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/setup.h> 21 #include <asm/gt64120.h> 22 23 #include <cobalt.h> 24 25 extern void cobalt_machine_restart(char *command); 26 extern void cobalt_machine_halt(void); 27 28 const char *get_system_type(void) 29 { 30 switch (cobalt_board_id) { 31 case COBALT_BRD_ID_QUBE1: 32 return "Cobalt Qube"; 33 case COBALT_BRD_ID_RAQ1: 34 return "Cobalt RaQ"; 35 case COBALT_BRD_ID_QUBE2: 36 return "Cobalt Qube2"; 37 case COBALT_BRD_ID_RAQ2: 38 return "Cobalt RaQ2"; 39 } 40 return "MIPS Cobalt"; 41 } 42 43 /* 44 * Cobalt doesn't have PS/2 keyboard/mouse interfaces, 45 * keyboard conntroller is never used. 46 * Also PCI-ISA bridge DMA contoroller is never used. 47 */ 48 static struct resource cobalt_reserved_resources[] = { 49 { /* dma1 */ 50 .start = 0x00, 51 .end = 0x1f, 52 .name = "reserved", 53 .flags = IORESOURCE_BUSY | IORESOURCE_IO, 54 }, 55 { /* keyboard */ 56 .start = 0x60, 57 .end = 0x6f, 58 .name = "reserved", 59 .flags = IORESOURCE_BUSY | IORESOURCE_IO, 60 }, 61 { /* dma page reg */ 62 .start = 0x80, 63 .end = 0x8f, 64 .name = "reserved", 65 .flags = IORESOURCE_BUSY | IORESOURCE_IO, 66 }, 67 { /* dma2 */ 68 .start = 0xc0, 69 .end = 0xdf, 70 .name = "reserved", 71 .flags = IORESOURCE_BUSY | IORESOURCE_IO, 72 }, 73 }; 74 75 void __init plat_mem_setup(void) 76 { 77 int i; 78 79 _machine_restart = cobalt_machine_restart; 80 _machine_halt = cobalt_machine_halt; 81 pm_power_off = cobalt_machine_halt; 82 83 set_io_port_base(CKSEG1ADDR(GT_DEF_PCI0_IO_BASE)); 84 85 /* I/O port resource */ 86 ioport_resource.end = 0x01ffffff; 87 88 /* These resources have been reserved by VIA SuperI/O chip. */ 89 for (i = 0; i < ARRAY_SIZE(cobalt_reserved_resources); i++) 90 request_resource(&ioport_resource, cobalt_reserved_resources + i); 91 } 92 93 /* 94 * Prom init. We read our one and only communication with the firmware. 95 * Grab the amount of installed memory. 96 * Better boot loaders (CoLo) pass a command line too :-) 97 */ 98 99 void __init prom_init(void) 100 { 101 unsigned long memsz; 102 int argc, i; 103 char **argv; 104 105 memsz = fw_arg0 & 0x7fff0000; 106 argc = fw_arg0 & 0x0000ffff; 107 argv = (char **)fw_arg1; 108 109 for (i = 1; i < argc; i++) { 110 strlcat(arcs_cmdline, argv[i], COMMAND_LINE_SIZE); 111 if (i < (argc - 1)) 112 strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE); 113 } 114 115 add_memory_region(0x0, memsz, BOOT_MEM_RAM); 116 117 setup_8250_early_printk_port(CKSEG1ADDR(0x1c800000), 0, 0); 118 } 119 120 void __init prom_free_prom_memory(void) 121 { 122 /* Nothing to do! */ 123 } 124