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authorMagnus Damm <damm@opensource.se>2010-12-14 10:56:55 +0300
committerPaul Mundt <lethal@linux-sh.org>2010-12-14 12:15:44 +0300
commit1c51ed4fb9f11fa1e0873aa2d5b28f42a85ac299 (patch)
tree258c5de6db68146a86fc27ae1dc2b8fed2dc40e3 /arch/arm/mach-shmobile/include
parent09dd7ded60019d6a4fd2ae20a08c4ad2bc3ed3e9 (diff)
downloadlinux-1c51ed4fb9f11fa1e0873aa2d5b28f42a85ac299.tar.xz
ARM: mach-shmobile: SMP base support
Add SMP base support for R-Mobile / SH-Mobile processors. This patch contains all base code to support CONFIG_SMP regardless of ARCH_SHMOBILE processor type. Both local timer and CPU hotplug are supported, but no processor specific code is included. At this point only the default behavior is in place, so a single core will always be used even though CONFIG_SMP is enabled on multicore systems. The SMP Kconfig entry for arch/arm/Kconfig is excluded from this patch to simplify merging. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/arm/mach-shmobile/include')
-rw-r--r--arch/arm/mach-shmobile/include/mach/common.h1
-rw-r--r--arch/arm/mach-shmobile/include/mach/entry-macro-intc.S6
-rw-r--r--arch/arm/mach-shmobile/include/mach/smp.h16
3 files changed, 23 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/include/mach/common.h b/arch/arm/mach-shmobile/include/mach/common.h
index 15932fd2435e..32822f7556ea 100644
--- a/arch/arm/mach-shmobile/include/mach/common.h
+++ b/arch/arm/mach-shmobile/include/mach/common.h
@@ -3,6 +3,7 @@
extern struct sys_timer shmobile_timer;
extern void shmobile_setup_console(void);
+extern void shmobile_secondary_vector(void);
struct clk;
extern int clk_init(void);
diff --git a/arch/arm/mach-shmobile/include/mach/entry-macro-intc.S b/arch/arm/mach-shmobile/include/mach/entry-macro-intc.S
index a285d13c7416..d06d4ba3251e 100644
--- a/arch/arm/mach-shmobile/include/mach/entry-macro-intc.S
+++ b/arch/arm/mach-shmobile/include/mach/entry-macro-intc.S
@@ -17,6 +17,12 @@
#include <mach/hardware.h>
#include <mach/irqs.h>
+ .macro test_for_ipi, irqnr, irqstat, base, tmp
+ .endm
+
+ .macro test_for_ltirq, irqnr, irqstat, base, tmp
+ .endm
+
.macro disable_fiq
.endm
diff --git a/arch/arm/mach-shmobile/include/mach/smp.h b/arch/arm/mach-shmobile/include/mach/smp.h
new file mode 100644
index 000000000000..f4a35ff82c67
--- /dev/null
+++ b/arch/arm/mach-shmobile/include/mach/smp.h
@@ -0,0 +1,16 @@
+#ifndef __MACH_SMP_H
+#define __MACH_SMP_H
+
+#include <asm/hardware/gic.h>
+#include <asm/smp_mpidr.h>
+
+/*
+ * We use IRQ1 as the IPI
+ */
+static inline void smp_cross_call(const struct cpumask *mask)
+{
+#if defined(CONFIG_ARM_GIC)
+ gic_raise_softirq(mask, 1);
+#endif
+}
+#endif