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 33 /* 34 * Stop-A is originally a Sun thing that isn't standard on IP22 so to avoid 35 * accidents it's disabled by default on IP22. 36 * 37 * FIXME: provide a mechanism to change the value of stop_a_enabled. 38 */ 39 int stop_a_enabled; 40 41 void ip22_do_break(void) 42 { 43 if (!stop_a_enabled) 44 return; 45 46 printk("\n"); 47 ArcEnterInteractiveMode(); 48 } 49 50 EXPORT_SYMBOL(ip22_do_break); 51 52 extern void ip22_be_init(void) __init; 53 extern void ip22_time_init(void) __init; 54 55 void __init plat_mem_setup(void) 56 { 57 char *ctype; 58 char *cserial; 59 60 board_be_init = ip22_be_init; 61 ip22_time_init(); 62 63 /* Init the INDY HPC I/O controller. Need to call this before 64 * fucking with the memory controller because it needs to know the 65 * boardID and whether this is a Guiness or a FullHouse machine. 66 */ 67 sgihpc_init(); 68 69 /* Init INDY memory controller. */ 70 sgimc_init(); 71 72 #ifdef CONFIG_BOARD_SCACHE 73 /* Now enable boardcaches, if any. */ 74 indy_sc_init(); 75 #endif 76 77 /* Set EISA IO port base for Indigo2 78 * ioremap cannot fail */ 79 set_io_port_base((unsigned long)ioremap(0x00080000, 80 0x1fffffff - 0x00080000)); 81 /* ARCS console environment variable is set to "g?" for 82 * graphics console, it is set to "d" for the first serial 83 * line and "d2" for the second serial line. 84 * 85 * Need to check if the case is 'g' but no keyboard: 86 * (ConsoleIn/Out = serial) 87 */ 88 ctype = ArcGetEnvironmentVariable("console"); 89 cserial = ArcGetEnvironmentVariable("ConsoleOut"); 90 91 if ((ctype && *ctype == 'd') || (cserial && *cserial == 's')) { 92 static char options[8]; 93 char *baud = ArcGetEnvironmentVariable("dbaud"); 94 if (baud) 95 strcpy(options, baud); 96 add_preferred_console("ttyS", *(ctype + 1) == '2' ? 1 : 0, 97 baud ? options : NULL); 98 } else if (!ctype || *ctype != 'g') { 99 /* Use ARC if we don't want serial ('d') or graphics ('g'). */ 100 prom_flags |= PROM_FLAG_USE_AS_CONSOLE; 101 add_preferred_console("arc", 0, NULL); 102 } 103 104 #ifdef CONFIG_KGDB 105 { 106 char *kgdb_ttyd = prom_getcmdline(); 107 108 if ((kgdb_ttyd = strstr(kgdb_ttyd, "kgdb=ttyd")) != NULL) { 109 int line; 110 kgdb_ttyd += strlen("kgdb=ttyd"); 111 if (*kgdb_ttyd != '1' && *kgdb_ttyd != '2') 112 printk(KERN_INFO "KGDB: Uknown serial line /dev/ttyd%c" 113 ", falling back to /dev/ttyd1\n", *kgdb_ttyd); 114 line = *kgdb_ttyd == '2' ? 0 : 1; 115 printk(KERN_INFO "KGDB: Using serial line /dev/ttyd%d for " 116 "session\n", line ? 1 : 2); 117 rs_kgdb_hook(line); 118 119 printk(KERN_INFO "KGDB: Using serial line /dev/ttyd%d for " 120 "session, please connect your debugger\n", line ? 1:2); 121 122 kgdb_enabled = 1; 123 /* Breakpoints and stuff are in sgi_irq_setup() */ 124 } 125 } 126 #endif 127 128 #if defined(CONFIG_VT) && defined(CONFIG_SGI_NEWPORT_CONSOLE) 129 { 130 ULONG *gfxinfo; 131 ULONG * (*__vec)(void) = (void *) (long) 132 *((_PULONG *)(long)((PROMBLOCK)->pvector + 0x20)); 133 134 gfxinfo = __vec(); 135 sgi_gfxaddr = ((gfxinfo[1] >= 0xa0000000 136 && gfxinfo[1] <= 0xc0000000) 137 ? gfxinfo[1] - 0xa0000000 : 0); 138 139 /* newport addresses? */ 140 if (sgi_gfxaddr == 0x1f0f0000 || sgi_gfxaddr == 0x1f4f0000) { 141 conswitchp = &newport_con; 142 } 143 } 144 #endif 145 } 146