1 /* 2 * r8a7778 processor support 3 * 4 * Copyright (C) 2013 Renesas Solutions Corp. 5 * Copyright (C) 2013 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; version 2 of the License. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21 #include <linux/kernel.h> 22 #include <linux/io.h> 23 #include <linux/irqchip/arm-gic.h> 24 #include <linux/of.h> 25 #include <linux/of_platform.h> 26 #include <linux/platform_device.h> 27 #include <linux/irqchip.h> 28 #include <linux/sh_timer.h> 29 #include <mach/irqs.h> 30 #include <mach/r8a7778.h> 31 #include <mach/common.h> 32 #include <asm/mach/arch.h> 33 #include <asm/hardware/cache-l2x0.h> 34 35 /* TMU */ 36 static struct resource sh_tmu0_resources[] = { 37 DEFINE_RES_MEM(0xffd80008, 12), 38 DEFINE_RES_IRQ(gic_iid(0x40)), 39 }; 40 41 static struct sh_timer_config sh_tmu0_platform_data = { 42 .name = "TMU00", 43 .channel_offset = 0x4, 44 .timer_bit = 0, 45 .clockevent_rating = 200, 46 }; 47 48 static struct resource sh_tmu1_resources[] = { 49 DEFINE_RES_MEM(0xffd80014, 12), 50 DEFINE_RES_IRQ(gic_iid(0x41)), 51 }; 52 53 static struct sh_timer_config sh_tmu1_platform_data = { 54 .name = "TMU01", 55 .channel_offset = 0x10, 56 .timer_bit = 1, 57 .clocksource_rating = 200, 58 }; 59 60 #define PLATFORM_INFO(n, i) \ 61 { \ 62 .parent = &platform_bus, \ 63 .name = #n, \ 64 .id = i, \ 65 .res = n ## i ## _resources, \ 66 .num_res = ARRAY_SIZE(n ## i ##_resources), \ 67 .data = &n ## i ##_platform_data, \ 68 .size_data = sizeof(n ## i ## _platform_data), \ 69 } 70 71 struct platform_device_info platform_devinfo[] = { 72 PLATFORM_INFO(sh_tmu, 0), 73 PLATFORM_INFO(sh_tmu, 1), 74 }; 75 76 void __init r8a7778_add_standard_devices(void) 77 { 78 int i; 79 80 #ifdef CONFIG_CACHE_L2X0 81 void __iomem *base = ioremap_nocache(0xf0100000, 0x1000); 82 if (base) { 83 /* 84 * Early BRESP enable, Shared attribute override enable, 64K*16way 85 * don't call iounmap(base) 86 */ 87 l2x0_init(base, 0x40470000, 0x82000fff); 88 } 89 #endif 90 91 for (i = 0; i < ARRAY_SIZE(platform_devinfo); i++) 92 platform_device_register_full(&platform_devinfo[i]); 93 } 94 95 #define INT2SMSKCR0 0x82288 /* 0xfe782288 */ 96 #define INT2SMSKCR1 0x8228c /* 0xfe78228c */ 97 98 #define INT2NTSR0 0x00018 /* 0xfe700018 */ 99 #define INT2NTSR1 0x0002c /* 0xfe70002c */ 100 static void __init r8a7778_init_irq_common(void) 101 { 102 void __iomem *base = ioremap_nocache(0xfe700000, 0x00100000); 103 104 BUG_ON(!base); 105 106 /* route all interrupts to ARM */ 107 __raw_writel(0x73ffffff, base + INT2NTSR0); 108 __raw_writel(0xffffffff, base + INT2NTSR1); 109 110 /* unmask all known interrupts in INTCS2 */ 111 __raw_writel(0x08330773, base + INT2SMSKCR0); 112 __raw_writel(0x00311110, base + INT2SMSKCR1); 113 114 iounmap(base); 115 } 116 117 void __init r8a7778_init_irq(void) 118 { 119 void __iomem *gic_dist_base; 120 void __iomem *gic_cpu_base; 121 122 gic_dist_base = ioremap_nocache(0xfe438000, PAGE_SIZE); 123 gic_cpu_base = ioremap_nocache(0xfe430000, PAGE_SIZE); 124 BUG_ON(!gic_dist_base || !gic_cpu_base); 125 126 /* use GIC to handle interrupts */ 127 gic_init(0, 29, gic_dist_base, gic_cpu_base); 128 129 r8a7778_init_irq_common(); 130 } 131 132 void __init r8a7778_init_delay(void) 133 { 134 shmobile_setup_delay(800, 1, 3); /* Cortex-A9 @ 800MHz */ 135 } 136 137 #ifdef CONFIG_USE_OF 138 void __init r8a7778_init_irq_dt(void) 139 { 140 irqchip_init(); 141 r8a7778_init_irq_common(); 142 } 143 144 static const struct of_dev_auxdata r8a7778_auxdata_lookup[] __initconst = { 145 {}, 146 }; 147 148 void __init r8a7778_add_standard_devices_dt(void) 149 { 150 of_platform_populate(NULL, of_default_bus_match_table, 151 r8a7778_auxdata_lookup, NULL); 152 } 153 154 static const char *r8a7778_compat_dt[] __initdata = { 155 "renesas,r8a7778", 156 NULL, 157 }; 158 159 DT_MACHINE_START(R8A7778_DT, "Generic R8A7778 (Flattened Device Tree)") 160 .init_early = r8a7778_init_delay, 161 .init_irq = r8a7778_init_irq_dt, 162 .init_machine = r8a7778_add_standard_devices_dt, 163 .init_time = shmobile_timer_init, 164 .dt_compat = r8a7778_compat_dt, 165 MACHINE_END 166 167 #endif /* CONFIG_USE_OF */ 168