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authorMagnus Damm <damm+renesas@opensource.se>2014-06-06 16:21:11 +0900
committerSimon Horman <horms+renesas@verge.net.au>2014-06-26 16:01:27 +0900
commit8e26118d44c4877fa52dc8117692f3cc9af3c769 (patch)
tree8b7e42cf809f4c462caa61eb69516cc48e27de63 /arch/arm/mach-shmobile
parent06f2c5dcc24b026872bfc9b50b47c384638d2111 (diff)
downloadblackbird-op-linux-8e26118d44c4877fa52dc8117692f3cc9af3c769.tar.gz
blackbird-op-linux-8e26118d44c4877fa52dc8117692f3cc9af3c769.zip
ARM: shmobile: Move r8a7791 reset code to pm-r8a7791.c
Move r8a7791 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 header file changes] Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Diffstat (limited to 'arch/arm/mach-shmobile')
-rw-r--r--arch/arm/mach-shmobile/pm-r8a7791.c27
-rw-r--r--arch/arm/mach-shmobile/smp-r8a7791.c24
2 files changed, 25 insertions, 26 deletions
diff --git a/arch/arm/mach-shmobile/pm-r8a7791.c b/arch/arm/mach-shmobile/pm-r8a7791.c
index b7e6513fb38a..c44304c3c6df 100644
--- a/arch/arm/mach-shmobile/pm-r8a7791.c
+++ b/arch/arm/mach-shmobile/pm-r8a7791.c
@@ -11,12 +11,17 @@
*/
#include <linux/kernel.h>
-
+#include <linux/smp.h>
#include <asm/io.h>
-
+#include "common.h"
#include "pm-rcar.h"
#include "r8a7791.h"
+#define RST 0xe6160000
+#define CA15BAR 0x0020
+#define CA15RESCNT 0x0040
+#define RAM 0xe6300000
+
/* SYSC */
#define SYSCIER 0x0c
#define SYSCIMR 0x10
@@ -40,10 +45,28 @@ static inline void r8a7791_sysc_init(void) {}
void __init r8a7791_pm_init(void)
{
+ void __iomem *p;
+ u32 bar;
static int once;
if (once++)
return;
+ /* RAM for jump stub, because BAR requires 256KB aligned address */
+ p = ioremap_nocache(RAM, shmobile_boot_size);
+ memcpy_toio(p, shmobile_boot_vector, shmobile_boot_size);
+ iounmap(p);
+
+ /* setup reset vectors */
+ p = ioremap_nocache(RST, 0x63);
+ bar = (RAM >> 8) & 0xfffffc00;
+ writel_relaxed(bar, p + CA15BAR);
+ writel_relaxed(bar | 0x10, p + CA15BAR);
+
+ /* enable clocks to all CPUs */
+ writel_relaxed((readl_relaxed(p + CA15RESCNT) & ~0x0f) | 0xa5a50000,
+ p + CA15RESCNT);
+ iounmap(p);
+
r8a7791_sysc_init();
}
diff --git a/arch/arm/mach-shmobile/smp-r8a7791.c b/arch/arm/mach-shmobile/smp-r8a7791.c
index 248255524127..df086aa79630 100644
--- a/arch/arm/mach-shmobile/smp-r8a7791.c
+++ b/arch/arm/mach-shmobile/smp-r8a7791.c
@@ -24,35 +24,11 @@
#include "r8a7791.h"
#include "rcar-gen2.h"
-#define RST 0xe6160000
-#define CA15BAR 0x0020
-#define CA15RESCNT 0x0040
-#define RAM 0xe6300000
-
static void __init r8a7791_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);
- /* RAM for jump stub, because BAR requires 256KB aligned address */
- p = ioremap_nocache(RAM, shmobile_boot_size);
- memcpy_toio(p, shmobile_boot_vector, shmobile_boot_size);
- iounmap(p);
-
- /* setup reset vectors */
- p = ioremap_nocache(RST, 0x63);
- bar = (RAM >> 8) & 0xfffffc00;
- writel_relaxed(bar, p + CA15BAR);
- writel_relaxed(bar | 0x10, p + CA15BAR);
-
- /* enable clocks to all CPUs */
- writel_relaxed((readl_relaxed(p + CA15RESCNT) & ~0x0f) | 0xa5a50000,
- p + CA15RESCNT);
- iounmap(p);
-
r8a7791_pm_init();
shmobile_smp_apmu_suspend_init();
}
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