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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 */
17#include <linux/irqchip.h>
18#include <linux/of_address.h>
19#include <linux/of_irq.h>
20#include <linux/of_platform.h>
21#include <linux/reboot.h>
22
23#include <asm/hardware/cache-l2x0.h>
24#include <asm/mach/arch.h>
25#include <asm/mach/map.h>
26
27#include "core.h"
28
29void __iomem *socfpga_scu_base_addr = ((void __iomem *)(SOCFPGA_SCU_VIRT_BASE));
30void __iomem *sys_manager_base_addr;
31void __iomem *rst_manager_base_addr;
32unsigned long cpu1start_addr;
33
34static 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
41static 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
48static 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
59static void __init socfpga_map_io(void)
60{
61 socfpga_scu_map_io();
62 iotable_init(&uart_io_desc, 1);
63 early_printk("Early printk initialized\n");
64}
65
66void __init socfpga_sysmgr_init(void)
67{
68 struct device_node *np;
69
70 np = of_find_compatible_node(NULL, NULL, "altr,sys-mgr");
71
72 if (of_property_read_u32(np, "cpu1-start-addr",
73 (u32 *) &cpu1start_addr))
74 pr_err("SMP: Need cpu1-start-addr in device tree.\n");
75
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
82static void __init socfpga_init_irq(void)
83{
84 irqchip_init();
85 socfpga_sysmgr_init();
86}
87
88static void socfpga_cyclone5_restart(enum reboot_mode mode, const char *cmd)
89{
90 u32 temp;
91
92 temp = readl(rst_manager_base_addr + SOCFPGA_RSTMGR_CTRL);
93
94 if (mode == REBOOT_HARD)
95 temp |= RSTMGR_CTRL_SWCOLDRSTREQ;
96 else
97 temp |= RSTMGR_CTRL_SWWARMRSTREQ;
98 writel(temp, rst_manager_base_addr + SOCFPGA_RSTMGR_CTRL);
99}
100
101static void __init socfpga_cyclone5_init(void)
102{
103 l2x0_of_init(0, ~0UL);
104 of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
105}
106
107static const char *altera_dt_match[] = {
108 "altr,socfpga",
109 NULL
110};
111
112DT_MACHINE_START(SOCFPGA, "Altera SOCFPGA")
113 .smp = smp_ops(socfpga_smp_ops),
114 .map_io = socfpga_map_io,
115 .init_irq = socfpga_init_irq,
116 .init_machine = socfpga_cyclone5_init,
117 .restart = socfpga_cyclone5_restart,
118 .dt_compat = altera_dt_match,
119MACHINE_END
1/*
2 * Copyright (C) 2012-2015 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 */
17#include <linux/irqchip.h>
18#include <linux/of_address.h>
19#include <linux/of_irq.h>
20#include <linux/of_platform.h>
21#include <linux/reboot.h>
22
23#include <asm/hardware/cache-l2x0.h>
24#include <asm/mach/arch.h>
25#include <asm/mach/map.h>
26#include <asm/cacheflush.h>
27
28#include "core.h"
29
30void __iomem *sys_manager_base_addr;
31void __iomem *rst_manager_base_addr;
32void __iomem *sdr_ctl_base_addr;
33unsigned long socfpga_cpu1start_addr;
34
35void __init socfpga_sysmgr_init(void)
36{
37 struct device_node *np;
38
39 np = of_find_compatible_node(NULL, NULL, "altr,sys-mgr");
40
41 if (of_property_read_u32(np, "cpu1-start-addr",
42 (u32 *) &socfpga_cpu1start_addr))
43 pr_err("SMP: Need cpu1-start-addr in device tree.\n");
44
45 /* Ensure that socfpga_cpu1start_addr is visible to other CPUs */
46 smp_wmb();
47 sync_cache_w(&socfpga_cpu1start_addr);
48
49 sys_manager_base_addr = of_iomap(np, 0);
50
51 np = of_find_compatible_node(NULL, NULL, "altr,rst-mgr");
52 rst_manager_base_addr = of_iomap(np, 0);
53
54 np = of_find_compatible_node(NULL, NULL, "altr,sdr-ctl");
55 sdr_ctl_base_addr = of_iomap(np, 0);
56}
57
58static void __init socfpga_init_irq(void)
59{
60 irqchip_init();
61 socfpga_sysmgr_init();
62 if (IS_ENABLED(CONFIG_EDAC_ALTERA_L2C))
63 socfpga_init_l2_ecc();
64
65 if (IS_ENABLED(CONFIG_EDAC_ALTERA_OCRAM))
66 socfpga_init_ocram_ecc();
67}
68
69static void socfpga_cyclone5_restart(enum reboot_mode mode, const char *cmd)
70{
71 u32 temp;
72
73 temp = readl(rst_manager_base_addr + SOCFPGA_RSTMGR_CTRL);
74
75 if (mode == REBOOT_HARD)
76 temp |= RSTMGR_CTRL_SWCOLDRSTREQ;
77 else
78 temp |= RSTMGR_CTRL_SWWARMRSTREQ;
79 writel(temp, rst_manager_base_addr + SOCFPGA_RSTMGR_CTRL);
80}
81
82static void socfpga_arria10_restart(enum reboot_mode mode, const char *cmd)
83{
84 u32 temp;
85
86 temp = readl(rst_manager_base_addr + SOCFPGA_A10_RSTMGR_CTRL);
87
88 if (mode == REBOOT_HARD)
89 temp |= RSTMGR_CTRL_SWCOLDRSTREQ;
90 else
91 temp |= RSTMGR_CTRL_SWWARMRSTREQ;
92 writel(temp, rst_manager_base_addr + SOCFPGA_A10_RSTMGR_CTRL);
93}
94
95static const char *altera_dt_match[] = {
96 "altr,socfpga",
97 NULL
98};
99
100DT_MACHINE_START(SOCFPGA, "Altera SOCFPGA")
101 .l2c_aux_val = 0,
102 .l2c_aux_mask = ~0,
103 .init_irq = socfpga_init_irq,
104 .restart = socfpga_cyclone5_restart,
105 .dt_compat = altera_dt_match,
106MACHINE_END
107
108static const char *altera_a10_dt_match[] = {
109 "altr,socfpga-arria10",
110 NULL
111};
112
113DT_MACHINE_START(SOCFPGA_A10, "Altera SOCFPGA Arria10")
114 .l2c_aux_val = 0,
115 .l2c_aux_mask = ~0,
116 .init_irq = socfpga_init_irq,
117 .restart = socfpga_arria10_restart,
118 .dt_compat = altera_a10_dt_match,
119MACHINE_END