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87 lines
2.2 KiB
87 lines
2.2 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Generic PowerPC 44x platform support |
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* |
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* Copyright 2008 IBM Corporation |
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* |
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* This implements simple platform support for PowerPC 44x chips. This is |
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* mostly used for eval boards or other simple and "generic" 44x boards. If |
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* your board has custom functions or hardware, then you will likely want to |
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* implement your own board.c file to accommodate it. |
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*/ |
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#include <asm/machdep.h> |
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#include <asm/pci-bridge.h> |
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#include <asm/ppc4xx.h> |
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#include <asm/prom.h> |
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#include <asm/time.h> |
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#include <asm/udbg.h> |
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#include <asm/uic.h> |
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#include <linux/init.h> |
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#include <linux/of_platform.h> |
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static const struct of_device_id ppc44x_of_bus[] __initconst = { |
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{ .compatible = "ibm,plb4", }, |
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{ .compatible = "ibm,opb", }, |
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{ .compatible = "ibm,ebc", }, |
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{ .compatible = "simple-bus", }, |
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{}, |
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}; |
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static int __init ppc44x_device_probe(void) |
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{ |
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of_platform_bus_probe(NULL, ppc44x_of_bus, NULL); |
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return 0; |
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} |
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machine_device_initcall(ppc44x_simple, ppc44x_device_probe); |
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/* This is the list of boards that can be supported by this simple |
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* platform code. This does _not_ mean the boards are compatible, |
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* as they most certainly are not from a device tree perspective. |
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* However, their differences are handled by the device tree and the |
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* drivers and therefore they don't need custom board support files. |
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* |
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* Again, if your board needs to do things differently then create a |
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* board.c file for it rather than adding it to this list. |
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*/ |
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static char *board[] __initdata = { |
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"amcc,arches", |
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"amcc,bamboo", |
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"apm,bluestone", |
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"amcc,glacier", |
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"ibm,ebony", |
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"amcc,eiger", |
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"amcc,katmai", |
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"amcc,rainier", |
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"amcc,redwood", |
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"amcc,sequoia", |
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"amcc,taishan", |
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"amcc,yosemite", |
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"mosaixtech,icon" |
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}; |
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static int __init ppc44x_probe(void) |
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{ |
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int i = 0; |
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for (i = 0; i < ARRAY_SIZE(board); i++) { |
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if (of_machine_is_compatible(board[i])) { |
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pci_set_flags(PCI_REASSIGN_ALL_RSRC); |
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return 1; |
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} |
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} |
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return 0; |
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} |
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define_machine(ppc44x_simple) { |
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.name = "PowerPC 44x Platform", |
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.probe = ppc44x_probe, |
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.progress = udbg_progress, |
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.init_IRQ = uic_init_tree, |
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.get_irq = uic_get_irq, |
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.restart = ppc4xx_reset_system, |
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.calibrate_decr = generic_calibrate_decr, |
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};
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