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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> | |
32 | ||
33 | #include <asm/mach/arch.h> | |
34 | #include <mach/dma.h> | |
35 | #include <mach/hardware.h> | |
36 | #include <mach/csp/mm_io.h> | |
37 | #include <mach/csp/chipcHw_def.h> | |
38 | #include <mach/csp/chipcHw_inline.h> | |
39 | ||
40 | #include <cfg_global.h> | |
41 | ||
42 | #include "core.h" | |
43 | ||
44 | HW_DECLARE_SPINLOCK(arch) | |
45 | HW_DECLARE_SPINLOCK(gpio) | |
46 | #if defined(CONFIG_DEBUG_SPINLOCK) | |
47 | EXPORT_SYMBOL(bcmring_gpio_reg_lock); | |
48 | #endif | |
49 | ||
4663712c LC |
50 | /* sysctl */ |
51 | int bcmring_arch_warm_reboot; /* do a warm reboot on hard reset */ | |
52 | ||
53 | static struct ctl_table_header *bcmring_sysctl_header; | |
54 | ||
55 | static struct ctl_table bcmring_sysctl_warm_reboot[] = { | |
56 | { | |
4663712c LC |
57 | .procname = "warm", |
58 | .data = &bcmring_arch_warm_reboot, | |
59 | .maxlen = sizeof(int), | |
60 | .mode = 0644, | |
6d456111 | 61 | .proc_handler = proc_dointvec}, |
4663712c LC |
62 | {} |
63 | }; | |
64 | ||
65 | static struct ctl_table bcmring_sysctl_reboot[] = { | |
66 | { | |
4663712c LC |
67 | .procname = "reboot", |
68 | .mode = 0555, | |
69 | .child = bcmring_sysctl_warm_reboot}, | |
70 | {} | |
71 | }; | |
72 | ||
266dead2 LHC |
73 | static struct resource nand_resource[] = { |
74 | [0] = { | |
75 | .start = MM_ADDR_IO_NAND, | |
76 | .end = MM_ADDR_IO_NAND + 0x1000 - 1, | |
77 | .flags = IORESOURCE_MEM, | |
78 | }, | |
79 | }; | |
80 | ||
4663712c LC |
81 | static struct platform_device nand_device = { |
82 | .name = "bcm-nand", | |
83 | .id = -1, | |
266dead2 LHC |
84 | .resource = nand_resource, |
85 | .num_resources = ARRAY_SIZE(nand_resource), | |
4663712c LC |
86 | }; |
87 | ||
88 | static struct platform_device *devices[] __initdata = { | |
89 | &nand_device, | |
90 | }; | |
91 | ||
92 | /**************************************************************************** | |
93 | * | |
94 | * Called from the customize_machine function in arch/arm/kernel/setup.c | |
95 | * | |
96 | * The customize_machine function is tagged as an arch_initcall | |
97 | * (see include/linux/init.h for the order that the various init sections | |
98 | * are called in. | |
99 | * | |
100 | *****************************************************************************/ | |
101 | static void __init bcmring_init_machine(void) | |
102 | { | |
103 | ||
104 | bcmring_sysctl_header = register_sysctl_table(bcmring_sysctl_reboot); | |
105 | ||
106 | /* Enable spread spectrum */ | |
107 | chipcHw_enableSpreadSpectrum(); | |
108 | ||
109 | platform_add_devices(devices, ARRAY_SIZE(devices)); | |
110 | ||
111 | bcmring_amba_init(); | |
112 | ||
113 | dma_init(); | |
114 | } | |
115 | ||
116 | /**************************************************************************** | |
117 | * | |
118 | * Called from setup_arch (in arch/arm/kernel/setup.c) to fixup any tags | |
119 | * passed in by the boot loader. | |
120 | * | |
121 | *****************************************************************************/ | |
122 | ||
123 | static void __init bcmring_fixup(struct machine_desc *desc, | |
124 | struct tag *t, char **cmdline, struct meminfo *mi) { | |
125 | #ifdef CONFIG_BLK_DEV_INITRD | |
126 | printk(KERN_NOTICE "bcmring_fixup\n"); | |
127 | t->hdr.tag = ATAG_CORE; | |
128 | t->hdr.size = tag_size(tag_core); | |
129 | t->u.core.flags = 0; | |
130 | t->u.core.pagesize = PAGE_SIZE; | |
131 | t->u.core.rootdev = 31 << 8 | 0; | |
132 | t = tag_next(t); | |
133 | ||
134 | t->hdr.tag = ATAG_MEM; | |
135 | t->hdr.size = tag_size(tag_mem32); | |
136 | t->u.mem.start = CFG_GLOBAL_RAM_BASE; | |
137 | t->u.mem.size = CFG_GLOBAL_RAM_SIZE; | |
138 | ||
139 | t = tag_next(t); | |
140 | ||
141 | t->hdr.tag = ATAG_NONE; | |
142 | t->hdr.size = 0; | |
143 | #endif | |
144 | } | |
145 | ||
146 | /**************************************************************************** | |
147 | * | |
148 | * Machine Description | |
149 | * | |
150 | *****************************************************************************/ | |
151 | ||
152 | MACHINE_START(BCMRING, "BCMRING") | |
153 | /* Maintainer: Broadcom Corporation */ | |
154 | .phys_io = MM_IO_START, | |
155 | .io_pg_offst = (MM_IO_BASE >> 18) & 0xfffc, | |
156 | .fixup = bcmring_fixup, | |
157 | .map_io = bcmring_map_io, | |
158 | .init_irq = bcmring_init_irq, | |
159 | .timer = &bcmring_timer, | |
160 | .init_machine = bcmring_init_machine | |
161 | MACHINE_END |