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
fixup_p720t(struct machine_desc * desc,struct tag * tag,char ** cmdline,struct meminfo * mi)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
p720t_map_io(void)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
124