John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 1 | /* |
| 2 | * This file contains common code that is intended to be used across |
| 3 | * boards so that it's not replicated. |
| 4 | * |
| 5 | * Copyright (C) 2011 Xilinx |
| 6 | * |
| 7 | * This software is licensed under the terms of the GNU General Public |
| 8 | * License version 2, as published by the Free Software Foundation, and |
| 9 | * may be copied, distributed, and modified under those terms. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | */ |
| 16 | |
| 17 | #include <linux/init.h> |
| 18 | #include <linux/kernel.h> |
| 19 | #include <linux/cpumask.h> |
| 20 | #include <linux/platform_device.h> |
| 21 | #include <linux/clk.h> |
Josh Cartwright | 0f586fb | 2012-11-08 12:04:26 -0600 | [diff] [blame^] | 22 | #include <linux/clk/zynq.h> |
| 23 | #include <linux/of_address.h> |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 24 | #include <linux/of_irq.h> |
| 25 | #include <linux/of_platform.h> |
Arnd Bergmann | 3d64b44 | 2011-07-07 11:35:20 +0000 | [diff] [blame] | 26 | #include <linux/of.h> |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 27 | |
Arnd Bergmann | 3d64b44 | 2011-07-07 11:35:20 +0000 | [diff] [blame] | 28 | #include <asm/mach/arch.h> |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 29 | #include <asm/mach/map.h> |
Josh Cartwright | 03e0759 | 2012-10-31 11:11:59 -0600 | [diff] [blame] | 30 | #include <asm/mach/time.h> |
Arnd Bergmann | 3d64b44 | 2011-07-07 11:35:20 +0000 | [diff] [blame] | 31 | #include <asm/mach-types.h> |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 32 | #include <asm/page.h> |
| 33 | #include <asm/hardware/gic.h> |
| 34 | #include <asm/hardware/cache-l2x0.h> |
| 35 | |
| 36 | #include <mach/zynq_soc.h> |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 37 | #include "common.h" |
| 38 | |
| 39 | static struct of_device_id zynq_of_bus_ids[] __initdata = { |
| 40 | { .compatible = "simple-bus", }, |
| 41 | {} |
| 42 | }; |
| 43 | |
| 44 | /** |
| 45 | * xilinx_init_machine() - System specific initialization, intended to be |
| 46 | * called from board specific initialization. |
| 47 | */ |
Arnd Bergmann | 3d64b44 | 2011-07-07 11:35:20 +0000 | [diff] [blame] | 48 | static void __init xilinx_init_machine(void) |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 49 | { |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 50 | /* |
| 51 | * 64KB way size, 8-way associativity, parity disabled |
| 52 | */ |
Josh Cartwright | 0fcfdbc | 2012-10-23 17:34:22 -0500 | [diff] [blame] | 53 | l2x0_of_init(0x02060000, 0xF0F0FFFF); |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 54 | |
| 55 | of_platform_bus_probe(NULL, zynq_of_bus_ids, NULL); |
| 56 | } |
| 57 | |
Josh Cartwright | f447ed2 | 2012-10-17 19:46:49 -0500 | [diff] [blame] | 58 | static struct of_device_id irq_match[] __initdata = { |
| 59 | { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, }, |
| 60 | { } |
| 61 | }; |
| 62 | |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 63 | /** |
| 64 | * xilinx_irq_init() - Interrupt controller initialization for the GIC. |
| 65 | */ |
Arnd Bergmann | 3d64b44 | 2011-07-07 11:35:20 +0000 | [diff] [blame] | 66 | static void __init xilinx_irq_init(void) |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 67 | { |
Josh Cartwright | f447ed2 | 2012-10-17 19:46:49 -0500 | [diff] [blame] | 68 | of_irq_init(irq_match); |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 69 | } |
| 70 | |
| 71 | /* The minimum devices needed to be mapped before the VM system is up and |
| 72 | * running include the GIC, UART and Timer Counter. |
| 73 | */ |
| 74 | |
| 75 | static struct map_desc io_desc[] __initdata = { |
| 76 | { |
| 77 | .virtual = TTC0_VIRT, |
| 78 | .pfn = __phys_to_pfn(TTC0_PHYS), |
Josh Cartwright | f580077 | 2012-10-21 21:15:37 -0500 | [diff] [blame] | 79 | .length = TTC0_SIZE, |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 80 | .type = MT_DEVICE, |
| 81 | }, { |
| 82 | .virtual = SCU_PERIPH_VIRT, |
| 83 | .pfn = __phys_to_pfn(SCU_PERIPH_PHYS), |
Josh Cartwright | f580077 | 2012-10-21 21:15:37 -0500 | [diff] [blame] | 84 | .length = SCU_PERIPH_SIZE, |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 85 | .type = MT_DEVICE, |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 86 | }, |
| 87 | |
| 88 | #ifdef CONFIG_DEBUG_LL |
| 89 | { |
Nick Bowler | aaf5e0b | 2012-11-05 16:45:49 -0500 | [diff] [blame] | 90 | .virtual = LL_UART_VADDR, |
| 91 | .pfn = __phys_to_pfn(LL_UART_PADDR), |
| 92 | .length = UART_SIZE, |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 93 | .type = MT_DEVICE, |
| 94 | }, |
| 95 | #endif |
| 96 | |
| 97 | }; |
| 98 | |
Josh Cartwright | 03e0759 | 2012-10-31 11:11:59 -0600 | [diff] [blame] | 99 | static void __init xilinx_zynq_timer_init(void) |
| 100 | { |
Josh Cartwright | 0f586fb | 2012-11-08 12:04:26 -0600 | [diff] [blame^] | 101 | struct device_node *np; |
| 102 | void __iomem *slcr; |
| 103 | |
| 104 | np = of_find_compatible_node(NULL, NULL, "xlnx,zynq-slcr"); |
| 105 | slcr = of_iomap(np, 0); |
| 106 | WARN_ON(!slcr); |
| 107 | |
| 108 | xilinx_zynq_clocks_init(slcr); |
| 109 | |
Josh Cartwright | 03e0759 | 2012-10-31 11:11:59 -0600 | [diff] [blame] | 110 | xttcpss_timer_init(); |
| 111 | } |
| 112 | |
| 113 | /* |
| 114 | * Instantiate and initialize the system timer structure |
| 115 | */ |
| 116 | static struct sys_timer xttcpss_sys_timer = { |
| 117 | .init = xilinx_zynq_timer_init, |
| 118 | }; |
| 119 | |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 120 | /** |
| 121 | * xilinx_map_io() - Create memory mappings needed for early I/O. |
| 122 | */ |
Arnd Bergmann | 3d64b44 | 2011-07-07 11:35:20 +0000 | [diff] [blame] | 123 | static void __init xilinx_map_io(void) |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 124 | { |
| 125 | iotable_init(io_desc, ARRAY_SIZE(io_desc)); |
| 126 | } |
Arnd Bergmann | 3d64b44 | 2011-07-07 11:35:20 +0000 | [diff] [blame] | 127 | |
| 128 | static const char *xilinx_dt_match[] = { |
Josh Cartwright | e06f1a9 | 2012-10-31 12:24:48 -0600 | [diff] [blame] | 129 | "xlnx,zynq-zc702", |
| 130 | "xlnx,zynq-7000", |
Arnd Bergmann | 3d64b44 | 2011-07-07 11:35:20 +0000 | [diff] [blame] | 131 | NULL |
| 132 | }; |
| 133 | |
| 134 | MACHINE_START(XILINX_EP107, "Xilinx Zynq Platform") |
| 135 | .map_io = xilinx_map_io, |
| 136 | .init_irq = xilinx_irq_init, |
Marc Zyngier | 368b8e2 | 2011-09-06 10:23:45 +0100 | [diff] [blame] | 137 | .handle_irq = gic_handle_irq, |
Arnd Bergmann | 3d64b44 | 2011-07-07 11:35:20 +0000 | [diff] [blame] | 138 | .init_machine = xilinx_init_machine, |
| 139 | .timer = &xttcpss_sys_timer, |
| 140 | .dt_compat = xilinx_dt_match, |
| 141 | MACHINE_END |