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
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
|
/*
* Board setup routines for the Emerson KSI8560
*
* Author: Alexandr Smirnov <asmirnov@ru.mvista.com>
*
* Based on mpc85xx_ads.c maintained by Kumar Gala
*
* 2008 (c) MontaVista, Software, Inc. 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/stddef.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/kdev_t.h>
#include <linux/delay.h>
#include <linux/seq_file.h>
#include <linux/of_platform.h>
#include <asm/system.h>
#include <asm/time.h>
#include <asm/machdep.h>
#include <asm/pci-bridge.h>
#include <asm/mpic.h>
#include <mm/mmu_decl.h>
#include <asm/udbg.h>
#include <asm/prom.h>
#include <sysdev/fsl_soc.h>
#include <sysdev/fsl_pci.h>
#include <asm/cpm2.h>
#include <sysdev/cpm2_pic.h>
#define KSI8560_CPLD_HVR 0x04 /* Hardware Version Register */
#define KSI8560_CPLD_PVR 0x08 /* PLD Version Register */
#define KSI8560_CPLD_RCR1 0x30 /* Reset Command Register 1 */
#define KSI8560_CPLD_RCR1_CPUHR 0x80 /* CPU Hard Reset */
static void __iomem *cpld_base = NULL;
static void machine_restart(char *cmd)
{
if (cpld_base)
out_8(cpld_base + KSI8560_CPLD_RCR1, KSI8560_CPLD_RCR1_CPUHR);
else
printk(KERN_ERR "Can't find CPLD base, hang forever\n");
for (;;);
}
static void cpm2_cascade(unsigned int irq, struct irq_desc *desc)
{
int cascade_irq;
while ((cascade_irq = cpm2_get_irq()) >= 0)
generic_handle_irq(cascade_irq);
desc->chip->eoi(irq);
}
static void __init ksi8560_pic_init(void)
{
struct mpic *mpic;
struct resource r;
struct device_node *np;
#ifdef CONFIG_CPM2
int irq;
#endif
np = of_find_node_by_type(NULL, "open-pic");
if (np == NULL) {
printk(KERN_ERR "Could not find open-pic node\n");
return;
}
if (of_address_to_resource(np, 0, &r)) {
printk(KERN_ERR "Could not map mpic register space\n");
of_node_put(np);
return;
}
mpic = mpic_alloc(np, r.start,
MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
0, 256, " OpenPIC ");
BUG_ON(mpic == NULL);
of_node_put(np);
mpic_init(mpic);
#ifdef CONFIG_CPM2
/* Setup CPM2 PIC */
np = of_find_compatible_node(NULL, NULL, "fsl,cpm2-pic");
if (np == NULL) {
printk(KERN_ERR "PIC init: can not find fsl,cpm2-pic node\n");
return;
}
irq = irq_of_parse_and_map(np, 0);
cpm2_pic_init(np);
of_node_put(np);
set_irq_chained_handler(irq, cpm2_cascade);
#endif
}
#ifdef CONFIG_CPM2
/*
* Setup I/O ports
*/
struct cpm_pin {
int port, pin, flags;
};
static struct cpm_pin __initdata ksi8560_pins[] = {
/* SCC1 */
{3, 29, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
{3, 30, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
{3, 31, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
/* SCC2 */
{3, 26, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
{3, 27, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
{3, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
/* FCC1 */
{0, 14, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{0, 15, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{0, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{0, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{0, 18, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
{0, 19, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
{0, 20, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
{0, 21, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
{0, 26, CPM_PIN_INPUT | CPM_PIN_SECONDARY},
{0, 27, CPM_PIN_INPUT | CPM_PIN_SECONDARY},
{0, 28, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
{0, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
{0, 30, CPM_PIN_INPUT | CPM_PIN_SECONDARY},
{0, 31, CPM_PIN_INPUT | CPM_PIN_SECONDARY},
{2, 23, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK9 */
{2, 22, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK10 */
};
static void __init init_ioports(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(ksi8560_pins); i++) {
struct cpm_pin *pin = &ksi8560_pins[i];
cpm2_set_pin(pin->port, pin->pin, pin->flags);
}
cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_RX);
cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_TX);
cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_RX);
cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_TX);
cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK9, CPM_CLK_RX);
cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK10, CPM_CLK_TX);
}
#endif
/*
* Setup the architecture
*/
static void __init ksi8560_setup_arch(void)
{
struct device_node *cpld;
cpld = of_find_compatible_node(NULL, NULL, "emerson,KSI8560-cpld");
if (cpld)
cpld_base = of_iomap(cpld, 0);
else
printk(KERN_ERR "Can't find CPLD in device tree\n");
if (ppc_md.progress)
ppc_md.progress("ksi8560_setup_arch()", 0);
#ifdef CONFIG_CPM2
cpm2_reset();
init_ioports();
#endif
}
static void ksi8560_show_cpuinfo(struct seq_file *m)
{
uint pvid, svid, phid1;
pvid = mfspr(SPRN_PVR);
svid = mfspr(SPRN_SVR);
seq_printf(m, "Vendor\t\t: Emerson Network Power\n");
seq_printf(m, "Board\t\t: KSI8560\n");
if (cpld_base) {
seq_printf(m, "Hardware rev\t: %d\n",
in_8(cpld_base + KSI8560_CPLD_HVR));
seq_printf(m, "CPLD rev\t: %d\n",
in_8(cpld_base + KSI8560_CPLD_PVR));
} else
seq_printf(m, "Unknown Hardware and CPLD revs\n");
seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
seq_printf(m, "SVR\t\t: 0x%x\n", svid);
/* Display cpu Pll setting */
phid1 = mfspr(SPRN_HID1);
seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
}
static struct of_device_id __initdata of_bus_ids[] = {
{ .type = "soc", },
{ .type = "simple-bus", },
{ .name = "cpm", },
{ .name = "localbus", },
{ .compatible = "gianfar", },
{},
};
static int __init declare_of_platform_devices(void)
{
of_platform_bus_probe(NULL, of_bus_ids, NULL);
return 0;
}
machine_device_initcall(ksi8560, declare_of_platform_devices);
/*
* Called very early, device-tree isn't unflattened
*/
static int __init ksi8560_probe(void)
{
unsigned long root = of_get_flat_dt_root();
return of_flat_dt_is_compatible(root, "emerson,KSI8560");
}
define_machine(ksi8560) {
.name = "KSI8560",
.probe = ksi8560_probe,
.setup_arch = ksi8560_setup_arch,
.init_IRQ = ksi8560_pic_init,
.show_cpuinfo = ksi8560_show_cpuinfo,
.get_irq = mpic_get_irq,
.restart = machine_restart,
.calibrate_decr = generic_calibrate_decr,
};
|
