15de18cdeSSam Ravnborg /* 25de18cdeSSam Ravnborg * init.c: Initialize internal variables used by the PROM 35de18cdeSSam Ravnborg * library functions. 45de18cdeSSam Ravnborg * 55de18cdeSSam Ravnborg * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) 65de18cdeSSam Ravnborg * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) 75de18cdeSSam Ravnborg */ 85de18cdeSSam Ravnborg 95de18cdeSSam Ravnborg #include <linux/kernel.h> 105de18cdeSSam Ravnborg #include <linux/init.h> 115de18cdeSSam Ravnborg #include <linux/string.h> 125de18cdeSSam Ravnborg #include <linux/ctype.h> 135de18cdeSSam Ravnborg 145de18cdeSSam Ravnborg #include <asm/openprom.h> 155de18cdeSSam Ravnborg #include <asm/oplib.h> 165de18cdeSSam Ravnborg 175de18cdeSSam Ravnborg /* OBP version string. */ 185de18cdeSSam Ravnborg char prom_version[80]; 195de18cdeSSam Ravnborg 205de18cdeSSam Ravnborg /* The root node of the prom device tree. */ 215de18cdeSSam Ravnborg int prom_stdin, prom_stdout; 225de18cdeSSam Ravnborg int prom_chosen_node; 235de18cdeSSam Ravnborg 245de18cdeSSam Ravnborg /* You must call prom_init() before you attempt to use any of the 255de18cdeSSam Ravnborg * routines in the prom library. It returns 0 on success, 1 on 265de18cdeSSam Ravnborg * failure. It gets passed the pointer to the PROM vector. 275de18cdeSSam Ravnborg */ 285de18cdeSSam Ravnborg 295de18cdeSSam Ravnborg extern void prom_cif_init(void *, void *); 305de18cdeSSam Ravnborg 315de18cdeSSam Ravnborg void __init prom_init(void *cif_handler, void *cif_stack) 325de18cdeSSam Ravnborg { 335de18cdeSSam Ravnborg int node; 345de18cdeSSam Ravnborg 355de18cdeSSam Ravnborg prom_cif_init(cif_handler, cif_stack); 365de18cdeSSam Ravnborg 375de18cdeSSam Ravnborg prom_chosen_node = prom_finddevice(prom_chosen_path); 385de18cdeSSam Ravnborg if (!prom_chosen_node || prom_chosen_node == -1) 395de18cdeSSam Ravnborg prom_halt(); 405de18cdeSSam Ravnborg 415de18cdeSSam Ravnborg prom_stdin = prom_getint(prom_chosen_node, "stdin"); 425de18cdeSSam Ravnborg prom_stdout = prom_getint(prom_chosen_node, "stdout"); 435de18cdeSSam Ravnborg 445de18cdeSSam Ravnborg node = prom_finddevice("/openprom"); 455de18cdeSSam Ravnborg if (!node || 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