kernel-ark/arch/arm/mach-bcmring/arch.c
Will Deacon 8716011315 ARM: 6047/1: ARM: BCMRING: register PMU IRQ during board initialisation
This patch updates the initialisation routine for the BCMRING platform
so that it registers its PMU IRQ with the PMU framework in the Kernel.

Acked-by: Leo Chen <leochen@broadcom.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-04-29 18:03:22 +01:00

178 lines
4.5 KiB
C

/*****************************************************************************
* 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 <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 */
int bcmring_arch_warm_reboot; /* do a warm reboot on hard reset */
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 machine_desc *desc,
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 */
.phys_io = MM_IO_START,
.io_pg_offst = (MM_IO_BASE >> 18) & 0xfffc,
.fixup = bcmring_fixup,
.map_io = bcmring_map_io,
.init_irq = bcmring_init_irq,
.timer = &bcmring_timer,
.init_machine = bcmring_init_machine
MACHINE_END