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