Root/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 */
44static 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
58static void __init
59fixup_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
84static void __init p720t_map_io(void)
85{
86    clps711x_map_io();
87    iotable_init(p720t_io_desc, ARRAY_SIZE(p720t_io_desc));
88}
89
90MACHINE_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,
97MACHINE_END
98
99static 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

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