mirror of
https://github.com/torvalds/linux.git
synced 2024-11-07 04:32:03 +00:00
9f4f5d26c6
Zynq is able to wake up on any IRQ, so flag it with
IRQCHIP_SKIP_SET_WAKE, and we want to mask off the IRQs when
going to suspend to avoid transient effects so also flag
this with IRQCHIP_MASK_ON_SUSPEND.
This is essentially, making the same changes as commit
'ARM: ux500: set proper GIC flags'
(sha1: 7e1f97ea8f) for Zynq.
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
122 lines
3.0 KiB
C
122 lines
3.0 KiB
C
/*
|
|
* This file contains common code that is intended to be used across
|
|
* boards so that it's not replicated.
|
|
*
|
|
* Copyright (C) 2011 Xilinx
|
|
*
|
|
* This software is licensed under the terms of the GNU General Public
|
|
* License version 2, as published by the Free Software Foundation, and
|
|
* may be copied, distributed, and modified under those terms.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/cpumask.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/clk.h>
|
|
#include <linux/clk/zynq.h>
|
|
#include <linux/clocksource.h>
|
|
#include <linux/of_address.h>
|
|
#include <linux/of_irq.h>
|
|
#include <linux/of_platform.h>
|
|
#include <linux/of.h>
|
|
#include <linux/irqchip.h>
|
|
#include <linux/irqchip/arm-gic.h>
|
|
|
|
#include <asm/mach/arch.h>
|
|
#include <asm/mach/map.h>
|
|
#include <asm/mach/time.h>
|
|
#include <asm/mach-types.h>
|
|
#include <asm/page.h>
|
|
#include <asm/pgtable.h>
|
|
#include <asm/smp_scu.h>
|
|
#include <asm/hardware/cache-l2x0.h>
|
|
|
|
#include "common.h"
|
|
|
|
void __iomem *zynq_scu_base;
|
|
|
|
static struct platform_device zynq_cpuidle_device = {
|
|
.name = "cpuidle-zynq",
|
|
};
|
|
|
|
/**
|
|
* zynq_init_machine - System specific initialization, intended to be
|
|
* called from board specific initialization.
|
|
*/
|
|
static void __init zynq_init_machine(void)
|
|
{
|
|
/*
|
|
* 64KB way size, 8-way associativity, parity disabled
|
|
*/
|
|
l2x0_of_init(0x02060000, 0xF0F0FFFF);
|
|
|
|
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
|
|
|
|
platform_device_register(&zynq_cpuidle_device);
|
|
}
|
|
|
|
static void __init zynq_timer_init(void)
|
|
{
|
|
zynq_slcr_init();
|
|
clocksource_of_init();
|
|
}
|
|
|
|
static struct map_desc zynq_cortex_a9_scu_map __initdata = {
|
|
.length = SZ_256,
|
|
.type = MT_DEVICE,
|
|
};
|
|
|
|
static void __init zynq_scu_map_io(void)
|
|
{
|
|
unsigned long base;
|
|
|
|
base = scu_a9_get_base();
|
|
zynq_cortex_a9_scu_map.pfn = __phys_to_pfn(base);
|
|
/* Expected address is in vmalloc area that's why simple assign here */
|
|
zynq_cortex_a9_scu_map.virtual = base;
|
|
iotable_init(&zynq_cortex_a9_scu_map, 1);
|
|
zynq_scu_base = (void __iomem *)base;
|
|
BUG_ON(!zynq_scu_base);
|
|
}
|
|
|
|
/**
|
|
* zynq_map_io - Create memory mappings needed for early I/O.
|
|
*/
|
|
static void __init zynq_map_io(void)
|
|
{
|
|
debug_ll_io_init();
|
|
zynq_scu_map_io();
|
|
}
|
|
|
|
static void __init zynq_irq_init(void)
|
|
{
|
|
gic_arch_extn.flags = IRQCHIP_SKIP_SET_WAKE | IRQCHIP_MASK_ON_SUSPEND;
|
|
irqchip_init();
|
|
}
|
|
|
|
static void zynq_system_reset(enum reboot_mode mode, const char *cmd)
|
|
{
|
|
zynq_slcr_system_reset();
|
|
}
|
|
|
|
static const char * const zynq_dt_match[] = {
|
|
"xlnx,zynq-7000",
|
|
NULL
|
|
};
|
|
|
|
DT_MACHINE_START(XILINX_EP107, "Xilinx Zynq Platform")
|
|
.smp = smp_ops(zynq_smp_ops),
|
|
.map_io = zynq_map_io,
|
|
.init_irq = zynq_irq_init,
|
|
.init_machine = zynq_init_machine,
|
|
.init_time = zynq_timer_init,
|
|
.dt_compat = zynq_dt_match,
|
|
.restart = zynq_system_reset,
|
|
MACHINE_END
|