1/* 2 * Copyright STMicroelectronics, 2007. 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 17 */ 18 19#include <linux/types.h> 20#include <linux/init.h> 21#include <linux/device.h> 22#include <linux/amba/bus.h> 23#include <linux/platform_device.h> 24#include <linux/gpio.h> 25 26#include <mach/hardware.h> 27#include <mach/irqs.h> 28#include <asm/mach/map.h> 29#include <asm/hardware/vic.h> 30 31#include <asm/cacheflush.h> 32#include <asm/hardware/cache-l2x0.h> 33 34#include "clock.h" 35 36#define __MEM_4K_RESOURCE(x) \ 37 .res = {.start = (x), .end = (x) + SZ_4K - 1, .flags = IORESOURCE_MEM} 38 39/* The 8815 has 4 GPIO blocks, let's register them immediately */ 40 41#define GPIO_RESOURCE(block) \ 42 { \ 43 .start = NOMADIK_GPIO##block##_BASE, \ 44 .end = NOMADIK_GPIO##block##_BASE + SZ_4K - 1, \ 45 .flags = IORESOURCE_MEM, \ 46 }, \ 47 { \ 48 .start = IRQ_GPIO##block, \ 49 .end = IRQ_GPIO##block, \ 50 .flags = IORESOURCE_IRQ, \ 51 } 52 53#define GPIO_DEVICE(block) \ 54 { \ 55 .name = "gpio", \ 56 .id = block, \ 57 .num_resources = 2, \ 58 .resource = &cpu8815_gpio_resources[block * 2], \ 59 .dev = { \ 60 .platform_data = &cpu8815_gpio[block], \ 61 }, \ 62 } 63 64static struct nmk_gpio_platform_data cpu8815_gpio[] = { 65 { 66 .name = "GPIO-0-31", 67 .first_gpio = 0, 68 .first_irq = NOMADIK_GPIO_TO_IRQ(0), 69 }, { 70 .name = "GPIO-32-63", 71 .first_gpio = 32, 72 .first_irq = NOMADIK_GPIO_TO_IRQ(32), 73 }, { 74 .name = "GPIO-64-95", 75 .first_gpio = 64, 76 .first_irq = NOMADIK_GPIO_TO_IRQ(64), 77 }, { 78 .name = "GPIO-96-127", /* 124..127 not routed to pin */ 79 .first_gpio = 96, 80 .first_irq = NOMADIK_GPIO_TO_IRQ(96), 81 } 82}; 83 84static struct resource cpu8815_gpio_resources[] = { 85 GPIO_RESOURCE(0), 86 GPIO_RESOURCE(1), 87 GPIO_RESOURCE(2), 88 GPIO_RESOURCE(3), 89}; 90 91static struct platform_device cpu8815_platform_gpio[] = { 92 GPIO_DEVICE(0), 93 GPIO_DEVICE(1), 94 GPIO_DEVICE(2), 95 GPIO_DEVICE(3), 96}; 97 98static struct amba_device cpu8815_amba_rng = { 99 .dev = { 100 .init_name = "rng", 101 }, 102 __MEM_4K_RESOURCE(NOMADIK_RNG_BASE), 103}; 104 105static struct platform_device *platform_devs[] __initdata = { 106 cpu8815_platform_gpio + 0, 107 cpu8815_platform_gpio + 1, 108 cpu8815_platform_gpio + 2, 109 cpu8815_platform_gpio + 3, 110}; 111 112static struct amba_device *amba_devs[] __initdata = { 113 &cpu8815_amba_rng 114}; 115 116static int __init cpu8815_init(void) 117{ 118 int i; 119 120 platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs)); 121 for (i = 0; i < ARRAY_SIZE(amba_devs); i++) 122 amba_device_register(amba_devs[i], &iomem_resource); 123 return 0; 124} 125arch_initcall(cpu8815_init); 126 127/* All SoC devices live in the same area (see hardware.h) */ 128static struct map_desc nomadik_io_desc[] __initdata = { 129 { 130 .virtual = NOMADIK_IO_VIRTUAL, 131 .pfn = __phys_to_pfn(NOMADIK_IO_PHYSICAL), 132 .length = NOMADIK_IO_SIZE, 133 .type = MT_DEVICE, 134 } 135 /* static ram and secured ram may be added later */ 136}; 137 138void __init cpu8815_map_io(void) 139{ 140 iotable_init(nomadik_io_desc, ARRAY_SIZE(nomadik_io_desc)); 141} 142 143void __init cpu8815_init_irq(void) 144{ 145 /* This modified VIC cell has two register blocks, at 0 and 0x20 */ 146 vic_init(io_p2v(NOMADIK_IC_BASE + 0x00), IRQ_VIC_START + 0, ~0, 0); 147 vic_init(io_p2v(NOMADIK_IC_BASE + 0x20), IRQ_VIC_START + 32, ~0, 0); 148 149 /* 150 * Init clocks here so that they are available for system timer 151 * initialization. 152 */ 153 clk_init(); 154} 155 156/* 157 * This function is called from the board init ("init_machine"). 158 */ 159 void __init cpu8815_platform_init(void) 160{ 161#ifdef CONFIG_CACHE_L2X0 162 /* At full speed latency must be >=2, so 0x249 in low bits */ 163 l2x0_init(io_p2v(NOMADIK_L2CC_BASE), 0x00730249, 0xfe000fff); 164#endif 165 return; 166} 167