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-rw-r--r--arch/powerpc/platforms/85xx/sbc8560.c283
1 files changed, 283 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/85xx/sbc8560.c b/arch/powerpc/platforms/85xx/sbc8560.c
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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
35#ifdef CONFIG_CPM2
36#include <asm/cpm2.h>
37#include <sysdev/cpm2_pic.h>
38#endif
39
40#ifdef CONFIG_CPM2
41
42static void cpm2_cascade(unsigned int irq, struct irq_desc *desc)
43{
44 int cascade_irq;
45
46 while ((cascade_irq = cpm2_get_irq()) >= 0)
47 generic_handle_irq(cascade_irq);
48
49 desc->chip->eoi(irq);
50}
51
52#endif /* CONFIG_CPM2 */
53
54static void __init sbc8560_pic_init(void)
55{
56 struct mpic *mpic;
57 struct resource r;
58 struct device_node *np = NULL;
59#ifdef CONFIG_CPM2
60 int irq;
61#endif
62
63 np = of_find_node_by_type(np, "open-pic");
64 if (!np) {
65 printk(KERN_ERR "Could not find open-pic node\n");
66 return;
67 }
68
69 if (of_address_to_resource(np, 0, &r)) {
70 printk(KERN_ERR "Could not map mpic register space\n");
71 of_node_put(np);
72 return;
73 }
74
75 mpic = mpic_alloc(np, r.start,
76 MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
77 0, 256, " OpenPIC ");
78 BUG_ON(mpic == NULL);
79 of_node_put(np);
80
81 mpic_init(mpic);
82
83#ifdef CONFIG_CPM2
84 /* Setup CPM2 PIC */
85 np = of_find_compatible_node(NULL, NULL, "fsl,cpm2-pic");
86 if (np == NULL) {
87 printk(KERN_ERR "PIC init: can not find fsl,cpm2-pic node\n");
88 return;
89 }
90 irq = irq_of_parse_and_map(np, 0);
91
92 cpm2_pic_init(np);
93 of_node_put(np);
94 set_irq_chained_handler(irq, cpm2_cascade);
95#endif
96}
97
98/*
99 * Setup the architecture
100 */
101#ifdef CONFIG_CPM2
102struct cpm_pin {
103 int port, pin, flags;
104};
105
106static const struct cpm_pin sbc8560_pins[] = {
107 /* SCC1 */
108 {3, 29, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
109 {3, 30, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
110 {3, 31, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
111
112 /* SCC2 */
113 {3, 26, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
114 {3, 27, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
115 {3, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
116
117 /* FCC2 */
118 {1, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
119 {1, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
120 {1, 20, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
121 {1, 21, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
122 {1, 22, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
123 {1, 23, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
124 {1, 24, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
125 {1, 25, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
126 {1, 26, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
127 {1, 27, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
128 {1, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
129 {1, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
130 {1, 30, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
131 {1, 31, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
132 {2, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK14 */
133 {2, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK13 */
134
135 /* FCC3 */
136 {1, 4, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
137 {1, 5, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
138 {1, 6, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
139 {1, 7, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
140 {1, 8, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
141 {1, 9, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
142 {1, 10, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
143 {1, 11, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
144 {1, 12, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
145 {1, 13, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
146 {1, 14, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
147 {1, 15, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
148 {1, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
149 {1, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
150 {2, 16, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* CLK16 */
151 {2, 17, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* CLK15 */
152};
153
154static void __init init_ioports(void)
155{
156 int i;
157
158 for (i = 0; i < ARRAY_SIZE(sbc8560_pins); i++) {
159 struct cpm_pin *pin = &sbc8560_pins[i];
160 cpm2_set_pin(pin->port, pin->pin, pin->flags);
161 }
162
163 cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_RX);
164 cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_TX);
165 cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_RX);
166 cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_TX);
167 cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK13, CPM_CLK_RX);
168 cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK14, CPM_CLK_TX);
169 cpm2_clk_setup(CPM_CLK_FCC3, CPM_CLK15, CPM_CLK_RX);
170 cpm2_clk_setup(CPM_CLK_FCC3, CPM_CLK16, CPM_CLK_TX);
171}
172#endif
173
174static void __init sbc8560_setup_arch(void)
175{
176#ifdef CONFIG_PCI
177 struct device_node *np;
178#endif
179
180 if (ppc_md.progress)
181 ppc_md.progress("sbc8560_setup_arch()", 0);
182
183#ifdef CONFIG_CPM2
184 cpm2_reset();
185 init_ioports();
186#endif
187
188#ifdef CONFIG_PCI
189 for_each_compatible_node(np, "pci", "fsl,mpc8540-pci")
190 fsl_add_bridge(np, 1);
191#endif
192}
193
194static void sbc8560_show_cpuinfo(struct seq_file *m)
195{
196 uint pvid, svid, phid1;
197 uint memsize = total_memory;
198
199 pvid = mfspr(SPRN_PVR);
200 svid = mfspr(SPRN_SVR);
201
202 seq_printf(m, "Vendor\t\t: Wind River\n");
203 seq_printf(m, "Machine\t\t: SBC8560\n");
204 seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
205 seq_printf(m, "SVR\t\t: 0x%x\n", svid);
206
207 /* Display cpu Pll setting */
208 phid1 = mfspr(SPRN_HID1);
209 seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
210
211 /* Display the amount of memory */
212 seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
213}
214
215static struct of_device_id __initdata of_bus_ids[] = {
216 { .name = "soc", },
217 { .type = "soc", },
218 { .name = "cpm", },
219 { .name = "localbus", },
220 {},
221};
222
223static int __init declare_of_platform_devices(void)
224{
225 of_platform_bus_probe(NULL, of_bus_ids, NULL);
226
227 return 0;
228}
229machine_device_initcall(sbc8560, declare_of_platform_devices);
230
231/*
232 * Called very early, device-tree isn't unflattened
233 */
234static int __init sbc8560_probe(void)
235{
236 unsigned long root = of_get_flat_dt_root();
237
238 return of_flat_dt_is_compatible(root, "SBC8560");
239}
240
241#ifdef CONFIG_RTC_DRV_M48T59
242static int __init sbc8560_rtc_init(void)
243{
244 struct device_node *np;
245 struct resource res;
246 struct platform_device *rtc_dev;
247
248 np = of_find_compatible_node(NULL, NULL, "m48t59");
249 if (np == NULL) {
250 printk("No RTC in DTB. Has it been eaten by wild dogs?\n");
251 return -ENODEV;
252 }
253
254 of_address_to_resource(np, 0, &res);
255 of_node_put(np);
256
257 printk("Found RTC (m48t59) at i/o 0x%x\n", res.start);
258
259 rtc_dev = platform_device_register_simple("rtc-m48t59", 0, &res, 1);
260
261 if (IS_ERR(rtc_dev)) {
262 printk("Registering sbc8560 RTC device failed\n");
263 return PTR_ERR(rtc_dev);
264 }
265
266 return 0;
267}
268
269arch_initcall(sbc8560_rtc_init);
270
271#endif /* M48T59 */
272
273define_machine(sbc8560) {
274 .name = "SBC8560",
275 .probe = sbc8560_probe,
276 .setup_arch = sbc8560_setup_arch,
277 .init_IRQ = sbc8560_pic_init,
278 .show_cpuinfo = sbc8560_show_cpuinfo,
279 .get_irq = mpic_get_irq,
280 .restart = fsl_rstcr_restart,
281 .calibrate_decr = generic_calibrate_decr,
282 .progress = udbg_progress,
283};
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