1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
/*
* Copyright 2012 (C), Jason Cooper <jason@lakedaemon.net>
*
* arch/arm/mach-mvebu/kirkwood.c
*
* Flattened Device Tree board initialization
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <linux/clk.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/mbus.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_net.h>
#include <linux/of_platform.h>
#include <linux/slab.h>
#include <asm/hardware/cache-feroceon-l2.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include "kirkwood.h"
#include "kirkwood-pm.h"
#include "common.h"
static struct resource kirkwood_cpufreq_resources[] = {
[0] = {
.start = CPU_CONTROL_PHYS,
.end = CPU_CONTROL_PHYS + 3,
.flags = IORESOURCE_MEM,
},
};
static struct platform_device kirkwood_cpufreq_device = {
.name = "kirkwood-cpufreq",
.id = -1,
.num_resources = ARRAY_SIZE(kirkwood_cpufreq_resources),
.resource = kirkwood_cpufreq_resources,
};
static void __init kirkwood_cpufreq_init(void)
{
platform_device_register(&kirkwood_cpufreq_device);
}
static struct resource kirkwood_cpuidle_resource[] = {
{
.flags = IORESOURCE_MEM,
.start = DDR_OPERATION_BASE,
.end = DDR_OPERATION_BASE + 3,
},
};
static struct platform_device kirkwood_cpuidle = {
.name = "kirkwood_cpuidle",
.id = -1,
.resource = kirkwood_cpuidle_resource,
.num_resources = 1,
};
static void __init kirkwood_cpuidle_init(void)
{
platform_device_register(&kirkwood_cpuidle);
}
#define MV643XX_ETH_MAC_ADDR_LOW 0x0414
#define MV643XX_ETH_MAC_ADDR_HIGH 0x0418
static void __init kirkwood_dt_eth_fixup(void)
{
struct device_node *np;
/*
* The ethernet interfaces forget the MAC address assigned by u-boot
* if the clocks are turned off. Usually, u-boot on kirkwood boards
* has no DT support to properly set local-mac-address property.
* As a workaround, we get the MAC address from mv643xx_eth registers
* and update the port device node if no valid MAC address is set.
*/
for_each_compatible_node(np, NULL, "marvell,kirkwood-eth-port") {
struct device_node *pnp = of_get_parent(np);
struct clk *clk;
struct property *pmac;
void __iomem *io;
u8 *macaddr;
u32 reg;
if (!pnp)
continue;
/* skip disabled nodes or nodes with valid MAC address*/
if (!of_device_is_available(pnp) || of_get_mac_address(np))
goto eth_fixup_skip;
clk = of_clk_get(pnp, 0);
if (IS_ERR(clk))
goto eth_fixup_skip;
io = of_iomap(pnp, 0);
if (!io)
goto eth_fixup_no_map;
/* ensure port clock is not gated to not hang CPU */
clk_prepare_enable(clk);
/* store MAC address register contents in local-mac-address */
pr_err(FW_INFO "%pOF: local-mac-address is not set\n", np);
pmac = kzalloc(sizeof(*pmac) + 6, GFP_KERNEL);
if (!pmac)
goto eth_fixup_no_mem;
pmac->value = pmac + 1;
pmac->length = 6;
pmac->name = kstrdup("local-mac-address", GFP_KERNEL);
if (!pmac->name) {
kfree(pmac);
goto eth_fixup_no_mem;
}
macaddr = pmac->value;
reg = readl(io + MV643XX_ETH_MAC_ADDR_HIGH);
macaddr[0] = (reg >> 24) & 0xff;
macaddr[1] = (reg >> 16) & 0xff;
macaddr[2] = (reg >> 8) & 0xff;
macaddr[3] = reg & 0xff;
reg = readl(io + MV643XX_ETH_MAC_ADDR_LOW);
macaddr[4] = (reg >> 8) & 0xff;
macaddr[5] = reg & 0xff;
of_update_property(np, pmac);
eth_fixup_no_mem:
iounmap(io);
clk_disable_unprepare(clk);
eth_fixup_no_map:
clk_put(clk);
eth_fixup_skip:
of_node_put(pnp);
}
}
/*
* Disable propagation of mbus errors to the CPU local bus, as this
* causes mbus errors (which can occur for example for PCI aborts) to
* throw CPU aborts, which we're not set up to deal with.
*/
static void kirkwood_disable_mbus_error_propagation(void)
{
void __iomem *cpu_config;
cpu_config = ioremap(CPU_CONFIG_PHYS, 4);
writel(readl(cpu_config) & ~CPU_CONFIG_ERROR_PROP, cpu_config);
}
static struct of_dev_auxdata auxdata[] __initdata = {
OF_DEV_AUXDATA("marvell,kirkwood-audio", 0xf10a0000,
"mvebu-audio", NULL),
{ /* sentinel */ }
};
static void __init kirkwood_dt_init(void)
{
kirkwood_disable_mbus_error_propagation();
BUG_ON(mvebu_mbus_dt_init(false));
#ifdef CONFIG_CACHE_FEROCEON_L2
feroceon_of_init();
#endif
kirkwood_cpufreq_init();
kirkwood_cpuidle_init();
kirkwood_pm_init();
kirkwood_dt_eth_fixup();
of_platform_default_populate(NULL, auxdata, NULL);
}
static const char * const kirkwood_dt_board_compat[] __initconst = {
"marvell,kirkwood",
NULL
};
DT_MACHINE_START(KIRKWOOD_DT, "Marvell Kirkwood (Flattened Device Tree)")
/* Maintainer: Jason Cooper <jason@lakedaemon.net> */
.init_machine = kirkwood_dt_init,
.restart = mvebu_restart,
.dt_compat = kirkwood_dt_board_compat,
MACHINE_END
|
