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
|
/*
* Copyright 2008-2011 DENX Software Engineering GmbH
* Author: Heiko Schocher <hs@denx.de>
*
* Description:
* Keymile 83xx platform specific routines.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/reboot.h>
#include <linux/pci.h>
#include <linux/kdev_t.h>
#include <linux/major.h>
#include <linux/console.h>
#include <linux/delay.h>
#include <linux/seq_file.h>
#include <linux/root_dev.h>
#include <linux/initrd.h>
#include <linux/of_platform.h>
#include <linux/of_device.h>
#include <linux/atomic.h>
#include <linux/time.h>
#include <linux/io.h>
#include <asm/machdep.h>
#include <asm/ipic.h>
#include <asm/irq.h>
#include <asm/prom.h>
#include <asm/udbg.h>
#include <sysdev/fsl_soc.h>
#include <sysdev/fsl_pci.h>
#include <soc/fsl/qe/qe.h>
#include <soc/fsl/qe/qe_ic.h>
#include "mpc83xx.h"
#define SVR_REV(svr) (((svr) >> 0) & 0xFFFF) /* Revision field */
static void quirk_mpc8360e_qe_enet10(void)
{
/*
* handle mpc8360E Erratum QE_ENET10:
* RGMII AC values do not meet the specification
*/
uint svid = mfspr(SPRN_SVR);
struct device_node *np_par;
struct resource res;
void __iomem *base;
int ret;
np_par = of_find_node_by_name(NULL, "par_io");
if (np_par == NULL) {
pr_warn("%s couldn;t find par_io node\n", __func__);
return;
}
/* Map Parallel I/O ports registers */
ret = of_address_to_resource(np_par, 0, &res);
if (ret) {
pr_warn("%s couldn;t map par_io registers\n", __func__);
return;
}
base = ioremap(res.start, res.end - res.start + 1);
/*
* set output delay adjustments to default values according
* table 5 in Errata Rev. 5, 9/2011:
*
* write 0b01 to UCC1 bits 18:19
* write 0b01 to UCC2 option 1 bits 4:5
* write 0b01 to UCC2 option 2 bits 16:17
*/
clrsetbits_be32((base + 0xa8), 0x0c00f000, 0x04005000);
/*
* set output delay adjustments to default values according
* table 3-13 in Reference Manual Rev.3 05/2010:
*
* write 0b01 to UCC2 option 2 bits 16:17
* write 0b0101 to UCC1 bits 20:23
* write 0b0101 to UCC2 option 1 bits 24:27
*/
clrsetbits_be32((base + 0xac), 0x0000cff0, 0x00004550);
if (SVR_REV(svid) == 0x0021) {
/*
* UCC2 option 1: write 0b1010 to bits 24:27
* at address IMMRBAR+0x14AC
*/
clrsetbits_be32((base + 0xac), 0x000000f0, 0x000000a0);
} else if (SVR_REV(svid) == 0x0020) {
/*
* UCC1: write 0b11 to bits 18:19
* at address IMMRBAR+0x14A8
*/
setbits32((base + 0xa8), 0x00003000);
/*
* UCC2 option 1: write 0b11 to bits 4:5
* at address IMMRBAR+0x14A8
*/
setbits32((base + 0xa8), 0x0c000000);
/*
* UCC2 option 2: write 0b11 to bits 16:17
* at address IMMRBAR+0x14AC
*/
setbits32((base + 0xac), 0x0000c000);
}
iounmap(base);
of_node_put(np_par);
}
/* ************************************************************************
*
* Setup the architecture
*
*/
static void __init mpc83xx_km_setup_arch(void)
{
#ifdef CONFIG_QUICC_ENGINE
struct device_node *np;
#endif
if (ppc_md.progress)
ppc_md.progress("kmpbec83xx_setup_arch()", 0);
mpc83xx_setup_pci();
#ifdef CONFIG_QUICC_ENGINE
np = of_find_node_by_name(NULL, "par_io");
if (np != NULL) {
par_io_init(np);
of_node_put(np);
for_each_node_by_name(np, "spi")
par_io_of_config(np);
for_each_node_by_name(np, "ucc")
par_io_of_config(np);
/* Only apply this quirk when par_io is available */
np = of_find_compatible_node(NULL, "network", "ucc_geth");
if (np != NULL) {
quirk_mpc8360e_qe_enet10();
of_node_put(np);
}
}
#endif /* CONFIG_QUICC_ENGINE */
}
machine_device_initcall(mpc83xx_km, mpc83xx_declare_of_platform_devices);
/* list of the supported boards */
static char *board[] __initdata = {
"Keymile,KMETER1",
"Keymile,kmpbec8321",
NULL
};
/*
* Called very early, MMU is off, device-tree isn't unflattened
*/
static int __init mpc83xx_km_probe(void)
{
unsigned long node = of_get_flat_dt_root();
int i = 0;
while (board[i]) {
if (of_flat_dt_is_compatible(node, board[i]))
break;
i++;
}
return (board[i] != NULL);
}
define_machine(mpc83xx_km) {
.name = "mpc83xx-km-platform",
.probe = mpc83xx_km_probe,
.setup_arch = mpc83xx_km_setup_arch,
.init_IRQ = mpc83xx_ipic_and_qe_init_IRQ,
.get_irq = ipic_get_irq,
.restart = mpc83xx_restart,
.time_init = mpc83xx_time_init,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};
|
