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[cris-mirror.git] / arch / powerpc / platforms / 86xx / sbc8641d.c
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1 /*
2 * SBC8641D board specific routines
4 * Copyright 2008 Wind River Systems Inc.
6 * By Paul Gortmaker (see MAINTAINERS for contact information)
8 * Based largely on the 8641 HPCN support by Freescale Semiconductor 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/mpc86xx.h>
29 #include <asm/prom.h>
30 #include <mm/mmu_decl.h>
31 #include <asm/udbg.h>
33 #include <asm/mpic.h>
35 #include <sysdev/fsl_pci.h>
36 #include <sysdev/fsl_soc.h>
38 #include "mpc86xx.h"
40 static void __init
41 sbc8641_setup_arch(void)
43 #ifdef CONFIG_PCI
44 struct device_node *np;
45 #endif
47 if (ppc_md.progress)
48 ppc_md.progress("sbc8641_setup_arch()", 0);
50 #ifdef CONFIG_PCI
51 for_each_compatible_node(np, "pci", "fsl,mpc8641-pcie")
52 fsl_add_bridge(np, 0);
53 #endif
55 printk("SBC8641 board from Wind River\n");
57 #ifdef CONFIG_SMP
58 mpc86xx_smp_init();
59 #endif
63 static void
64 sbc8641_show_cpuinfo(struct seq_file *m)
66 uint svid = mfspr(SPRN_SVR);
68 seq_printf(m, "Vendor\t\t: Wind River Systems\n");
70 seq_printf(m, "SVR\t\t: 0x%x\n", svid);
75 * Called very early, device-tree isn't unflattened
77 static int __init sbc8641_probe(void)
79 unsigned long root = of_get_flat_dt_root();
81 if (of_flat_dt_is_compatible(root, "wind,sbc8641"))
82 return 1; /* Looks good */
84 return 0;
87 static long __init
88 mpc86xx_time_init(void)
90 unsigned int temp;
92 /* Set the time base to zero */
93 mtspr(SPRN_TBWL, 0);
94 mtspr(SPRN_TBWU, 0);
96 temp = mfspr(SPRN_HID0);
97 temp |= HID0_TBEN;
98 mtspr(SPRN_HID0, temp);
99 asm volatile("isync");
101 return 0;
104 static __initdata struct of_device_id of_bus_ids[] = {
105 { .compatible = "simple-bus", },
109 static int __init declare_of_platform_devices(void)
111 of_platform_bus_probe(NULL, of_bus_ids, NULL);
113 return 0;
115 machine_device_initcall(sbc8641, declare_of_platform_devices);
117 define_machine(sbc8641) {
118 .name = "SBC8641D",
119 .probe = sbc8641_probe,
120 .setup_arch = sbc8641_setup_arch,
121 .init_IRQ = mpc86xx_init_irq,
122 .show_cpuinfo = sbc8641_show_cpuinfo,
123 .get_irq = mpic_get_irq,
124 .restart = fsl_rstcr_restart,
125 .time_init = mpc86xx_time_init,
126 .calibrate_decr = generic_calibrate_decr,
127 .progress = udbg_progress,
128 #ifdef CONFIG_PCI
129 .pcibios_fixup_bus = fsl_pcibios_fixup_bus,
130 #endif