Pull sbs into release branch
[linux-2.6] / arch / mips / cobalt / setup.c
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/interrupt.h>
13 #include <linux/init.h>
14 #include <linux/pm.h>
15
16 #include <asm/bootinfo.h>
17 #include <asm/time.h>
18 #include <asm/io.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 extern void cobalt_machine_power_off(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 void __init plat_timer_setup(struct irqaction *irq)
44 {
45         /* Load timer value for HZ (TCLK is 50MHz) */
46         GT_WRITE(GT_TC0_OFS, 50*1000*1000 / HZ);
47
48         /* Enable timer */
49         GT_WRITE(GT_TC_CONTROL_OFS, GT_TC_CONTROL_ENTC0_MSK | GT_TC_CONTROL_SELTC0_MSK);
50
51         /* Register interrupt */
52         setup_irq(COBALT_GALILEO_IRQ, irq);
53
54         /* Enable interrupt */
55         GT_WRITE(GT_INTRMASK_OFS, GT_INTR_T0EXP_MSK | GT_READ(GT_INTRMASK_OFS));
56 }
57
58 /*
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  */
63 static struct resource cobalt_reserved_resources[] = {
64         {       /* dma1 */
65                 .start  = 0x00,
66                 .end    = 0x1f,
67                 .name   = "reserved",
68                 .flags  = IORESOURCE_BUSY | IORESOURCE_IO,
69         },
70         {       /* keyboard */
71                 .start  = 0x60,
72                 .end    = 0x6f,
73                 .name   = "reserved",
74                 .flags  = IORESOURCE_BUSY | IORESOURCE_IO,
75         },
76         {       /* dma page reg */
77                 .start  = 0x80,
78                 .end    = 0x8f,
79                 .name   = "reserved",
80                 .flags  = IORESOURCE_BUSY | IORESOURCE_IO,
81         },
82         {       /* dma2 */
83                 .start  = 0xc0,
84                 .end    = 0xdf,
85                 .name   = "reserved",
86                 .flags  = IORESOURCE_BUSY | IORESOURCE_IO,
87         },
88 };
89
90 void __init plat_mem_setup(void)
91 {
92         int i;
93
94         _machine_restart = cobalt_machine_restart;
95         _machine_halt = cobalt_machine_halt;
96         pm_power_off = cobalt_machine_power_off;
97
98         set_io_port_base(CKSEG1ADDR(GT_DEF_PCI0_IO_BASE));
99
100         /* I/O port resource must include LCD/buttons */
101         ioport_resource.end = 0x0fffffff;
102
103         /* 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);
106 }
107
108 /*
109  * Prom init. We read our one and only communication with the firmware.
110  * Grab the amount of installed memory.
111  * Better boot loaders (CoLo) pass a command line too :-)
112  */
113
114 void __init prom_init(void)
115 {
116         int narg, indx, posn, nchr;
117         unsigned long memsz;
118         char **argv;
119
120         mips_machgroup = MACH_GROUP_COBALT;
121
122         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);
141 }
142
143 void __init prom_free_prom_memory(void)
144 {
145         /* Nothing to do! */
146 }