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ARM: shmobile: Use shared SCU SMP boot code on emev2

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Use shared SCU code on emev2 for SMP boot.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Magnus Damm 2013-07-31 16:07:40 +09:00 committed by Simon Horman
parent 0ca2894b5a
commit 0da60225de
2 changed files with 11 additions and 10 deletions
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2
arch/arm/mach-shmobile/Makefile
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@ -19,7 +19,7 @@ obj-$(CONFIG_ARCH_EMEV2) += setup-emev2.o clock-emev2.o
smp-y := platsmp.o headsmp.o
smp-$(CONFIG_ARCH_SH73A0) += smp-sh73a0.o headsmp-scu.o platsmp-scu.o
smp-$(CONFIG_ARCH_R8A7779) += smp-r8a7779.o headsmp-scu.o platsmp-scu.o
smp-$(CONFIG_ARCH_EMEV2) += smp-emev2.o headsmp-scu.o
smp-$(CONFIG_ARCH_EMEV2) += smp-emev2.o headsmp-scu.o platsmp-scu.o
# IRQ objects
obj-$(CONFIG_ARCH_SH7372) += entry-intc.o

19
arch/arm/mach-shmobile/smp-emev2.c
View File

@ -34,6 +34,12 @@
static int __cpuinit emev2_boot_secondary(unsigned int cpu, struct task_struct *idle)
{
int ret;
ret = shmobile_smp_scu_boot_secondary(cpu, idle);
if (ret)
return ret;
arch_send_wakeup_ipi_mask(cpumask_of(cpu_logical_map(cpu)));
return 0;
}
@ -42,21 +48,16 @@ static void __init emev2_smp_prepare_cpus(unsigned int max_cpus)
{
void __iomem *smu;
/* setup EMEV2 specific SCU base, enable */
shmobile_scu_base = ioremap(EMEV2_SCU_BASE, PAGE_SIZE);
scu_enable(shmobile_scu_base);
/* Tell ROM loader about our vector (in headsmp-scu.S, headsmp.S) */
/* Tell ROM loader about our vector (in headsmp.S) */
smu = ioremap(EMEV2_SMU_BASE, PAGE_SIZE);
if (smu) {
iowrite32(__pa(shmobile_boot_vector), smu + SMU_GENERAL_REG0);
iounmap(smu);
}
shmobile_boot_fn = virt_to_phys(shmobile_boot_scu);
shmobile_boot_arg = (unsigned long)shmobile_scu_base;
/* enable cache coherency on booting CPU */
scu_power_mode(shmobile_scu_base, SCU_PM_NORMAL);
/* setup EMEV2 specific SCU bits */
shmobile_scu_base = ioremap(EMEV2_SCU_BASE, PAGE_SIZE);
shmobile_smp_scu_prepare_cpus(max_cpus);
}
struct smp_operations emev2_smp_ops __initdata = {