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> |
Michal Simek | e932900 | 2013-03-20 10:15:28 +0100 | [diff] [blame^] | 23 | #include <linux/clocksource.h> |
Josh Cartwright | 0f586fb | 2012-11-08 12:04:26 -0600 | [diff] [blame] | 24 | #include <linux/of_address.h> |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 25 | #include <linux/of_irq.h> |
| 26 | #include <linux/of_platform.h> |
Arnd Bergmann | 3d64b44 | 2011-07-07 11:35:20 +0000 | [diff] [blame] | 27 | #include <linux/of.h> |
Michal Simek | c067561 | 2013-01-28 13:22:27 +0100 | [diff] [blame] | 28 | #include <linux/irqchip.h> |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 29 | |
Arnd Bergmann | 3d64b44 | 2011-07-07 11:35:20 +0000 | [diff] [blame] | 30 | #include <asm/mach/arch.h> |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 31 | #include <asm/mach/map.h> |
Josh Cartwright | 03e0759 | 2012-10-31 11:11:59 -0600 | [diff] [blame] | 32 | #include <asm/mach/time.h> |
Arnd Bergmann | 3d64b44 | 2011-07-07 11:35:20 +0000 | [diff] [blame] | 33 | #include <asm/mach-types.h> |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 34 | #include <asm/page.h> |
Josh Cartwright | 9a45eb6 | 2012-11-19 11:38:29 -0600 | [diff] [blame] | 35 | #include <asm/pgtable.h> |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 36 | #include <asm/hardware/cache-l2x0.h> |
| 37 | |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 38 | #include "common.h" |
| 39 | |
| 40 | static struct of_device_id zynq_of_bus_ids[] __initdata = { |
| 41 | { .compatible = "simple-bus", }, |
| 42 | {} |
| 43 | }; |
| 44 | |
| 45 | /** |
| 46 | * xilinx_init_machine() - System specific initialization, intended to be |
| 47 | * called from board specific initialization. |
| 48 | */ |
Arnd Bergmann | 3d64b44 | 2011-07-07 11:35:20 +0000 | [diff] [blame] | 49 | static void __init xilinx_init_machine(void) |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 50 | { |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 51 | /* |
| 52 | * 64KB way size, 8-way associativity, parity disabled |
| 53 | */ |
Josh Cartwright | 0fcfdbc | 2012-10-23 17:34:22 -0500 | [diff] [blame] | 54 | l2x0_of_init(0x02060000, 0xF0F0FFFF); |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 55 | |
| 56 | of_platform_bus_probe(NULL, zynq_of_bus_ids, NULL); |
| 57 | } |
| 58 | |
Josh Cartwright | 9a45eb6 | 2012-11-19 11:38:29 -0600 | [diff] [blame] | 59 | #define SCU_PERIPH_PHYS 0xF8F00000 |
| 60 | #define SCU_PERIPH_SIZE SZ_8K |
| 61 | #define SCU_PERIPH_VIRT (VMALLOC_END - SCU_PERIPH_SIZE) |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 62 | |
Josh Cartwright | 385f02b | 2012-11-19 10:16:01 -0600 | [diff] [blame] | 63 | static struct map_desc scu_desc __initdata = { |
| 64 | .virtual = SCU_PERIPH_VIRT, |
| 65 | .pfn = __phys_to_pfn(SCU_PERIPH_PHYS), |
| 66 | .length = SCU_PERIPH_SIZE, |
| 67 | .type = MT_DEVICE, |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 68 | }; |
| 69 | |
Josh Cartwright | 03e0759 | 2012-10-31 11:11:59 -0600 | [diff] [blame] | 70 | static void __init xilinx_zynq_timer_init(void) |
| 71 | { |
Josh Cartwright | 0f586fb | 2012-11-08 12:04:26 -0600 | [diff] [blame] | 72 | struct device_node *np; |
| 73 | void __iomem *slcr; |
| 74 | |
| 75 | np = of_find_compatible_node(NULL, NULL, "xlnx,zynq-slcr"); |
| 76 | slcr = of_iomap(np, 0); |
| 77 | WARN_ON(!slcr); |
| 78 | |
| 79 | xilinx_zynq_clocks_init(slcr); |
| 80 | |
Soren Brinkmann | f184c5c | 2012-12-19 10:18:36 -0800 | [diff] [blame] | 81 | xttcps_timer_init(); |
Josh Cartwright | 03e0759 | 2012-10-31 11:11:59 -0600 | [diff] [blame] | 82 | } |
| 83 | |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 84 | /** |
| 85 | * xilinx_map_io() - Create memory mappings needed for early I/O. |
| 86 | */ |
Arnd Bergmann | 3d64b44 | 2011-07-07 11:35:20 +0000 | [diff] [blame] | 87 | static void __init xilinx_map_io(void) |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 88 | { |
Josh Cartwright | 385f02b | 2012-11-19 10:16:01 -0600 | [diff] [blame] | 89 | debug_ll_io_init(); |
| 90 | iotable_init(&scu_desc, 1); |
John Linn | b85a3ef | 2011-06-20 11:47:27 -0600 | [diff] [blame] | 91 | } |
Arnd Bergmann | 3d64b44 | 2011-07-07 11:35:20 +0000 | [diff] [blame] | 92 | |
| 93 | static const char *xilinx_dt_match[] = { |
Josh Cartwright | e06f1a9 | 2012-10-31 12:24:48 -0600 | [diff] [blame] | 94 | "xlnx,zynq-zc702", |
| 95 | "xlnx,zynq-7000", |
Arnd Bergmann | 3d64b44 | 2011-07-07 11:35:20 +0000 | [diff] [blame] | 96 | NULL |
| 97 | }; |
| 98 | |
| 99 | MACHINE_START(XILINX_EP107, "Xilinx Zynq Platform") |
| 100 | .map_io = xilinx_map_io, |
Rob Herring | 0529e315 | 2012-11-05 16:18:28 -0600 | [diff] [blame] | 101 | .init_irq = irqchip_init, |
Arnd Bergmann | 3d64b44 | 2011-07-07 11:35:20 +0000 | [diff] [blame] | 102 | .init_machine = xilinx_init_machine, |
Stephen Warren | 6bb27d7 | 2012-11-08 12:40:59 -0700 | [diff] [blame] | 103 | .init_time = xilinx_zynq_timer_init, |
Arnd Bergmann | 3d64b44 | 2011-07-07 11:35:20 +0000 | [diff] [blame] | 104 | .dt_compat = xilinx_dt_match, |
| 105 | MACHINE_END |