// SPDX-License-Identifier: GPL-2.0
/*
 * ip22-setup.c: SGI specific setup, including init of the feature struct.
 *
 * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
 * Copyright (C) 1997, 1998 Ralf Baechle (ralf@gnu.org)
 */
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/kdev_t.h>
#include <linux/types.h>
#include <linux/console.h>
#include <linux/sched.h>
#include <linux/string.h>
#include <linux/tty.h>

#include <asm/addrspace.h>
#include <asm/bcache.h>
#include <asm/bootinfo.h>
#include <asm/irq.h>
#include <asm/reboot.h>
#include <asm/time.h>
#include <asm/io.h>
#include <asm/traps.h>
#include <asm/sgialib.h>
#include <asm/sgi/mc.h>
#include <asm/sgi/hpc3.h>
#include <asm/sgi/ip22.h>

void __init plat_mem_setup(void)
{
        char *ctype;
        char *cserial;

        board_be_init = ip22_be_init;

        /* Init the INDY HPC I/O controller.  Need to call this before
         * fucking with the memory controller because it needs to know the
         * boardID and whether this is a Guiness or a FullHouse machine.
         */
        sgihpc_init();

        /* Init INDY memory controller. */
        sgimc_init();

#ifdef CONFIG_BOARD_SCACHE
        /* Now enable boardcaches, if any. */
        indy_sc_init();
#endif

        /* Set EISA IO port base for Indigo2
         * ioremap cannot fail */
        set_io_port_base((unsigned long)ioremap(0x00080000,
                                                0x1fffffff - 0x00080000));
        /* ARCS console environment variable is set to "g?" for
         * graphics console, it is set to "d" for the first serial
         * line and "d2" for the second serial line.
         *
         * Need to check if the case is 'g' but no keyboard:
         * (ConsoleIn/Out = serial)
         */
        ctype = ArcGetEnvironmentVariable("console");
        cserial = ArcGetEnvironmentVariable("ConsoleOut");

        if ((ctype && *ctype == 'd') || (cserial && *cserial == 's')) {
                static char options[8] __initdata;
                char *baud = ArcGetEnvironmentVariable("dbaud");
                if (baud)
                        strscpy(options, baud);
                add_preferred_console("ttyS", *(ctype + 1) == '2' ? 1 : 0,
                                      baud ? options : NULL);
        } else if (!ctype || *ctype != 'g') {
                /* Use ARC if we don't want serial ('d') or graphics ('g'). */
                prom_flags |= PROM_FLAG_USE_AS_CONSOLE;
                add_preferred_console("arc", 0, NULL);
        }
}