2 * Support for 'mpc5200-simple-platform' compatible boards.
4 * Written by Marian Balakowicz <m8@semihalf.com>
5 * Copyright (C) 2007 Semihalf
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
13 * This code implements support for a simple MPC52xx based boards which
14 * do not need a custom platform specific setup. Such boards are
15 * supported assuming the following:
17 * - GPIO pins are configured by the firmware,
18 * - CDM configuration (clocking) is setup correctly by firmware,
19 * - if the 'fsl,has-wdt' property is present in one of the
20 * gpt nodes, then it is safe to use such gpt to reset the board,
21 * - PCI is supported if enabled in the kernel configuration
22 * and if there is a PCI bus node defined in the device tree.
24 * Boards that are compatible with this generic platform support
25 * are listed in a 'board' table.
31 #include <asm/machdep.h>
32 #include <asm/mpc52xx.h>
35 * Setup the architecture
37 static void __init mpc5200_simple_setup_arch(void)
40 ppc_md.progress("mpc5200_simple_setup_arch()", 0);
42 /* Map important registers from the internal memory map */
43 mpc52xx_map_common_devices();
45 /* Some mpc5200 & mpc5200b related configuration */
46 mpc5200_setup_xlb_arbiter();
51 /* list of the supported boards */
52 static char *board[] __initdata = {
60 * Called very early, MMU is off, device-tree isn't unflattened
62 static int __init mpc5200_simple_probe(void)
64 unsigned long node = of_get_flat_dt_root();
68 if (of_flat_dt_is_compatible(node, board[i]))
73 return (board[i] != NULL);
76 define_machine(mpc5200_simple_platform) {
77 .name = "mpc5200-simple-platform",
78 .probe = mpc5200_simple_probe,
79 .setup_arch = mpc5200_simple_setup_arch,
80 .init = mpc52xx_declare_of_platform_devices,
81 .init_IRQ = mpc52xx_init_irq,
82 .get_irq = mpc52xx_get_irq,
83 .restart = mpc52xx_restart,
84 .calibrate_decr = generic_calibrate_decr,