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_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 29 extern void prom_cif_init(void *, void *); 30 31 void __init prom_init(void *cif_handler, void *cif_stack) 32 { 33 int 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 || prom_chosen_node == -1) 39 prom_halt(); 40 41 prom_stdin = prom_getint(prom_chosen_node, "stdin"); 42 prom_stdout = prom_getint(prom_chosen_node, "stdout"); 43 44 node = prom_finddevice("/openprom"); 45 if (!node || 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