mirror of https://gitee.com/openkylin/linux.git
58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* 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_stdout;
|
|
phandle prom_chosen_node;
|
|
|
|
/* You must call prom_init() before you attempt to use any of the
|
|
* routines in the prom library.
|
|
* It gets passed the pointer to the PROM vector.
|
|
*/
|
|
|
|
extern void prom_cif_init(void *);
|
|
|
|
void __init prom_init(void *cif_handler)
|
|
{
|
|
phandle node;
|
|
|
|
prom_cif_init(cif_handler);
|
|
|
|
prom_chosen_node = prom_finddevice(prom_chosen_path);
|
|
if (!prom_chosen_node || (s32)prom_chosen_node == -1)
|
|
prom_halt();
|
|
|
|
prom_stdout = prom_getint(prom_chosen_node, "stdout");
|
|
|
|
node = prom_finddevice("/openprom");
|
|
if (!node || (s32)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);
|
|
}
|