Messages in this thread Patch in this message | | | From | <> | Subject | [PATCH] socfpga_a10: reset CPU1 in socfpga_cpu_kill() | Date | Wed, 10 May 2017 01:13:04 -0400 |
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From: Yanjiang Jin <yanjiang.jin@windriver.com>
Kexec's second kernel would hang if CPU1 isn't reset.
Signed-off-by: Yanjiang Jin <yanjiang.jin@windriver.com> --- arch/arm/mach-socfpga/platsmp.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-socfpga/platsmp.c b/arch/arm/mach-socfpga/platsmp.c index 0ee7677..db3940e 100644 --- a/arch/arm/mach-socfpga/platsmp.c +++ b/arch/arm/mach-socfpga/platsmp.c @@ -117,6 +117,16 @@ static int socfpga_cpu_kill(unsigned int cpu) { return 1; } + +static int socfpga_a10_cpu_kill(unsigned int cpu) +{ + /* This will put CPU #1 into reset. */ + if (socfpga_cpu1start_addr) + writel(RSTMGR_MPUMODRST_CPU1, rst_manager_base_addr + + SOCFPGA_A10_RSTMGR_MODMPURST); + + return 1; +} #endif static const struct smp_operations socfpga_smp_ops __initconst = { @@ -133,7 +143,7 @@ static int socfpga_cpu_kill(unsigned int cpu) .smp_boot_secondary = socfpga_a10_boot_secondary, #ifdef CONFIG_HOTPLUG_CPU .cpu_die = socfpga_cpu_die, - .cpu_kill = socfpga_cpu_kill, + .cpu_kill = socfpga_a10_cpu_kill, #endif }; -- 1.9.1
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