP version string. */ |
| 18 | char prom_version[80]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | |
| 20 | /* The root node of the prom device tree. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | int prom_stdin, prom_stdout; |
| 22 | int prom_chosen_node; |
| 23 | |
| 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. |
| 27 | */ |
| 28 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | extern void prom_cif_init(void *, void *); |
| 30 | |
| 31 | void __init prom_init(void *cif_handler, void *cif_stack) |
| 32 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | int node; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | |
| 35 | prom_cif_init(cif_handler, cif_stack); |
| 36 | |
David S. Miller | bff06d5 | 2005-09-22 20:11:33 -0700 | [diff] [blame] | 37 | prom_chosen_node = prom_finddevice(prom_chosen_path); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | if (!prom_chosen_node || prom_chosen_node == -1) |
| 39 | prom_halt(); |
| 40 | |
David S. Miller | d82ace7 | 2006-02-09 02:52:44 -0800 | [diff] [blame] | 41 | prom_stdin = prom_getint(prom_chosen_node, "stdin"); |
| 42 | prom_stdout = prom_getint(prom_chosen_node, "stdout"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | |
| 44 | node = prom_finddevice("/openprom"); |
| 45 | if (!node || node == -1) |
| 46 | prom_halt(); |
| 47 | |
David S. Miller | 90a6646 | 2006-03-08 17:18:19 -0800 | [diff] [blame] | 48 | prom_getstring(node, "version", prom_version, sizeof(prom_version)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | |
David S. Miller | d82ace7 | 2006-02-09 02:52:44 -0800 | [diff] [blame] | 50 | prom_printf("\n"); |
David S. Miller | ce22e1d | 2008-02-07 02:14:48 -0800 | [diff] [blame] | 51 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | |
David S. Miller | ce22e1d | 2008-02-07 02:14:48 -0800 | [diff] [blame] | 53 | void __init prom_init_report(void) |
| 54 | { |
David S. Miller | 90a6646 | 2006-03-08 17:18:19 -0800 | [diff] [blame] | 55 | printk("PROMLIB: Sun IEEE Boot Prom '%s'\n", prom_version); |
David S. Miller | d82ace7 | 2006-02-09 02:52:44 -0800 | [diff] [blame] | 56 | printk("PROMLIB: Root node compatible: %s\n", prom_root_compatible); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | } |