aboutsummaryrefslogtreecommitdiffstats
path: root/arch
diff options
context:
space:
mode:
authorLey Foon Tan <lftan@altera.com>2014-11-06 02:20:03 -0500
committerLey Foon Tan <lftan@altera.com>2014-12-07 23:56:01 -0500
commit95acd4c7b69c9b250d901d154390ec4c8b7b51c1 (patch)
tree2232613144f317f21ccbd3684cd31ee11eb9c2b5 /arch
parenteea9507a69d637d52705de8703b168bf6bfe5643 (diff)
nios2: Device tree support
Add device tree support to arch/nios2. Signed-off-by: Ley Foon Tan <lftan@altera.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/nios2/boot/dts/3c120_devboard.dts164
-rw-r--r--arch/nios2/boot/linked_dtb.S19
-rw-r--r--arch/nios2/kernel/prom.c65
-rw-r--r--arch/nios2/platform/platform.c46
4 files changed, 294 insertions, 0 deletions
diff --git a/arch/nios2/boot/dts/3c120_devboard.dts b/arch/nios2/boot/dts/3c120_devboard.dts
new file mode 100644
index 000000000000..31c51f9a2f09
--- /dev/null
+++ b/arch/nios2/boot/dts/3c120_devboard.dts
@@ -0,0 +1,164 @@
1/*
2 * Copyright (C) 2013 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 * This file is generated by sopc2dts.
18 */
19
20/dts-v1/;
21
22/ {
23 model = "altr,qsys_ghrd_3c120";
24 compatible = "altr,qsys_ghrd_3c120";
25 #address-cells = <1>;
26 #size-cells = <1>;
27
28 cpus {
29 #address-cells = <1>;
30 #size-cells = <0>;
31
32 cpu: cpu@0x0 {
33 device_type = "cpu";
34 compatible = "altr,nios2-1.0";
35 reg = <0x00000000>;
36 interrupt-controller;
37 #interrupt-cells = <1>;
38 clock-frequency = <125000000>;
39 dcache-line-size = <32>;
40 icache-line-size = <32>;
41 dcache-size = <32768>;
42 icache-size = <32768>;
43 altr,implementation = "fast";
44 altr,pid-num-bits = <8>;
45 altr,tlb-num-ways = <16>;
46 altr,tlb-num-entries = <128>;
47 altr,tlb-ptr-sz = <7>;
48 altr,has-div = <1>;
49 altr,has-mul = <1>;
50 altr,reset-addr = <0xc2800000>;
51 altr,fast-tlb-miss-addr = <0xc7fff400>;
52 altr,exception-addr = <0xd0000020>;
53 altr,has-initda = <1>;
54 altr,has-mmu = <1>;
55 };
56 };
57
58 memory@0 {
59 device_type = "memory";
60 reg = <0x10000000 0x08000000>,
61 <0x07fff400 0x00000400>;
62 };
63
64 sopc@0 {
65 device_type = "soc";
66 ranges;
67 #address-cells = <1>;
68 #size-cells = <1>;
69 compatible = "altr,avalon", "simple-bus";
70 bus-frequency = <125000000>;
71
72 pb_cpu_to_io: bridge@0x8000000 {
73 compatible = "simple-bus";
74 reg = <0x08000000 0x00800000>;
75 #address-cells = <1>;
76 #size-cells = <1>;
77 ranges = <0x00002000 0x08002000 0x00002000>,
78 <0x00004000 0x08004000 0x00000400>,
79 <0x00004400 0x08004400 0x00000040>,
80 <0x00004800 0x08004800 0x00000040>,
81 <0x00004c80 0x08004c80 0x00000020>,
82 <0x00004d50 0x08004d50 0x00000008>,
83 <0x00008000 0x08008000 0x00000020>,
84 <0x00400000 0x08400000 0x00000020>;
85
86 timer_1ms: timer@0x400000 {
87 compatible = "altr,timer-1.0";
88 reg = <0x00400000 0x00000020>;
89 interrupt-parent = <&cpu>;
90 interrupts = <11>;
91 clock-frequency = <125000000>;
92 };
93
94 timer_0: timer@0x8000 {
95 compatible = "altr,timer-1.0";
96 reg = < 0x00008000 0x00000020 >;
97 interrupt-parent = < &cpu >;
98 interrupts = < 5 >;
99 clock-frequency = < 125000000 >;
100 };
101
102 jtag_uart: serial@0x4d50 {
103 compatible = "altr,juart-1.0";
104 reg = <0x00004d50 0x00000008>;
105 interrupt-parent = <&cpu>;
106 interrupts = <1>;
107 };
108
109 tse_mac: ethernet@0x4000 {
110 compatible = "altr,tse-1.0";
111 reg = <0x00004000 0x00000400>,
112 <0x00004400 0x00000040>,
113 <0x00004800 0x00000040>,
114 <0x00002000 0x00002000>;
115 reg-names = "control_port", "rx_csr", "tx_csr", "s1";
116 interrupt-parent = <&cpu>;
117 interrupts = <2 3>;
118 interrupt-names = "rx_irq", "tx_irq";
119 rx-fifo-depth = <8192>;
120 tx-fifo-depth = <8192>;
121 max-frame-size = <1518>;
122 local-mac-address = [ 00 00 00 00 00 00 ];
123 phy-mode = "rgmii-id";
124 phy-handle = <&phy0>;
125 tse_mac_mdio: mdio {
126 compatible = "altr,tse-mdio";
127 #address-cells = <1>;
128 #size-cells = <0>;
129 phy0: ethernet-phy@18 {
130 reg = <18>;
131 device_type = "ethernet-phy";
132 };
133 };
134 };
135
136 uart: serial@0x4c80 {
137 compatible = "altr,uart-1.0";
138 reg = <0x00004c80 0x00000020>;
139 interrupt-parent = <&cpu>;
140 interrupts = <10>;
141 current-speed = <115200>;
142 clock-frequency = <62500000>;
143 };
144 };
145
146 cfi_flash_64m: flash@0x0 {
147 compatible = "cfi-flash";
148 reg = <0x00000000 0x04000000>;
149 bank-width = <2>;
150 device-width = <1>;
151 #address-cells = <1>;
152 #size-cells = <1>;
153
154 partition@800000 {
155 reg = <0x00800000 0x01e00000>;
156 label = "JFFS2 Filesystem";
157 };
158 };
159 };
160
161 chosen {
162 bootargs = "debug console=ttyJ0,115200";
163 };
164};
diff --git a/arch/nios2/boot/linked_dtb.S b/arch/nios2/boot/linked_dtb.S
new file mode 100644
index 000000000000..071f922db338
--- /dev/null
+++ b/arch/nios2/boot/linked_dtb.S
@@ -0,0 +1,19 @@
1/*
2 * Copyright (C) 2011 Thomas Chou <thomas@wytron.com.tw>
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 */
18.section .dtb.init.rodata,"a"
19.incbin "arch/nios2/boot/system.dtb"
diff --git a/arch/nios2/kernel/prom.c b/arch/nios2/kernel/prom.c
new file mode 100644
index 000000000000..0522d3378e3f
--- /dev/null
+++ b/arch/nios2/kernel/prom.c
@@ -0,0 +1,65 @@
1/*
2 * Device tree support
3 *
4 * Copyright (C) 2013 Altera Corporation
5 * Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
6 *
7 * Based on MIPS support for CONFIG_OF device tree support
8 *
9 * Copyright (C) 2010 Cisco Systems Inc. <dediao@cisco.com>
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program. If not, see <http://www.gnu.org/licenses/>.
23 *
24 */
25
26#include <linux/init.h>
27#include <linux/types.h>
28#include <linux/bootmem.h>
29#include <linux/of.h>
30#include <linux/of_fdt.h>
31#include <linux/io.h>
32
33#include <asm/sections.h>
34
35void __init early_init_dt_add_memory_arch(u64 base, u64 size)
36{
37 u64 kernel_start = (u64)virt_to_phys(_text);
38
39 if (!memory_size &&
40 (kernel_start >= base) && (kernel_start < (base + size)))
41 memory_size = size;
42
43}
44
45void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align)
46{
47 return alloc_bootmem_align(size, align);
48}
49
50void __init early_init_devtree(void *params)
51{
52 __be32 *dtb = (u32 *)__dtb_start;
53#if defined(CONFIG_NIOS2_DTB_AT_PHYS_ADDR)
54 if (be32_to_cpup((__be32 *)CONFIG_NIOS2_DTB_PHYS_ADDR) ==
55 OF_DT_HEADER) {
56 params = (void *)CONFIG_NIOS2_DTB_PHYS_ADDR;
57 early_init_dt_scan(params);
58 return;
59 }
60#endif
61 if (be32_to_cpu((__be32) *dtb) == OF_DT_HEADER)
62 params = (void *)__dtb_start;
63
64 early_init_dt_scan(params);
65}
diff --git a/arch/nios2/platform/platform.c b/arch/nios2/platform/platform.c
new file mode 100644
index 000000000000..d478773f758a
--- /dev/null
+++ b/arch/nios2/platform/platform.c
@@ -0,0 +1,46 @@
1/*
2 * Copyright (C) 2013 Altera Corporation
3 * Copyright (C) 2011 Thomas Chou
4 * Copyright (C) 2011 Walter Goossens
5 *
6 * This file is subject to the terms and conditions of the GNU General
7 * Public License. See the file COPYING in the main directory of this
8 * archive for more details.
9 */
10
11#include <linux/init.h>
12#include <linux/of_platform.h>
13#include <linux/of_address.h>
14#include <linux/of_fdt.h>
15#include <linux/err.h>
16#include <linux/slab.h>
17#include <linux/sys_soc.h>
18#include <linux/io.h>
19
20static int __init nios2_soc_device_init(void)
21{
22 struct soc_device *soc_dev;
23 struct soc_device_attribute *soc_dev_attr;
24 const char *machine;
25
26 soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
27 if (soc_dev_attr) {
28 machine = of_flat_dt_get_machine_name();
29 if (machine)
30 soc_dev_attr->machine = kasprintf(GFP_KERNEL, "%s",
31 machine);
32
33 soc_dev_attr->family = "Nios II";
34
35 soc_dev = soc_device_register(soc_dev_attr);
36 if (IS_ERR(soc_dev)) {
37 kfree(soc_dev_attr->machine);
38 kfree(soc_dev_attr);
39 }
40 }
41
42 return of_platform_populate(NULL, of_default_bus_match_table,
43 NULL, NULL);
44}
45
46device_initcall(nios2_soc_device_init);
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-30 18:04:42 -0500