projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 9653018b SW |
1 | /* |
| 2 | * Paravirt target for a generic QEMU e500 machine | |
| 3 | * | |
| 4 | * This is intended to be a flexible device-tree-driven platform, not fixed | |
| 5 | * to a particular piece of hardware or a particular spec of virtual hardware, | |
| 6 | * beyond the assumption of an e500-family CPU. Some things are still hardcoded | |
| 7 | * here, such as MPIC, but this is a limitation of the current code rather than | |
| 8 | * an interface contract with QEMU. | |
| 9 | * | |
| 10 | * Copyright 2012 Freescale Semiconductor Inc. | |
| 11 | * | |
| 12 | * This program is free software; you can redistribute it and/or modify it | |
| 13 | * under the terms of the GNU General Public License as published by the | |
| 14 | * Free Software Foundation; either version 2 of the License, or (at your | |
| 15 | * option) any later version. | |
| 16 | */ | |
| 17 | ||
| 18 | #include <linux/kernel.h> | |
| 19 | #include <linux/of_fdt.h> | |
| 20 | #include <asm/machdep.h> | |
| 84f44cc5 | 21 | #include <asm/pgtable.h> |
| 9653018b SW |
22 | #include <asm/time.h> |
| 23 | #include <asm/udbg.h> | |
| 24 | #include <asm/mpic.h> | |
| 4a605e2d | 25 | #include <asm/swiotlb.h> |
| 9653018b SW |
26 | #include <sysdev/fsl_soc.h> |
| 27 | #include <sysdev/fsl_pci.h> | |
| 28 | #include "smp.h" | |
| 29 | #include "mpc85xx.h" | |
| 30 | ||
| 31 | void __init qemu_e500_pic_init(void) | |
| 32 | { | |
| 33 | struct mpic *mpic; | |
| 64871ff6 SW |
34 | unsigned int flags = MPIC_BIG_ENDIAN | MPIC_SINGLE_DEST_CPU | |
| 35 | MPIC_ENABLE_COREINT; | |
| 9653018b | 36 | |
| 64871ff6 | 37 | mpic = mpic_alloc(NULL, 0, flags, 0, 256, " OpenPIC "); |
| 9653018b SW |
38 | |
| 39 | BUG_ON(mpic == NULL); | |
| 40 | mpic_init(mpic); | |
| 41 | } | |
| 42 | ||
| 43 | static void __init qemu_e500_setup_arch(void) | |
| 44 | { | |
| 45 | ppc_md.progress("qemu_e500_setup_arch()", 0); | |
| 46 | ||
| 905e75c4 | 47 | fsl_pci_assign_primary(); |
| 688ba1db | 48 | swiotlb_detect_4g(); |
| 9653018b SW |
49 | mpc85xx_smp_init(); |
| 50 | } | |
| 51 | ||
| 52 | /* | |
| 53 | * Called very early, device-tree isn't unflattened | |
| 54 | */ | |
| 55 | static int __init qemu_e500_probe(void) | |
| 56 | { | |
| 56571384 | 57 | return !!of_machine_is_compatible("fsl,qemu-e500"); |
| 9653018b SW |
58 | } |
| 59 | ||
| 905e75c4 | 60 | machine_arch_initcall(qemu_e500, mpc85xx_common_publish_devices); |
| 9653018b SW |
61 | |
| 62 | define_machine(qemu_e500) { | |
| 63 | .name = "QEMU e500", | |
| 64 | .probe = qemu_e500_probe, | |
| 65 | .setup_arch = qemu_e500_setup_arch, | |
| 66 | .init_IRQ = qemu_e500_pic_init, | |
| 67 | #ifdef CONFIG_PCI | |
| 68 | .pcibios_fixup_bus = fsl_pcibios_fixup_bus, | |
| 48b16180 | 69 | .pcibios_fixup_phb = fsl_pcibios_fixup_phb, |
| 9653018b | 70 | #endif |
| 64871ff6 | 71 | .get_irq = mpic_get_coreint_irq, |
| 9653018b SW |
72 | .calibrate_decr = generic_calibrate_decr, |
| 73 | .progress = udbg_progress, | |
| 74 | }; |