1 /* 2 * r8a7779 processor support 3 * 4 * Copyright (C) 2011, 2013 Renesas Solutions Corp. 5 * Copyright (C) 2011 Magnus Damm 6 * Copyright (C) 2013 Cogent Embedded, Inc. 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; version 2 of the License. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 */ 17 #include <linux/init.h> 18 #include <linux/irq.h> 19 #include <linux/irqchip.h> 20 #include <linux/irqchip/arm-gic.h> 21 22 #include <asm/mach/arch.h> 23 #include <asm/mach/map.h> 24 25 #include "common.h" 26 #include "r8a7779.h" 27 28 static struct map_desc r8a7779_io_desc[] __initdata = { 29 /* 2M identity mapping for 0xf0000000 (MPCORE) */ 30 { 31 .virtual = 0xf0000000, 32 .pfn = __phys_to_pfn(0xf0000000), 33 .length = SZ_2M, 34 .type = MT_DEVICE_NONSHARED 35 }, 36 /* 16M identity mapping for 0xfexxxxxx (DMAC-S/HPBREG/INTC2/LRAM/DBSC) */ 37 { 38 .virtual = 0xfe000000, 39 .pfn = __phys_to_pfn(0xfe000000), 40 .length = SZ_16M, 41 .type = MT_DEVICE_NONSHARED 42 }, 43 }; 44 45 static void __init r8a7779_map_io(void) 46 { 47 debug_ll_io_init(); 48 iotable_init(r8a7779_io_desc, ARRAY_SIZE(r8a7779_io_desc)); 49 } 50 51 /* IRQ */ 52 #define INT2SMSKCR0 IOMEM(0xfe7822a0) 53 #define INT2SMSKCR1 IOMEM(0xfe7822a4) 54 #define INT2SMSKCR2 IOMEM(0xfe7822a8) 55 #define INT2SMSKCR3 IOMEM(0xfe7822ac) 56 #define INT2SMSKCR4 IOMEM(0xfe7822b0) 57 58 #define INT2NTSR0 IOMEM(0xfe700060) 59 #define INT2NTSR1 IOMEM(0xfe700064) 60 61 static void __init r8a7779_init_irq_dt(void) 62 { 63 irqchip_init(); 64 65 /* route all interrupts to ARM */ 66 __raw_writel(0xffffffff, INT2NTSR0); 67 __raw_writel(0x3fffffff, INT2NTSR1); 68 69 /* unmask all known interrupts in INTCS2 */ 70 __raw_writel(0xfffffff0, INT2SMSKCR0); 71 __raw_writel(0xfff7ffff, INT2SMSKCR1); 72 __raw_writel(0xfffbffdf, INT2SMSKCR2); 73 __raw_writel(0xbffffffc, INT2SMSKCR3); 74 __raw_writel(0x003fee3f, INT2SMSKCR4); 75 } 76 77 static const char *const r8a7779_compat_dt[] __initconst = { 78 "renesas,r8a7779", 79 NULL, 80 }; 81 82 DT_MACHINE_START(R8A7779_DT, "Generic R8A7779 (Flattened Device Tree)") 83 .smp = smp_ops(r8a7779_smp_ops), 84 .map_io = r8a7779_map_io, 85 .init_early = shmobile_init_delay, 86 .init_irq = r8a7779_init_irq_dt, 87 .init_late = shmobile_init_late, 88 .dt_compat = r8a7779_compat_dt, 89 MACHINE_END 90