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/*****************************************************************************
* Copyright 2003 - 2008 Broadcom Corporation. All rights reserved.
*
* Unless you and Broadcom execute a separate written software license
* agreement governing use of this software, this software is licensed to you
* under the terms of the GNU General Public License version 2, available at
* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
*
* Notwithstanding the above, under no circumstances may you combine this
* software in any way with any other Broadcom software provided under a
* license other than the GPL, without Broadcom's express prior written
* consent.
*****************************************************************************/
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/spinlock.h>
#include <linux/module.h>
#include <linux/proc_fs.h>
#include <linux/sysctl.h>
#include <asm/irq.h>
#include <asm/setup.h>
#include <asm/mach-types.h>
#include <asm/mach/time.h>
#include <asm/pmu.h>
#include <asm/mach/arch.h>
#include <mach/dma.h>
#include <mach/hardware.h>
#include <mach/csp/mm_io.h>
#include <mach/csp/chipcHw_def.h>
#include <mach/csp/chipcHw_inline.h>
#include <mach/cfg_global.h>
#include "core.h"
HW_DECLARE_SPINLOCK(arch)
HW_DECLARE_SPINLOCK(gpio)
#if defined(CONFIG_DEBUG_SPINLOCK)
EXPORT_SYMBOL(bcmring_gpio_reg_lock);
#endif
/* sysctl */
static int bcmring_arch_warm_reboot; /* do a warm reboot on hard reset */
static void bcmring_restart(char mode, const char *cmd)
{
printk("arch_reset:%c %x\n", mode, bcmring_arch_warm_reboot);
if (mode == 'h') {
/* Reboot configured in proc entry */
if (bcmring_arch_warm_reboot) {
printk("warm reset\n");
/* Issue Warm reset (do not reset ethernet switch, keep alive) */
chipcHw_reset(chipcHw_REG_SOFT_RESET_CHIP_WARM);
} else {
/* Force reset of everything */
printk("force reset\n");
chipcHw_reset(chipcHw_REG_SOFT_RESET_CHIP_SOFT);
}
} else {
/* Force reset of everything */
printk("force reset\n");
chipcHw_reset(chipcHw_REG_SOFT_RESET_CHIP_SOFT);
}
}
static struct ctl_table_header *bcmring_sysctl_header;
static struct ctl_table bcmring_sysctl_warm_reboot[] = {
{
.procname = "warm",
.data = &bcmring_arch_warm_reboot,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec},
{}
};
static struct ctl_table bcmring_sysctl_reboot[] = {
{
.procname = "reboot",
.mode = 0555,
.child = bcmring_sysctl_warm_reboot},
{}
};
static struct resource nand_resource[] = {
[0] = {
.start = MM_ADDR_IO_NAND,
.end = MM_ADDR_IO_NAND + 0x1000 - 1,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device nand_device = {
.name = "bcm-nand",
.id = -1,
.resource = nand_resource,
.num_resources = ARRAY_SIZE(nand_resource),
};
static struct resource pmu_resource = {
.start = IRQ_PMUIRQ,
.end = IRQ_PMUIRQ,
.flags = IORESOURCE_IRQ,
};
static struct platform_device pmu_device = {
.name = "arm-pmu",
.id = ARM_PMU_DEVICE_CPU,
.resource = &pmu_resource,
.num_resources = 1,
};
static struct platform_device *devices[] __initdata = {
&nand_device,
&pmu_device,
};
/****************************************************************************
*
* Called from the customize_machine function in arch/arm/kernel/setup.c
*
* The customize_machine function is tagged as an arch_initcall
* (see include/linux/init.h for the order that the various init sections
* are called in.
*
*****************************************************************************/
static void __init bcmring_init_machine(void)
{
bcmring_sysctl_header = register_sysctl_table(bcmring_sysctl_reboot);
/* Enable spread spectrum */
chipcHw_enableSpreadSpectrum();
platform_add_devices(devices, ARRAY_SIZE(devices));
bcmring_amba_init();
dma_init();
}
/****************************************************************************
*
* Called from setup_arch (in arch/arm/kernel/setup.c) to fixup any tags
* passed in by the boot loader.
*
*****************************************************************************/
static void __init bcmring_fixup(struct tag *t, char **cmdline,
struct meminfo *mi) {
#ifdef CONFIG_BLK_DEV_INITRD
printk(KERN_NOTICE "bcmring_fixup\n");
t->hdr.tag = ATAG_CORE;
t->hdr.size = tag_size(tag_core);
t->u.core.flags = 0;
t->u.core.pagesize = PAGE_SIZE;
t->u.core.rootdev = 31 << 8 | 0;
t = tag_next(t);
t->hdr.tag = ATAG_MEM;
t->hdr.size = tag_size(tag_mem32);
t->u.mem.start = CFG_GLOBAL_RAM_BASE;
t->u.mem.size = CFG_GLOBAL_RAM_SIZE;
t = tag_next(t);
t->hdr.tag = ATAG_NONE;
t->hdr.size = 0;
#endif
}
/****************************************************************************
*
* Machine Description
*
*****************************************************************************/
MACHINE_START(BCMRING, "BCMRING")
/* Maintainer: Broadcom Corporation */
.fixup = bcmring_fixup,
.map_io = bcmring_map_io,
.init_early = bcmring_init_early,
.init_irq = bcmring_init_irq,
.timer = &bcmring_timer,
.init_machine = bcmring_init_machine,
.restart = bcmring_restart,
MACHINE_END
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