cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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ip22-setup.c (2188B)

      1// SPDX-License-Identifier: GPL-2.0
      2/*
      3 * ip22-setup.c: SGI specific setup, including init of the feature struct.
      4 *
      5 * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
      6 * Copyright (C) 1997, 1998 Ralf Baechle (ralf@gnu.org)
      7 */
      8#include <linux/init.h>
      9#include <linux/kernel.h>
     10#include <linux/kdev_t.h>
     11#include <linux/types.h>
     12#include <linux/console.h>
     13#include <linux/sched.h>
     14#include <linux/tty.h>
     15
     16#include <asm/addrspace.h>
     17#include <asm/bcache.h>
     18#include <asm/bootinfo.h>
     19#include <asm/irq.h>
     20#include <asm/reboot.h>
     21#include <asm/time.h>
     22#include <asm/io.h>
     23#include <asm/traps.h>
     24#include <asm/sgialib.h>
     25#include <asm/sgi/mc.h>
     26#include <asm/sgi/hpc3.h>
     27#include <asm/sgi/ip22.h>
     28
     29extern void ip22_be_init(void) __init;
     30
     31void __init plat_mem_setup(void)
     32{
     33	char *ctype;
     34	char *cserial;
     35
     36	board_be_init = ip22_be_init;
     37
     38	/* Init the INDY HPC I/O controller.  Need to call this before
     39	 * fucking with the memory controller because it needs to know the
     40	 * boardID and whether this is a Guiness or a FullHouse machine.
     41	 */
     42	sgihpc_init();
     43
     44	/* Init INDY memory controller. */
     45	sgimc_init();
     46
     47#ifdef CONFIG_BOARD_SCACHE
     48	/* Now enable boardcaches, if any. */
     49	indy_sc_init();
     50#endif
     51
     52	/* Set EISA IO port base for Indigo2
     53	 * ioremap cannot fail */
     54	set_io_port_base((unsigned long)ioremap(0x00080000,
     55						0x1fffffff - 0x00080000));
     56	/* ARCS console environment variable is set to "g?" for
     57	 * graphics console, it is set to "d" for the first serial
     58	 * line and "d2" for the second serial line.
     59	 *
     60	 * Need to check if the case is 'g' but no keyboard:
     61	 * (ConsoleIn/Out = serial)
     62	 */
     63	ctype = ArcGetEnvironmentVariable("console");
     64	cserial = ArcGetEnvironmentVariable("ConsoleOut");
     65
     66	if ((ctype && *ctype == 'd') || (cserial && *cserial == 's')) {
     67		static char options[8] __initdata;
     68		char *baud = ArcGetEnvironmentVariable("dbaud");
     69		if (baud)
     70			strcpy(options, baud);
     71		add_preferred_console("ttyS", *(ctype + 1) == '2' ? 1 : 0,
     72				      baud ? options : NULL);
     73	} else if (!ctype || *ctype != 'g') {
     74		/* Use ARC if we don't want serial ('d') or graphics ('g'). */
     75		prom_flags |= PROM_FLAG_USE_AS_CONSOLE;
     76		add_preferred_console("arc", 0, NULL);
     77	}
     78}