diff options
Diffstat (limited to 'arch/mips/sgi-ip22/ip22-setup.c')
| -rw-r--r-- | arch/mips/sgi-ip22/ip22-setup.c | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/arch/mips/sgi-ip22/ip22-setup.c b/arch/mips/sgi-ip22/ip22-setup.c new file mode 100644 index 00000000000..0e96a5d6799 --- /dev/null +++ b/arch/mips/sgi-ip22/ip22-setup.c @@ -0,0 +1,144 @@ +/* + * 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; + +static int __init ip22_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 + + return 0; +} + +early_initcall(ip22_setup); |