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70 lines
1.8 KiB
70 lines
1.8 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Paravirt target for a generic QEMU e500 machine |
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* |
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* This is intended to be a flexible device-tree-driven platform, not fixed |
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* to a particular piece of hardware or a particular spec of virtual hardware, |
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* beyond the assumption of an e500-family CPU. Some things are still hardcoded |
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* here, such as MPIC, but this is a limitation of the current code rather than |
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* an interface contract with QEMU. |
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* |
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* Copyright 2012 Freescale Semiconductor Inc. |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/of_fdt.h> |
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#include <linux/pgtable.h> |
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#include <asm/machdep.h> |
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#include <asm/time.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 <sysdev/fsl_soc.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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void __init qemu_e500_pic_init(void) |
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{ |
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struct mpic *mpic; |
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unsigned int flags = MPIC_BIG_ENDIAN | MPIC_SINGLE_DEST_CPU | |
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MPIC_ENABLE_COREINT; |
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mpic = mpic_alloc(NULL, 0, flags, 0, 256, " OpenPIC "); |
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BUG_ON(mpic == NULL); |
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mpic_init(mpic); |
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} |
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static void __init qemu_e500_setup_arch(void) |
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{ |
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ppc_md.progress("qemu_e500_setup_arch()", 0); |
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fsl_pci_assign_primary(); |
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swiotlb_detect_4g(); |
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mpc85xx_smp_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 qemu_e500_probe(void) |
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{ |
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return !!of_machine_is_compatible("fsl,qemu-e500"); |
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} |
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machine_arch_initcall(qemu_e500, mpc85xx_common_publish_devices); |
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define_machine(qemu_e500) { |
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.name = "QEMU e500", |
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.probe = qemu_e500_probe, |
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.setup_arch = qemu_e500_setup_arch, |
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.init_IRQ = qemu_e500_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_coreint_irq, |
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.calibrate_decr = generic_calibrate_decr, |
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.progress = udbg_progress, |
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};
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