1 /*
2 * arch/powerpc/platforms/83xx/mpc834x_mds.c
3 *
4 * MPC834x MDS board specific routines
5 *
6 * Maintainer: Kumar Gala <galak@kernel.crashing.org>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 */
13
14 #include <linux/stddef.h>
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/errno.h>
18 #include <linux/reboot.h>
19 #include <linux/pci.h>
20 #include <linux/kdev_t.h>
21 #include <linux/major.h>
22 #include <linux/console.h>
23 #include <linux/delay.h>
24 #include <linux/seq_file.h>
25 #include <linux/root_dev.h>
26 #include <linux/of_platform.h>
27
28 #include <linux/atomic.h>
29 #include <asm/time.h>
30 #include <asm/io.h>
31 #include <asm/machdep.h>
32 #include <asm/ipic.h>
33 #include <asm/irq.h>
34 #include <asm/prom.h>
35 #include <asm/udbg.h>
36 #include <sysdev/fsl_soc.h>
37 #include <sysdev/fsl_pci.h>
38
39 #include "mpc83xx.h"
40
41 #define BCSR5_INT_USB 0x02
mpc834xemds_usb_cfg(void)42 static int mpc834xemds_usb_cfg(void)
43 {
44 struct device_node *np;
45 void __iomem *bcsr_regs = NULL;
46 u8 bcsr5;
47
48 mpc834x_usb_cfg();
49 /* Map BCSR area */
50 np = of_find_node_by_name(NULL, "bcsr");
51 if (np) {
52 struct resource res;
53
54 of_address_to_resource(np, 0, &res);
55 bcsr_regs = ioremap(res.start, resource_size(&res));
56 of_node_put(np);
57 }
58 if (!bcsr_regs)
59 return -1;
60
61 /*
62 * if Processor Board is plugged into PIB board,
63 * force to use the PHY on Processor Board
64 */
65 bcsr5 = in_8(bcsr_regs + 5);
66 if (!(bcsr5 & BCSR5_INT_USB))
67 out_8(bcsr_regs + 5, (bcsr5 | BCSR5_INT_USB));
68 iounmap(bcsr_regs);
69 return 0;
70 }
71
72 /* ************************************************************************
73 *
74 * Setup the architecture
75 *
76 */
mpc834x_mds_setup_arch(void)77 static void __init mpc834x_mds_setup_arch(void)
78 {
79 mpc83xx_setup_arch();
80
81 mpc834xemds_usb_cfg();
82 }
83
84 machine_device_initcall(mpc834x_mds, mpc83xx_declare_of_platform_devices);
85
86 /*
87 * Called very early, MMU is off, device-tree isn't unflattened
88 */
mpc834x_mds_probe(void)89 static int __init mpc834x_mds_probe(void)
90 {
91 return of_machine_is_compatible("MPC834xMDS");
92 }
93
define_machine(mpc834x_mds)94 define_machine(mpc834x_mds) {
95 .name = "MPC834x MDS",
96 .probe = mpc834x_mds_probe,
97 .setup_arch = mpc834x_mds_setup_arch,
98 .init_IRQ = mpc83xx_ipic_init_IRQ,
99 .get_irq = ipic_get_irq,
100 .restart = mpc83xx_restart,
101 .time_init = mpc83xx_time_init,
102 .calibrate_decr = generic_calibrate_decr,
103 .progress = udbg_progress,
104 };
105
