cefbce0480b95e0c6566a513f32c17ac030691b4
[linux-2.6.git] / arch / arm / mach-clps711x / p720t.c
1 /*
2  *  linux/arch/arm/mach-clps711x/p720t.c
3  *
4  *  Copyright (C) 2000-2001 Deep Blue Solutions Ltd
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
19  */
20 #include <linux/kernel.h>
21 #include <linux/init.h>
22 #include <linux/types.h>
23 #include <linux/string.h>
24 #include <linux/mm.h>
25 #include <linux/io.h>
26
27 #include <mach/hardware.h>
28 #include <asm/pgtable.h>
29 #include <asm/page.h>
30 #include <asm/setup.h>
31 #include <asm/sizes.h>
32 #include <asm/mach-types.h>
33 #include <asm/mach/arch.h>
34 #include <asm/mach/map.h>
35 #include <mach/syspld.h>
36
37 #include "common.h"
38
39 /*
40  * Map the P720T system PLD.  It occupies two address spaces:
41  *  SYSPLD_PHYS_BASE and SYSPLD_PHYS_BASE + 0x00400000
42  * We map both here.
43  */
44 static struct map_desc p720t_io_desc[] __initdata = {
45         {
46                 .virtual        = SYSPLD_VIRT_BASE,
47                 .pfn            = __phys_to_pfn(SYSPLD_PHYS_BASE),
48                 .length         = SZ_1M,
49                 .type           = MT_DEVICE
50         }, {
51                 .virtual        = 0xfe400000,
52                 .pfn            = __phys_to_pfn(0x10400000),
53                 .length         = SZ_1M,
54                 .type           = MT_DEVICE
55         }
56 };
57
58 static void __init
59 fixup_p720t(struct machine_desc *desc, struct tag *tag,
60             char **cmdline, struct meminfo *mi)
61 {
62         /*
63          * Our bootloader doesn't setup any tags (yet).
64          */
65         if (tag->hdr.tag != ATAG_CORE) {
66                 tag->hdr.tag = ATAG_CORE;
67                 tag->hdr.size = tag_size(tag_core);
68                 tag->u.core.flags = 0;
69                 tag->u.core.pagesize = PAGE_SIZE;
70                 tag->u.core.rootdev = 0x0100;
71
72                 tag = tag_next(tag);
73                 tag->hdr.tag = ATAG_MEM;
74                 tag->hdr.size = tag_size(tag_mem32);
75                 tag->u.mem.size = 4096;
76                 tag->u.mem.start = PHYS_OFFSET;
77
78                 tag = tag_next(tag);
79                 tag->hdr.tag = ATAG_NONE;
80                 tag->hdr.size = 0;
81         }
82 }
83
84 static void __init p720t_map_io(void)
85 {
86         clps711x_map_io();
87         iotable_init(p720t_io_desc, ARRAY_SIZE(p720t_io_desc));
88 }
89
90 MACHINE_START(P720T, "ARM-Prospector720T")
91         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
92         .boot_params    = 0xc0000100,
93         .fixup          = fixup_p720t,
94         .map_io         = p720t_map_io,
95         .init_irq       = clps711x_init_irq,
96         .timer          = &clps711x_timer,
97 MACHINE_END
98
99 static int p720t_hw_init(void)
100 {
101         /*
102          * Power down as much as possible in case we don't
103          * have the drivers loaded.
104          */
105         PLD_LCDEN = 0;
106         PLD_PWR  &= ~(PLD_S4_ON|PLD_S3_ON|PLD_S2_ON|PLD_S1_ON);
107
108         PLD_KBD   = 0;
109         PLD_IO    = 0;
110         PLD_IRDA  = 0;
111         PLD_CODEC = 0;
112         PLD_TCH   = 0;
113         PLD_SPI   = 0;
114 #ifndef CONFIG_DEBUG_LL
115         PLD_COM2  = 0;
116         PLD_COM1  = 0;
117 #endif
118
119         return 0;
120 }
121
122 __initcall(p720t_hw_init);
123