cpu-8815.c
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/*
* Copyright STMicroelectronics, 2007.
*
* 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.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/types.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/amba/bus.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <plat/gpio-nomadik.h>
#include <mach/hardware.h>
#include <mach/irqs.h>
#include <asm/mach/map.h>
#include <asm/hardware/vic.h>
#include <asm/cacheflush.h>
#include <asm/hardware/cache-l2x0.h>
#include "clock.h"
#include "cpu-8815.h"
#define __MEM_4K_RESOURCE(x) \
.res = {.start = (x), .end = (x) + SZ_4K - 1, .flags = IORESOURCE_MEM}
/* The 8815 has 4 GPIO blocks, let's register them immediately */
#define GPIO_RESOURCE(block) \
{ \
.start = NOMADIK_GPIO##block##_BASE, \
.end = NOMADIK_GPIO##block##_BASE + SZ_4K - 1, \
.flags = IORESOURCE_MEM, \
}, \
{ \
.start = IRQ_GPIO##block, \
.end = IRQ_GPIO##block, \
.flags = IORESOURCE_IRQ, \
}
#define GPIO_DEVICE(block) \
{ \
.name = "gpio", \
.id = block, \
.num_resources = 2, \
.resource = &cpu8815_gpio_resources[block * 2], \
.dev = { \
.platform_data = &cpu8815_gpio[block], \
}, \
}
static struct nmk_gpio_platform_data cpu8815_gpio[] = {
{
.name = "GPIO-0-31",
.first_gpio = 0,
.first_irq = NOMADIK_GPIO_TO_IRQ(0),
}, {
.name = "GPIO-32-63",
.first_gpio = 32,
.first_irq = NOMADIK_GPIO_TO_IRQ(32),
}, {
.name = "GPIO-64-95",
.first_gpio = 64,
.first_irq = NOMADIK_GPIO_TO_IRQ(64),
}, {
.name = "GPIO-96-127", /* 124..127 not routed to pin */
.first_gpio = 96,
.first_irq = NOMADIK_GPIO_TO_IRQ(96),
}
};
static struct resource cpu8815_gpio_resources[] = {
GPIO_RESOURCE(0),
GPIO_RESOURCE(1),
GPIO_RESOURCE(2),
GPIO_RESOURCE(3),
};
static struct platform_device cpu8815_platform_gpio[] = {
GPIO_DEVICE(0),
GPIO_DEVICE(1),
GPIO_DEVICE(2),
GPIO_DEVICE(3),
};
static struct amba_device cpu8815_amba_rng = {
.dev = {
.init_name = "rng",
},
__MEM_4K_RESOURCE(NOMADIK_RNG_BASE),
};
static struct platform_device *platform_devs[] __initdata = {
cpu8815_platform_gpio + 0,
cpu8815_platform_gpio + 1,
cpu8815_platform_gpio + 2,
cpu8815_platform_gpio + 3,
};
static struct amba_device *amba_devs[] __initdata = {
&cpu8815_amba_rng
};
static int __init cpu8815_init(void)
{
int i;
platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));
for (i = 0; i < ARRAY_SIZE(amba_devs); i++)
amba_device_register(amba_devs[i], &iomem_resource);
return 0;
}
arch_initcall(cpu8815_init);
/* All SoC devices live in the same area (see hardware.h) */
static struct map_desc nomadik_io_desc[] __initdata = {
{
.virtual = NOMADIK_IO_VIRTUAL,
.pfn = __phys_to_pfn(NOMADIK_IO_PHYSICAL),
.length = NOMADIK_IO_SIZE,
.type = MT_DEVICE,
}
/* static ram and secured ram may be added later */
};
void __init cpu8815_map_io(void)
{
iotable_init(nomadik_io_desc, ARRAY_SIZE(nomadik_io_desc));
}
void __init cpu8815_init_irq(void)
{
/* This modified VIC cell has two register blocks, at 0 and 0x20 */
vic_init(io_p2v(NOMADIK_IC_BASE + 0x00), IRQ_VIC_START + 0, ~0, 0);
vic_init(io_p2v(NOMADIK_IC_BASE + 0x20), IRQ_VIC_START + 32, ~0, 0);
/*
* Init clocks here so that they are available for system timer
* initialization.
*/
clk_init();
}
/*
* This function is called from the board init ("init_machine").
*/
void __init cpu8815_platform_init(void)
{
#ifdef CONFIG_CACHE_L2X0
/* At full speed latency must be >=2, so 0x249 in low bits */
l2x0_init(io_p2v(NOMADIK_L2CC_BASE), 0x00730249, 0xfe000fff);
#endif
return;
}
void cpu8815_restart(char mode, const char *cmd)
{
void __iomem *src_rstsr = io_p2v(NOMADIK_SRC_BASE + 0x18);
/* FIXME: use egpio when implemented */
/* Write anything to Reset status register */
writel(1, src_rstsr);
}