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powerpc/85xx: consolidate of_platform_bus_probe calls
[deliverable/linux.git] / arch / powerpc / platforms / 85xx / sbc8560.c
CommitLineData
2c198061
PG		 1/*
2 * Wind River SBC8560 setup and early boot code.
3 *
4 * Copyright 2007 Wind River Systems Inc.
5 *
6 * By Paul Gortmaker (see MAINTAINERS for contact information)
7 *
8 * Based largely on the MPC8560ADS support - Copyright 2005 Freescale Inc.
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 */
15
16#include <linux/stddef.h>
17#include <linux/kernel.h>
18#include <linux/pci.h>
19#include <linux/kdev_t.h>
20#include <linux/delay.h>
21#include <linux/seq_file.h>
22#include <linux/of_platform.h>
23
24#include <asm/system.h>
25#include <asm/time.h>
26#include <asm/machdep.h>
27#include <asm/pci-bridge.h>
28#include <asm/mpic.h>
29#include <mm/mmu_decl.h>
30#include <asm/udbg.h>
31
32#include <sysdev/fsl_soc.h>
33#include <sysdev/fsl_pci.h>
34
543a07b1
DES		 35#include "mpc85xx.h"
36
2c198061
PG		 37#ifdef CONFIG_CPM2
38#include <asm/cpm2.h>
39#include <sysdev/cpm2_pic.h>
40#endif
41
2c198061
PG		 42static void __init sbc8560_pic_init(void)
43{
44 struct mpic *mpic;
45 struct resource r;
46 struct device_node *np = NULL;
2c198061
PG		 47
48 np = of_find_node_by_type(np, "open-pic");
49 if (!np) {
50 printk(KERN_ERR "Could not find open-pic node\n");
51 return;
52 }
53
54 if (of_address_to_resource(np, 0, &r)) {
55 printk(KERN_ERR "Could not map mpic register space\n");
56 of_node_put(np);
57 return;
58 }
59
60 mpic = mpic_alloc(np, r.start,
61 MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
62 0, 256, " OpenPIC ");
63 BUG_ON(mpic == NULL);
64 of_node_put(np);
65
66 mpic_init(mpic);
67
543a07b1 68 mpc85xx_cpm2_pic_init();
2c198061
PG		 69}
70
71/*
72 * Setup the architecture
73 */
74#ifdef CONFIG_CPM2
75struct cpm_pin {
76 int port, pin, flags;
77};
78
79static const struct cpm_pin sbc8560_pins[] = {
80 /* SCC1 */
81 {3, 29, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
82 {3, 30, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
83 {3, 31, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
84
85 /* SCC2 */
86 {3, 26, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
87 {3, 27, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
88 {3, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
89
90 /* FCC2 */
91 {1, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
92 {1, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
93 {1, 20, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
94 {1, 21, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
95 {1, 22, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
96 {1, 23, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
97 {1, 24, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
98 {1, 25, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
99 {1, 26, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
100 {1, 27, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
101 {1, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
102 {1, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
103 {1, 30, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
104 {1, 31, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
105 {2, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK14 */
106 {2, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK13 */
107
108 /* FCC3 */
109 {1, 4, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
110 {1, 5, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
111 {1, 6, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
112 {1, 7, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
113 {1, 8, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
114 {1, 9, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
115 {1, 10, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
116 {1, 11, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
117 {1, 12, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
118 {1, 13, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
119 {1, 14, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
120 {1, 15, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
121 {1, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
122 {1, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
123 {2, 16, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* CLK16 */
124 {2, 17, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* CLK15 */
125};
126
127static void __init init_ioports(void)
128{
129 int i;
130
131 for (i = 0; i < ARRAY_SIZE(sbc8560_pins); i++) {
66576a87 132 const struct cpm_pin *pin = &sbc8560_pins[i];
2c198061
PG		 133 cpm2_set_pin(pin->port, pin->pin, pin->flags);
134 }
135
136 cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_RX);
137 cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_TX);
138 cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_RX);
139 cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_TX);
140 cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK13, CPM_CLK_RX);
141 cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK14, CPM_CLK_TX);
142 cpm2_clk_setup(CPM_CLK_FCC3, CPM_CLK15, CPM_CLK_RX);
143 cpm2_clk_setup(CPM_CLK_FCC3, CPM_CLK16, CPM_CLK_TX);
144}
145#endif
146
147static void __init sbc8560_setup_arch(void)
148{
149#ifdef CONFIG_PCI
150 struct device_node *np;
151#endif
152
153 if (ppc_md.progress)
154 ppc_md.progress("sbc8560_setup_arch()", 0);
155
156#ifdef CONFIG_CPM2
157 cpm2_reset();
158 init_ioports();
159#endif
160
161#ifdef CONFIG_PCI
162 for_each_compatible_node(np, "pci", "fsl,mpc8540-pci")
163 fsl_add_bridge(np, 1);
164#endif
165}
166
167static void sbc8560_show_cpuinfo(struct seq_file *m)
168{
169 uint pvid, svid, phid1;
2c198061
PG		 170
171 pvid = mfspr(SPRN_PVR);
172 svid = mfspr(SPRN_SVR);
173
174 seq_printf(m, "Vendor\t\t: Wind River\n");
2c198061
PG		 175 seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
176 seq_printf(m, "SVR\t\t: 0x%x\n", svid);
177
178 /* Display cpu Pll setting */
179 phid1 = mfspr(SPRN_HID1);
180 seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
2c198061
PG		 181}
182
46d026ac 183machine_device_initcall(sbc8560, mpc85xx_common_publish_devices);
2c198061
PG		 184
185/*
186 * Called very early, device-tree isn't unflattened
187 */
188static int __init sbc8560_probe(void)
189{
190 unsigned long root = of_get_flat_dt_root();
191
192 return of_flat_dt_is_compatible(root, "SBC8560");
193}
194
195#ifdef CONFIG_RTC_DRV_M48T59
196static int __init sbc8560_rtc_init(void)
197{
198 struct device_node *np;
199 struct resource res;
200 struct platform_device *rtc_dev;
201
202 np = of_find_compatible_node(NULL, NULL, "m48t59");
203 if (np == NULL) {
204 printk("No RTC in DTB. Has it been eaten by wild dogs?\n");
205 return -ENODEV;
206 }
207
208 of_address_to_resource(np, 0, &res);
209 of_node_put(np);
210
211 printk("Found RTC (m48t59) at i/o 0x%x\n", res.start);
212
213 rtc_dev = platform_device_register_simple("rtc-m48t59", 0, &res, 1);
214
215 if (IS_ERR(rtc_dev)) {
216 printk("Registering sbc8560 RTC device failed\n");
217 return PTR_ERR(rtc_dev);
218 }
219
220 return 0;
221}
222
223arch_initcall(sbc8560_rtc_init);
224
225#endif /* M48T59 */
226
7792da85
LL		 227static __u8 __iomem *brstcr;
228
229static int __init sbc8560_bdrstcr_init(void)
230{
231 struct device_node *np;
232 struct resource res;
233
234 np = of_find_compatible_node(NULL, NULL, "wrs,sbc8560-brstcr");
235 if (np == NULL) {
236 printk(KERN_WARNING "sbc8560: No board specific RSTCR in DTB.\n");
237 return -ENODEV;
238 }
239
240 of_address_to_resource(np, 0, &res);
241
c72fa7df 242 printk(KERN_INFO "sbc8560: Found BRSTCR at %pR\n", &res);
7792da85 243
28f65c11 244 brstcr = ioremap(res.start, resource_size(&res));
7792da85
LL		 245 if(!brstcr)
246 printk(KERN_WARNING "sbc8560: ioremap of brstcr failed.\n");
247
248 of_node_put(np);
249
250 return 0;
251}
252
253arch_initcall(sbc8560_bdrstcr_init);
254
255void sbc8560_rstcr_restart(char * cmd)
256{
257 local_irq_disable();
258 if(brstcr)
259 clrbits8(brstcr, 0x80);
260
261 while(1);
262}
263
2c198061
PG		 264define_machine(sbc8560) {
265 .name = "SBC8560",
266 .probe = sbc8560_probe,
267 .setup_arch = sbc8560_setup_arch,
268 .init_IRQ = sbc8560_pic_init,
269 .show_cpuinfo = sbc8560_show_cpuinfo,
270 .get_irq = mpic_get_irq,
7792da85 271 .restart = sbc8560_rstcr_restart,
2c198061
PG		 272 .calibrate_decr = generic_calibrate_decr,
273 .progress = udbg_progress,
274};
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