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/*
* ip22-setup.c: SGI specific setup, including init of the feature struct.
*
* Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
* Copyright (C) 1997, 1998 Ralf Baechle (ralf@gnu.org)
*/
#include <linux/config.h>
#include <linux/ds1286.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/kdev_t.h>
#include <linux/types.h>
#include <linux/module.h>
#include <linux/console.h>
#include <linux/sched.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/gdb-stub.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>
unsigned long sgi_gfxaddr;
/*
* Stop-A is originally a Sun thing that isn't standard on IP22 so to avoid
* accidents it's disabled by default on IP22.
*
* FIXME: provide a mechanism to change the value of stop_a_enabled.
*/
int stop_a_enabled;
void ip22_do_break(void)
{
if (!stop_a_enabled)
return;
printk("\n");
ArcEnterInteractiveMode();
}
EXPORT_SYMBOL(ip22_do_break);
extern void ip22_be_init(void) __init;
extern void ip22_time_init(void) __init;
void __init plat_setup(void)
{
char *ctype;
board_be_init = ip22_be_init;
ip22_time_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.
*/
ctype = ArcGetEnvironmentVariable("console");
if (ctype && *ctype == 'd') {
static char options[8];
char *baud = ArcGetEnvironmentVariable("dbaud");
if (baud)
strcpy(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 Newport ('g'). */
prom_flags |= PROM_FLAG_USE_AS_CONSOLE;
add_preferred_console("arc", 0, NULL);
}
#ifdef CONFIG_KGDB
{
char *kgdb_ttyd = prom_getcmdline();
if ((kgdb_ttyd = strstr(kgdb_ttyd, "kgdb=ttyd")) != NULL) {
int line;
kgdb_ttyd += strlen("kgdb=ttyd");
if (*kgdb_ttyd != '1' && *kgdb_ttyd != '2')
printk(KERN_INFO "KGDB: Uknown serial line /dev/ttyd%c"
", falling back to /dev/ttyd1\n", *kgdb_ttyd);
line = *kgdb_ttyd == '2' ? 0 : 1;
printk(KERN_INFO "KGDB: Using serial line /dev/ttyd%d for "
"session\n", line ? 1 : 2);
rs_kgdb_hook(line);
printk(KERN_INFO "KGDB: Using serial line /dev/ttyd%d for "
"session, please connect your debugger\n", line ? 1:2);
kgdb_enabled = 1;
/* Breakpoints and stuff are in sgi_irq_setup() */
}
}
#endif
#if defined(CONFIG_VT) && defined(CONFIG_SGI_NEWPORT_CONSOLE)
{
ULONG *gfxinfo;
ULONG * (*__vec)(void) = (void *) (long)
*((_PULONG *)(long)((PROMBLOCK)->pvector + 0x20));
gfxinfo = __vec();
sgi_gfxaddr = ((gfxinfo[1] >= 0xa0000000
&& gfxinfo[1] <= 0xc0000000)
? gfxinfo[1] - 0xa0000000 : 0);
/* newport addresses? */
if (sgi_gfxaddr == 0x1f0f0000 || sgi_gfxaddr == 0x1f4f0000) {
conswitchp = &newport_con;
}
}
#endif
}
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