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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 | 51 | /* sysctl */ |
d1fce9c1 RK |
52 | static int bcmring_arch_warm_reboot; /* do a warm reboot on hard reset */ |
53 | ||
54 | static void bcmring_restart(char mode, const char *cmd) | |
55 | { | |
56 | printk("arch_reset:%c %x\n", mode, bcmring_arch_warm_reboot); | |
57 | ||
58 | if (mode == 'h') { | |
59 | /* Reboot configured in proc entry */ | |
60 | if (bcmring_arch_warm_reboot) { | |
61 | printk("warm reset\n"); | |
62 | /* Issue Warm reset (do not reset ethernet switch, keep alive) */ | |
63 | chipcHw_reset(chipcHw_REG_SOFT_RESET_CHIP_WARM); | |
64 | } else { | |
65 | /* Force reset of everything */ | |
66 | printk("force reset\n"); | |
67 | chipcHw_reset(chipcHw_REG_SOFT_RESET_CHIP_SOFT); | |
68 | } | |
69 | } else { | |
70 | /* Force reset of everything */ | |
71 | printk("force reset\n"); | |
72 | chipcHw_reset(chipcHw_REG_SOFT_RESET_CHIP_SOFT); | |
73 | } | |
74 | } | |
4663712c LC |
75 | |
76 | static struct ctl_table_header *bcmring_sysctl_header; | |
77 | ||
78 | static struct ctl_table bcmring_sysctl_warm_reboot[] = { | |
79 | { | |
4663712c LC |
80 | .procname = "warm", |
81 | .data = &bcmring_arch_warm_reboot, | |
82 | .maxlen = sizeof(int), | |
83 | .mode = 0644, | |
6d456111 | 84 | .proc_handler = proc_dointvec}, |
4663712c LC |
85 | {} |
86 | }; | |
87 | ||
88 | static struct ctl_table bcmring_sysctl_reboot[] = { | |
89 | { | |
4663712c LC |
90 | .procname = "reboot", |
91 | .mode = 0555, | |
92 | .child = bcmring_sysctl_warm_reboot}, | |
93 | {} | |
94 | }; | |
95 | ||
266dead2 LHC |
96 | static struct resource nand_resource[] = { |
97 | [0] = { | |
98 | .start = MM_ADDR_IO_NAND, | |
99 | .end = MM_ADDR_IO_NAND + 0x1000 - 1, | |
100 | .flags = IORESOURCE_MEM, | |
101 | }, | |
102 | }; | |
103 | ||
4663712c LC |
104 | static struct platform_device nand_device = { |
105 | .name = "bcm-nand", | |
106 | .id = -1, | |
266dead2 LHC |
107 | .resource = nand_resource, |
108 | .num_resources = ARRAY_SIZE(nand_resource), | |
4663712c LC |
109 | }; |
110 | ||
87160113 WD |
111 | static struct resource pmu_resource = { |
112 | .start = IRQ_PMUIRQ, | |
113 | .end = IRQ_PMUIRQ, | |
114 | .flags = IORESOURCE_IRQ, | |
115 | }; | |
116 | ||
117 | static struct platform_device pmu_device = { | |
118 | .name = "arm-pmu", | |
119 | .id = ARM_PMU_DEVICE_CPU, | |
120 | .resource = &pmu_resource, | |
121 | .num_resources = 1, | |
122 | }; | |
123 | ||
124 | ||
4663712c LC |
125 | static struct platform_device *devices[] __initdata = { |
126 | &nand_device, | |
87160113 | 127 | &pmu_device, |
4663712c LC |
128 | }; |
129 | ||
130 | /**************************************************************************** | |
131 | * | |
132 | * Called from the customize_machine function in arch/arm/kernel/setup.c | |
133 | * | |
134 | * The customize_machine function is tagged as an arch_initcall | |
135 | * (see include/linux/init.h for the order that the various init sections | |
136 | * are called in. | |
137 | * | |
138 | *****************************************************************************/ | |
139 | static void __init bcmring_init_machine(void) | |
140 | { | |
141 | ||
142 | bcmring_sysctl_header = register_sysctl_table(bcmring_sysctl_reboot); | |
143 | ||
144 | /* Enable spread spectrum */ | |
145 | chipcHw_enableSpreadSpectrum(); | |
146 | ||
147 | platform_add_devices(devices, ARRAY_SIZE(devices)); | |
148 | ||
149 | bcmring_amba_init(); | |
150 | ||
151 | dma_init(); | |
152 | } | |
153 | ||
154 | /**************************************************************************** | |
155 | * | |
156 | * Called from setup_arch (in arch/arm/kernel/setup.c) to fixup any tags | |
157 | * passed in by the boot loader. | |
158 | * | |
159 | *****************************************************************************/ | |
160 | ||
0744a3ee RK |
161 | static void __init bcmring_fixup(struct tag *t, char **cmdline, |
162 | struct meminfo *mi) { | |
4663712c LC |
163 | #ifdef CONFIG_BLK_DEV_INITRD |
164 | printk(KERN_NOTICE "bcmring_fixup\n"); | |
165 | t->hdr.tag = ATAG_CORE; | |
166 | t->hdr.size = tag_size(tag_core); | |
167 | t->u.core.flags = 0; | |
168 | t->u.core.pagesize = PAGE_SIZE; | |
169 | t->u.core.rootdev = 31 << 8 | 0; | |
170 | t = tag_next(t); | |
171 | ||
172 | t->hdr.tag = ATAG_MEM; | |
173 | t->hdr.size = tag_size(tag_mem32); | |
174 | t->u.mem.start = CFG_GLOBAL_RAM_BASE; | |
175 | t->u.mem.size = CFG_GLOBAL_RAM_SIZE; | |
176 | ||
177 | t = tag_next(t); | |
178 | ||
179 | t->hdr.tag = ATAG_NONE; | |
180 | t->hdr.size = 0; | |
181 | #endif | |
182 | } | |
183 | ||
184 | /**************************************************************************** | |
185 | * | |
186 | * Machine Description | |
187 | * | |
188 | *****************************************************************************/ | |
189 | ||
190 | MACHINE_START(BCMRING, "BCMRING") | |
191 | /* Maintainer: Broadcom Corporation */ | |
4663712c LC |
192 | .fixup = bcmring_fixup, |
193 | .map_io = bcmring_map_io, | |
ede2e234 | 194 | .init_early = bcmring_init_early, |
4663712c LC |
195 | .init_irq = bcmring_init_irq, |
196 | .timer = &bcmring_timer, | |
ca43784d | 197 | .init_machine = bcmring_init_machine, |
d1fce9c1 | 198 | .restart = bcmring_restart, |
4663712c | 199 | MACHINE_END |