150 lines
3.9 KiB
C
150 lines
3.9 KiB
C
/*
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* Copyright STMicroelectronics, 2007.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/types.h>
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#include <linux/init.h>
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#include <linux/device.h>
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#include <linux/amba/bus.h>
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#include <linux/platform_device.h>
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#include <linux/io.h>
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#include <linux/slab.h>
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#include <linux/irq.h>
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#include <linux/dma-mapping.h>
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#include <linux/platform_data/clk-nomadik.h>
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#include <plat/gpio-nomadik.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/mach/map.h>
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#include <asm/hardware/vic.h>
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#include <asm/cacheflush.h>
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#include <asm/hardware/cache-l2x0.h>
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#include "cpu-8815.h"
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/* The 8815 has 4 GPIO blocks, let's register them immediately */
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static resource_size_t __initdata cpu8815_gpio_base[] = {
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NOMADIK_GPIO0_BASE,
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NOMADIK_GPIO1_BASE,
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NOMADIK_GPIO2_BASE,
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NOMADIK_GPIO3_BASE,
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};
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static struct platform_device *
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cpu8815_add_gpio(int id, resource_size_t addr, int irq,
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struct nmk_gpio_platform_data *pdata)
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{
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struct resource resources[] = {
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{
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.start = addr,
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.end = addr + 127,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = irq,
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.end = irq,
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.flags = IORESOURCE_IRQ,
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}
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};
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return platform_device_register_resndata(NULL, "gpio", id,
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resources, ARRAY_SIZE(resources),
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pdata, sizeof(*pdata));
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}
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void cpu8815_add_gpios(resource_size_t *base, int num, int irq,
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struct nmk_gpio_platform_data *pdata)
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{
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int first = 0;
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int i;
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for (i = 0; i < num; i++, first += 32, irq++) {
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pdata->first_gpio = first;
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pdata->first_irq = NOMADIK_GPIO_TO_IRQ(first);
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pdata->num_gpio = 32;
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cpu8815_add_gpio(i, base[i], irq, pdata);
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}
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}
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static int __init cpu8815_init(void)
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{
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struct nmk_gpio_platform_data pdata = {
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/* No custom data yet */
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};
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cpu8815_add_gpios(cpu8815_gpio_base, ARRAY_SIZE(cpu8815_gpio_base),
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IRQ_GPIO0, &pdata);
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amba_apb_device_add(NULL, "rng", NOMADIK_RNG_BASE, SZ_4K, 0, 0, NULL, 0);
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amba_apb_device_add(NULL, "rtc-pl031", NOMADIK_RTC_BASE, SZ_4K, IRQ_RTC_RTT, 0, NULL, 0);
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return 0;
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}
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arch_initcall(cpu8815_init);
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/* All SoC devices live in the same area (see hardware.h) */
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static struct map_desc nomadik_io_desc[] __initdata = {
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{
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.virtual = NOMADIK_IO_VIRTUAL,
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.pfn = __phys_to_pfn(NOMADIK_IO_PHYSICAL),
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.length = NOMADIK_IO_SIZE,
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.type = MT_DEVICE,
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}
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/* static ram and secured ram may be added later */
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};
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void __init cpu8815_map_io(void)
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{
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iotable_init(nomadik_io_desc, ARRAY_SIZE(nomadik_io_desc));
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}
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void __init cpu8815_init_irq(void)
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{
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/* This modified VIC cell has two register blocks, at 0 and 0x20 */
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vic_init(io_p2v(NOMADIK_IC_BASE + 0x00), IRQ_VIC_START + 0, ~0, 0);
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vic_init(io_p2v(NOMADIK_IC_BASE + 0x20), IRQ_VIC_START + 32, ~0, 0);
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/*
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* Init clocks here so that they are available for system timer
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* initialization.
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*/
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nomadik_clk_init();
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}
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/*
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* This function is called from the board init ("init_machine").
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*/
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void __init cpu8815_platform_init(void)
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{
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#ifdef CONFIG_CACHE_L2X0
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/* At full speed latency must be >=2, so 0x249 in low bits */
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l2x0_init(io_p2v(NOMADIK_L2CC_BASE), 0x00730249, 0xfe000fff);
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#endif
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return;
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}
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void cpu8815_restart(char mode, const char *cmd)
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{
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void __iomem *src_rstsr = io_p2v(NOMADIK_SRC_BASE + 0x18);
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/* FIXME: use egpio when implemented */
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/* Write anything to Reset status register */
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writel(1, src_rstsr);
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}
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