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/ds1286.h> 8 #include <linux/init.h> 9 #include <linux/kernel.h> 10 #include <linux/kdev_t.h> 11 #include <linux/types.h> 12 #include <linux/module.h> 13 #include <linux/console.h> 14 #include <linux/sched.h> 15 #include <linux/tty.h> 16 17 #include <asm/addrspace.h> 18 #include <asm/bcache.h> 19 #include <asm/bootinfo.h> 20 #include <asm/irq.h> 21 #include <asm/reboot.h> 22 #include <asm/time.h> 23 #include <asm/gdb-stub.h> 24 #include <asm/io.h> 25 #include <asm/traps.h> 26 #include <asm/sgialib.h> 27 #include <asm/sgi/mc.h> 28 #include <asm/sgi/hpc3.h> 29 #include <asm/sgi/ip22.h> 30 31 unsigned long sgi_gfxaddr; 32 EXPORT_SYMBOL_GPL(sgi_gfxaddr); 33 34 extern void ip22_be_init(void) __init; 35 36 void __init plat_mem_setup(void) 37 { 38 char *ctype; 39 char *cserial; 40 41 board_be_init = ip22_be_init; 42 43 /* Init the INDY HPC I/O controller. Need to call this before 44 * fucking with the memory controller because it needs to know the 45 * boardID and whether this is a Guiness or a FullHouse machine. 46 */ 47 sgihpc_init(); 48 49 /* Init INDY memory controller. */ 50 sgimc_init(); 51 52 #ifdef CONFIG_BOARD_SCACHE 53 /* Now enable boardcaches, if any. */ 54 indy_sc_init(); 55 #endif 56 57 /* Set EISA IO port base for Indigo2 58 * ioremap cannot fail */ 59 set_io_port_base((unsigned long)ioremap(0x00080000, 60 0x1fffffff - 0x00080000)); 61 /* ARCS console environment variable is set to "g?" for 62 * graphics console, it is set to "d" for the first serial 63 * line and "d2" for the second serial line. 64 * 65 * Need to check if the case is 'g' but no keyboard: 66 * (ConsoleIn/Out = serial) 67 */ 68 ctype = ArcGetEnvironmentVariable("console"); 69 cserial = ArcGetEnvironmentVariable("ConsoleOut"); 70 71 if ((ctype && *ctype == 'd') || (cserial && *cserial == 's')) { 72 static char options[8]; 73 char *baud = ArcGetEnvironmentVariable("dbaud"); 74 if (baud) 75 strcpy(options, baud); 76 add_preferred_console("ttyS", *(ctype + 1) == '2' ? 1 : 0, 77 baud ? options : NULL); 78 } else if (!ctype || *ctype != 'g') { 79 /* Use ARC if we don't want serial ('d') or graphics ('g'). */ 80 prom_flags |= PROM_FLAG_USE_AS_CONSOLE; 81 add_preferred_console("arc", 0, NULL); 82 } 83 84 #ifdef CONFIG_KGDB 85 { 86 char *kgdb_ttyd = prom_getcmdline(); 87 88 if ((kgdb_ttyd = strstr(kgdb_ttyd, "kgdb=ttyd")) != NULL) { 89 int line; 90 kgdb_ttyd += strlen("kgdb=ttyd"); 91 if (*kgdb_ttyd != '1' && *kgdb_ttyd != '2') 92 printk(KERN_INFO "KGDB: Uknown serial line /dev/ttyd%c" 93 ", falling back to /dev/ttyd1\n", *kgdb_ttyd); 94 line = *kgdb_ttyd == '2' ? 0 : 1; 95 printk(KERN_INFO "KGDB: Using serial line /dev/ttyd%d for " 96 "session\n", line ? 1 : 2); 97 rs_kgdb_hook(line); 98 99 printk(KERN_INFO "KGDB: Using serial line /dev/ttyd%d for " 100 "session, please connect your debugger\n", line ? 1:2); 101 102 kgdb_enabled = 1; 103 /* Breakpoints and stuff are in sgi_irq_setup() */ 104 } 105 } 106 #endif 107 108 #if defined(CONFIG_VT) && defined(CONFIG_SGI_NEWPORT_CONSOLE) 109 { 110 ULONG *gfxinfo; 111 ULONG * (*__vec)(void) = (void *) (long) 112 *((_PULONG *)(long)((PROMBLOCK)->pvector + 0x20)); 113 114 gfxinfo = __vec(); 115 sgi_gfxaddr = ((gfxinfo[1] >= 0xa0000000 116 && gfxinfo[1] <= 0xc0000000) 117 ? gfxinfo[1] - 0xa0000000 : 0); 118 119 /* newport addresses? */ 120 if (sgi_gfxaddr == 0x1f0f0000 || sgi_gfxaddr == 0x1f4f0000) { 121 conswitchp = &newport_con; 122 } 123 } 124 #endif 125 } 126