blob: b7f37d4982fab27b91213a83be7a178626b694cb [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Carsten Langgaard, carstenl@mips.com
3 * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
Dmitri Vorobiev52d65cf2008-04-01 02:03:24 +04004 * Copyright (C) 2008 Dmitri Vorobiev
Linus Torvalds1da177e2005-04-16 15:20:36 -07005 *
6 * This program is free software; you can distribute it and/or modify it
7 * under the terms of the GNU General Public License (Version 2) as
8 * published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * for more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
18 */
Dmitri Vorobiev54bf0382008-01-24 19:52:49 +030019#include <linux/cpu.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070020#include <linux/init.h>
21#include <linux/sched.h>
22#include <linux/ioport.h>
Dmitri Vorobiev54bf0382008-01-24 19:52:49 +030023#include <linux/irq.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#include <linux/pci.h>
Jon Smirl894673e2006-07-10 04:44:13 -070025#include <linux/screen_info.h>
Dmitri Vorobiev54bf0382008-01-24 19:52:49 +030026#include <linux/time.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070027
Linus Torvalds1da177e2005-04-16 15:20:36 -070028#include <asm/bootinfo.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070029#include <asm/mips-boards/generic.h>
30#include <asm/mips-boards/prom.h>
31#include <asm/mips-boards/malta.h>
32#include <asm/mips-boards/maltaint.h>
33#include <asm/dma.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070034#include <asm/traps.h>
35#ifdef CONFIG_VT
36#include <linux/console.h>
37#endif
38
Ralf Baechle39b8d522008-04-28 17:14:26 +010039extern void malta_be_init(void);
40extern int malta_be_handler(struct pt_regs *regs, int is_fixup);
41
Dmitri Vorobiev52d65cf2008-04-01 02:03:24 +040042static struct resource standard_io_resources[] = {
Dmitri Vorobiev4ca76512008-01-24 19:52:41 +030043 {
44 .name = "dma1",
45 .start = 0x00,
46 .end = 0x1f,
47 .flags = IORESOURCE_BUSY
48 },
49 {
50 .name = "timer",
51 .start = 0x40,
52 .end = 0x5f,
53 .flags = IORESOURCE_BUSY
54 },
55 {
56 .name = "keyboard",
57 .start = 0x60,
58 .end = 0x6f,
59 .flags = IORESOURCE_BUSY
60 },
61 {
62 .name = "dma page reg",
63 .start = 0x80,
64 .end = 0x8f,
65 .flags = IORESOURCE_BUSY
66 },
67 {
68 .name = "dma2",
69 .start = 0xc0,
70 .end = 0xdf,
71 .flags = IORESOURCE_BUSY
72 },
Linus Torvalds1da177e2005-04-16 15:20:36 -070073};
74
Linus Torvalds1da177e2005-04-16 15:20:36 -070075const char *get_system_type(void)
76{
77 return "MIPS Malta";
78}
79
Ralf Baechle79894c72007-05-16 17:54:08 +020080#if defined(CONFIG_MIPS_MT_SMTC)
81const char display_string[] = " SMTC LINUX ON MALTA ";
82#else
83const char display_string[] = " LINUX ON MALTA ";
84#endif /* CONFIG_MIPS_MT_SMTC */
85
Linus Torvalds1da177e2005-04-16 15:20:36 -070086#ifdef CONFIG_BLK_DEV_FD
Dmitri Vorobievef7645c2008-01-24 19:52:55 +030087static void __init fd_activate(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -070088{
89 /*
90 * Activate Floppy Controller in the SMSC FDC37M817 Super I/O
91 * Controller.
92 * Done by YAMON 2.00 onwards
93 */
94 /* Entering config state. */
95 SMSC_WRITE(SMSC_CONFIG_ENTER, SMSC_CONFIG_REG);
96
97 /* Activate floppy controller. */
98 SMSC_WRITE(SMSC_CONFIG_DEVNUM, SMSC_CONFIG_REG);
99 SMSC_WRITE(SMSC_CONFIG_DEVNUM_FLOPPY, SMSC_DATA_REG);
100 SMSC_WRITE(SMSC_CONFIG_ACTIVATE, SMSC_CONFIG_REG);
101 SMSC_WRITE(SMSC_CONFIG_ACTIVATE_ENABLE, SMSC_DATA_REG);
102
103 /* Exit config state. */
104 SMSC_WRITE(SMSC_CONFIG_EXIT, SMSC_CONFIG_REG);
105}
106#endif
107
Dmitri Vorobievf3a4ce92008-01-24 19:52:43 +0300108#ifdef CONFIG_BLK_DEV_IDE
109static void __init pci_clock_check(void)
110{
111 unsigned int __iomem *jmpr_p =
112 (unsigned int *) ioremap(MALTA_JMPRS_REG, sizeof(unsigned int));
113 int jmpr = (__raw_readl(jmpr_p) >> 2) & 0x07;
114 static const int pciclocks[] __initdata = {
115 33, 20, 25, 30, 12, 16, 37, 10
116 };
117 int pciclock = pciclocks[jmpr];
118 char *argptr = prom_getcmdline();
119
120 if (pciclock != 33 && !strstr(argptr, "idebus=")) {
121 printk(KERN_WARNING "WARNING: PCI clock is %dMHz, "
122 "setting idebus\n", pciclock);
123 argptr += strlen(argptr);
124 sprintf(argptr, " idebus=%d", pciclock);
125 if (pciclock < 20 || pciclock > 66)
126 printk(KERN_WARNING "WARNING: IDE timing "
127 "calculations will be incorrect\n");
128 }
129}
130#endif
131
Dmitri Vorobieva3829632008-01-24 19:52:44 +0300132#if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE)
133static void __init screen_info_setup(void)
134{
135 screen_info = (struct screen_info) {
136 .orig_x = 0,
137 .orig_y = 25,
138 .ext_mem_k = 0,
139 .orig_video_page = 0,
140 .orig_video_mode = 0,
141 .orig_video_cols = 80,
142 .unused2 = 0,
143 .orig_video_ega_bx = 0,
144 .unused3 = 0,
145 .orig_video_lines = 25,
146 .orig_video_isVGA = VIDEO_TYPE_VGAC,
147 .orig_video_points = 16
148 };
149}
150#endif
151
Dmitri Vorobiev750dc312008-01-24 19:52:56 +0300152static void __init bonito_quirks_setup(void)
153{
154 char *argptr;
155
156 argptr = prom_getcmdline();
157 if (strstr(argptr, "debug")) {
158 BONITO_BONGENCFG |= BONITO_BONGENCFG_DEBUGMODE;
159 printk(KERN_INFO "Enabled Bonito debug mode\n");
160 } else
161 BONITO_BONGENCFG &= ~BONITO_BONGENCFG_DEBUGMODE;
162
163#ifdef CONFIG_DMA_COHERENT
164 if (BONITO_PCICACHECTRL & BONITO_PCICACHECTRL_CPUCOH_PRES) {
165 BONITO_PCICACHECTRL |= BONITO_PCICACHECTRL_CPUCOH_EN;
166 printk(KERN_INFO "Enabled Bonito CPU coherency\n");
167
168 argptr = prom_getcmdline();
169 if (strstr(argptr, "iobcuncached")) {
170 BONITO_PCICACHECTRL &= ~BONITO_PCICACHECTRL_IOBCCOH_EN;
171 BONITO_PCIMEMBASECFG = BONITO_PCIMEMBASECFG &
172 ~(BONITO_PCIMEMBASECFG_MEMBASE0_CACHED |
173 BONITO_PCIMEMBASECFG_MEMBASE1_CACHED);
174 printk(KERN_INFO "Disabled Bonito IOBC coherency\n");
175 } else {
176 BONITO_PCICACHECTRL |= BONITO_PCICACHECTRL_IOBCCOH_EN;
177 BONITO_PCIMEMBASECFG |=
178 (BONITO_PCIMEMBASECFG_MEMBASE0_CACHED |
179 BONITO_PCIMEMBASECFG_MEMBASE1_CACHED);
180 printk(KERN_INFO "Enabled Bonito IOBC coherency\n");
181 }
182 } else
183 panic("Hardware DMA cache coherency not supported");
184#endif
185}
186
Ralf Baechle2925aba2006-06-18 01:32:22 +0100187void __init plat_mem_setup(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188{
189 unsigned int i;
190
Ralf Baechlec83cfc92005-06-21 13:56:30 +0000191 mips_pcibios_init();
192
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193 /* Request I/O space for devices used on the Malta board. */
194 for (i = 0; i < ARRAY_SIZE(standard_io_resources); i++)
195 request_resource(&ioport_resource, standard_io_resources+i);
196
197 /*
198 * Enable DMA channel 4 (cascade channel) in the PIIX4 south bridge.
199 */
200 enable_dma(4);
201
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202#ifdef CONFIG_DMA_COHERENT
Dmitri Vorobiev750dc312008-01-24 19:52:56 +0300203 if (mips_revision_sconid != MIPS_REVISION_SCON_BONITO)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204 panic("Hardware DMA cache coherency not supported");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205#endif
206
Dmitri Vorobiev750dc312008-01-24 19:52:56 +0300207 if (mips_revision_sconid == MIPS_REVISION_SCON_BONITO)
208 bonito_quirks_setup();
209
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210#ifdef CONFIG_BLK_DEV_IDE
Dmitri Vorobievf3a4ce92008-01-24 19:52:43 +0300211 pci_clock_check();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212#endif
Dmitri Vorobiev750dc312008-01-24 19:52:56 +0300213
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214#ifdef CONFIG_BLK_DEV_FD
Ralf Baechle49a89ef2007-10-11 23:46:15 +0100215 fd_activate();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216#endif
Dmitri Vorobiev750dc312008-01-24 19:52:56 +0300217
Dmitri Vorobieva3829632008-01-24 19:52:44 +0300218#if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE)
219 screen_info_setup();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220#endif
Ralf Baechle39b8d522008-04-28 17:14:26 +0100221
222 board_be_init = malta_be_init;
223 board_be_handler = malta_be_handler;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224}