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 * 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 18 #include <linux/clk/shmobile.h> 19 #include <linux/io.h> 20 #include <linux/irqchip.h> 21 22 #include <asm/mach/arch.h> 23 24 #include "common.h" 25 #include "irqs.h" 26 27 #define MODEMR 0xffcc0020 28 29 static void __init r8a7778_timer_init(void) 30 { 31 u32 mode; 32 void __iomem *modemr = ioremap_nocache(MODEMR, 4); 33 34 BUG_ON(!modemr); 35 mode = ioread32(modemr); 36 iounmap(modemr); 37 r8a7778_clocks_init(mode); 38 } 39 40 #define INT2SMSKCR0 0x82288 /* 0xfe782288 */ 41 #define INT2SMSKCR1 0x8228c /* 0xfe78228c */ 42 43 #define INT2NTSR0 0x00018 /* 0xfe700018 */ 44 #define INT2NTSR1 0x0002c /* 0xfe70002c */ 45 void __init r8a7778_init_irq_dt(void) 46 { 47 void __iomem *base = ioremap_nocache(0xfe700000, 0x00100000); 48 49 BUG_ON(!base); 50 51 irqchip_init(); 52 53 /* route all interrupts to ARM */ 54 __raw_writel(0x73ffffff, base + INT2NTSR0); 55 __raw_writel(0xffffffff, base + INT2NTSR1); 56 57 /* unmask all known interrupts in INTCS2 */ 58 __raw_writel(0x08330773, base + INT2SMSKCR0); 59 __raw_writel(0x00311110, base + INT2SMSKCR1); 60 61 iounmap(base); 62 } 63 64 static const char *const r8a7778_compat_dt[] __initconst = { 65 "renesas,r8a7778", 66 NULL, 67 }; 68 69 DT_MACHINE_START(R8A7778_DT, "Generic R8A7778 (Flattened Device Tree)") 70 .init_early = shmobile_init_delay, 71 .init_irq = r8a7778_init_irq_dt, 72 .init_late = shmobile_init_late, 73 .init_time = r8a7778_timer_init, 74 .dt_compat = r8a7778_compat_dt, 75 MACHINE_END 76