LXR linux/arch/mips/fw/arc/init.c

   1/*
   2 * This file is subject to the terms and conditions of the GNU General Public
   3 * License.  See the file "COPYING" in the main directory of this archive
   4 * for more details.
   5 *
   6 * PROM library initialisation code.
   7 *
   8 * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
   9 */
  10#include <linux/init.h>
  11#include <linux/kernel.h>
  12
  13#include <asm/bootinfo.h>
  14#include <asm/sgialib.h>
  15#include <asm/smp-ops.h>
  16
  17#undef DEBUG_PROM_INIT
  18
  19/* Master romvec interface. */
  20struct linux_romvec *romvec;
  21
  22#if defined(CONFIG_64BIT) && defined(CONFIG_FW_ARC32)
  23/* stack for calling 32bit ARC prom */
  24u64 o32_stk[4096];
  25#endif
  26
  27void __init prom_init(void)
  28{
  29        PSYSTEM_PARAMETER_BLOCK pb = PROMBLOCK;
  30
  31        romvec = ROMVECTOR;
  32
  33        if (pb->magic != 0x53435241) {
  34                printk(KERN_CRIT "Aieee, bad prom vector magic %08lx\n",
  35                       (unsigned long) pb->magic);
  36                while(1)
  37                        ;
  38        }
  39
  40        prom_init_cmdline(fw_arg0, (LONG *)fw_arg1);
  41        prom_identify_arch();
  42        printk(KERN_INFO "PROMLIB: ARC firmware Version %d Revision %d\n",
  43               pb->ver, pb->rev);
  44        prom_meminit();
  45
  46#ifdef DEBUG_PROM_INIT
  47        pr_info("Press a key to reboot\n");
  48        ArcRead(0, &c, 1, &cnt);
  49        ArcEnterInteractiveMode();
  50#endif
  51}
  52