diff options
author | Vineet Gupta <vgupta@synopsys.com> | 2015-10-09 12:16:02 +0530 |
---|---|---|
committer | Vineet Gupta <vgupta@synopsys.com> | 2015-10-17 17:48:27 +0530 |
commit | f33e9c434b8ce833bd3dd39436bd0799c3e1d1c5 (patch) | |
tree | a8990b95ec37cf6347fe60e5798422d0e9eb6a38 /arch/arc/kernel/mcip.c | |
parent | d0890ea5b68f63d7b8641455dc5534886fee2fa1 (diff) |
ARC: smp: Move default boot kick/wait code out of MCIP into common code
For non halt-on-reset case, all cores start of simultaneously in @stext.
Master core0 proceeds with kernel boot, while other spin-wait on
@wake_flag being set by master once it is ready. So NO hardware assist
is needed for master to "kick" the others.
This patch moves this soft implementation out of mcip.c (as there is no
hardware assist) into common smp.c
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc/kernel/mcip.c')
-rw-r--r-- | arch/arc/kernel/mcip.c | 18 |
1 files changed, 0 insertions, 18 deletions
diff --git a/arch/arc/kernel/mcip.c b/arch/arc/kernel/mcip.c index e48a1331c588..e18d36eb0af6 100644 --- a/arch/arc/kernel/mcip.c +++ b/arch/arc/kernel/mcip.c @@ -97,26 +97,8 @@ static void mcip_ipi_clear(int irq) #endif } -volatile int wake_flag; - -static void mcip_wakeup_cpu(int cpu, unsigned long pc) -{ - BUG_ON(cpu == 0); - wake_flag = cpu; -} - -void arc_platform_smp_wait_to_boot(int cpu) -{ - while (wake_flag != cpu) - ; - - wake_flag = 0; - __asm__ __volatile__("j @first_lines_of_secondary \n"); -} - struct plat_smp_ops plat_smp_ops = { .info = smp_cpuinfo_buf, - .cpu_kick = mcip_wakeup_cpu, .ipi_send = mcip_ipi_send, .ipi_clear = mcip_ipi_clear, }; |