| 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
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| 2 | /* |
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| 3 | * Paravirt target for a generic QEMU e500 machine |
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| 4 | * |
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| 5 | * This is intended to be a flexible device-tree-driven platform, not fixed |
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| 6 | * to a particular piece of hardware or a particular spec of virtual hardware, |
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| 7 | * beyond the assumption of an e500-family CPU. Some things are still hardcoded |
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| 8 | * here, such as MPIC, but this is a limitation of the current code rather than |
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| 9 | * an interface contract with QEMU. |
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| 10 | * |
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| 11 | * Copyright 2012 Freescale Semiconductor Inc. |
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| 12 | */ |
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| 13 | |
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| 14 | #include <linux/kernel.h> |
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| 15 | #include <linux/of.h> |
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| 16 | #include <linux/of_fdt.h> |
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| 17 | #include <linux/pgtable.h> |
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| 18 | #include <asm/machdep.h> |
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| 19 | #include <asm/time.h> |
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| 20 | #include <asm/udbg.h> |
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| 21 | #include <asm/mpic.h> |
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| 22 | #include <asm/swiotlb.h> |
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| 23 | #include <sysdev/fsl_soc.h> |
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| 24 | #include <sysdev/fsl_pci.h> |
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| 25 | #include "smp.h" |
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| 26 | #include "mpc85xx.h" |
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| 27 | |
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| 28 | static void __init qemu_e500_pic_init(void) |
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| 29 | { |
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| 30 | struct mpic *mpic; |
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| 31 | unsigned int flags = MPIC_BIG_ENDIAN | MPIC_SINGLE_DEST_CPU | |
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| 32 | MPIC_ENABLE_COREINT; |
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| 33 | |
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| 34 | mpic = mpic_alloc(NULL, 0, flags, 0, 256, " OpenPIC " ); |
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| 35 | |
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| 36 | BUG_ON(mpic == NULL); |
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| 37 | mpic_init(mpic); |
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| 38 | } |
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| 39 | |
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| 40 | static void __init qemu_e500_setup_arch(void) |
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| 41 | { |
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| 42 | ppc_md.progress("qemu_e500_setup_arch()" , 0); |
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| 43 | |
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| 44 | fsl_pci_assign_primary(); |
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| 45 | swiotlb_detect_4g(); |
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| 46 | mpc85xx_smp_init(); |
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| 47 | } |
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| 48 | |
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| 49 | machine_arch_initcall(qemu_e500, mpc85xx_common_publish_devices); |
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| 50 | |
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| 51 | define_machine(qemu_e500) { |
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| 52 | .name = "QEMU e500" , |
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| 53 | .compatible = "fsl,qemu-e500" , |
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| 54 | .setup_arch = qemu_e500_setup_arch, |
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| 55 | .init_IRQ = qemu_e500_pic_init, |
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| 56 | #ifdef CONFIG_PCI |
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| 57 | .pcibios_fixup_bus = fsl_pcibios_fixup_bus, |
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| 58 | .pcibios_fixup_phb = fsl_pcibios_fixup_phb, |
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| 59 | #endif |
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| 60 | .get_irq = mpic_get_coreint_irq, |
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| 61 | .progress = udbg_progress, |
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| 62 | .power_save = e500_idle, |
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| 63 | }; |
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| 64 | |
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