powerpc/e500: add paravirt QEMU platform (9653018b) · Commits · 戴 / test

arch/powerpc/platforms/85xx/Kconfig

+16 −0

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		@@ -254,6 +254,22 @@ config P5020_DS
		help
		This option enables support for the P5020 DS board

		config PPC_QEMU_E500
		bool "QEMU generic e500 platform"
		depends on EXPERIMENTAL
		select DEFAULT_UIMAGE
		help
		This option enables support for running as a QEMU guest using
		QEMU's generic e500 machine. This is not required if you're
		using a QEMU machine that targets a specific board, such as
		mpc8544ds.

		Unlike most e500 boards that target a specific CPU, this
		platform works with any e500-family CPU that QEMU supports.
		Thus, you'll need to make sure CONFIG_PPC_E500MC is set or
		unset based on the emulated CPU (or actual host CPU in the case
		of KVM).

		endif # FSL_SOC_BOOKE

		config TQM85xx

arch/powerpc/platforms/85xx/Makefile

+1 −0

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		@@ -27,3 +27,4 @@ obj-$(CONFIG_SOCRATES) += socrates.o socrates_fpga_pic.o
		obj-$(CONFIG_KSI8560) += ksi8560.o
		obj-$(CONFIG_XES_MPC85xx) += xes_mpc85xx.o
		obj-$(CONFIG_GE_IMP3A) += ge_imp3a.o
		obj-$(CONFIG_PPC_QEMU_E500) += qemu_e500.o

arch/powerpc/platforms/85xx/qemu_e500.c

0 → 100644

+72 −0

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		/*
		* Paravirt target for a generic QEMU e500 machine
		*
		* This is intended to be a flexible device-tree-driven platform, not fixed
		* to a particular piece of hardware or a particular spec of virtual hardware,
		* beyond the assumption of an e500-family CPU. Some things are still hardcoded
		* here, such as MPIC, but this is a limitation of the current code rather than
		* an interface contract with QEMU.
		*
		* Copyright 2012 Freescale Semiconductor Inc.
		*
		* This program is free software; you can redistribute it and/or modify it
		* under the terms of the GNU General Public License as published by the
		* Free Software Foundation; either version 2 of the License, or (at your
		* option) any later version.
		*/

		#include <linux/kernel.h>
		#include <linux/of_fdt.h>
		#include <asm/machdep.h>
		#include <asm/time.h>
		#include <asm/udbg.h>
		#include <asm/mpic.h>
		#include <sysdev/fsl_soc.h>
		#include <sysdev/fsl_pci.h>
		#include "smp.h"
		#include "mpc85xx.h"

		void __init qemu_e500_pic_init(void)
		{
		struct mpic *mpic;

		mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN \| MPIC_SINGLE_DEST_CPU,
		0, 256, " OpenPIC ");

		BUG_ON(mpic == NULL);
		mpic_init(mpic);
		}

		static void __init qemu_e500_setup_arch(void)
		{
		ppc_md.progress("qemu_e500_setup_arch()", 0);

		fsl_pci_init();
		mpc85xx_smp_init();
		}

		/*
		* Called very early, device-tree isn't unflattened
		*/
		static int __init qemu_e500_probe(void)
		{
		unsigned long root = of_get_flat_dt_root();

		return !!of_flat_dt_is_compatible(root, "fsl,qemu-e500");
		}

		machine_device_initcall(qemu_e500, mpc85xx_common_publish_devices);

		define_machine(qemu_e500) {
		.name = "QEMU e500",
		.probe = qemu_e500_probe,
		.setup_arch = qemu_e500_setup_arch,
		.init_IRQ = qemu_e500_pic_init,
		#ifdef CONFIG_PCI
		.pcibios_fixup_bus = fsl_pcibios_fixup_bus,
		#endif
		.get_irq = mpic_get_irq,
		.restart = fsl_rstcr_restart,
		.calibrate_decr = generic_calibrate_decr,
		.progress = udbg_progress,
		};

arch/powerpc/platforms/Kconfig.cputype

+4 −0

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		@@ -159,6 +159,10 @@ config PPC_E500MC
		bool "e500mc Support"
		select PPC_FPU
		depends on E500
		help
		This must be enabled for running on e500mc (and derivatives
		such as e5500/e6500), and must be disabled for running on
		e500v1 or e500v2.

		config PPC_FPU
		bool

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