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