1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * r8a7779 processor support 4 * 5 * Copyright (C) 2011, 2013 Renesas Solutions Corp. 6 * Copyright (C) 2011 Magnus Damm 7 * Copyright (C) 2013 Cogent Embedded, Inc. 8 */ 9 #include <linux/init.h> 10 #include <linux/irq.h> 11 #include <linux/irqchip.h> 12 #include <linux/irqchip/arm-gic.h> 13 14 #include <asm/mach/arch.h> 15 #include <asm/mach/map.h> 16 17 #include "common.h" 18 #include "r8a7779.h" 19 20 static struct map_desc r8a7779_io_desc[] __initdata = { 21 /* 2M identity mapping for 0xf0000000 (MPCORE) */ 22 { 23 .virtual = 0xf0000000, 24 .pfn = __phys_to_pfn(0xf0000000), 25 .length = SZ_2M, 26 .type = MT_DEVICE_NONSHARED 27 }, 28 /* 16M identity mapping for 0xfexxxxxx (DMAC-S/HPBREG/INTC2/LRAM/DBSC) */ 29 { 30 .virtual = 0xfe000000, 31 .pfn = __phys_to_pfn(0xfe000000), 32 .length = SZ_16M, 33 .type = MT_DEVICE_NONSHARED 34 }, 35 }; 36 37 static void __init r8a7779_map_io(void) 38 { 39 debug_ll_io_init(); 40 iotable_init(r8a7779_io_desc, ARRAY_SIZE(r8a7779_io_desc)); 41 } 42 43 /* IRQ */ 44 #define INT2SMSKCR0 IOMEM(0xfe7822a0) 45 #define INT2SMSKCR1 IOMEM(0xfe7822a4) 46 #define INT2SMSKCR2 IOMEM(0xfe7822a8) 47 #define INT2SMSKCR3 IOMEM(0xfe7822ac) 48 #define INT2SMSKCR4 IOMEM(0xfe7822b0) 49 50 #define INT2NTSR0 IOMEM(0xfe700060) 51 #define INT2NTSR1 IOMEM(0xfe700064) 52 53 static void __init r8a7779_init_irq_dt(void) 54 { 55 irqchip_init(); 56 57 /* route all interrupts to ARM */ 58 __raw_writel(0xffffffff, INT2NTSR0); 59 __raw_writel(0x3fffffff, INT2NTSR1); 60 61 /* unmask all known interrupts in INTCS2 */ 62 __raw_writel(0xfffffff0, INT2SMSKCR0); 63 __raw_writel(0xfff7ffff, INT2SMSKCR1); 64 __raw_writel(0xfffbffdf, INT2SMSKCR2); 65 __raw_writel(0xbffffffc, INT2SMSKCR3); 66 __raw_writel(0x003fee3f, INT2SMSKCR4); 67 } 68 69 static const char *const r8a7779_compat_dt[] __initconst = { 70 "renesas,r8a7779", 71 NULL, 72 }; 73 74 DT_MACHINE_START(R8A7779_DT, "Generic R8A7779 (Flattened Device Tree)") 75 .smp = smp_ops(r8a7779_smp_ops), 76 .map_io = r8a7779_map_io, 77 .init_early = shmobile_init_delay, 78 .init_irq = r8a7779_init_irq_dt, 79 .init_late = shmobile_init_late, 80 .dt_compat = r8a7779_compat_dt, 81 MACHINE_END 82