mirror of https://gitee.com/openkylin/linux.git
92 lines
2.4 KiB
C
92 lines
2.4 KiB
C
/*
|
|
* 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,bluestone",
|
|
"amcc,glacier",
|
|
"ibm,ebony",
|
|
"amcc,eiger",
|
|
"amcc,katmai",
|
|
"amcc,rainier",
|
|
"amcc,redwood",
|
|
"amcc,sequoia",
|
|
"amcc,taishan",
|
|
"amcc,yosemite",
|
|
"mosaixtech,icon"
|
|
};
|
|
|
|
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])) {
|
|
pci_set_flags(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,
|
|
};
|