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authorVineet Gupta <vgupta@synopsys.com>2013-01-18 10:42:26 +0100
committerVineet Gupta <vgupta@synopsys.com>2013-02-15 18:46:13 +0100
commit03a6d28cdddfbd11b338c23e7fe51d0816b9bdef (patch)
tree740383bea378fd680c35ff9b8c074ac36e2781ee /arch/arc/kernel/smp.c
parentARC: Fold boards sub-menu into platform/SoC menu (diff)
downloadlinux-03a6d28cdddfbd11b338c23e7fe51d0816b9bdef.tar.xz
linux-03a6d28cdddfbd11b338c23e7fe51d0816b9bdef.zip
ARC: [Review] Multi-platform image #2: Board callback Infrastructure
The orig platform code orgnaization was singleton design pattern - only one platform (and board thereof) would build at a time. Thus any platform/board specific code (e.g. irq init, early init ...) expected by ARC common code was exported as well defined set of APIs, with only ONE instance building ever. Now with multiple-platform build requirement, that design of code no longer holds - multiple board specific calls need to build at the same time - so ARC common code can't use the API approach, it needs a callback based design where each board registers it's specific set of functions, and at runtime, depending on board detection, the callbacks are used from the registry. This commit adds all the infrastructure, where board specific callbacks are specified as a "maThine description". All the hooks are placed in right spots, no board callbacks registered yet (with MACHINE_STARt/END constructs) so the hooks will not run. Next commit will actually convert the platform to this infrastructure. Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: Arnd Bergmann <arnd@arndb.de> Acked-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arc/kernel/smp.c')
-rw-r--r--arch/arc/kernel/smp.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arc/kernel/smp.c b/arch/arc/kernel/smp.c
index 1f762ad6969b..ea15f073452f 100644
--- a/arch/arc/kernel/smp.c
+++ b/arch/arc/kernel/smp.c
@@ -32,6 +32,7 @@
#include <linux/reboot.h>
#include <asm/processor.h>
#include <asm/setup.h>
+#include <asm/mach_desc.h>
arch_spinlock_t smp_atomic_ops_lock = __ARCH_SPIN_LOCK_UNLOCKED;
arch_spinlock_t smp_bitops_lock = __ARCH_SPIN_LOCK_UNLOCKED;
@@ -127,6 +128,8 @@ void __cpuinit start_kernel_secondary(void)
pr_info("## CPU%u LIVE ##: Executing Code...\n", cpu);
arc_platform_smp_init_cpu();
+ if (machine_desc->init_smp)
+ machine_desc->init_smp(smp_processor_id());
arc_local_timer_setup(cpu);