summaryrefslogtreecommitdiff
path: root/arch/arm/mach-virt
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-virt')
-rw-r--r--arch/arm/mach-virt/Kconfig10
-rw-r--r--arch/arm/mach-virt/Makefile6
-rw-r--r--arch/arm/mach-virt/platsmp.c58
-rw-r--r--arch/arm/mach-virt/virt.c54
4 files changed, 128 insertions, 0 deletions
diff --git a/arch/arm/mach-virt/Kconfig b/arch/arm/mach-virt/Kconfig
new file mode 100644
index 000000000000..8958f0d896bc
--- /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 000000000000..042afc1f8c44
--- /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 000000000000..8badaabe70a1
--- /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 000000000000..31666f6b4373
--- /dev/null
+++ b/arch/arm/mach-virt/virt.c
@@ -0,0 +1,54 @@
+/*
+ * 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
+};
+
+extern struct smp_operations virt_smp_ops;
+
+DT_MACHINE_START(VIRT, "Dummy Virtual Machine")
+ .init_irq = irqchip_init,
+ .init_time = virt_timer_init,
+ .init_machine = virt_init,
+ .smp = smp_ops(virt_smp_ops),
+ .dt_compat = virt_dt_match,
+MACHINE_END