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
28static 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
40static 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
49machine_arch_initcall(qemu_e500, mpc85xx_common_publish_devices);
50
51define_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