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-rw-r--r--arch/powerpc/platforms/83xx/km83xx.c207
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diff --git a/arch/powerpc/platforms/83xx/km83xx.c b/arch/powerpc/platforms/83xx/km83xx.c
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1/*
2 * Copyright 2008-2011 DENX Software Engineering GmbH
3 * Author: Heiko Schocher <hs@denx.de>
4 *
5 * Description:
6 * Keymile KMETER1 board specific routines.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 */
13
14#include <linux/stddef.h>
15#include <linux/kernel.h>
16#include <linux/init.h>
17#include <linux/errno.h>
18#include <linux/reboot.h>
19#include <linux/pci.h>
20#include <linux/kdev_t.h>
21#include <linux/major.h>
22#include <linux/console.h>
23#include <linux/delay.h>
24#include <linux/seq_file.h>
25#include <linux/root_dev.h>
26#include <linux/initrd.h>
27#include <linux/of_platform.h>
28#include <linux/of_device.h>
29
30#include <asm/system.h>
31#include <asm/atomic.h>
32#include <asm/time.h>
33#include <asm/io.h>
34#include <asm/machdep.h>
35#include <asm/ipic.h>
36#include <asm/irq.h>
37#include <asm/prom.h>
38#include <asm/udbg.h>
39#include <sysdev/fsl_soc.h>
40#include <sysdev/fsl_pci.h>
41#include <asm/qe.h>
42#include <asm/qe_ic.h>
43
44#include "mpc83xx.h"
45
46#define SVR_REV(svr) (((svr) >> 0) & 0xFFFF) /* Revision field */
47/* ************************************************************************
48 *
49 * Setup the architecture
50 *
51 */
52static void __init mpc83xx_km_setup_arch(void)
53{
54 struct device_node *np;
55
56 if (ppc_md.progress)
57 ppc_md.progress("kmpbec83xx_setup_arch()", 0);
58
59#ifdef CONFIG_PCI
60 for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
61 mpc83xx_add_bridge(np);
62#endif
63
64#ifdef CONFIG_QUICC_ENGINE
65 qe_reset();
66
67 np = of_find_node_by_name(NULL, "par_io");
68 if (np != NULL) {
69 par_io_init(np);
70 of_node_put(np);
71
72 for_each_node_by_name(np, "spi")
73 par_io_of_config(np);
74
75 for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;)
76 par_io_of_config(np);
77 }
78
79 np = of_find_compatible_node(NULL, "network", "ucc_geth");
80 if (np != NULL) {
81 uint svid;
82
83 /* handle mpc8360ea rev.2.1 erratum 2: RGMII Timing */
84 svid = mfspr(SPRN_SVR);
85 if (SVR_REV(svid) == 0x0021) {
86 struct device_node *np_par;
87 struct resource res;
88 void __iomem *base;
89 int ret;
90
91 np_par = of_find_node_by_name(NULL, "par_io");
92 if (np_par == NULL) {
93 printk(KERN_WARNING "%s couldn;t find par_io node\n",
94 __func__);
95 return;
96 }
97 /* Map Parallel I/O ports registers */
98 ret = of_address_to_resource(np_par, 0, &res);
99 if (ret) {
100 printk(KERN_WARNING "%s couldn;t map par_io registers\n",
101 __func__);
102 return;
103 }
104 base = ioremap(res.start, res.end - res.start + 1);
105
106 /*
107 * IMMR + 0x14A8[4:5] = 11 (clk delay for UCC 2)
108 * IMMR + 0x14A8[18:19] = 11 (clk delay for UCC 1)
109 */
110 setbits32((base + 0xa8), 0x0c003000);
111
112 /*
113 * IMMR + 0x14AC[20:27] = 10101010
114 * (data delay for both UCC's)
115 */
116 clrsetbits_be32((base + 0xac), 0xff0, 0xaa0);
117 iounmap(base);
118 of_node_put(np_par);
119 }
120 of_node_put(np);
121 }
122#endif /* CONFIG_QUICC_ENGINE */
123}
124
125static struct of_device_id kmpbec83xx_ids[] = {
126 { .type = "soc", },
127 { .compatible = "soc", },
128 { .compatible = "simple-bus", },
129 { .type = "qe", },
130 { .compatible = "fsl,qe", },
131 {},
132};
133
134static int __init kmeter_declare_of_platform_devices(void)
135{
136 /* Publish the QE devices */
137 of_platform_bus_probe(NULL, kmpbec83xx_ids, NULL);
138
139 return 0;
140}
141machine_device_initcall(mpc83xx_km, kmeter_declare_of_platform_devices);
142
143static void __init mpc83xx_km_init_IRQ(void)
144{
145 struct device_node *np;
146
147 np = of_find_compatible_node(NULL, NULL, "fsl,pq2pro-pic");
148 if (!np) {
149 np = of_find_node_by_type(NULL, "ipic");
150 if (!np)
151 return;
152 }
153
154 ipic_init(np, 0);
155
156 /* Initialize the default interrupt mapping priorities,
157 * in case the boot rom changed something on us.
158 */
159 ipic_set_default_priority();
160 of_node_put(np);
161
162#ifdef CONFIG_QUICC_ENGINE
163 np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
164 if (!np) {
165 np = of_find_node_by_type(NULL, "qeic");
166 if (!np)
167 return;
168 }
169 qe_ic_init(np, 0, qe_ic_cascade_low_ipic, qe_ic_cascade_high_ipic);
170 of_node_put(np);
171#endif /* CONFIG_QUICC_ENGINE */
172}
173
174/* list of the supported boards */
175static char *board[] __initdata = {
176 "Keymile,KMETER1",
177 "Keymile,kmpbec8321",
178 NULL
179};
180
181/*
182 * Called very early, MMU is off, device-tree isn't unflattened
183 */
184static int __init mpc83xx_km_probe(void)
185{
186 unsigned long node = of_get_flat_dt_root();
187 int i = 0;
188
189 while (board[i]) {
190 if (of_flat_dt_is_compatible(node, board[i]))
191 break;
192 i++;
193 }
194 return (board[i] != NULL);
195}
196
197define_machine(mpc83xx_km) {
198 .name = "mpc83xx-km-platform",
199 .probe = mpc83xx_km_probe,
200 .setup_arch = mpc83xx_km_setup_arch,
201 .init_IRQ = mpc83xx_km_init_IRQ,
202 .get_irq = ipic_get_irq,
203 .restart = mpc83xx_restart,
204 .time_init = mpc83xx_time_init,
205 .calibrate_decr = generic_calibrate_decr,
206 .progress = udbg_progress,
207};