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