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init.c

/*
 * init.c:  Initialize internal variables used by the PROM
 *          library functions.
 *
 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
 * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/string.h>
#include <linux/ctype.h>

#include <asm/openprom.h>
#include <asm/oplib.h>

/* OBP version string. */
char prom_version[80];

/* The root node of the prom device tree. */
int prom_stdin, prom_stdout;
int prom_chosen_node;

/* You must call prom_init() before you attempt to use any of the
 * routines in the prom library.  It returns 0 on success, 1 on
 * failure.  It gets passed the pointer to the PROM vector.
 */

extern void prom_cif_init(void *, void *);

void __init prom_init(void *cif_handler, void *cif_stack)
{
      int node;

      prom_cif_init(cif_handler, cif_stack);

      prom_chosen_node = prom_finddevice(prom_chosen_path);
      if (!prom_chosen_node || prom_chosen_node == -1)
            prom_halt();

      prom_stdin = prom_getint(prom_chosen_node, "stdin");
      prom_stdout = prom_getint(prom_chosen_node, "stdout");

      node = prom_finddevice("/openprom");
      if (!node || node == -1)
            prom_halt();

      prom_getstring(node, "version", prom_version, sizeof(prom_version));

      prom_printf("\n");
}

void __init prom_init_report(void)
{
      printk("PROMLIB: Sun IEEE Boot Prom '%s'\n", prom_version);
      printk("PROMLIB: Root node compatible: %s\n", prom_root_compatible);
}

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