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/*
* r8a7779 processor support
*
* Copyright (C) 2011, 2013 Renesas Solutions Corp.
* Copyright (C) 2011 Magnus Damm
* Copyright (C) 2013 Cogent Embedded, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* 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/clk/shmobile.h>
#include <linux/clocksource.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/irqchip.h>
#include <linux/irqchip/arm-gic.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include "common.h"
#include "r8a7779.h"
static struct map_desc r8a7779_io_desc[] __initdata = {
/* 2M identity mapping for 0xf0000000 (MPCORE) */
{
.virtual = 0xf0000000,
.pfn = __phys_to_pfn(0xf0000000),
.length = SZ_2M,
.type = MT_DEVICE_NONSHARED
},
/* 16M identity mapping for 0xfexxxxxx (DMAC-S/HPBREG/INTC2/LRAM/DBSC) */
{
.virtual = 0xfe000000,
.pfn = __phys_to_pfn(0xfe000000),
.length = SZ_16M,
.type = MT_DEVICE_NONSHARED
},
};
static void __init r8a7779_map_io(void)
{
debug_ll_io_init();
iotable_init(r8a7779_io_desc, ARRAY_SIZE(r8a7779_io_desc));
}
/* IRQ */
#define INT2SMSKCR0 IOMEM(0xfe7822a0)
#define INT2SMSKCR1 IOMEM(0xfe7822a4)
#define INT2SMSKCR2 IOMEM(0xfe7822a8)
#define INT2SMSKCR3 IOMEM(0xfe7822ac)
#define INT2SMSKCR4 IOMEM(0xfe7822b0)
#define INT2NTSR0 IOMEM(0xfe700060)
#define INT2NTSR1 IOMEM(0xfe700064)
static void __init r8a7779_init_irq_dt(void)
{
gic_set_irqchip_flags(IRQCHIP_SKIP_SET_WAKE);
irqchip_init();
/* route all interrupts to ARM */
__raw_writel(0xffffffff, INT2NTSR0);
__raw_writel(0x3fffffff, INT2NTSR1);
/* unmask all known interrupts in INTCS2 */
__raw_writel(0xfffffff0, INT2SMSKCR0);
__raw_writel(0xfff7ffff, INT2SMSKCR1);
__raw_writel(0xfffbffdf, INT2SMSKCR2);
__raw_writel(0xbffffffc, INT2SMSKCR3);
__raw_writel(0x003fee3f, INT2SMSKCR4);
}
#define MODEMR 0xffcc0020
static u32 __init r8a7779_read_mode_pins(void)
{
static u32 mode;
static bool mode_valid;
if (!mode_valid) {
void __iomem *modemr = ioremap_nocache(MODEMR, PAGE_SIZE);
BUG_ON(!modemr);
mode = ioread32(modemr);
iounmap(modemr);
mode_valid = true;
}
return mode;
}
static void __init r8a7779_init_time(void)
{
r8a7779_clocks_init(r8a7779_read_mode_pins());
clocksource_of_init();
}
static const char *const r8a7779_compat_dt[] __initconst = {
"renesas,r8a7779",
NULL,
};
DT_MACHINE_START(R8A7779_DT, "Generic R8A7779 (Flattened Device Tree)")
.smp = smp_ops(r8a7779_smp_ops),
.map_io = r8a7779_map_io,
.init_early = shmobile_init_delay,
.init_time = r8a7779_init_time,
.init_irq = r8a7779_init_irq_dt,
.init_late = shmobile_init_late,
.dt_compat = r8a7779_compat_dt,
MACHINE_END
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