1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * init.c: Initialize internal variables used by the PROM 4*4882a593Smuzhiyun * library functions. 5*4882a593Smuzhiyun * 6*4882a593Smuzhiyun * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) 7*4882a593Smuzhiyun * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #include <linux/kernel.h> 11*4882a593Smuzhiyun #include <linux/init.h> 12*4882a593Smuzhiyun #include <linux/string.h> 13*4882a593Smuzhiyun #include <linux/ctype.h> 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun #include <asm/openprom.h> 16*4882a593Smuzhiyun #include <asm/oplib.h> 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun /* OBP version string. */ 19*4882a593Smuzhiyun char prom_version[80]; 20*4882a593Smuzhiyun 21*4882a593Smuzhiyun /* The root node of the prom device tree. */ 22*4882a593Smuzhiyun int prom_stdout; 23*4882a593Smuzhiyun phandle prom_chosen_node; 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun /* You must call prom_init() before you attempt to use any of the 26*4882a593Smuzhiyun * routines in the prom library. 27*4882a593Smuzhiyun * It gets passed the pointer to the PROM vector. 28*4882a593Smuzhiyun */ 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun extern void prom_cif_init(void *); 31*4882a593Smuzhiyun prom_init(void * cif_handler)32*4882a593Smuzhiyunvoid __init prom_init(void *cif_handler) 33*4882a593Smuzhiyun { 34*4882a593Smuzhiyun phandle node; 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun prom_cif_init(cif_handler); 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun prom_chosen_node = prom_finddevice(prom_chosen_path); 39*4882a593Smuzhiyun if (!prom_chosen_node || (s32)prom_chosen_node == -1) 40*4882a593Smuzhiyun prom_halt(); 41*4882a593Smuzhiyun 42*4882a593Smuzhiyun prom_stdout = prom_getint(prom_chosen_node, "stdout"); 43*4882a593Smuzhiyun 44*4882a593Smuzhiyun node = prom_finddevice("/openprom"); 45*4882a593Smuzhiyun if (!node || (s32)node == -1) 46*4882a593Smuzhiyun prom_halt(); 47*4882a593Smuzhiyun 48*4882a593Smuzhiyun prom_getstring(node, "version", prom_version, sizeof(prom_version)); 49*4882a593Smuzhiyun 50*4882a593Smuzhiyun prom_printf("\n"); 51*4882a593Smuzhiyun } 52*4882a593Smuzhiyun prom_init_report(void)53*4882a593Smuzhiyunvoid __init prom_init_report(void) 54*4882a593Smuzhiyun { 55*4882a593Smuzhiyun printk("PROMLIB: Sun IEEE Boot Prom '%s'\n", prom_version); 56*4882a593Smuzhiyun printk("PROMLIB: Root node compatible: %s\n", prom_root_compatible); 57*4882a593Smuzhiyun } 58