LXR linux/arch/sparc/prom/init

   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. */
  19char prom_version[80];
  20
  21/* The root node of the prom device tree. */
  22int prom_stdout;
  23phandle 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
  30extern void prom_cif_init(void *);
  31
  32void __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
  53void __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