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1a170efec5
Combine machine descriptions and code of all P2020 boards into just one generic unified P2020 machine description. This allows kernel to boot on any P2020-based board with P2020 DTS file without need to patch kernel and define a new machine description in 85xx powerpc platform directory. Signed-off-by: Pali Rohár <pali@kernel.org> Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20230408140122.25293-12-pali@kernel.org
81 lines
1.7 KiB
C
81 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Freescale P2020 board Setup
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*
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* Copyright 2007,2009,2012-2013 Freescale Semiconductor Inc.
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* Copyright 2022-2023 Pali Rohár <pali@kernel.org>
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*/
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#include <linux/stddef.h>
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#include <linux/kernel.h>
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#include <linux/of.h>
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#include <asm/machdep.h>
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#include <asm/udbg.h>
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#include <asm/mpic.h>
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#include <asm/swiotlb.h>
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#include <asm/ppc-pci.h>
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#include <sysdev/fsl_pci.h>
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#include "smp.h"
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#include "mpc85xx.h"
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static void __init p2020_pic_init(void)
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{
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struct mpic *mpic;
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int flags = MPIC_BIG_ENDIAN | MPIC_SINGLE_DEST_CPU;
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mpic = mpic_alloc(NULL, 0, flags, 0, 256, " OpenPIC ");
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if (WARN_ON(!mpic))
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return;
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mpic_init(mpic);
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mpc85xx_8259_init();
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}
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/*
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* Setup the architecture
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*/
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static void __init p2020_setup_arch(void)
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{
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swiotlb_detect_4g();
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fsl_pci_assign_primary();
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uli_init();
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mpc85xx_smp_init();
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mpc85xx_qe_par_io_init();
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}
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/*
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* Called very early, device-tree isn't unflattened
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*/
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static int __init p2020_probe(void)
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{
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struct device_node *p2020_cpu;
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/*
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* There is no common compatible string for all P2020 boards.
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* The only common thing is "PowerPC,P2020@0" cpu node.
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* So check for P2020 board via this cpu node.
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*/
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p2020_cpu = of_find_node_by_path("/cpus/PowerPC,P2020@0");
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of_node_put(p2020_cpu);
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return !!p2020_cpu;
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}
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machine_arch_initcall(p2020, mpc85xx_common_publish_devices);
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define_machine(p2020) {
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.name = "Freescale P2020",
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.probe = p2020_probe,
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.setup_arch = p2020_setup_arch,
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.init_IRQ = p2020_pic_init,
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#ifdef CONFIG_PCI
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.pcibios_fixup_bus = fsl_pcibios_fixup_bus,
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.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
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#endif
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.get_irq = mpic_get_irq,
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.progress = udbg_progress,
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};
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