diff options
| -rw-r--r-- | arch/arm/Kconfig | 2 | ||||
| -rw-r--r-- | arch/arm/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/mach-virt/Kconfig | 10 | ||||
| -rw-r--r-- | arch/arm/mach-virt/Makefile | 6 | ||||
| -rw-r--r-- | arch/arm/mach-virt/platsmp.c | 58 | ||||
| -rw-r--r-- | arch/arm/mach-virt/virt.c | 58 |
6 files changed, 135 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 7a10661..441eda1 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1128,6 +1128,8 @@ source "arch/arm/mach-versatile/Kconfig" source "arch/arm/mach-vexpress/Kconfig" source "arch/arm/plat-versatile/Kconfig" +source "arch/arm/mach-virt/Kconfig" + source "arch/arm/mach-vt8500/Kconfig" source "arch/arm/mach-w90x900/Kconfig" diff --git a/arch/arm/Makefile b/arch/arm/Makefile index 4bcd2d6..3b82b36 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -194,6 +194,7 @@ machine-$(CONFIG_ARCH_SOCFPGA) += socfpga machine-$(CONFIG_ARCH_SPEAR13XX) += spear13xx machine-$(CONFIG_ARCH_SPEAR3XX) += spear3xx machine-$(CONFIG_MACH_SPEAR600) += spear6xx +machine-$(CONFIG_ARCH_VIRT) += virt machine-$(CONFIG_ARCH_ZYNQ) += zynq machine-$(CONFIG_ARCH_SUNXI) += sunxi diff --git a/arch/arm/mach-virt/Kconfig b/arch/arm/mach-virt/Kconfig new file mode 100644 index 0000000..8958f0d --- /dev/null +++ b/arch/arm/mach-virt/Kconfig @@ -0,0 +1,10 @@ +config ARCH_VIRT + bool "Dummy Virtual Machine" if ARCH_MULTI_V7 + select ARCH_WANT_OPTIONAL_GPIOLIB + select ARM_GIC + select ARM_ARCH_TIMER + select ARM_PSCI + select HAVE_SMP + select CPU_V7 + select SPARSE_IRQ + select USE_OF diff --git a/arch/arm/mach-virt/Makefile b/arch/arm/mach-virt/Makefile new file mode 100644 index 0000000..042afc1 --- /dev/null +++ b/arch/arm/mach-virt/Makefile @@ -0,0 +1,6 @@ +# +# Makefile for the linux kernel. +# + +obj-y := virt.o +obj-$(CONFIG_SMP) += platsmp.o diff --git a/arch/arm/mach-virt/platsmp.c b/arch/arm/mach-virt/platsmp.c new file mode 100644 index 0000000..8badaab --- /dev/null +++ b/arch/arm/mach-virt/platsmp.c @@ -0,0 +1,58 @@ +/* + * Dummy Virtual Machine - does what it says on the tin. + * + * Copyright (C) 2012 ARM Ltd + * Author: Will Deacon <will.deacon@arm.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/init.h> +#include <linux/smp.h> +#include <linux/of.h> + +#include <linux/irqchip/arm-gic.h> + +#include <asm/psci.h> +#include <asm/smp_plat.h> + +extern void secondary_startup(void); + +static void __init virt_smp_init_cpus(void) +{ +} + +static void __init virt_smp_prepare_cpus(unsigned int max_cpus) +{ +} + +static int __cpuinit virt_boot_secondary(unsigned int cpu, + struct task_struct *idle) +{ + if (psci_ops.cpu_on) + return psci_ops.cpu_on(cpu_logical_map(cpu), + __pa(secondary_startup)); + return -ENODEV; +} + +static void __cpuinit virt_secondary_init(unsigned int cpu) +{ + gic_secondary_init(0); +} + +struct smp_operations __initdata virt_smp_ops = { + .smp_init_cpus = virt_smp_init_cpus, + .smp_prepare_cpus = virt_smp_prepare_cpus, + .smp_secondary_init = virt_secondary_init, + .smp_boot_secondary = virt_boot_secondary, +}; diff --git a/arch/arm/mach-virt/virt.c b/arch/arm/mach-virt/virt.c new file mode 100644 index 0000000..f6ed9cf --- /dev/null +++ b/arch/arm/mach-virt/virt.c @@ -0,0 +1,58 @@ +/* + * Dummy Virtual Machine - does what it says on the tin. + * + * Copyright (C) 2012 ARM Ltd + * Authors: Will Deacon <will.deacon@arm.com>, + * Marc Zyngier <marc.zyngier@arm.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/irqchip.h> +#include <linux/of_irq.h> +#include <linux/of_platform.h> +#include <linux/smp.h> + +#include <asm/arch_timer.h> +#include <asm/mach/arch.h> +#include <asm/mach/time.h> + +static void __init virt_init(void) +{ + of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); +} + +static void __init virt_timer_init(void) +{ + WARN_ON(arch_timer_of_register() != 0); + WARN_ON(arch_timer_sched_clock_init() != 0); +} + +static const char *virt_dt_match[] = { + "linux,dummy-virt", + NULL +}; + +static struct sys_timer virt_timer = { + .init = virt_timer_init, +}; + +extern struct smp_operations virt_smp_ops; + +DT_MACHINE_START(VIRT, "Dummy Virtual Machine") + .init_irq = irqchip_init, + .timer = &virt_timer, + .init_machine = virt_init, + .smp = smp_ops(virt_smp_ops), + .dt_compat = virt_dt_match, +MACHINE_END |
