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/*
* This file is subject to the terms and conditions of the GNU General Public+
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* PROM library initialisation code.
*
* Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <asm/sgialib.h>
#undef DEBUG_PROM_INIT
/* Master romvec interface. */
struct linux_romvec *romvec;
struct linux_promblock *sgi_pblock;
int prom_argc;
char **prom_argv, **prom_envp;
unsigned short prom_vers, prom_rev;
extern void prom_testtree(void);
extern void arc_setup_console(void);
void __init prom_init(int argc, char **argv, char **envp, int *prom_vec)
{
struct linux_promblock *pb;
romvec = ROMVECTOR;
pb = sgi_pblock = PROMBLOCK;
prom_argc = argc;
prom_argv = argv;
prom_envp = envp;
#if 0
/* arc_printf should not use prom_printf as soon as we free
* the prom buffers - This horribly breaks on Indys with framebuffer
* as it simply stops after initialising swap - On the Indigo2 serial
* console you will get A LOT illegal instructions - Only enable
* this for early init crashes - This also brings up artefacts of
* printing everything twice on serial console and on GFX Console
* this has the effect of having the prom printing everything
* in the small rectangle and the kernel printing around.
*/
arc_setup_console();
#endif
if (pb->magic != 0x53435241) {
prom_printf("Aieee, bad prom vector magic %08lx\n", pb->magic);
while(1)
;
}
prom_init_cmdline();
prom_vers = pb->ver;
prom_rev = pb->rev;
prom_identify_arch();
printk("PROMLIB: ARC firmware Version %d Revision %d\n",
prom_vers, prom_rev);
prom_meminit();
#ifdef DEBUG_PROM_INIT
{
prom_printf("Press a key to reboot\n");
(void) prom_getchar();
romvec->imode();
}
#endif
}
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