Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[linux-2.6] / arch / mips / mips-boards / malta / malta_setup.c
1 /*
2  * Carsten Langgaard, carstenl@mips.com
3  * Copyright (C) 2000 MIPS Technologies, Inc.  All rights reserved.
4  *
5  *  This program is free software; you can distribute it and/or modify it
6  *  under the terms of the GNU General Public License (Version 2) as
7  *  published by the Free Software Foundation.
8  *
9  *  This program is distributed in the hope it will be useful, but WITHOUT
10  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  *  for more details.
13  *
14  *  You should have received a copy of the GNU General Public License along
15  *  with this program; if not, write to the Free Software Foundation, Inc.,
16  *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
17  */
18 #include <linux/init.h>
19 #include <linux/sched.h>
20 #include <linux/ioport.h>
21 #include <linux/pci.h>
22 #include <linux/screen_info.h>
23
24 #include <asm/cpu.h>
25 #include <asm/bootinfo.h>
26 #include <asm/irq.h>
27 #include <asm/mips-boards/generic.h>
28 #include <asm/mips-boards/prom.h>
29 #include <asm/mips-boards/malta.h>
30 #include <asm/mips-boards/maltaint.h>
31 #include <asm/dma.h>
32 #include <asm/time.h>
33 #include <asm/traps.h>
34 #ifdef CONFIG_VT
35 #include <linux/console.h>
36 #endif
37
38 extern void mips_reboot_setup(void);
39 extern unsigned long mips_rtc_get_time(void);
40
41 #ifdef CONFIG_KGDB
42 extern void kgdb_config(void);
43 #endif
44
45 struct resource standard_io_resources[] = {
46         { .name = "dma1", .start = 0x00, .end = 0x1f, .flags = IORESOURCE_BUSY },
47         { .name = "timer", .start = 0x40, .end = 0x5f, .flags = IORESOURCE_BUSY },
48         { .name = "keyboard", .start = 0x60, .end = 0x6f, .flags = IORESOURCE_BUSY },
49         { .name = "dma page reg", .start = 0x80, .end = 0x8f, .flags = IORESOURCE_BUSY },
50         { .name = "dma2", .start = 0xc0, .end = 0xdf, .flags = IORESOURCE_BUSY },
51 };
52
53 const char *get_system_type(void)
54 {
55         return "MIPS Malta";
56 }
57
58 #if defined(CONFIG_MIPS_MT_SMTC)
59 const char display_string[] = "       SMTC LINUX ON MALTA       ";
60 #else
61 const char display_string[] = "        LINUX ON MALTA       ";
62 #endif /* CONFIG_MIPS_MT_SMTC */
63
64 #ifdef CONFIG_BLK_DEV_FD
65 void __init fd_activate(void)
66 {
67         /*
68          * Activate Floppy Controller in the SMSC FDC37M817 Super I/O
69          * Controller.
70          * Done by YAMON 2.00 onwards
71          */
72         /* Entering config state. */
73         SMSC_WRITE(SMSC_CONFIG_ENTER, SMSC_CONFIG_REG);
74
75         /* Activate floppy controller. */
76         SMSC_WRITE(SMSC_CONFIG_DEVNUM, SMSC_CONFIG_REG);
77         SMSC_WRITE(SMSC_CONFIG_DEVNUM_FLOPPY, SMSC_DATA_REG);
78         SMSC_WRITE(SMSC_CONFIG_ACTIVATE, SMSC_CONFIG_REG);
79         SMSC_WRITE(SMSC_CONFIG_ACTIVATE_ENABLE, SMSC_DATA_REG);
80
81         /* Exit config state. */
82         SMSC_WRITE(SMSC_CONFIG_EXIT, SMSC_CONFIG_REG);
83 }
84 #endif
85
86 void __init plat_mem_setup(void)
87 {
88         unsigned int i;
89
90         mips_pcibios_init();
91
92         /* Request I/O space for devices used on the Malta board. */
93         for (i = 0; i < ARRAY_SIZE(standard_io_resources); i++)
94                 request_resource(&ioport_resource, standard_io_resources+i);
95
96         /*
97          * Enable DMA channel 4 (cascade channel) in the PIIX4 south bridge.
98          */
99         enable_dma(4);
100
101 #ifdef CONFIG_KGDB
102         kgdb_config();
103 #endif
104
105         if (mips_revision_sconid == MIPS_REVISION_SCON_BONITO) {
106                 char *argptr;
107
108                 argptr = prom_getcmdline();
109                 if (strstr(argptr, "debug")) {
110                         BONITO_BONGENCFG |= BONITO_BONGENCFG_DEBUGMODE;
111                         printk("Enabled Bonito debug mode\n");
112                 }
113                 else
114                         BONITO_BONGENCFG &= ~BONITO_BONGENCFG_DEBUGMODE;
115
116 #ifdef CONFIG_DMA_COHERENT
117                 if (BONITO_PCICACHECTRL & BONITO_PCICACHECTRL_CPUCOH_PRES) {
118                         BONITO_PCICACHECTRL |= BONITO_PCICACHECTRL_CPUCOH_EN;
119                         printk("Enabled Bonito CPU coherency\n");
120
121                         argptr = prom_getcmdline();
122                         if (strstr(argptr, "iobcuncached")) {
123                                 BONITO_PCICACHECTRL &= ~BONITO_PCICACHECTRL_IOBCCOH_EN;
124                                 BONITO_PCIMEMBASECFG = BONITO_PCIMEMBASECFG &
125                                         ~(BONITO_PCIMEMBASECFG_MEMBASE0_CACHED |
126                                           BONITO_PCIMEMBASECFG_MEMBASE1_CACHED);
127                                 printk("Disabled Bonito IOBC coherency\n");
128                         }
129                         else {
130                                 BONITO_PCICACHECTRL |= BONITO_PCICACHECTRL_IOBCCOH_EN;
131                                 BONITO_PCIMEMBASECFG |=
132                                         (BONITO_PCIMEMBASECFG_MEMBASE0_CACHED |
133                                          BONITO_PCIMEMBASECFG_MEMBASE1_CACHED);
134                                 printk("Enabled Bonito IOBC coherency\n");
135                         }
136                 }
137                 else
138                         panic("Hardware DMA cache coherency not supported");
139
140 #endif
141         }
142 #ifdef CONFIG_DMA_COHERENT
143         else {
144                 panic("Hardware DMA cache coherency not supported");
145         }
146 #endif
147
148 #ifdef CONFIG_BLK_DEV_IDE
149         /* Check PCI clock */
150         {
151                 unsigned int __iomem *jmpr_p = (unsigned int *) ioremap(MALTA_JMPRS_REG, sizeof(unsigned int));
152                 int jmpr = (readw(jmpr_p) >> 2) & 0x07;
153                 static const int pciclocks[] __initdata = {
154                         33, 20, 25, 30, 12, 16, 37, 10
155                 };
156                 int pciclock = pciclocks[jmpr];
157                 char *argptr = prom_getcmdline();
158
159                 if (pciclock != 33 && !strstr (argptr, "idebus=")) {
160                         printk("WARNING: PCI clock is %dMHz, setting idebus\n", pciclock);
161                         argptr += strlen(argptr);
162                         sprintf(argptr, " idebus=%d", pciclock);
163                         if (pciclock < 20 || pciclock > 66)
164                                 printk("WARNING: IDE timing calculations will be incorrect\n");
165                 }
166         }
167 #endif
168 #ifdef CONFIG_BLK_DEV_FD
169         fd_activate();
170 #endif
171 #ifdef CONFIG_VT
172 #if defined(CONFIG_VGA_CONSOLE)
173         screen_info = (struct screen_info) {
174                 0, 25,                  /* orig-x, orig-y */
175                 0,                      /* unused */
176                 0,                      /* orig-video-page */
177                 0,                      /* orig-video-mode */
178                 80,                     /* orig-video-cols */
179                 0, 0, 0,                /* ega_ax, ega_bx, ega_cx */
180                 25,                     /* orig-video-lines */
181                 VIDEO_TYPE_VGAC,        /* orig-video-isVGA */
182                 16                      /* orig-video-points */
183         };
184 #endif
185 #endif
186         mips_reboot_setup();
187 }