1 /* 2 * Setup pointers to hardware dependent routines. 3 * 4 * This file is subject to the terms and conditions of the GNU General Public 5 * License. See the file "COPYING" in the main directory of this archive 6 * for more details. 7 * 8 * Copyright (C) 1996, 1997, 2004, 05 by Ralf Baechle (ralf@linux-mips.org) 9 * Copyright (C) 2001, 2002, 2003 by Liam Davies (ldavies@agile.tv) 10 * 11 */ 12 #include <linux/init.h> 13 #include <linux/interrupt.h> 14 #include <linux/io.h> 15 #include <linux/ioport.h> 16 #include <linux/pm.h> 17 18 #include <asm/bootinfo.h> 19 #include <asm/reboot.h> 20 #include <asm/gt64120.h> 21 22 #include <cobalt.h> 23 24 extern void cobalt_machine_restart(char *command); 25 extern void cobalt_machine_halt(void); 26 27 const char *get_system_type(void) 28 { 29 switch (cobalt_board_id) { 30 case COBALT_BRD_ID_QUBE1: 31 return "Cobalt Qube"; 32 case COBALT_BRD_ID_RAQ1: 33 return "Cobalt RaQ"; 34 case COBALT_BRD_ID_QUBE2: 35 return "Cobalt Qube2"; 36 case COBALT_BRD_ID_RAQ2: 37 return "Cobalt RaQ2"; 38 } 39 return "MIPS Cobalt"; 40 } 41 42 /* 43 * Cobalt doesn't have PS/2 keyboard/mouse interfaces, 44 * keyboard conntroller is never used. 45 * Also PCI-ISA bridge DMA contoroller is never used. 46 */ 47 static struct resource cobalt_reserved_resources[] = { 48 { /* dma1 */ 49 .start = 0x00, 50 .end = 0x1f, 51 .name = "reserved", 52 .flags = IORESOURCE_BUSY | IORESOURCE_IO, 53 }, 54 { /* keyboard */ 55 .start = 0x60, 56 .end = 0x6f, 57 .name = "reserved", 58 .flags = IORESOURCE_BUSY | IORESOURCE_IO, 59 }, 60 { /* dma page reg */ 61 .start = 0x80, 62 .end = 0x8f, 63 .name = "reserved", 64 .flags = IORESOURCE_BUSY | IORESOURCE_IO, 65 }, 66 { /* dma2 */ 67 .start = 0xc0, 68 .end = 0xdf, 69 .name = "reserved", 70 .flags = IORESOURCE_BUSY | IORESOURCE_IO, 71 }, 72 }; 73 74 void __init plat_mem_setup(void) 75 { 76 int i; 77 78 _machine_restart = cobalt_machine_restart; 79 _machine_halt = cobalt_machine_halt; 80 pm_power_off = cobalt_machine_halt; 81 82 set_io_port_base(CKSEG1ADDR(GT_DEF_PCI0_IO_BASE)); 83 84 /* I/O port resource */ 85 ioport_resource.end = 0x01ffffff; 86 87 /* These resources have been reserved by VIA SuperI/O chip. */ 88 for (i = 0; i < ARRAY_SIZE(cobalt_reserved_resources); i++) 89 request_resource(&ioport_resource, cobalt_reserved_resources + i); 90 } 91 92 /* 93 * Prom init. We read our one and only communication with the firmware. 94 * Grab the amount of installed memory. 95 * Better boot loaders (CoLo) pass a command line too :-) 96 */ 97 98 void __init prom_init(void) 99 { 100 unsigned long memsz; 101 int argc, i; 102 char **argv; 103 104 memsz = fw_arg0 & 0x7fff0000; 105 argc = fw_arg0 & 0x0000ffff; 106 argv = (char **)fw_arg1; 107 108 for (i = 1; i < argc; i++) { 109 strlcat(arcs_cmdline, argv[i], COMMAND_LINE_SIZE); 110 if (i < (argc - 1)) 111 strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE); 112 } 113 114 add_memory_region(0x0, memsz, BOOT_MEM_RAM); 115 } 116 117 void __init prom_free_prom_memory(void) 118 { 119 /* Nothing to do! */ 120 } 121