88 lines
2.3 KiB
C
88 lines
2.3 KiB
C
/*
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* Support for 'mpc5200-simple-platform' compatible boards.
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*
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* Written by Marian Balakowicz <m8@semihalf.com>
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* Copyright (C) 2007 Semihalf
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* Description:
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* This code implements support for a simple MPC52xx based boards which
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* do not need a custom platform specific setup. Such boards are
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* supported assuming the following:
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*
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* - GPIO pins are configured by the firmware,
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* - CDM configuration (clocking) is setup correctly by firmware,
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* - if the 'fsl,has-wdt' property is present in one of the
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* gpt nodes, then it is safe to use such gpt to reset the board,
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* - PCI is supported if enabled in the kernel configuration
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* and if there is a PCI bus node defined in the device tree.
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*
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* Boards that are compatible with this generic platform support
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* are listed in a 'board' table.
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*/
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#undef DEBUG
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#include <asm/time.h>
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#include <asm/prom.h>
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#include <asm/machdep.h>
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#include <asm/mpc52xx.h>
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/*
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* Setup the architecture
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*/
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static void __init mpc5200_simple_setup_arch(void)
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{
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if (ppc_md.progress)
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ppc_md.progress("mpc5200_simple_setup_arch()", 0);
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/* Map important registers from the internal memory map */
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mpc52xx_map_common_devices();
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/* Some mpc5200 & mpc5200b related configuration */
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mpc5200_setup_xlb_arbiter();
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mpc52xx_setup_pci();
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}
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/* list of the supported boards */
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static char *board[] __initdata = {
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"intercontrol,digsy-mtc",
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"promess,motionpro",
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"phytec,pcm030",
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"schindler,cm5200",
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"tqc,tqm5200",
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NULL
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};
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/*
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* Called very early, MMU is off, device-tree isn't unflattened
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*/
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static int __init mpc5200_simple_probe(void)
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{
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unsigned long node = of_get_flat_dt_root();
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int i = 0;
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while (board[i]) {
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if (of_flat_dt_is_compatible(node, board[i]))
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break;
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i++;
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}
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return (board[i] != NULL);
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}
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define_machine(mpc5200_simple_platform) {
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.name = "mpc5200-simple-platform",
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.probe = mpc5200_simple_probe,
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.setup_arch = mpc5200_simple_setup_arch,
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.init = mpc52xx_declare_of_platform_devices,
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.init_IRQ = mpc52xx_init_irq,
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.get_irq = mpc52xx_get_irq,
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.restart = mpc52xx_restart,
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.calibrate_decr = generic_calibrate_decr,
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};
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