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authorMagnus Damm <damm@opensource.se>2013-07-31 03:07:21 -0400
committerSimon Horman <horms+renesas@verge.net.au>2013-08-06 05:07:24 -0400
commit12eb8474386228c91e35be031d7c3eaa1318b5cf (patch)
tree6b13ea67b3a37ea1a68039226eb7fdb7f3adfd7d
parentc970d4ef3ac6d56f5fd02902ad2ad80377c0bca1 (diff)
ARM: shmobile: Use shared SCU SMP boot code on sh73a0
Use shared SCU code on sh73a0 for SMP boot. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
-rw-r--r--arch/arm/mach-shmobile/Makefile2
-rw-r--r--arch/arm/mach-shmobile/smp-sh73a0.c26
2 files changed, 14 insertions, 14 deletions
diff --git a/arch/arm/mach-shmobile/Makefile b/arch/arm/mach-shmobile/Makefile
index e401c737fb4d..a32dc1584a25 100644
--- a/arch/arm/mach-shmobile/Makefile
+++ b/arch/arm/mach-shmobile/Makefile
@@ -17,7 +17,7 @@ obj-$(CONFIG_ARCH_EMEV2) += setup-emev2.o clock-emev2.o
17 17
18# SMP objects 18# SMP objects
19smp-y := platsmp.o headsmp.o 19smp-y := platsmp.o headsmp.o
20smp-$(CONFIG_ARCH_SH73A0) += smp-sh73a0.o headsmp-scu.o 20smp-$(CONFIG_ARCH_SH73A0) += smp-sh73a0.o headsmp-scu.o platsmp-scu.o
21smp-$(CONFIG_ARCH_R8A7779) += smp-r8a7779.o headsmp-scu.o 21smp-$(CONFIG_ARCH_R8A7779) += smp-r8a7779.o headsmp-scu.o
22smp-$(CONFIG_ARCH_EMEV2) += smp-emev2.o headsmp-scu.o 22smp-$(CONFIG_ARCH_EMEV2) += smp-emev2.o headsmp-scu.o
23 23
diff --git a/arch/arm/mach-shmobile/smp-sh73a0.c b/arch/arm/mach-shmobile/smp-sh73a0.c
index 1b3dc7c1e87e..1096b0eb6c5e 100644
--- a/arch/arm/mach-shmobile/smp-sh73a0.c
+++ b/arch/arm/mach-shmobile/smp-sh73a0.c
@@ -50,30 +50,30 @@ void __init sh73a0_register_twd(void)
50 50
51static int __cpuinit sh73a0_boot_secondary(unsigned int cpu, struct task_struct *idle) 51static int __cpuinit sh73a0_boot_secondary(unsigned int cpu, struct task_struct *idle)
52{ 52{
53 cpu = cpu_logical_map(cpu); 53 unsigned int lcpu = cpu_logical_map(cpu);
54 int ret;
54 55
55 if (((__raw_readl(PSTR) >> (4 * cpu)) & 3) == 3) 56 ret = shmobile_smp_scu_boot_secondary(cpu, idle);
56 __raw_writel(1 << cpu, WUPCR); /* wake up */ 57 if (ret)
58 return ret;
59
60 if (((__raw_readl(PSTR) >> (4 * lcpu)) & 3) == 3)
61 __raw_writel(1 << lcpu, WUPCR); /* wake up */
57 else 62 else
58 __raw_writel(1 << cpu, SRESCR); /* reset */ 63 __raw_writel(1 << lcpu, SRESCR); /* reset */
59 64
60 return 0; 65 return 0;
61} 66}
62 67
63static void __init sh73a0_smp_prepare_cpus(unsigned int max_cpus) 68static void __init sh73a0_smp_prepare_cpus(unsigned int max_cpus)
64{ 69{
65 /* setup sh73a0 specific SCU base */ 70 /* Map the reset vector (in headsmp.S) */
66 shmobile_scu_base = IOMEM(SH73A0_SCU_BASE);
67 scu_enable(shmobile_scu_base);
68
69 /* Map the reset vector (in headsmp-scu.S, headsmp.S) */
70 __raw_writel(0, APARMBAREA); /* 4k */ 71 __raw_writel(0, APARMBAREA); /* 4k */
71 __raw_writel(__pa(shmobile_boot_vector), SBAR); 72 __raw_writel(__pa(shmobile_boot_vector), SBAR);
72 shmobile_boot_fn = virt_to_phys(shmobile_boot_scu);
73 shmobile_boot_arg = (unsigned long)shmobile_scu_base;
74 73
75 /* enable cache coherency on booting CPU */ 74 /* setup sh73a0 specific SCU bits */
76 scu_power_mode(shmobile_scu_base, SCU_PM_NORMAL); 75 shmobile_scu_base = IOMEM(SH73A0_SCU_BASE);
76 shmobile_smp_scu_prepare_cpus(max_cpus);
77} 77}
78 78
79#ifdef CONFIG_HOTPLUG_CPU 79#ifdef CONFIG_HOTPLUG_CPU