2 * linux/arch/arm/mach-clps711x/p720t.c
4 * Copyright (C) 2000-2001 Deep Blue Solutions Ltd
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.
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.
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
20 #include <linux/kernel.h>
21 #include <linux/init.h>
22 #include <linux/types.h>
23 #include <linux/string.h>
26 #include <linux/slab.h>
27 #include <linux/leds.h>
29 #include <mach/hardware.h>
30 #include <asm/pgtable.h>
32 #include <asm/setup.h>
33 #include <asm/sizes.h>
34 #include <asm/mach-types.h>
35 #include <asm/mach/arch.h>
36 #include <asm/mach/map.h>
37 #include <mach/syspld.h>
39 #include <asm/hardware/clps7111.h>
44 * Map the P720T system PLD. It occupies two address spaces:
45 * SYSPLD_PHYS_BASE and SYSPLD_PHYS_BASE + 0x00400000
48 static struct map_desc p720t_io_desc[] __initdata = {
50 .virtual = SYSPLD_VIRT_BASE,
51 .pfn = __phys_to_pfn(SYSPLD_PHYS_BASE),
55 .virtual = 0xfe400000,
56 .pfn = __phys_to_pfn(0x10400000),
63 fixup_p720t(struct tag *tag, char **cmdline, struct meminfo *mi)
66 * Our bootloader doesn't setup any tags (yet).
68 if (tag->hdr.tag != ATAG_CORE) {
69 tag->hdr.tag = ATAG_CORE;
70 tag->hdr.size = tag_size(tag_core);
71 tag->u.core.flags = 0;
72 tag->u.core.pagesize = PAGE_SIZE;
73 tag->u.core.rootdev = 0x0100;
76 tag->hdr.tag = ATAG_MEM;
77 tag->hdr.size = tag_size(tag_mem32);
78 tag->u.mem.size = 4096;
79 tag->u.mem.start = PHYS_OFFSET;
82 tag->hdr.tag = ATAG_NONE;
87 static void __init p720t_map_io(void)
90 iotable_init(p720t_io_desc, ARRAY_SIZE(p720t_io_desc));
93 static void __init p720t_init_early(void)
96 * Power down as much as possible in case we don't
97 * have the drivers loaded.
100 PLD_PWR &= ~(PLD_S4_ON|PLD_S3_ON|PLD_S2_ON|PLD_S1_ON);
108 if (!IS_ENABLED(CONFIG_DEBUG_LL)) {
115 * LED controled by CPLD
117 #if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
118 static void p720t_led_set(struct led_classdev *cdev,
119 enum led_brightness b)
121 u8 reg = clps_readb(PDDR);
128 clps_writeb(reg, PDDR);
131 static enum led_brightness p720t_led_get(struct led_classdev *cdev)
133 u8 reg = clps_readb(PDDR);
135 return (reg & 0x1) ? LED_FULL : LED_OFF;
138 static int __init p720t_leds_init(void)
141 struct led_classdev *cdev;
144 if (!machine_is_p720t())
147 cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
151 cdev->name = "p720t:0";
152 cdev->brightness_set = p720t_led_set;
153 cdev->brightness_get = p720t_led_get;
154 cdev->default_trigger = "heartbeat";
156 ret = led_classdev_register(NULL, cdev);
166 * Since we may have triggers on any subsystem, defer registration
167 * until after subsystem_init.
169 fs_initcall(p720t_leds_init);
172 MACHINE_START(P720T, "ARM-Prospector720T")
173 /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
174 .atag_offset = 0x100,
175 .fixup = fixup_p720t,
176 .init_early = p720t_init_early,
177 .map_io = p720t_map_io,
178 .init_irq = clps711x_init_irq,
179 .timer = &clps711x_timer,
180 .restart = clps711x_restart,