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>
26 #include <asm/machdep.h>
27 #include <asm/pci-bridge.h>
29 #include <mm/mmu_decl.h>
32 #include <sysdev/fsl_soc.h>
33 #include <sysdev/fsl_pci.h>
37 #include <sysdev/cpm2_pic.h>
42 static void cpm2_cascade(unsigned int irq
, struct irq_desc
*desc
)
44 struct irq_chip
*chip
= irq_desc_get_chip(desc
);
47 while ((cascade_irq
= cpm2_get_irq()) >= 0)
48 generic_handle_irq(cascade_irq
);
50 chip
->irq_eoi(&desc
->irq_data
);
53 #endif /* CONFIG_CPM2 */
55 static void __init
sbc8560_pic_init(void)
59 struct device_node
*np
= NULL
;
64 np
= of_find_node_by_type(np
, "open-pic");
66 printk(KERN_ERR
"Could not find open-pic node\n");
70 if (of_address_to_resource(np
, 0, &r
)) {
71 printk(KERN_ERR
"Could not map mpic register space\n");
76 mpic
= mpic_alloc(np
, r
.start
,
77 MPIC_PRIMARY
| MPIC_WANTS_RESET
| MPIC_BIG_ENDIAN
,
86 np
= of_find_compatible_node(NULL
, NULL
, "fsl,cpm2-pic");
88 printk(KERN_ERR
"PIC init: can not find fsl,cpm2-pic node\n");
91 irq
= irq_of_parse_and_map(np
, 0);
95 irq_set_chained_handler(irq
, cpm2_cascade
);
100 * Setup the architecture
104 int port
, pin
, flags
;
107 static const struct cpm_pin sbc8560_pins
[] = {
109 {3, 29, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
110 {3, 30, CPM_PIN_OUTPUT
| CPM_PIN_SECONDARY
},
111 {3, 31, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
114 {3, 26, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
115 {3, 27, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
116 {3, 28, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
119 {1, 18, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
120 {1, 19, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
121 {1, 20, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
122 {1, 21, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
123 {1, 22, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
124 {1, 23, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
125 {1, 24, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
126 {1, 25, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
127 {1, 26, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
128 {1, 27, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
129 {1, 28, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
130 {1, 29, CPM_PIN_OUTPUT
| CPM_PIN_SECONDARY
},
131 {1, 30, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
132 {1, 31, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
133 {2, 18, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
}, /* CLK14 */
134 {2, 19, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
}, /* CLK13 */
137 {1, 4, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
138 {1, 5, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
139 {1, 6, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
140 {1, 7, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
141 {1, 8, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
142 {1, 9, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
143 {1, 10, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
144 {1, 11, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
145 {1, 12, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
146 {1, 13, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
147 {1, 14, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
148 {1, 15, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
149 {1, 16, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
150 {1, 17, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
151 {2, 16, CPM_PIN_INPUT
| CPM_PIN_SECONDARY
}, /* CLK16 */
152 {2, 17, CPM_PIN_INPUT
| CPM_PIN_SECONDARY
}, /* CLK15 */
155 static void __init
init_ioports(void)
159 for (i
= 0; i
< ARRAY_SIZE(sbc8560_pins
); i
++) {
160 const struct cpm_pin
*pin
= &sbc8560_pins
[i
];
161 cpm2_set_pin(pin
->port
, pin
->pin
, pin
->flags
);
164 cpm2_clk_setup(CPM_CLK_SCC1
, CPM_BRG1
, CPM_CLK_RX
);
165 cpm2_clk_setup(CPM_CLK_SCC1
, CPM_BRG1
, CPM_CLK_TX
);
166 cpm2_clk_setup(CPM_CLK_SCC2
, CPM_BRG2
, CPM_CLK_RX
);
167 cpm2_clk_setup(CPM_CLK_SCC2
, CPM_BRG2
, CPM_CLK_TX
);
168 cpm2_clk_setup(CPM_CLK_FCC2
, CPM_CLK13
, CPM_CLK_RX
);
169 cpm2_clk_setup(CPM_CLK_FCC2
, CPM_CLK14
, CPM_CLK_TX
);
170 cpm2_clk_setup(CPM_CLK_FCC3
, CPM_CLK15
, CPM_CLK_RX
);
171 cpm2_clk_setup(CPM_CLK_FCC3
, CPM_CLK16
, CPM_CLK_TX
);
175 static void __init
sbc8560_setup_arch(void)
178 struct device_node
*np
;
182 ppc_md
.progress("sbc8560_setup_arch()", 0);
190 for_each_compatible_node(np
, "pci", "fsl,mpc8540-pci")
191 fsl_add_bridge(np
, 1);
195 static void sbc8560_show_cpuinfo(struct seq_file
*m
)
197 uint pvid
, svid
, phid1
;
199 pvid
= mfspr(SPRN_PVR
);
200 svid
= mfspr(SPRN_SVR
);
202 seq_printf(m
, "Vendor\t\t: Wind River\n");
203 seq_printf(m
, "PVR\t\t: 0x%x\n", pvid
);
204 seq_printf(m
, "SVR\t\t: 0x%x\n", svid
);
206 /* Display cpu Pll setting */
207 phid1
= mfspr(SPRN_HID1
);
208 seq_printf(m
, "PLL setting\t: 0x%x\n", ((phid1
>> 24) & 0x3f));
211 static struct of_device_id __initdata of_bus_ids
[] = {
215 { .name
= "localbus", },
216 { .compatible
= "simple-bus", },
217 { .compatible
= "gianfar", },
221 static int __init
declare_of_platform_devices(void)
223 of_platform_bus_probe(NULL
, of_bus_ids
, NULL
);
227 machine_device_initcall(sbc8560
, declare_of_platform_devices
);
230 * Called very early, device-tree isn't unflattened
232 static int __init
sbc8560_probe(void)
234 unsigned long root
= of_get_flat_dt_root();
236 return of_flat_dt_is_compatible(root
, "SBC8560");
239 #ifdef CONFIG_RTC_DRV_M48T59
240 static int __init
sbc8560_rtc_init(void)
242 struct device_node
*np
;
244 struct platform_device
*rtc_dev
;
246 np
= of_find_compatible_node(NULL
, NULL
, "m48t59");
248 printk("No RTC in DTB. Has it been eaten by wild dogs?\n");
252 of_address_to_resource(np
, 0, &res
);
255 printk("Found RTC (m48t59) at i/o 0x%x\n", res
.start
);
257 rtc_dev
= platform_device_register_simple("rtc-m48t59", 0, &res
, 1);
259 if (IS_ERR(rtc_dev
)) {
260 printk("Registering sbc8560 RTC device failed\n");
261 return PTR_ERR(rtc_dev
);
267 arch_initcall(sbc8560_rtc_init
);
271 static __u8 __iomem
*brstcr
;
273 static int __init
sbc8560_bdrstcr_init(void)
275 struct device_node
*np
;
278 np
= of_find_compatible_node(NULL
, NULL
, "wrs,sbc8560-brstcr");
280 printk(KERN_WARNING
"sbc8560: No board specific RSTCR in DTB.\n");
284 of_address_to_resource(np
, 0, &res
);
286 printk(KERN_INFO
"sbc8560: Found BRSTCR at i/o 0x%x\n", res
.start
);
288 brstcr
= ioremap(res
.start
, res
.end
- res
.start
);
290 printk(KERN_WARNING
"sbc8560: ioremap of brstcr failed.\n");
297 arch_initcall(sbc8560_bdrstcr_init
);
299 void sbc8560_rstcr_restart(char * cmd
)
303 clrbits8(brstcr
, 0x80);
308 define_machine(sbc8560
) {
310 .probe
= sbc8560_probe
,
311 .setup_arch
= sbc8560_setup_arch
,
312 .init_IRQ
= sbc8560_pic_init
,
313 .show_cpuinfo
= sbc8560_show_cpuinfo
,
314 .get_irq
= mpic_get_irq
,
315 .restart
= sbc8560_rstcr_restart
,
316 .calibrate_decr
= generic_calibrate_decr
,
317 .progress
= udbg_progress
,