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4663712c LC |
1 | /***************************************************************************** |
2 | * Copyright 2003 - 2008 Broadcom Corporation. All rights reserved. | |
3 | * | |
4 | * Unless you and Broadcom execute a separate written software license | |
5 | * agreement governing use of this software, this software is licensed to you | |
6 | * under the terms of the GNU General Public License version 2, available at | |
7 | * http://www.broadcom.com/licenses/GPLv2.php (the "GPL"). | |
8 | * | |
9 | * Notwithstanding the above, under no circumstances may you combine this | |
10 | * software in any way with any other Broadcom software provided under a | |
11 | * license other than the GPL, without Broadcom's express prior written | |
12 | * consent. | |
13 | *****************************************************************************/ | |
14 | ||
15 | #include <linux/kernel.h> | |
16 | #include <linux/platform_device.h> | |
17 | #include <linux/types.h> | |
18 | #include <linux/sched.h> | |
19 | #include <linux/interrupt.h> | |
20 | #include <linux/init.h> | |
21 | #include <linux/errno.h> | |
22 | #include <linux/spinlock.h> | |
23 | #include <linux/module.h> | |
24 | ||
25 | #include <linux/proc_fs.h> | |
26 | #include <linux/sysctl.h> | |
27 | ||
28 | #include <asm/irq.h> | |
29 | #include <asm/setup.h> | |
30 | #include <asm/mach-types.h> | |
31 | #include <asm/mach/time.h> | |
87160113 | 32 | #include <asm/pmu.h> |
4663712c LC |
33 | |
34 | #include <asm/mach/arch.h> | |
35 | #include <mach/dma.h> | |
36 | #include <mach/hardware.h> | |
37 | #include <mach/csp/mm_io.h> | |
38 | #include <mach/csp/chipcHw_def.h> | |
39 | #include <mach/csp/chipcHw_inline.h> | |
40 | ||
41 | #include <cfg_global.h> | |
42 | ||
43 | #include "core.h" | |
44 | ||
45 | HW_DECLARE_SPINLOCK(arch) | |
46 | HW_DECLARE_SPINLOCK(gpio) | |
47 | #if defined(CONFIG_DEBUG_SPINLOCK) | |
48 | EXPORT_SYMBOL(bcmring_gpio_reg_lock); | |
49 | #endif | |
50 | ||
4663712c LC |
51 | /* sysctl */ |
52 | int bcmring_arch_warm_reboot; /* do a warm reboot on hard reset */ | |
53 | ||
54 | static struct ctl_table_header *bcmring_sysctl_header; | |
55 | ||
56 | static struct ctl_table bcmring_sysctl_warm_reboot[] = { | |
57 | { | |
4663712c LC |
58 | .procname = "warm", |
59 | .data = &bcmring_arch_warm_reboot, | |
60 | .maxlen = sizeof(int), | |
61 | .mode = 0644, | |
6d456111 | 62 | .proc_handler = proc_dointvec}, |
4663712c LC |
63 | {} |
64 | }; | |
65 | ||
66 | static struct ctl_table bcmring_sysctl_reboot[] = { | |
67 | { | |
4663712c LC |
68 | .procname = "reboot", |
69 | .mode = 0555, | |
70 | .child = bcmring_sysctl_warm_reboot}, | |
71 | {} | |
72 | }; | |
73 | ||
266dead2 LHC |
74 | static struct resource nand_resource[] = { |
75 | [0] = { | |
76 | .start = MM_ADDR_IO_NAND, | |
77 | .end = MM_ADDR_IO_NAND + 0x1000 - 1, | |
78 | .flags = IORESOURCE_MEM, | |
79 | }, | |
80 | }; | |
81 | ||
4663712c LC |
82 | static struct platform_device nand_device = { |
83 | .name = "bcm-nand", | |
84 | .id = -1, | |
266dead2 LHC |
85 | .resource = nand_resource, |
86 | .num_resources = ARRAY_SIZE(nand_resource), | |
4663712c LC |
87 | }; |
88 | ||
87160113 WD |
89 | static struct resource pmu_resource = { |
90 | .start = IRQ_PMUIRQ, | |
91 | .end = IRQ_PMUIRQ, | |
92 | .flags = IORESOURCE_IRQ, | |
93 | }; | |
94 | ||
95 | static struct platform_device pmu_device = { | |
96 | .name = "arm-pmu", | |
97 | .id = ARM_PMU_DEVICE_CPU, | |
98 | .resource = &pmu_resource, | |
99 | .num_resources = 1, | |
100 | }; | |
101 | ||
102 | ||
4663712c LC |
103 | static struct platform_device *devices[] __initdata = { |
104 | &nand_device, | |
87160113 | 105 | &pmu_device, |
4663712c LC |
106 | }; |
107 | ||
108 | /**************************************************************************** | |
109 | * | |
110 | * Called from the customize_machine function in arch/arm/kernel/setup.c | |
111 | * | |
112 | * The customize_machine function is tagged as an arch_initcall | |
113 | * (see include/linux/init.h for the order that the various init sections | |
114 | * are called in. | |
115 | * | |
116 | *****************************************************************************/ | |
117 | static void __init bcmring_init_machine(void) | |
118 | { | |
119 | ||
120 | bcmring_sysctl_header = register_sysctl_table(bcmring_sysctl_reboot); | |
121 | ||
122 | /* Enable spread spectrum */ | |
123 | chipcHw_enableSpreadSpectrum(); | |
124 | ||
125 | platform_add_devices(devices, ARRAY_SIZE(devices)); | |
126 | ||
127 | bcmring_amba_init(); | |
128 | ||
129 | dma_init(); | |
130 | } | |
131 | ||
132 | /**************************************************************************** | |
133 | * | |
134 | * Called from setup_arch (in arch/arm/kernel/setup.c) to fixup any tags | |
135 | * passed in by the boot loader. | |
136 | * | |
137 | *****************************************************************************/ | |
138 | ||
0744a3ee RK |
139 | static void __init bcmring_fixup(struct tag *t, char **cmdline, |
140 | struct meminfo *mi) { | |
4663712c LC |
141 | #ifdef CONFIG_BLK_DEV_INITRD |
142 | printk(KERN_NOTICE "bcmring_fixup\n"); | |
143 | t->hdr.tag = ATAG_CORE; | |
144 | t->hdr.size = tag_size(tag_core); | |
145 | t->u.core.flags = 0; | |
146 | t->u.core.pagesize = PAGE_SIZE; | |
147 | t->u.core.rootdev = 31 << 8 | 0; | |
148 | t = tag_next(t); | |
149 | ||
150 | t->hdr.tag = ATAG_MEM; | |
151 | t->hdr.size = tag_size(tag_mem32); | |
152 | t->u.mem.start = CFG_GLOBAL_RAM_BASE; | |
153 | t->u.mem.size = CFG_GLOBAL_RAM_SIZE; | |
154 | ||
155 | t = tag_next(t); | |
156 | ||
157 | t->hdr.tag = ATAG_NONE; | |
158 | t->hdr.size = 0; | |
159 | #endif | |
160 | } | |
161 | ||
162 | /**************************************************************************** | |
163 | * | |
164 | * Machine Description | |
165 | * | |
166 | *****************************************************************************/ | |
167 | ||
168 | MACHINE_START(BCMRING, "BCMRING") | |
169 | /* Maintainer: Broadcom Corporation */ | |
4663712c LC |
170 | .fixup = bcmring_fixup, |
171 | .map_io = bcmring_map_io, | |
ede2e234 | 172 | .init_early = bcmring_init_early, |
4663712c LC |
173 | .init_irq = bcmring_init_irq, |
174 | .timer = &bcmring_timer, | |
175 | .init_machine = bcmring_init_machine | |
176 | MACHINE_END |