ARM: shmobile: Move r8a7790 reset code to pm-r8a7790.c

Move r8a7790 specific reset vector setup code from the
SMP glue code to PM code. This makes the code one step
closer to allow PM operations such as Suspend-to-RAM
in the case when SMP is disabled in the kernel config.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
[horms+renesas@verge.net.au: updated for recent #include changes]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

diff --git a/arch/arm/mach-shmobile/pm-r8a7790.c b/arch/arm/mach-shmobile/pm-r8a7790.c
index 0f1090d..4289b38 100644 (file)
--- a/arch/arm/mach-shmobile/pm-r8a7790.c
+++ b/arch/arm/mach-shmobile/pm-r8a7790.c
@@ -11,10 +11,22 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/smp.h>
 #include <asm/io.h>
 #include <mach/r8a7790.h>
+#include "common.h"
 #include "pm-rcar.h"
 
+/* RST */
+#define RST            0xe6160000
+#define CA15BAR                0x0020
+#define CA7BAR         0x0030
+#define CA15RESCNT     0x0040
+#define CA7RESCNT      0x0044
+
+/* On-chip RAM */
+#define MERAM          0xe8080000
+
 /* SYSC */
 #define SYSCIER 0x0c
 #define SYSCIMR 0x10
@@ -38,8 +50,32 @@ static inline void r8a7790_sysc_init(void) {}
 
 void __init r8a7790_pm_init(void)
 {
+       void __iomem *p;
+       u32 bar;
        static int once;
 
-       if (!once++)
-               r8a7790_sysc_init();
+       if (once++)
+               return;
+
+       /* MERAM for jump stub, because BAR requires 256KB aligned address */
+       p = ioremap_nocache(MERAM, shmobile_boot_size);
+       memcpy_toio(p, shmobile_boot_vector, shmobile_boot_size);
+       iounmap(p);
+
+       /* setup reset vectors */
+       p = ioremap_nocache(RST, 0x63);
+       bar = (MERAM >> 8) & 0xfffffc00;
+       writel_relaxed(bar, p + CA15BAR);
+       writel_relaxed(bar, p + CA7BAR);
+       writel_relaxed(bar | 0x10, p + CA15BAR);
+       writel_relaxed(bar | 0x10, p + CA7BAR);
+
+       /* de-assert reset for all CPUs */
+       writel_relaxed((readl_relaxed(p + CA15RESCNT) & ~0x0f) | 0xa5a50000,
+                      p + CA15RESCNT);
+       writel_relaxed((readl_relaxed(p + CA7RESCNT) & ~0x0f) | 0x5a5a0000,
+                      p + CA7RESCNT);
+       iounmap(p);
+
+       r8a7790_sysc_init();
 }

diff --git a/arch/arm/mach-shmobile/smp-r8a7790.c b/arch/arm/mach-shmobile/smp-r8a7790.c
index 7590e2b..81ba906 100644 (file)
--- a/arch/arm/mach-shmobile/smp-r8a7790.c
+++ b/arch/arm/mach-shmobile/smp-r8a7790.c
@@ -22,13 +22,6 @@
 #include "common.h"
 #include "pm-rcar.h"
 
-#define RST            0xe6160000
-#define CA15BAR                0x0020
-#define CA7BAR         0x0030
-#define CA15RESCNT     0x0040
-#define CA7RESCNT      0x0044
-#define MERAM          0xe8080000
-
 static struct rcar_sysc_ch r8a7790_ca15_scu = {
        .chan_offs = 0x180, /* PWRSR5 .. PWRER5 */
        .isr_bit = 12, /* CA15-SCU */
@@ -41,32 +34,9 @@ static struct rcar_sysc_ch r8a7790_ca7_scu = {
 
 static void __init r8a7790_smp_prepare_cpus(unsigned int max_cpus)
 {
-       void __iomem *p;
-       u32 bar;
-
        /* let APMU code install data related to shmobile_boot_vector */
        shmobile_smp_apmu_prepare_cpus(max_cpus);
 
-       /* MERAM for jump stub, because BAR requires 256KB aligned address */
-       p = ioremap_nocache(MERAM, shmobile_boot_size);
-       memcpy_toio(p, shmobile_boot_vector, shmobile_boot_size);
-       iounmap(p);
-
-       /* setup reset vectors */
-       p = ioremap_nocache(RST, 0x63);
-       bar = (MERAM >> 8) & 0xfffffc00;
-       writel_relaxed(bar, p + CA15BAR);
-       writel_relaxed(bar, p + CA7BAR);
-       writel_relaxed(bar | 0x10, p + CA15BAR);
-       writel_relaxed(bar | 0x10, p + CA7BAR);
-
-       /* enable clocks to all CPUs */
-       writel_relaxed((readl_relaxed(p + CA15RESCNT) & ~0x0f) | 0xa5a50000,
-                      p + CA15RESCNT);
-       writel_relaxed((readl_relaxed(p + CA7RESCNT) & ~0x0f) | 0x5a5a0000,
-                      p + CA7RESCNT);
-       iounmap(p);
-
        /* turn on power to SCU */
        r8a7790_pm_init();
        shmobile_smp_apmu_suspend_init();