LXR linux/arch/sparc/prom/init

   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. */
  18char prom_version[80];
  19
  20/* The root node of the prom device tree. */
  21int prom_stdout;
  22phandle 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
  29extern void prom_cif_init(void *, void *);
  30
  31void __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
  52void __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