1*b2441318SGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0 25de18cdeSSam Ravnborg /* 35de18cdeSSam Ravnborg * init.c: Initialize internal variables used by the PROM 45de18cdeSSam Ravnborg * library functions. 55de18cdeSSam Ravnborg * 65de18cdeSSam Ravnborg * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) 75de18cdeSSam Ravnborg * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) 85de18cdeSSam Ravnborg */ 95de18cdeSSam Ravnborg 105de18cdeSSam Ravnborg #include <linux/kernel.h> 115de18cdeSSam Ravnborg #include <linux/init.h> 125de18cdeSSam Ravnborg #include <linux/string.h> 135de18cdeSSam Ravnborg #include <linux/ctype.h> 145de18cdeSSam Ravnborg 155de18cdeSSam Ravnborg #include <asm/openprom.h> 165de18cdeSSam Ravnborg #include <asm/oplib.h> 175de18cdeSSam Ravnborg 185de18cdeSSam Ravnborg /* OBP version string. */ 195de18cdeSSam Ravnborg char prom_version[80]; 205de18cdeSSam Ravnborg 215de18cdeSSam Ravnborg /* The root node of the prom device tree. */ 22bce5feeaSDavid S. Miller int prom_stdout; 238d125562SAndres Salomon phandle prom_chosen_node; 245de18cdeSSam Ravnborg 255de18cdeSSam Ravnborg /* You must call prom_init() before you attempt to use any of the 26e393d1bdSGeert Uytterhoeven * routines in the prom library. 27e393d1bdSGeert Uytterhoeven * It gets passed the pointer to the PROM vector. 285de18cdeSSam Ravnborg */ 295de18cdeSSam Ravnborg 30ef3e035cSDavid S. Miller extern void prom_cif_init(void *); 315de18cdeSSam Ravnborg 32ef3e035cSDavid S. Miller void __init prom_init(void *cif_handler) 335de18cdeSSam Ravnborg { 348d125562SAndres Salomon phandle node; 355de18cdeSSam Ravnborg 36ef3e035cSDavid S. Miller prom_cif_init(cif_handler); 375de18cdeSSam Ravnborg 385de18cdeSSam Ravnborg prom_chosen_node = prom_finddevice(prom_chosen_path); 394a3a2552SAndres Salomon if (!prom_chosen_node || (s32)prom_chosen_node == -1) 405de18cdeSSam Ravnborg prom_halt(); 415de18cdeSSam Ravnborg 425de18cdeSSam Ravnborg prom_stdout = prom_getint(prom_chosen_node, "stdout"); 435de18cdeSSam Ravnborg 445de18cdeSSam Ravnborg node = prom_finddevice("/openprom"); 454a3a2552SAndres Salomon if (!node || (s32)node == -1) 465de18cdeSSam Ravnborg prom_halt(); 475de18cdeSSam Ravnborg 485de18cdeSSam Ravnborg prom_getstring(node, "version", prom_version, sizeof(prom_version)); 495de18cdeSSam Ravnborg 505de18cdeSSam Ravnborg prom_printf("\n"); 515de18cdeSSam Ravnborg } 525de18cdeSSam Ravnborg 535de18cdeSSam Ravnborg void __init prom_init_report(void) 545de18cdeSSam Ravnborg { 555de18cdeSSam Ravnborg printk("PROMLIB: Sun IEEE Boot Prom '%s'\n", prom_version); 565de18cdeSSam Ravnborg printk("PROMLIB: Root node compatible: %s\n", prom_root_compatible); 575de18cdeSSam Ravnborg } 58