mirror of https://gitee.com/openkylin/linux.git
100 lines
2.6 KiB
C
100 lines
2.6 KiB
C
/*
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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 (dm@engr.sgi.com)
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* Copyright (C) 1997, 1998 Ralf Baechle (ralf@gnu.org)
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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];
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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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