diff options
Diffstat (limited to 'arch/arm/mach-tegra/tegra.c')
| -rw-r--r-- | arch/arm/mach-tegra/tegra.c | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/tegra.c b/arch/arm/mach-tegra/tegra.c new file mode 100644 index 000000000..861d88486 --- /dev/null +++ b/arch/arm/mach-tegra/tegra.c @@ -0,0 +1,168 @@ +/* + * NVIDIA Tegra SoC device tree board support + * + * Copyright (C) 2011, 2013, NVIDIA Corporation + * Copyright (C) 2010 Secret Lab Technologies, Ltd. + * Copyright (C) 2010 Google, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/clk.h> +#include <linux/clk/tegra.h> +#include <linux/dma-mapping.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/irqchip.h> +#include <linux/irqdomain.h> +#include <linux/kernel.h> +#include <linux/of_address.h> +#include <linux/of_fdt.h> +#include <linux/of.h> +#include <linux/of_platform.h> +#include <linux/pda_power.h> +#include <linux/platform_device.h> +#include <linux/serial_8250.h> +#include <linux/slab.h> +#include <linux/sys_soc.h> +#include <linux/usb/tegra_usb_phy.h> + +#include <soc/tegra/fuse.h> +#include <soc/tegra/pmc.h> + +#include <asm/hardware/cache-l2x0.h> +#include <asm/mach/arch.h> +#include <asm/mach/time.h> +#include <asm/mach-types.h> +#include <asm/setup.h> +#include <asm/trusted_foundations.h> + +#include "board.h" +#include "common.h" +#include "cpuidle.h" +#include "flowctrl.h" +#include "iomap.h" +#include "irq.h" +#include "pm.h" +#include "reset.h" +#include "sleep.h" + +/* + * Storage for debug-macro.S's state. + * + * This must be in .data not .bss so that it gets initialized each time the + * kernel is loaded. The data is declared here rather than debug-macro.S so + * that multiple inclusions of debug-macro.S point at the same data. + */ +u32 tegra_uart_config[3] = { + /* Debug UART initialization required */ + 1, + /* Debug UART physical address */ + 0, + /* Debug UART virtual address */ + 0, +}; + +static void __init tegra_init_early(void) +{ + of_register_trusted_foundations(); + tegra_cpu_reset_handler_init(); + tegra_flowctrl_init(); +} + +static void __init tegra_dt_init_irq(void) +{ + tegra_init_irq(); + irqchip_init(); +} + +static void __init tegra_dt_init(void) +{ + struct soc_device_attribute *soc_dev_attr; + struct soc_device *soc_dev; + struct device *parent = NULL; + + soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); + if (!soc_dev_attr) + goto out; + + soc_dev_attr->family = kasprintf(GFP_KERNEL, "Tegra"); + soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%d", + tegra_sku_info.revision); + soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "%u", tegra_get_chip_id()); + + soc_dev = soc_device_register(soc_dev_attr); + if (IS_ERR(soc_dev)) { + kfree(soc_dev_attr->family); + kfree(soc_dev_attr->revision); + kfree(soc_dev_attr->soc_id); + kfree(soc_dev_attr); + goto out; + } + + parent = soc_device_to_device(soc_dev); + + /* + * Finished with the static registrations now; fill in the missing + * devices + */ +out: + of_platform_populate(NULL, of_default_bus_match_table, NULL, parent); +} + +static void __init paz00_init(void) +{ + if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC)) + tegra_paz00_wifikill_init(); +} + +static struct { + char *machine; + void (*init)(void); +} board_init_funcs[] = { + { "compal,paz00", paz00_init }, +}; + +static void __init tegra_dt_init_late(void) +{ + int i; + + tegra_init_suspend(); + tegra_cpuidle_init(); + + for (i = 0; i < ARRAY_SIZE(board_init_funcs); i++) { + if (of_machine_is_compatible(board_init_funcs[i].machine)) { + board_init_funcs[i].init(); + break; + } + } +} + +static const char * const tegra_dt_board_compat[] = { + "nvidia,tegra124", + "nvidia,tegra114", + "nvidia,tegra30", + "nvidia,tegra20", + NULL +}; + +DT_MACHINE_START(TEGRA_DT, "NVIDIA Tegra SoC (Flattened Device Tree)") + .l2c_aux_val = 0x3c400001, + .l2c_aux_mask = 0xc20fc3fe, + .smp = smp_ops(tegra_smp_ops), + .map_io = tegra_map_common_io, + .init_early = tegra_init_early, + .init_irq = tegra_dt_init_irq, + .init_machine = tegra_dt_init, + .init_late = tegra_dt_init_late, + .restart = tegra_pmc_restart, + .dt_compat = tegra_dt_board_compat, +MACHINE_END |