eeepc-laptop: Register as a pci-hotplug device
[linux-2.6/linux-acpi-2.6.git] / arch / powerpc / platforms / 85xx / sbc8560.c
blobcc27807a8b64ab657a789d0b41ba2b111ef0d952
1 /*
2 * Wind River SBC8560 setup and early boot code.
4 * Copyright 2007 Wind River Systems Inc.
6 * By Paul Gortmaker (see MAINTAINERS for contact information)
8 * Based largely on the MPC8560ADS support - Copyright 2005 Freescale Inc.
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.
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>
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>
32 #include <sysdev/fsl_soc.h>
33 #include <sysdev/fsl_pci.h>
35 #ifdef CONFIG_CPM2
36 #include <asm/cpm2.h>
37 #include <sysdev/cpm2_pic.h>
38 #endif
40 #ifdef CONFIG_CPM2
42 static void cpm2_cascade(unsigned int irq, struct irq_desc *desc)
44 int cascade_irq;
46 while ((cascade_irq = cpm2_get_irq()) >= 0)
47 generic_handle_irq(cascade_irq);
49 desc->chip->eoi(irq);
52 #endif /* CONFIG_CPM2 */
54 static void __init sbc8560_pic_init(void)
56 struct mpic *mpic;
57 struct resource r;
58 struct device_node *np = NULL;
59 #ifdef CONFIG_CPM2
60 int irq;
61 #endif
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;
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;
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);
81 mpic_init(mpic);
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;
90 irq = irq_of_parse_and_map(np, 0);
92 cpm2_pic_init(np);
93 of_node_put(np);
94 set_irq_chained_handler(irq, cpm2_cascade);
95 #endif
99 * Setup the architecture
101 #ifdef CONFIG_CPM2
102 struct cpm_pin {
103 int port, pin, flags;
106 static 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},
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},
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 */
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 */
154 static void __init init_ioports(void)
156 int i;
158 for (i = 0; i < ARRAY_SIZE(sbc8560_pins); i++) {
159 const struct cpm_pin *pin = &sbc8560_pins[i];
160 cpm2_set_pin(pin->port, pin->pin, pin->flags);
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);
172 #endif
174 static void __init sbc8560_setup_arch(void)
176 #ifdef CONFIG_PCI
177 struct device_node *np;
178 #endif
180 if (ppc_md.progress)
181 ppc_md.progress("sbc8560_setup_arch()", 0);
183 #ifdef CONFIG_CPM2
184 cpm2_reset();
185 init_ioports();
186 #endif
188 #ifdef CONFIG_PCI
189 for_each_compatible_node(np, "pci", "fsl,mpc8540-pci")
190 fsl_add_bridge(np, 1);
191 #endif
194 static void sbc8560_show_cpuinfo(struct seq_file *m)
196 uint pvid, svid, phid1;
198 pvid = mfspr(SPRN_PVR);
199 svid = mfspr(SPRN_SVR);
201 seq_printf(m, "Vendor\t\t: Wind River\n");
202 seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
203 seq_printf(m, "SVR\t\t: 0x%x\n", svid);
205 /* Display cpu Pll setting */
206 phid1 = mfspr(SPRN_HID1);
207 seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
210 static struct of_device_id __initdata of_bus_ids[] = {
211 { .name = "soc", },
212 { .type = "soc", },
213 { .name = "cpm", },
214 { .name = "localbus", },
215 { .compatible = "simple-bus", },
216 { .compatible = "gianfar", },
220 static int __init declare_of_platform_devices(void)
222 of_platform_bus_probe(NULL, of_bus_ids, NULL);
224 return 0;
226 machine_device_initcall(sbc8560, declare_of_platform_devices);
229 * Called very early, device-tree isn't unflattened
231 static int __init sbc8560_probe(void)
233 unsigned long root = of_get_flat_dt_root();
235 return of_flat_dt_is_compatible(root, "SBC8560");
238 #ifdef CONFIG_RTC_DRV_M48T59
239 static int __init sbc8560_rtc_init(void)
241 struct device_node *np;
242 struct resource res;
243 struct platform_device *rtc_dev;
245 np = of_find_compatible_node(NULL, NULL, "m48t59");
246 if (np == NULL) {
247 printk("No RTC in DTB. Has it been eaten by wild dogs?\n");
248 return -ENODEV;
251 of_address_to_resource(np, 0, &res);
252 of_node_put(np);
254 printk("Found RTC (m48t59) at i/o 0x%x\n", res.start);
256 rtc_dev = platform_device_register_simple("rtc-m48t59", 0, &res, 1);
258 if (IS_ERR(rtc_dev)) {
259 printk("Registering sbc8560 RTC device failed\n");
260 return PTR_ERR(rtc_dev);
263 return 0;
266 arch_initcall(sbc8560_rtc_init);
268 #endif /* M48T59 */
270 define_machine(sbc8560) {
271 .name = "SBC8560",
272 .probe = sbc8560_probe,
273 .setup_arch = sbc8560_setup_arch,
274 .init_IRQ = sbc8560_pic_init,
275 .show_cpuinfo = sbc8560_show_cpuinfo,
276 .get_irq = mpic_get_irq,
277 .restart = fsl_rstcr_restart,
278 .calibrate_decr = generic_calibrate_decr,
279 .progress = udbg_progress,