ARM: add basic support for Rockchip SoCs

This patch adds a basic support for the ARM-based Rockchip SoCs of the
RK3xxx family.

Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

4 files changed, 61 insertions, 0 deletions

diff --git a/arch/arm/mach-rockchip/Kconfig b/arch/arm/mach-rockchip/Kconfig
new file mode 100644
index 0000000000..dfaf146a69
--- /dev/null
+++ b/arch/arm/mach-rockchip/Kconfig
@@ -0,0 +1,7 @@
+if ARCH_ROCKCHIP
+
+config ARCH_TEXT_BASE
+	hex
+	default 0x68000000
+
+endif
diff --git a/arch/arm/mach-rockchip/Makefile b/arch/arm/mach-rockchip/Makefile
new file mode 100644
index 0000000000..820eb10ac2
--- /dev/null
+++ b/arch/arm/mach-rockchip/Makefile
@@ -0,0 +1 @@
+obj-y += core.o
diff --git a/arch/arm/mach-rockchip/core.c b/arch/arm/mach-rockchip/core.c
new file mode 100644
index 0000000000..bab06df63c
--- /dev/null
+++ b/arch/arm/mach-rockchip/core.c
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2014 Beniamino Galvani <b.galvani@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <asm/io.h>
+#include <common.h>
+#include <mach/rockchip-regs.h>
+
+void __noreturn reset_cpu(unsigned long addr)
+{
+	/* Map bootrom from address 0 */
+	writel(RK_SOC_CON0_REMAP << 16, RK_GRF_BASE + RK_GRF_SOC_CON0);
+	/* Reset */
+	writel(0xeca8, RK_CRU_BASE + RK_CRU_GLB_SRST_SND);
+
+	while (1)
+		;
+}
+EXPORT_SYMBOL(reset_cpu);
diff --git a/arch/arm/mach-rockchip/include/mach/rockchip-regs.h b/arch/arm/mach-rockchip/include/mach/rockchip-regs.h
new file mode 100644
index 0000000000..a6a1c640d6
--- /dev/null
+++ b/arch/arm/mach-rockchip/include/mach/rockchip-regs.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2014 Beniamino Galvani <b.galvani@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __MACH_ROCKCHIP_REGS_H
+#define __MACH_ROCKCHIP_REGS_H
+
+#define RK_CRU_BASE		0x20000000
+#define RK_GRF_BASE		0x20008000
+
+#define RK_CRU_GLB_SRST_SND	0x0104
+#define RK_GRF_SOC_CON0		0x00a0
+
+#define RK_SOC_CON0_REMAP	(1 << 12)
+
+#endif /* __MACH_ROCKCHIP_REGS_H */