1 /* 2 * ip22-setup.c: SGI specific setup, including init of the feature struct. 3 * 4 * Copyright (C) 1996 David S. Miller (davem@davemloft.net) 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/console.h> 12 #include <linux/sched.h> 13 #include <linux/tty.h> 14 15 #include <asm/addrspace.h> 16 #include <asm/bcache.h> 17 #include <asm/bootinfo.h> 18 #include <asm/irq.h> 19 #include <asm/reboot.h> 20 #include <asm/time.h> 21 #include <asm/io.h> 22 #include <asm/traps.h> 23 #include <asm/sgialib.h> 24 #include <asm/sgi/mc.h> 25 #include <asm/sgi/hpc3.h> 26 #include <asm/sgi/ip22.h> 27 28 extern void ip22_be_init(void) __init; 29 30 void __init plat_mem_setup(void) 31 { 32 char *ctype; 33 char *cserial; 34 35 board_be_init = ip22_be_init; 36 37 /* Init the INDY HPC I/O controller. Need to call this before 38 * fucking with the memory controller because it needs to know the 39 * boardID and whether this is a Guiness or a FullHouse machine. 40 */ 41 sgihpc_init(); 42 43 /* Init INDY memory controller. */ 44 sgimc_init(); 45 46 #ifdef CONFIG_BOARD_SCACHE 47 /* Now enable boardcaches, if any. */ 48 indy_sc_init(); 49 #endif 50 51 /* Set EISA IO port base for Indigo2 52 * ioremap cannot fail */ 53 set_io_port_base((unsigned long)ioremap(0x00080000, 54 0x1fffffff - 0x00080000)); 55 /* ARCS console environment variable is set to "g?" for 56 * graphics console, it is set to "d" for the first serial 57 * line and "d2" for the second serial line. 58 * 59 * Need to check if the case is 'g' but no keyboard: 60 * (ConsoleIn/Out = serial) 61 */ 62 ctype = ArcGetEnvironmentVariable("console"); 63 cserial = ArcGetEnvironmentVariable("ConsoleOut"); 64 65 if ((ctype && *ctype == 'd') || (cserial && *cserial == 's')) { 66 static char options[8] __initdata; 67 char *baud = ArcGetEnvironmentVariable("dbaud"); 68 if (baud) 69 strcpy(options, baud); 70 add_preferred_console("ttyS", *(ctype + 1) == '2' ? 1 : 0, 71 baud ? options : NULL); 72 } else if (!ctype || *ctype != 'g') { 73 /* Use ARC if we don't want serial ('d') or graphics ('g'). */ 74 prom_flags |= PROM_FLAG_USE_AS_CONSOLE; 75 add_preferred_console("arc", 0, NULL); 76 } 77 } 78