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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>
13#include <linux/pci.h>
14#include <linux/init.h>
Ralf Baechlefcdb27a2006-01-18 17:37:07 +000015#include <linux/pm.h>
Ralf Baechlec4ed38a2005-02-21 16:18:36 +000016#include <linux/serial.h>
17#include <linux/serial_core.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070018
19#include <asm/bootinfo.h>
20#include <asm/time.h>
21#include <asm/io.h>
22#include <asm/irq.h>
23#include <asm/processor.h>
24#include <asm/reboot.h>
25#include <asm/gt64120.h>
26
Ralf Baechle11ed6d52006-01-18 23:26:43 +000027#include <asm/mach-cobalt/cobalt.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070028
29extern void cobalt_machine_restart(char *command);
30extern void cobalt_machine_halt(void);
31extern void cobalt_machine_power_off(void);
Peter Hortone87ddde2006-02-12 17:10:25 +000032extern void cobalt_early_console(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -070033
34int cobalt_board_id;
35
Linus Torvalds1da177e2005-04-16 15:20:36 -070036const char *get_system_type(void)
37{
Ralf Baechlec4ed38a2005-02-21 16:18:36 +000038 switch (cobalt_board_id) {
39 case COBALT_BRD_ID_QUBE1:
40 return "Cobalt Qube";
41 case COBALT_BRD_ID_RAQ1:
42 return "Cobalt RaQ";
43 case COBALT_BRD_ID_QUBE2:
44 return "Cobalt Qube2";
45 case COBALT_BRD_ID_RAQ2:
46 return "Cobalt RaQ2";
47 }
Linus Torvalds1da177e2005-04-16 15:20:36 -070048 return "MIPS Cobalt";
49}
50
Ralf Baechle54d0a212006-07-09 21:38:56 +010051void __init plat_timer_setup(struct irqaction *irq)
Linus Torvalds1da177e2005-04-16 15:20:36 -070052{
Scott Ashcroft5c90d522006-10-06 16:54:54 +010053 /* Load timer value for HZ (TCLK is 50MHz) */
Yoichi Yuasa56ae5832006-10-14 00:25:04 +090054 GT_WRITE(GT_TC0_OFS, 50*1000*1000 / HZ);
Linus Torvalds1da177e2005-04-16 15:20:36 -070055
Ralf Baechlec4ed38a2005-02-21 16:18:36 +000056 /* Enable timer */
Yoichi Yuasa56ae5832006-10-14 00:25:04 +090057 GT_WRITE(GT_TC_CONTROL_OFS, GT_TC_CONTROL_ENTC0_MSK | GT_TC_CONTROL_SELTC0_MSK);
Linus Torvalds1da177e2005-04-16 15:20:36 -070058
Ralf Baechlec4ed38a2005-02-21 16:18:36 +000059 /* Register interrupt */
60 setup_irq(COBALT_GALILEO_IRQ, irq);
61
62 /* Enable interrupt */
Yoichi Yuasa56ae5832006-10-14 00:25:04 +090063 GT_WRITE(GT_INTRMASK_OFS, GT_INTR_T0EXP_MSK | GT_READ(GT_INTRMASK_OFS));
Linus Torvalds1da177e2005-04-16 15:20:36 -070064}
65
66extern struct pci_ops gt64111_pci_ops;
67
68static struct resource cobalt_mem_resource = {
Yoichi Yuasa56ae5832006-10-14 00:25:04 +090069 .start = GT_DEF_PCI0_MEM0_BASE,
70 .end = GT_DEF_PCI0_MEM0_BASE + GT_DEF_PCI0_MEM0_SIZE - 1,
Ralf Baechle5e46c3a2006-06-04 15:14:05 -070071 .name = "PCI memory",
72 .flags = IORESOURCE_MEM
Linus Torvalds1da177e2005-04-16 15:20:36 -070073};
74
75static struct resource cobalt_io_resource = {
Ralf Baechle5e46c3a2006-06-04 15:14:05 -070076 .start = 0x1000,
77 .end = 0xffff,
78 .name = "PCI I/O",
79 .flags = IORESOURCE_IO
Linus Torvalds1da177e2005-04-16 15:20:36 -070080};
81
82static struct resource cobalt_io_resources[] = {
Ralf Baechle5e46c3a2006-06-04 15:14:05 -070083 {
84 .start = 0x00,
85 .end = 0x1f,
86 .name = "dma1",
87 .flags = IORESOURCE_BUSY
88 }, {
89 .start = 0x40,
90 .end = 0x5f,
91 .name = "timer",
92 .flags = IORESOURCE_BUSY
93 }, {
94 .start = 0x60,
95 .end = 0x6f,
96 .name = "keyboard",
97 .flags = IORESOURCE_BUSY
98 }, {
99 .start = 0x80,
100 .end = 0x8f,
101 .name = "dma page reg",
102 .flags = IORESOURCE_BUSY
103 }, {
104 .start = 0xc0,
105 .end = 0xdf,
106 .name = "dma2",
107 .flags = IORESOURCE_BUSY
108 },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109};
110
111#define COBALT_IO_RESOURCES (sizeof(cobalt_io_resources)/sizeof(struct resource))
112
113static struct pci_controller cobalt_pci_controller = {
114 .pci_ops = &gt64111_pci_ops,
115 .mem_resource = &cobalt_mem_resource,
116 .mem_offset = 0,
117 .io_resource = &cobalt_io_resource,
Yoichi Yuasa56ae5832006-10-14 00:25:04 +0900118 .io_offset = 0 - GT_DEF_PCI0_IO_BASE,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119};
120
Ralf Baechle2925aba2006-06-18 01:32:22 +0100121void __init plat_mem_setup(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122{
Ralf Baechlec4ed38a2005-02-21 16:18:36 +0000123 static struct uart_port uart;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124 unsigned int devfn = PCI_DEVFN(COBALT_PCICONF_VIA, 0);
125 int i;
126
127 _machine_restart = cobalt_machine_restart;
128 _machine_halt = cobalt_machine_halt;
Ralf Baechlefcdb27a2006-01-18 17:37:07 +0000129 pm_power_off = cobalt_machine_power_off;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130
Yoichi Yuasa56ae5832006-10-14 00:25:04 +0900131 set_io_port_base(CKSEG1ADDR(GT_DEF_PCI0_IO_BASE));
Ralf Baechlec4ed38a2005-02-21 16:18:36 +0000132
133 /* I/O port resource must include UART and LCD/buttons */
134 ioport_resource.end = 0x0fffffff;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136 /* request I/O space for devices used on all i[345]86 PCs */
137 for (i = 0; i < COBALT_IO_RESOURCES; i++)
138 request_resource(&ioport_resource, cobalt_io_resources + i);
139
140 /* Read the cobalt id register out of the PCI config space */
141 PCI_CFG_SET(devfn, (VIA_COBALT_BRD_ID_REG & ~0x3));
Yoichi Yuasa56ae5832006-10-14 00:25:04 +0900142 cobalt_board_id = GT_READ(GT_PCI0_CFGDATA_OFS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143 cobalt_board_id >>= ((VIA_COBALT_BRD_ID_REG & 3) * 8);
144 cobalt_board_id = VIA_COBALT_BRD_REG_to_ID(cobalt_board_id);
145
Ralf Baechlec4ed38a2005-02-21 16:18:36 +0000146 printk("Cobalt board ID: %d\n", cobalt_board_id);
147
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148#ifdef CONFIG_PCI
149 register_pci_controller(&cobalt_pci_controller);
150#endif
Ralf Baechlec4ed38a2005-02-21 16:18:36 +0000151
152#ifdef CONFIG_SERIAL_8250
153 if (cobalt_board_id > COBALT_BRD_ID_RAQ1) {
154
Peter Hortone87ddde2006-02-12 17:10:25 +0000155#ifdef CONFIG_EARLY_PRINTK
156 cobalt_early_console();
157#endif
158
Ralf Baechlec4ed38a2005-02-21 16:18:36 +0000159 uart.line = 0;
160 uart.type = PORT_UNKNOWN;
161 uart.uartclk = 18432000;
162 uart.irq = COBALT_SERIAL_IRQ;
Russell King59a675b2006-02-05 10:52:29 +0000163 uart.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
Ralf Baechlec4ed38a2005-02-21 16:18:36 +0000164 uart.iobase = 0xc800000;
165 uart.iotype = UPIO_PORT;
166
167 early_serial_setup(&uart);
168 }
169#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170}
171
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172/*
173 * Prom init. We read our one and only communication with the firmware.
Ralf Baechlec4ed38a2005-02-21 16:18:36 +0000174 * Grab the amount of installed memory.
175 * Better boot loaders (CoLo) pass a command line too :-)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176 */
177
178void __init prom_init(void)
179{
Ralf Baechlec4ed38a2005-02-21 16:18:36 +0000180 int narg, indx, posn, nchr;
181 unsigned long memsz;
182 char **argv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183
184 mips_machgroup = MACH_GROUP_COBALT;
185
Ralf Baechlec4ed38a2005-02-21 16:18:36 +0000186 memsz = fw_arg0 & 0x7fff0000;
187 narg = fw_arg0 & 0x0000ffff;
188
189 if (narg) {
190 arcs_cmdline[0] = '\0';
191 argv = (char **) fw_arg1;
192 posn = 0;
193 for (indx = 1; indx < narg; ++indx) {
194 nchr = strlen(argv[indx]);
195 if (posn + 1 + nchr + 1 > sizeof(arcs_cmdline))
196 break;
197 if (posn)
198 arcs_cmdline[posn++] = ' ';
199 strcpy(arcs_cmdline + posn, argv[indx]);
200 posn += nchr;
201 }
202 }
203
204 add_memory_region(0x0, memsz, BOOT_MEM_RAM);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205}
206
207unsigned long __init prom_free_prom_memory(void)
208{
209 /* Nothing to do! */
210 return 0;
211}