Dinh Nguyen | 6631422 | 2012-07-18 16:07:18 -0600 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 Altera Corporation |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 16 | */ |
Rob Herring | 0529e315 | 2012-11-05 16:18:28 -0600 | [diff] [blame] | 17 | #include <linux/irqchip.h> |
Dinh Nguyen | 9c4566a | 2012-10-25 10:41:39 -0600 | [diff] [blame] | 18 | #include <linux/of_address.h> |
Dinh Nguyen | 6631422 | 2012-07-18 16:07:18 -0600 | [diff] [blame] | 19 | #include <linux/of_irq.h> |
| 20 | #include <linux/of_platform.h> |
Robin Holt | 7b6d864 | 2013-07-08 16:01:40 -0700 | [diff] [blame] | 21 | #include <linux/reboot.h> |
Dinh Nguyen | 6631422 | 2012-07-18 16:07:18 -0600 | [diff] [blame] | 22 | |
| 23 | #include <asm/hardware/cache-l2x0.h> |
Dinh Nguyen | 6631422 | 2012-07-18 16:07:18 -0600 | [diff] [blame] | 24 | #include <asm/mach/arch.h> |
Dinh Nguyen | 9c4566a | 2012-10-25 10:41:39 -0600 | [diff] [blame] | 25 | #include <asm/mach/map.h> |
Dinh Nguyen | 6631422 | 2012-07-18 16:07:18 -0600 | [diff] [blame] | 26 | |
Dinh Nguyen | 9c4566a | 2012-10-25 10:41:39 -0600 | [diff] [blame] | 27 | #include "core.h" |
| 28 | |
| 29 | void __iomem *socfpga_scu_base_addr = ((void __iomem *)(SOCFPGA_SCU_VIRT_BASE)); |
| 30 | void __iomem *sys_manager_base_addr; |
| 31 | void __iomem *rst_manager_base_addr; |
Dinh Nguyen | 3a4356c | 2014-10-01 05:44:48 -0500 | [diff] [blame] | 32 | unsigned long socfpga_cpu1start_addr; |
Dinh Nguyen | 9c4566a | 2012-10-25 10:41:39 -0600 | [diff] [blame] | 33 | |
| 34 | static struct map_desc scu_io_desc __initdata = { |
| 35 | .virtual = SOCFPGA_SCU_VIRT_BASE, |
| 36 | .pfn = 0, /* run-time */ |
| 37 | .length = SZ_8K, |
| 38 | .type = MT_DEVICE, |
| 39 | }; |
| 40 | |
Pavel Machek | ef21b49 | 2012-10-29 01:27:24 +0100 | [diff] [blame] | 41 | static struct map_desc uart_io_desc __initdata = { |
| 42 | .virtual = 0xfec02000, |
| 43 | .pfn = __phys_to_pfn(0xffc02000), |
| 44 | .length = SZ_8K, |
| 45 | .type = MT_DEVICE, |
| 46 | }; |
| 47 | |
Dinh Nguyen | 9c4566a | 2012-10-25 10:41:39 -0600 | [diff] [blame] | 48 | static void __init socfpga_scu_map_io(void) |
| 49 | { |
| 50 | unsigned long base; |
| 51 | |
| 52 | /* Get SCU base */ |
| 53 | asm("mrc p15, 4, %0, c15, c0, 0" : "=r" (base)); |
| 54 | |
| 55 | scu_io_desc.pfn = __phys_to_pfn(base); |
| 56 | iotable_init(&scu_io_desc, 1); |
| 57 | } |
| 58 | |
| 59 | static void __init socfpga_map_io(void) |
| 60 | { |
| 61 | socfpga_scu_map_io(); |
Pavel Machek | ef21b49 | 2012-10-29 01:27:24 +0100 | [diff] [blame] | 62 | iotable_init(&uart_io_desc, 1); |
| 63 | early_printk("Early printk initialized\n"); |
Dinh Nguyen | 9c4566a | 2012-10-25 10:41:39 -0600 | [diff] [blame] | 64 | } |
Dinh Nguyen | 6631422 | 2012-07-18 16:07:18 -0600 | [diff] [blame] | 65 | |
Dinh Nguyen | 9c4566a | 2012-10-25 10:41:39 -0600 | [diff] [blame] | 66 | void __init socfpga_sysmgr_init(void) |
| 67 | { |
| 68 | struct device_node *np; |
| 69 | |
| 70 | np = of_find_compatible_node(NULL, NULL, "altr,sys-mgr"); |
Dinh Nguyen | d6dd735 | 2013-02-11 17:30:33 -0600 | [diff] [blame] | 71 | |
| 72 | if (of_property_read_u32(np, "cpu1-start-addr", |
Dinh Nguyen | 3a4356c | 2014-10-01 05:44:48 -0500 | [diff] [blame] | 73 | (u32 *) &socfpga_cpu1start_addr)) |
Dinh Nguyen | d6dd735 | 2013-02-11 17:30:33 -0600 | [diff] [blame] | 74 | pr_err("SMP: Need cpu1-start-addr in device tree.\n"); |
| 75 | |
Dinh Nguyen | 9c4566a | 2012-10-25 10:41:39 -0600 | [diff] [blame] | 76 | sys_manager_base_addr = of_iomap(np, 0); |
| 77 | |
| 78 | np = of_find_compatible_node(NULL, NULL, "altr,rst-mgr"); |
| 79 | rst_manager_base_addr = of_iomap(np, 0); |
| 80 | } |
| 81 | |
Rob Herring | 0529e315 | 2012-11-05 16:18:28 -0600 | [diff] [blame] | 82 | static void __init socfpga_init_irq(void) |
Dinh Nguyen | 6631422 | 2012-07-18 16:07:18 -0600 | [diff] [blame] | 83 | { |
Rob Herring | 0529e315 | 2012-11-05 16:18:28 -0600 | [diff] [blame] | 84 | irqchip_init(); |
Dinh Nguyen | 9c4566a | 2012-10-25 10:41:39 -0600 | [diff] [blame] | 85 | socfpga_sysmgr_init(); |
Dinh Nguyen | 6631422 | 2012-07-18 16:07:18 -0600 | [diff] [blame] | 86 | } |
| 87 | |
Robin Holt | 7b6d864 | 2013-07-08 16:01:40 -0700 | [diff] [blame] | 88 | static void socfpga_cyclone5_restart(enum reboot_mode mode, const char *cmd) |
Dinh Nguyen | 6631422 | 2012-07-18 16:07:18 -0600 | [diff] [blame] | 89 | { |
Dinh Nguyen | 5c04b57 | 2013-04-11 10:55:24 -0500 | [diff] [blame] | 90 | u32 temp; |
| 91 | |
| 92 | temp = readl(rst_manager_base_addr + SOCFPGA_RSTMGR_CTRL); |
| 93 | |
Robin Holt | 7b6d864 | 2013-07-08 16:01:40 -0700 | [diff] [blame] | 94 | if (mode == REBOOT_HARD) |
Dinh Nguyen | 5c04b57 | 2013-04-11 10:55:24 -0500 | [diff] [blame] | 95 | temp |= RSTMGR_CTRL_SWCOLDRSTREQ; |
| 96 | else |
| 97 | temp |= RSTMGR_CTRL_SWWARMRSTREQ; |
| 98 | writel(temp, rst_manager_base_addr + SOCFPGA_RSTMGR_CTRL); |
Dinh Nguyen | 6631422 | 2012-07-18 16:07:18 -0600 | [diff] [blame] | 99 | } |
| 100 | |
Dinh Nguyen | 6631422 | 2012-07-18 16:07:18 -0600 | [diff] [blame] | 101 | static const char *altera_dt_match[] = { |
| 102 | "altr,socfpga", |
Dinh Nguyen | 6631422 | 2012-07-18 16:07:18 -0600 | [diff] [blame] | 103 | NULL |
| 104 | }; |
| 105 | |
| 106 | DT_MACHINE_START(SOCFPGA, "Altera SOCFPGA") |
Russell King | 8b5c18f0 | 2014-04-28 15:55:59 +0100 | [diff] [blame] | 107 | .l2c_aux_val = 0, |
| 108 | .l2c_aux_mask = ~0, |
Dinh Nguyen | 9c4566a | 2012-10-25 10:41:39 -0600 | [diff] [blame] | 109 | .smp = smp_ops(socfpga_smp_ops), |
| 110 | .map_io = socfpga_map_io, |
Rob Herring | 0529e315 | 2012-11-05 16:18:28 -0600 | [diff] [blame] | 111 | .init_irq = socfpga_init_irq, |
Dinh Nguyen | 6631422 | 2012-07-18 16:07:18 -0600 | [diff] [blame] | 112 | .restart = socfpga_cyclone5_restart, |
| 113 | .dt_compat = altera_dt_match, |
| 114 | MACHINE_END |