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authorLinus Torvalds <torvalds@linux-foundation.org>2013-11-11 16:49:45 +0900
committerLinus Torvalds <torvalds@linux-foundation.org>2013-11-11 16:49:45 +0900
commitaac59e3efce3dca787b11e34726001603ce3d161 (patch)
tree855d3f967b102877a179e23382be3c2c7fc8d66c /arch/arm/mach-shmobile/platsmp-scu.c
parent21604cdcdcf9ea8c16b1656f78e2eff097244d66 (diff)
parent005ff5fb077ebf93882bd643932f932a9b402529 (diff)
Merge tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC platform changes from Olof Johansson: "New and updated SoC support. Among the things new for this release are: - More support for the AM33xx platforms from TI - Tegra 124 support, and some updates to older tegra families as well - imx cleanups and updates across the board - A rename of Broadcom's Mobile platforms which were introduced as ARCH_BCM, and turned out to be too broad a name. New name is ARCH_BCM_MOBILE. - A whole bunch of updates and fixes for integrator, making the platform code more modern and switches over to DT-only booting. - Support for two new Renesas shmobile chipsets. Next up for them is more work on consolidation instead of introduction of new non-multiplatform SoCs, we're all looking forward to that! - Misc cleanups for older Samsung platforms, some Allwinner updates, etc" * tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (159 commits) ARM: bcm281xx: Add ARCH_BCM_MOBILE to bcm config ARM: bcm_defconfig: Run "make savedefconfig" ARM: bcm281xx: Add ARCH Timers to config rename ARCH_BCM to ARCH_BCM_MOBILE (mach-bcm) ARM: vexpress: Enable platform-specific options in defconfig ARM: vexpress: Make defconfig work again ARM: sunxi: remove .init_time hooks ARM: imx: enable suspend for imx6sl ARM: imx: ensure dsm_request signal is not asserted when setting LPM ARM: imx6q: call WB and RBC configuration from imx6q_pm_enter() ARM: imx6q: move low-power code out of clock driver ARM: imx: drop extern with function prototypes in common.h ARM: imx: reset core along with enable/disable operation ARM: imx: do not return from imx_cpu_die() call ARM: imx_v6_v7_defconfig: Select CONFIG_PROVE_LOCKING ARM: imx_v6_v7_defconfig: Enable LEDS_GPIO related options ARM: mxs_defconfig: Turn off CONFIG_DEBUG_GPIO ARM: imx: replace imx6q_restart() with mxc_restart() ARM: mach-imx: mm-imx5: Retrieve iomuxc base address from dt ARM: mach-imx: mm-imx5: Retrieve tzic base address from dt ...
Diffstat (limited to 'arch/arm/mach-shmobile/platsmp-scu.c')
-rw-r--r--arch/arm/mach-shmobile/platsmp-scu.c30
1 files changed, 23 insertions, 7 deletions
diff --git a/arch/arm/mach-shmobile/platsmp-scu.c b/arch/arm/mach-shmobile/platsmp-scu.c
index c96f50160be6..673ad6e80869 100644
--- a/arch/arm/mach-shmobile/platsmp-scu.c
+++ b/arch/arm/mach-shmobile/platsmp-scu.c
@@ -7,6 +7,7 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
+#include <linux/cpu.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/io.h>
@@ -16,6 +17,26 @@
#include <asm/smp_scu.h>
#include <mach/common.h>
+static int shmobile_smp_scu_notifier_call(struct notifier_block *nfb,
+ unsigned long action, void *hcpu)
+{
+ unsigned int cpu = (long)hcpu;
+
+ switch (action) {
+ case CPU_UP_PREPARE:
+ /* For this particular CPU register SCU SMP boot vector */
+ shmobile_smp_hook(cpu, virt_to_phys(shmobile_boot_scu),
+ (unsigned long)shmobile_scu_base);
+ break;
+ };
+
+ return NOTIFY_OK;
+}
+
+static struct notifier_block shmobile_smp_scu_notifier = {
+ .notifier_call = shmobile_smp_scu_notifier_call,
+};
+
void __init shmobile_smp_scu_prepare_cpus(unsigned int max_cpus)
{
/* install boot code shared by all CPUs */
@@ -25,14 +46,9 @@ void __init shmobile_smp_scu_prepare_cpus(unsigned int max_cpus)
/* enable SCU and cache coherency on booting CPU */
scu_enable(shmobile_scu_base);
scu_power_mode(shmobile_scu_base, SCU_PM_NORMAL);
-}
-int shmobile_smp_scu_boot_secondary(unsigned int cpu, struct task_struct *idle)
-{
- /* For this particular CPU register SCU boot vector */
- shmobile_smp_hook(cpu, virt_to_phys(shmobile_boot_scu),
- (unsigned long)shmobile_scu_base);
- return 0;
+ /* Use CPU notifier for reset vector control */
+ register_cpu_notifier(&shmobile_smp_scu_notifier);
}
#ifdef CONFIG_HOTPLUG_CPU