1 files changed, 73 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/pm-r8a7791.c b/arch/arm/mach-shmobile/pm-r8a7791.c
new file mode 100644
index 0000000..25f107b
--- /dev/null
+++ b/arch/arm/mach-shmobile/pm-r8a7791.c
@@ -0,0 +1,73 @@
+/*
+ * r8a7791 Power management support
+ *
+ * Copyright (C) 2014  Renesas Electronics Corporation
+ * Copyright (C) 2011  Renesas Solutions Corp.
+ * Copyright (C) 2011  Magnus Damm
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#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
+
+#if defined(CONFIG_SMP)
+
+static void __init r8a7791_sysc_init(void)
+{
+	void __iomem *base = rcar_sysc_init(0xe6180000);
+
+	/* enable all interrupt sources, but do not use interrupt handler */
+	iowrite32(0x0131000e, base + SYSCIER);
+	iowrite32(0, base + SYSCIMR);
+}
+
+#else /* CONFIG_SMP */
+
+static inline void r8a7791_sysc_init(void) {}
+
+#endif /* CONFIG_SMP */
+
+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();
+	shmobile_smp_apmu_suspend_init();
+}