1 /*****************************************************************************
2 * Copyright 2003 - 2008 Broadcom Corporation. All rights reserved.
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").
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
13 *****************************************************************************/
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>
25 #include <linux/proc_fs.h>
26 #include <linux/sysctl.h>
29 #include <asm/setup.h>
30 #include <asm/mach-types.h>
31 #include <asm/mach/time.h>
33 #include <asm/mach/arch.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>
40 #include <cfg_global.h>
44 HW_DECLARE_SPINLOCK(arch)
45 HW_DECLARE_SPINLOCK(gpio)
46 #if defined(CONFIG_DEBUG_SPINLOCK)
47 EXPORT_SYMBOL(bcmring_gpio_reg_lock);
51 int bcmring_arch_warm_reboot; /* do a warm reboot on hard reset */
53 static struct ctl_table_header *bcmring_sysctl_header;
55 static struct ctl_table bcmring_sysctl_warm_reboot[] = {
58 .data = &bcmring_arch_warm_reboot,
59 .maxlen = sizeof(int),
61 .proc_handler = proc_dointvec},
65 static struct ctl_table bcmring_sysctl_reboot[] = {
69 .child = bcmring_sysctl_warm_reboot},
73 static struct platform_device nand_device = {
78 static struct platform_device *devices[] __initdata = {
82 /****************************************************************************
84 * Called from the customize_machine function in arch/arm/kernel/setup.c
86 * The customize_machine function is tagged as an arch_initcall
87 * (see include/linux/init.h for the order that the various init sections
90 *****************************************************************************/
91 static void __init bcmring_init_machine(void)
94 bcmring_sysctl_header = register_sysctl_table(bcmring_sysctl_reboot);
96 /* Enable spread spectrum */
97 chipcHw_enableSpreadSpectrum();
99 platform_add_devices(devices, ARRAY_SIZE(devices));
106 /****************************************************************************
108 * Called from setup_arch (in arch/arm/kernel/setup.c) to fixup any tags
109 * passed in by the boot loader.
111 *****************************************************************************/
113 static void __init bcmring_fixup(struct machine_desc *desc,
114 struct tag *t, char **cmdline, struct meminfo *mi) {
115 #ifdef CONFIG_BLK_DEV_INITRD
116 printk(KERN_NOTICE "bcmring_fixup\n");
117 t->hdr.tag = ATAG_CORE;
118 t->hdr.size = tag_size(tag_core);
120 t->u.core.pagesize = PAGE_SIZE;
121 t->u.core.rootdev = 31 << 8 | 0;
124 t->hdr.tag = ATAG_MEM;
125 t->hdr.size = tag_size(tag_mem32);
126 t->u.mem.start = CFG_GLOBAL_RAM_BASE;
127 t->u.mem.size = CFG_GLOBAL_RAM_SIZE;
131 t->hdr.tag = ATAG_NONE;
136 /****************************************************************************
138 * Machine Description
140 *****************************************************************************/
142 MACHINE_START(BCMRING, "BCMRING")
143 /* Maintainer: Broadcom Corporation */
144 .phys_io = MM_IO_START,
145 .io_pg_offst = (MM_IO_BASE >> 18) & 0xfffc,
146 .fixup = bcmring_fixup,
147 .map_io = bcmring_map_io,
148 .init_irq = bcmring_init_irq,
149 .timer = &bcmring_timer,
150 .init_machine = bcmring_init_machine