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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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 *
Ralf Baechlefcdb27a2006-01-18 17:37:07 +00008 * Copyright (C) 1996, 1997, 2004, 05 by Ralf Baechle (ralf@linux-mips.org)
Linus Torvalds1da177e2005-04-16 15:20:36 -07009 * Copyright (C) 2001, 2002, 2003 by Liam Davies (ldavies@agile.tv)
10 *
11 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070012#include <linux/interrupt.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070013#include <linux/init.h>
Ralf Baechlefcdb27a2006-01-18 17:37:07 +000014#include <linux/pm.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070015
16#include <asm/bootinfo.h>
17#include <asm/time.h>
18#include <asm/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070019#include <asm/reboot.h>
20#include <asm/gt64120.h>
21
Yoichi Yuasacc50b672007-03-06 21:34:44 +090022#include <cobalt.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070023
24extern void cobalt_machine_restart(char *command);
25extern void cobalt_machine_halt(void);
26extern void cobalt_machine_power_off(void);
27
Linus Torvalds1da177e2005-04-16 15:20:36 -070028const char *get_system_type(void)
29{
Ralf Baechlec4ed38a2005-02-21 16:18:36 +000030 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 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070040 return "MIPS Cobalt";
41}
42
Ralf Baechle54d0a212006-07-09 21:38:56 +010043void __init plat_timer_setup(struct irqaction *irq)
Linus Torvalds1da177e2005-04-16 15:20:36 -070044{
Scott Ashcroft5c90d522006-10-06 16:54:54 +010045 /* Load timer value for HZ (TCLK is 50MHz) */
Yoichi Yuasa56ae5832006-10-14 00:25:04 +090046 GT_WRITE(GT_TC0_OFS, 50*1000*1000 / HZ);
Linus Torvalds1da177e2005-04-16 15:20:36 -070047
Ralf Baechlec4ed38a2005-02-21 16:18:36 +000048 /* Enable timer */
Yoichi Yuasa56ae5832006-10-14 00:25:04 +090049 GT_WRITE(GT_TC_CONTROL_OFS, GT_TC_CONTROL_ENTC0_MSK | GT_TC_CONTROL_SELTC0_MSK);
Linus Torvalds1da177e2005-04-16 15:20:36 -070050
Ralf Baechlec4ed38a2005-02-21 16:18:36 +000051 /* Register interrupt */
52 setup_irq(COBALT_GALILEO_IRQ, irq);
53
54 /* Enable interrupt */
Yoichi Yuasa56ae5832006-10-14 00:25:04 +090055 GT_WRITE(GT_INTRMASK_OFS, GT_INTR_T0EXP_MSK | GT_READ(GT_INTRMASK_OFS));
Linus Torvalds1da177e2005-04-16 15:20:36 -070056}
57
Yoichi Yuasa47d7c442007-03-01 22:50:25 +090058/*
59 * Cobalt doesn't have PS/2 keyboard/mouse interfaces,
60 * keyboard conntroller is never used.
61 * Also PCI-ISA bridge DMA contoroller is never used.
62 */
63static struct resource cobalt_reserved_resources[] = {
64 { /* dma1 */
Ralf Baechle5e46c3a2006-06-04 15:14:05 -070065 .start = 0x00,
66 .end = 0x1f,
Yoichi Yuasa47d7c442007-03-01 22:50:25 +090067 .name = "reserved",
68 .flags = IORESOURCE_BUSY | IORESOURCE_IO,
69 },
70 { /* keyboard */
Ralf Baechle5e46c3a2006-06-04 15:14:05 -070071 .start = 0x60,
72 .end = 0x6f,
Yoichi Yuasa47d7c442007-03-01 22:50:25 +090073 .name = "reserved",
74 .flags = IORESOURCE_BUSY | IORESOURCE_IO,
75 },
76 { /* dma page reg */
Ralf Baechle5e46c3a2006-06-04 15:14:05 -070077 .start = 0x80,
78 .end = 0x8f,
Yoichi Yuasa47d7c442007-03-01 22:50:25 +090079 .name = "reserved",
80 .flags = IORESOURCE_BUSY | IORESOURCE_IO,
81 },
82 { /* dma2 */
Ralf Baechle5e46c3a2006-06-04 15:14:05 -070083 .start = 0xc0,
84 .end = 0xdf,
Yoichi Yuasa47d7c442007-03-01 22:50:25 +090085 .name = "reserved",
86 .flags = IORESOURCE_BUSY | IORESOURCE_IO,
Ralf Baechle5e46c3a2006-06-04 15:14:05 -070087 },
Linus Torvalds1da177e2005-04-16 15:20:36 -070088};
89
Ralf Baechle2925aba2006-06-18 01:32:22 +010090void __init plat_mem_setup(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -070091{
Linus Torvalds1da177e2005-04-16 15:20:36 -070092 int i;
93
94 _machine_restart = cobalt_machine_restart;
95 _machine_halt = cobalt_machine_halt;
Ralf Baechlefcdb27a2006-01-18 17:37:07 +000096 pm_power_off = cobalt_machine_power_off;
Linus Torvalds1da177e2005-04-16 15:20:36 -070097
Yoichi Yuasa56ae5832006-10-14 00:25:04 +090098 set_io_port_base(CKSEG1ADDR(GT_DEF_PCI0_IO_BASE));
Ralf Baechlec4ed38a2005-02-21 16:18:36 +000099
Yoichi Yuasa0cfd5262007-02-09 12:16:24 +0900100 /* I/O port resource must include LCD/buttons */
Ralf Baechlec4ed38a2005-02-21 16:18:36 +0000101 ioport_resource.end = 0x0fffffff;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102
Yoichi Yuasa47d7c442007-03-01 22:50:25 +0900103 /* These resources have been reserved by VIA SuperI/O chip. */
104 for (i = 0; i < ARRAY_SIZE(cobalt_reserved_resources); i++)
105 request_resource(&ioport_resource, cobalt_reserved_resources + i);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106}
107
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108/*
109 * Prom init. We read our one and only communication with the firmware.
Ralf Baechlec4ed38a2005-02-21 16:18:36 +0000110 * Grab the amount of installed memory.
111 * Better boot loaders (CoLo) pass a command line too :-)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112 */
113
114void __init prom_init(void)
115{
Ralf Baechlec4ed38a2005-02-21 16:18:36 +0000116 int narg, indx, posn, nchr;
117 unsigned long memsz;
118 char **argv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119
120 mips_machgroup = MACH_GROUP_COBALT;
121
Ralf Baechlec4ed38a2005-02-21 16:18:36 +0000122 memsz = fw_arg0 & 0x7fff0000;
123 narg = fw_arg0 & 0x0000ffff;
124
125 if (narg) {
126 arcs_cmdline[0] = '\0';
127 argv = (char **) fw_arg1;
128 posn = 0;
129 for (indx = 1; indx < narg; ++indx) {
130 nchr = strlen(argv[indx]);
131 if (posn + 1 + nchr + 1 > sizeof(arcs_cmdline))
132 break;
133 if (posn)
134 arcs_cmdline[posn++] = ' ';
135 strcpy(arcs_cmdline + posn, argv[indx]);
136 posn += nchr;
137 }
138 }
139
140 add_memory_region(0x0, memsz, BOOT_MEM_RAM);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141}
142
Atsushi Nemotoc44e8d52006-12-30 00:43:59 +0900143void __init prom_free_prom_memory(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144{
145 /* Nothing to do! */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700146}