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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/mips/sgi-ip22/ip22-setup.c
10820 views
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/*

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 * ip22-setup.c: SGI specific setup, including init of the feature struct.

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 *

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 * Copyright (C) 1996 David S. Miller ([email protected])

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 * Copyright (C) 1997, 1998 Ralf Baechle ([email protected])

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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 <linux/kdev_t.h>

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#include <linux/types.h>

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#include <linux/module.h>

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#include <linux/console.h>

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#include <linux/sched.h>

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#include <linux/tty.h>

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#include <asm/addrspace.h>

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#include <asm/bcache.h>

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#include <asm/bootinfo.h>

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#include <asm/irq.h>

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#include <asm/reboot.h>

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#include <asm/time.h>

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#include <asm/io.h>

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#include <asm/traps.h>

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#include <asm/sgialib.h>

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#include <asm/sgi/mc.h>

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#include <asm/sgi/hpc3.h>

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#include <asm/sgi/ip22.h>

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unsigned long sgi_gfxaddr;

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EXPORT_SYMBOL_GPL(sgi_gfxaddr);

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extern void ip22_be_init(void) __init;

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void __init plat_mem_setup(void)

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{

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	char *ctype;

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	char *cserial;

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	board_be_init = ip22_be_init;

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	/* Init the INDY HPC I/O controller.  Need to call this before

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	 * fucking with the memory controller because it needs to know the

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	 * boardID and whether this is a Guiness or a FullHouse machine.

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	 */

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	sgihpc_init();

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	/* Init INDY memory controller. */

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	sgimc_init();

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#ifdef CONFIG_BOARD_SCACHE

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	/* Now enable boardcaches, if any. */

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	indy_sc_init();

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#endif

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	/* Set EISA IO port base for Indigo2

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	 * ioremap cannot fail */

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	set_io_port_base((unsigned long)ioremap(0x00080000,

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						0x1fffffff - 0x00080000));

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	/* ARCS console environment variable is set to "g?" for

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	 * graphics console, it is set to "d" for the first serial

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	 * line and "d2" for the second serial line.

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	 *

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	 * Need to check if the case is 'g' but no keyboard:

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	 * (ConsoleIn/Out = serial)

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	 */

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	ctype = ArcGetEnvironmentVariable("console");

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	cserial = ArcGetEnvironmentVariable("ConsoleOut");

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	if ((ctype && *ctype == 'd') || (cserial && *cserial == 's')) {

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		static char options[8] __initdata;

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		char *baud = ArcGetEnvironmentVariable("dbaud");

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		if (baud)

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			strcpy(options, baud);

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		add_preferred_console("ttyS", *(ctype + 1) == '2' ? 1 : 0,

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				      baud ? options : NULL);

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	} else if (!ctype || *ctype != 'g') {

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		/* Use ARC if we don't want serial ('d') or graphics ('g'). */

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		prom_flags |= PROM_FLAG_USE_AS_CONSOLE;

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		add_preferred_console("arc", 0, NULL);

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	}

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#if defined(CONFIG_VT) && defined(CONFIG_SGI_NEWPORT_CONSOLE)

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	{

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		ULONG *gfxinfo;

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		ULONG * (*__vec)(void) = (void *) (long)

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			*((_PULONG *)(long)((PROMBLOCK)->pvector + 0x20));

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		gfxinfo = __vec();

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		sgi_gfxaddr = ((gfxinfo[1] >= 0xa0000000

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			       && gfxinfo[1] <= 0xc0000000)

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			       ? gfxinfo[1] - 0xa0000000 : 0);

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		/* newport addresses? */

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		if (sgi_gfxaddr == 0x1f0f0000 || sgi_gfxaddr == 0x1f4f0000) {

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			conswitchp = &newport_con;

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		}

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	}

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#endif

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}

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