52a45100f0
Since init_time in machine descriptor is already covered by arch/arm/kernel/time.c by default. We needn't to append it any more. Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com> Signed-off-by: Kevin Hilman <khilman@linaro.org>
91 lines
2.2 KiB
C
91 lines
2.2 KiB
C
/*
|
|
* (Hisilicon's SoC based) flattened device tree enabled machine
|
|
*
|
|
* Copyright (c) 2012-2013 Hisilicon Ltd.
|
|
* Copyright (c) 2012-2013 Linaro Ltd.
|
|
*
|
|
* Author: Haojian Zhuang <haojian.zhuang@linaro.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/clk-provider.h>
|
|
#include <linux/clocksource.h>
|
|
#include <linux/irqchip.h>
|
|
#include <linux/of_address.h>
|
|
#include <linux/of_platform.h>
|
|
|
|
#include <asm/proc-fns.h>
|
|
|
|
#include <asm/mach/arch.h>
|
|
#include <asm/mach/map.h>
|
|
|
|
#include "core.h"
|
|
|
|
#define HI3620_SYSCTRL_PHYS_BASE 0xfc802000
|
|
#define HI3620_SYSCTRL_VIRT_BASE 0xfe802000
|
|
|
|
/*
|
|
* This table is only for optimization. Since ioremap() could always share
|
|
* the same mapping if it's defined as static IO mapping.
|
|
*
|
|
* Without this table, system could also work. The cost is some virtual address
|
|
* spaces wasted since ioremap() may be called multi times for the same
|
|
* IO space.
|
|
*/
|
|
static struct map_desc hi3620_io_desc[] __initdata = {
|
|
{
|
|
/* sysctrl */
|
|
.pfn = __phys_to_pfn(HI3620_SYSCTRL_PHYS_BASE),
|
|
.virtual = HI3620_SYSCTRL_VIRT_BASE,
|
|
.length = 0x1000,
|
|
.type = MT_DEVICE,
|
|
},
|
|
};
|
|
|
|
static void __init hi3620_map_io(void)
|
|
{
|
|
debug_ll_io_init();
|
|
iotable_init(hi3620_io_desc, ARRAY_SIZE(hi3620_io_desc));
|
|
}
|
|
|
|
static void hi3xxx_restart(enum reboot_mode mode, const char *cmd)
|
|
{
|
|
struct device_node *np;
|
|
void __iomem *base;
|
|
int offset;
|
|
|
|
np = of_find_compatible_node(NULL, NULL, "hisilicon,sysctrl");
|
|
if (!np) {
|
|
pr_err("failed to find hisilicon,sysctrl node\n");
|
|
return;
|
|
}
|
|
base = of_iomap(np, 0);
|
|
if (!base) {
|
|
pr_err("failed to map address in hisilicon,sysctrl node\n");
|
|
return;
|
|
}
|
|
if (of_property_read_u32(np, "reboot-offset", &offset) < 0) {
|
|
pr_err("failed to find reboot-offset property\n");
|
|
return;
|
|
}
|
|
writel_relaxed(0xdeadbeef, base + offset);
|
|
|
|
while (1)
|
|
cpu_do_idle();
|
|
}
|
|
|
|
static const char *hi3xxx_compat[] __initconst = {
|
|
"hisilicon,hi3620-hi4511",
|
|
NULL,
|
|
};
|
|
|
|
DT_MACHINE_START(HI3620, "Hisilicon Hi3620 (Flattened Device Tree)")
|
|
.map_io = hi3620_map_io,
|
|
.dt_compat = hi3xxx_compat,
|
|
.smp = smp_ops(hi3xxx_smp_ops),
|
|
.restart = hi3xxx_restart,
|
|
MACHINE_END
|