Merge tag 'mm-nonmm-stable-2024-05-19-11-56' of git://git.kernel.org/pub/scm/linux...
[sfrench/cifs-2.6.git] / arch / powerpc / platforms / 85xx / qemu_e500.c
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 };