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/*
* Generic PowerPC 44x platform support
*
* Copyright 2008 IBM Corporation
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; version 2 of the License.
*
* This implements simple platform support for PowerPC 44x chips. This is
* mostly used for eval boards or other simple and "generic" 44x boards. If
* your board has custom functions or hardware, then you will likely want to
* implement your own board.c file to accommodate it.
*/
#include <asm/machdep.h>
#include <asm/pci-bridge.h>
#include <asm/ppc4xx.h>
#include <asm/prom.h>
#include <asm/time.h>
#include <asm/udbg.h>
#include <asm/uic.h>
#include <linux/init.h>
#include <linux/of_platform.h>
static __initdata struct of_device_id ppc44x_of_bus[] = {
{ .compatible = "ibm,plb4", },
{ .compatible = "ibm,opb", },
{ .compatible = "ibm,ebc", },
{ .compatible = "simple-bus", },
{},
};
static int __init ppc44x_device_probe(void)
{
of_platform_bus_probe(NULL, ppc44x_of_bus, NULL);
return 0;
}
machine_device_initcall(ppc44x_simple, ppc44x_device_probe);
/* This is the list of boards that can be supported by this simple
* platform code. This does _not_ mean the boards are compatible,
* as they most certainly are not from a device tree perspective.
* However, their differences are handled by the device tree and the
* drivers and therefore they don't need custom board support files.
*
* Again, if your board needs to do things differently then create a
* board.c file for it rather than adding it to this list.
*/
static char *board[] __initdata = {
"amcc,arches",
"amcc,bamboo",
"amcc,canyonlands",
"amcc,glacier",
"ibm,ebony",
"amcc,katmai",
"amcc,rainier",
"amcc,sequoia",
"amcc,taishan",
"amcc,yosemite"
};
static int __init ppc44x_probe(void)
{
unsigned long root = of_get_flat_dt_root();
int i = 0;
for (i = 0; i < ARRAY_SIZE(board); i++) {
if (of_flat_dt_is_compatible(root, board[i])) {
ppc_pci_flags = PPC_PCI_REASSIGN_ALL_RSRC;
return 1;
}
}
return 0;
}
define_machine(ppc44x_simple) {
.name = "PowerPC 44x Platform",
.probe = ppc44x_probe,
.progress = udbg_progress,
.init_IRQ = uic_init_tree,
.get_irq = uic_get_irq,
.restart = ppc4xx_reset_system,
.calibrate_decr = generic_calibrate_decr,
};
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