From mboxrd@z Thu Jan 1 00:00:00 1970 From: magnus.damm@gmail.com (Magnus Damm) Date: Wed, 31 Jul 2013 16:07:40 +0900 Subject: [PATCH 04/07] ARM: shmobile: Use shared SCU SMP boot code on emev2 In-Reply-To: <20130731070702.14444.64961.sendpatchset@w520> References: <20130731070702.14444.64961.sendpatchset@w520> Message-ID: <20130731070740.14444.10398.sendpatchset@w520> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Magnus Damm Use shared SCU code on emev2 for SMP boot. Signed-off-by: Magnus Damm --- arch/arm/mach-shmobile/Makefile | 2 +- arch/arm/mach-shmobile/smp-emev2.c | 19 ++++++++++--------- 2 files changed, 11 insertions(+), 10 deletions(-) --- 0004/arch/arm/mach-shmobile/Makefile +++ work/arch/arm/mach-shmobile/Makefile 2013-07-31 11:58:03.000000000 +0900 @@ -34,7 +34,7 @@ endif 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 --- 0001/arch/arm/mach-shmobile/smp-emev2.c +++ work/arch/arm/mach-shmobile/smp-emev2.c 2013-07-31 11:58:39.000000000 +0900 @@ -34,6 +34,12 @@ static int 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_cpu { 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 = {