/* * Copyright (C) 2008-2009 ST-Ericsson SA * * Author: Srinidhi KASAGAR * * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "setup.h" #include "board-mop500-regulators.h" #include "board-mop500.h" #include "db8500-regs.h" #include "id.h" struct ab8500_platform_data ab8500_platdata = { .regulator = &ab8500_regulator_plat_data, }; struct prcmu_pdata db8500_prcmu_pdata = { .ab_platdata = &ab8500_platdata, .version_offset = DB8500_PRCMU_FW_VERSION_OFFSET, .legacy_offset = DB8500_PRCMU_LEGACY_OFFSET, }; /* minimum static i/o mapping required to boot U8500 platforms */ static struct map_desc u8500_uart_io_desc[] __initdata = { __IO_DEV_DESC(U8500_UART0_BASE, SZ_4K), __IO_DEV_DESC(U8500_UART2_BASE, SZ_4K), }; /* U8500 and U9540 common io_desc */ static struct map_desc u8500_common_io_desc[] __initdata = { /* SCU base also covers GIC CPU BASE and TWD with its 4K page */ __IO_DEV_DESC(U8500_SCU_BASE, SZ_4K), __IO_DEV_DESC(U8500_GIC_DIST_BASE, SZ_4K), __IO_DEV_DESC(U8500_L2CC_BASE, SZ_4K), __IO_DEV_DESC(U8500_MTU0_BASE, SZ_4K), __IO_DEV_DESC(U8500_BACKUPRAM0_BASE, SZ_8K), __IO_DEV_DESC(U8500_CLKRST1_BASE, SZ_4K), __IO_DEV_DESC(U8500_CLKRST2_BASE, SZ_4K), __IO_DEV_DESC(U8500_CLKRST3_BASE, SZ_4K), __IO_DEV_DESC(U8500_CLKRST5_BASE, SZ_4K), __IO_DEV_DESC(U8500_CLKRST6_BASE, SZ_4K), __IO_DEV_DESC(U8500_GPIO0_BASE, SZ_4K), __IO_DEV_DESC(U8500_GPIO1_BASE, SZ_4K), __IO_DEV_DESC(U8500_GPIO2_BASE, SZ_4K), __IO_DEV_DESC(U8500_GPIO3_BASE, SZ_4K), }; /* U8500 IO map specific description */ static struct map_desc u8500_io_desc[] __initdata = { __IO_DEV_DESC(U8500_PRCMU_BASE, SZ_4K), __IO_DEV_DESC(U8500_PRCMU_TCDM_BASE, SZ_4K), }; /* U9540 IO map specific description */ static struct map_desc u9540_io_desc[] __initdata = { __IO_DEV_DESC(U8500_PRCMU_BASE, SZ_4K + SZ_8K), __IO_DEV_DESC(U8500_PRCMU_TCDM_BASE, SZ_4K + SZ_8K), }; void __init u8500_map_io(void) { /* * Map the UARTs early so that the DEBUG_LL stuff continues to work. */ iotable_init(u8500_uart_io_desc, ARRAY_SIZE(u8500_uart_io_desc)); ux500_map_io(); iotable_init(u8500_common_io_desc, ARRAY_SIZE(u8500_common_io_desc)); if (cpu_is_ux540_family()) iotable_init(u9540_io_desc, ARRAY_SIZE(u9540_io_desc)); else iotable_init(u8500_io_desc, ARRAY_SIZE(u8500_io_desc)); } /* * The PMU IRQ lines of two cores are wired together into a single interrupt. * Bounce the interrupt to the other core if it's not ours. */ static irqreturn_t db8500_pmu_handler(int irq, void *dev, irq_handler_t handler) { irqreturn_t ret = handler(irq, dev); int other = !smp_processor_id(); if (ret == IRQ_NONE && cpu_online(other)) irq_set_affinity(irq, cpumask_of(other)); /* * We should be able to get away with the amount of IRQ_NONEs we give, * while still having the spurious IRQ detection code kick in if the * interrupt really starts hitting spuriously. */ return ret; } struct arm_pmu_platdata db8500_pmu_platdata = { .handle_irq = db8500_pmu_handler, }; static const char *db8500_read_soc_id(void) { void __iomem *uid = __io_address(U8500_BB_UID_BASE); /* Throw these device-specific numbers into the entropy pool */ add_device_randomness(uid, 0x14); return kasprintf(GFP_KERNEL, "%08x%08x%08x%08x%08x", readl((u32 *)uid+0), readl((u32 *)uid+1), readl((u32 *)uid+2), readl((u32 *)uid+3), readl((u32 *)uid+4)); } static struct device * __init db8500_soc_device_init(void) { const char *soc_id = db8500_read_soc_id(); return ux500_soc_device_init(soc_id); } static struct of_dev_auxdata u8500_auxdata_lookup[] __initdata = { /* Requires call-back bindings. */ OF_DEV_AUXDATA("arm,cortex-a9-pmu", 0, "arm-pmu", &db8500_pmu_platdata), /* Requires DMA bindings. */ OF_DEV_AUXDATA("arm,pl18x", 0x80126000, "sdi0", &mop500_sdi0_data), OF_DEV_AUXDATA("arm,pl18x", 0x80118000, "sdi1", &mop500_sdi1_data), OF_DEV_AUXDATA("arm,pl18x", 0x80005000, "sdi2", &mop500_sdi2_data), OF_DEV_AUXDATA("arm,pl18x", 0x80114000, "sdi4", &mop500_sdi4_data), OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80123000, "ux500-msp-i2s.0", &msp0_platform_data), OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80124000, "ux500-msp-i2s.1", &msp1_platform_data), OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80117000, "ux500-msp-i2s.2", &msp2_platform_data), OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80125000, "ux500-msp-i2s.3", &msp3_platform_data), /* Requires non-DT:able platform data. */ OF_DEV_AUXDATA("stericsson,db8500-prcmu", 0x80157000, "db8500-prcmu", &db8500_prcmu_pdata), OF_DEV_AUXDATA("stericsson,ux500-cryp", 0xa03cb000, "cryp1", NULL), OF_DEV_AUXDATA("stericsson,ux500-hash", 0xa03c2000, "hash1", NULL), OF_DEV_AUXDATA("stericsson,snd-soc-mop500", 0, "snd-soc-mop500.0", NULL), {}, }; static struct of_dev_auxdata u8540_auxdata_lookup[] __initdata = { OF_DEV_AUXDATA("stericsson,db8500-prcmu", 0x80157000, "db8500-prcmu", &db8500_prcmu_pdata), {}, }; static const struct of_device_id u8500_local_bus_nodes[] = { /* only create devices below soc node */ { .compatible = "stericsson,db8500", }, { .compatible = "stericsson,db8500-prcmu", }, { .compatible = "simple-bus"}, { }, }; static void __init u8500_init_machine(void) { struct device *parent = db8500_soc_device_init(); /* automatically probe child nodes of dbx5x0 devices */ if (of_machine_is_compatible("st-ericsson,u8540")) of_platform_populate(NULL, u8500_local_bus_nodes, u8540_auxdata_lookup, parent); else of_platform_populate(NULL, u8500_local_bus_nodes, u8500_auxdata_lookup, parent); } static const char * stericsson_dt_platform_compat[] = { "st-ericsson,u8500", "st-ericsson,u8540", "st-ericsson,u9500", "st-ericsson,u9540", NULL, }; DT_MACHINE_START(U8500_DT, "ST-Ericsson Ux5x0 platform (Device Tree Support)") .smp = smp_ops(ux500_smp_ops), .map_io = u8500_map_io, .init_irq = ux500_init_irq, /* we re-use nomadik timer here */ .init_time = ux500_timer_init, .init_machine = u8500_init_machine, .init_late = NULL, .dt_compat = stericsson_dt_platform_compat, .restart = ux500_restart, MACHINE_END