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-rw-r--r--arch/mips/cobalt/setup.c150
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diff --git a/arch/mips/cobalt/setup.c b/arch/mips/cobalt/setup.c
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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 by Ralf Baechle (ralf@linux-mips.org)
9 * Copyright (C) 2001, 2002, 2003 by Liam Davies (ldavies@agile.tv)
10 *
11 */
12#include <linux/config.h>
13#include <linux/interrupt.h>
14#include <linux/pci.h>
15#include <linux/init.h>
16
17#include <asm/bootinfo.h>
18#include <asm/time.h>
19#include <asm/io.h>
20#include <asm/irq.h>
21#include <asm/processor.h>
22#include <asm/reboot.h>
23#include <asm/gt64120.h>
24
25#include <asm/cobalt/cobalt.h>
26
27extern void cobalt_machine_restart(char *command);
28extern void cobalt_machine_halt(void);
29extern void cobalt_machine_power_off(void);
30
31int cobalt_board_id;
32
33static char my_cmdline[CL_SIZE] = {
34 "console=ttyS0,115200 "
35#ifdef CONFIG_IP_PNP
36 "ip=on "
37#endif
38#ifdef CONFIG_ROOT_NFS
39 "root=/dev/nfs "
40#else
41 "root=/dev/hda1 "
42#endif
43 };
44
45const char *get_system_type(void)
46{
47 return "MIPS Cobalt";
48}
49
50static void __init cobalt_timer_setup(struct irqaction *irq)
51{
52 /* Load timer value for 150 Hz */
53 GALILEO_OUTL(500000, GT_TC0_OFS);
54
55 /* Register our timer interrupt */
56 setup_irq(COBALT_TIMER_IRQ, irq);
57
58 /* Enable timer ints */
59 GALILEO_OUTL((GALILEO_ENTC0 | GALILEO_SELTC0), GT_TC_CONTROL_OFS);
60 /* Unmask timer int */
61 GALILEO_OUTL(0x100, GT_INTRMASK_OFS);
62}
63
64extern struct pci_ops gt64111_pci_ops;
65
66static struct resource cobalt_mem_resource = {
67 "GT64111 PCI MEM", GT64111_IO_BASE, 0xffffffffUL, IORESOURCE_MEM
68};
69
70static struct resource cobalt_io_resource = {
71 "GT64111 IO MEM", 0x00001000UL, 0x0fffffffUL, IORESOURCE_IO
72};
73
74static struct resource cobalt_io_resources[] = {
75 { "dma1", 0x00, 0x1f, IORESOURCE_BUSY },
76 { "timer", 0x40, 0x5f, IORESOURCE_BUSY },
77 { "keyboard", 0x60, 0x6f, IORESOURCE_BUSY },
78 { "dma page reg", 0x80, 0x8f, IORESOURCE_BUSY },
79 { "dma2", 0xc0, 0xdf, IORESOURCE_BUSY },
80};
81
82#define COBALT_IO_RESOURCES (sizeof(cobalt_io_resources)/sizeof(struct resource))
83
84static struct pci_controller cobalt_pci_controller = {
85 .pci_ops = &gt64111_pci_ops,
86 .mem_resource = &cobalt_mem_resource,
87 .mem_offset = 0,
88 .io_resource = &cobalt_io_resource,
89 .io_offset = 0x00001000UL - GT64111_IO_BASE
90};
91
92static void __init cobalt_setup(void)
93{
94 unsigned int devfn = PCI_DEVFN(COBALT_PCICONF_VIA, 0);
95 int i;
96
97 _machine_restart = cobalt_machine_restart;
98 _machine_halt = cobalt_machine_halt;
99 _machine_power_off = cobalt_machine_power_off;
100
101 board_timer_setup = cobalt_timer_setup;
102
103 set_io_port_base(KSEG1ADDR(GT64111_IO_BASE));
104
105 /*
106 * This is a prom style console. We just poke at the
107 * UART to make it talk.
108 * Only use this console if you really screw up and can't
109 * get to the stage of setting up a real serial console.
110 */
111 /*ns16550_setup_console();*/
112
113 /* request I/O space for devices used on all i[345]86 PCs */
114 for (i = 0; i < COBALT_IO_RESOURCES; i++)
115 request_resource(&ioport_resource, cobalt_io_resources + i);
116
117 /* Read the cobalt id register out of the PCI config space */
118 PCI_CFG_SET(devfn, (VIA_COBALT_BRD_ID_REG & ~0x3));
119 cobalt_board_id = GALILEO_INL(GT_PCI0_CFGDATA_OFS);
120 cobalt_board_id >>= ((VIA_COBALT_BRD_ID_REG & 3) * 8);
121 cobalt_board_id = VIA_COBALT_BRD_REG_to_ID(cobalt_board_id);
122
123#ifdef CONFIG_PCI
124 register_pci_controller(&cobalt_pci_controller);
125#endif
126}
127
128early_initcall(cobalt_setup);
129
130/*
131 * Prom init. We read our one and only communication with the firmware.
132 * Grab the amount of installed memory
133 */
134
135void __init prom_init(void)
136{
137 int argc = fw_arg0;
138
139 strcpy(arcs_cmdline, my_cmdline);
140
141 mips_machgroup = MACH_GROUP_COBALT;
142
143 add_memory_region(0x0, argc & 0x7fffffff, BOOT_MEM_RAM);
144}
145
146unsigned long __init prom_free_prom_memory(void)
147{
148 /* Nothing to do! */
149 return 0;
150}