You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
83 lines
2.1 KiB
83 lines
2.1 KiB
9 years ago
|
/*
|
||
|
|
* Author: Alexander Shiyan <shc_work@mail.ru>, 2016
|
||
|
|
*
|
||
|
|
* 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; either version 2 of the License, or
|
||
|
|
* (at your option) any later version.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/io.h>
|
||
|
|
#include <linux/of_fdt.h>
|
||
|
|
#include <linux/platform_device.h>
|
||
|
|
#include <linux/random.h>
|
||
|
|
#include <linux/sizes.h>
|
||
|
|
|
||
|
|
#include <linux/mfd/syscon/clps711x.h>
|
||
|
|
|
||
|
|
#include <asm/system_info.h>
|
||
|
|
#include <asm/system_misc.h>
|
||
|
|
#include <asm/mach/arch.h>
|
||
|
|
#include <asm/mach/map.h>
|
||
|
|
|
||
|
|
#define CLPS711X_VIRT_BASE IOMEM(0xfeff4000)
|
||
|
|
#define CLPS711X_PHYS_BASE (0x80000000)
|
||
|
|
# define SYSFLG1 (0x0140)
|
||
|
|
# define HALT (0x0800)
|
||
|
|
# define UNIQID (0x2440)
|
||
|
|
# define RANDID0 (0x2700)
|
||
|
|
# define RANDID1 (0x2704)
|
||
|
|
# define RANDID2 (0x2708)
|
||
|
|
# define RANDID3 (0x270c)
|
||
|
|
|
||
|
|
static struct map_desc clps711x_io_desc __initdata = {
|
||
|
|
.virtual = (unsigned long)CLPS711X_VIRT_BASE,
|
||
|
|
.pfn = __phys_to_pfn(CLPS711X_PHYS_BASE),
|
||
|
|
.length = 48 * SZ_1K,
|
||
|
|
.type = MT_DEVICE,
|
||
|
|
};
|
||
|
|
|
||
|
|
static void __init clps711x_map_io(void)
|
||
|
|
{
|
||
|
|
iotable_init(&clps711x_io_desc, 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct resource clps711x_cpuidle_res =
|
||
|
|
DEFINE_RES_MEM(CLPS711X_PHYS_BASE + HALT, SZ_128);
|
||
|
|
|
||
|
|
static void __init clps711x_init(void)
|
||
|
|
{
|
||
|
|
u32 id[5];
|
||
|
|
|
||
|
|
id[0] = readl(CLPS711X_VIRT_BASE + UNIQID);
|
||
|
|
id[1] = readl(CLPS711X_VIRT_BASE + RANDID0);
|
||
|
|
id[2] = readl(CLPS711X_VIRT_BASE + RANDID1);
|
||
|
|
id[3] = readl(CLPS711X_VIRT_BASE + RANDID2);
|
||
|
|
id[4] = readl(CLPS711X_VIRT_BASE + RANDID3);
|
||
|
|
system_rev = SYSFLG1_VERID(readl(CLPS711X_VIRT_BASE + SYSFLG1));
|
||
|
|
|
||
|
|
add_device_randomness(id, sizeof(id));
|
||
|
|
|
||
|
|
system_serial_low = id[0];
|
||
|
|
|
||
|
|
platform_device_register_simple("clps711x-cpuidle", PLATFORM_DEVID_NONE,
|
||
|
|
&clps711x_cpuidle_res, 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void clps711x_restart(enum reboot_mode mode, const char *cmd)
|
||
|
|
{
|
||
|
|
soft_restart(0);
|
||
|
|
}
|
||
|
|
|
||
|
|
static const char *clps711x_compat[] __initconst = {
|
||
|
|
"cirrus,ep7209",
|
||
|
|
NULL
|
||
|
|
};
|
||
|
|
|
||
|
|
DT_MACHINE_START(CLPS711X_DT, "Cirrus Logic CLPS711X (Device Tree Support)")
|
||
|
|
.dt_compat = clps711x_compat,
|
||
|
|
.map_io = clps711x_map_io,
|
||
|
|
.init_late = clps711x_init,
|
||
|
|
.restart = clps711x_restart,
|
||
|
|
MACHINE_END
|