1 /* 2 * ip22-setup.c: SGI specific setup, including init of the feature struct. 3 * 4 * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com) 5 * Copyright (C) 1997, 1998 Ralf Baechle (ralf@gnu.org) 6 */ 7 #include <linux/init.h> 8 #include <linux/kernel.h> 9 #include <linux/kdev_t.h> 10 #include <linux/types.h> 11 #include <linux/module.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 29 unsigned long sgi_gfxaddr; 30 EXPORT_SYMBOL_GPL(sgi_gfxaddr); 31 32 extern void ip22_be_init(void) __init; 33 34 void __init plat_mem_setup(void) 35 { 36 char *ctype; 37 char *cserial; 38 39 board_be_init = ip22_be_init; 40 41 /* Init the INDY HPC I/O controller. Need to call this before 42 * fucking with the memory controller because it needs to know the 43 * boardID and whether this is a Guiness or a FullHouse machine. 44 */ 45 sgihpc_init(); 46 47 /* Init INDY memory controller. */ 48 sgimc_init(); 49 50 #ifdef CONFIG_BOARD_SCACHE 51 /* Now enable boardcaches, if any. */ 52 indy_sc_init(); 53 #endif 54 55 /* Set EISA IO port base for Indigo2 56 * ioremap cannot fail */ 57 set_io_port_base((unsigned long)ioremap(0x00080000, 58 0x1fffffff - 0x00080000)); 59 /* ARCS console environment variable is set to "g?" for 60 * graphics console, it is set to "d" for the first serial 61 * line and "d2" for the second serial line. 62 * 63 * Need to check if the case is 'g' but no keyboard: 64 * (ConsoleIn/Out = serial) 65 */ 66 ctype = ArcGetEnvironmentVariable("console"); 67 cserial = ArcGetEnvironmentVariable("ConsoleOut"); 68 69 if ((ctype && *ctype == 'd') || (cserial && *cserial == 's')) { 70 static char options[8] __initdata; 71 char *baud = ArcGetEnvironmentVariable("dbaud"); 72 if (baud) 73 strcpy(options, baud); 74 add_preferred_console("ttyS", *(ctype + 1) == '2' ? 1 : 0, 75 baud ? options : NULL); 76 } else if (!ctype || *ctype != 'g') { 77 /* Use ARC if we don't want serial ('d') or graphics ('g'). */ 78 prom_flags |= PROM_FLAG_USE_AS_CONSOLE; 79 add_preferred_console("arc", 0, NULL); 80 } 81 82 #if defined(CONFIG_VT) && defined(CONFIG_SGI_NEWPORT_CONSOLE) 83 { 84 ULONG *gfxinfo; 85 ULONG * (*__vec)(void) = (void *) (long) 86 *((_PULONG *)(long)((PROMBLOCK)->pvector + 0x20)); 87 88 gfxinfo = __vec(); 89 sgi_gfxaddr = ((gfxinfo[1] >= 0xa0000000 90 && gfxinfo[1] <= 0xc0000000) 91 ? gfxinfo[1] - 0xa0000000 : 0); 92 93 /* newport addresses? */ 94 if (sgi_gfxaddr == 0x1f0f0000 || sgi_gfxaddr == 0x1f4f0000) { 95 conswitchp = &newport_con; 96 } 97 } 98 #endif 99 } 100