2 * Carsten Langgaard, carstenl@mips.com
3 * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
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.
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
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.
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>
25 #include <linux/mtd/partitions.h>
26 #include <linux/mtd/physmap.h>
27 #include <linux/mtd/mtd.h>
28 #include <linux/mtd/map.h>
32 #include <asm/bootinfo.h>
34 #include <asm/mips-boards/generic.h>
35 #include <asm/mips-boards/prom.h>
36 #include <asm/mips-boards/malta.h>
37 #include <asm/mips-boards/maltaint.h>
40 #include <asm/traps.h>
42 #include <linux/console.h>
45 extern void mips_reboot_setup(void);
46 extern void mips_time_init(void);
47 extern unsigned long mips_rtc_get_time(void);
50 extern void kgdb_config(void);
53 struct resource standard_io_resources[] = {
54 { .name = "dma1", .start = 0x00, .end = 0x1f, .flags = IORESOURCE_BUSY },
55 { .name = "timer", .start = 0x40, .end = 0x5f, .flags = IORESOURCE_BUSY },
56 { .name = "keyboard", .start = 0x60, .end = 0x6f, .flags = IORESOURCE_BUSY },
57 { .name = "dma page reg", .start = 0x80, .end = 0x8f, .flags = IORESOURCE_BUSY },
58 { .name = "dma2", .start = 0xc0, .end = 0xdf, .flags = IORESOURCE_BUSY },
62 static struct mtd_partition malta_mtd_partitions[] = {
67 .mask_flags = MTD_WRITEABLE
75 .name = "Board Config",
78 .mask_flags = MTD_WRITEABLE
82 #define number_partitions (sizeof(malta_mtd_partitions)/sizeof(struct mtd_partition))
85 const char *get_system_type(void)
90 #ifdef CONFIG_BLK_DEV_FD
91 void __init fd_activate(void)
94 * Activate Floppy Controller in the SMSC FDC37M817 Super I/O
96 * Done by YAMON 2.00 onwards
98 /* Entering config state. */
99 SMSC_WRITE(SMSC_CONFIG_ENTER, SMSC_CONFIG_REG);
101 /* Activate floppy controller. */
102 SMSC_WRITE(SMSC_CONFIG_DEVNUM, SMSC_CONFIG_REG);
103 SMSC_WRITE(SMSC_CONFIG_DEVNUM_FLOPPY, SMSC_DATA_REG);
104 SMSC_WRITE(SMSC_CONFIG_ACTIVATE, SMSC_CONFIG_REG);
105 SMSC_WRITE(SMSC_CONFIG_ACTIVATE_ENABLE, SMSC_DATA_REG);
107 /* Exit config state. */
108 SMSC_WRITE(SMSC_CONFIG_EXIT, SMSC_CONFIG_REG);
112 void __init plat_mem_setup(void)
118 /* Request I/O space for devices used on the Malta board. */
119 for (i = 0; i < ARRAY_SIZE(standard_io_resources); i++)
120 request_resource(&ioport_resource, standard_io_resources+i);
123 * Enable DMA channel 4 (cascade channel) in the PIIX4 south bridge.
131 if ((mips_revision_corid == MIPS_REVISION_CORID_BONITO64) ||
132 (mips_revision_corid == MIPS_REVISION_CORID_CORE_20K) ||
133 (mips_revision_corid == MIPS_REVISION_CORID_CORE_EMUL_BON)) {
136 argptr = prom_getcmdline();
137 if (strstr(argptr, "debug")) {
138 BONITO_BONGENCFG |= BONITO_BONGENCFG_DEBUGMODE;
139 printk ("Enabled Bonito debug mode\n");
142 BONITO_BONGENCFG &= ~BONITO_BONGENCFG_DEBUGMODE;
144 #ifdef CONFIG_DMA_COHERENT
145 if (BONITO_PCICACHECTRL & BONITO_PCICACHECTRL_CPUCOH_PRES) {
146 BONITO_PCICACHECTRL |= BONITO_PCICACHECTRL_CPUCOH_EN;
147 printk("Enabled Bonito CPU coherency\n");
149 argptr = prom_getcmdline();
150 if (strstr(argptr, "iobcuncached")) {
151 BONITO_PCICACHECTRL &= ~BONITO_PCICACHECTRL_IOBCCOH_EN;
152 BONITO_PCIMEMBASECFG = BONITO_PCIMEMBASECFG &
153 ~(BONITO_PCIMEMBASECFG_MEMBASE0_CACHED |
154 BONITO_PCIMEMBASECFG_MEMBASE1_CACHED);
155 printk("Disabled Bonito IOBC coherency\n");
158 BONITO_PCICACHECTRL |= BONITO_PCICACHECTRL_IOBCCOH_EN;
159 BONITO_PCIMEMBASECFG |=
160 (BONITO_PCIMEMBASECFG_MEMBASE0_CACHED |
161 BONITO_PCIMEMBASECFG_MEMBASE1_CACHED);
162 printk("Enabled Bonito IOBC coherency\n");
166 panic("Hardware DMA cache coherency not supported");
170 #ifdef CONFIG_DMA_COHERENT
172 panic("Hardware DMA cache coherency not supported");
176 #ifdef CONFIG_BLK_DEV_IDE
177 /* Check PCI clock */
179 int jmpr = (*((volatile unsigned int *)ioremap(MALTA_JMPRS_REG, sizeof(unsigned int))) >> 2) & 0x07;
180 static const int pciclocks[] __initdata = {
181 33, 20, 25, 30, 12, 16, 37, 10
183 int pciclock = pciclocks[jmpr];
184 char *argptr = prom_getcmdline();
186 if (pciclock != 33 && !strstr (argptr, "idebus=")) {
187 printk("WARNING: PCI clock is %dMHz, setting idebus\n", pciclock);
188 argptr += strlen(argptr);
189 sprintf (argptr, " idebus=%d", pciclock);
190 if (pciclock < 20 || pciclock > 66)
191 printk ("WARNING: IDE timing calculations will be incorrect\n");
195 #ifdef CONFIG_BLK_DEV_FD
199 #if defined(CONFIG_VGA_CONSOLE)
200 screen_info = (struct screen_info) {
201 0, 25, /* orig-x, orig-y */
203 0, /* orig-video-page */
204 0, /* orig-video-mode */
205 80, /* orig-video-cols */
206 0,0,0, /* ega_ax, ega_bx, ega_cx */
207 25, /* orig-video-lines */
208 VIDEO_TYPE_VGAC, /* orig-video-isVGA */
209 16 /* orig-video-points */
216 * Support for MTD on Malta. Use the generic physmap driver
218 physmap_configure(0x1e000000, 0x400000, 4, NULL);
219 physmap_set_partitions(malta_mtd_partitions, number_partitions);
224 board_time_init = mips_time_init;
225 rtc_mips_get_time = mips_rtc_get_time;