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https://github.com/torvalds/linux
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49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
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/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* PROM library initialisation code.
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*
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* Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
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*/
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <asm/bootinfo.h>
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#include <asm/sgialib.h>
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#undef DEBUG_PROM_INIT
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/* Master romvec interface. */
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struct linux_romvec *romvec;
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int prom_argc;
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LONG *_prom_argv, *_prom_envp;
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void __init prom_init(void)
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{
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PSYSTEM_PARAMETER_BLOCK pb = PROMBLOCK;
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romvec = ROMVECTOR;
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prom_argc = fw_arg0;
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_prom_argv = (LONG *) fw_arg1;
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_prom_envp = (LONG *) fw_arg2;
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if (pb->magic != 0x53435241) {
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prom_printf("Aieee, bad prom vector magic %08lx\n", pb->magic);
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while(1)
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;
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}
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prom_init_cmdline();
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prom_identify_arch();
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printk(KERN_INFO "PROMLIB: ARC firmware Version %d Revision %d\n",
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pb->ver, pb->rev);
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prom_meminit();
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#ifdef DEBUG_PROM_INIT
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prom_printf("Press a key to reboot\n");
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prom_getchar();
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ArcEnterInteractiveMode();
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#endif
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}
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