1 /*
2  * arch/powerpc/platforms/83xx/mpc837x_rdb.c
3  *
4  * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
5  *
6  * MPC837x RDB board specific routines
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/pci.h>
15 #include <linux/of_platform.h>
16 
17 #include <asm/time.h>
18 #include <asm/ipic.h>
19 #include <asm/udbg.h>
20 #include <sysdev/fsl_soc.h>
21 #include <sysdev/fsl_pci.h>
22 
23 #include "mpc83xx.h"
24 
25 static void mpc837x_rdb_sd_cfg(void)
26 {
27 	void __iomem *im;
28 
29 	im = ioremap(get_immrbase(), 0x1000);
30 	if (!im) {
31 		WARN_ON(1);
32 		return;
33 	}
34 
35 	/*
36 	 * On RDB boards (in contrast to MDS) USBB pins are used for SD only,
37 	 * so we can safely mux them away from the USB block.
38 	 */
39 	clrsetbits_be32(im + MPC83XX_SICRL_OFFS, MPC837X_SICRL_USBB_MASK,
40 						 MPC837X_SICRL_SD);
41 	clrsetbits_be32(im + MPC83XX_SICRH_OFFS, MPC837X_SICRH_SPI_MASK,
42 						 MPC837X_SICRH_SD);
43 	iounmap(im);
44 }
45 
46 /* ************************************************************************
47  *
48  * Setup the architecture
49  *
50  */
51 static void __init mpc837x_rdb_setup_arch(void)
52 {
53 	if (ppc_md.progress)
54 		ppc_md.progress("mpc837x_rdb_setup_arch()", 0);
55 
56 	mpc83xx_setup_pci();
57 	mpc837x_usb_cfg();
58 	mpc837x_rdb_sd_cfg();
59 }
60 
61 machine_device_initcall(mpc837x_rdb, mpc83xx_declare_of_platform_devices);
62 
63 static const char * const board[] __initconst = {
64 	"fsl,mpc8377rdb",
65 	"fsl,mpc8378rdb",
66 	"fsl,mpc8379rdb",
67 	"fsl,mpc8377wlan",
68 	NULL
69 };
70 
71 /*
72  * Called very early, MMU is off, device-tree isn't unflattened
73  */
74 static int __init mpc837x_rdb_probe(void)
75 {
76 	return of_flat_dt_match(of_get_flat_dt_root(), board);
77 }
78 
79 define_machine(mpc837x_rdb) {
80 	.name			= "MPC837x RDB/WLAN",
81 	.probe			= mpc837x_rdb_probe,
82 	.setup_arch		= mpc837x_rdb_setup_arch,
83 	.init_IRQ		= mpc83xx_ipic_init_IRQ,
84 	.get_irq		= ipic_get_irq,
85 	.restart		= mpc83xx_restart,
86 	.time_init		= mpc83xx_time_init,
87 	.calibrate_decr		= generic_calibrate_decr,
88 	.progress		= udbg_progress,
89 };
90