/* * linux/arch/arm/mach-omap1/io.c * * OMAP1 I/O mapping code * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/init.h> #include <asm/tlb.h> #include <asm/mach/map.h> #include <asm/io.h> #include <asm/arch/mux.h> #include <asm/arch/tc.h> extern int omap1_clk_init(void); extern void omap_check_revision(void); extern void omap_sram_init(void); extern void omapfb_reserve_sdram(void); /* * The machine specific code may provide the extra mapping besides the * default mapping provided here. */ static struct map_desc omap_io_desc[] __initdata = { { .virtual = IO_VIRT, .pfn = __phys_to_pfn(IO_PHYS), .length = IO_SIZE, .type = MT_DEVICE } }; #ifdef CONFIG_ARCH_OMAP730 static struct map_desc omap730_io_desc[] __initdata = { { .virtual = OMAP730_DSP_BASE, .pfn = __phys_to_pfn(OMAP730_DSP_START), .length = OMAP730_DSP_SIZE, .type = MT_DEVICE }, { .virtual = OMAP730_DSPREG_BASE, .pfn = __phys_to_pfn(OMAP730_DSPREG_START), .length = OMAP730_DSPREG_SIZE, .type = MT_DEVICE } }; #endif #ifdef CONFIG_ARCH_OMAP15XX static struct map_desc omap1510_io_desc[] __initdata = { { .virtual = OMAP1510_DSP_BASE, .pfn = __phys_to_pfn(OMAP1510_DSP_START), .length = OMAP1510_DSP_SIZE, .type = MT_DEVICE }, { .virtual = OMAP1510_DSPREG_BASE, .pfn = __phys_to_pfn(OMAP1510_DSPREG_START), .length = OMAP1510_DSPREG_SIZE, .type = MT_DEVICE } }; #endif #if defined(CONFIG_ARCH_OMAP16XX) static struct map_desc omap16xx_io_desc[] __initdata = { { .virtual = OMAP16XX_DSP_BASE, .pfn = __phys_to_pfn(OMAP16XX_DSP_START), .length = OMAP16XX_DSP_SIZE, .type = MT_DEVICE }, { .virtual = OMAP16XX_DSPREG_BASE, .pfn = __phys_to_pfn(OMAP16XX_DSPREG_START), .length = OMAP16XX_DSPREG_SIZE, .type = MT_DEVICE } }; #endif /* * Maps common IO regions for omap1. This should only get called from * board specific init. */ void __init omap1_map_common_io(void) { iotable_init(omap_io_desc, ARRAY_SIZE(omap_io_desc)); /* Normally devicemaps_init() would flush caches and tlb after * mdesc->map_io(), but we must also do it here because of the CPU * revision check below. */ local_flush_tlb_all(); flush_cache_all(); /* We want to check CPU revision early for cpu_is_omapxxxx() macros. * IO space mapping must be initialized before we can do that. */ omap_check_revision(); #ifdef CONFIG_ARCH_OMAP730 if (cpu_is_omap730()) { iotable_init(omap730_io_desc, ARRAY_SIZE(omap730_io_desc)); } #endif #ifdef CONFIG_ARCH_OMAP15XX if (cpu_is_omap15xx()) { iotable_init(omap1510_io_desc, ARRAY_SIZE(omap1510_io_desc)); } #endif #if defined(CONFIG_ARCH_OMAP16XX) if (cpu_is_omap16xx()) { iotable_init(omap16xx_io_desc, ARRAY_SIZE(omap16xx_io_desc)); } #endif omap_sram_init(); omapfb_reserve_sdram(); } /* * Common low-level hardware init for omap1. This should only get called from * board specific init. */ void __init omap1_init_common_hw() { /* REVISIT: Refer to OMAP5910 Errata, Advisory SYS_1: "Timeout Abort * on a Posted Write in the TIPB Bridge". */ omap_writew(0x0, MPU_PUBLIC_TIPB_CNTL); omap_writew(0x0, MPU_PRIVATE_TIPB_CNTL); /* Must init clocks early to assure that timer interrupt works */ omap1_clk_init(); omap1_mux_init(); }