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// SPDX-License-Identifier: GPL-2.0
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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/console.h>
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#include <linux/sched.h>
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#include <linux/string.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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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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			strscpy(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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}
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