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