arch/sparc/prom/init_64.c

   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. */
  19 char prom_version[80];
  20
  21 /* The root node of the prom device tree. */
  22 int prom_stdout;
  23 phandle 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 void __init prom_init(void *cif_handler)
  30 {
  31         phandle node;
  32
  33         prom_cif_init(cif_handler);
  34
  35         prom_chosen_node = prom_finddevice(prom_chosen_path);
  36         if (!prom_chosen_node || (s32)prom_chosen_node == -1)
  37                 prom_halt();
  38
  39         prom_stdout = prom_getint(prom_chosen_node, "stdout");
  40
  41         node = prom_finddevice("/openprom");
  42         if (!node || (s32)node == -1)
  43                 prom_halt();
  44
  45         prom_getstring(node, "version", prom_version, sizeof(prom_version));
  46
  47         prom_printf("\n");
  48 }
  49
  50 void __init prom_init_report(void)
  51 {
  52         printk("PROMLIB: Sun IEEE Boot Prom '%s'\n", prom_version);
  53         printk("PROMLIB: Root node compatible: %s\n", prom_root_compatible);
  54 }