1 /* 2 * OMAP4 specific common source file. 3 * 4 * Copyright (C) 2010 Texas Instruments, Inc. 5 * Author: 6 * Santosh Shilimkar <santosh.shilimkar@ti.com> 7 * 8 * 9 * This program is free software,you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License version 2 as 11 * published by the Free Software Foundation. 12 */ 13 14 #include <linux/kernel.h> 15 #include <linux/init.h> 16 #include <linux/io.h> 17 #include <linux/platform_device.h> 18 19 #include <asm/hardware/gic.h> 20 #include <asm/hardware/cache-l2x0.h> 21 22 #include <mach/hardware.h> 23 #include <mach/omap4-common.h> 24 25 #ifdef CONFIG_CACHE_L2X0 26 void __iomem *l2cache_base; 27 #endif 28 29 void __iomem *gic_cpu_base_addr; 30 void __iomem *gic_dist_base_addr; 31 32 33 void __init gic_init_irq(void) 34 { 35 /* Static mapping, never released */ 36 gic_dist_base_addr = ioremap(OMAP44XX_GIC_DIST_BASE, SZ_4K); 37 BUG_ON(!gic_dist_base_addr); 38 gic_dist_init(0, gic_dist_base_addr, 29); 39 40 /* Static mapping, never released */ 41 gic_cpu_base_addr = ioremap(OMAP44XX_GIC_CPU_BASE, SZ_512); 42 BUG_ON(!gic_cpu_base_addr); 43 gic_cpu_init(0, gic_cpu_base_addr); 44 } 45 46 #ifdef CONFIG_CACHE_L2X0 47 static int __init omap_l2_cache_init(void) 48 { 49 /* 50 * To avoid code running on other OMAPs in 51 * multi-omap builds 52 */ 53 if (!cpu_is_omap44xx()) 54 return -ENODEV; 55 56 /* Static mapping, never released */ 57 l2cache_base = ioremap(OMAP44XX_L2CACHE_BASE, SZ_4K); 58 BUG_ON(!l2cache_base); 59 60 /* Enable PL310 L2 Cache controller */ 61 omap_smc1(0x102, 0x1); 62 63 /* 64 * 32KB way size, 16-way associativity, 65 * parity disabled 66 */ 67 l2x0_init(l2cache_base, 0x0e050000, 0xc0000fff); 68 69 return 0; 70 } 71 early_initcall(omap_l2_cache_init); 72 #endif 73